JP2021128911A - Connector and seal member for connector - Google Patents

Abstract

To provide a connector and a seal member for the connector provided with a new sealing member that can easily confirm the position of a locking portion of the sealing member.SOLUTION: A connector 10 includes a connector housing 60 and an annular sealing member 62, and the sealing member 62 includes a through hole 64 through which the connector housing 60 penetrates, an annular body portion 66 including a seal portion 68 that comes into contact with a mating connector housing 14 and seals a gap between the connector housing 60 and the mating connector housing 14, and a locking portion 72 that protrudes from the body portion 66 in a direction away from the through hole 64 in a direction intersecting the central axis of the through hole 64 and is locked to the connector housing 60.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a connector provided with a sealing member and a sealing member for a connector.

Conventionally, as a kind of connector used for electrically connecting between in-vehicle devices, a connector provided with a sealing member for sealing a mating portion with a mating portion has been known. For example, Japanese Patent Application Laid-Open No. 2013-45509 (Patent Document 1) has a tubular terminal accommodating portion for accommodating terminals and a through hole through which the terminal accommodating portion of the connector housing penetrates, and is fitted into the terminal accommodating portion. A connector having an annular sealing member mounted on it is disclosed. In this connector, a sealing member is sandwiched between the inner peripheral surface of the tubular hood portion of the mating connector housing fitted around the terminal accommodating portion and the outer peripheral surface of the terminal accommodating portion. As a result, the gap between the connector housing and the mating connector housing is hermetically sealed by the sealing member, and water is prevented from entering the inside of the terminal accommodating portion through this gap.

Japanese Unexamined Patent Publication No. 2013-45509

By the way, for the purpose of preventing the seal member from detaching from the connector housing, the seal member is provided with a locking portion that penetrates a hole provided in the back wall of the connector housing and is locked to the connector housing. .. For example, in the seal member described in Patent Document 1, locking portions projecting toward the back wall of the connector housing are provided at a plurality of locations on the periphery of the annular main body portion constituting the seal member. Therefore, when mounting the seal member on the connector housing, it is difficult to confirm the position of the locking portion of the seal member from the opening side of the housing. As a result, it may take time and effort to penetrate the plurality of locking portions into the respective holes provided in the back wall, and further improvement has been required.

Therefore, a connector provided with a new sealing member capable of easily confirming the position of the locking portion of the sealing member and a sealing member for the connector will be disclosed.

The connector of the present disclosure includes a connector housing and an annular sealing member, and the sealing member comes into contact with a through hole through which the connector housing penetrates and the mating connector housing to contact the connector housing and the mating connector housing. An annular main body including a seal portion that seals the gap between the two, and a main body that protrudes from the main body in a direction that intersects the central axis of the through hole and away from the through hole, and is locked to the connector housing. It is a connector having a locking portion.
The connector seal member of the present disclosure is a connector seal member composed of the seal member in the connector.

According to the present disclosure, it is possible to provide a connector and a seal member for a connector provided with a seal member capable of easily confirming the position of a locking portion of the seal member.

FIG. 1 is an overall perspective view showing a state in which a mating connector is assembled to the connector according to the first embodiment of the present disclosure. FIG. 2 is an exploded perspective view of FIG. FIG. 3 is an exploded perspective view showing the mating connector of FIG. FIG. 4 is an exploded perspective view showing the connector of FIG. FIG. 5 is an enlarged vertical cross-sectional view of FIG. 1 in the axial direction. FIG. 6 is a perspective view of the seal member of FIG. 2 when viewed from the rear. FIG. 7 is an enlarged cross-sectional view showing a state in which the locking portion of the seal member is locked in a hole provided in the back wall of the connector housing. FIG. 8 is an enlarged vertical cross-sectional view of FIG. 1 in the direction perpendicular to the axis.

<Explanation of Embodiments of the present disclosure>
First, embodiments of the present disclosure will be listed and described.
The connectors of the present disclosure are
(1) A connector housing and an annular sealing member are provided, and the sealing member comes into contact with a through hole through which the connector housing penetrates and a gap between the connector housing and the mating connector housing in contact with the mating connector housing. An annular main body including a sealing portion to be sealed and a locking portion that protrudes from the main body in a direction intersecting the central axis of the through hole and away from the through hole, and is locked to the connector housing. It is a connector that has a part.

