JP5985971B2 - Waterproof connector - Google Patents

Description

  The present invention relates to a waterproof connector, and more particularly to a waterproof connector having a shield.

In recent years, from the viewpoint of environmental protection, electric vehicles, hybrid vehicles, and other vehicles that use electric energy have been put into practical use. Cables drawn from in-vehicle power sources such as batteries are used as motor input / output terminals. When connecting, for example, a connector is directly attached to the motor housing, and a cable from the in-vehicle power source is connected to the connector, so that the motor and the in-vehicle power source are connected via the connector.
Such a connector is located in a harsh environment where it is exposed to rain water, muddy water, car wash water, and the like from the outside of the motor housing, and exposed to lubricating oil of the motor from the inside of the motor housing. For this reason, a connector that can protect the internal conductive member from water and oil is required.

  In addition, it prevents electromagnetic waves generated due to the current flowing in the cable from affecting various on-vehicle electronic devices, and conversely, the current flowing in the cable is affected by electromagnetic waves from the outside. In order to prevent this, as this type of cable, for example, a cable with a shield against electromagnetic waves, such as a cable whose outer periphery is covered with a conductive braid, is used. Things are desired.

For example, as shown in FIG. 24, Patent Document 1 includes a cable-side connector portion 2 attached to ends of a plurality of cables 1 and a housing-side connector portion 3 attached to a housing such as a motor housing. A shielded connector that is fitted together is disclosed.
The cable-side connector 2 and the housing-side connector 3 each have a cable-side outer housing 4 and a housing-side outer housing 5 formed by aluminum die casting so as to have a waterproof structure. The waterproof packing 6 disposed at the contact portion with the outer housing 5 provides waterproofing between the cable-side connector portion 2 and the housing-side connector portion 3, and the inner surface of the cable-side outer housing 4 and the outer surfaces of the plurality of cables 1. The space between the plurality of cables 1 and the cable side connector portion 2 is waterproofed by the wire seal 7 inserted therebetween.

  When the cable-side connector portion 2 and the housing-side connector portion 3 are fitted together, the plurality of connector terminals 8 respectively connected to the plurality of cables 1 and held inside the cable-side connector portion 2 and the inside of the housing-side connector portion 3 Are connected to a plurality of connector terminals 9, and these connector terminals 8 and 9 are covered with a cable-side outer housing 4 and a housing-side outer housing 5 made of aluminum die-casting. Is shielded against.

JP 2010-40396 A

However, since the outer surfaces of the cable-side outer housing 4 and the housing-side outer housing 5 that function as shields are exposed, when the shield connector of Patent Document 1 is used for a motor housing of an electric vehicle, for example, the cable-side outer housing The housing 4 and the housing-side outer housing 5 may be corroded due to adhesion of water from the outside of the motor housing and oil from the inside of the motor housing.
Further, the oil inside the motor housing may penetrate into the connection portions of the connector terminals 8 and 9 and impair the reliability of the conductive connection.

  The present invention has been made in order to solve such a conventional problem, and an object thereof is to provide a waterproof connector capable of protecting a connector terminal and a shield from water and oil.

  In the waterproof connector according to the present invention, the cable side connector portion attached to the end portion of the cable whose outer peripheral portion is covered with the conductive braid is fitted to the housing side connector portion attached to the housing of the connection object. In the waterproof connector in which the cable side terminal of the cable side connector part is connected to the case side terminal of the case side connector part, the case side connector part covers the periphery of the case side terminal and holds the case side terminal A housing-side sealing member that forms a double sealing structure between the housing-side housing and the wall surface of the housing; and a housing-side housing that covers the periphery of the housing-side terminal and that is doubled A cable-side housing that holds the cable-side terminal while covering the periphery of the cable-side terminal. A cable-side sealing member that forms a sealing structure between the cable-side housing and the outer periphery of the cable; And a connector-side sealing member that forms a sealing structure between the housing-side housing and the cable-side housing when the housing-side connector portion and the cable-side connector portion are fitted together When the housing-side connector portion and the cable-side connector portion are fitted, the housing wall surface, the housing-side housing, the cable-side housing, the outer peripheral portion of the cable, the housing-side sealing member, the cable-side sealing member, and the connector are sealed. A waterproof space surrounded by the members is formed, and the cable side shield is connected to the housing side shield in the waterproof space.

