WO2014119480A1

WO2014119480A1 - Connector

Info

Publication number: WO2014119480A1
Application number: PCT/JP2014/051485
Authority: WO
Inventors: 真治飯星
Original assignee: 住友電装株式会社
Priority date: 2013-01-29
Filing date: 2014-01-24
Publication date: 2014-08-07
Also published as: JP2014146491A; JP5874655B2

Abstract

A locking arm (16) is provided on a first housing (10) so as to be able to flex. When the first housing (10) is fitted together with a second housing (60), the locking arm (16) elastically latches onto a locking part (63) on the second housing (60) so as to keep the first and second housings (10, 60) fitted together. The first housing (10) is also provided with the following: a protective wall (34) on each side of the locking arm (16), said protective walls (34) being perpendicular to the surface of the first housing (10); a bridging covering wall (35) that covers the tip of the locking arm (16); and a pair of overhanging walls (36) that extend from the tip of the locking arm (16) towards a flexure pivot point (32), cover both widthwise edges of the locking arm (16), and are joined to the covering wall (35) and the protective walls (34) so as to form a single unit.

Description

connector

The present invention relates to a connector.

The connector disclosed in Patent Document 1 includes a female housing that can be mated with a mating male housing. The female housing is provided with a deflectable lock arm. When the male and female housings are properly fitted, the lock arm resiliently locks the lock portion of the male housing so that both housings are held in the fitted state. Further, in the female housing, a pair of protective walls (referred to as “standing wall” in Patent Document 1) are erected on both sides sandwiching the lock arm, and are integrally connected with both protective walls and the tip of the lock arm A covering wall (referred to as "protective wall" in Patent Document 1) covering the part is installed. By providing the cover wall and both protective walls in the female housing, the tip of the lock arm is kept protected from foreign matter even when the female housing is alone.

JP 2005-216614 A (FIG. 2)

By the way, in the case of the above-mentioned conventional connector, since it is necessary to provide a covering wall in the height position which can cover the tip part of a lock arm, there is a situation of heightening as a whole connector. In view of this, if the cover wall is made thin to reduce the height, the cover wall may become fragile and may be deformed at the time of interference with foreign matter. For this reason, although it is necessary to reinforce the cover wall, there is a problem that merely reinforcing the connector structure is unnecessarily complicated and not preferable.

The present invention is completed based on the above-mentioned circumstances, and it is an object of the present invention to make the structure of a connector unnecessary unnecessarily when providing a reinforcing structure.

The present invention comprises a first housing that can be mated with a second housing, and the first housing elastically locks the lock portion of the second housing when mated with the second housing. 1. A lock arm for holding the second housing in a fitted state is provided so as to be flexible, and a pair of protective walls are erected on both sides across the lock arm, and a cover covering the tip of the lock arm A wall is installed, and further, the first housing is integrally connected to the cover wall and the both protective walls and extends from the tip end of the lock arm toward the flexible fulcrum and extends in the width direction of the lock arm. A feature is that a pair of weir walls covering both ends are provided in a protruding manner.

Even if the cover wall is made thin in response to the demand for a reduction in the height of the connector, the cover wall is provided in a form integrally connected to the cover wall and both protective walls. It can be reinforced by walls and maintain a predetermined strength. Further, since both the hook walls extend from the tip of the lock arm toward the flexible fulcrum to cover both widthwise ends of the lock arm, the lock arm may be curled up due to the winding of the electric wire or the like. It is avoided. Therefore, the configuration of the connector is not unnecessarily complicated because the double wedge wall is not provided merely for the reinforcement of the cover wall but also serves as the anti-overturn function of the lock arm.

In Example 1, it is a front view of the 1st housing with which a seal ring was equipped. It is sectional drawing which shows the state with which the 1st, 2nd housing was fitted correctly. It is a partially expanded view of FIG. It is a partially broken plan view showing a state in which the first and second housings are properly fitted. It is sectional drawing cut in the position corresponding to the removal prevention part in the 1st housing with which the seal ring was mounted. It is a partially broken plan view of the 1st housing with which a seal ring was equipped. It is a side cross-sectional view of the 1st housing with which the seal ring was equipped. It is a front view of a 1st housing. It is a sectional side view of the 1st housing. It is a top view of the 1st housing.

