Abstract:
The tip-stop mechanism for an aerosol container has a needle valve placed into a passage area and closes discharge hole due to plate springs engagement with tapered surfaces of the needle valve. An operation lever is supported on a pivot shaft and when pressed downward forces a portion of the lever to cause the needle valve to move backward, opening the discharge hole. After that, the operation lever engages the upper surface of the spout and moves downward together with the spout and the stem, thereby the lever is shifted to an operation mode.

Description:
TECHNICAL FIELD OF THE INVENTION 
       [0001]    The present invention relates to a tip-stop mechanism capable of preventing a content remaining in a passage region located in the vicinity of a discharge outlet from leaking out of the discharge outlet to an external space by closing the discharge outlet when discharge operation of the content in a container body is finished, i.e., capable of preventing hardening in a pump type container and outer draw in an aerosol type container, and also relates to a pump type product and an aerosol type product equipped with the tip-stop mechanism. 
         [0002]    In the present specification, the side of the discharge outlet is assumed to be “front” while the opposite side thereto assumed “rear”. That is, a left side direction in  FIG. 1  is assumed to be “front” and a right side direction “rear”. 
         [0003]    The term “pump type” in the present specification indicates a system where a volume of a content accommodation space is reduced by permitting a user to press for example an operation part or part of a container such as a peripheral surface part and a content therein is discharged to an external space. This is a concept including a push-out type and a tube type. 
         [0004]    Contents, to which the present invention is applied, include varieties of articles as described later, starting with liquid or cream like soaps, shampoos, conditioners, cosmetics, expandable shaving foams, and hair styling foams for example. 
       BACKGROUND OF THE INVENTION 
       [0005]    A tip-stop mechanism, actively intending to prevent content hardening and deal with outer draw, is disclosed in Japanese Unexamined Patent Application Publication No. 2001-171764 for example described below. 
         [0006]    The tip-stop mechanism substantially comprises
   an operation button (cover),   a spout for content passage united with a container body side stem,   a horizontal (direction perpendicular to a moving direction of the operation button) type nozzle mounted on the spout   valve members (2 pieces) disposed in an internal space of the nozzle, and   an elastic body for energizing the valve member in a direction where the discharge outlet on the nozzle tip end side is closed.   
 
