JP3019762B2 - Waterproof rubber ring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a waterproof rubber ring.

[0002]

2. Description of the Related Art In a conventional connector or the like, a hood portion is formed on one of a male connector housing and a female connector housing which respectively hold a plurality of terminal fittings, and the other is inserted into the hood portion. Waterproof with a ring-shaped rubber seal interposed. However, in such a case, if even a part of the water leaks from the rubber seal, all the terminal fittings are flooded. For this reason, there has been a configuration in which a tubular portion and an opening through which the tubular portion can be inserted are formed for each pair of terminal fittings, and a rubber seal is interposed for each private room.

[0003]

In the above-mentioned conventional waterproof rubber ring, although it is possible to prevent water leakage from one location from immediately entering another terminal fitting accommodating chamber, it is also possible to prevent such one location from being flooded. There was a problem that I wanted to do. The present invention has been made in view of the above problems, and an object of the present invention is to provide a waterproof rubber ring capable of exhibiting a more complete waterproof performance.

[0004]

In order to achieve the above object, according to the present invention, a cylindrical projecting portion of a first member is inserted into an opening of a second member and an inner peripheral surface of the opening is formed. And a watertight structure in which a ring-shaped seal member is interposed between the outer peripheral surface of the projecting portion and the outer peripheral surface of the projecting portion, wherein the first member has a plurality of projecting portions and the second member has a plurality of projecting portions. The first sealing member further includes a cylindrical first sealing portion surrounding the periphery of each protruding portion to form a waterproof surface on an inner peripheral surface and an outer peripheral surface; A second seal portion having one end connected to the surface and a waterproof surface formed on the outer peripheral surface,
The opening surface of the second member is provided with a dish-shaped concave portion into which the second seal portion can be inserted to form a watertight surface at a peripheral edge portion. According to a second aspect of the present invention, in the waterproof rubber ring according to the first aspect, after attaching the first seal portion, a cap-shaped retaining member is attached to a tip of the protruding portion to prevent the same from coming off. The rear end edge of the member comes into contact with the front end surface of the first seal portion to prevent the waterproof rubber ring from coming off.

[0005]

According to the first aspect of the present invention, a plurality of projecting portions are formed on the first member, and a plurality of openings are similarly formed on the second member. As they face each other and approach, each protruding part enters each opening. Here, the seal member attached to the first member includes a cylindrical first seal portion that forms a waterproof surface on the inner peripheral surface and the outer peripheral surface around the periphery of each projecting portion, and a surface at one end thereof. And attached to the first member from the side connected in the shape. When approaching to the second member side in this state, the first sealing member is sandwiched between the projecting member and the opening as each projecting portion enters the opening to form a watertight surface. On the other hand, the seal member also has a second seal portion on the outer peripheral surface, and when the first member is brought closer to the second member side, the second seal portion on the outer peripheral surface is in a dish-shaped recess in the second member. And the second seal portion forms a watertight surface between the first member and the second member. In the invention according to claim 2 configured as described above, when the cap-shaped retaining member is attached from the tip of the projecting portion after the first seal portion is attached,
The protruding portion expands in the radial direction on the distal end side, and the front end surface of the cylindrical first seal portion abuts on the rear end edge of the retaining member and does not come off.

[0006]

As described above, according to the present invention, the first seal portion forms a watertight surface for each of the individual chambers, and the second seal portion is integrally formed between the first member and the second member. A waterproof rubber ring capable of forming a watertight surface and exhibiting more complete waterproof performance can be provided. Further, since the first seal portion and the second seal portion are integrated, the trouble of disposing the seal member for each private room can be reduced. Further, in the related art, it is necessary to prevent the seal portion between the connector housings and the seal portion of each of the individual chambers from coming off. According to the invention according to claim 2, the first seal portion is prevented from coming off. As a result, the integral second seal portion can also be prevented from coming off, and it is not necessary to individually prevent the second seal portion from coming off. In particular, since a cap-shaped retainer that double-locks the terminal fittings may be attached to the protruding portion, the double-locking and the retaining member can also be used by attaching such a retainer.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway perspective view showing a female connector to which a waterproof rubber ring according to an embodiment of the present invention is applied, and FIG. 2 is an exploded perspective view. FIG. 3 shows the male connector in a partially cutaway perspective view. In each connector,
Only the tips that are joined together are shown. In FIG. 1, the female connector 10 has two cylindrical portions 11 and 11 for holding female terminal fittings (not shown), respectively.
The male connector 20 is provided with two openings 21 and 21 into which the tubular portions 11 and 11 can be inserted. The tubular portions 11 enter the openings 21 when they are combined with each other as described later. Then, the female terminal fitting and the male terminal fitting are fitted and connected. At this time, a sealing member 30 is interposed between the female connector 10 and the male connector 20 to form a watertight surface at a predetermined position described later.