Preferred embodiments of the present invention are shown below.
The cover wall is bridged in the width direction between the two protective walls and integrally connected to the two protective walls. This reinforces the cover wall more firmly.

Each of the cover wall and the both collar walls has a flat plate shape along the width direction. This can suppress the height of the connector from becoming high.

The both collar walls are arranged to entirely cover the range from the tip of the lock arm to the bending fulcrum of the lock arm among both widthwise ends of the lock arm. In this manner, the lock arms are protected more reliably by covering the both widthwise end portions of the lock arms over a wide range.

The lock arm is provided with a lock hole through which the lock portion of the second housing is fitted, and both the wedge walls are disposed at a position not covering the lock hole. Thereby, when the first and second housings are fitted, it is possible to visually recognize the state where the lock portion of the second housing is fitted in the lock hole, and it is detected that the first and second housings are in the fitted state can do.

The both eyelid walls are configured to project inward in the width direction from the both protective walls, and the overhanging ends of the both eyelid walls are oblique edge portions inclined in a direction toward the cover wall in plan view. ing. According to this, it is possible to avoid that the electric wire which is turned in a loop shape is caught on the wall, and to improve the handling of the electric wire.

The first housing has a housing body on which the hood portion of the second housing can be fitted. The housing body is provided between the housing body and the hood portion when fitted with the second housing. There is provided a seal ring which is elastically held between the first and second housings in a fluid-tight manner, and the seal ring is located on the side where the lock arm is located, by the lock arm and the double collar wall. It is obscured. Since the seal ring is covered by the lock arm in addition to the lock arm, for example, during high pressure cleaning, the seal ring is prevented from being flooded and the high pressure water prevents the seal ring from being deformed.

Example 1
A first embodiment of the present invention will be described with reference to FIGS. The connector according to the first embodiment includes first and

second housings

10 and 60 which can be fitted to each other, and a seal ring 80 which is attached to the first housing 10 and which seals the first and

second housings

10 and 60. Have. In the following description, in the front-rear direction, the mutual fitting surface side of the first and

second housings

10 and 60 is referred to as the front.

The second housing 60 is made of synthetic resin and, as shown in FIG. 2, has a block-shaped terminal mounting portion 61 and a cylindrical hood portion 62 projecting forward from the front end of the terminal mounting portion 61 There is. The male terminal fitting 5 is inserted into and mounted on the terminal mounting portion 61 from the rear. The male terminal fitting 5 is connected to the end of the electric wire 6 by crimping, and has a male tab 7 which protrudes into the hood 62 in a state of being accommodated in the terminal mounting portion 61.

A lock portion 63 is provided in a protruding manner on the upper wall upper surface of the hood portion 62. Further, on the inner surface of the front end (opening end) of the hood portion 62, a tapered second slope 64 is formed over the entire circumference.

The first housing 10 is made of synthetic resin, and as shown in FIGS. 8 and 9, the block-shaped housing body 11, the cylindrical outer wall 12 surrounding the housing body 11, the outer wall 12 and the housing And a connecting portion 13 along a radial direction connecting the main body 11. A fitting space 14 in which the hood portion 62 is fitted is opened between the housing body 11 and the outer wall 12 and in front of the connecting portion 13. That is, the hood portion 62 is externally fitted to the housing body 11. The connection portion 13 is a contact stop portion to which a seal ring 80 fitted to the outer surface of the housing main body 11 is applied and held as described later.