         [0012]    Herein, an action piece to the valve member is formed in the operation button, and a receiving part of one end of the elastic body is formed in the spout. 
         [0013]    The operation button (cover) is configured to block a valve member rear end side, so that the button, when the operation thereof changes from a stationary mode to an actuation mode by the operation of the operation button, receives and holds a valve member rear end side going back via the action piece during the operation. In the stationary mode and in the middle of changing to the actuation mode from the stationary mode the rear end side of the valve member has been separated from the receiving part of the operation button (cover). 
         [0014]    The valve member moves rearwardly against energizing force of the elastic body following the content discharge operation, whereby the content discharge outlet is set to the open state (actuation mode). 
         [0015]    When the content discharge operation is finished, the valve member returns to the initial state i.e. a blocked state of the content discharge outlet (=stationary state) by the energizing force of the elastic body. 
         [0016]    Prior art tip-stop mechanism are convenient in view of response at the time of starting and ending of its discharge of any content as described above. 
         [0017]    They however have drawbacks that when the sheath-shaped operation button (cover), nozzle, valve member, spout or the like are made integral into a tip-stop mechanism, there is needed a slightly complicated work of covering the cover for example from an upper side of the nozzle and valve member extending laterally such as the foregoing longitudinal direction to a vertical direction such as lower direction. The movement between the cover and the nozzle in the integrating work and the valve member is of course relative. 
         [0018]    For this there are needed the improvements or the like that integration works among the cover, nozzle, and valve member should be more effective and that a vertical slit formed in a cover front surface could otherwise be eliminated or not be formed such that a front protruded part of the nozzle passes the cover at the time of the integration. 
       OBJECTS OF THE INVENTION 
       [0019]    In the present invention, open regions are formed by opening the upper surface part of the spout and in the rear side peripheral wall part, and a rear side part of the valve member in the downstream cylindrical part (=downstream side passage reaching the discharge outlet to an external space of the spout) is exposed, and the exposed part is held from its rear part while undergoing elastic force to the forward by a cover structure (peripheral wall cover structure) of the peripheral wall opening part, and further operation members of a rotary type and a vertical type disposed in the upper surface open region of the spout are employed. The spout used here indicates the mode including the foregoing nozzle. 
         [0020]    It is an object of the present invention to make effective and simple assembling work of a tip-stop mechanism by enabling a valve member to be assembled into a downstream cylindrical part of a spout from a rear surface side thereof in the state where the cover is not mounted on the rear side peripheral wall opening part, and further mounting the operation member of the foregoing each type for actuation mode setting into the open region (concave part) of the spout upper surface. 
         [0021]    It is another object of the present invention to make further effective the assembling work and reduce costs of products by reducing the number of components of the entire tip-stop mechanism by integrally forming an elastic member for energizing the valve member frontally on the peripheral wall cover in the form of a leaf spring, and further integrally forming the spout and the operation member of the rotary type. 
         [0022]    It is further another object of the present invention to make smooth the vertical movement of the operation member itself at the time of the pressing operation of the operation member and at the time of releasing of the pressing operation by providing a leaf spring on a leg part guided to an internal peripheral surface part of a peripheral wall e.g., a recessed part constituting the open region or on a downstream cylindrical part of the spout, the leaf spring making contact with the leg part of the downstream cylindrical part from above thereof, for the operation member of the vertical movement type mounted in the open region in the upper surface of the spout. 
       SUMMARY OF THE INVENTION 
       [0023]    These and other objects are obtained by the tip-stop mechanism, in which a discharge outlet (e.g., discharge holes  1   h,    11   h,    21   h,    31   h  described later) provided on a front side thereof undergoes initial setting to a closed state owing to the action of elastic force and changes from a closed state up to that time to an open state based on the content discharge operation of a user. Broadly,
   (1) the present invention is designed as a tip-stop mechanism comprising:
       1. a spout (e.g., spout  1 ,  11 ,  21 ,  31  described later) including a downstream cylindrical part constituting a linear downstream passage (e.g., longitudinal passage  1   f,    11   f,    21   f,    31   f  described later) reaching said discharge outlet, an upstream cylindrical part constituting an upstream passage (e.g., vertical passage  1   e,    31   e  described later) leading to an output part (e.g., stem  5  described later) on the side of a container body, a peripheral wall part with the downstream passage opened at a rear extension part thereof, and an upper surface open region (e.g., open region  1   a,    11   a,    21   a,    31   a  described later);   2. a valve member provided (e.g., needle valve  2 ,  12 ,  22  described later) movably on the downstream passage for implementing opening/closing operation with respect to said discharge outlet;   3. a peripheral wall cover (e.g., peripheral rear cover  3 ,  13 ,  23  described later) mounted on the opening part of the peripheral wail section of said spout for supporting a rear exposed section side of the valve member;   4. an elastic member (e.g., leaf spring  3   b,    23   b  and coil spring  15  described later) provided on the side of said peripheral wall cover for energizing said valve member in a front direction where said discharge outlet is closed; and   5. an operation member (e.g., operation member  4 ,  14 ,  24 , and operation button  34  described later) disposed in an upper surface opening region of the spout for moving the valve member rearwardly, by making part thereof act on a rear exposed part of said the member following setting operation of the actuation mode.   
       (2) in (1) as the elastic member there is used a first lead spring formed on the peripheral wall cover body (e.g., peripheral wall cover  3 ,  23  described later) is used.   (3) in (2) as the first leaf spring (e.g., leaf spring  3   b,  U-shaped leaf spring  23   b  described later) there is used one (e.g., U-shaped leaf spring  23   b  described later) integrally formed with the valve member (e.g., needle valve  22  described later) and the peripheral wall cover body (e.g., peripheral wall rear cover  23  described later).   (4) in (1) as the elastic member a coil spring (e.g., coil spring  25  described later) separated from the peripheral wall cover (e.g., peripheral wall rear cover  13  described later) is used.   (5) in (1) to (4) as the operation member one (operation lever  4 ,  14 ,  24  described later) of a rotary type is used.   (6) in (5) as the operation member of the rotary type there is used one (e.g., operation lever  24  described later) formed integrally, in the state where a rotation base part (e.g., hinge-shaped part  24   a  described later) of the operation member is coupled with the spout (e.g., spout  21  described later) in front of the upper surface open region (e.g., open region  21   a  described later).   (7) in (1) to (4), as the operation member there is used one (e.g., operation member  34  described later) of a vertical movement type.   (8) in (7) as the operation member of the vertical movement type there is used one including a leg part (e.g., fractional part  34   c,    34   d  described later) moving vertically in accordance with the guide part (e.g., guide recessed part  34   c,    34   d  described later) formed on the internal peripheral surface of the peripheral surface part, and a second leaf spring (e.g., leaf spring  34   a  described later) making contact with (abutting on) the outer peripheral surface (e.g., upper outer peripheral surface  31   g  described later) of the downstream cylindrical part from above thereof and displaced in the form resisting elastic force of itself at the time of lowering movement of the operation member associated with the setting operation of the operation mode.   
 
         [0037]    The tip-stop mechanism described above, and an aerosol type product and a pump type product both including the tip-stop mechanism are objects of the present invention. 
       EFFECT OF THE INVENTION 
       [0038]    In accordance with the present invention, as described above, the valve member can be assembled into the downstream cylindrical part from a rear surface side thereof in the state where the cover is not mounted on the peripheral wall opening part, and also for the operation mode for operation mode setting only the rotary shaft may be mounted on the upper surface opening part of the spout so that it is possible to make effective and simple the assembling work of the tip-stop mechanism. 
         [0039]    The operation member for operation mode setting is disposed in the upper surface opening region set inside the peripheral wall part of the spout, so that there is eliminated the need of the foregoing vertical slit that is an essential component in the case of the conventional operation member. 
         [0040]    The elastic member for energizing the valve member frontally is formed integrally on the peripheral wall cover in the form of a leaf spring and the spout and the rotary type operation member are integrally formed, so that it is possible to reduce the number of components of the whole tip-stop mechanism and so make more effective the assembling work and reduce the costs of products. 
         [0041]    The legs guided to the internal peripheral surface part of the peripheral wall part constituting the upper surface open region of the spout and the leaf spring abutting on the downstream cylindrical part of the spout from above thereof are provided on the vertical movement type operation member, so that it is possible to make smooth the vertical movement of the operation member itself at the time of pressing operation of the operation member and at the time of releasing of the pressing operation. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0042]    These and other aspects of the present invention may be more fully understood by reference to one or more of the following drawings: 
           [0043]      FIG. 1  is views, each in cross sectional state, illustrating a tip-stop mechanism using an operation member of a rotary type (first case) in (a) a stationary mode or (b) an actuation mode (embodiment 1); 
           [0044]      FIG. 2  is a view illustrating a relationship among respective components (4) of the tip-stop mechanism of  FIG. 1  (embodiment 1); 
           [0045]      FIG. 3  is a view illustrating a relationship among components (5) of the tip-stop mechanism using an operation member of a rotary type (second case) (embodiments 2); 
           [0046]      FIG. 4  is a view illustrating a relationship between components (2) of the tip-stop mechanism using an operation member of a rotary type (third case) (embodiment 3); 
           [0047]      FIG. 5  is views, each in cross section, illustrating a tip-stop mechanism using an operation member of a vertical type (a) in stationary mode and (b) in actuation mode (example 4); and 
           [0048]      FIG. 6  is a view illustrating a relationship among components (4) of a chip stop mechanism of  FIG. 5  (embodiment 4). 
       