According to the connector of the present disclosure, the seal member has an annular main body portion having a through hole through which the seal portion and the connector housing penetrate, and a locking portion that is locked to the connector housing, and the locking portion is , Protrudes from the main body in a direction away from the through hole in a direction intersecting the central axis of the through hole. As a result, when the seal member is attached to the connector housing when assembling the connector, the position of the locking portion can be easily confirmed from the opening side of the connector housing, and the locking portion is securely pressed by a jig or the like. be able to. As a result, it becomes easy to assemble the seal member to the connector housing, and the workability of assembling the connector can be improved.

(2) The connector housing has a back wall facing the locking portion in a direction along the central axis, and the back wall has a first surface facing the locking portion and the first surface. It has a second surface on the opposite side and a hole penetrating the first surface and the second surface, and the locking portion includes a base portion and a locking protrusion protruding from the base portion and penetrating the hole. , The locking projection has a protrusion protruding from the second surface, and the protrusion is conical and is preferably locked to the second surface. Since the locking portion has a base portion, stable mounting of the locking portion on the connector housing can be realized. The locking portion has a locking protrusion that protrudes through a hole in the back wall of the connector housing, and the locking protrusion is locked to a second surface opposite to the first surface of the back wall. Therefore, the fixing of the sealing member to the connector housing can be reliably achieved. Moreover, since the locking protrusion has a conical shape, the locking protrusion can be centered and smoothly press-fitted into the hole in the back wall, and the locking portion can be easily attached to the connector housing. ..

(3) In the above (2), it is preferable that the second surface of the back wall has a recess and the hole is open to the bottom wall of the recess. Since the locking protrusion through which the hole is inserted can be accommodated in the recess on the second surface of the back wall, the amount of protrusion of the locking protrusion from the connector housing is reduced, and the connector is secured while ensuring the size of the locking protrusion. The overall size can be reduced.

(4) It is preferable that the locking portions are provided at a plurality of locations that are rotationally symmetrical around the central axis of the through hole. This is because the sealing member is prevented from tilting when the sealing member is assembled to the connector housing by pressing the locking portion with the annular jig. As a result, the sealing member can be more easily assembled to the connector housing, and the workability of assembling the connector can be further improved.

(5) The connector housing has an opening, the main body portion has an induction portion between the seal portion and the locking portion, and the sealing portion has the opening more than the locking portion. It is preferable that the outer peripheral surface of the guide portion is closer to the through hole than the outer peripheral surface of the seal portion. In the seal member, the guide portion provided between the seal portion and the locking portion of the main body portion is arranged on the locking portion side with respect to the sealing portion in contact with the mating connector housing, and the outer peripheral surface of the guiding portion is formed. It is closer to the through hole than the outer peripheral surface of the seal portion, and its height is lowered. As a result, the liquid that has entered through the gap between the connector housing and the mating connector housing is prevented from entering the connector housing at the seal portion, and is discharged to the outside again through the gap between the two connector housings via the guide portion. It is supposed to be done. Therefore, even if the liquid enters the gap between the two connector housings, the guide portion advantageously promotes the discharge to the outside.

The connector seal member of the present disclosure is
(6) A connector seal member composed of the seal member in the connector according to at least one of (1) to (5).

According to the connector seal member of the present disclosure, the seal portion has an annular main body portion having a through hole through which the connector housing penetrates, and a locking portion that is locked to the connector housing. It protrudes from the main body in a direction away from the through hole in a direction intersecting the central axis of the through hole. As a result, the position of the locking portion of the seal member can be easily confirmed, and the workability of assembling the seal member to the connector can be improved.

<Details of Embodiments of the present disclosure>
Specific examples of the connector and the seal member for the connector of the present disclosure will be described below with reference to the drawings. It should be noted that the present disclosure is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

<Embodiment 1>
Hereinafter, the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 8. FIG. 1 shows an overall perspective view of a state in which the mating connector 12 is assembled to the connector 10 according to the first embodiment of the present disclosure. The connector 10 to which the mating connector 12 is assembled is fixed to a housing or the like of an electric device such as an inverter (not shown). The connector 10 can be arranged in any direction, but the Z direction will be described as upward, the Y direction as the width direction, and the X direction as the front in the length direction. Further, for a plurality of the same members, a reference numeral may be added to only a part of the members, and the reference numeral may be omitted for the other members.

