JP6834645B2 - Waterproof connector - Google Patents

Description

The present invention relates to a waterproof connector.

Conventionally, a waterproof connector that prevents water from entering the inside of the connector is known. For example, in the waterproof connector described in Patent Document 1 below, a rubber stopper is fitted in a tubular portion provided at the rear of the housing. The rubber stopper adheres in a liquid-tight manner to the outer peripheral surface of the electric wire that passes through the inside of the tubular portion and is pulled out rearward, and also adheres in a liquid-tight manner to the inner peripheral surface of the tubular portion. A rubber stopper holder is attached to the rear side of the rubber stopper to prevent the rubber stopper from coming off. The rubber stopper holder includes a rear wall facing the rear surface of the rubber stopper and an elastic locking piece that can be locked to a locking projection projecting from the outer surface of the housing. By locking the locking projection and the elastic locking piece in the front-rear direction (the direction in which the rubber stopper holder is detached), the rubber stopper holder is prevented from being detached.

JP2012-28073A

However, in the above configuration, there is a possibility that a gap may be created between the rear end of the tubular portion and the rear wall of the rubber stopper holder, and if water collects in this gap, water will enter the connector due to the capillary phenomenon. There are concerns about being drawn in. It is not desirable to raise such a concern in order to improve the waterproofness of the waterproof connector.

Therefore, it is conceivable to provide the rubber stopper with a portion (referred to as a holding portion) sandwiched between the rear end portion of the tubular portion and the rear wall of the rubber stopper holder. By providing the sandwiching portion on the outer peripheral surface of the rubber stopper so as to project, the sandwiching portion is sandwiched between the rear end portion of the tubular portion and the rear wall of the rubber stopper holder, and elastically adheres to both of the tubular portion. The gap between the rear end and the rear wall of the rubber stopper holder will be closed.

However, in such a configuration, the elastic force of the holding portion causes the rear wall of the rubber stopper holder to be pressed backward (in the detaching direction). If the rubber stopper holder is pressed in the detaching direction by an excessive force, an excessive force will continue to act on the locking surface between the locking projection and the elastic locking piece, which is not desirable.

The present invention has been completed based on the above circumstances, and provides a waterproof connector capable of improving waterproofness while preventing the rubber stopper holder from being pressed in the detaching direction by an excessive force. The purpose is to do.

The waterproof connector of the present invention is fitted into a housing in which a terminal fitting connected to a terminal portion of an electric wire is housed and a tubular portion that opens rearward at the rear, and the tubular portion. A rubber stopper that is liquid-tightly adhered to the outer peripheral surface of the electric wire that is pulled out rearward through the inside of the tubular portion and that is liquid-tightly adhered to the inner peripheral surface of the tubular portion, and after the rubber stopper. The rubber stopper holder is attached to the side to prevent the rubber stopper from coming off, the rubber stopper holder has a rear wall facing the rear surface of the rubber stopper, and the housing and the rubber stopper holder are It has a lock structure that locks each other in the front-rear direction to prevent the rubber stopper holder from coming off, and the rubber stopper is projected from the outer peripheral surface of the rubber stopper to form a rear end portion of the tubular portion and the rubber stopper. It has a rubber portion arranged between the rear wall of the holder, and the rubber portion has a ridge portion that protrudes forward and abuts on the rear end portion of the tubular portion, and is rear of the tubular portion. An inclined surface inclined with respect to the front-rear direction is formed on at least one of the contact surfaces between the end portion and the ridge portion.

According to the present invention, the flange portion and the ridge portion close the gap between the rear end portion of the tubular portion and the rear wall of the rubber stopper holder, so that the waterproof property can be improved. Further, the elastic force of the flange portion and the ridge portion is dispersed in the direction intersecting the front-rear direction by the inclined surface formed on at least one of the contact surfaces between the rear end portion of the tubular portion and the ridge portion. Therefore, it is possible to prevent the rubber stopper holder from being pressed in the detaching direction by an excessive force.