    
    
     DESCRIPTION OF REFERENCE CHARACTERS 
       [0049]    The following components indicated by reference numbers each with an alphabet (e.g., vertical passage  1   a ) denote parts of those without alphabet (e.g., spout  1 ). 
         [0050]    Further, 1 digit reference numbers ( 1  to  5 ) are employed in  FIGS. 1 and 2 ; 
         [0051]    There are employed 11th to 15th reference numbers in  FIG. 3 ;
   21th, to 24th in  FIG. 4 ; and there are employed 31th to 34th in  FIGS. 5 and 6 , with reference numbers  2 ,  3  employed in  FIGS. 5 and 6 .   
 
         [0053]    The following numbers  1 ,  11 ,  21 ,  31  and those with alphabet concern the spout respectively.
     1 ,  11 ,  21 ,  31 : spout mounted on (fitted to) a stem  5  on the side of a container body described later;     1   a,    11   a,    21   a,    31   a:  a recessed open region extending from the upper surface of the spout to a rear side peripheral surface;     1   b,    11   b:  a pair of recessed parts formed in a front side peripheral surface of the open region  1   a,    11   a  for supporting a rotary shaft of an operation lever  4 ,  14  described later;     1   c,    11   c,    21   c,    31   c:  a pair of recessed parts formed at an erected surface part of a rear side step part of the open region  1   a,    11   a,    21   a,    31   a  for engageably holding a peripheral wall rear part cover  3 ,  13 ,  23  described later;     1   d,    21   d,    31   d:  a single groove part formed on a surface part in a rear side step part longitudinal direction of the open region  1   a,    21   a,    31   a  for guiding needle valve  2 ,  22  (lower protruded part  2   d,    22   d ) described later;     11   d:  a pair of groove parts formed on a surface part of the open region  11   a  in a rear side step part longitudinal direction for guiding a needle valve  12  (lower protruded part  12   d ) described later;     1   e,    31   e:  a cylindrical vertical passage constituting an upstream side of a content passage space region of the spout  1 ,  31 ;     1   f,    11   f,    21   f,    31   f:  a cylindrical longitudinal passage (nozzle equivalent part) constituting a downstream side leading to a vertical passage;  1   g,    11   g,    21   g:  a cylindrical upper side outer peripheral surface (flat plane part) constituting the longitudinal passage  1   f,    11   f,    21   f;        31   g:  a cylindrical upper side outer peripheral surface (curved part) constituting the longitudinal passage  31   f;        1   h,    11   h,    21   h,    31   h:  a discharge hole formed at a front end part on the longitudinal passage  1   f,    11   f,    21   f;        21   j,    21   k:  a pair of guide recessed parts for holding rotatably an operation lever  24  after assembled described later between its stationary mode and actuation mode; and     31   i,    31   k:  a pair of guide recessed parts for holding the operation button  34  vertically movably between the positions in the stationary mode and actuation mode.   
 
         [0066]    The following reference numbers  2 ,  12 ,  22  with and without alphabet concern a needle valve.
     2 ,  12 ,  22 : a needle valve disposed to enter a longitudinal passage  1   f,    11   f,    21   f,    31   f  of the spout  1 ,  11 ,  21 ,  31 ;     2   a,    12   a,    22   a:  a conical part formed on the tip end of the needle valve to act as a valve of a discharge hole  1   h,    11   h,    21   h,    31   h;        2   b,    12   b,    22   b:  an annular sealing part located in close contact with the internal peripheral surface of the longitudinal passage  1   f,    11   f,    21   f,    31   f  for preventing any content in the passages from leaking to a rear side;     2   c:  a pair of tapered faces formed at needle valve rear side part (rear side part from the annular sealing part) exposed from the longitudinal passage  1   f,    31   f  and abutting on a leaf spring  3   b  described later;     12   c:  a sheath-shaped part formed at the needle valve rear side part exposed from the longitudinal passage  11   f  to accommodate a front end of a coil spring  15  described later;     2   d,    22   d:  a single lower protruded part formed at a needle valve rear side part exposed from the longitudinal passage  1   f,    21   f,    31   f  to move along a groove part  1   d,    21   d,    31   d  of the spout  1 ,  21 ,  31 ;     12   d:  a pair of lower protruded parts formed at the needle valve rear side part exposed from the longitudinal passage  11   f  to move along the groove part  11   d  of the spout  11 ;     2   e,    22   e:  a single tapered receiving part formed on an upper surface part of the downward protruded part  2   d,    22   d  for converting a movement (turning or downward movement) of an operation lever  4 ,  24  described later to a linear movement in a front direction of the needle valve  2 ,  22  by a receiving part (single piece  4   b,    24   b,    34   b ) of the operation lever  4 ,  24  and of the operation button  34 ;     12   e:  a pair of tapered receiving parts formed on the upper surfaces of a pair of downward protruded parts  12   d  for converting a movement (rotation) of an operation lever  14  described later to a linear movement in a front direction of a needle valve  12  by receiving part (a pair of pieces  14   b ) of the operation lever  14 .   
 