<Mother connector 12>
The mating side connector 12 includes a mating side connector housing 14. The mating connector housing 14 is made of synthetic resin, has a square tube shape as shown in FIG. 2, and opens in the front (X direction) and the rear (opposite direction to the X direction) in the length direction. It is arranged like this. On the front side of the mating connector housing 14, a rectangular flat plate shape in front view is projected outward in a flange shape in a direction orthogonal to the central axis of the mating connector housing 14 from the opening peripheral edge of the front opening 16. The fixing portion 18 is formed. Through holes 20 having a circular cross-sectional shape are formed at the four corners of the fixing portion 18 in the plate thickness direction. The peripheral edges of both openings in the front-rear direction of the through hole 20 are tapered so as to expand the diameter of the through hole 20, and an annular groove is formed between the tapered surface and the collar 22 at the peripheral edges of both openings. 24 is formed (see FIG. 1). As a result, resin debris that may be generated when the metal annular collar 22 is attached to the through hole 20 is housed in the groove 24, and the scattering of the resin debris is advantageously prevented. Then, a bolt is inserted into the through hole 20 of the fixing portion 18 to be fixed to the housing of an external device (not shown). An annular rubber seal 28 is attached to the front surface 26 of the fixing portion 18 to electrically connect to the housing of an external device (not shown) and the elastic contact piece 52 of the mating inner shell 48 described later. It comes into contact with a shield member (not shown) to advantageously prevent the ingress of water, dust, etc. (see FIG. 5).

Further, as shown in FIGS. 1 and 2, inside the front opening 16 of the mating connector housing 14, the mating side having a square tube shape connected to the peripheral edge of the front opening 16 and projecting forward. An electric wire insertion portion 30 is provided. A pair of mating wire insertion holes 32, 32 having a rectangular cross-sectional shape are provided so as to open in the front-rear direction at two positions separated in the vertical direction from the protruding end portion of the mating wire insertion portion 30. As shown in FIGS. 2 and 5, the mating terminals 36 crimped to the terminals of the terminal-equipped electric wires 34 face each other in the vertical direction with respect to the pair of mating wire insertion holes 32, 32. It is inserted in a state of being oriented to. The engagement hole 38 formed in each mating terminal 36 in a rectangular cross-sectional shape is engaged with the retainer 40 projecting in each mating wire insertion hole 32, so that the mating terminal 36 is pulled out. This is prevented so that the mating terminal 36 is stably housed and arranged in the mating connector housing 14 (see FIG. 5).

Further, as shown in FIG. 3, the mating side connector housing 14 is provided with a mating side inner shell 48 that is inserted from the rear opening 47 side and housed in the mating side connector housing 14. The mating inner shell 48 is formed by using various metal materials such as brass, copper, copper alloy, aluminum, aluminum alloy, etc., which have conductivity and can be pressed or punched. .. The mating inner shell 48 has a square tubular shape that opens in the front-rear direction, and elastic contact pieces 52 are provided at six locations separated in the circumferential direction on the peripheral edge of the front opening 50. .. Each elastic contact piece 52 is formed by extending forward from the peripheral edge of the front opening 50 and then folding back to the outside of the mating inner shell 48, and the tip portion in the extending direction is the mating inner shell. It is bent inwardly at 48. As a result, of the elastic contact pieces 52, the portion most protruding outward of the inner shell 48 on the mating side is a portion that comes into contact with the shield member (not shown). Further, a rectangular frame-shaped engaged portion 54 projecting forward is provided on the peripheral edge of the front opening 50 facing the width direction (Y direction) of the mating inner shell 48. By engaging the engaged portion 54 with the engaging projection 56 provided at the base end portion of the outer peripheral surface of the mating side electric wire insertion portion 30, the mating side inner shell 48 is stable with respect to the mating side connector housing 14. Is to be retained.

Further, on the front side of the mating connector housing 14, ridges 58a and 58b extending in the length direction (X direction) are provided on both side surfaces of the mating connector housing 14 facing each other in the width direction (Y direction). (See Figures 2, 3 and 8). The ridges 58a and 58b are formed in pairs separated from each other in the vertical direction (Z direction). The ridges 58a and 58b are formed so as to have different positions and different length dimensions in the vertical direction for each type of the mating connector 12.