A cross-sectional view showing a normal mating state of the connector in this embodiment with the mating connector. An exploded perspective view showing a connector Perspective view showing the housing Perspective view showing a rubber stopper Perspective view showing the connector seen from the front Perspective view showing the connector seen from the rear Floor plan showing the connector Bottom view showing the connector Side view showing the connector Sectional view showing the connector

Preferred embodiments of the present invention are shown below.
In the waterproof connector of the present invention, the inclined surface may be formed at the rear end portion of the tubular portion and may be provided along the outer peripheral edge of the rear end portion of the tubular portion. According to such a configuration, the ridge portion in contact with the inclined surface can escape to the outside.

<Example 1>
Hereinafter, an embodiment embodying the present invention will be described in detail with reference to FIGS. 1 to 10.
The waterproof connector (hereinafter, simply referred to as connector C) in this embodiment is a shielded connector connected to the terminal portion of the shielded cable (electric wire) 10. The connector C is a communication connector mounted on a vehicle such as an electric vehicle or a hybrid vehicle, and is connected to a counterparty connector 80 provided in an in-vehicle camera module such as a back monitor camera.

Hereinafter, in each component, the fitting surface side of both connectors C and 80 (the left side of FIG. 1 for the connector C and the right side of FIG. 1 for the mating connector 80) is the front side, and the upper side of FIG. The side where the lock structure of both connectors C and 80 is provided) will be described as an upper side, and the lower side will be described as a lower side.

The shielded cable 10 is a cable capable of high-speed communication, and includes a plurality of electric wires 11 as signal lines, a shield member 12 that collectively surrounds the electric wires 11, and an insulating sheath 13 that covers the outer periphery of the shield member 12. And have. As the shield member 12, for example, a braided member in which a metal wire is woven or a metal foil such as aluminum foil can be used.

The connector C includes a housing 30 in which a shield terminal (terminal metal fitting) 20 connected to the terminal portion of the shielded cable 10 is housed therein.
The shield terminal 20 is a female terminal fitting to which the tab portion 84 of the mating side shield terminal 83, which will be described later, is inserted and connected when the connector C and the mating side connector 80 are normally fitted. The shield terminal 20 includes an inner conductor 21 connected to the terminal portion of each electric wire 11, a dielectric 22 accommodating the inner conductor 21, and an outer conductor 23 covering the outer surface of the dielectric 22 (see FIG. 2). ). The inner conductor 21 is fixed to the terminal portion of each electric wire 11 by soldering. The dielectric 22 is made of an insulating synthetic resin material and can accommodate a plurality of inner conductors 21. The inner conductors 21 are arranged in a plurality of stages (two stages in this embodiment) in the vertical direction, and a plurality of stages (three in this embodiment) are arranged in each stage. The outer conductor 23 is a conductive metal plate and has an upper shell 24 that covers the upper surface side of the dielectric 22 and a lower shell 25 that covers the lower surface side. The upper shell 24 and the lower shell 25 are united in the vertical direction. The rear end portion of the outer conductor 23 is crimped along the outer peripheral surface of the shield member 12 exposed at the terminal portion of the shielded cable 10.

The housing 30 is made of an insulating synthetic resin, and includes a terminal accommodating portion 31 in which the shield terminal 20 is accommodated, and an outer cylinder portion 32 that surrounds the outer periphery of the terminal accommodating portion 31. The space between the terminal accommodating portion 31 and the outer cylinder portion 32 is a fitting space 33 into which the hood portion 82 of the mating connector 80 is fitted. The terminal accommodating portion 31 and the outer cylinder portion 32 are integrally connected by a connecting portion 34. A rubber ring 35 that seals the fitting portion between the mating connector 80 and the connector C in a liquidtight manner is fitted to the inner end portion of the fitting space 33.

The terminal accommodating portion 31 is provided with a terminal locking portion 36 that locks the shield terminal 20 and prevents the shield terminal 20 from coming off. The terminal locking portion 36 has a cantilevered front end and is locked to the outer conductor 23 of the shield terminal 20.

A lock arm 37 is provided on the upper surface of the housing 30 to lock the mating connector 80 and the connector C in a normal mated state. Further, a pair of protective walls 38 stand up on both sides of the lock arm 37. The protective wall 38 is provided so as to project to the rear side of the connecting portion 34 and covers up to the rear end of the lock arm 37.

A cylindrical portion 39 having a cylindrical shape that is connected to the terminal accommodating portion 31 and is opened rearward is provided at the rear portion of the housing 30. The tubular portion 39 surrounds the shielded cable 10 that is pulled out to the rear side from the terminal accommodating portion 31.