         [0076]    The following reference numbers  3 ,  13 ,  23  with and without alphabet concern a peripheral wall rear cover.
     3 ,  13 ,  23 : peripheral wall rear part cover     3   a,    13   a,    23   a:  a pair of legs (tapered face plus engaging step part) engaged and held by the recessed part  1   c,    11   c,    21   c,    31   c  of the spout  1 ,  11 ,  21 ,  31 ;     3   b:  a pair of flat face leaf springs abutting on the tapered face  2   c  of the needle valve for energizing the valve in a front direction;     23   b:  a pair of U-shaped leaf springs integrally formed with the needle valve  22   b  and the peripheral wall rear part cover  23  for energizing the valve in a front direction.   
 
         [0081]    The following reference numbers  4 ,  14 ,  24  with and without alphabet concern the operation lever illustrated in  FIGS. 1 to 4 .
     4 ,  14 ,  24 : operation lever of a rotary type     4   a,    14   a:  a pair of rotary shafts     24   a:  a hinged part, a connection part between the spout  21  and the operation lever  24  serving as a rotation base part upon the lever operation;     4   b,    24   b:  a single piece for driving needle valve abutting on the receiving part  2   e,    22   e  of the needle valve  2 ,  22  after assembled for releasing a closed state between discharge holes  1   h,    21   h  and the conical parts  2   a,    22   a  up to that time by moving the valve backward when the operation levers  4 ,  24  are rotated (upon setting operation of the actuation mode);     14   b:  a pair of pieces for driving the needle valve  12  backward upon the rotation operation of the operation lever  14 ;     24   c,   24   d:  a pair of pieces (tapered face plus engaging step part) formed at an illustrated portion on the outer peripheral surface of the operation lever  24  and held rotatably in a guide recessed part  21   j,    21   k  of the spout  21  upon assembling by turning the lever clockwise in the figure.   
 
         [0088]    The following reference number  34  with or without alphabet concerns the operation button in  FIGS. 5 and 6 .
     34 : operation button of vertical movement type;     34   a:  a pair of hung leaf springs abutting on an upper outer peripheral surface (curved part)  31   g  of the spout  31  at its end side, guided by the curved part following the actuation mode setting (downward movement) to displace to the outside resisting own elastic force;     34   b:  a needle valve driving single piece abutting on the receiving part  2   e  of the needle valve  2  after assembled by moving the valve backward upon depressing operation of the operation button  34  for releasing a closed state (stationary mode) between the discharge hole up to that time and the conical part;     34   c,    34   d:  a pair of pieces (tapered face plus engaging step part) formed at an illustrated portion on the outer peripheral surface of the operation button  34  and held enabling depressing operation into the guide recessed parts  31   j,    31   k  of the spout when the button is pushed and assembled into the open region  31   a  of the spout  31  from above   
 
         [0093]    Reference numbers  5 ,  15  are used for other components.
     5 : a stem fitted to the spouts  1 ,  11 ,  21 ,  31  and including a well known valve mechanism element to the container body side (e.g., a discharge valve in case of a pump type product a discharge valve; in case of an aerosol type product, a content passage hole part closed by an annular rubber in the stationary mode);     15 : a coil spring disposed between the sheath-shaped part  12   c  of the needle valve  12  and the internal peripheral surface of the peripheral wall rear cover  13  for energizing the valve in a front direction.   
 
         [0096]    The spout  1 ,  11 ,  21 ,  31 , needle valve  2 ,  12 ,  22 , peripheral wall rear cover  3 ,  13 ,  23 , operation lever  4 ,  14 ,  24 , operation button  34 , and stem  5  etc. are made of plastic consisted of polypropylene, polyethylene, polyacetal, nylon, for example. The coil spring  15  is made of metal or plastic. 
         [0097]    Fundamental features of each illustrated tip-stop mechanism (embodiments 1 to 4) are substantially as follows:
   (11) The spout body part fitting to the stem  5  on the container body side and the nozzle equivalent part for accommodating the needle valve  2 ,  12 ,  22  are constructed in the form of the spout  1 ,  11 ,  21  composed of an integral molded product.   (12) When mounting the needle valve  2 ,  12 ,  22  and the peripheral wall rear cover  3 ,  13 ,  23  on the spout  1 ,  11 ,  21 , the needle valve is loaded into the longitudinal passage (nozzle equivalent portion)  1   f,    11   f,    21   f  of the spout from the rear thereof, and then the peripheral wall rear cover (in case of  FIG. 3 , after a front end side of the coil spring  15  is put into the sheath-shaped part  12   c  of the needle valve  12 ) is loaded from the rear of the needle valve;   (13) The operation lever  4 ,  14 ,  24  is mounted rotatably in the open region  1   a,    11   a,    21   a  of the spout, and the operation button  34  is disposed vertically movably in the open region  31   a  of the spout  31  in which each piece  4 ,  14 ,  24 ,  34  thereof abuts on the tapered receiving part  2   e,    12   e,    22   e  of the needle valve  2 ,  12 ,  22  in the stationary mode.   (21) The number of the components of the tip-stop mechanism in  FIGS. 1 and 2  is 4: spout  1 ; needle valve  2 ; “peripheral wall rear cover  3  plus leaf spring  3   b ”, and operation lever  4 .   (22) The number of the components of the tip-stop mechanism in  FIG. 3  is 5: spout  11 ; needle valve  12 ; peripheral wall rear cover  1 ; operation lever  14 ; and coil spring  15 .   (23) The number of the components of the tip-stop mechanism in  FIG. 4  is 2: “spout  21  plus operation lever  24 ”; “needle valve  22  plus peripheral wall rear cover  23  plus leaf spring  23 ”.   (24) The number of components of the tip-stop mechanism in  FIGS. 5 and 6  is 4: spout  31 ; needle valve  2 ; “peripheral wall rear cover  3  plus leaf spring  3   b ”, and operation button  34 .   
 
