Patent Publication Number: US-2023163532-A1

Title: Shield terminal and connector

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is based on and claims priority from Japanese Patent Application No. 2021-190344, filed on Nov. 24, 2021, with the Japan Patent Office, the disclosure of which is incorporated herein in its entirety by reference. 
     TECHNICAL FIELD 
     The present invention relates to a shield terminal and a connector. 
     BACKGROUND 
     JP 2013-222684A and JP H5-059773U disclose a shield terminal that includes an outer conductor. The outer conductor includes a main body portion, and a barrel portion that is connected to a shield portion of an electric wire, on the rear side relative to the main body portion. 
     Note that the outer conductor is referred to as an “outer conductor” in JP 2013-222684A, and a “connecter outer shell portion” in JP H5-059773U. The shield terminal is referred to as an “L-shaped coaxial connector” in JP 2013-222684A, and a “female connector” in JP H5-059773U. The main body portion is referred to as a “tubular portion” in JP 2013-222684A, and a “tubular coupling portion” in JP H5-059773U. The barrel portion is referred to as a “shield wire crimping portion” in JP 2013-222684A, and a “crimp portion” in JP H5-059773U. 
     SUMMARY 
     The outer conductor is usually a single member obtained by integrating a barrel portion and a main body portion. In contrast, in order to increase, for example, the degree of freedom of the structures of the barrel portion and the main body portion, it is possible to separately configure a first outer conductor on the barrel portion side and a second outer conductor on the main body portion side. 
     However, when the outer conductor is separated into the first outer conductor and the second outer conductor, and an electric wire connected to the barrel portion of the first outer conductor is pulled rearward in a state where the shield terminal is engaged in a housing, there is a concern that the first outer conductor will be displaced relative to the second outer conductor. 
     In view of this, an object of the present disclosure is to provide a shield terminal and a connector that can prevent displacement of a first outer conductor and a second outer conductor from each other. 
     A shield terminal according to the present disclosure includes: a first outer conductor and a second outer conductor that are to be attached to each other, the first outer conductor includes a barrel portion that is connected to a shield portion of an electric wire, and an engaging portion capable of engaging with a housing, the second outer conductor includes a main body portion and an extension portion that extends rearward from the main body portion, a rear end portion of the extension portion is held sandwiched between the barrel portion and the electric wire, a fastener portion is formed on a front side of the second outer conductor relative to the rear end portion of the extension portion, and a fastening portion capable of coming into contact with the fastener portion in a direction of rotation about the engaging portion is formed forward of the engaging portion of the first outer conductor. 
     According to the present disclosure, it is possible to provide a shield terminal that can prevent displacement of a first outer conductor and a second outer conductor. 
     The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a cross-sectional view showing a state where a shield terminal is accommodated in a housing, in a first embodiment of the present disclosure. 
         FIG.  2    is a side view of the shield terminal. 
         FIG.  3    is a perspective view of a first outer conductor. 
         FIG.  4    is a perspective view of a second outer conductor in an open state. 
         FIG.  5    is a plan view of a front end side of the shield terminal. 
     
    
    
     DETAILED DESCRIPTION 
     In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. 
     First, embodiments of the present disclosure will be listed and described. 
     (1) A shield terminal according to the present disclosure includes: a first outer conductor and a second outer conductor that are to be attached to each other, the first outer conductor includes a barrel portion that is connected to a shield portion of an electric wire, and an engaging portion capable of engaging with a housing, the second outer conductor includes a main body portion and an extension portion that extends rearward from the main body portion, a rear end portion of the extension portion is held sandwiched between the barrel portion and the electric wire, a fastener portion is formed on a front side of the second outer conductor relative to the rear end portion of the extension portion, and a fastening portion capable of coming into contact with the fastener portion in a direction of rotation about the engaging portion is formed forward of the engaging portion of the first outer conductor. 
     When the electric wire is pulled rearward in a state where the shield terminal is accommodated in the housing and the engaging portion is engaged with the housing, there is a concern that the first outer conductor will be displaced relative to the second outer conductor in a direction of rotation (inclination) about the engaging portion engaged with the housing. However, with the above configuration, the fastening portion of the first outer conductor can come into contact with the fastener portion of the second outer conductor in a direction of rotation about the engaging portion, and thus it is possible to prevent displacement of the second outer conductor relative to the first outer conductor. 