The housing-side housing has a first housing formed of an insulator and having an inner tube portion into which the housing-side terminal is inserted and an outer tube portion arranged to cover the outer periphery of the inner tube portion, and the housing side A first housing that holds a terminal and includes a second housing formed of an insulator, and the housing-side sealing member forms a first sealing structure between the first housing and a wall surface of the housing; It is preferable to have a waterproof rubber and a second waterproof rubber that forms the second sealing structure inside the first sealing structure and between the second housing and the wall surface of the housing.
In this case, it is preferable that the housing-side terminal penetrates the second housing, and the second housing has a penetrating portion sealing member that forms a sealing structure in a penetrating portion of the housing-side terminal.
The penetrating portion sealing member can be formed by potting.
The first waterproof rubber and the second waterproof rubber may be integrally formed. In this case, the first waterproof rubber and the second waterproof rubber are integrated by one waterproof rubber member in which the first protrusion is formed on the outer peripheral edge and the second protrusion is formed on the inner peripheral edge. Can be

Preferably, the outer peripheral part of the braid of the cable is covered with an outer skin made of an insulator, and the cable side sealing member forms a sealing structure between the outer skin and the cable side housing.
The inter-connector sealing member can be attached to the housing side housing.
The cable-side connector portion has a plurality of cable-side terminals that are attached to the ends of the plurality of cables and that correspond to the plurality of cables and are covered by the cable-side shield. A plurality of housing side terminals corresponding to the side terminals and covered with a housing side shield, and when the housing side connector portion and the cable side connector portion are fitted to each other, the plurality of housing side terminals and the plurality of cable sides corresponding to each other You may comprise so that a terminal may be connected.

  According to the present invention, when the housing side connector portion and the cable side connector portion are fitted, a waterproof space surrounded by the wall surface of the housing, the housing side housing, the cable side housing, and the plurality of sealing members is formed. Since the cable side shield covering the periphery of the side terminal is connected to the housing side shield covering the periphery of the housing side terminal in the waterproof space, the connector terminal and the shield can be protected from water and oil.

It is a perspective view which shows the state before fitting of the waterproof connector which concerns on Embodiment 1 of this invention. The housing side connector part of the waterproof connector which concerns on Embodiment 1 is shown, (A) is the perspective view seen from diagonally forward, (B) is the perspective view seen from diagonally back. The housing | casing side connector part of the waterproof connector which concerns on Embodiment 1 is shown, (A) is a top view, (B) is a side view. 3 is a front view showing a housing side connector portion of the waterproof connector according to Embodiment 1. FIG. 4 is a rear view showing a housing side connector portion of the waterproof connector according to Embodiment 1. FIG. It is the sectional view on the AA line of FIG. FIG. 3 is an assembled perspective view of a housing-side connector portion of the waterproof connector according to Embodiment 1. The cable side connector part of the waterproof connector which concerns on Embodiment 1 is shown, (A) is a top view, (B) is a side view. 3 is a rear view showing a cable side connector portion of the waterproof connector according to Embodiment 1. FIG. 3 is a front view showing a cable side connector portion of the waterproof connector according to Embodiment 1. FIG. It is the BB sectional view taken on the line of FIG. 3 is an assembly perspective view of a cable-side connector portion of the waterproof connector according to Embodiment 1. FIG. It is sectional drawing which shows a mode that a housing | casing side connector part is attached to the wall surface of a housing | casing. It is sectional drawing which shows the housing | casing side connector part attached to the wall surface of a housing | casing. It is a perspective view which shows the state which fits a cable side connector part to the housing side connector part attached to the wall surface of a housing | casing. It is sectional drawing which shows the state which fits a cable side connector part to the housing side connector part attached to the wall surface of a housing | casing. It is a perspective view which shows the state which fitted the cable side connector part to the housing side connector part attached to the wall surface of a housing | casing. It is sectional drawing which shows the state which fitted the cable side connector part to the housing side connector part attached to the wall surface of a housing | casing. 6 is a rear view showing a housing-side connector portion of a waterproof connector according to Embodiment 2. FIG. It is CC sectional view taken on the line of FIG. It is a front view which shows the waterproof rubber used for the housing | casing side connector part of the waterproof connector which concerns on Embodiment 2. FIG. It is the DD sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. It is a fragmentary sectional view which shows the structure of the conventional waterproof connector.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
FIG. 1 shows a configuration of a waterproof connector according to Embodiment 1 of the present invention. The waterproof connector includes a housing-side connector portion 11 that is attached to a housing that accommodates an object to be connected to a cable, and a cable-side connector portion 31 that is attached to an end portion of the cable. In the first embodiment, a harness 41 in which three cables are bundled is connected to the cable-side connector portion 31, and the cable-side connector portion 31 is fitted to the housing-side connector portion 11, whereby three wires in the harness 41 are connected. Can be connected in the housing.

