JP3229741B2 - Waterproof connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof connector provided with a seal member at a fitting portion between male and female housings.

[0002]

2. Description of the Related Art Conventionally, as this kind of waterproof connector,
For example, Japanese Utility Model Application Laid-Open No. 61-60478 and Japanese Utility Model Application Laid-Open No. 61-6
One disclosed in Japanese Patent No. 0479 is known. In this conventional waterproof connector, for example, as shown in FIG. 7, a seal member 3 is fitted to the outside of a protruding portion 2 inside a female housing 1 and a locking member provided on an inner peripheral surface of the seal member 3. The sealing member 3 is locked to the housing 1 by engaging the locking protrusion 5 provided on the outer periphery of the protrusion 2 with the concave portion 4.

[0003]

However, in the above-described conventional example, the sealing member 3 is fitted outside the projecting portion 2 and the locking concave portion 4 and the locking projection 5 are merely engaged. However, the locking state cannot be visually recognized from the front, and the height of the locking projections 5 is small.

An object of the present invention is to provide a waterproof connector which solves the above-mentioned problems, makes it possible to visually confirm the engagement state of the seal member with respect to the housing, and improves the engagement force between the seal member and the housing. It is in.

[0005]

According to the present invention, there is provided a waterproof connector according to the present invention, wherein a substantially cylindrical seal member is mounted on a central protruding portion of a housing, and a side portion is provided on a back side of the seal member. And a projection is provided on the central protruding portion so as to penetrate through the through hole and be exposed on the opposite side.

[0006]

In the waterproof connector having the above configuration,
When the seal member is mounted on the housing, the protrusion of the housing fits into the through hole of the seal member, and the tip of the protrusion projects from the through hole.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 shows, for example, a female housing 11.
FIG. 2 is a front view showing a state in which the seal member 12 is attached to
FIG. 3 is a sectional view taken along line AA of FIG.
1 is a front view, and FIG. 4 is a sectional view taken along line BB of FIG. The housing 11 is formed in a substantially rectangular cylindrical shape from a synthetic resin having electrical insulation.
Inside the protruding portion 13 provided at the center of the device 1, two terminal accommodating holes 14 for accommodating connection terminals (not shown) are formed in two rows. Outside the protruding part 13, the rising rear wall 1
An outer peripheral wall 16 is provided through the space 5, and a space 17 is provided between the projecting portion 13 and the outer peripheral wall 16 in which a housing of a mating connector (not shown) is fitted together with the seal member 12. On both sides of the protruding portion 13, pedestals 18, 19 are provided in front of the rising rear wall 15.
Projections 20 and 21 are provided on the front part of the upper surface of 9, respectively.

On the other hand, the seal member 12 is formed from an elastic material such as synthetic rubber into a substantially rectangular cylindrical shape as shown in FIG. Has been established. The inner diameter of the body 31 is made smaller than the outer diameter of the protruding portion 13, and a plurality of rows of corrugated ridges 31 a and 31 b for improving the waterproof effect are provided on the inner and outer circumferences of the body 31. . First grooves 33, 34 into which the pedestals 18, 19 of the protruding portion 13 are fitted are formed on the inner periphery of the rear end of the body portion 31, and further communicate with these first grooves 33, 34, respectively. Second grooves 35 and 36 in which the projections 20 and 21 of the protruding portion 13 are fitted are formed in the flange portion 32, respectively. Here, the front walls of the second grooves 35 and 36 have openings 37 and
38, the projections 20, 21 fitted in the grooves 35, 36
Is exposed from the openings 37 and 38.

The heights of the projections 20 and 21 slightly protrude from the outer periphery of the ridge 31b of the seal member 12 so that
Through the first groove 3
3, 34 and the depths of the second grooves 35, 36
9 and the projections 20 and 21 have a depth that can be completely accommodated, respectively. The thickness of the flange portion 32 is such that the rear end surface of the flange portion 32 is slightly pressed against the rising rear wall 15 by the projections 20 and 21.

When the seal member 12 is mounted on the housing 11, the flanges 32 of the seal member 12 are directed rearward, and the openings 37 and 38 of the seal member 12 are inserted into the housing 1.
The seal member 12 is fitted to the outside of the protrusion 13 in a state corresponding to the protrusions 20 and 21, respectively. When the seal member 12 is pushed in until the rear end face of the flange portion 32 comes into contact with the rising rear wall 15, the pedestals 18, 19 and the projections 20, 2
1 fits into the first grooves 33 and 34 and the second grooves 35 and 36, respectively, and the front faces of the projections 20 and 21
Exposure from 7, 38.

FIG. 6 is a sectional view of the second embodiment, in which the locking force between the housing 41 and the sealing member 42 is increased. That is, the protrusions 50, 5
On the rear end surface of the top of the first member 2, second protrusions 52 and 53 are provided rearward, respectively, and the second groove 6 of the seal member 42 is provided.
Third grooves 67, 68 for fitting the second projections 52, 53 are provided on the rear walls of the fifth and the 66, respectively.

Thus, the second embodiment has the same operation and effect as the first embodiment, and also has the second protrusion 5.
Since the grooves 2 and 53 are fitted into the third grooves 67 and 68, respectively, the locking force between the housing 41 and the seal member 42 can be further improved.

[0013]

As described above, in the waterproof connector according to the present invention, since the projection of the housing is fitted into the through hole of the seal member and protrudes to the opposite side, the seal member can be securely locked to the housing. In addition, since the projection of the housing is exposed from the through hole, the engagement state of the seal member can be visually recognized.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment.

FIG. 2 is a sectional view taken along line AA.

FIG. 3 is a front view of a housing.

FIG. 4 is a sectional view taken along line BB.

FIG. 5 is a sectional view of a seal member.

FIG. 6 is a sectional view of the second embodiment.

FIG. 7 is a sectional view of a conventional example.

[Explanation of symbols]

 11, 41 Housing 12, 42 Sealing member 13 Projection 20, 21, 50, 51 Projection 31 Body 32 Flange 33, 34 First groove 35, 36, 65, 66 Second groove 37, 38 Opening 52, 53 second protrusion 67, 68 third groove

Continuation of the front page (56) References JP 5-11354 (JP, U) JP 7-94234 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13 / 52

Claims (2)

(57) [Claims] 1. A substantially cylindrical seal member is mounted on a central protruding portion of a housing, a through hole is provided on the back side of the seal member toward the side, and the through hole is penetrated through the central protruding portion. And a projection exposed on the opposite side. 2. A seal is provided with a flange on a side where the projection is exposed, a groove in which the projection is fitted through the through hole, and a tip of the projection exposed on the near side. The waterproof connector according to claim 1, further comprising an opening that allows the connector to be opened.