         [0105]    Any of the following components in total 12 is an integral molded product: spout  1 , needle valve  2 , “peripheral wall rear cover  3  plus leaf spring  3   b ”, operation lever  4  in  FIGS. 1 and 2 ; spout  11 , needle valve  12 , peripheral wall rear cover  13 , an operation lever  14  in  FIG. 3 ; “spout  21  plus operation lever  24 ”, “needle valve  22  plus peripheral wall rear cover  23  plus leaf spring  23  in  FIG. 4 ; spout  31 , needle valve  2 , “peripheral wall rear cover  3  plus leaf spring  3   b ”, and operation button  34  in  FIGS. 5 and 6 . 
       DETAILED DESCRIPTION OF THE INVENTION 
       [0106]    Preferred embodiments of the present invention will be described with reference to the accompanying drawings. 
       Embodiment 1 
       [0000]    
       
         An assembling procedure of the tip-stop mechanism illustrated in  FIGS. 1 and 2  is as follows, for example. 
         (31) The needle valve  2  is loaded to the longitudinal passage  1   f  of the spout  1  from the rear thereof. 
         (32) After the loading of the needle valve, a pair of the leg parts  3   a  of the peripheral wall rear cover  3  are put into a pair of the recessed parts  1   c  of the spout  1  from the backward and engaged therewith. 
         (33) A pair of the rotary shafts  4   a  of the operation lever  4  are immersed into a pair of the recessed parts  1   b  on the front side of the spout  1 . 
         (34) The spout  1  is fitted to the stem  5 . 
       
     
         [0112]    Upon the pair of the legs  3   a  of the peripheral wall rear cover  3  being inserted into the recessed part  1   c  of the spout  1 , the legs first abut along its tapered surface on the rear spout internal peripheral surface of the recessed part and go forward resisting own elastic force while displacing inwardly a little, respectively. Once the rear end of the tapered surface (=a transition part to the engaging step part) moves up to the recessed part  1   c,  the displacement part to the inside up to that time is restored elastically to permit the engaging step part of the leg parts  3   a  to be clamped by the recessed part  1   c.    
         [0113]    Also upon the pair of the rotary shafts  4   a  of the operation lever  4  being immersed into the front side recessed part  1   b  of the spout  1 , the rotary shafts are compressed a little abutting first on the spout peripheral surface and resisting own elastic force, and compressed parts up to that time are restored elastically and are held by the recessed part once they advance to the recessed part  1   b.    
         [0114]    The order of the foregoing works (31) to (34) is arbitrary under the restriction that the mounting work (32) of the peripheral wall rear cover  3  or the mounting work (33) of the operation lever  4  is performed after the finish of the loading work (31) of the needle valve  2   
         [0115]    In case of the tip-stop mechanism (stationary mode) after the assembling in  FIGS. 1 and 2 ,
       (41) the downward protruded part  2   d  of the needle valve  2  is guided to the single groove part  1   d  of the spout  1 ,       (42) the leg part  3   a  (engaging step part thereof) of the peripheral wall rear cover  3  is engaged and held by the recessed part  1   c  of the spout  1 ,   (43) the needle valve  2  abuts along the tapered face  2   c  on the tip end inner surface part of the leaf spring  3   b  of the peripheral wall rear cover  3  to be energized frontally by elastic force of the leaf spring,   (44) with the energization action the discharge hole  1   h  of the spout  1  is closed at the conical part  2   a  of the needle valve  2 , and   (45) the operation lever  4  permits its rotary shaft  4   a  to be held by the recessed part  1   b  of the spout and the tip end rear curved part of its piece part  4   b  to be made to abut on the receiving part  2   e  of the needle valve  2 .   
 