2A and 2B, the housing-side connector portion 11 has a central axis C1, and includes a housing-side housing 12 made of an insulator and three housings held by the housing-side housing 12. The body side terminal 13 is provided.
The housing side housing 12 has a cylindrical portion 14 formed along the central axis C1 and a flange portion 15 that is formed so as to protrude from the rear end of the cylindrical portion 14 in a direction perpendicular to the central axis C1. . The three housing-side terminals 13 are each arranged in parallel with the central axis C1, the front end portion 13a is positioned near the front end of the cylindrical portion 14, and the rear end portion 13b projects rearward from the rear end of the cylindrical portion 14. ing.
In addition, an annular first waterproof rubber 16 is disposed along the circumference of the housing side housing 12 at the rear end portion of the housing side housing 12, and inside the first waterproof rubber 16 and on the three housing sides. An annular second waterproof rubber 17 surrounding the terminal 13 is disposed, and an end 18 a of the housing side shield is exposed between the first waterproof rubber 16 and the second waterproof rubber 17.

As shown in FIGS. 3A and 3B, the housing side housing 12 is fitted into the first housing 19 including the cylindrical portion 14 and the flange portion 15, and the rear end of the first housing 19. It is formed from a second housing 20 that holds three housing side terminals 13. Each of the first housing 19 and the second housing 20 is formed of an insulator such as an insulating resin.
As shown in FIG. 4, the front end portions 13 a of the three housing side terminals 13 are exposed in the front end openings of the cylindrical portion 14 of the first housing 19. The flange portion 15 is formed with a pair of attachment holes H.

  Further, as shown in FIG. 5, the rear end opening of the first housing 19 is closed by the second housing 20, and the annular second waterproof rubber 17 connects the rear end portions 13 b of the three housing side terminals 13. The annular first waterproof rubber 16 is attached to the first housing 19 so as to surround the second housing 20. That is, the boundary between the first housing 19 and the second housing 20 is located in a region surrounded by the first waterproof rubber 16 and the second waterproof rubber 17. The end 18 a of the housing side shield is also exposed from the area surrounded by the first waterproof rubber 16 and the second waterproof rubber 17.

As shown in FIG. 6, the cylindrical portion 14 of the first housing 19 is formed with an outer cylindrical portion 14a formed along the central axis C1, and an inner side of the outer cylindrical portion 14a and along the central axis C1. It has the inner cylinder part 14b made. The front end 14c of the outer cylinder portion 14a is open, and an opening 14d is formed at the front end of the inner cylinder portion 14b corresponding to each of the three housing side terminals 13. Furthermore, the accommodating part 14e recessed along the inner periphery of the rear end side of the outer cylinder part 14a is formed, and the waterproof rubber 21 between connectors which comprises the sealing member between connectors of this invention is arrange | positioned in the accommodating part 14e. Has been.
A cylindrical casing-side shield 18 made of a conductor such as metal is disposed between the outer cylindrical portion 14a and the inner cylindrical portion 14b so as to cover the periphery of the front end portion 13a of the three casing-side terminals 13. Has been. The casing-side shield 18 has a shape and size corresponding to the outer shape of the inner cylinder portion 14b, and is fitted on the outer periphery of the inner cylinder portion 14b.

