JPH10302880A - Waterproof connector structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof connector structure which ensures waterproof seal by preventing direct water splash. SOLUTION: In this structure, female and male terminals come in contact with each other by fitting a plug part 13 of a connector plug 10 to a fitting recess 4 of a connector socket 1, and a waterproof seal is performed by inserting a front portion of the plug part 13 into an inner periphery part of the waterproof seal member installed in the fitting recess 4. A flange 19 is formed at the outer periphery part of the connector plug 10 to conceal a space between the plug portion 13 and the fitting recess 4 when the plug part 13 is fitted to the fitting recess 4 of the plug portion 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof connector structure for wiring a harness exposed to a wet environment such as an engine room of an automobile.

[0002]

2. Description of the Related Art As a waterproof connector structure for wiring a harness exposed to a wet environment such as an engine room of a car,
As shown in FIG. 7, the connector socket 30 is composed of a connector plug 30 and a connector plug 31. A ring-shaped waterproof sealing member 33 is inserted into the plug fitting recess 32 of the connector socket 30, and the plug fitting recess is formed. Male terminal 34 in 32
Of the contact portion 34A. The connector plug 31 has a plug portion 35 in which the contact portions 36A of the plurality of female terminals 36 are provided.
Is inserted.

[0003] By fitting the plug portion 35 of the connector plug 31 into the plug fitting recess 32 of the connector socket 30, the contact portions 36A and 34A of the female and male terminals 36 and 34 are brought into contact with each other, and the plug is inserted. Insert the tip of the part 35 into the inner periphery of the waterproof seal member 33,
Lip portion 33a formed on the inner periphery of waterproof seal member 33
Is pressed against the outer periphery of the front end of the plug portion 35 to perform a waterproof seal.

[0004]

However, in the above-mentioned conventional waterproof connector structure, the waterproof seal member is usually designed to withstand a static pressure to some extent. Is inserted into the inner peripheral portion of the waterproof seal member 33, the plug portion 35 and the plug fitting concave portion 32 are inserted.
A gap always occurs in the joint portion of the waterproof seal member 33, and the waterproof seal member 33 is directly pressurized by water directly through the gap.

In particular, in an environment such as a lower part of an engine room of an automobile, a high-pressure water of a car washer or water splashing from a tire causes a gap between a mating portion between the plug portion 35 and the plug fitting concave portion 32. There is a problem that the pressurized water directly enters, and the waterproof seal member 33 is directly pressurized to deteriorate durability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a waterproof connector capable of directly preventing water from being applied and ensuring a waterproof seal. It is to provide a structure.

[0007]

According to a first aspect of the present invention, there is provided a waterproof connector structure according to the first aspect of the present invention, wherein a plug portion of a connector plug is fitted into a plug fitting concave portion of a connector socket to form terminals. In a waterproof connector structure in which the plug is in contact with each other and the tip of the plug portion is inserted into the inner peripheral portion of the waterproof seal member provided in the plug fitting concave portion to perform a waterproof seal, the waterproof seal portion is directly exposed to water. Forming a flange portion on the outer peripheral portion of the connector plug, which conceals a gap between the plug portion and the plug fitting concave portion when the plug portion is fitted into the plug fitting concave portion. It is characterized by comprising.

With this configuration, the terminals are brought into contact with each other by fitting the plug into the plug fitting recess, and the waterproof sealing member is pressed against the tip of the plug to perform the waterproof sealing. Since the flange portion hides the gap between the plug portion and the plug fitting concave portion, it directly blocks the outside of the plug fitting concave portion from being exposed to water. For this reason, the waterproofness of the waterproof connector can be ensured.

In order to achieve the above object, a waterproof connector structure according to a second aspect of the present invention is the waterproof connector structure according to the first aspect, wherein an insertion guide is provided on a side surface of a plug portion of the connector plug. At the same time, an insertion guide groove for inserting the insertion guide when the plug is fitted into the plug fitting recess is provided in an inner peripheral portion of the plug fitting recess.

With this configuration, not only can the same effect as that of the first aspect of the present invention be achieved, but also the insertion guide can be inserted into the insertion guide groove when the plug is fitted into the plug fitting recess. Thus, the fitting of the plug portion into the plug fitting recess is made smooth.

In order to achieve the above object, a waterproof connector structure according to a third aspect of the present invention is the waterproof connector structure according to the first or second aspect, wherein the flange portion is formed of the plug portion. At the time of fitting into the plug fitting recess,
The connector socket also serves as an attachment stopper that contacts the front end surface of the connector socket.

With this configuration, not only can the same operation as the above-described invention of claim 1 or 2 be achieved, but also when the plug is fitted into the plug fitting recess, the flange is
The flange portion comes into contact with the front end surface of the connector socket and functions as a stopper.

In order to achieve the above object, in the waterproof connector structure according to the invention of claim 4, the plug portion of the connector plug is fitted into the plug fitting recess of the connector socket so that the terminals come into contact with each other. In addition, in the waterproof connector structure in which the front end of the plug portion is inserted into the inner peripheral portion of the waterproof seal member provided in the plug fitting concave portion to perform the waterproof seal, the waterproof portion that prevents direct waterproofing to the waterproof seal portion is provided. The prevention means is fitted to the plug fitting recess when the plug is fitted to the plug fitting recess at the outer peripheral portion of the plug portion to form a space between the plug fitting recess and the waterproof seal member. The lid is provided with a lid.