In this embodiment, the two cylindrical portions 1
1, 11 and two openings 21 and 21 are formed, but the number and arrangement are not particularly limited. For example, as shown in FIG. 4 and FIG. Can be changed. Further, it is not always necessary to provide one terminal fitting for each of the cylindrical portion 11 and the opening 21, and a plurality of terminal fittings may be mounted and united as one group. I do not care. Further, each of the connectors 10 and 20 does not need to be a single connector housing, and may be formed integrally with a casing for accommodating an electric device, for example.

One sealing member 30 is mounted on the female connector 10, and two cylindrical individual chamber sealing portions 31 are formed corresponding to the two cylindrical portions 11. Each tubular part 11
Has a large diameter at the root side and a slightly small diameter from the middle to the tip side. Form a surface. In the present embodiment, the private chamber seal portion 31 constitutes a first seal portion. On the other hand, a cap-shaped retainer 11a can be attached to the distal end of the cylindrical portion 11 with the private chamber seal portion 31 attached so that the outer diameter is almost the same as the root side. That is, after the sealing member 30 having the two private chamber sealing portions 31 is put on the two cylindrical portions 11, the cap-shaped retainer 11 is formed.
a, 11a, the private room seal portion 31,
31 is prevented from falling out along the cylindrical portions 11 and 11. In addition, each retainer 11a also serves to double-lock so as to enter the inside of the cylindrical portion and prevent the terminal fitting inside from coming out. When the cylindrical portion 11 enters the opening 21, the private chamber seal portion 31 is in close contact with the inner peripheral surface of the opening 21,
As a result, a watertight surface is formed between the outer peripheral surface of the cylindrical portion 11 and the inner peripheral surface of the opening 21.

On the other hand, the end portions of the individual chamber seal portions 31, 31 are connected and spread in a plane. The outer peripheral surface of the connecting portion is also a seal portion 32 having a lip formed. The male connector 20 is further enclosed from the outer peripheral side by the opening surfaces of the openings 21 and 21 corresponding to the outer peripheral surface of the seal portion 32. A hood portion 22 is provided. This hood section 22
Corresponds to the thickness of the seal portion 32 and has such a size as to be in close contact with the outer diameter, and corresponds to a dish-shaped concave portion. Further, the seal portion 32 constitutes a second seal portion.

As described above, the cylindrical portion 11 enters into the opening 21 and the seal portion 32
Penetrates into the hood portion 22 and closely adheres to the inner peripheral surface of the hood portion 22 to form a watertight surface. Therefore, the female connector 1
One watertight surface is formed at the seal portion 32 between the male connector 0 and the male connector 20, and further, inside the private room seal portion 31 forms a watertight surface for each private room. The surface is formed to improve the waterproof performance. The female connector 10 is provided with a cylindrical outer tube 12 that can be inserted together with the hood 22.

In the present embodiment, a private chamber seal portion 31 is formed as a first seal portion for covering the cylindrical portion 11, and a rear end of the private chamber seal portion 31 is planarly connected to an outer peripheral surface as a second seal portion. Although the seal portion 32 is formed, the shape of each seal surface may be an existing lip or the like. In addition, each private room seal part 31 and seal part 3
It is not necessary for the surface to be connected to 2 to exhibit particularly waterproof performance, and it may be a perforated shape. Further, a support wall may be formed on the inner wall surface of the female connector 10 in order to hold it from inside the seal portion 32.

