Patent Publication Number: US-2022232901-A1

Title: Cartridge and manufacturing method of cartridge

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application is a continuation application of International Application No. PCT/JP2020/042577, filed on Nov. 16, 2020. 
    
    
     TECHNICAL FIELD 
     The present invention relates to a cartridge, and a manufacturing method of the cartridge. 
     BACKGROUND ART 
     Conventionally, heated tobacco products are known that are used to inhale an atmosphere containing aerosol, the aerosol being obtained by causing a dried leaf tobacco coming from plants in the genus Nicotiana tobacum, a reconstituted tobacco containing plants in the same genus, strips and granules of the reconstituted tobacco, and/or a mixture thereof to pass through vapor of alcohol, without burning the same, and by causing ingredients derived from a leaf tobacco and the like to transfer to a gas phase. Furthermore, there are known electronic tobacco products that are used to inhale an atmosphere in which vapor and outside air are mixed, the vapor being generated by atomizing or vaporizing aromatic alcoholic or aqueous solutions by an appropriate electric component (hereinafter, in the present specification, such heated tobacco products and electronic tobacco products will be collectively referred to as “vapor product(s)”). Such a vapor product includes a component for containing an aerosol source, a component for generating aerosol, a component forming a channel for aerosol, or the like. As such a component, a component made of resin is generally used from the standpoints of ease in processing, weight and the like. 
     In the process of manufacturing the vapor product, a resin component is sometimes joined or welded with another component. As methods of joining resin components or a resin component and a metal component that form the vapor product, there are known a laser welding method and an ultrasonic welding method (see PTLs 1 to 4). 
     CITATION LIST 
     Patent Literature 
     PTL 1: International Publication No. WO 2020/081849 
     PTL 2: International Publication No. WO 2020/023540 
     PTL 3: U.S. Patent Application No. 2020/0214343 
     PTL 4: Japanese Patent Laid-Open No. 2018-019681 
     SUMMARY OF INVENTION 
     Technical Problem 
     However, when welding two components as mentioned above, melted resin is pushed out from a joined part as the components are pressed against each other, and solidified resin (a leftover material) remains around the joined part. In the case where such a leftover material is present in an aerosol channel of a vapor product, aerosol passing through the aerosol channel may condense on the leftover material and liquid droplets may possibly be collected. As a result, the collected liquid droplets may flow into the mouth of a user, or performance of the vapor product may deviate from design due to a cross-sectional area of the aerosol channel being narrowed. 
     Furthermore, such a leftover material may fall off at a later stage in the manufacturing of the vapor product to be accumulated on a transfer route or to get mixed in the product. Even when the leftover material does not fall off, appearance of the vapor product is impaired. Particularly, in the case where the leftover material is formed on a tank (a cartridge) that forms the vapor product and that is mainly for containing an aerosol source, the leftover material that is exposed is possibly erroneously recognized as a foreign substance in the aerosol source. Furthermore, a semi-finished product on which the leftover material is generated deviates from design dimensions, and may easily fall down at a later stage and block the transfer route. 
     An object of the present invention is to prevent exposure of a leftover material at a cartridge that forms a vapor product. 
     Solution to Problem 
     According to a first mode, there is provided a cartridge that is assembled in a part of a vapor product that includes a heating element for heating an aerosol source. The cartridge includes a first component and a second component, at least one of which being formed of resin, and a connection section whose one end is connected to the first component and whose another end is joined or welded to the second component. The first component includes a first facing surface that faces the second component, and a first outermost edge of the first facing surface. The second component includes a second facing surface that faces the first component, and a second outermost edge of the second facing surface. The first outermost edge and the second component are not joined or welded to each other, and the second outermost edge and the first component are not joined or welded to each other. 
     When the first outermost edge or the second outermost edge is joined or welded to a component, a melted material (a leftover material) from these parts is exposed to outside the components. According to the first mode, the first outermost edge of the first component and the second outermost edge of the second component are not joined or welded to any part, and thus, the first outermost edge and the second outermost edge are not melted, and exposure of leftover materials therefrom to outside the components may be prevented. Additionally, in the present specification, the “first facing surface” of the first component and the “second facing surface” of the second component are surfaces of the first component and the second component that directly face each other in a direction in which the connection section extends between the first component and the second component. Members other than the connection section are not present between the facing surface of the first component and the facing surface of the second component. The “facing surfaces” of the first component and the second component may also be said to be surfaces that are at an angle relative to the direction in which the connection section extends between the first component and the second component. 
     A second mode is summarized as the cartridge according to the first mode, the cartridge including an aerosol channel where aerosol that is generated by evaporation of the aerosol source passes through, where at least a part of the aerosol channel is demarcated by at least one of the first component and the second component. 
     According to the second mode, because the aerosol channel is demarcated by at least one of the first component and the second component, a leftover material may be prevented from being exposed in such an aerosol channel, and condensation of aerosol on a leftover material may be prevented. Furthermore, as described above, the cartridge according to the second mode is formed of resin. Demarcation as described above of the aerosol channel by at least a part of the first component and the second component may be achieved by integrally die-molding each of the components in such a way that there is included a portion that forms a part of the recessed section mentioned above and there is included a portion at which at least a part of the component forms the aerosol channel. This enables an assembly step or a bonding step necessary in the case of molding separate bodies to be omitted, and because there are no fitting sections or bonded parts, the component can be easily handled and is not easily broken when a consumer holds it in his/her hand at the time of use in spite of being a small resin component. However, designs are restricted with respect to shapes of the recessed section and the aerosol channel in such a way that the two components may each be allowed to be integrally die-molded. 
     A third mode is summarized as the cartridge according to the first or second mode, the cartridge including a space capable of containing the aerosol source, where at least a part of the space is demarcated by at least one of the first component and the second component. 
     According to the third mode, because at least one of the first component and the second component demarcates a space that is capable of containing the aerosol source, exposure of a leftover material in such a space may be prevented, and erroneous recognition of mixing of a foreign substance in the aerosol source may be prevented. Furthermore, as described above, the cartridge according to the third mode citing the first mode and the second mode is formed of resin. Provision of the space that is capable of containing the aerosol source and demarcation of at least a part of the space by at least one of the first component and the second component described above may be achieved by integrally die-molding each of the components in such a way that there is included a portion that forms a part of the recessed section mentioned above or there is included a portion at which at least a part of the component forms the aerosol channel, and in such a way that there is included a portion that forms the space that is capable of containing the aerosol source. The effects described in the second mode may thus also be obtained. 
     A fourth mode is summarized as the cartridge according to any one of the first to third modes, where at least a part of the heating element is housed in at least one of the first component and the second component. 
     According to the fourth mode, because at least one of the first component and the second component houses at least a part of the heating element, exposure of a leftover material to such a heating element may be prevented. Furthermore, the cartridge according to the fourth mode may be easily used at the time of use by a consumer because assembly with the heating element is not required. 
     A fifth mode is summarized as the cartridge according to any one of the first to fourth modes, where the first outermost edge and the second outermost edge are not joined or welded to each other. 
     When the first outermost edge of the first component and the second outermost edge of the second component are joined or welded to each other, a leftover material is exposed from the first outermost edge and the second outermost edge. By contrast, according to the fifth mode, because the first outermost edge and the second outermost edge are not joined or welded to each other, exposure of a leftover material from the first outermost edge and the second outermost edge may be prevented. 
     A sixth mode is summarized as the cartridge according to the fifth mode, the cartridge including a gap between the first outermost edge and the second outermost edge. 
     According to the sixth mode, because there is a gap where a leftover material generated between the first component and the second component may be retained, exposure, to outside, of the leftover material generated from the connection section that is joined or welded to the second component may be better prevented. 
     A seventh mode is summarized as the cartridge according to any one of the first to sixth modes, where the second component includes a first opening formed in the second facing surface, and a first opening edge that demarcates at least a part of the first opening, and the first opening edge is not joined or welded to the first component. 
     According to the seventh mode, because the first opening edge is not joined or welded to the first component, a leftover material is not generated from the first opening edge, and exposure of a leftover material in the first opening may be prevented. 
     An eighth mode is summarized as the cartridge according to the seventh mode, where the first opening has an annular shape when seen along a direction in which the connection section extends between the first component and the second component, the first opening edge includes an opening outer edge and an opening inner edge that demarcate the first opening, and the opening outer edge and the opening inner edge are not joined or welded to the first component. 
     According to the eighth mode, because the opening outer edge and the opening inner edge are not joined or welded to the first component, exposure of a leftover material from the opening outer edge and the opening inner edge in the first opening may be prevented. 
     A ninth mode is summarized as the cartridge according to the eighth mode, where the second component includes a second opening that is formed in the second facing surface and that is positioned more inward from the first opening when seen along the direction in which the connection section extends between the first component and the second component, and a second opening edge that demarcates at least a part of the second opening, and the second opening edge is not joined or welded to the first component. 
     According to the ninth mode, because the second opening edge is not joined or welded to the first component, a leftover material is not generated from the second opening edge, and exposure of a leftover material in the second opening may be prevented. 
     A tenth mode is summarized as the cartridge according to any one of the first to ninth modes, where the first facing surface of the first component and the second facing surface of the second component are not joined or welded to each other. 
     According to the tenth mode, because the first facing surface of the first component and the second facing surface of the second component are not joined or welded to each other, a leftover material may be prevented from being generated from the first facing surface and the second facing surface, and as a result, exposure of a leftover material to outside may be prevented. 
     According to an eleventh mode, there is provided a manufacturing method of the cartridge according to any one of the first to tenth modes. In the manufacturing method of the cartridge, the first component is a lid member, and the second component is a cylindrical member. The manufacturing method of the cartridge includes connecting a heating assembly including the heating element to one end of the cylindrical member and closing an opening on the one end of the cylindrical member, filling an inside of the cylindrical member, to which the heating assembly is connected, with the aerosol source, and joining or welding the connection section to another end of the cylindrical member filled with the aerosol source. 