         [0121]    The operation lever  4  at this time is separated from the upper outer peripheral surface  1   g  of the spout  1  as illustrated in  FIG. 1(   a ), and also its piece part  4   b  simply rides the receiving part  2   e  of the needle valve  2 . 
         [0122]    Once a user presses downward the upper surface of the operation lever  4 , first the operation lever is turned clockwise in the figure around the rotary shaft  4   a,  permitting also the piece part  4   b,  part of the operation lever to be turned in the same direction. 
         [0123]    Following the turning of the piece  4   b  backward force acts on the receiving part  2   e  of the tapered face of the needle valve  2 , permitting the needle valve to move backward widening outward the pair of the leaf springs  3   b  with the tapered faces  2   c  against respective energizing forces of the springs. Owing to the backward motion of the needle valve  2  the conical part  2   a  thereof is separated from the discharge hole  1   h  of the spout  1  and the discharge hole changes from the closed state up to that time to an open state. 
         [0124]    The turning state of the operation lever  4  (fractional part  4   b ) carries on until the lower surface part of the operation lever makes contact with the upper outer peripheral surface  1   g  of the spout  1 . 
         [0125]    Once the operation lever  4  abuts on the spout  1  (upper outer peripheral surface  1   g ), both members move integrally downward together with the stem  5  resisting upward elastic force of the well known stem energizing coil spring (not shown) and change to the actuation mode. More specifically, with the downward movement of the stem  5  the known valve action part of the stem becomes an open state and a content accommodated in the container flows out to the outer space after passage through “open state valve action part—stem  5 —vertical passage  1   e  of the spout  1 —longitudinal passage  1   f —discharge hole  1   h”.    
         [0126]    Although following the turning of the fractional part  4   b  also downward force acts on the receiving part  2   e  of the tapered face of the needle valve  2 , energizing force of the leaf spring  3   b  to the needle valve  2  (tapered face  2   c ) is not strongly set as upward energizing force of the coil spring (not shown) to the stem  5  so that the spout  1  and the stem  5  do not first move downward although the needle valve  2  does not yet retire. 
         [0127]    As setting means of the actuation mode there may be used a well known mechanism, e.g., in case of the pump type product a mechanism that closes an upstream lower valve (suction valve) and opens a downstream side upper valve (discharge valve) and in case of the aerosol type product a mechanism that displaces the position of the stem hole part with respect to the stem gasket to make the hole part a communication state. The foregoing stem energizing coil spring is also well known. 
         [0128]    Once a user stops the pressing of the operation lever  4 , the entire of the stem  5 , spout  1 , and the entire of the operation lever (keeping its state abutting on the upper outer peripheral surface  1   g  of the spout) moves upward to a predetermined position owing to the action of the stem energizing coil spring (not shown) to close the valve action part of the stem. The discharge operation for a container content is thus finished. 
         [0129]    The predetermined position is a stationary mode position of the stem  5  which is uniquely defined depending on a relevant structure between a movable stem side and a fixed container side. 
         [0130]    Together with returning operation of the stem  5  to the stationary mode position, the needle valve  2  receives forward force via the tapered face  2   c  by restoring action of the leaf spring  3   b  of the peripheral wall rear cover  3  to the inside and moves in the same direction. As a result, the discharge hole  1   h  to the external space is closed by the conical part  2   a  of the needle valve to make the operation return to the stationary mode in  FIG. 1(   a ). 
       Embodiment 2 
       [0131]    Main differences between components in a tip-stop mechanism in  FIG. 3  and those in  FIGS. 1 and 2  are as follows:
   (51) A coil spring  15  is used instead of the leaf spring  3   b  in  FIGS. 1 and 2 .   (53) pair of grooves  1   d  are formed in a rear flat plane of the spout  11  for respectively guiding a lower protruded part  12   d  of a needle valve  12 .   (52) A sheath-shaped part  12   c  is formed at a rear end central part of the needle valve  12  for accommodating the coil spring  15 .   (54) A pair of the lower protruded parts  12   d  guided to a groove part  11   d  of a spout  11  and a pair of receiving parts  12   e  for response to the operation lever.   (55) A pair of fractional part  14   b  abutting on the receiving parts  12   e  of the needle valve  12  are formed on the operation lever  14 .   
 
         [0137]    The restriction of the assembling procedure of the tip-stop mechanism is that the needle valve  12  is loaded to the longitudinal passage  11  of the spout  11  and the coil spring  15  is inserted into a sheath-shaped part  12   c  of the needle valve  12  and then a leg part  13   a  of a peripheral wall rear cover  13  is mounted on a recessed part  11   c  of the spout  11 . 
         [0138]    Relevant structures among components such as the spout  11 , needle valve  12 , peripheral wall rear cover  13 , operation lever  14 , and stem (not shown) for example, movement modes of the spout  11 , needle valve  12 , and operation lever  14  accompanying the changeover operation between the stationary mode and the actuation mode, relationships between the strength of the coil spring  15  used instead of the leaf spring  3   b  and the strength of the upward energizing coil spring (not shown) of the stem or the like excepting the above constitution are the same as in the case of the tip-stop mechanism in  FIGS. 1 and 2 . 
       Embodiment 3 
       [0139]    Main differences between components in a tip-stop mechanism in  FIG. 4  and those in  FIGS. 1 and 2  are as follows:
   (61) A spout  21  and an operation lever  24  are integrally molded, and both members are connected by a hinge-shaped part  24   a  that is a turning base part of the operation lever  24 .   (62) A needle valve  22  and a peripheral wall rear cover  23  are integrally molded via a pair of U-shaped leaf springs  23   b.  The needle valve  22  is movable frontally against the rear energizing force of the U-shaped leaf spring  23   b  in response to the turning operation of the operation lever  24  (setting operation of the actuation mode).   (63) The operation lever  24  includes a pair of protruded fractional parts  24   c,    24   d  (tapered face plus engaging step) formed thereon and the spout  21  includes correspondingly a pair of guide recessed parts  21   j,    21   k.  In the state of the tip-stop mechanism after assembled, the protruded fractional parts  24   c,    24   d  are held by the guide recessed parts  21   j,    21   k.  In the holding state after assembled, the protruded fractional parts  24   c,    24   d  are movable (turnable) in the guide recessed parts  21   j,    21   k,  e.g., in the stationary mode the engaging step of the protruded fractional part is engaged with an inner surface part of the guide recessed part   
 