The second housing 20 swells toward the rear side opposite to the first housing 19, and is formed along a container-shaped housing main body 22 having an open front end, and a peripheral edge of the open end portion of the housing main body 22. A flange portion 23 is provided. The rear surface 23 a of the flange portion 23 forms substantially the same surface as the rear surface 15 a of the flange portion 15 of the first housing 19, and the end portion 18 a of the housing side shield 18 is connected to the flange portion 15 of the first housing 19. The two housings 20 are exposed to the rear end side of the first housing 19 through the flanges 23.
An annular groove 15b is formed on the rear surface 15a of the flange portion 15 of the first housing 19 so as to surround the second housing 20, and the first waterproof rubber 16 is fitted into the groove 15b. . Similarly, an annular groove 23b is formed on the rear surface 23a of the flange portion 23 of the second housing 20 so as to surround the housing body 22, and the second waterproof rubber 17 is fitted into the groove 23b. .

In addition, the housing body 22 is formed with an opening 22a that penetrates the housing side terminal 13 and a cylindrical potting portion 22b that surrounds the opening 22a, corresponding to each of the three housing side terminals 13.
The housing-side terminal 13 has a front end portion 13a having a socket shape and a rear end portion 13b having a flat plate shape. The front end portion 13a is inserted into the inner cylindrical portion 14b of the first housing 19, and the rear end portion 13b. Passes through the opening 22 a of the housing body 22. The potting portion 22b is filled with a potting material 24 such as a resin as a penetrating portion sealing member, whereby a sealing structure is formed in the penetrating portion of the housing side terminal 13.

  As shown in FIG. 7, the housing-side connector portion 11 having such a configuration inserts the front end portions 13 a of the three housing-side terminals 13 into the inner cylindrical portion 14 b of the first housing 19 and also the outer cylindrical portion 14 a. The housing side shield 18 is inserted between the inner cylindrical portion 14 b and the rear end portions 13 b of the three housing side terminals 13 protruding rearward from the first housing 19 are passed through the opening 22 a of the second housing 20. However, the second housing 20 is attached to the rear end of the first housing 19, the first waterproof rubber 16 is fitted into the groove 15 b of the first housing 19, and the second waterproof rubber 17 is inserted into the second housing 20. It is assembled by fitting in the groove 23b.

On the other hand, as shown in FIGS. 8A and 8B, the cable-side connector portion 31 includes a cable-side housing 32 having a central axis C2 and formed in a cylindrical shape along the central axis C2. A cable-side waterproof rubber 33 that covers the space between the outer peripheral portion of the side housing 32 and the outer peripheral portion of the harness 41 is provided.
As shown in FIG. 9, the harness 41 is a bundle of three cables 42, and each cable 42 is composed of a cable core wire 43 and a cable sheath that covers the outer periphery of the cable core wire 43. 44. In a state where these three cables 42 are bundled, the outer peripheral portion thereof is covered with a conductive braid 45, and the outer peripheral portion of the braid 45 is further covered with a harness outer skin 46 made of an insulator.
The cable-side waterproof rubber 33 constitutes the cable-side sealing member of the present invention. The cable-side waterproof rubber 33 is stretched between the harness outer skin 46 of the harness 41 and the cable side housing 32, and is elastically attached to the outer peripheral portion of the harness outer skin 46. It adheres closely to the outer periphery of the cylindrical cable side housing 32.

As shown in FIG. 10, the cable-side housing 32 holds three flat-plate-shaped cable-side terminals 34 respectively connected to the cable core wires 43 of the three cables 42, and these cable-side terminals 34. Is exposed in the front end opening of the cable-side housing 32.
Further, the front end portion 35 a of the cable side shield held by the cable side housing 32 is also exposed in the front end opening of the cable side housing 32.

  As shown in FIG. 11, the front end portion 32 a of the cable side housing 32 extends along the central axis C <b> 2 and has a cylindrical shape that can be fitted inside the outer cylindrical portion 14 a of the housing side connector portion 11. ing. The three cable side terminals 34 are each connected to the cable core wire 43 of the cable 42 corresponding to the rear end portion, and the front end portion is the front end portion 32a of the cable side housing 32 inside the outer cylinder portion 14a of the housing side connector portion 11. When inserted into the inner cylindrical portion 14b, the corresponding opening portion 14d of the inner cylinder portion 14b is disposed. The cable-side terminal 34 has a smaller cross-sectional area than the opening 14d of the inner cylindrical portion 14b of the housing-side housing 12.