A rubber stopper 50 is housed inside the tubular portion 39. Of the inner peripheral surface of the tubular portion 39, the portion where the rubber stopper 50 is in close contact is an arc surface with no unevenness (see FIG. 3). Further, the rear end portion of the outer peripheral surface of the tubular portion 39 (the portion rearward of the pair of protective walls 38) is a portion covered by the peripheral wall 62 of the rubber stopper holder 60 described later.

The housing 30 is provided with a lock protrusion 41 that constitutes a lock structure that prevents the rubber stopper 60, which will be described later, from coming off (see FIG. 10). The lock protrusion 41 projects from the outer peripheral surface of the tubular portion 39. A pair of lock protrusions 41 are provided on both sides of the tubular portion 39 in the width direction (diameter direction). The pair of lock protrusions 41 are symmetrical with respect to the central axis of the tubular portion 39.

The front surface of the lock protrusion 41 is a housing-side locking surface 42 on which the lock piece 66 of the rubber stopper holder 60 is locked. The housing-side locking surface 42 is a steep surface orthogonal to the front-rear direction. The rear surface of the lock protrusion 41 is a guide surface 43 for guiding the ride of the lock piece 66. The guide surface 43 is inclined so that the protrusion dimension gradually increases from the rear end of the lock protrusion 41 toward the front.

An inclined surface (hereinafter, referred to as a housing-side inclined surface 44) inclined with respect to the front-rear direction is formed at the rear end portion (rear end portion of the tubular portion 39) of the housing 30. The housing-side inclined surface 44 will be described in detail later.

The connector C has a rubber stopper 50 that is fitted into the tubular portion 39. The rubber stopper 50 is made of rubber such as silicon rubber, and is in close contact with the outer peripheral surface of the shielded cable 10 which is pulled out rearward through the inside of the tubular portion 39 in a liquid-tight manner and the inner peripheral surface of the tubular portion 39. Adheres to the liquid-tight state. The rubber stopper 50 has a cylindrical shape that follows the outer shape of the shielded cable 10 as a whole, and an insertion hole 51 through which the shielded cable 10 is inserted is formed in a substantially central portion of the rubber stopper 50. The inner peripheral surface of the insertion hole 51 has a circular shape having substantially the same shape over the entire length of the rubber stopper 50.

The rubber stopper 50 includes a main body portion 52 that fits into the tubular portion 39 of the housing 30, and a fitting portion 53 that fits into the through hole 63 of the rubber stopper holder 60, which will be described later.
A plurality of outer peripheral lip portions 54 are projected on the outer peripheral surface of the main body portion 52. The outer peripheral lip portion 54 elastically adheres to the inner peripheral surface of the tubular portion 39. Further, a plurality of inner peripheral lip portions 55 are projected from the inner peripheral surface of the main body portion 52. The inner peripheral lip portion 55 elastically adheres to the outer peripheral surface of the shielded cable 10.

The fitting portion 53 has a cylindrical shape that matches the through hole 63 of the rubber stopper holder 60. The outer diameter of the fitting portion 53 is one size smaller than the outer diameter of the main body 52. The fitting portion 53 penetrates the through hole 63 of the rubber stopper holder 60, which will be described later, and projects to the rear side of the rear wall 61.

A flange portion 56 is provided between the main body portion 52 and the fitting portion 53 so as to be arranged between the rear end portion of the tubular portion 39 and the rear wall 61 of the rubber stopper holder 60. The collar portion 56 will be described in detail later.

The connector C has a rubber stopper holder 60 attached to the rear side of the rubber stopper 50 to prevent the rubber stopper 50 from coming off. The rubber stopper holder 60 is made of synthetic resin and has a cap shape that covers the tubular portion 39 as a whole.

The rubber stopper holder 60 includes a rear wall 61 facing the rear surface (rear surface of the collar portion 56) of the rubber stopper 50, and a peripheral wall 62 covering the outer peripheral surface of the tubular portion 39. The rear wall 61 has an annular shape, and a through hole 63 through which the shielded cable 10 is inserted in a loose state is formed in the central portion. The rear wall 61 has a wall surface orthogonal to the front-rear direction and covers the rear surface of the collar portion 56.