     (2) Preferably, the main body portion intersects the extension portion and extends in an up-down direction, and has a shape that enables insertion into the housing, and the engaging portion opposes the main body portion, rearward of the main body portion, in a state where the first outer conductor and the second outer conductor are attached to each other. 
     In addition, preferably, in a connector that includes the above shield terminal and the housing, the housing includes an engagement portion to be engaged with the engaging portion, and an insertion portion into which the main body portion is inserted, forward of the engagement portion, and the insertion portion and the engagement portion are aligned with each other in a front-rear direction. 
     According to the above configuration, when the electric wire is pulled rearward in a state where the shield terminal is accommodated in the housing, a force resulting from the pulling can be taken on by a portion of engagement between the engagement portion and the engaging portion. Accordingly, recession of the main body portion is restrained, and it is possible to avoid a situation where the main body portion interferes with the inner surface (rear surface) of the insertion portion of the housing and is deformed. 
     (3) Preferably, the first outer conductor includes a base portion that extends forward from the barrel portion, and a pair of rising portions that rise from right and left end portions of the base portion, the engaging portion has a shape obtained by folding a portion of the base portion, the fastening portion is formed at a leading end portion in a rising direction of each of the rising portions, and the rising portions are formed in a plate shape that overlaps an outer surface of the second outer conductor so as to close a gap in the second outer conductor. 
     According to the above configuration, it is also possible to increase the degree of freedom with which the engaging portion can be formed. In addition, the fastening portion can be easily formed without performing a special process on the leading end portion in the rising direction of the rising portion. Furthermore, as a result of the rising portion closing a gap in the second outer conductor, it is possible to prevent leakage and intrusion of noise. 
     Detailed Embodiments of Present Disclosure 
     Specific examples of the present disclosure will be described below with reference to the drawings. Note that the present invention is not limited to illustrations of these, but is indicated by the claims, and all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein. 
     First Embodiment 
     As shown in  FIG.  1   , a connector  10  according to a first embodiment of the present disclosure includes a housing  20  and a shield terminal  30 . The shield terminal  30  is accommodated in the housing  20  in a state of being attached to a terminal portion of an electric wire  90 . Note that, in the following description, the front-rear direction corresponds to the longitudinal direction of the electric wire  90 , and the side on which the electric wire  90  is routed when viewed from the shield terminal  30  is defined as a rear side. In the up-down direction, the side on which the shield terminal  30  is attached to the housing  20  is defined as the upper side. This up-down direction is not in reference to a positional relation or a direction when the connector  10  is actually mounted in a device such as an automobile. “F”, “R”, “U”, and “D” in the drawings respectively indicate “front side”, “rear side”, “upper side”, and “lower side. 
     Housing 
     The housing  20  is made of a synthetic resin, and includes an accommodation groove  21  extending in the front-rear direction, and an insertion portion  22  extending downward from the front end portion of the accommodation groove  21 , as shown in  FIG.  1   . The accommodation groove  21  is open upward along the entire length thereof in the front-rear direction. A covering member  23  such as a cover or another housing is mounted to the housing  20  from above in order to close the upper surface of the accommodation groove  21 . 
     A recessed engagement portion  24  is formed in the lower surface of the accommodation groove  21  of the housing  20 . The engagement portion  24  is disposed at a position close to the front end portion of the accommodation groove  21 , near the rear side of the insertion portion  22 . 
     Electric Wire 
     As shown in  FIG.  1   , the electric wire  90  is a shield wire (coaxial electric wire), and includes a core wire  91 , an insulation coating  92 , a shield portion  93 , and a sheath  94  in order from the central axis to the outer circumference thereof. At the front end portion of the electric wire  90 , the sheath  94  and the insulation coating  92  are removed, and the core wire  91  and the shield portion  93  are sequentially exposed. The shield portion  93  is a braided wire or the like, and is connected to an earth portion (not illustrated). 