     When the aerosol source is put in a cylindrical member with a bottom to which the heating assembly is not assembled, up to assembly of the heating assembly has to be completed to prevent leakage of the aerosol source from the cylindrical member. By contrast, according to the eleventh mode, the heating assembly can be assembled with the cylindrical member before filling with the aerosol source is performed, and thus, for example, the cylindrical member to which the heating assembly is connected may be manufactured in advance as one unit and then be transported, and filling with the aerosol source and joining or welding of the lid member may be performed at another place. 
     A twelfth mode is summarized as the manufacturing method of the cartridge according to the tenth mode, the manufacturing method including ultrasonically welding the connection section of the lid member to the other end of the cylindrical member. 
     According to a thirteenth mode, there is provided a manufacturing method of the cartridge according to any one of the first to tenth modes. The manufacturing method of the cartridge includes joining or welding the other end of the connection section to the second component in such a way that the first facing surface of the first component and the second facing surface of the second component are not joined or welded to each other. 
     According to the thirteenth mode, because the first facing surface of the first component and the second facing surface of the second component are not joined or welded to each other, a leftover material may be prevented from being generated from the first facing surface and the second facing surface, and as a result, exposure of a leftover material to outside may be prevented. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is an exploded perspective view of a vapor product according to a present embodiment. 
         FIG. 2  is an exploded perspective view of a cartridge. 
         FIG. 3A  is a perspective view of a tank main body. 
         FIG. 3B  is a cross-sectional view of the tank main body seen along arrows  3 B- 3 B shown in  FIG. 3A . 
         FIG. 4A  is a perspective view of a lid. 
         FIG. 4B  is a cross-sectional view including a center of the lid. 
         FIG. 5A  is a cross-sectional view cutting a tank along a longitudinal direction. 
         FIG. 5B  is an enlarged view of a connection section between the lid and the tank main body shown in  FIG. 5A . 
         FIG. 6A  is a schematic view showing a manufacturing process of the cartridge. 
         FIG. 6B  is a schematic view showing the manufacturing process of the cartridge. 
         FIG. 6C  is a schematic view showing the manufacturing process of the cartridge. 
         FIG. 6D  is a schematic view showing the manufacturing process of the cartridge. 
         FIG. 6E  is a schematic view showing the manufacturing process of the cartridge. 
         FIG. 6F  is a schematic view showing the manufacturing process of the cartridge. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings described below, same or corresponding structural elements are denoted by a same reference sign, and redundant description is omitted. 
       FIG. 1  is an exploded perspective view of a vapor product according to the present embodiment. A vapor product  100  is a device used to inhale an atmosphere containing aerosol, the aerosol being obtained by a method, among a plurality of methods for generating aerosol, of causing aerosol generated by heating an aerosol source extending outside from a container section of a cartridge by an electric heater or by atomizing the aerosol source by application of ultrasonic waves to pass through strips/granules of a reconstituted tobacco, and thereby causing ingredients derived from a leaf tobacco and the like to transfer to a gas phase. Additionally, the above example is not restrictive, and the vapor product  100  may be a device that is used to inhale aerosol containing aromatic components, with which an aerosol source mixing components such as nicotine/menthol, flavors and alcohol is heated or atomized. 
     As shown in  FIG. 1 , the vapor product  100  includes a main body unit  10 , and a cartridge  30  and a tobacco capsule  12  that are detachably attached to the main body unit  10 . The main body unit  10  includes a power supply unit  14 , a holding unit  16 , and a mouthpiece  18 . The power supply unit  14 , the holding unit  16 , and the mouthpiece  18  are each formed into a cylindrical shape. The mouthpiece  18  may be screwed to one end of the holding unit  16 , and the power supply unit  14  may be connected to the other end of the holding unit  16 , for example. In the present specification, a direction along which the mouthpiece  18 , the holding unit  16 , and the power supply unit  14  are coupled will be referred to as a longitudinal direction. 
     The power supply unit  14  includes a battery  14   a,  a switch  14   b,  pin electrodes  14   c,  and an engaging section  14   d.  The battery  14   a  is housed inside the power supply unit  14 . The switch  14   b  is capable of switching on or off the power of the vapor product  100  by being held down in a state where the vapor product  100  is assembled, for example. The pin electrodes  14   c  contact electrodes, described later, of the cartridge  30  and may electrically connect the battery  14   a  and the electrodes, when the vapor product  100  is assembled in a state where the cartridge  30  is housed inside the holding unit  16 . The engaging section  14   d  may cause the holding unit  16  and the power supply unit  14  to be engaged with each other, by engaging with an engagement receiving section, not shown, inside the holding unit  16 . The power supply unit  14  includes a controller  14   e  for controlling power to be supplied by the battery  14   a  to the electrodes of the cartridge  30 . Furthermore, the power supply unit  14  may include a puff sensor, not shown. In this case, the controller  14   e  may control the battery  14   a  such that power is supplied by the battery  14   a  to the cartridge  30  when a puff is detected. 
     The holding unit  16  includes a cylindrical body  16   a,  and houses the cartridge  30  inside the cylindrical body  16   a,  with the electrodes, described later, of the cartridge  30  facing the power supply unit  14 . By attaching the mouthpiece  18  to the holding unit  16  in a state where the cartridge  30  is housed in the holding unit  16 , the cartridge  30  may be fixed inside the holding unit  16 . The holding unit  16  includes, at the cylindrical body  16   a,  a window  16   c  for visually checking the aerosol source contained in the cartridge  30 , and an air hole  16   b  for supplying air to the cartridge  30 . 
     The mouthpiece  18  includes a screw section  18   a  to be screwed with the holding unit  16 , and a cylindrical section  18   b  that extends in the longitudinal direction from the screw section  18   a.  A user may inhale aerosol generated by the vapor product  100  by holding the cylindrical section  18   b  in his/her mouth. 
     The tobacco capsule  12  includes a capsule section  12   a  for containing strips/granules of a reconstituted tobacco inside, and a filter section  12   b.  The capsule section  12   a  has a cylindrical shape, and a mesh is formed on an end surface on one side, for example, and an opening is formed in an end surface on the other side. The size of the mesh that is formed on the end surface on one side of the capsule section  12   a  may be designed in such a way that strips/granules of the reconstituted tobacco contained in the capsule section  12   a  do not escape from the capsule section  12   a.  The filter section  12   b  is fitted with the opening of the capsule section  12   a  to close the opening. The tobacco capsule  12  may be detachably attached into the cylindrical section  18   b  of the mouthpiece  18  in the longitudinal direction, from an opposite side from the holding unit  16 . 
     The cartridge  30  stores a liquid aerosol source, and generates aerosol by atomizing the aerosol source when power is supplied from the power supply unit  14 . The aerosol source may include at least one of water, propylene glycol, and glycerin, for example. A specific structure of the cartridge  30  will be described later. The cartridge  30  that includes an atomization function of atomizing the aerosol source in the manner described above is sometimes referred to as a cartomizer. 
     A method of using the vapor product  100  will be described. First, the switch  14   b  is pressed in a state where the vapor product  100  is assembled, and the power is switched on. Next, a user holds the cylindrical section  18   b  in his/her mouth and inhales. At this time, when inhalation by the user is detected by the puff sensor, not shown, of the power supply unit  14 , power is supplied from the battery  14   a  of the power supply unit  14  to the electrodes of the cartridge  30 , and aerosol is generated at the cartridge  30 . The aerosol generated at the cartridge  30  passes through the strips/granules of the reconstituted tobacco inside the tobacco capsule  12  due to inhalation by the user, and is supplied into the mouth of the user together with ingredients derived from a leaf tobacco and the like. 
     Next, a detailed description will be given of the cartridge  30  shown in  FIG. 1 .  FIG. 2  is an exploded perspective view of the cartridge  30 . As shown in  FIG. 2 , the cartridge  30  includes a tank  50  that has a bottomed cylindrical shape, a gasket  31  that is substantially disc-shaped and that is to be housed inside the tank  50 , a mesh body  32  that is substantially disc-shaped, a heating section  33 , an atomization container  34 , and a heater holder  35 . 
     The tank  50  includes an opening  51  through which the gasket  31 , the mesh body  32 , the heating section  33 , the atomization container  34 , and the heater holder  35  are to be inserted inside, a circumferential wall  52  that demarcates the opening  51 , and a pair of engaging holes  53  formed in the circumferential wall  52 . The engaging holes  53  are for fixing the heater holder  35  to the tank  50 . 
     The gasket  31  is formed such that an outer diameter is substantially the same as an inner diameter of the tank  50 . The gasket  31  performs positioning of the mesh body  32 , and also, maintains the shape of the mesh body  32 . The gasket  31  includes, at a center in a radial direction, an insertion hole  31   a  through which a channel tube  61  (see  FIGS. 3A and 3B ), described later, of the tank  50  can be inserted, and includes, around the insertion hole  31   a,  openings  31   b  (four in the drawing) that allow the aerosol source in the tank  50  to pass through. The gasket  31  is housed inside the tank  50  in such a way that the channel tube  61 , described later, is inserted through the insertion hole  31   a.    
     The mesh body  32  is disposed in contact with the gasket  31  in a manner covering the openings  31   b  of the gasket  31 . The mesh body  32  is a porous medium made of fiber such as cotton, for example, and holds the aerosol source that passed through the openings  31   b  of the gasket  31 . An insertion hole  32   a  that allows insertion of the channel tube  61 , described later, is formed at a center of the mesh body  32  in the radial direction. The mesh body  32  is positioned when the channel tube  61 , described later, is inserted through the insertion hole  32   a  and the mesh body  32  contacts the gasket  31 . 
     The heating section  33  atomizes a liquid aerosol source. The heating section  33  includes a wick  33   a  that is substantially U-shaped, and a heating wire  33   b  (corresponding to an example of a heating element) wound around the wick  33   a.  The wick  33   a  is made of glass fiber or the like, and absorbs and holds the aerosol source held at the mesh body  32 . Aerosol is generated when the aerosol source that is held at the wick  33   a  is heated and atomized by the heating wire  33   b.  In  FIG. 2 , the mesh body  32  and the heating section  33  are shown as one body, but the heating section  33  is housed inside the atomization container  34  and is connected to the heater holder  35 , and forms a heating assembly  38  together with the atomization container  34  and the heater holder  35 . 