<Connector 10>
As shown in FIG. 2, the connector 10 includes a connector housing 60 and an annular sealing member 62. The connector housing 60 is made of a synthetic resin having a square tubular shape, and is arranged so as to open in the front (X direction) and the rear (opposite direction to the X direction) in the length direction. The front side of the connector housing 60 has an opening 82 into which the mating side connector housing 14 of the mating side connector 12 is inserted, and a terminal insertion hole 88 into which the terminal 84 is inserted is formed on the rear side of the connector housing 60. ing.

As shown in FIGS. 4 and 5, the front side of the connector housing 60 has a double wall structure. More specifically, the first tubular portion 89 on the front side of the connector housing 60 has a cylindrical inner wall 94 formed so as to extend toward the front side from the second tubular portion 90 on the rear side, and a base of the inner wall 94. An annular back wall 96 projecting outward from the end in a direction orthogonal to the central axis of the inner wall 94, and an extension of the inner wall 94 from the protruding end of the back wall 96 toward the front in parallel with the inner wall 94. It has an outer wall 104 that extends to the end.

<Seal member 62>
The seal member 62 is housed and arranged in an annular recess 92 that is surrounded by an inner wall 94, a back wall 96, and an outer wall 104 formed on the front side of the connector housing 60 and opens toward the front. More specifically, as shown in FIG. 2, for example, since the seal member 62 is provided with a through hole 64 having a rectangular cross-sectional shape with rounded corners at the center thereof, the connector housing 60 The inner wall 94 penetrates the through hole 64, and the seal member 62 is accommodated and arranged in the recess 92. The seal member 62 has an annular main body 66 and a locking portion 72 for locking the main body 66 to the connector housing 60. As shown in FIG. 6, for example, a seal portion 68 is provided on the front side (X direction) side of the main body portion 66, and a guide portion 70 is provided on the rear side of the main body portion 66. That is, the main body 66 has an induction portion 70 between the seal portion 68 and the locking portion 72. The locking portion 72 is a main body portion 66 toward the outside, which is a direction away from the through hole 64 in a direction intersecting the direction (X direction) along the central axis of the through hole 64 (direction orthogonal to the through hole 64 in the present embodiment). It is formed so as to protrude from the four corners of the rear end portion and extend rearward in a triangular cross-sectional shape, and is locked to the connector housing 60. The locking portions 72 are provided at four locations that are rotationally symmetrical around the central axis of the through hole 64. Further, for example, as shown in FIG. 2, when the seal member 62 is housed and arranged in the recess 92 of the connector housing 60, the seal portion 68 is closer to the opening 82 of the connector housing 60 than the locking portion 72. ing. Further, as shown in FIGS. 5 and 6, for example, on the outer peripheral surface of the seal portion 68, two annular outer peripheral side seal lips 106 are separated from each other in the direction along the central axis of the through hole 64. It is provided so as to project outward in a direction orthogonal to the central axis. On the inner peripheral surface of the seal portion 68, one annular inner peripheral side seal lip 108 is provided so as to project inward in a direction orthogonal to the central axis. As shown in FIG. 5, the outer peripheral surface of the guide portion 70 is closer to the through hole 64 than the outer peripheral surface of the seal portion 68 (the protruding end position of the outer peripheral side seal lip 106). Further, in a state where the seal member 62 is housed and arranged in the recess 92 of the connector housing 60, the seal portion 68 constituting the main body 66 is in contact with the mating connector housing 14, and the recess 92 of the connector housing 60 is contacted. The gap between the mating connector housing 14 inserted and arranged and the inner wall 94 of the connector housing 60 is sealed.

As shown in FIG. 2, the back wall 96 constituting the recess 92 of the connector housing 60 is with the locking portion 72 of the seal member 62 in the direction (X direction) along the central axis of the through hole 64 of the seal member 62. They are arranged facing each other. As shown in FIG. 7, the back wall 96 has a first surface 98, which is the bottom surface of the recess 92 facing the locking portion 72 in FIG. 2, a second surface 100 opposite to the first surface 98, and a second surface. It has a hole 102 that penetrates the first surface 98 and the second surface 100. The second surface 100 is provided with a recess 110 that accommodates a locking protrusion 76, which will be described later. In the present embodiment, the second surface 100 of the back wall 96 is configured to include the bottom wall 112 of the recess 110, and the hole 102 penetrating the back wall 96 is opened in the bottom wall 112 of the recess 110. The hole 102 has a tapered shape that reduces the diameter from the first surface 98 side to the second surface 100 side in the plate thickness direction of the back wall 96.