The peripheral wall 62 projects forward from the outer peripheral edge of the rear wall 61. The peripheral wall 62 has a cylindrical shape that can be fitted externally to the rear end portion of the tubular portion 39, and substantially covers the entire circumference of the tubular portion 39. The peripheral wall 62 has an upper surface wall 64 that covers the upper surface side of the tubular portion 39 (see FIG. 7) and a lower surface wall 65 that covers the lower surface side of the tubular portion 39 (see FIG. 8). The upper surface wall 64 covers up to the vicinity of the rear end of the protective wall 38. The lower surface wall 65 has a larger protrusion dimension from the rear wall 61 than the upper surface wall 64, and covers up to the vicinity of the rear end of the outer cylinder portion 32. A groove 65A into which a rib 46 projecting from the outer peripheral surface of the tubular portion 39 is inserted is formed in the lower surface wall 65 in an elongated shape in the front-rear direction.

The rubber stopper holder 60 is provided with a lock piece 66 constituting a lock structure for preventing the rubber stopper holder 60 from coming off (see FIG. 9). The lock pieces 66 have a cantilever shape in which the front end is a free end, and a pair of lock pieces 66 are provided at positions corresponding to the lock protrusions 41 of the housing 30 (both ends in the width direction of the rubber stopper holder 60). The lock piece 66 is provided between the upper surface wall 64 and the lower surface wall 65, and projects forward from the rear wall 61. As shown in FIG. 2, the inner surface of the lock piece 66 is an arc surface along the outer peripheral surface of the tubular portion 39.

The lock piece 66 has a pair of arm portions 67 that are long in the front-rear direction, and a lock portion 68 that locks to the lock protrusion 41 is passed to the front end portion of the pair of arm portions 67. As shown in FIG. 10, the rear surface of the lock portion 68 is a holder-side locking surface 69 that locks to the housing-side locking surface 42. The holder-side locking surface 69 is a surface orthogonal to the front-rear direction.

As shown in FIG. 10, the rubber stopper 50 comes into contact with the flange portion 56 projecting from the outer peripheral surface of the rubber stopper 50 and the rear end portion of the tubular portion 39 protruding forward from the collar portion 56. It has a ridge portion 57. The collar portion 56 is provided at a position closer to the rear side than the center in the front-rear direction of the rubber stopper 50. The flange portion 56 has a plate surface that protrudes from the outer peripheral surface of the rubber stopper 50 in a direction orthogonal to the axial direction of the rubber stopper 50 and is orthogonal to the axial direction of the rubber stopper 50.

The flange portion 56 is continuously provided on the entire circumference of the rubber stopper 50, and the protrusion dimension from the outer peripheral surface of the rubber stopper 50 is constant over the entire circumference. The collar portion 56 projects outward from the outer peripheral lip portion 54. As for the flange portion 56, the thickness dimension (dimension in the front-rear direction) of the collar portion 56 is constant over the entire circumference.

The ridge portion 57 is projected from the front surface of the flange portion 56. The ridge portion 57 is continuously provided on the entire circumference of the flange portion 56, and forms an annular shape in which the entire circumference is closed when viewed from the front. The ridge portion 57 is provided along the outer peripheral edge of the flange portion 56. The ridge portion 57 is formed in a region substantially half in the protruding direction of the flange portion 56 (the radial direction of the rubber stopper 50). The rear surface of the flange portion 56 is a flat surface without unevenness.

As shown in FIG. 10, a housing-side inclined surface 44 and a rubber stopper-side inclined surface 58 inclined with respect to the front-rear direction are formed on the contact surface between the rear end portion of the tubular portion 39 and the ridge portion 57. ing.

The housing-side inclined surface 44 is provided along the outer peripheral side edge of the rear end portion of the tubular portion 39. The housing-side inclined surface 44 is continuous over the entire circumference along the outer peripheral edge of the tubular portion 39. The housing-side inclined surface 44 is inclined so that the outer diameter of the tubular portion 39 gradually increases from the rear end to the front, in other words, the ridge portion 57 that abuts on the housing-side inclined surface 44 from the rear. It has a slope that slides outward toward the front. The width dimension of the housing-side inclined surface 44 (the radial dimension of the tubular portion 39) is constant over the entire circumference. A tapered portion 45 is formed on the inner peripheral edge of the rear end portion of the tubular portion 39 so as to decrease the inner diameter dimension toward the front.