     Shield Terminal 
     As shown in  FIG.  1   , the shield terminal  30  includes an inner conductor  31 , outer conductors  32  and  33  that surround the outer periphery of the inner conductor  31 , and a dielectric body  34  that is disposed between the inner conductor  31  and the outer conductors  32  and  33 . The inner conductor  31 , the outer conductors  32  and  33 , and the dielectric body  34  are all L-shaped in a side view, and correspond to the entire shape of the shield terminal  30 . The outer conductors  32  and  33  and the inner conductor  31  are made of a conductive metal, and the dielectric body  34  is made of a synthetic resin. The dielectric body  34  electrically insulates the inner conductor  31  and the outer conductors  32  and  33  from each other. A rear end portion of the portion of the inner conductor  31  that extends in the front-rear direction is crimped and electrically connected to the core wire  91  of the electric wire  90 , and a lower end portion of the portion of the inner conductor  31  that extends in the up-down direction is electrically connected to a partner inner conductor of a partner terminal (not illustrated). 
     As shown in  FIG.  2   , the outer conductors  32  and  33  form an outer shell of the shield terminal  30 , and are composed of a first outer conductor  32  and a second outer conductor  33  that are attached and connected to each other. 
     The first outer conductor  32  is formed by performing a bending process or the like on a metal plate. The first outer conductor  32  includes a barrel portion  35  and a base portion  36  that extends forward from the barrel portion  35 . As shown in  FIGS.  2  and  3   , the barrel portion  35  includes a bottom portion  37  that extends in the front-rear direction. The bottom portion  37  and the base portion  36  are provided continuous to each other in the front-rear direction. The barrel portion  35  includes a right-and-left pair of front barrel pieces  38  (only one front barrel piece  38  is illustrated in  FIGS.  2  and  3   ) that rise from a front end portion of the bottom portion  37 , a right-and-left pair of intermediate barrel pieces  39  (only one intermediate barrel piece  39  is illustrated in  FIGS.  2  and  3   ) that rise from a front-rear intermediate portion of the bottom portion  37 , and a right-and-left pair of rear barrel pieces  41  (only one rear barrel piece is illustrated in  FIGS.  2  and  3   ) that rise from a rear end portion of the bottom portion  37 . 
     The barrel portion  35  is crimped and connected to the electric wire  90 , and is bent into a shape having a circular cross-section or a cross-section close to a circular cross-section as a whole while curving the bottom portion  37 . The diameters of a portion of the barrel portion  35  corresponding to the intermediate barrel pieces  39  is smaller than the diameters of portions corresponding to the front barrel pieces  38  and the rear barrel pieces  41 . 
     The base portion  36  includes a plate-like portion  42  that is flat in the front-rear direction and the right-left direction, at a position lower than the bottom portion  37 . In a central portion of the plate-like portion  42 , an engaging portion  43  is formed by folding the plate-like portion  42 . Specifically, a notch having a square U-shape is formed in a central portion of the plate-like portion  42 , a plate piece portion of the notch is folded downward from the front end thereof, whereby the engaging portion  43  is formed. The engaging portion  43  is formed in a rectangular shape, and is disposed along the up-down direction with the plate surfaces thereof being directed forward and rearward. A reinforcement portion  44  having a triangular pyramid shape is provided at a root portion of the engaging portion  43 . The reinforcement portion  44  is shaped by pushing a portion that extends from a root portion of the engaging portion  43  to a front end side of the plate-like portion  42  so as to expand forward. 
     The first outer conductor  32  includes a pair of rising portions  45  that rise from right and left end portions of the base portion  36 . The rising portions  45  are each formed in a plate shape extending along the up-down direction. Rear ends of the rising portions  45  are respectively coupled to the front barrel pieces  38 . 
     On the front end side of each of the rising portions  45 , a rising main body portion  46  that is rectangular in a side view is formed to be raised to be higher than the rising portions  45 . An upper end of the rising main body portion  46  serves as a fastening portion  47  that can come into contact with a fastener portion  61  of the second outer conductor  33 , which will be described later. The fastening portion  47  of the rising main body portion  46  is disposed along the front-rear direction. 
     The second outer conductor  33  is formed by performing a bending process or the like on a metal plate. As shown in  FIGS.  2  and  4   , the second outer conductor  33  includes a cylindrical main body portion  48  and an extension portion  49  shaped as a plate piece. The extension portion  49  includes a lower extension portion  51  that is continuous to the main body portion  48  at a right angle, and an upper extension portion  53  that is continuous to the main body portion  48  via hinges  52  in an openable and closable manner to an open state (state shown in  FIG.  4   ) and a closed state (state shown in  FIGS.  1 ,  2 , and  5   ). In the open state, the extension portion  49  rises from the main body portion  48 , and an upper surface opening of the main body portion  48  is open. In the closed state, the extension portion  49  is disposed in the front-rear direction, and the upper surface opening of the main body portion  48  is closed by an extension base end portion  59 , which will be described later. 