         [0143]    The restriction in the assembling procedure of the tip-stop mechanism is that after a leg part  23   a  of the peripheral wall rear cover  23  is fitted in a recessed part  21   c  of the spout  21 , the operation lever  24  in the illustrated state is turned clockwise to permit protruded fractional parts  24   c,    24   d  thereof to enter guide recessed parts  21   j,    21   k  of the spout  21 . 
         [0144]    In the process where the protruded fractional parts  24   c,    24   d  of the operation lever  24  are made to enter the guide recessed parts  21   j,    21   k,  tapered faces of the protruded fractional parts  24   c,    24   d  are once deformed and then restored to an original state as in the case of the pair of the legs  3   a  ( 13   a,    23   a ) of the peripheral wall rear cover where they are mounted to the spout. 
         [0145]    More specifically, the tapered faces of the protruded fractional parts  24   c,    24   d  first abut on a spout internal peripheral surface part where the guide recessed parts  21   j,    21   k  have not been formed and are deformed to the inside. The tapered faces are restored elastically to original shapes by entering the guide recessed parts  21   j,    21   k  as a whole. 
         [0146]    Relevant structures among the components such as the spout  21 , needle valve  22 , peripheral wall rear cover  23 , operation lever  24 , stem (not shown) or the like; moving modes among the spout  21 , needle valve  22 , and operation lever  24  accompanying changeover operation between the stationary mode and the actuation mode; a relationship between the strength of the U-shaped leaf spring  23   b  and the upward energizing coil spring of the stem (not shown); and so on, excepting the aforementioned structure are the same as in the case of the tip-stop mechanism in  FIGS. 1 and 2 . 
       Embodiment 4 
       [0147]    Main differences between components in a tip-stop mechanism in  FIGS. 5 and 6  and those in  FIGS. 1 and 2  are as follows:
   (71) As the operation member for actuation mode setting there is used a vertical movement type operation button  34  that includes a pair of hung leaf springs  34   a  and a pair of fractional parts to be guided (tapered face plus engaging step)  34   c,    34   d.      (72) An upper outer peripheral surface  31   g  of a spout  31  is made a curved shape; upon pressing-down operation of the operation button  34  a pair of leaf springs  34  are displaced to the outside along the curved surface resisting own elastic force; and guide recessed parts  31   j,    31   k  are formed for individually guiding fractional parts (tapered face and engaging step part)  34   c,    34   d  of an operation button  43  upon vertical movement of the same.   (73) The operation button  34  and the spout  31  are united integrally by pushing the operation button  34  into an open region  31   a  of the spout  31  from an upper portion thereof.   
 
         [0151]    Fractional parts (tapered face plus engaging step part)  34   c,    34   d  of the operation button are restored to an original state by permitting them to be once deformed to the inside upon pushing-in operation and to enter the guide recessed parts  31   j,    31   k  of the spout  31 . 
         [0152]    More specifically, the fractional parts  34   c,    34   d,  that are being pushed in from a peripheral surface part of the guide recessed parts  31   j,    31   k  of the spout  31  located just thereabove are first deformed inside as a whole by permitting tapered faces thereof to abut on (against some own elastic force because of its being made of synthetic resin) the peripheral surface, and are then elastically restored to an original state by permitting them to enter the guide recessed part. In this restored state, the fractional parts  34   c,    34   d  are engaged with the guide recessed parts  31   j,    31   k.    
         [0153]    In the operation button  34  assembled finally, the pair of the leaf springs abut on the upper outer peripheral surface  31   g  of the spout  31  such that they are displaced outside a little, and a single fractional part  34   b  for driving needle valve abuts on the receiving part  2   e  of the needle valve  2 . The pair of the leaf springs  34   a  are formed symmetrically with respect to a central line that passes through a fractional part  34   b  of the top surface of the operation button  34 . 
         [0154]    The operation button  34  is supported by the spout  31  with good balance at the pair of the leaf springs  34   a  and at a single fractional part  34   b  and is positioned peripherally of the spout  31  at the fractional parts  34   c,    34   d.  The pair of the leaf springs  34   a  are slightly displaced outside so that the operation button  3  is energized upward with elastic force of the leaf spring  34   a  to prevent unnecessary backlash. 
         [0155]    It is noticed that as the operation button  34  is pressed, the fractional parts  34   c,    34   d  are moved downward, guided to the guide recessed parts  31   j,    31   k  of the spout  31 . 
         [0156]    Following the downward movement of the operation button, in the same manner as in the case of the operation levers in  FIGS. 1 to 4 ,
   (81) By first permitting the single fractional part  34   b  of the operation button to act on the receiving part  2   e  of the needle valve  2  until the top surface of the operation button  34  abuts on the upper outer peripheral surface  31   g  of the spout  31  (at this time, the leaf spring  34   a  is deformed outside along the upper outer peripheral surface), the needle valve is driven backward in the form of resisting own elastic force of the leaf spring  3   b  to release a closed state of the discharge hole  31   h  up to that time by the conical part  2   a;      (82) After the top surface abuts on the upper outer peripheral surface  31   g  (refer to  FIG. 5(   b )), the spout  31  united integrally with the operation button  34  moves downward to open the well known stem valve mechanism (not shown);   (83) As a result, a content accommodated in the container is discharged to the external space after passage through “stem  5 —vertical passage  31   g  of the spout  31 —the longitudinal passage  31   f  of the spout  31 —discharge hole  31   h.  That is, the operation is set to the actuation mode.   
 