The rubber stopper side inclined surface 58 is formed on the inner surface (inner peripheral surface) of the ridge portion 57 in the radial direction. The rubber stopper side inclined surface 58 is continuous over the entire circumference along the inner peripheral surface of the ridge portion 57. The rubber stopper side inclined surface 58 is inclined in the same direction as the housing side inclined surface 44, in other words, is inclined so that the inner diameter dimension of the ridge portion 57 gradually increases from the rear end to the front. The inclination angles of the rubber stopper side inclined surface 58 and the housing side inclined surface 44 are the same. The width dimension of the rubber stopper side inclined surface 58 (the dimension in the radial direction of the rubber stopper 50) is made larger than the width dimension of the housing side inclined surface 44. In other words, the dimension of the rubber stopper side inclined surface 58 in the front-rear direction is larger than the dimension of the housing side inclined surface 44 in the front-rear direction. The outer peripheral surface of the ridge portion 57 is located at the end in the radial direction of the flange portion 56, and is a surface parallel to the axial direction of the rubber stopper 50.

The mating connector 80 is a shield connector having the same configuration as the connector C. Similar to the connector C, the mating side connector 80 has a mating side housing 81 in which the mating side shield terminal 83 connected to the terminal portion of the mating side shielded cable 86 is housed therein, and is located at the rear portion of the mating side housing 81. Is provided with a tubular portion 89 that opens rearward.

The mating side shield terminal 83 is a male terminal fitting having a tab portion 84 projecting forward. A hood portion 82 that opens forward and fits into the fitting space 33 of the connector C is provided at the front portion of the mating housing 81. A lock receiving portion 85 for locking the lock arm 37 is projected from the upper surface of the mating housing 81.

The mating rubber stopper 87 is fitted into the tubular portion 89 so as to be liquid-tightly adhered to the outer peripheral surface of the mating shielded cable 86 and to be liquid-tightly adhered to the inner peripheral surface of the tubular portion 89. On the rear side of the rubber stopper 87, a mating side rubber stopper holder 88 that prevents the mating side rubber stopper 87 from coming off is attached. Like the connector C, the mating housing 81 and the mating rubber stopper holder 88 have a locking structure that locks each other in the front-rear direction to prevent the mating rubber stopper 88 from coming off.

The mating rubber stopper 87 has a flange portion 87A projecting from the outer peripheral surface of the rubber stopper 87 and arranged between the rear end portion of the tubular portion 89 and the rear wall 88A of the mating rubber stopper holder 88. However, the collar portion 87A has a ridge portion 87B that protrudes forward and abuts on the rear end portion of the tubular portion 89. A housing-side inclined surface 89A and a rubber stopper-side inclined surface 87C that are inclined in the front-rear direction are formed on the contact surface between the rear end portion of the tubular portion 89 and the ridge portion 87B.

The mating side shield cable 86, the mating side shield terminal 83, the mating side housing 81, the mating side rubber stopper 87, and the mating side rubber stopper holder 88 of the mating side connector 80 are the shielded cable 10 and the shield terminal 20 of the connector C, respectively. Since the basic structure is the same as that of the housing 30, the rubber stopper 50, and the rubber stopper holder 60, detailed description thereof will be omitted.

Next, an example of the assembly work of the connector C in this embodiment will be described.
First, the rubber stopper 50 and the rubber stopper holder 60 are passed through the shielded cable 10 in advance. The rubber stopper 50 and the rubber stopper holder 60 are arranged at positions separated rearward from the terminal portion of the shielded cable 10.

Next, the shield terminal 20 is connected to the terminal portion of the shielded cable 10. The inner conductor 21 is housed in the dielectric 22, and the exposed conductor at the end of each electric wire 11 is soldered to the inner conductor 21. After that, the outer conductor 23 is assembled on the outer circumference of the dielectric 22 and connected to the shield member 12.

Next, the shield terminal 20 is housed in the housing 30. When the shield terminal 20 is inserted into the terminal accommodating portion 31 of the housing 30 from the rear, the terminal locking portion 36 is locked to the shield terminal 20 and the shield terminal 20 is prevented from coming off.