     The atomization container  34  includes a container section  34   a  for housing the heating section  33 , and a fitting section  34   b  to be fitted with the heater holder  35 . The atomization container  34  is formed by an elastic member, such as a resin material such as silicone resin, for example. As illustrated, the fitting section  34   b  includes a groove section  34   c  that is cross-shaped, and projecting sections  34   d  formed by the groove section  34   c.  End portions of the heating wire  33   b  of the heating section  33  housed in the container section  34   a  enter the groove section  34   c  from holes, not shown, and are wound around the projecting sections  34   d.    
     The heater holder  35  is formed into a substantially cup shape as a whole, and includes a side wall section  35   a,  a bottom wall section  35   b,  and a pair of electrodes  35   c.  The pair of electrodes  35   c  is exposed from a bottom surface of the bottom wall section  35   b,  as illustrated, and is also exposed on an inside of the side wall section  35   a.  The fitting section  34   b  of the atomization container  34  is fitted with the side wall section  35   a.  At this time, each of the end portions of the heating wire  33   b  wound around the projecting sections  34   d  of the fitting section  34   b  come into contact with one of the pair of electrodes  35   c.  The side wall section  35   a  includes a claw  35   d  that is to be engaged with the engaging hole  53  of the tank  50 . 
     The heating assembly  38  is assembled by fitting the fitting section  34   b  of the atomization container  34  with the heater holder  35  and by housing the heating section  33  in the container section  34   a  of the atomization container  34 . The heating assembly  38  is fixed to the tank  50 , with the wick  33   a  of the heating section  33  in contact with the mesh body  32 , by fitting the heating assembly  38  with the tank  50  and causing the claw  35   d  to be engaged with the engaging hole  53  of the tank  50 . The opening  51  of the tank  50  is thereby closed by the heating assembly  38 . 
     Next, the structure of the tank  50  shown in  FIG. 2  will be described in detail. In the present embodiment, the tank  50  is formed from at least two components, and a connection section for connecting the two components to each other. Specifically, the tank  50  according to the present embodiment includes a tank main body  60  (corresponding to an example of a cylindrical member), and a lid  80  (corresponding to an example of a lid member), and the tank  50  is formed by connecting the tank main body  60  and the lid  80  to each other by the connection section (the tank main body  60  and the lid  80  each correspond to an example of a first component or a second component). In the present embodiment, the tank main body  60  and the lid  80  are both formed of resin, but this is not restrictive, and one of the tank main body  60  and the lid  80  may be formed of resin and the other one may be formed of a different material such as metal. 
       FIG. 3A  is a perspective view of the tank main body  60 .  FIG. 3B  is a cross-sectional view of the tank main body  60  seen along arrows  3 B- 3 B shown in  FIG. 3A . As shown in  FIG. 3A , in the present specification, an end portion of the tank main body  60  on the mouthpiece  18  side will be referred to as a first end portion  60   a,  and an end portion on an opposite side will be referred to as a second end portion  60   b.  As shown in  FIGS. 3A and 3B , the tank main body  60  includes the circumferential wall  52  and the channel tube  61 . The circumferential wall  52  demarcates a part of a space  52   a  where the aerosol source can be contained. The channel tube  61  demarcates a part of an aerosol channel  61   a  where aerosol that is generated by evaporation of the aerosol source passes through. In the present specification, a direction in which the channel tube  61  and the circumferential wall  52  extend is referred to as a longitudinal direction. The channel tube  61  is disposed within the circumferential wall  52 , and demarcates a part of the space  52   a  together with the circumferential wall  52 . In other words, the space  52   a  is formed between an inner surface of the circumferential wall  52  and an outer surface of the channel tube  61 . As shown in  FIG. 3B , the channel tube  61  extends to the first end portion  60   a  of the tank main body  60 , and forms a part of an end surface of the first end portion  60   a.  In the illustrated example, the tank main body  60  is formed into a cylindrical or columnar shape as a whole, but may be formed into any shape such as a square cylindrical shape without being limited to the examples mentioned above. 
     A plurality of ribs  62  (in the illustrated example, three) are provided between the inner surface of the circumferential wall  52  and the outer surface of the channel tube  61 , in a manner extending between the circumferential wall  52  and the channel tube. That is, the ribs  62  support the channel tube  61 . In the illustrated example, the ribs  62  are provided on the first end portion  60   a  side of the tank main body  60 , and are disposed at equal intervals in a circumferential direction while being disposed radially when seen along the longitudinal direction. 
     On the inner surface of the circumferential wall  52 , protruding sections  63  are integrally formed with the ribs  62 . The protruding section  63  extends in the longitudinal direction, from the rib  62  toward the second end portion  60   b.  The protruding section  63  extends from an end portion, of the rib  62 , on the second end portion  60   b  side to before a tip end, of the channel tube  61 , on the second end portion  60   b  side. The protruding sections  63  increase mechanical strength of the tank main body  60 , and also perform positioning of the gasket  31 . 
     The tank main body  60  includes the opening  51  for inserting the gasket  31 , the mesh body  32  and the heating assembly  38  shown in  FIG. 2 . At least a part of the heating assembly  38  including the heating wire  33   b  is housed in a space  64  in the tank main body  60 , on a side more to the second end portion  60   b  than the channel tube  61 . A part of the heating assembly  38  may protrude outside the tank main body  60  without being housed in the space  64 . 
     The tank main body  60  includes, on the first end portion  60   a,  a facing surface  65  (corresponding to an example of a second facing surface) that faces the lid  80  described later. The facing surface  65  of the tank main body  60  here refers to a surface that directly faces the lid  80  in a direction along which a first connection section  90  and a second connection section  92 , described later, extend (the longitudinal direction). In the following, the direction along which the first connection section  90  and the second connection section  92  extend will sometimes be referred to as the longitudinal direction. The facing surface  65  can also be said to be a surface that directly faces the lid  80  and that is at an angle relative to the longitudinal direction. Accordingly, an outer surface of the circumferential wall  52  of the tank main body  60  extends substantially in parallel to the longitudinal direction and is thus not a facing surface with respect to the lid  80 , and an end surface of the second end portion  60   b  of the tank main body  60  does not directly face the lid  80  and is thus not a facing surface. As shown in  FIG. 3B , the facing surface  65  includes an outermost edge  65   a  (corresponding to an example of a second outermost edge). In the illustrated example, the outermost edge  65   a  has a circular shape when seen along the longitudinal direction, but the outermost edge  65   a  may be formed into any shape without being limited thereto. 
     As shown in  FIGS. 3A and 3B , a first opening  66  may be formed in the facing surface  65 . In the illustrated example, the first opening  66  is formed into an annular shape when seen along the longitudinal direction, and is demarcated by an opening inner edge  66   a  (corresponding to an example of a first opening edge) and an opening outer edge  66   b  (corresponding to an example of the first opening edge) formed on the facing surface  65 . Accordingly, the opening inner edge  66   a  and the opening outer edge  66   b  each have a circular shape when seen along the longitudinal direction. In this case, the opening inner edge  66   a  and the opening outer edge  66   b  are desirably positioned concentrically. In the present embodiment, the first opening  66  communicates with the space  52   a  where the aerosol source can be contained. 
     Furthermore, a second opening  67  may be further formed in the facing surface  65 . In the illustrated example, the second opening  67  is formed into a circular shape when seen along the longitudinal direction, and is demarcated by a second opening edge  67   a  formed on the facing surface  65 . Accordingly, the second opening edge  67   a  has a circular shape when seen along the longitudinal direction. In the present embodiment, the second opening  67  communicates with the aerosol channel  61   a.  Additionally, in the present embodiment, the shape of the second opening  67  is circular, but this is not restrictive, and the shape may be an annular shape like that of the first opening  66 , and in this case, the second opening edge  67   a  demarcates a part of the second opening  67  as an opening edge on an outer side. As shown in  FIGS. 3A and 3B , the facing surface  65  may include a first recessed section  68  (corresponding to an example of a recessed section) provided between the outermost edge  65   a  and the opening outer edge  66   b,  and a second recessed section  69  (corresponding to an example of the recessed section) provided between the opening inner edge  66   a  and the second opening edge  67   a.  At least one of the first recessed section  68  and the second recessed section  69  may be provided on the facing surface  65 . Alternatively, it is also possible to omit the first recessed section  68  and the second recessed section  69 . As shown in  FIG. 3A , in the present embodiment, the first recessed section  68  and the second recessed section  69  are annular grooves that extend along the circumferential direction of the tank main body  60 . However, such a case is not restrictive, and planar shapes of the first recessed section  68  and the second recessed section  69  may take any shape. As shown in  FIG. 3B , the first recessed section  68  includes a bottom section  68   a  and a side wall section  68   b.  In the illustrated example, the side wall section  68   b  has a tapered surface  68   b  that causes the width of the first recessed section  68  to be reduced toward the bottom section  68   a.  Furthermore, the second recessed section  69  includes a bottom section  69   a  and a side wall section  69   b.  In the illustrated example, the side wall section  69   b  includes a tapered surface  69   b  that causes the width of the second recessed section  69  to be reduced toward the bottom section  69   a.    