A plurality of cavities 15 are formed in the housing main body 11 as shown in FIG. The female terminal fittings 8 are inserted into and accommodated in the respective cavities 15 from the rear. As shown in FIG. 2, the female terminal fitting 8 is connected to the end of the electric wire 4 by crimping, and the male tab 7 is inserted and connected to the front with the fitting of the first and

second housings

10 and 60. And the box 9 to be

A lock arm 16 is provided above the housing main body 11 as shown in FIG.
As shown in FIGS. 6 and 10, the lock arm 16 is a plate-like arm body 31 extending in the front-rear direction, and a protective wall 34 which protrudes laterally from both widthwise end portions of the arm body 31 in the middle of the front-rear direction. And a pair of flexure fulcrum portions 32 integrally connected to the The arm body 31 is capable of bending and deforming in the direction in which the front and rear end portions thereof are vertically moved with the bending fulcrum portion 32 as a supporting point. Then, at the rear end portion of the arm main body 31, there is provided a stepped release operating portion 33 which is pressed when releasing the fitted state of the first and

second housings

10, 60.

At the front end of the lock arm 16, a lock hole 17 is provided. As shown in FIG. 2, when the first and

second housings

10 and 60 are properly fitted, the lock portion 63 is elastically fitted in the lock hole 17 of the lock arm 16, whereby the first and

second housings

10 and 10 are fitted. , 60 are held in the fitted state. In the upper wall of the outer side wall 12, a window 18 where the lock arm 16 can be visually recognized is opened.

Further, as shown in FIGS. 8 and 10, a pair of protective walls 34 are provided upright on both sides of the lock arm 16 at both widthwise end portions of the first housing 10. The two protective walls 34 have a vertical wall shape along the vertical direction, and are formed over substantially the entire length of the housing body 11 in the front-rear direction. The rear portions of the two protective walls 34 are integrally connected to the two deflection fulcrum portions 32 of the lock arm 16.

Further, the first housing 10 is provided with a cover wall 35 which covers the front end portion of the lock arm 16 from above. The cover wall 35 has a flat plate shape along the width direction, and is integrally connected to the upper end of the front ends of both the protection walls 34 so as to be bridged in the width direction between the two protection walls 34.

Further, in the first housing 10, as shown in FIG. 10, a pair of both end portions in the width direction of the lock arm 16 covering from the front end of the lock arm 16 to the front end of the flexible fulcrum 32 from above Wall 36 is provided. For this reason, the gap between the both widthwise end portions of the front part of the lock arm 16 and the both protective walls 34 is filled with the double cap walls 36.

The double-edged wall 36 is in the form of a flat plate that is substantially flush with the cover wall 35, integrally connected to the rear end of the cover wall 35 and the upper ends of both protective walls 34, and projecting inward in the width direction from both protective walls 34. It is assumed. As shown in FIG. 10, both the wedge wall 36 and the cover wall 35 are continuous in a U-shape in a plan view, and the lock hole 17 is exposed and disposed in the window 18 which is the inside. Further, at the rear end of both the collar walls 36, there are provided a pair of oblique edge portions 37 which are inclined toward the front side gradually in a front view in plan view.

Further, as shown in FIG. 8, a pair of retaining holes 19 are formed at both widthwise end portions of the first housing 10. As shown in FIG. 5, the two retaining holes 19 are configured to penetrate the outer wall 12 and the connecting portion 13, and are disposed on the inner rear portion in the radial direction substantially in the forward direction. , And has a locking receiving surface 22 at the front of the inner surface, disposed rearward and substantially along the radial direction.

Moreover, as shown in FIG. 9, the protrusion 23 protrudes and is formed in the connection part 13 of the 1st housing 10 ahead. As shown in FIG. 8, the protrusion 23 extends in the circumferential direction in a wide range so as to surround the housing main body 11 in the remaining area excluding the portion corresponding to the retaining hole 19 in the connecting portion 13. It is assumed. An inner space 24 (see FIG. 9) defined by the inner surface of the projection 23, the front surface of the connecting portion 13 and the outer surface of the housing main body 11 can be fitted with a rear ring portion 87 described later of the seal ring 80. It is done. A tapered inclined surface 25 is formed on a portion of the outer surface of the housing main body 11 connected to the front surface of the connecting portion 13 so as to be in close contact with a guide surface 88 described later of the rear ring portion 87.

As shown in FIG. 3, the inner surface of the protrusion 23 is a regulating surface 26 which is opposed substantially in parallel to the outer surface of the housing body 11. The restricting surface 26 of the projection 23 abuts on the rear side ring portion 87 from the outside, so that the turning up of the ring portion 87 can be controlled.