     The main body portion  48  is electrically connected to a partner outer conductor of a partner terminal (not illustrated) while being inserted into the insertion portion  22  of the housing  20 . An elastic contact portion  54  (see  FIG.  2   ) that can come into contact with the partner outer conductor and that is disposed in the main body portion  48  is formed on the lower end side of the main body portion  48 . The main body portion  48  includes an opposing surface  65  that is directed rearward so as to oppose the engaging portion  43 . 
     As shown in  FIG.  4   , on the upper end side of the main body portion  48 , a right-and-left pair of engaging pieces  55  that are shaped as a plate piece are formed, and an open portion  56  that is open rearward is formed between rear ends of the engaging pieces  55 . The lower extension portion  51  shaped as a plate piece that extends rearward from a lower end of the open portion  56  of the main body portion  48 . A rear end portion of the lower extension portion  51  is formed to have a width that is smaller than that of the front end portion of the lower extension portion  51 . The upper extension portion  53  includes a plate-piece shaped main extension portion  57  that is continuous to an upper end front portion of the main body portion  48  via the hinges  52 , and a pair of sub extension portions  58  that are bent from right and left end portions of the main extension portion  57  at a right angle. 
     As shown in  FIG.  2   , the main extension portion  57  extends in the front-rear direction in the closed state. The extension base end portion  59  that closes the upper surface opening of the main body portion  48  in the closed state is formed at a position of the main extension portion  57  close to the hinges  52 . In the closed state, the extension base end portion  59  is positioned on the front side of the sub extension portions  58 , and is disposed along the front-rear direction and the right-left direction. As shown in  FIGS.  4  and  5   , a right-and-left pair of fastener portions  61  that protrude laterally are formed on the extension base end portion  59 . The fastener portions  61  have a rectangular shape, and protrude above the open portion  56  and on the lateral sides relative to the outer periphery of the main body portion  48 , in the closed state. The lateral protruding length of the fastener portions  61  is the same as the thickness of the rising main body portions  46 , which is the same as the width of the fastening portions  47 , or larger than the thickness of the rising main body portions  46 . 
     The sub extension portions  58  include a pair of coupling end portions  62  that protrude downward from right and left end portions of the main extension portion  57  in the closed state, and a pair of divided portions  63  that extend rearward from the coupling end portions  62 . In the closed state, a rear end portion of the main extension portion  57 , a rear end portion of the lower extension portion  51 , and the divided portions  63  from a circular shape or a shape close to a circular shape as a whole in a rear view, and are disposed along the outer periphery of the shield portion  93  of the electric wire  90 . As shown in  FIG.  2   , in a state where the first outer conductor  32  and the second outer conductor  33  are attached to each other, the rear end portion of the lower extension portion  51  is covered by the bottom portion  37  of the first outer conductor  32 , and rear end portions of the main extension portion  57  and the divided portions  63  are covered by the front barrel pieces  38  of the first outer conductor  32 . As a result of the main extension portion  57 , the lower extension portion  51 , and the divided portions  63  being covered by and held by the barrel portion  35  in this manner, the attached state of the first outer conductor  32  and the second outer conductor  33  is maintained. 
     Method and Structure for Attaching Shield Terminal 
     The second outer conductor  33  is brought into the open state (state shown in  FIG.  4   ), and the dielectric body  34  is inserted into the main body portion  48  from above. The inner conductor  31  connected to the core wire  91  of the electric wire  90  is accommodated in the dielectric body  34  in advance. Understandably, a configuration may also be adopted in which, if the dielectric body  34  has a lid portion  64  (see  FIG.  1   ), the dielectric body  34  is inserted into the main body portion  48 , and then the inner conductor  31  is inserted into the dielectric body  34 , and the lid portion  64  is closed. 