The cable-side housing 32 is provided with a cylindrical cable-side shield 35 made of a conductor such as metal so as to cover the periphery of the three cable-side terminals 34. The cable side shield 35 is conductively connected to the braid 45 drawn from the harness 41 in the cable side housing 32.
A sealing structure is formed between the outer periphery of the harness 41 and the cable-side housing 32 by the cable-side waterproof rubber 33 spanned between the harness skin 46 of the harness 41 and the cable-side housing 32, and is pulled out from the harness 41. The braided 45 is accommodated in the sealing structure.
Further, the front end portion 35a of the cable side shield 35 extends to the vicinity of the tip of the cable side terminal 34 along the front end portion 32a of the cable side housing 32 in parallel with the central axis C2.

  As shown in FIG. 12, the cable-side connector portion 31 having such a configuration includes three cables connected to the three cables 42 of the harness 41 by inserting the cable-side shield 35 into the cable-side housing 32. The side terminal 34 is inserted into the cable side housing 32, the braid 45 pulled out from the harness 41 is connected to the cable side shield 35 in the cable side housing 32, and the harness outer skin 46 of the harness 41 is connected with the cable side waterproof rubber 33. It is assembled by covering between the cable side housings 32.

Next, a method for using the waterproof connector according to Embodiment 1 will be described.
First, as shown in FIG. 13, an opening 52 corresponding to the housing body 22 bulging toward the rear of the housing-side connector portion 11 is formed on the wall surface 51 of the housing that houses the connection object of the cable. Then, the housing side connector portion 11 is brought close to the wall surface 51 from the outside of the housing, and the housing side terminal 13 and the housing body 22 are inserted into the opening 52 of the wall surface 51. In addition, the wall surface 51 of a housing | casing shall be formed from conductors, such as a metal.
In this state, the housing-side connector portion 11 is pressed against the wall surface 51 of the housing, and the housing-side connector portion 11 is brought into contact with the wall surface 51 of the housing as shown in FIG. Fix it.

At this time, the annular first waterproof rubber 16 and the second waterproof rubber 17 disposed on the rear end side of the housing-side connector portion 11 are pressed against the wall surface 51 of the housing. A double annular sealing structure is formed between the wall surface 51 of the housing.
Further, since the end 18a of the casing side shield 18 is exposed at the rear end side of the casing side connector section 11, the end 18a of the casing side shield 18 contacts the wall surface 51 of the casing. That is, the end portion 18a of the casing-side shield 18 is in conductive contact with the wall surface 51 of the casing between the double annular sealing structures formed by the first waterproof rubber 16 and the second waterproof rubber 17. .

  As shown in FIGS. 15 and 16, the cable side connector portion 31 attached to the end of the harness 41 is brought closer to the housing side connector portion 11 fixed to the wall surface 51 of the housing in this way. The front end portion 32a of the cable side housing 32 of the cable side connector portion 31 is inserted inside the outer cylindrical portion 14a of the case side housing 12 of the case side connector portion 11, and the case side connector portion is shown in FIG. 11, the cable side connector 31 is fitted.

  As shown in FIG. 18, the three cable side terminals 34 of the cable side connector portion 31 are respectively fitted to the case side housing of the case side connector portion 11 by fitting the case side connector portion 11 and the cable side connector portion 31. 12 is inserted into the inner cylindrical portion 14 b through the opening 14 d and contacts the front end portion 13 a of the corresponding housing-side terminal 13. Thereby, the cable side terminal 34 and the housing side terminal 13 are conductively connected to each other.

At the same time, the front end portion 35a of the cable-side shield 35 of the cable-side connector portion 31 contacts the outer peripheral surface of the cylindrical housing-side shield 18 of the housing-side connector portion 11, and the cable-side shield 35 and the housing-side shield 18 are mutually connected. Conductive connection. Since the end portion 18a of the housing side shield 18 is conductively connected to the wall surface 51 of the housing by fixing the housing side connector portion 11 to the wall surface 51 of the housing, the cable side shield 35 and the housing side shield 18 are connected. And the wall surface 51 of the housing are conductively connected to each other.
For this reason, for example, by electrically grounding the wall surface 51 of the housing, the housing side shield 18 covering the periphery of the housing side terminal 13 and the cable side shield 35 covering the periphery of the cable side terminal 34 become a ground potential, and the electromagnetic wave The influence by can be cut off.