The outer surface of the projection 23 is opposed to the inner surface of the outer wall 12 and has a tapered first inclined surface 27 whose diameter decreases gradually toward the front. When the hood portion 62 is externally fitted to the housing main body 11, the first slope 27 of the projection 23 and the second slope 64 of the hood portion 62 are arranged to face each other. Furthermore, the outer surface of the protrusion 23 has a horizontal surface 28 which extends in a longitudinal direction substantially toward the connecting portion 13 side after being connected in a step-like manner with the first slope 27 (see FIG. 3).

The seal ring 80 is made of rubber such as silicone rubber, and as shown in FIGS. 1 and 5, the annular seal main body 81 corresponding to the outer surface of the housing main body 11 and the rear in the width direction of the seal main body 81 And a retaining portion 82 projecting radially outward after projecting to the

As shown in FIG. 7, a seal portion 85 having an inner circumferential lip 83 and an outer circumferential lip 84 is formed in the middle of the seal body 81 in the front-rear direction. The inner circumferential lip 83 is in the form of a ridge circumferentially provided on the inner surface of the seal portion 85, and is disposed between the front and rear valleys. The outer peripheral lip 84 is in the form of a protrusion provided circumferentially on the outer surface of the seal portion 85, and is arranged in two in the front-rear direction. In this case, the valleys between the outer peripheral lips 84 are disposed at the same longitudinal position as the inner peripheral lip 83. As shown in FIG. 3, when the first and

second housings

10 and 60 are properly fitted, the inner peripheral lip 83 elastically comes into close contact with the outer surface of the housing main body 11, and the outer peripheral lip 84 has a hood portion It is elastically in close contact with the inner surface of the opening edge side of 62, whereby the first and

second housings

10, 60 are sealed in a fluid tight manner.

Further, the seal body 81 has front and

rear ring portions

86 and 87 substantially along the front and rear direction at both front and rear direction end portions which are the front and rear sides sandwiching the seal portion 85. The front and

rear ring portions

86 and 87 are thinner than the seal portion 85 and do not have a lip, and are in close contact with the outer surface of the housing main body 11 and the inner surface of the hood portion 62. The rear ring portion 87 of the front and

rear ring portions

86 and 87 is longer in the front-rear direction than the front ring portion 86. Further, as shown in FIG. 3, a tapered guide surface 88 is cut out on the inner periphery of the rear end of the rear ring portion 87.

As shown in FIG. 5, the retaining portion 82 is thicker than the seal main body 81 side, and a recess 91 having a substantially L-shaped cross section is cut out on the radially outer side of the front end portion, and this recess 91 has a locking surface 92 disposed substantially along the radial direction forward, and is disposed radially inward of the rear end portion and substantially along the radial direction rearward. It has a contact surface 93. The locking surface 92 is disposed at the same position as the rear end surface 94 of the rear ring portion 87 in the front-rear direction, and the front-rear position regulated by the locking surface 92 and the rear end surface 94 of the rear ring portion 87 is It is parting line PL of the mold at the time of molding.

Next, the operation of the waterproof connector of the first embodiment will be described.
At the time of assembly, the seal ring 80 is attached to the outer surface of the housing body 11 from the front. When the seal ring 80 is properly mounted, as shown in FIG. 5, the two retaining portions 82 are resiliently fitted in the corresponding retaining holes 19 so that the contact surfaces 93 of the two retaining portions 82 are both Further pressing of the seal ring 80 is restricted by coming into contact with the abutment receiving surface 21 of the retaining hole 19, and the locking surface 92 of the both retaining portions 82 is the retaining receiving surface 22 of the two retaining holes 19. And the forward removal of the seal ring 80 is restricted.

Further, the radially outer ends of the both retaining portions 82 elastically contact the inner surface of the outer wall 12, and the radially inner ends of the both retaining portions 82 elastically contact the outer surface of the housing main body 11, The retaining portion 82 is in a state of being radially interposed between the outer wall 12 and the housing body 11. As a result, the retaining portion 82 is positioned and fixed in the retaining hole 19 and the seal ring 80 is held in the normal state.