     Next, the second outer conductor  33  is brought into the closed state. In the closed state, as shown in  FIG.  1   , the main extension portion  57  of the second outer conductor  33  is disposed so as to be capable of coming into contact with the upper surface of the dielectric body  34 . In addition, in the closed state, as shown in  FIG.  2   , a gap G 1  extending along the up-down direction is formed between a rear end of each engaging piece  55  and a front end of the coupling end portion  62 , and a gap G 2  extending along the front-rear direction is formed between each sub extension portion  58  and the lower extension portion  51 . 
     Next, the first outer conductor  32  is attached to the second outer conductor  33  from below. The bottom portion  37  and the base portion  36  of the first outer conductor  32  are disposed along the lower surface of the lower extension portion  51  of the second outer conductor  33 . In this state, crimping tools (an anvil and a crimper) are applied to the barrel portion  35 , and a crimping process is performed. The front barrel pieces  38 , the intermediate barrel pieces  39 , and the rear barrel pieces  41  are bent, and crimped and connected to the terminal portion of the electric wire  90 . Specifically, the front barrel pieces  38  sandwich a rear end portion of the extension portion  49  therebetween, and are electrically connected to the shield portion  93  of the electric wire  90 . The intermediate barrel pieces  39  are directly crimped and electrically connected to the shield portion  93  of the electric wire  90 . The rear barrel pieces  41  are mechanically connected to the sheath  94  of the electric wire  90 . Note that, in the first embodiment, crimping processes of the front barrel pieces  38 , the intermediate barrel pieces  39 , and the rear barrel pieces  41  may be performed at the same time or may be performed separately at time intervals. 
     In a state where the first outer conductor  32  and the second outer conductor  33  are attached to each other, the rising portions  45  of the first outer conductor  32  overlap the outer surface side of the extension portion  49 , as shown in  FIG.  2   , and close the gaps G 1  and G 2  formed in the second outer conductor  33 . 
     Moreover, as shown in  FIGS.  2  and  5   , the fastener portions  61  of the second outer conductor  33  oppose the fastening portions  47  of the rising main body portions  46  so as to come into contact with the fastening portions  47  in the front-rear direction. As shown in  FIG.  2   , the engaging portion  43  is disposed rearward of the main body portion  48  and opposes the main body portion  48  with a space therebetween. 
     Structure for Accommodating Shield Terminal in Housing 
     When the shield terminal  30  is accommodated in the housing  20 , the main body portion  48  is inserted and fitted into the insertion portion  22  of the housing  20 , and the plate-like portion  42  of the first outer conductor  32  is disposed along the lower surface of the accommodation groove  21  of the housing  20 , as shown in  FIG.  1   . The engaging portion  43  protrudes downward from the plate-like portion  42  of the first outer conductor  32 , and thus, as a result of the shield terminal  30  being lowered in an attachment process, the engaging portion  43  can enter the engagement portion  24  of the housing  20 . Once the engaging portion  43  has entered the engagement portion  24 , the rear surface of the engaging portion  43  (a surface on the rear side of the engaging portion  43 ) opposes the inner surface of the engagement portion  24  so as to come into contact with the inner surface of the engagement portion  24  in the up-down direction. 
     When a force F (see  FIG.  1   ) of pulling out the shield terminal  30  rearward acts due to, for example, the electric wire  90  being pulled rearward in a state where the shield terminal  30  is accommodated in the housing  20 , the rear surface of the engaging portion  43  comes into firm contact with the inner surface of the engagement portion  24 , and takes on the force F. Accordingly, recession of the shield terminal  30  is restrained. In addition, recession of the main body portion  48  is also restrained, and thus it is possible to avoid a situation where the opposing surface  65  of the main body portion  48  is pressed against the inner surface of the insertion portion  22  of the housing  20  and is deformed. The reinforcement portion  44  is formed on the engaging portion  43 , and thus, even if the rear surface of the engaging portion  43  comes into firm contact with the inner surface of the engagement portion  24 , it is possible to avoid a situation where the engaging portion  43  is subjected to plastic deformation. 
     Incidentally, when the force F acts on the first outer conductor  32 , there is a concern that the first outer conductor  32  will be inclined in a direction (upward direction UR, see  FIGS.  1  and  2   ) of rotation about a portion where the engaging portion  43  and the engagement portion  24  are engaged with each other (a portion where the rear surface of the engaging portion  43  comes into contact with the inner surface of the engagement portion  24 ), and the first outer conductor  32  will be displaced relative to the second outer conductor  33  in the upward direction UR. However, in the first embodiment, the fastener portions  61  of the first outer conductor  32  come into contact with the fastening portions  47  of the second outer conductor  33  in the displacement direction, namely, the upward direction UR, and thus it is possible to prevent displacement of the first outer conductor  32  relative to the second outer conductor  33  in the upward direction UR. As a result, it is possible to maintain a state where the first outer conductor  32  and the second outer conductor  33  are properly attached to each other. 