         [0160]    Elastic force of the pair of the leaf spring  34   a  deformed outside along the upper outer peripheral surface  31   g  of the spout  31  in pressing-down operation of the operation button  34  is set enough smaller than that of a well known coil spring (not shown) for stem energization as in the leaf spring  3   b  for needle valve energization. 
         [0161]    When the user releases the pressing (actuation mode) of the operation button  34 ,
   (91) the spout  31  is restored to the stationary mode position by the action of the coil spring (at this time, the operation button  34  keeps substantially abutting on the upper outer peripheral surface  31   g  of the spout i.e. the needle valve  2  goes back for the discharge hole  31   h  to keep being open).   (92) Then, the needle valve  2  is restored frontally by elastic force to the tapered face  2   c  of the pair of the leaf spring  3   b.  Following this, the operation button  34  returns upwardly vertically by forces acting on two positions: the elastic force of the pair of the leaf spring  34   a  and force acting on the fractional part  34   b  by the receiving part  2   e  of the needle valve  2 , and changes to the stationary mode.   
 
         [0164]    The restriction in the assembling procedure of the tip-stop mechanism in  FIGS. 5 and 6  is that the needle valve  22  is loaded to the longitudinal passage  31   f  of the spout  3  and then the operation button  34  and the peripheral wall rear cover  3  is mounted on the spout. 
         [0165]    Relevant structures among components of the spout  31 , needle valve  2 , peripheral wall rear cover  3 , and stem (not shown), and moving modes between the spout  31  and the needle valve  12  accompanying the changeover operation between the stationary mode and the actuation mode for example, excepting the aforementioned structure are the same as in the tip-stop mechanism in  FIGS. 1 and 2 . 
         [0166]    There may be used a tip-stop mechanism in the mode where the spout  21  and the operation lever  24  in  FIG. 4  are replaced with the spout  1  and the operation lever  4  in  FIGS. 1 and 2  and a tip-stop mechanism in the mode where the needle valve  22  and the peripheral wall rear cover  23  in  FIG. 4  are replaced with the needle valve  2  and the peripheral wall rear cover  3 . 
         [0167]    There may be used a method of integral molding between the spout  21  and the operation lever  24  as integration between the spout  1  and the operation lever  4  in the tip-stop mechanism in  FIGS. 1 and 2  and as integration means between the spout  11  and the operation lever  14  in the tip-stop mechanism in  FIG. 3 . 
         [0168]    Further, instead of the fractional part  34   b  (for driving the needle valve), needle valve  2 , and peripheral wall rear cover  3 , the corresponding components in  FIGS. 3 and 4  may be properly employed or in combination thereof. 
       Embodiment 5 
       [0169]    Aerosol type products and pump type products to which the present invention is applicable include various applications such as cleansing agents, cleaning agents, antiperspirants, coolants, muscle antiphlogistic agents, hair styling agents, hair treatment agents, hair washing agents, hair restorers, cosmetics, shaving foams, foods, droplet like products (such as vitamin), medical goods, quasi drugs, coating materials, gardening agents, repellant agents (insecticides), cleaners, deodorants, laundry starch, urethane foams, extinguishers, adhesives, lubricant agents or the like. 
         [0170]    Contents accommodated in the container body include powdery products, oil components, alcohols, surfactants, high polymers, and effective components associated with various applications. 
         [0171]    Powdery products includes metal salts powder, inorganic powder, and resin powder or the like, e.g. talc, kaolin, aluminum hydroxychloride (aluminum salt), calcium arginate, powdered gold, silver powder, mica, carbonate, barium sulphate, cellulose, and mixtures of them. 
         [0172]    Oil components include silicone oil, palm oil, eucalyptus oil, camellia oil, olive oil, jojoba oil, paraffin oil, myristic acid, palmitic acid, stearic acid, linoleic acid, linolenic acid or the like. 
         [0173]    Alcohols include monovalent lower alcohol such as ethanol, monovalent higher alcohol such as lauryl alcohol, and multivalent alcohol such as ethylene grycol or the like. 
         [0174]    Surfactants include anionic surfactant such as sodium laurylsulphate, non-ionic surfactant such as polyoxiethylene oleyl ether, amphoteric surfactant such as lauryl dimethyl amino acetic acid betaine, and cationic surfactant such as alkylchloride trimethylammonium or the like. 
         [0175]    Polymer molecule compounds include methylcellulose, gelatine, starch, and casein or the like. 
         [0176]    Effective components associated with respective applications include antiphlogistics/analgesics such as methyl salicylate and indometacin, bactelia elimination agents such as sodium benzoate and cresol, harmful insect extermination agents such as pyrethroid, diethyltoluamide, anhidrotics such as zinc oxide, algefacient such as camphor and peppermint camphor, antiasthmatic agents such as ephedrine and adrenaline, edulcorant such as sucralose and aspartame, adhesive and paint such as epoxy resin and urethane, dyes such as paraphenylenediamine and aminophenol, and extinguishant such as ammonium dihydrogenphosphate and sodium/potassium acid carbonate or the like. 
         [0177]    Further, there are usable suspensions, UV absorbers, emulsifiers, humectants, antioxidants, and metal ion blocking agents, etc. 
         [0178]    Content discharge gas in the aerosol type product includes carbon dioxide, nitrogen gas, compressed air, oxygen gas, lean gas, compressed gas of mixed gas etc. of the former gases, liquefied petroleum gas, and liquefied gas of dimethyl ether and fluorocarbon etc.