Further, the front end portion 32a of the cable-side housing 32 of the cable-side connector portion 31 is housed in the housing portion 14e of the housing-side connector portion 11, and the inter-connector waterproof rubber 21 disposed in the housing portion 14e allows the cable-side housing. A sealing structure is formed between the housing 32 and the housing 12.
At this time, a double annular sealing structure is already formed between the housing side housing 12 and the wall surface 51 of the housing by the first waterproof rubber 16 and the second waterproof rubber 17 of the housing side connector portion 11. The potting material 24 forms a sealing structure in a portion where the casing-side terminal 13 penetrates the casing-side housing 12, and the cable-side waterproof rubber 33 provides a sealing structure between the outer periphery of the harness 41 and the cable-side housing 32. Therefore, the fitting of the housing side connector portion 11 and the cable side connector portion 31 causes the wall surface 51 of the housing, the housing side housing 12, the cable side housing 32, the outer peripheral portion of the harness 41, and the first waterproof. A sealed waterproof space S surrounded by the rubber 16, the second waterproof rubber 17, the potting material 24, and the cable-side waterproof rubber 33 is formed.

In the waterproof space S, the cable side terminal 34 is conductively connected to the housing side terminal 13, and the cable side shield 35, the housing side shield 18, and the wall surface 51 of the housing are conductively connected to each other.
For this reason, even if the inside and outside of the housing are exposed to water or oil, water or oil is prevented from entering the waterproof space S, and the housing-side terminal 13 disposed in the waterproof space S, the cable side It is possible to protect the terminal 34, the housing side shield 18 and the cable side shield 35 from water or oil.
For example, when a motor housing of an electric vehicle is used as a housing and the housing-side connector portion 11 is fixed to the outer wall surface of the motor housing, the outside of the motor housing is exposed to rain water, muddy water, car wash water, etc. Is exposed to the lubricating oil of the motor, but water and oil adhere to the casing side terminal 13, the cable side terminal 34, the casing side shield 18 and the cable side shield 35 in the waterproof space S and corrode. Fear can be avoided.

Note that the housing side shield 18 and the cable side shield 35 are covered with the housing side housing 12, the cable side housing 32, and the cable side waterproof rubber 33 and are not exposed to the outside. Even if the terminal is short-circuited to the housing-side terminal 13, the cable-side terminal 34, or the like, it is possible to avoid the possibility of an electric shock from the operator.
Further, since the housing side shield 18 and the cable side shield 35 are waterproofed by being disposed in the waterproof space S, these shields themselves are formed by die casting, for example, to have a waterproof structure without a seam. There is no need. That is, these shields can be easily manufactured at a low cost by press working, and the degree of freedom in designing the shields can be increased.
The potting material 24 is filled in the potting portion 22b of the housing body 22 of the second housing 20 to form a sealing structure in the penetrating portion of the housing-side terminal 13. However, the present invention is not limited to this. A waterproof rubber can be accommodated inside the container-shaped housing body 22, and a sealing structure can be formed in the penetrating portion of the housing-side terminal 13 by this waterproof rubber.

Embodiment 2
In the first embodiment, in order to form a double annular sealing structure between the housing side housing 12 of the housing side connector portion 11 and the wall surface 51 of the housing, the first waterproof rubber 16 and the first waterproof rubber 16 Although two members of the waterproof rubber 17 of 2 are used, a double annular sealing structure can be formed by a one-part sealing member in which these members are integrated.
As shown in FIG. 19, the waterproof connector according to the second embodiment has one casing-side waterproof rubber 61 arranged at the rear end of the casing-side connector section. The casing-side waterproof rubber 61 is an annular and band-shaped member surrounding the rear end portion 13b of the three casing-side terminals 13. The casing-side waterproof rubber 61 has an annular first protrusion 61a on the outer peripheral edge and an annular inner peripheral edge. It has the 2nd protrusion part 61b. Moreover, the opening part 61c is formed in the housing | casing side waterproof rubber 61, and the edge part 18a of the housing | casing side shield is exposed from this opening part 61c.

As shown in FIG. 20, the housing-side connector portion of the waterproof connector according to the second embodiment is fitted into the first housing 19A and the rear end of the first housing 19A and holds the three housing-side terminals 13. The second housing 20A is provided.
The first housing 19A is the same as the first housing 19 of the first embodiment except that an annular step 15c is formed on the rear surface 15a of the flange portion 15 instead of the annular groove 15b. This is the same as the housing 19. The second housing 20A is the same as the second housing 20 in the first embodiment except that an annular step 23c is formed on the rear surface 23a of the flange portion 23 instead of the annular groove 23b. Similar to the second housing 20.