Further, when the seal ring 80 is properly mounted on the housing body 11, as shown in FIG. 7, the rear ring portion 87 is fitted into the inner space 24 between the projection 23 and the housing body 11 and inserted. As a result, the outer surface of the rear ring portion 87 faces the control surface 26 of the projection 23 with a slight gap (see FIG. 3). As a result, the rear ring portion 87 is positioned and held between the projection 23 and the housing body 11.

Subsequently, the first and

second housings

10 and 60 are fitted to each other such that the hood portion 62 is fitted onto the housing body 11. In the process of fitting the first and

second housings

10 and 60, the second inclined surface 64 of the hood portion 62 is in sliding contact with the outer peripheral lip 84, and a backward displacement force acts on the seal ring 80 as the hood portion 62 is pushed. . In this case, although there is a concern that the rear ring portion 87 may come up along the front surface of the connecting portion 13, according to the first embodiment, the rear ring portion 87 abuts on the restriction surface 26 of the projection 23. This prevents the rear ring portion 87 from being turned over or buckled.

When the first and

second housings

10 and 60 are properly fitted, as shown in FIG. 4, the lock portion 63 is elastically fitted in the lock hole 17 of the lock arm 16 and the state is visually recognized through the window portion 18 It is possible to

In addition, when the first and

second housings

10 and 60 are properly fitted, as shown in FIG. 3, the outer peripheral lip 84 of the seal ring 80 elastically comes into close contact with the inner surface on the open end side of the hood portion 62 At the same time, the opening edge 66 of the hood 62 is positioned so as to cover the projection 23 from the outside, and the second slope 64 of the hood 62 is positioned facing the first slope 27 of the projection 23.

As shown in FIG. 3, even if a gap 50 in the front-rear direction is formed between the opening end of the hood portion 62 and the front surface of the connecting portion 13 by covering the opening edge 66 of the hood portion 62 on the projection 23 The protrusion 23 is positioned at the inner side of the gap 50, and the rear ring portion 87 is not exposed radially outward. For this reason, for example, even if washing water intrudes into the gap 50 at the time of high pressure washing, it is possible that the rear side ring portion 87 is directly wetted by the first sloped surface 27 of the projection 23 being wetted. Absent. As a result, high water pressure does not act on the rear ring portion 87, and the rear ring portion 87 is prevented from being deformed by the water pressure.

Further, the clearance between the lock arm 16 and the both protective walls 34 is filled with both the wedge walls 36 so that the seal ring 80 is covered by the arm body 31 of the lock arm 16 and the double wedge walls 36 when viewed from above. Because it is hidden, the seal ring 80 is not directly exposed to high pressure cleaning water. For this reason, the situation which the seal ring 80 deform | transforms is prevented more reliably.

Moreover, since the front peripheral edge of the lock arm 16 is covered by the cover wall 35 and the both wall walls 36, for example, the electric wire 4 bent in a U-shape from the rear tries to wrap around the front side of the lock arm 16. Since the electric wire 4 abuts on both the collar walls 36, the electric wire 4 is not caught at the front end of the lock arm 16, and the situation where the lock arm 16 is flipped is avoided. In particular, since the rear ends of both the wedge walls 36 are escaped by the two oblique edges 37, it is possible to prevent the electric wire 4 from being caught by the two wedge walls 36.

As described above, according to the first embodiment, since the protrusion 23 of the first housing 10 radially sandwiches the rear ring portion 87 with the housing main body 11, along with the progress of the hood portion 62 A situation in which the rear ring portion 87 is flipped or buckled is avoided. In addition, when the hood portion 62 is externally fitted to the housing main body 11, the opening edge 66 of the hood portion 62 covers the projection 23, so that the rear ring portion 87 can be directly covered with water during high pressure cleaning. Instead, the rear ring portion 87 is prevented from being deformed by high pressure water. Therefore, according to the first embodiment, the sealing performance of the seal ring 80 is exhibited well. In particular, in the case of the first embodiment, since the parting line PL of the mold is defined by the locking surface 92 of the retaining portion 82 and the rear end surface 94 of the rear ring portion 87, the rear ring portion 87 is Since there is a circumstance that the front ring portion 86 tends to be longer in the front-rear direction, the advantage that the turning-up and buckling of the rear ring portion 87 can be avoided by the projection 23 is great.