       FIG. 4A  is a perspective view of the lid  80 .  FIG. 4B  is a cross-sectional view including a center of the lid  80 . As shown in  FIGS. 4A and 4B , the lid  80  includes a flat plate section  80   a  that is substantially disc-shaped. An opening  80   b  that communicates with the second opening  67  of the tank main body  60  may be provided at substantially center of the flat plate section  80   a.  The lid  80  is provided with a first connection section  90  (corresponding to an example of a connection section) and a second connection section  92  (corresponding to an example of the connection section), the first connection section  90  and the second connection section  92  each having one end thereof connected to one surface of the flat plate section  80   a.  The first connection section  90  or the second connection section  92  may be integrally formed with the lid  80  or may be connected to the lid  80  by being joined or welded. Furthermore, it is also possible to provide the lid  80  with only one of the first connection section  90  and the second connection section  92 . Other ends of the first connection section  90  and the second connection section  92  are joined or welded to the tank main body  60 . When seen along a direction in which the second connection section  92  extends between the lid  80  and the tank main body  60 , the second connection section  92  is positioned more inward from the first connection section  90 . Furthermore, as shown in  FIG. 4A , the first connection section  90  and the second connection section  92  may be ridge sections having an annular shape when seen along the direction in which the first connection section  90  and the second connection section  92  extend between the lid  80  and the tank main body  60  (the longitudinal direction). In  FIG. 4B , a cross-sectional shape of each of the ridge sections is rectangular, but the shape is not limited thereto and may be polygonal, such as triangular, or may be circular with the ridge section having a round tip end. Furthermore, the cross-sectional shape of the ridge section and a cross-sectional shape of the first recessed section  68  or the second recessed section  69  are desirably not similar to each other. Furthermore, the first connection section  90  and the second connection section  92  are desirably disposed substantially concentrically on a cross-section perpendicular to the longitudinal direction. The aerosol channel  61   a  that can be housed at a center of the tank  50  and that is separate from the space  52   a  may thus be formed. 
     The other end of the first connection section  90  is joined or welded to the first recessed section  68  of the tank main body  60 . A melted material (a leftover material) that is generated when the first connection section  90  is joined or welded may thus be accumulated in the first recessed section  68 . Accordingly, the leftover material from the first connection section  90  may be prevented from being exposed between the lid  80  and the tank main body  60 . Furthermore, the other end of the first connection section  90  may be joined or welded to the facing surface  65  of the tank main body  60 , at a position away from the outermost edge  65   a  of the facing surface  65 . This may prevent the leftover material from the first connection section  90  from being exposed from the outermost edge  65   a  of the facing surface  65  of the tank main body  60 . Moreover, the other end of the first connection section  90  may be joined or welded to the facing surface  65  of the tank main body  60 , at a position away from the opening outer edge  66   b.  This may prevent the leftover material from the first connection section  90  from being exposed in the first opening  66 . The other end of the first connection section  90  is desirably joined or welded to the bottom section  68   a  of the first recessed section  68 . This allows the leftover material from the first connection section  90  to be accumulated in the bottom section  68   a,  and the leftover material may be efficiently contained in the first recessed section  68 . 
     The other end of the second connection section  92  is joined or welded to the second recessed section  69  of the tank main body  60 . A melted material (a leftover material) that is generated when the second connection section  92  is joined or welded may thus be accumulated in the second recessed section  69 . Accordingly, the leftover material from the second connection section  92  may be prevented from being exposed between the lid  80  and the tank main body  60 . The other end of the second connection section  92  may be joined or welded to the facing surface  65  of the tank main body  60 , at a position away from the opening inner edge  66   a.  This may prevent the leftover material from the second connection section  92  from being exposed in the first opening  66 . Furthermore, the other end of the second connection section  92  may be joined or welded to the facing surface  65 , at a position away from the second opening edge  67   a.  This may prevent the leftover material from the second connection section  92  from being exposed in the second opening  67 . The other end of the second connection section  92  is desirably joined or welded to the bottom section  69   a  of the second recessed section  69 . This allows the leftover material from the second connection section  92  to be accumulated in the bottom section  69   a,  and the leftover material may be efficiently contained in the second recessed section  69 . The first connection section  90  and the second connection section  92  are desirably capable of being welded to the tank main body  60  by ultrasonic welding. 
     The lid  80  includes a facing surface  80   d  (corresponding to an example of a first facing surface) that faces the tank main body  60 . The facing surface  80   d  of the lid  80  here refers to a surface that directly faces the tank main body  60  in the longitudinal direction. The facing surface  80   d  can also be said to be a surface that directly faces the tank main body  60  and that is at an angle relative to the longitudinal direction. As shown in  FIG. 4B , the facing surface  80   d  includes an outermost edge  80   c  (corresponding to an example of a first outermost edge). In the illustrated example, the outermost edge  80   c  has a circular shape when seen along the longitudinal direction, but the outermost edge  80   c  may be formed into any shape without being limited thereto. Furthermore, the facing surface  80   d  includes an opening edge  80   e  that demarcates the opening  80   b.  The opening edge  80   e  can also be said to be an innermost edge of the lid  80 . 
     The lid  80  is connected to the tank main body  60  by the first connection section  90  and the second connection section  92 , and the first opening  66  of the tank main body  60  is thereby closed. At this time, the lid  80  demarcates a part of the aerosol channel  61   a,  and the opening  80   b  of the lid  80  forms a part of the aerosol channel  61   a.  Furthermore, the lid  80  demarcates a part of the space  52   a  where the aerosol source can be contained, by the first opening  66  of the tank main body  60  being closed by the lid  80 . 
     The lid  80  is further provided with a guide section  95  that extends from the facing surface  80   d  of the lid  80 . As shown in  FIG. 4A , the guide section  95  may be formed into an annular shape when seen along the longitudinal direction. The guide section  95  may have any shape, and a plurality of pin-shaped guide sections  95  may be provided, for example. In the present embodiment, the guide section  95  is to fit into the first opening  66  of the tank main body  60 . More specifically, the guide section  95  is to fit with the opening outer edge  66   b  that demarcates the first opening  66 . The lid  80  may thus be positioned relative to the tank main body  60  at the time of joining or welding the first connection section  90  and the second connection section  92  to the tank main body  60 . At this time, because the guide section  95  is fitted with the opening outer edge  66   b  of the first opening  66 , exposure of the leftover material generated from the first connection section  90  toward the first opening  66  may be prevented by the guide section  95 . In other words, the guide section  95  may prevent the leftover material from the first connection section  90  from entering the first opening  66 . 
     The guide section  95  may be provided on the lid  80  in such a way as to be fitted with the opening inner edge  66   a  that demarcates the first opening  66 . Furthermore, two guide sections  95  may be provided on the lid  80  to be fitted with both the opening inner edge  66   a  and the opening outer edge  66   b.  As shown in  FIG. 4B , the guide section  95  is desirably longer than the first connection section  90  or the second connection section  92  in the longitudinal direction. 
       FIG. 5A  is a cross-sectional view cutting the tank  50  along the longitudinal direction.  FIG. 5B  is an enlarged view of the connection section between the lid  80  and the tank main body  60  shown in  FIG. 5A . As shown in  FIGS. 5A and 5B , the lid  80  includes an extending section  82  that extends, in a direction perpendicular to the longitudinal direction, from a connection part between the first connection section  90  and the lid  80  toward the outermost edge  65   a  of the tank main body. The leftover material from the first connection section  90  may thus be prevented from being exposed to outside from a gap between the lid  80  and the tank main body  60 . 
     As shown in  FIGS. 5A and 5B , the guide section  95  is not joined or welded to the tank main body  60 . Accordingly, generation, from the guide section  95 , of a leftover material that is generated by melting of the guide section  95  may be prevented. Furthermore, as illustrated, when seen along the direction perpendicular to the direction (the longitudinal direction) of extension of the first connection section  90  and the second connection section  92  between the lid  80  and the tank main body  60 , the guide section  95  is disposed to overlap a connection portion between the first connection section  90  and the first recessed section  68 . Accordingly, a leftover material that is generated when the first connection section  90  is joined or welded to the tank main body  60  (the first recessed section  68 ) is covered by the guide section  95 , and may be prevented from being exposed in the first opening  66 . 
     Furthermore, in the present embodiment, in a state where the lid  80  is joined to the tank main body  60 , a gap is present between the outermost edge  80   c  of the lid  80  and the tank main body  60 , and these are not joined or welded. Furthermore, a gap is also present between the outermost edge  65   a  of the facing surface  65  of the tank main body  60  and the lid  80 , and these are not joined or welded. When the outermost edge  80   c  of the lid  80  or the outermost edge  65   a  of the tank main body  60  is joined or welded to a component, a material (a leftover material) generated by melting of such a part is possibly exposed to outside the tank  50 . By contrast, according to the present embodiment, the outermost edge  80   c  of the lid  80  or the outermost edge  65   a  of the tank main body  60  is not joined or welded to any part, and thus, the outermost edge  80   c  and the outermost edge  65   a  are not melted, and exposure of leftover materials therefrom to outside the tank  50  may be prevented. More specifically, in the present embodiment, the outermost edge  80   c  of the lid  80  and the outermost edge  65   a  of the tank main body  60  are desirably not joined or welded to each other. When the outermost edge  80   c  of the lid  80  and the outermost edge  65   a  of the tank main body  60  are joined or welded to each other, a leftover material is possibly exposed from the outermost edge  80   c  and the outermost edge  65   a.  By contrast, in the case where the outermost edge  80   c  of the lid  80  and the outermost edge  65   a  of the tank main body  60  are not joined or welded to each other, exposure of a leftover material from the outermost edge  80   c  and the outermost edge  65   a  may be prevented. 
     As shown in  FIGS. 5A and 5B , the tank  50  may include a gap between the outermost edge  80   c  of the lid  80  and the outermost edge  65   a  of the tank main body  60 . This allows a leftover material generated between the lid  80  and the tank main body  60  to be accumulated in the gap, and thus, leftover materials generated from the first connection section  90  and the second connection section  92  may be accumulated in the gap, and exposure of the leftover materials to outside the tank  50  may be better prevented. 
     As shown in  FIGS. 5A and 5B , with the tank  50 , the opening inner edge  66   a  or the opening outer edge  66   b  of the first opening  66  is desirably not joined or welded to the lid  80 . Generation of a leftover material from the opening inner edge  66   a  or the opening outer edge  66   b  is thereby prevented, and exposure of a leftover material in the first opening  66  (the space  52   a ) may be prevented, and erroneous recognition of mixing of a foreign substance in the aerosol source may be prevented. 