  The step 15c of the flange portion 15 of the first housing 19A and the step 23c of the flange portion 23 of the second housing 20A are flush with each other, and the housing-side waterproof rubber 61 is composed of the first projecting portion 61a. And it arrange | positions on the level | step differences 15c and 23c toward the back with the 2nd protrusion part 61b. The end 18 a of the housing side shield 18 is located in the opening 61 c of the housing side waterproof rubber 61.

As shown in FIG. 21, the housing-side waterproof rubber 61 has an annular and belt-like flat portion 61d, and the first protruding portion 61a is formed on the outer peripheral edge of the flat portion 61d, and the second protruding shape. The part 61b is formed on the inner periphery of the flat part 61d. Moreover, the opening part 61c for exposing the edge part 18a of the housing | casing side shield 18 is each formed in two opposing locations of the flat part 61d.
As shown in FIGS. 22 and 23, the first protruding portion 61a and the second protruding portion 61b are formed thicker than the flat portion 61d.

  Even when such a one-part housing-side waterproof rubber 61 is used, the first projecting portion 61a and the second projecting shape of the housing-side waterproof rubber 61 are obtained by fixing the housing-side connector portion to the wall surface of the housing. The portion 61b is pressed against the wall surface of the housing, and a double annular sealing structure is formed between the housing on the housing side and the wall surface of the housing, as in the first embodiment. At the same time, the end portion 18a of the housing side shield 18 contacts the wall surface of the housing through the opening 61c of the housing side waterproof rubber 61 and is conductively connected to the wall surface of the housing between the double annular sealing structures. .

As a result, as in the first embodiment, a waterproof connector capable of protecting the casing side terminal 13, the casing side shield 18, and the cable side terminal 34 and the cable side shield 35 from water, oil, and the like is realized. .
Further, in the second embodiment, since a double annular sealing structure can be formed by the one-side casing-side waterproof rubber 61, not only the number of parts of the waterproof connector is reduced, but also the casing Assembling work of the housing side connector portion to the head is simplified.

  In the first and second embodiments described above, the harness 41 has the three cables 42 and the housing-side connector portion 11 has the three housing-side terminals 13. However, the present invention is not limited to this. The present invention can be applied to a waterproof connector for connecting one, two, or four or more cables. The number of housing-side terminals corresponding to the number of cables may be arranged in the housing-side connector.

In the first embodiment, all the rear end portions 13b of the three housing side terminals 13 are surrounded by one second waterproof rubber 17, but the plurality of housing side terminals are used as the housing side connector portion. In the case of arrangement, the plurality of housing side terminals may be divided into several groups and surrounded by a second waterproof rubber corresponding to each group. In this case, as the first waterproof rubber disposed outside the second waterproof rubber, one waterproof rubber surrounding all of the plurality of second waterproof rubbers may be used, or the plurality of second waterproof rubbers may be used. A plurality of waterproof rubbers each surrounding the rubber can also be used. In any case, a double annular sealing structure is formed between the housing side housing and the wall surface of the housing by the first waterproof rubber and the second waterproof rubber. The end of the housing side shield needs to contact the wall surface of the housing between the double annular sealing structures.
Similarly in the second embodiment, the plurality of housing-side terminals can be divided into several groups and surrounded by the second projecting portions corresponding to each group.