As shown in FIG. 6, the locking portion 72 of the seal member 62 has a base portion 74 having a triangular cross-sectional shape and a locking protrusion 76 protruding rearward from the base portion 74. The locking protrusion 76 has a cylindrical connecting portion 78 formed on the proximal end side and a conical protruding portion 80 formed on the distal end side. The diameter dimension of the protruding portion 80 on the connecting portion 78 side is made larger than the diameter dimension of the connecting portion 78. As a result, as shown in FIG. 7, when the seal member 62 is housed and arranged in the recess 92 of the connector housing 60, the protruding portion 80 of the locking protrusion 76 is first provided on the back wall 96 of the connector housing 60. When the protrusion 80, which is housed while being centered in the tapered hole 102, is further pushed into the hole 102, the protrusion 80 is elastically deformed, so that the protrusion 80 can be further inserted into the hole 102. Will be done. After the protrusion 80 passes through the hole 102, the protrusion 80 elastically returns. As a result, the base end side of the protruding portion 80 is locked to the bottom wall 112 of the recess 110 of the second surface 100, so that the connector housing 60 is prevented from coming out of the hole 102 of the locking portion 72 in the front direction, and the connector housing is prevented from coming out. The separation of the seal member 62 from 60 is prevented. In this state, the base portion 74 of the locking protrusion 76 is in contact with the first surface 98 of the back wall 96.

As shown in FIG. 4, the connector housing 60 is provided with an inner shell 116 that is inserted from the rear side and housed in the inner wall 94 of the connector housing 60. The inner shell 116 has conductivity and is formed by using various metal materials capable of press working, punching, etc., for example, brass, copper, copper alloy, aluminum, aluminum alloy, and the like. The inner shell 116 has a square tubular shape that opens in the front-rear direction, and elastic contact pieces 118 (118a, 118b) are provided at six locations separated in the circumferential direction at the peripheral edges of both openings. Has been done. Of the elastic contact pieces 118 (118a, 118b), the elastic contact pieces 118a provided at positions facing each other in the vertical direction on the front side extend forward while inclining from the front end portion of the inner shell 116 to the inner peripheral side. The tip portion in the extending direction gradually extends forward while inclining toward the outer peripheral side of the inner shell 116 toward the tip side (see FIGS. 4 and 5). As a result, it is advantageously prevented that the tip portion in the extending direction comes into contact with each member constituting the mating side connector 12 and the fitting with the mating side connector 12 is restricted. The elastic contact pieces 118b, which are elastic contact pieces 118 other than the elastic contact pieces 118a, all extend outward from the peripheral edges of both openings in the length direction of the inner shell 116, and then the inner shell 116. It is formed by folding back inward in the length direction of. The portion folded inward in the length direction extends inward while being inclined toward the outer peripheral side of the inner shell 116. As a result, of the elastic contact pieces 118, the elastic contact pieces 118a and 118b provided on the peripheral edge of the front opening of the inner shell 116 are pressed against the outer peripheral surface of the mating inner shell 48 of the mating connector 12. The inner shell 116 and the mating inner shell 48 are electrically connected. Further, among the elastic contact pieces 118, the elastic contact piece 118b provided on the peripheral edge of the rear opening of the inner shell 116 is a shield sleeve described later with respect to the shield member 136 attached to the terminal of the shield electric wire 130 described later. It is electrically connected via 158 (see FIG. 5). As shown in FIG. 4, engagement holes 120 having a rectangular cross-sectional shape are formed on both side surfaces of the inner shell 116 facing the width direction (Y direction). The inner shell 116 engages with the terminal housing 122 by engaging the engaging protrusions 128 projecting from both side surfaces of the terminal housing 122, which will be described later, in the width direction (Y direction). It is designed to be fixed stably.

Further, the connector housing 60 is attached to the terminal housing 122 accommodating the terminal 84, the shielded electric wire 130 connected to the terminal 84 and extending from the rear end portion of the terminal housing 122, and the rear end portion of the terminal housing 122. It is configured to include a back retainer 140 that holds the shielded electric wire 130.