     As described above, according to the first embodiment, the following effects can be exerted. 
     The engaging portion  43  is formed so as to protrude downward from the lower surface of the base portion  36  of the first outer conductor  32 , and thus it is possible to avoid an increase in the size of the shield terminal  30  in the width direction. In addition, in the housing  20 , the engagement portion  24  that receives the engaging portion  43  is formed in the lower surface of the accommodation groove  21 , and falls within the width of the accommodation groove  21 . Therefore, it is also possible to avoid an increase in the size of the connector  10  in the width direction. 
     Moreover, the engaging portion  43  is formed by cutting and raising a portion of the base portion  36  positioned between the barrel portion  35  and the main body portion  48 , and thus it is easy to ensure positional accuracy and dimensional accuracy of the engaging portion  43 , and, furthermore, it is also possible to increase the degree of freedom with which the engaging portion  43  can be formed. 
     Moreover, both the main body portion  48  and the engaging portion  43  are formed so as to extend in the up-down direction, and the opposing surface  65  of the main body portion  48  opposes the engaging portion  43 , and thus the engaging portion  43  does not protrude independently below the shield terminal  30 . Therefore, the size of the shield terminal  30  in the up-down direction does not increase due to the presence of the engaging portion  43 . In addition, the rib-shaped reinforcement portion  44  is formed at the root portion of the engaging portion  43  on the front surface side of the engaging portion  43 , and thus it is possible to avoid a situation where the engaging portion  43  is subjected to plastic deformation. 
     Furthermore, according to the first embodiment, the following effects can be exerted. 
     When, due to, for example, the electric wire  90  being pulled rearward, the first outer conductor  32  is about to become displaced relative to the second outer conductor  33  about the upward direction UR with respect to the portion where the engaging portion  43  and the engagement portion  24  are engaged with each other, the fastening portions  47  of the rising main body portions  46  of the first outer conductor  32  can come into contact with the fastener portions  61  of the second outer conductor  33 , and thus it is possible to prevent displacement of the second outer conductor  33  relative to the first outer conductor  32 . 
     Moreover, when the electric wire  90  is pulled rearward, the force F resulting from the pulling can be taken on by the portion of engagement between the engagement portion  24  and the engaging portion  43 . Accordingly, recession of the main body portion  48  is restrained, and it is possible to avoid a situation where the main body portion  48  interferes with the inner surface of the insertion portion  22  of the housing  20 , and is deformed. 
     Moreover, the fastening portions  47  are formed on the upper ends of the rising main body portions  46 , and thus there is no need to perform a special process for forming the fastening portions  47  on the first outer conductor  32 . In addition, as a result of the rising portions  45  closing a gap in the first outer conductor  32 , it is possible to prevent leakage and intrusion of noise. 
     OTHER EMBODIMENTS OF PRESENT DISCLOSURE 
     The first embodiment disclosed here is to be construed as illustrative and not limiting in all respects. 
     In the first embodiment, the engaging portion is formed at the base portion of the first outer conductor. However, in other embodiments, the engaging portion may also be formed in a portion of the first outer conductor other than the base portion, such as the barrel portion, as long as the engaging portion is shaped so as not to protrude outward in the width direction of the first outer conductor. 
     In the first embodiment, the engaging portion is formed by cutting and raising a portion of the base portion. However, in other embodiments, the engaging portion may be formed by folding a protruding portion of the base portion. 
     In the first embodiment, the main body portion is formed so as to extend in the up-down direction. However, in another embodiment, the main body portion may also be formed so as to extend in the front-rear direction continuous to the extension portion, the base portion, the bottom portion, and the like. 
     In the first embodiment, the outer conductor is constituted by the first outer conductor and the second outer conductor that are formed separately. However, in another embodiment, the outer conductor may also be a single member in which all of the constituent elements are integrated. 
     From the foregoing, it will be appreciated that various exemplary embodiments of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various exemplary embodiments disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.