  DESCRIPTION OF SYMBOLS 1 Cable, 2 Cable side connector part, 3 Case side connector part, 4 Cable side outer housing, 5 Case side outer housing, 6 Waterproof packing, 7 Wire seal, 8, 9 Connector terminal, 11 Case side connector part, 12 Case side Housing, 13 Housing side terminal, 13a Front end portion of housing side terminal, 13b Rear end portion of housing side terminal, 14 Tubular portion, 14a Outer tube portion, 14b Inner tube portion, 14c Front end of outer tube portion, 14d Opening portion, 14e accommodating portion, 15 flange portion, 15a rear surface of flange portion, 15b, 23b groove, 15c, 23c step, 16 first waterproof rubber, 17 second waterproof rubber, 18 housing side shield, 18a end of housing side shield 19, 19A 1st housing, 20, 20A 2nd housing, 21 Waterproof rubber between connectors, 22 Uzing body, 22a opening, 22b potting part, 23 flange part, rear surface of 23a flange part, 24 potting material, 32 cable side housing, 32a front end part of cable side housing, 33 cable side waterproof rubber, 34 cable side terminal, 35 Cable-side shield, 35a Cable-side shield front end, 31 Cable-side connector, 41 Harness, 42 Cable, 43 Cable core, 44 Cable sheath, 45 Braid, 46 Harness sheath, 51 Housing wall, 52 Opening, 61 Housing-side waterproof rubber, 61a first protrusion, 61b second protrusion, 61c opening, 61d flat part, C1, C2 central axis, H mounting hole, S waterproof space.

Claims (9)

By fitting a cable-side connector portion attached to the end of the cable whose outer peripheral portion is covered with a conductive braid into a case-side connector portion attached to the case of the connection object, the cable-side connector portion In the waterproof connector in which the cable side terminal is connected to the housing side terminal of the housing side connector portion,
The housing-side connector portion forms a double sealing structure between the housing-side housing that covers the periphery of the housing-side terminal and holds the housing-side terminal, and the housing-side housing and the wall surface of the housing A housing-side sealing member that covers the periphery of the housing-side terminal, and a housing-side shield that is accommodated in the housing-side housing and contacts the wall surface of the housing between the double sealing structures. Have
The cable side connector portion covers a periphery of the cable side terminal and holds the cable side terminal, and a cable side that forms a sealing structure between the cable side housing and the outer peripheral portion of the cable A sealing member, and a cable-side shield housed in the cable-side housing and connected to the braid of the cable so as to cover the periphery of the cable-side terminal;
An inter-connector sealing member that forms a sealing structure between the housing-side housing and the cable-side housing when the housing-side connector portion and the cable-side connector portion are fitted,
When the housing-side connector portion and the cable-side connector portion are fitted, the wall surface of the housing, the housing-side housing, the cable-side housing, the outer peripheral portion of the cable, the housing-side sealing member, and the cable-side sealing A waterproof connector, wherein a waterproof space surrounded by a stopper member and the connector sealing member is formed, and the cable side shield is connected to the housing side shield in the waterproof space. The housing-side housing includes a first housing formed of an insulator and having an inner tube portion into which the housing-side terminal is inserted and an outer tube portion disposed so as to cover an outer periphery of the inner tube portion. A second housing that holds the casing-side terminal and is formed of an insulator,
The casing-side sealing member includes a first waterproof rubber that forms a first sealing structure between the first housing and a wall surface of the casing, and an inner side of the first sealing structure; The waterproof connector according to claim 1, further comprising a second waterproof rubber that forms a second sealing structure between the second housing and a wall surface of the housing. The housing side terminal penetrates the second housing,
The waterproof connector according to claim 2, wherein the second housing includes a penetrating portion sealing member that forms a sealing structure at a penetrating portion of the housing-side terminal.   The waterproof connector according to claim 3, wherein the through-hole sealing member is formed by potting.   The waterproof connector according to any one of claims 2 to 4, wherein the first waterproof rubber and the second waterproof rubber are integrally formed.   The first waterproof rubber and the second waterproof rubber are integrated by a single waterproof rubber member in which a first protrusion is formed on the outer peripheral edge and a second protrusion is formed on the inner peripheral edge. The waterproof connector according to claim 5. The outer periphery of the cable braid is covered with an outer skin made of an insulator,
The waterproof connector according to claim 1, wherein the cable side sealing member forms a sealing structure between the outer skin and the cable side housing.   The waterproof connector according to claim 1, wherein the inter-connector sealing member is attached to the housing on the housing side. The cable-side connector portion includes a plurality of the cable-side terminals that are attached to end portions of the plurality of cables and that correspond to the plurality of cables and that are covered by the cable-side shield,
The housing side connector portion has a plurality of housing side terminals corresponding to the plurality of cable side terminals and covered by the housing side shield,
The plurality of case-side terminals and the plurality of cable-side terminals corresponding to each other are connected to each other when the case-side connector portion and the cable-side connector portion are fitted to each other. Waterproof connector.