     As shown in  FIGS. 5A and 5B , with the tank  50 , the second opening edge  67   a  of the second opening  67  is desirably not joined or welded to the lid  80 . Generation of a leftover material from the second opening edge  67   a  is thereby prevented, and exposure of a leftover material in the second opening  67  (the aerosol channel  61   a ) may be prevented, and aerosol may be prevented from condensing on the leftover material. Furthermore, with the tank  50 , the opening edge  80   e  that demarcates the opening  80   b  of the lid  80  is desirably not joined or welded to the tank main body  60 . Generation of a leftover material from the opening edge  80   e  is thereby prevented, and exposure of a leftover material in the opening  80   b  may be prevented. 
     As shown in  FIGS. 5A and 5B , the facing surface  80   d  of the lid  80  and the facing surface  65  of the tank main body  60  are desirably not joined or welded to each other. In other words, the lid  80  and the tank main body  60  are desirably fixed to each other only by the first connection section  90  and the second connection section  92 . Generation of a leftover material from the facing surface  80   d  and the facing surface  65  is thereby prevented, and as a result, exposure of a leftover material to outside may be prevented. 
     As shown in  FIGS. 5A and 5B , a part of the first recessed section  68  of the tank main body  60  is desirably filled by a part of the first connection section  90  of the lid  80  (including a leftover material). In other words, the first recessed section  68  is desirably not completely filled by the first connection section  90 . The first recessed section  68  is thereby able to contain all the leftover material that is generated by melting of the first connection section  90 , and the leftover material may be prevented from sticking out from the first recessed section  68 . Furthermore, a part of the second recessed section  69  of the tank main body  60  is desirably filled by a part of the second connection section  92  of the lid  80  (including a leftover material). In other words, the second recessed section  69  is desirably not completely filled by the second connection section  92 . The second recessed section  69  is thereby able to contain all the leftover material that is generated by melting of the second connection section  92 , and the leftover material may be prevented from sticking out from the second recessed section  69 . 
     Next, a manufacturing method of the cartridge  30  of the vapor product  100  will be described.  FIGS. 6A to 6F  are schematic views showing a manufacturing process of the cartridge  30 . As shown in  FIG. 6A , first, the tank main body  60  for forming the cartridge  30  is prepared. At this time, the tank main body  60  may be installed with the second end portion  60   b  positioned at the top. Additionally, in  FIG. 6A , only the circumferential wall  52  of the tank main body  60  is shown, and illustration of other structural elements is omitted. 
     As shown in  FIG. 6B , the gasket  31  is disposed inside the tank main body  60  from the opening  51  of the tank main body  60 . At this time, the channel tube  61  of the tank main body  60  is inserted through the insertion hole  31   a  (see  FIG. 2 ) of the gasket  31 , and positioning of the gasket  31  is performed by the protruding sections  63  (see  FIG. 3B ) of the tank main body  60 . Furthermore, as shown in  FIG. 6C , the mesh body  32  is disposed inside the tank main body  60  from the opening  51  of the tank main body  60  to overlap the gasket  31 . At this time, the channel tube  61  of the tank main body  60  is inserted through the insertion hole  32   a  (see  FIG. 2 ) of the mesh body  32 . Then, as shown in  FIG. 6D , the heating assembly  38  is connected to the second end portion  60   b  of the tank main body  60 , and the opening  51  is closed. A part of the heating assembly  38  may be inserted into the tank main body  60  through the opening  51 . 
     Subsequently, as shown in  FIG. 6E , the space  52   a  of the tank main body  60  to which the heating assembly  38  is connected is filled with aerosol source L 1 . At this time, the tank main body  60  may be installed with the first end portion  60   a  positioned at the top. Lastly, as shown in  FIG. 6F , the lid  80  is joined or welded to the first end portion  60   a  of the tank main body  60  by ultrasonic welding, for example, and the cartridge  30  is thus manufactured. When the aerosol source L 1  is put in the bottomed tank main body  60  to which the heating assembly  38  is not assembled, up to assembly of the heating assembly  38  has to be completed to prevent leakage of the aerosol source L 1  from the tank main body  60 . By contrast, according to the processes shown in  FIGS. 6A to 6E , the heating assembly  38  can be assembled with the tank main body  60  before filling with the aerosol source L 1  is performed, and thus, for example, the tank main body  60  to which the heating assembly  38  is connected as shown in  FIG. 6D  may be manufactured as one unit and then be transported, and filling with the aerosol source and joining or welding of the lid  80  may be performed as shown in  FIGS. 6E and 6F  at another place. 
     In the process shown in  FIG. 6F , a part of the first recessed section  68  of the tank main body  60  is desirably filled by a part of the first connection section  90  of the lid  80  (including a leftover material). In other words, the first recessed section  68  is desirably not completely filled by the first connection section  90 . The first recessed section  68  is thereby able to contain all the leftover material that is generated by melting of the first connection section  90 , and the leftover material may be prevented from sticking out from the first recessed section  68 . Furthermore, a part of the second recessed section  69  of the tank main body  60  is desirably filled by a part of the second connection section  92  of the lid  80  (including a leftover material). In other words, the second recessed section  69  is desirably not completely filled by the second connection section  92 . The second recessed section  69  is thereby able to contain all the leftover material that is generated by melting of the second connection section  92 , and the leftover material may be prevented from sticking out from the second recessed section  69 . 
     In the process shown in  FIG. 6F , the first connection section  90  and the second connection section  92  are desirably joined or welded to the tank main body  60  in such a way that the facing surface  80   d  of the lid  80  and the facing surface  65  of the tank main body  60  are not joined or welded to each other. This prevents generation of a leftover material from the facing surface  80   d  and the facing surface  65 , and as a result, exposure of a leftover material to outside may be prevented. 
     In the process shown in  FIG. 6F , the first connection section  90  and the second connection section  92  are desirably joined or welded to the tank main body  60  in a state where the lid  80  and the tank main body  60  are positioned relative to each other by fitting the guide section  95  with the first opening  66  (the opening outer edge  66   b ). Furthermore, as shown in  FIG. 4B , the guide section  95  extends in parallel to the first connection section  90  and the second connection section  92 , and is, in the direction in which the first connection section  90  and the second connection section  92  extend (the longitudinal direction), longer than the first connection section  90  and the second connection  92  before the two are joined or welded to the tank main body  60 . Accordingly, the guide section  95  may be fitted in the first opening  66  and the lid  80  and the tank main body  60  may be positioned relative to each other before the first connection section  90  and the second connection section  92  are joined or welded to the tank main body  60 . 
     Heretofore, an embodiment of the present invention has been described, but the present invention is not limited to the embodiment described above, and various modifications may be made within the scope of the claims and within the technical ideas described in the specification and the drawings. Additionally, any shape and material not described explicitly in the specification and the drawings are included in the scope of the technical ideas of the present invention as long as they exhibit the same functions and effects as those of the present invention. 
     In the following, some of modes disclosed by the present specification will be described. 
     According to a first mode, there is provided a cartridge that is assembled in a part of a vapor product that includes a heating element for heating an aerosol source. The cartridge includes a first component and a second component, at least one of which being formed of resin, and a connection section whose one end is connected to the first component and whose another end is joined or welded to the second component. The second component includes a recessed section. The other end of the connection section is joined or welded to the recessed section. 
     According to the first mode, because the second component includes the recessed section to which the other end of the connection section is joined or welded, a melted material from the connection section may be accumulated in the recessed section. Accordingly, the melted material (a leftover material) from the connection section may be prevented from being exposed between the first component and the second component. 
     A second mode is summarized as the cartridge according to the first mode, the cartridge including an aerosol channel where aerosol that is generated by evaporation of the aerosol source passes through, where at least a part of the aerosol channel is demarcated by at least one of the first component and the second component. 
     According to the second mode, because the aerosol channel is demarcated by at least one of the first component and the second component, a leftover material may be prevented from being exposed in such an aerosol channel, and condensation of aerosol on a leftover material may be prevented. Furthermore, as described above, the cartridge according to the second mode is formed of resin. Demarcation as described above of the aerosol channel by at least a part of the first component and the second component may be achieved by integrally die-molding each of the components in such a way that there is included a portion that forms a part of the recessed section mentioned above and there is included a portion at which at least a part of the component forms the aerosol channel. This enables an assembly step or a bonding step necessary in the case of molding separate bodies to be omitted, and because there are no fitting sections or bonded parts, the component can be easily handled and is not easily broken when a consumer holds it in his/her hand at the time of use in spite of being a small resin component. However, designs are restricted with respect to shapes of the recessed section and the aerosol channel in such a way that the two components may each be allowed to be integrally die-molded. 
     A third mode is summarized as the cartridge according to the first mode or the second mode, the cartridge including a space capable of containing the aerosol source, where at least a part of the space is demarcated by at least one of the first component and the second component. 
     According to the third mode, because at least one of the first component and the second component demarcates a space that is capable of containing the aerosol source, exposure of a leftover material in such a space may be prevented, and erroneous recognition of mixing of a foreign substance in the aerosol source may be prevented. Furthermore, as described above, the cartridge according to the third mode citing the first mode and the second mode is formed of resin. Provision of the space that is capable of containing the aerosol source and demarcation of at least a part of the space by at least one of the first component and the second component described above may be achieved by integrally die-molding each of the components in such a way that there is included a portion that forms a part of the recessed section mentioned above or there is included a portion at which at least a part of the component forms the aerosol channel, and in such a way that there is included a portion that forms the space that is capable of containing the aerosol source. The effects described in the second mode may thus also be obtained. 
     A fourth mode is summarized as the cartridge according to any one of the first to third modes, where at least a part of the heating element is housed in at least one of the first component and the second component. 
     According to the fourth mode, because at least one of the first component and the second component houses at least a part of the heating element, exposure of a leftover material to such a heating element may be prevented. Furthermore, the cartridge according to the fourth mode may be easily used at the time of use by a consumer because assembly with the heating element is not required. 
     A fifth mode is summarized as the cartridge according to any one of the first to fourth modes, where the first component includes a flat plate section, the connection section is a ridge section that has an annular shape and that is provided on a flat surface of the flat plate section, and the recessed section is a groove extending along the ridge section. 