Further, according to the first embodiment, even if the cover wall 35 is made thin due to a request for reducing the height of the connector, etc., the pair of wedge walls 36 is integrally connected to the cover wall 35 and both protective walls 34. Because the cover wall 35 is provided, the cover wall 35 can be reinforced by the collar wall 36 to maintain a predetermined strength. Moreover, since both the collar walls 36 extend from the front end of the lock arm 16 toward the flexible fulcrum 32 to cover both widthwise ends of the lock arm 16, the lock arm 16 is caused by the winding of the electric wire 4 and the like. It is avoided that the situation which is overturned. Therefore, even if both the wedge walls 36 are provided, the structure of the connector will not be unnecessarily complicated.

Further, since both the wedge walls 36 are disposed so as to entirely cover the range from the front end of the lock arm 16 to the bending fulcrum 32 of the lock arm 16 in both widthwise ends of the lock arm 16, The lock arm 16 is more securely protected.

Moreover, since both the wedge walls 36 are disposed at a position not covering the lock hole 17 of the lock arm 16, the lock portion 63 is fitted into the lock hole 17 when the first and

second housings

10 and 60 are fitted. The state can be visually recognized, and it can be detected that the first and

second housings

10 and 60 are in the fitted state.

Furthermore, since the seal ring 80 is covered by the lock arm 16 and the both wall 36 when viewed from above, for example, the seal ring 80 is prevented from being flooded at the time of high pressure washing, and the high pressure water seals the seal ring. The deformation of 80 is prevented. As a result, predetermined sealability by the seal ring 80 is maintained.

The following technical ideas can be extracted from the first embodiment.
A second housing 60 having a cylindrical hood portion 62, and a housing main body 11 to which the hood portion 62 is externally fitted from the front, and a stop portion (connecting portion along the radial direction on the outer surface of the housing main body 11) 13) and the outer surface of the housing main body 11, and the rear end is held against the contact stopping portion, and further, the hood main body 11 is mounted at a midway portion in the front-rear direction And a seal ring 80 provided with a lip (peripheral lip 84) resiliently in close contact with the inner surface of the hood portion 62 when the portion 62 is externally fitted. The housing includes a front ring portion 86 and a rear ring portion 87 extending along substantially the front-rear direction on both sides of the lip. A projection which the opening edge portion of the hood portion 62 covers when the rear side ring 87 portion is radially interposed between the body 11 and the hood portion 62 is externally fitted to the housing main body 11 It has a feature in having 23.

When the hood portion 62 is externally fitted to the housing main body 11, the seal ring 80 is pulled in the advancing direction of the hood portion 62, and there is a concern that the rear ring portion 87 may be turned over or buckled along the abutment portion. .
However, according to the above configuration, the projection 23 of the first housing 10 radially sandwiches the ring portion 87 on the rear side of the seal ring 80 with the housing main body 11. It is possible to avoid the situation where the ring portion 87 of the frame 87 is flipped or buckled. Moreover, when the hood portion 62 is externally fitted to the housing main body 11, the opening edge portion of the hood portion 62 covers the projection 23, for example, the rear ring portion 87 is directly covered with water during high pressure cleaning. And the rear ring portion 87 is prevented from being deformed by high pressure water.
Therefore, according to the above configuration, it is possible to prevent the sealability between the first and

second housings

10 and 60 from being reduced.

Further, the rear side ring portion 87 is set longer in the front-rear direction than the front side ring portion 86. With such a configuration, the possibility of the rear ring portion 87 being turned up or buckling is further increased, so that the advantage of applying the above configuration is great.