<Terminal housing 122>
As shown in FIGS. 4 and 6, the terminal housing 122 is made of synthetic resin, and is a pair of square tubular terminal housings that open in the front (X direction) and the rear (opposite direction to the X direction) in the length direction. It has 124, 124, and a pair of terminal housings 124, 124 are connected by a connecting portion 126 on the rear end side. A cavity 150 into which the terminal 84 is inserted is formed in each terminal housing 124 by opening in the front (X direction) and the rear (opposite direction to the X direction) in the length direction. Retainers 152 are projected from the inner surfaces of the pair of terminal housings 124 and 124 on the front side of the cavities 150, respectively, and by engaging with the engagement holes 86 of the terminals 84, the terminals 84 are prevented from coming off. The terminals 84 are stably housed and arranged in the terminal housing 124 (see FIG. 5). Engagement protrusions 128 that engage with the engagement holes 120 of the inner shell 116 are projected on both side surfaces of the connecting portion 126 facing each other in the width direction (Y direction) (see FIG. 4). On the rear side of the connecting portion 126, a prismatic shielded electric wire mounting portion 156 that projects rearward from the central portion in the vertical direction (Z direction) is provided. The upper surface and the lower surface of the shielded electric wire mounting portion 156 have a concave shape, so that the shielded electric wire 130 extending rearward from the terminal 84 can be stably mounted. The shielded electric wire 130 and the shield sleeve 158, which will be described later, are sandwiched between the shielded electric wire mounting portion 156 and the inner surface of the connector housing 60. As a result, the vibration of the shielded electric wire 130 can be suppressed, and it is possible to advantageously prevent the contact between the shield sleeve 158 and the elastic contact piece 118b of the inner shell 116 during vehicle vibration.

As shown in FIGS. 2 and 8, grooves 160a and 160b corresponding to the protrusions 58a and 58b projecting from the outer peripheral surface of the mating connector housing 14 are provided on the inner surface of the outer wall 104 of the connector housing 60. There is. By changing the forming positions of the ridges 58a and 58b and the grooves 160a and 160b for each combination of the connector housing 60 and the mating connector housing 14, it is possible to prevent erroneous assembly due to a non-genuine combination of connectors.

<Terminal 84 and shielded wire 130>
As shown in FIGS. 4 and 5, the terminal 84 is crimped to the terminal on the front (X direction) side of the shielded electric wire 130 and electrically connected. More specifically, the shielded electric wire 130 includes a core wire 132, an internal insulating coating 134 that covers the outer circumference of the core wire 132, a shield member 136 that covers the outer circumference of the internal insulating coating 134, and an external insulating coating 138 that covers the outer circumference of the shield member 136. And have. The shield member 136 is a braided wire in which a conductive wire such as an aluminum alloy is woven into a tubular shape, and has flexibility. A terminal 84, which is a female terminal, is crimped to the tip of the core wire 132 exposed to the outside and electrically connected. As shown in FIG. 5, the shield member 136 is folded back to the outside of the outer insulating coating 138 and connected to the inner surface of the tubular shield sleeve 158. The shield sleeve 158 is electrically connected to the inner shell 116 via the elastic contact piece 118b and electrically connected to the mating inner shell 48 via the elastic contact piece 118a.

<Back retainer 140>
As shown in FIGS. 4 and 5, a back retainer 140 and a seal member 162 are attached to the terminal of the shielded electric wire 130. That is, the back retainer 140 and the seal member 162 are mounted on the rear end of the connector housing 60 from which the shielded electric wire 130 connected to the terminal 84 is pulled out. The back retainer 140 has a rectangular plate-shaped base plate portion 141 having a rounded corner portion that is elongated in the vertical direction (Z direction), and has a circular shape at two locations separated in the vertical direction. An electric wire insertion hole 142 is formed so as to penetrate in the plate thickness direction (X direction). On the peripheral edge of the base plate portion 141 of the back retainer 140, a rectangular frame-shaped engaged portion 148 projecting forward is provided at a position facing the back retainer 140 in the vertical direction. At other parts of the peripheral edge of the base plate portion 141, rectangular flat plate-shaped holding pieces 146 that are separated in the circumferential direction and project forward toward the front are provided at six positions. Then, in the terminal of the shielded electric wire 130, the engaged portion 148 is engaged with the engaging projection 164 of the connector housing 60 with the seal member 162 mounted on the front surface 144 of the base plate portion 141 of the back retainer 140. As a result, the back retainer 140 is attached to the rear end of the connector housing 60. The rear surface 145 of the base plate portion 141 of the back retainer 140 is provided with a hood portion 149 in which the shielded electric wire 130 drawn from the electric wire insertion hole 142 is accommodated in the inserted state.