Next, the rubber stopper 50 is fitted into the tubular portion 39. The rubber stopper 50 is moved along the shielded cable 10 and the main body portion 52 is pushed into the tubular portion 39. The outer peripheral lip portion 54 is elastically crushed and adheres to the inner peripheral surface of the tubular portion 39, and the inner peripheral lip portion 55 is elastically crushed and adheres to the outer peripheral surface of the shielded cable 10. The flange portion 56 is close to the rear end portion of the tubular portion 39, the ridge portion 57 covers the housing side inclined surface 44, and the rubber stopper side inclined surface 58 is along the housing side inclined surface 44.

Next, the rubber stopper holder 60 is fitted into the tubular portion 39. The rubber stopper holder 60 is moved along the shielded cable 10, the lock piece 66 is aligned with the lock protrusion 41, and the peripheral wall 62 of the rubber stopper holder 60 is fitted and pushed into the tubular portion 39. The lock portion 68 of the lock piece 66 is guided by the inclination of the guide surface 43 of the lock protrusion 41, the lock piece 66 elastically bends outward, and eventually the lock portion 68 gets over the lock protrusion 41 and the lock piece 66 elastically returns. The lock portion 68 and the lock protrusion 41 are locked to each other in the front-rear direction, and the rubber stopper holder 60 is prevented from coming off.

When the lock portion 68 gets over the lock protrusion 41, the rear wall 61 of the rubber stopper holder 60 presses the rear surface (rear surface of the collar portion 56) of the rubber stopper 50, and the collar portion 56 and the ridge portion 57 move in the front-rear direction. After elastic contraction and the lock portion 68 get over the lock protrusion 41, the rubber stopper holder 60 is slightly retracted by the elastic restoring force of the flange portion 56 and the ridge portion 57. At this time, although the distance between the rear end portion of the tubular portion 39 and the rear wall 61 of the rubber stopper holder 60 is widened, the flange portion 56 and the ridge portion 57 are in a state of closing the gap. In this state, the rubber stopper-side inclined surface 58 of the ridge portion 57 and the housing-side inclined surface 89A of the tubular portion 39 are in contact with each other, and the force in the front-rear direction intersects the front-rear direction (crosses the front-rear direction) at this contact surface. It is dispersed in the direction of rubber. Further, the ridge portion 57 is slightly displaced outward along the housing-side inclined surface 44.
As described above, the assembly work of the connector C is completed.

Next, the actions and effects of the examples configured as described above will be described.
The connector C of this embodiment has a housing 30 in which a shielded terminal 20 connected to the terminal portion of the shielded cable 10 is housed therein and a tubular portion 39 opening rearward is provided at the rear portion. A rubber stopper that adheres to the outer peripheral surface of the shielded cable 10 that is pulled out rearward through the inside of the tubular portion 39 in a liquid-tight manner and adheres to the inner peripheral surface of the tubular portion 39 in a liquid-tight manner. 50 is fitted, and a rubber stopper holder 60 for preventing the rubber stopper 50 from coming off is attached to the rear side of the rubber stopper 50. The rubber stopper holder 60 has a rear wall 61 facing the rear surface of the rubber stopper 50, and the housing 30 and the rubber stopper holder 60 are locked with each other in the front-rear direction to prevent the rubber stopper holder 60 from coming off. The rubber stopper 50 has a lock piece 66, and the rubber stopper 50 is a flange portion that projects from the outer peripheral surface of the rubber stopper 50 and is arranged between the rear end portion of the tubular portion 39 and the rear wall 61 of the rubber stopper holder 60. 56, the collar portion 56 has a ridge portion 57 that projects forward and abuts on the rear end portion of the tubular portion 39. A housing-side inclined surface 44 and a rubber stopper-side inclined surface 58 inclined in the front-rear direction are formed on the contact surface between the rear end portion of the tubular portion 39 and the ridge portion 57.

According to this configuration, the flange portion 56 and the ridge portion 57 close the gap between the rear end portion of the rubber stopper 50 and the rear wall 61 of the rubber stopper holder 60, so that the waterproof property can be improved. .. Further, due to the inclination of the housing side inclined surface 44 and the rubber stopper side inclined surface 58 formed on the contact surface between the rear end portion of the tubular portion 39 and the ridge portion 57, the bullets of the flange portion 56 and the ridge portion 57 are bulleted. Since the generated force is distributed in the direction intersecting the front-rear direction (the direction parallel to the detaching direction of the rubber stopper 60), it is possible to prevent the rubber stopper holder 60 from being pressed in the detaching direction by an excessive force. it can.