Further, the inner surface of the protrusion 23 is disposed at a position facing the outer surface of the housing main body 11, and can abut against the ring portion 87 on the rear side from the outside to restrict turning up of the ring portion 87 on the rear side. It is considered to be When the rear side ring portion 87 abuts on the restriction surface 26 of the projection 23, the rear side ring portion 87 is reliably prevented from turning up.

Further, the first housing 10 has an outer wall 12 surrounding the housing main body 11 and a radial connecting portion 13 connecting the outer wall 12 and the housing main body 11, and the housing main body 11 and the outer wall 12 and in front of the connecting portion 13, the fitting space 14 in which the hood portion 62 is fitted is opened, and the projection 23 is on the front surface of the connecting portion 13. It is protrusively installed. Since the projection 23 is provided so as to project from the connecting portion 13, the projection 23 does not have a specific structure, and the entire configuration is simplified.

Further, a first inclined surface 27 is provided on the outer surface of the protrusion 23 and is inclined in a direction toward the housing main body 11 toward the front, and the inner surface of the opening edge of the hood portion 62 is the housing main body 11. When the hood portion 62 is externally fitted, a second slope 64 is provided to face the first slope 27. When the opening edge portion of the hood portion 62 covers the projection 23, the first slope 27 of the projection 23 and the second slope 64 of the hood portion 62 face each other, so the high pressure water at the time of high pressure cleaning is the first slope It becomes difficult to reach the rear ring portion 87 through the space between 27 and the second inclined surface 64, and the rear ring portion 87 is more reliably prevented from being flooded. Further, the connector can be prevented from becoming large in the direction in which the hood portion 62 covers the projection 23.

Further, in the seal ring 80, a retaining portion 82 which is engaged with the first housing 10 and restricts the forward removal of the seal ring 80 is formed so as to protrude in the radial direction, and the seal ring 80 is When fitted on the outer surface of the housing body 11, the projection 23 is not formed at a position facing the retaining portion 82, and the outer wall of the first housing 11 is outside the retaining portion 82. 12 are disposed so that the retaining portion 82 is interposed between the outer wall 12 and the housing body 11 in the radial direction. Although the projection 23 is not formed at a position facing the retaining portion 82, the retaining portion 82 is sandwiched between the outer wall 12 and the housing main body 11, so the retaining portion 82 is the same as the rear ring portion 87. It is also avoided to turn over or buckle.

The projection 23 is configured to surround the housing main body 11 except for a portion for locking the retaining portion 82. As a result, it is possible to more reliably avoid the situation in which the rear ring portion 87 is flipped or buckled, and to prevent the rear ring portion 87 from being deformed by high pressure water.

In the seal ring 80, a retaining portion 82 which is engaged with the first housing 10 to restrict the forward removal of the seal ring 80 is formed so as to radially project, and the retaining portion 82 is formed by The locking receiving surface 22 of the first housing 10 has a locking surface 92 facing in the front-rear direction, and the locking surface 92 is disposed at the same position in the front-rear direction as the rear surface of the rear ring portion 87 The parting line PL of the mold is formed by the rear surface of the rear side ring portion 87 and the locking receiving surface 22. As described above, since the parting line PL of the mold is defined by the rear surface of the rear ring portion 87 and the engagement receiving surface 22, the rear ring portion 87 tends to be long. The significance of avoiding the turning-up or the like of the rear ring portion 87 by the projection 23 is significant.

Here, the background circumstances which led to the above-mentioned composition are explained. Conventionally, for example, a waterproof connector disclosed in Japanese Patent No. 4193711 includes a pair of male and female housings that can be fitted to each other. Among these, the female housing has an inner cylindrical portion and an outer cylindrical portion that surrounds the inner cylindrical portion. An annular seal member is fitted on the outer surface of the inner cylindrical portion. On the other hand, the male housing has a cylindrical hood portion which can be externally fitted to the inner cylindrical portion from the front. Further, a plurality of lip is circumferentially provided on the sealing member in the front and rear direction, and when the two housings are fitted, each lip is elastically in close contact with the inner surface of the hood portion and a seal between the two housings is taken It is supposed to be.