According to the connector 10 of the present disclosure having such a structure, the seal member 62 is attached to the connector housing 60 so that the inner wall 94 of the connector housing 60 penetrates the through hole 64 of the seal member 62, and the connector housing 60 The seal member 62 is housed in the recess 92, and the seal member 62 is arranged adjacent to the back wall 96 of the connector housing 60. Since the annular main body 66 constituting the seal member 62 is provided with the seal 68, the mating connector housing 14 and the connector housing 60 inserted and arranged in the recess 92 of the connector housing 60 by the seal 68. The gap between the inner walls 94 is hermetically sealed. The seal member 62 has a locking portion 72 that is locked to the connector housing 60, and the locking portion 72 is separated from the through hole 64 in a direction intersecting the central axis of the through hole 64 from the main body portion 66. It is formed so as to protrude. As a result, when the seal member 62 is housed in the recess 92 of the connector housing 60 and pushed toward the back wall 96, the locking portion 72 can be easily locked from the front of the recess 92 on the opening side of the recess 92. Can be seen visually. Therefore, since the locking portion 72 can be directly pressed by a jig or the like, the seal member 62 can be easily assembled to the connector housing 60, and the assembly workability of the connector 10 can be improved.

Further, the locking protrusion 76 constituting the locking portion 72 penetrates the hole 102 of the back wall 96 of the connector housing 60, and the protruding portion 80 provided at the tip of the locking protrusion 76 is the first of the back wall 96. By projecting from the two surfaces 100, the base end side of the projecting portion 80 is locked with the bottom wall 112 of the recess 110 constituting the second surface 100 of the back wall 96. As a result, the seal member 62 can be securely fixed to the connector housing 60. Further, since the protruding portion 80 can be accommodated in the recess 110 of the second surface 100, the amount of protrusion of the protruding portion 80 from the back wall 96 can be reduced. Further, since the protruding portion 80 has a conical shape, the protruding portion 80 can be centered and smoothly press-fitted into the hole 102 of the back wall 96, and the locking portion 72 can be easily attached to the connector housing 60. Can be done. Moreover, since the base portion 74 of the locking portion 72 is in contact with the first surface 98 of the back wall 96 while the protruding portion 80 is locked to the second surface 100 of the back wall 96, the connector housing 60 Stable placement of the locking portion 72 with respect to the vehicle can be realized. In addition, since the base portion 74 and the protruding portion 80 of the locking protrusion 76 are connected by the connecting portion 78 of the locking protrusion 76, the degree of freedom in designing each portion of the locking portion 72 can be improved. .. For example, the shape of the base portion 74 can be made a shape that is advantageous for pressing by a jig, and the shape of the protruding portion 80 of the locking protrusion 76 can be made a shape that is advantageous for penetrating the hole 102. Further, since the locking portions 72 are provided at a plurality of locations that are rotationally symmetrical around the central axis of the through hole 64, the seal member 62 is assembled when the seal member 62 is assembled in the recess 92 of the connector housing 60. Tilt is suppressed. Therefore, the sealing member 62 can be more easily assembled to the connector housing 60.

Further, in the seal member 62, the guide portion 70 provided between the seal portion 68 and the locking portion 72 is arranged closer to the locking portion 72 than the sealing portion 68 in contact with the mating connector housing 14, and the guide portion 62 is guided. The outer peripheral surface of the portion 70 is closer to the through hole 64 than the outer peripheral surface of the seal portion 68 defined by the protruding end portion of the outer peripheral side seal lip 106, and the diameter dimension is reduced. As a result, water, dust, etc. that have entered through the gap between the connector housing 60 and the mating connector housing 14 are prevented from entering the connector housing 60 by the seal portion 68, and the connector housing 60 and the connector housing 60 pass through the guide portion 70. It is designed to be discharged to the outside again through the gap with the mating connector housing 14.

<Other embodiments>
The techniques described herein are not limited to the embodiments described above and in the drawings, and for example, the following embodiments are also included in the technical scope of the techniques described herein.