     According to the fifth mode, the annular ridge section is joined or welded to the annular groove. Accordingly, exposure of a leftover material at an annular joined or welded part may be prevented. Furthermore, when the annular ridge section is joined or welded to the annular groove, a closed space may be formed by the first component, the second component, and the connection section, and such a space may be made a space for containing the aerosol source, for example. 
     A sixth mode is summarized as the cartridge according to any one of the first to fifth modes, where the first component includes a facing surface that faces the second component, the connection section includes a first connection section and a second connection section, each of the first connection section and the second connection section has one end connected to the first component and another end joined or welded to the second component, and has an annular shape when seen along a direction in which the first connection section and the second connection section extend between the first component and the second component, the second connection section is positioned more inward from the first connection section when seen along the direction in which the second connection section extends between the first component and the second component, and the recessed section includes a first recessed section to which the other end of the first connection section is joined or welded, and a second recessed section to which the other end of the second connection section is joined or welded. 
     According to the sixth mode, the annular first connection section and the annular second connection section are joined or welded to the first recessed section and the second recessed section, respectively. Accordingly, exposure of a leftover material at an annular joined or welded part may be prevented. Furthermore, when the annular first connection section and the annular second connection section are joined or welded to the first recessed section and the second recessed section, an annular closed space and a separate space inside such a space may be formed by the first component, the second component, the first connection section, and the second connection section. Accordingly, the closed space may be made a space for containing the aerosol source, for example, and the separate space may be made the aerosol channel. Additionally, in the present specification, the “facing surfaces” of the first component and the second component refer to surfaces that directly face each other in a direction in which the connection section extends between the first component and the second component, and members other than the connection section are not present between the facing surface of the first component and the facing surface of the second component. The “facing surfaces” of the first component and the second component may also be said to be surfaces that are at an angle relative to the direction in which the connection section extends between the first component and the second component. 
     A seventh mode is summarized as the cartridge according to the sixth mode, where the first connection section and the second connection section are disposed substantially concentrically on a cross-section perpendicular to the first direction. 
     According to the seventh mode, a separate space may be formed at a center of the annular closed space in the first component and the second component. Accordingly, the space at the center may be made the aerosol channel. 
     An eighth mode is summarized as the cartridge according to any one of the first to seventh modes, where the recessed section includes a bottom section, and the other end of the connection section is joined or welded to the bottom section of the recessed section. 
     According to the eighth mode, because the other end of the connection section is joined or welded to the bottom section of the recessed section, a melted material (a leftover material) from the connection section may be accumulated in the bottom section, and the leftover material may be efficiently contained in the recessed section. 
     A ninth mode is summarized as the cartridge according to the eighth mode, where the recessed section includes a side wall section, and the side wall section includes a tapered surface that causes a width of the recessed section to be reduced toward the bottom section. 
     According to the ninth mode, the other end of the joining section is guided along the tapered surface at a time of j oining or welding of the other end of the connection section to the recessed section, and thus, the other end of the connection section may be easily joined or welded to the bottom section of the recessed section. 
     A tenth mode is summarized as the cartridge according to any one of the first to ninth modes, where a part of the recessed section of the second component is filled by a part of the connection section. 
     According to the tenth mode, a part of the recessed section is filled by the connection section, or in other words, the recessed section is not completely filled by the connection section, and thus, the recessed section may contain all the melted material (a leftover material) from the connection section, and the leftover material may be prevented from sticking out from the recessed section. 
     According to an eleventh mode, there is provided a manufacturing method of the cartridge according to any one of the first to tenth modes. In the manufacturing method of the cartridge, the first component is a lid member, and the second component is a cylindrical member. The manufacturing method of the cartridge includes connecting a heating assembly including the heating element to one end of the cylindrical member and closing an opening on the one end of the cylindrical member, filling an inside of the cylindrical member, to which the heating assembly is connected, with the aerosol source, and joining or welding the connection section to another end of the cylindrical member filled with the aerosol source. 
     When the aerosol source is put in a cylindrical member with a bottom to which the heating assembly is not assembled, up to assembly of the heating assembly has to be completed to prevent leakage of the aerosol source from the cylindrical member. By contrast, according to the eleventh mode, the heating assembly can be assembled with the cylindrical member before filling with the aerosol source is performed, and thus, for example, the cylindrical member to which the heating assembly is connected may be manufactured in advance as one unit and then be transported, and filling with the aerosol source and joining or welding of the lid member may be performed at another place. 
     A twelfth mode is summarized as the cartridge according to the eleventh mode, the cartridge including ultrasonically welding the connection section of the lid member to the other end of the cylindrical member. 
     According to a thirteenth mode, there is provided a manufacturing method of the cartridge according to any one of the first to tenth modes. The manufacturing method of the cartridge includes joining or welding the connection section of the first component to the second component, and filling a part of the recessed section of the second component by a part of the connection section. 
     According to the thirteenth mode, a part of the recessed section is filled by the connection section, or in other words, the recessed section is not completely filled by the connection section, and thus, the recessed section may contain all the melted material (a leftover material) from the connection section, and the leftover material may be prevented from sticking out from the recessed section. 
     According to a fourteenth mode, there is provided a cartridge including a heating element for heating an aerosol source. The cartridge includes a first component and a second component, at least one of which being formed of resin, and a connection section whose one end is connected to the first component and whose another end is joined or welded to the second component. The second component includes a facing surface that faces the first component, and an outermost edge of the facing surface. The other end of the connection section is joined or welded to the facing surface of the second component, at a position away from the outermost edge. 
     According to the fourteenth mode, because the connection section is at a position away from the outermost edge of the facing surface of the second component, a melted material (a leftover material) from the connection section may be prevented from being exposed from the outermost edge of the facing surface of the second component. Additionally, in the present specification, the “facing surfaces” of the first component and the second component refer to surfaces that directly face each other in the direction in which the connection section extends between the first component and the second component, and members other than the connection section are not present between the facing surface of the first component and the facing surface of the second component. The “facing surfaces” of the first component and the second component may also be said to be surfaces that are at an angle relative to the direction in which the connection section extends between the first component and the second component. 
     A fifteenth mode is summarized as the cartridge according to the fourteenth mode, the cartridge including an aerosol channel where aerosol that is generated by evaporation of the aerosol source passes through, where at least a part of the aerosol channel is demarcated by at least one of the first component and the second component. 
     According to the fifteenth mode, because the aerosol channel is demarcated by at least one of the first component and the second component, a leftover material may be prevented from being exposed in such an aerosol channel, and condensation of aerosol on a leftover material may be prevented. Furthermore, as described above, the cartridge according to the fifteenth mode is formed of resin. Demarcation as described above of the aerosol channel by at least a part of the first component and the second component may be achieved by integrally die-molding each of the components in such a way that there is included a portion that forms a part of the recessed section mentioned above and there is included a portion at which at least a part of the component forms the aerosol channel. This enables an assembly step or a bonding step necessary in the case of molding separate bodies to be omitted, and because there are no fitting sections or bonded parts, the component can be easily handled and is not easily broken when a consumer holds it in his/her hand at the time of use in spite of being a small resin component. However, designs are restricted with respect to shapes of the recessed section and the aerosol channel in such a way that the two components may each be allowed to be integrally die-molded. 
     A sixteenth mode is summarized as the cartridge according to the fourteenth or fifteenth mode, the cartridge including a space capable of containing the aerosol source, where at least a part of the space is demarcated by at least one of the first component and the second component. 
     According to the sixteenth mode, because at least one of the first component and the second component demarcates a space that is capable of containing the aerosol source, exposure of a leftover material in such a space may be prevented, and erroneous recognition of mixing of a foreign substance in the aerosol source may be prevented. Furthermore, as described above, the cartridge according to the sixteenth mode citing the fourteenth mode and the fifteenth mode is formed of resin. Provision of the space that is capable of containing the aerosol source and demarcation of at least a part of the space by at least one of the first component and the second component described above may be achieved by integrally die-molding each of the components in such a way that there is included a portion that forms a part of the recessed section mentioned above or there is included a portion at which at least a part of the component forms the aerosol channel, and in such a way that there is included a portion that forms the space that is capable of containing the aerosol source. The effects described in the fifteenth mode may thus also be obtained. 
     A seventeenth mode is summarized as the cartridge according to any one of the fourteenth to sixteenth modes, where at least a part of the heating element is housed in at least one of the first component and the second component. 
     According to the seventeenth mode, because at least one of the first component and the second component houses at least a part of the heating element, exposure of a leftover material to such a heating element may be prevented. Furthermore, the cartridge according to the seventeenth mode may be easily used at the time of use by a consumer because assembly with the heating element is not required. 
     An eighteenth mode is summarized as the cartridge according to any one of the fourteenth to seventeenth modes, where the second component includes a first opening formed in the facing surface, and a first opening edge that demarcates at least a part of the first opening, and the other end of the connection section is joined or welded to the end surface of the second component, at a position away from the first opening edge. 
     According to the eighteenth mode, exposure of a leftover material in the first opening may be prevented. 
     A nineteenth mode is summarized as the cartridge according to the eighteenth mode, where the first opening has an annular shape when seen along a direction in which the connection section extends between the first component and the second component, the first opening edge includes an opening outer edge and an opening inner edge that demarcate the first opening, the connection section includes a first connection section and a second connection section, each of the first connection section and the second connection section has one end connected to the first component and another end joined or welded to the second component, and has an annular shape when seen along a direction in which the first connection section and the second connection section extend between the first component and the second component, the second connection section is positioned more inward from the first connection section when seen along the direction in which the second connection section extends between the first component and the second component, the other end of the first connection section is joined or welded to the second component, at a position away from the opening outer edge, and the other end of the second connection section is joined or welded to the second component, at a position away from the opening inner edge. 
     According to the nineteenth mode, melted materials (leftover materials) from the first connection section and the second connection section may be prevented from being exposed in the first opening. 
     A twentieth mode is summarized as the cartridge according to the nineteenth mode, where the second component includes a second opening that is positioned more inward from the first opening when seen along the direction in which the second connection section extends between the first component and the second component, and a second opening edge that demarcates at least a part of the second opening, and the other end of the second connection section is joined or welded to the second component, at a position away from the second opening edge. 