In the above-mentioned conventional case, for example, the rear end of the seal member may be elongated to the rear from the rearmost lip due to reasons such as molding reasons. On the other hand, in the process of fitting the two housings, when the opening edge of the hood portion slides on each lip, a shift force in the advancing direction of the hood portion acts on the seal member. If the rear end portion is elongated, the rear end portion of the seal member may be curled up or buckled along the vertical wall located to the rear of the seal member, and there is a possibility that a predetermined sealability can not be obtained. is there. For this reason, it has been required to prevent the sealability between the housings from being reduced, and the above configuration is achieved.

Other Embodiments
The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) When the seal ring is properly mounted on the housing, the outer surface of the rear ring portion may be in contact with the restriction surface of the projection.
(2) The inner peripheral lip may be omitted from the seal portion of the seal ring to form the inner surface of the seal portion flat.
(3) At least one of the first slope, the second slope, and the slope may be omitted to form a straight surface along the front-rear direction.
(4) The second housing may be a housing for a substrate mounted on a printed circuit board, and the male terminal fitting may be in the form of a pin that can be soldered to the substrate.
(5) It is also possible to omit the retaining portion from the seal ring. In that case, the seal ring may be prevented from coming off by the peripheral wall of the front member attached to the housing main body from the front.
(6) The both eyelid walls may be configured to cover the range from the front end of the lock arm to the front end of the flexible fulcrum among the width direction both ends of the lock arm.
(7) The both eyelid walls may be configured to cover a range further rearward from the front end of the lock arm to the rear end of the flexible fulcrum, of both end portions in the width direction of the lock arm.

DESCRIPTION OF SYMBOLS 10 ... 1st housing 11 ... Housing main body 12 ... Outer side wall 13 ... Connection part (contact stop part)
DESCRIPTION OF SYMBOLS 16 ... Lock arm 17 ... Lock hole 22 ... Locking receiving surface 23 ... Protrusion 31 ... Arm main body 32 ... Deflection fulcrum part 34 ... Protective wall 35 ... Cover wall 36 ... Collar wall 60 ... 2nd housing 62 ... Hood part 63 ... Lock part 66 ... opening edge 80 ... seal ring 81 ... seal body 82 ... retaining part 84 ... outer peripheral lip (lip)
85: Seal portion 86: Front ring portion 87: Rear ring portion 92: Locking surface PL: Parting line

Claims

And a first housing engageable with the second housing,
The first housing has a flexible locking arm that elastically holds the lock portion of the second housing at the time of fitting with the second housing and holds the first and second housings in the fitting state. While being provided, a pair of protective walls are erected on both sides of the lock arm, and a cover wall covering the tip of the lock arm is bridged,
The first housing has a pair of collar walls integrally connected to the cover wall and both protective walls and extending from the tip end of the lock arm to the bending fulcrum side to cover both widthwise ends of the lock arm A connector characterized by being protrusively provided.
The connector according to claim 1, wherein the cover wall is spanned in the width direction between the two protective walls and integrally connected to the two protective walls.
The connector according to claim 1 or 2, wherein each of the cover wall and the both collar walls has a flat shape along the width direction.
In the width direction both ends of the lock arm, the both collar walls are disposed so as to entirely cover the range from the tip end of the lock arm to the bending fulcrum of the lock arm. The connector according to any one of claims 1 to 3.
The lock arm is provided with a lock hole through which the lock portion of the second housing is fitted, and both the wedge walls are disposed at a position not covering the lock hole. The connector according to any one of 4.
The both eyelid walls are configured to project inward in the width direction from the both protective walls, and the overhanging ends of the both eyelid walls are oblique edge portions inclined in a direction toward the cover wall in plan view. The connector according to claim 5, characterized in that:
The first housing has a housing body on which the hood portion of the second housing can be fitted. The housing body is provided between the housing body and the hood portion when fitted with the second housing. There is provided a seal ring which is elastically sandwiched to seal between the first and second housings in a fluid tight manner;
The connector according to any one of claims 1 to 6, wherein the seal ring is covered and concealed by the lock arm and the both lock walls on the side where the lock arm is located.