(1) In the first embodiment, the seal member 62 having four locking portions 72 has been described, but the number of locking portions 72 is not limited to this, and any number can be obtained according to the shape of the connector housing 60. A locking portion 72 can be provided. Further, in the first embodiment, the locking portion 72 protrudes outward from the main body portion 66 in a direction orthogonal to the central axis of the through hole 64 of the main body portion 66, but the present invention is not limited to this. For example, depending on the position of the hole 102 of the connector housing 60, for example, a part or all of the locking portion 72 protrudes outward from the main body 66 in a direction in which the locking portion 72 is inclined and intersects the central axis of the through hole 64. You may.

(2) In the first embodiment, the second surface 100 of the back wall 96 has a recess 110, a hole 102 is opened in the bottom wall 112 of the recess 110, and a protrusion provided at the tip of the locking protrusion 76. The description has been made by taking as an example the case where the base end side of the portion 80 is locked to the bottom wall 112 of the recess 110, but the present invention is not limited to this. The base end side of the protrusion 80 may be locked to the second surface 100 of the flat back wall 96 having no recess 110.

(3) In the first embodiment, the case where the protruding portion 80 provided at the tip of the locking protrusion 76 has a conical shape has been described as an example, but the present invention is not limited to this, and the conical trapezoidal shape and the like have been described. Any tapered shape such as a pyramid shape or a pyramid cone shape can be adopted.

10 Connector 12 Mating side connector 14 Mating side connector housing 16 Front opening 18 Fixed part 20 Through hole 22 Color 24 Groove 26 Front 28 Rubber seal 30 Mating side wire insertion part 32 Mating side wire insertion hole 34 Wire with terminal 36 Mating side terminal 38 Engagement hole 40 Retainer 47 Rear opening 48 Opposite side inner shell 50 Front opening 52 Elastic contact piece 54 Engagement part 56 Engagement protrusion 58a Protrusion 58b Protrusion 60 Connector housing 62 Seal member 64 Through hole 66 Main body 68 Seal 70 Induction 72 Locking 74 Base 76 Locking protrusion 78 Connecting part 80 Protruding part 82 Opening 84 Terminal 86 Engagement hole 88 Terminal insertion hole 89 1st cylinder 90 2nd cylinder 92 Recess 94 Inner wall 96 Back wall 98 1st surface 100 2nd surface 102 Hole 104 Outer wall 106 Outer peripheral side seal lip 108 Inner peripheral side seal lip 110 Recessed 112 Bottom wall 116 Inner shell 118 Elastic contact piece 118a Elastic contact piece 118b Elastic contact piece 120 Engagement hole 122 Terminal housing 124 Terminal housing 126 Connecting part 128 Engagement protrusion 130 Shielded wire 132 Core wire 134 Internal insulation coating 136 Shield member 138 External insulation coating 140 Back retainer 141 Base plate 142 Wire insertion hole 144 Front 145 Rear 146 Holding piece 148 Engagement Joint part 149 Hood part 150 Cavity 152 Retainer 156 Shielded wire mounting part 158 Shield sleeve 160a Groove 160b Groove 162 Sealing member 164 Engagement protrusion

Claims (6)

With the connector housing
Equipped with an annular sealing member,
The seal member is
An annular main body including a through hole through which the connector housing penetrates and a seal portion that comes into contact with the mating connector housing and seals a gap between the connector housing and the mating connector housing.
A connector having a locking portion that protrudes from the main body portion in a direction away from the through hole in a direction intersecting the central axis of the through hole and is locked to the connector housing. The connector housing has a back wall facing the locking portion in a direction along the central axis.
The back wall has a first surface facing the locking portion, a second surface opposite to the first surface, and a hole penetrating the first surface and the second surface.
The locking portion has a base portion and a locking protrusion that protrudes from the base portion and penetrates the hole.
The locking protrusion has a protrusion that protrudes from the second surface.
The protrusion has a conical shape and is locked to the second surface.
The connector according to claim 1. The second surface of the back wall has a recess.
The connector according to claim 2, wherein the hole is open in the bottom wall of the recess. The connector according to any one of claims 1 to 3, wherein the locking portions are provided at a plurality of locations that are rotationally symmetrical around the central axis of the through hole. The connector housing has an opening and
The main body portion has an induction portion between the seal portion and the locking portion.
The seal portion is closer to the opening than the locking portion,
The outer peripheral surface of the guide portion is closer to the through hole than the outer peripheral surface of the seal portion.
The connector according to any one of claims 1 to 4. A connector seal member composed of the seal member in the connector according to any one of claims 1 to 5.

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