Further, the housing-side inclined surface 44 is provided along the outer peripheral side edge of the rear end portion of the tubular portion 39. According to this configuration, the ridge portion 57 in contact with the housing-side inclined surface 44 can escape to the outside of the tubular portion 39.

<Other Examples>
The present invention is not limited to the examples described by the above description and drawings, and for example, the following examples are also included in the technical scope of the present invention.
(1) In the above embodiment, the ridge portion 57 is provided along the outer peripheral edge of the collar portion 56, but the present invention is not limited to this, and the ridge portion is provided along the intermediate portion or the inner peripheral edge of the collar portion. It may be provided.
(2) In the above embodiment, the case where the connector C is a shielded connector connected to the terminal of the shielded cable 10 has been illustrated, but the present invention is not limited to this, and the connector is a bundle of a plurality of electric wires not covered with a sheath. It may be connected to a terminal. In such a case, the rubber stopper has a plurality of insertion holes formed therein.
(3) In the above embodiment, the case where the connector C is a shielded connector connected to the terminal of the shielded cable 10 is illustrated, but the present invention is not limited to this, and the connector is connected to the terminal of the unshielded cable without a shield. It may be a thing.
(4) In the above embodiment, the case where the shield terminal 20 is housed inside the connector C has been illustrated, but the present invention is not limited to this, and the connector may include a terminal fitting without a shield.
(5) In the above embodiment, the housing-side inclined surface 44 and the rubber stopper-side inclined surface 58 are provided on both the rear end portion of the tubular portion 39 and the abutting surface of the ridge portion 57. Not limited to this, an inclined surface may be formed only on one of the contact surfaces between the rear end portion of the tubular portion and the ridge portion.
(6) In the above embodiment, the lock protrusion 41 and the lock piece 66 are exemplified as the lock structure for preventing the rubber stopper 60 from coming off, but the lock structure is not limited to this, and the lock structures are locked to each other in the front-rear direction. If so, it can be changed to another structure.

C ... Connector (waterproof connector)
10 ... Shielded cable (electric wire)
20 ... Shield terminal (terminal bracket)
30 ... Housing 39 ... Cylindrical part 41 ... Lock protrusion (lock structure)
44 ... Housing side inclined surface (inclined surface)
50 ... Rubber stopper 56 ... Brim part 57 ... Rush part 58 ... Rubber stopper side inclined surface (inclined surface)
60 ... Rubber stopper holder 61 ... Rear wall 66 ... Lock piece (lock structure)

Claims (2)

A housing in which a terminal fitting connected to the terminal portion of an electric wire is housed inside and a tubular portion that opens rearward is provided at the rear.
It is fitted into the tubular portion and closely adheres to the outer peripheral surface of the electric wire that is pulled out rearward through the inside of the tubular portion and also adheres to the inner peripheral surface of the tubular portion in a liquidtight manner. With a rubber stopper
It has a rubber stopper holder that is attached to the rear side of the rubber stopper to prevent the rubber stopper from coming off.
The rubber stopper holder has a rear wall facing the rear surface of the rubber stopper and a peripheral wall covering the outer peripheral surface of the rear end portion of the tubular portion.
The housing and the rubber stopper holder have a lock structure that locks each other in the front-rear direction to prevent the rubber stopper holder from coming off.
The rubber stopper includes a flange portion that protrudes from the outer peripheral surface of the rubber stopper and is arranged between a surface located at the rearmost end of the tubular portion and the rear wall of the rubber stopper holder, and the rubber stopper. Has a fitting portion that fits into a through hole formed in the rear wall of the holder ,
The collar portion has a ridge portion that protrudes forward and abuts on the rear end portion of the tubular portion.
The peripheral wall projects forward from the rear wall and directly faces the outer peripheral surface of the collar portion and the outer peripheral surface of the tubular portion.
A waterproof connector in which an inclined surface inclined with respect to the front-rear direction is formed on at least one of the contact surfaces between the rear end portion of the tubular portion and the ridge portion. The waterproof connector according to claim 1, wherein the inclined surface is formed at the rear end portion of the tubular portion and is provided along the outer peripheral edge of the rear end portion of the tubular portion.

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