As described above, when the plurality of tubular portions 11 of the female connector 10 are inserted into the plurality of openings 21 of the male connector 20, the individual chamber seals that cover the respective tubular portions 11 and form a watertight surface. The sealing portion 3 is formed on the outer peripheral surface while connecting the end of the private chamber
2 and the hood portion 22 that covers the outer peripheral surface of the seal portion 32 is formed on the male connector 20 side, so that the first-stage watertight surface is formed between the female connector 10 and the male connector 20. Is formed, a watertight surface is formed for each individual room, and more waterproof performance can be exhibited.

FIGS. 6 to 10 show a connector in which the seal member 60 can be easily mounted.
In this example, on the female connector 40 side, a hood-shaped opening 42 is formed at the tip of a cylindrical body 41 that accommodates the female terminal fitting, and a male terminal fitting 51 is formed on the male connector 50 side. A stepped cylindrical portion 52 is formed at the root.
A ring-shaped seal member 60 can be mounted in each opening 42, and an engagement hole 42 a communicating with the inside and outside is formed on a peripheral wall surface of the opening 42 to prevent the seal member 60 from coming off. On the outer peripheral surface, a projection 61
Is formed. At the female connector 40 side, a retainer 43 is inserted through the opening 42 to double-lock the internal female terminal fitting.

When the two connectors 40 and 50 are combined,
When the cylindrical portion 52 at the root of the male terminal fitting 51 enters the hood-shaped opening 42, a sealing member 6 is provided between the two.
0 intervenes to form a watertight surface. Generally, since the seal member is mounted on the back side or the base side in the hood, it is difficult to perform the mounting operation. However, in this example, the sealing member 60
Is mounted in the opening 42 at the distal end of the cylindrical body 41 that accommodates the female terminal fitting, thereby facilitating the mounting operation.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view of a female connector to which a waterproof rubber ring according to an embodiment of the present invention is applied.

FIG. 2 is an exploded perspective view of the female connector.

FIG. 3 is a partially cutaway perspective view of a male connector corresponding to the female connector.

FIG. 4 is a partially cutaway perspective view of a female connector according to a modification.

FIG. 5 is a partially cutaway perspective view of a male connector corresponding to the female connector.

FIG. 6 is a partially broken perspective view of a female connector to which another waterproof rubber ring is applied.

FIG. 7 is an exploded perspective view of the female connector.

FIG. 8 is a partially broken perspective view of a male connector corresponding to the female connector.

FIG. 9 is a partially broken perspective view of a female connector according to the modification.

FIG. 10 is a partially broken perspective view of a male connector corresponding to the female connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Female side connector 11 ... Cylindrical part 20 ... Male side connector 21 ... Opening 22 ... Hood part 30 ... Seal member 31 ... Private room seal part 32 ... Seal part

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kenji Tsuji 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. (56) References JP-A-61-179077 (JP, A) JP-A-55 JP-A-58-186178 (JP, A) JP-A-4-87178 (JP, U) JP-A-3-91678 (JP, U) JP-A-1-5376 (JP, U) (Japanese) Shokai 51-68391 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 13/52

Claims (2)

(57) [Claims] 1. A cylindrical projecting portion of a first member is inserted into an opening of a second member, and a ring-shaped sealing member is interposed between an inner peripheral surface of the opening and an outer peripheral surface of the projecting portion. The first member includes a plurality of the protruding portions and the second member also includes a plurality of the openings, and the sealing member of the first member includes a plurality of protruding portions. A cylindrical first seal portion surrounding the peripheral edge of the portion and forming a waterproof surface on the inner peripheral surface and the outer peripheral surface, and a first surface having one end connected to each of the first seal portions and having a waterproof surface formed on the outer peripheral surface. A waterproof rubber ring, comprising: two seal portions; and a dish-shaped recess in which the second seal portion can be inserted to form a water-tight surface at a peripheral edge portion on an opening surface of the second member. 2. The waterproof rubber ring according to claim 1, wherein a cap-shaped retaining member is attached to a tip of the protruding portion after the first sealing portion is attached, and a rear end of the retaining member is attached. A waterproof rubber ring, characterized in that the edge is in contact with the front end surface of the first seal portion to prevent the waterproof rubber ring from coming off.