     According to the twentieth mode, a melted material (a leftover material) from the second connection section may be prevented from being exposed in the second opening. 
     A twenty-first mode is summarized as the cartridge according to any one of the fourteenth to twentieth modes, where the first component includes an extending section that extends, in a direction perpendicular to a direction of extension of the connection section, from the one end of the connection section toward the outermost edge of the second component. 
     According to the twenty-first mode, because the first component includes the extending section, a leftover material may be prevented from being exposed to outside from a gap between the first component and the second component. 
     According to a twenty-second mode, there is provided a manufacturing method of the cartridge according to any one of the fourteenth to twenty-first mode. In the manufacturing method of the cartridge, the first component is a lid member, and the second component is a cylindrical member. The manufacturing method of the cartridge includes connecting a heating assembly including the heating element to one end of the cylindrical member and closing an opening on the one end of the cylindrical member, filling an inside of the cylindrical member, to which the heating assembly is connected, with the aerosol source, and joining or welding the connection section to another end of the cylindrical member filled with the aerosol source. 
     When the aerosol source is put in a cylindrical member with a bottom to which the heating assembly is not assembled, up to assembly of the heating assembly has to be completed to prevent leakage of the aerosol source from the cylindrical member. By contrast, according to the twenty-second mode, the heating assembly can be assembled with the cylindrical member before filling with the aerosol source is performed, and thus, for example, the cylindrical member to which the heating assembly is connected may be manufactured in advance as one unit and then be transported, and filling with the aerosol source and joining or welding of the lid member may be performed at another place. 
     A twenty-third mode is summarized as the manufacturing method of the cartridge according to the twenty-second mode, the manufacturing method including ultrasonically welding the connection section of the lid member to the other end of the cylindrical member. 
     According to a twenty-fourth mode, there is provided a cartridge that is assembled in a part of a vapor product that includes a heating element for heating an aerosol source. The cartridge includes a first component and a second component, at least one of which being formed of resin, and a connection section whose one end is connected to the first component and whose another end is joined or welded to the second component. The first component includes a first facing surface that faces the second component, and a first outermost edge of the first facing surface. The second component includes a second facing surface that faces the first component, and a second outermost edge of the second facing surface. The first outermost edge and the second component are not joined or welded to each other, and the second outermost edge and the first component are not joined or welded to each other. 
     When the first outermost edge or the second outermost edge is joined or welded to a component, a melted material (a leftover material) from these parts is exposed to outside the components. According to the twenty-fourth mode, the first outermost edge of the first component and the second outermost edge of the second component are not joined or welded to any part, and thus, the first outermost edge and the second outermost edge are not melted, and exposure of leftover materials therefrom to outside the components may be prevented. Additionally, in the present specification, the “first facing surface” of the first component and the “second facing surface” of the second component are surfaces of the first component and the second component that directly face each other in the direction in which the connection section extends between the first component and the second component. Members other than the connection section are not present between the facing surface of the first component and the facing surface of the second component. The “facing surfaces” of the first component and the second component may also be said to be surfaces that are at an angle relative to the direction in which the connection section extends between the first component and the second component. 
     A twenty-fifth mode is summarized as the cartridge according to the twenty-fourth mode, the cartridge including an aerosol channel where aerosol that is generated by evaporation of the aerosol source passes through, where at least a part of the aerosol channel is demarcated by at least one of the first component and the second component. 
     According to the twenty-fifth mode, because the aerosol channel is demarcated by at least one of the first component and the second component, a leftover material may be prevented from being exposed in such an aerosol channel, and condensation of aerosol on a leftover material may be prevented. Furthermore, as described above, the cartridge according to the twenty-fifth mode is formed of resin. Demarcation as described above of the aerosol channel by at least a part of the first component and the second component may be achieved by integrally die-molding each of the components in such a way that there is included a portion that forms a part of the recessed section mentioned above and there is included a portion at which at least a part of the component forms the aerosol channel. This enables an assembly step or a bonding step necessary in the case of molding separate bodies to be omitted, and because there are no fitting sections or bonded parts, the component can be easily handled and is not easily broken when a consumer holds it in his/her hand at the time of use in spite of being a small resin component. However, designs are restricted with respect to shapes of the recessed section and the aerosol channel in such a way that the two components may each be allowed to be integrally die-molded. 
     A twenty-sixth mode is summarized as the cartridge according to the twenty-fourth or twenty-fifth mode, the cartridge including a space capable of containing the aerosol source, where at least a part of the space is demarcated by at least one of the first component and the second component. 
     According to the twenty-sixth mode, because at least one of the first component and the second component demarcates a space that is capable of containing the aerosol source, exposure of a leftover material in such a space may be prevented, and erroneous recognition of mixing of a foreign substance in the aerosol source may be prevented. Furthermore, as described above, the cartridge according to the twenty-sixth mode citing the twenty-fourth mode and the twenty-fifth mode is formed of resin. Provision of the space that is capable of containing the aerosol source and demarcation of at least a part of the space by at least one of the first component and the second component described above may be achieved by integrally die-molding each of the components in such a way that there is included a portion that forms a part of the recessed section mentioned above or there is included a portion at which at least a part of the component forms the aerosol channel, and in such a way that there is included a portion that forms the space that is capable of containing the aerosol source. The effects described in the twenty-fifth mode may thus also be obtained. 
     A twenty-seventh mode is summarized as the cartridge according to any one of the twenty-fourth to twenty-sixth modes, where at least a part of the heating element is housed in at least one of the first component and the second component. 
     According to the twenty-seventh mode, because at least one of the first component and the second component houses at least a part of the heating element, exposure of a leftover material to such a heating element may be prevented. Furthermore, the cartridge according to the twenty-seventh mode may be easily used at the time of use by a consumer because assembly with the heating element is not required. 
     A twenty-eighth mode is summarized as the cartridge according to any one of the twenty-fourth to twenty-seventh modes, where the first outermost edge and the second outermost edge are not joined or welded to each other. 
     When the first outermost edge of the first component and the second outermost edge of the second component are joined or welded to each other, a leftover material is exposed from the first outermost edge and the second outermost edge. By contrast, according to the twenty-eighth mode, because the first outermost edge and the second outermost edge are not joined or welded to each other, exposure of a leftover material from the first outermost edge and the second outermost edge may be prevented. 
     A twenty-ninth mode is summarized as the cartridge according to the twenty-eighth mode, the cartridge including a gap between the first outermost edge and the second outermost edge. 
     According to the twenty-ninth mode, because there is a gap where a leftover material generated between the first component and the second component may be retained, exposure, to outside, of the leftover material generated from the connection section that is joined or welded to the second component may be better prevented. 
     A thirtieth mode is summarized as the cartridge according to any one of the twenty-fourth to twenty-ninth modes, where the second component includes a first opening formed in the second facing surface, and a first opening edge that demarcates at least a part of the first opening, and the first opening edge is not joined or welded to the first component. 
     According to the thirtieth mode, because the first opening edge is not joined or welded to the first component, a leftover material is not generated from the first opening edge, and exposure of a leftover material in the first opening may be prevented. 
     A thirty-first mode is summarized as the cartridge according to the thirtieth mode, where the first opening has an annular shape when seen along a direction in which the connection section extends between the first component and the second component, the first opening edge includes an opening outer edge and an opening inner edge that demarcate the first opening, and the opening outer edge and the opening inner edge are not joined or welded to the first component. 
     According to the thirty-first mode, because the opening outer edge and the opening inner edge are not joined or welded to the first component, exposure of a leftover material from the opening outer edge and the opening inner edge in the first opening may be prevented. 
     A thirty-second mode is summarized as the cartridge according to the thirty-first mode, where the second component includes a second opening that is formed in the second facing surface and that is positioned more inward from the first opening when seen along the direction in which the connection section extends between the first component and the second component, and a second opening edge that demarcates at least a part of the second opening, and the second opening edge is not joined or welded to the first component. 
     According to the thirty-second mode, because the second opening edge is not joined or welded to the first component, a leftover material is not generated from the second opening edge, and exposure of a leftover material in the second opening may be prevented. 
     A thirty-third mode is summarized as the cartridge according to any one of the twenty-fourth to thirty-second modes, where the first facing surface of the first component and the second facing surface of the second component are not joined or welded to each other. 
     According to the thirty-third mode, because the first facing surface of the first component and the second facing surface of the second component are not joined or welded to each other, a leftover material may be prevented from being generated from the first facing surface and the second facing surface, and as a result, exposure of a leftover material to outside may be prevented. 
     According to a thirty-fourth mode, there is provided a manufacturing method of the cartridge according to any one of the twenty-fourth to thirty-third modes. In the manufacturing method of the cartridge, the first component is a lid member, and the second component is a cylindrical member. The manufacturing method of the cartridge includes connecting a heating assembly including the heating element to one end of the cylindrical member and closing an opening on the one end of the cylindrical member, filling an inside of the cylindrical member, to which the heating assembly is connected, with the aerosol source, and joining or welding the connection section to another end of the cylindrical member filled with the aerosol source. 
     When the aerosol source is put in a cylindrical member with a bottom to which the heating assembly is not assembled, up to assembly of the heating assembly has to be completed to prevent leakage of the aerosol source from the cylindrical member. By contrast, according to the thirty-fourth mode, the heating assembly can be assembled with the cylindrical member before filling with the aerosol source is performed, and thus, for example, the cylindrical member to which the heating assembly is connected may be manufactured in advance as one unit and then be transported, and filling with the aerosol source and joining or welding of the lid member may be performed at another place. 
     A thirty-fifth mode is summarized as the manufacturing method of the cartridge according to the thirty-third mode, the manufacturing method including ultrasonically welding the connection section of the lid member to the other end of the cylindrical member. 
     According to a thirty-sixth mode, there is provided the manufacturing method of the cartridge according to any one of the twenty-fourth to thirty-third modes. The manufacturing method of the cartridge includes joining or welding the other end of the connection section to the second component in such a way that the first facing surface of the first component and the second facing surface of the second component are not joined or welded to each other. 
     According to the thirty-sixth mode, because the first facing surface of the first component and the second facing surface of the second component are not joined or welded to each other, a leftover material may be prevented from being generated from the first facing surface and the second facing surface, and as a result, exposure of a leftover material to outside may be prevented. 
     According to a thirty-seventh mode, there is provided a cartridge that is assembled in a part of a vapor product that includes a heating element for heating an aerosol source. The cartridge includes a first component and a second component, at least one of which being formed of resin, a connection section that extends between the first component and the second component, with one end connected to the first component and another end connected to the second component, and a guide section that extends from the first component, and that is not joined or welded to the second component. The second component includes a receiving section where the guide section fits. 
     According to the thirty-seventh mode, the first component includes the guide section, and the second component includes the receiving section, and thus, when connecting the first component and the second component by the connection section, the first component may be positioned relative to the second component by fitting the guide section in the receiving section. Furthermore, because the guide section is not joined or welded to the second component, generation of a leftover material from the guide section may be prevented. Additionally, to “fit” in the present specification refers not only to a case where the guide section and the receiving section are fitted together without a gap, but also to a case where the guide section is fitted in the receiving section with a gap provided between the guide section and the receiving section, the gap being such that the position of the connection section relative to the second component may be guided to an allowable range. That is, to “fit” in the present specification may also mean to “loosely fit”. 
     A thirty-eighth mode is summarized as the cartridge according to the thirty-seventh mode, the cartridge including an aerosol channel where aerosol that is generated by evaporation of the aerosol source passes through, where at least a part of the aerosol channel is demarcated by at least one of the first component and the second component. 
     According to the thirty-eighth mode, at least one of the first component and the second component demarcates the aerosol channel, and thus, at a time of connecting the first component and the second component by the connection section, positioning of the connection section and the first component relative to the second component may be performed at the component that demarcates such an aerosol channel, by fitting the guide section in the receiving section. Furthermore, a leftover material may be prevented from being generated from the guide section at the component that demarcates the aerosol channel. Furthermore, as described above, the cartridge according to the thirty-eighth mode is formed of resin. Demarcation as described above of the aerosol channel by at least a part of the first component and the second component may be achieved by integrally die-molding each of the components in such a way that there is included a portion at which at least a part of the component forms the aerosol channel. This enables an assembly step or a bonding step necessary in the case of molding separate bodies to be omitted, and because there are no fitting sections or bonded parts, the component can be easily handled and is not easily broken when a consumer holds it in his/her hand at the time of use in spite of being a small resin component. However, the design is restricted with respect to shape of the aerosol channel in such a way that the two components may each be allowed to be integrally die-molded. 
     A thirty-ninth mode is summarized as the cartridge according to the thirty-seventh or thirty-eighth mode, the cartridge including a space capable of containing the aerosol source, where at least a part of the space is demarcated by at least one of the first component and the second component. 
     According to the thirty-ninth mode, at least one of the first component and the second component demarcates the space capable of containing the aerosol source, and thus, at a time of connecting the first component and the second component by the connection section, positioning of the connection section and the first component relative to the second component may be performed at the component that demarcates such a space, by fitting the guide section in the receiving section. Furthermore, a leftover material may be prevented from being generated from the guide section at the component that demarcates the space. Furthermore, as described above, the cartridge according to the thirty-ninth mode citing the thirty-seventh and thirty-eighth modes is formed of resin. Provision of the space that is capable of containing the aerosol source and demarcation of at least a part of the space by at least one of the first component and the second component described above may be achieved by integrally die-molding each of the components in such a way that there is included a portion at which at least a part of the component forms the aerosol channel and there is included a portion that forms the space that is capable of containing the aerosol source. The effects described in the thirty-eighth mode may thus also be obtained. 
     A fortieth mode is summarized as the cartridge according to any one of the thirty-seventh to thirty-ninth modes, where at least a part of the heating element is housed in at least one of the first component and the second component. 
     According to the fortieth mode, at least one of the first component and the second component houses at least a part of the heating element, and thus, at a time of connecting the first component and the second component by the connection section, positioning of the connection section and the first component relative to the second component may be performed at the component that houses such a heating element, by fitting the guide section in the receiving section. Furthermore, a leftover material may be prevented from being generated from the guide section at the component that houses the heating element. Furthermore, the cartridge according to the fortieth mode may be easily used at the time of use by a consumer because assembly with the heating element is not required. 
     A forty-first mode is summarized as the cartridge according to any one of the thirty-seventh to fortieth modes, where the guide section is disposed to overlap the other end of the connection section when seen along a direction perpendicular to a direction in which the connection section extends between the first component and the second component. 
     According to the forty-first mode, because the guide section is disposed to cover the other end of the connection section from a side, a leftover material that is generated when the connection section is joined or welded to the second component is covered by the guide section and is prevented from being exposed. 
     A forty-second mode is summarized as the cartridge according to any one of the thirty-seventh to forty-first modes, where the second component includes a facing surface that faces the first component, a first opening formed in the facing surface, and a first opening edge that demarcates at least a part of the first opening, and the receiving section is the first opening. 
     According to the forty-second mode, the connection section and the first component may be positioned relative to the second component by fitting the guide section in the first opening. At this time, because the guide section is fitted in the first opening, a leftover material that is generated from the connection section is prevented by the guide section from being exposed to the first opening. In other words, the guide section may prevent the leftover material from entering the first opening. Additionally, in the present specification, the “facing surfaces” of the first component and the second component refer to surfaces that directly face each other in the direction in which the connection section extends between the first component and the second component. Members other than the connection section are not present between the facing surface of the first component and the facing surface of the second component. The “facing surfaces” of the first component and the second component may also be said to be surfaces that are at an angle relative to the direction in which the connection section extends between the first component and the second component. 
     A forty-third mode is summarized as the cartridge according to the forty-second mode, where the first opening has an annular shape when seen along a direction in which the connection section extends between the first component and the second component, the first opening edge includes an opening outer edge and an opening inner edge that demarcate the first opening, and the guide section fits with the opening outer edge or the opening inner edge, the guide section having an annular shape when seen along the direction in which the connection section extends between the first component and the second component. 
     According to the forty-third mode, the guide section having an annular shape is fitted with the opening outer edge or the opening inner edge of the first opening, and the connection section and the first component may thus be positioned relative to the second component. At this time, because the guide section is fitted with the opening outer edge or the opening inner edge, a leftover material that is generated from the connection section may be prevented by the guide section from being exposed to the first opening. In other words, the guide section may prevent the leftover material from entering the first opening. 
     According to a forty-fourth mode, there is provided a manufacturing method of the cartridge according to any one of the thirty-seventh to forty-third modes. In the manufacturing method of the cartridge, the first component is a lid member, and the second component is a cylindrical member. The manufacturing method of the cartridge includes connecting a heating assembly including the heating element to one end of the cylindrical member and closing an opening on the one end of the cylindrical member, filling an inside of the cylindrical member, to which the heating assembly is connected, with the aerosol source, and joining or welding the connection section to another end of the cylindrical member filled with the aerosol source. 
     When the aerosol source is put in a cylindrical member with a bottom to which the heating assembly is not assembled, up to assembly of the heating assembly has to be completed to prevent leakage of the aerosol source from the cylindrical member. By contrast, according to the forty-fourth mode, the heating assembly can be assembled with the cylindrical member before filling with the aerosol source is performed, and thus, for example, the cylindrical member to which the heating assembly is connected may be manufactured in advance as one unit and then be transported, and filling with the aerosol source and joining or welding of the lid member may be performed at another place. 
     A forty-fifth mode is summarized as the manufacturing method of the cartridge according to the forty-fourth mode, the manufacturing method including ultrasonically welding the connection section of the lid member to the other end of the cylindrical member. 
     According to a forty-sixth mode, there is provided a manufacturing method of the cartridge according to any one of the thirty-seventh to forty-third modes. The manufacturing method of the cartridge includes fitting the guide section in the receiving section and positioning the first component and the second component relative to each other, and joining or welding the other end of the connection section to the second component. 
     According to the forty-sixth mode, at the time of joining or welding, to the second component, the connection section that is connected to the first component, the connection section and the first component may be positioned relative to the second component by fitting the guide section in the receiving section. 
     A forty-seventh mode is summarized as the manufacturing method of the cartridge according to the forty-sixth mode, where the guide section extends in parallel to the connection section, and is, in a direction in which the connection section extends, longer than the connection section before the connection section is joined or welded to the second component, and the manufacturing method includes fitting the guide section in the receiving section and positioning the first component and the second component relative to each other before the other end of the connection section is joined or welded to the second component. 
     According to the forty-seventh mode, because the guide section is longer than the connection section that is not yet joined or welded to the second component, the first component and the second component may be positioned relative to each other before the connection section that is connected to the first component is joined or welded to the second component. 
     According to a forty-eighth mode, there is provided a vapor product including the cartridge according to any one of the first to forty-seventh modes. 
     REFERENCE SIGNS LIST 
     
         
           30 : cartridge 
           33   b:  heating wire 
           38 : heating assembly 
           50 : tank 
           51 : opening 
           52 : circumferential wall 
           52   a:  space 
           60 : tank main body 
           60   a:  first end portion 
           60   b:  second end portion 
           61   a:  aerosol channel 
           65 : facing surface 
           65   a:  outermost edge 
           66 : first opening 
           66   a:  opening inner edge 
           66   b:  opening outer edge 
           67 : second opening 
           67   a:  second opening edge 
           68 : first recessed section 
           68   a:  bottom section 
           68   b:  tapered surface 
           69 : second recessed section 
           69   a:  bottom section 
           69   b:  tapered surface 
           80 : lid 
           80   a:  flat plate section 
           80   b:  opening 
           80   c:  outermost edge 
           80   d:  facing surface 
           80   e:  opening edge 
           82 : extending section 
           90 : first connection section 
           92 : second connection section 
           95 : guide section 
           100 : vapor product 
         L 1 : aerosol source