With this configuration, the terminals are brought into contact with each other by fitting the plug into the plug fitting recess, and the waterproof seal member is pressed against the tip of the plug to perform the waterproof seal. The lid is fitted into the plug fitting recess to form a space between the plug fitting recess and the waterproof sealing member. For this reason, the waterproofness of the waterproof connector can be ensured.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIGS. 1 to 4 show Embodiment 1 of a waterproof connector structure according to the present invention.

FIG. 1 is a perspective view of a first embodiment of a waterproof connector structure according to the present invention in a connected state, FIG. 2 is a perspective view of a connector socket having the same waterproof connector structure, and FIG. 3 is a connector plug having the same waterproof connector structure. FIG. 4 is a sectional view of the waterproof connector structure in a separated state.

The waterproof connector structure according to the present invention includes a connector socket 1 and a connector plug 10. The connector socket 1 has a socket housing 2, and the socket housing 2 includes a terminal mounting portion 3 and a plug. And a fitting recess 4. A ring-shaped waterproof seal member 5 is fitted in the plug fitting recess 4, and a left and right side wall portion 4 a of the inner peripheral surface of the plug fitting recess 4.
The insertion guide groove 6 is formed in 4b.

The terminal mounting portion 3 is provided with a plurality of male terminal mounting holes 7, and male terminals 8 are mounted in these male terminal mounting holes 7, respectively. Harnesses 9 are connected, and waterproof plugs 9A are formed in these harnesses 9, and the waterproof plugs 9A are fitted in a liquid-tight manner at the rear portion of the male terminal mounting hole 7. The contact portion 8A of the male terminal 8 protrudes into the plug fitting recess 4.

The connector plug 10 has a plug housing 11.
Has a terminal mounting part 12 and a plug part 13. The terminal mounting portion 12 is provided with a plurality of female terminal mounting holes 14.
5 are mounted, and these female terminals 15 are connected to the harness 1.
6 are connected, and these harnesses 16 have a waterproof plug 1
7 are formed, and the waterproof plug 17 is
Liquid-tightly fitted to the rear. A plurality of female terminal holes 18 connected to the female terminal mounting holes 14 are provided in the end face portion 13a of the plug portion 13.
The contact portion 15A of the female terminal 15 is inserted into the inside 8.

On the outer peripheral portion of the plug housing 11, a flange portion 19 is located at a boundary between the terminal mounting portion 12 and the plug portion 13.
A pair of rib-shaped insertion guides 20 are formed on the left and right side surfaces of the plug portion 13 so as to be integrated with the plug portion 13 and the flange portion 19, respectively, so as to be parallel to the axial direction of the plug portion 13. It is formed. When the plug portion 13 is fitted into the plug fitting concave portion 4, the flange portion 19 is
And a gap between the plug fitting recess 4 and the waterproof sealing member 5.
This constitutes a water-prevention means for directly blocking water from flowing into the water.

Next, the connection between the connector socket 1 and the connector plug 10 will be described.

The plug portion 13 of the connector plug 10 is fitted into the plug fitting recess 4 of the connector socket 1. In this case, the insertion guide 20 of the connector plug 10 is inserted into the insertion guide groove 6 of the connector socket 1 so that the plug 13 is smoothly fitted into the plug fitting recess 4.

When the plug portion 13 is fitted into the plug fitting concave portion 4, the contact portion 8A of the male terminal 8 is inserted into the contact portion 15A of the female terminal 15 and comes into contact with each other.
The tip portion of the plug portion 13 is inserted into the inner peripheral portion of the waterproof seal member 5, and the lip portion 5a formed on the inner periphery of the waterproof seal member 5 is pressed against the outer periphery of the front portion of the plug portion 13 to perform a waterproof seal. .

The flange 19 abuts against the end face 4 A of the connector socket 1 on the side of the plug fitting recess 4, concealing the gap between the plug 13 and the plug fitting recess 4, and Shut off water directly. For this reason, the waterproof seal of the waterproof connector can be secured. Further, the flange portion 19 is provided with the plug fitting concave portion 4 of the connector socket 1.
By contacting the side end face 4A, the function of the stopper comes to be exhibited.

(Second Embodiment) FIGS. 5 and 6 show a second embodiment of the waterproof connector structure according to the present invention.

FIG. 5 is a partially omitted cross-sectional view of a waterproof connector structure according to a second embodiment of the present invention, and FIG. 6 is a partially omitted cross-sectional view of the waterproof connector structure in a coupled state. is there.

This waterproof connector structure has a connector socket 21 and a connector plug 22. The connector socket 21 does not have the insertion guide groove 6, and the other structure is the same as that of the first embodiment. Since the configuration is the same as that of the connector socket 1, the same reference numerals are given and the description is omitted.

The connector plug 22 is not provided with the flange portion 19 and the insertion guide 20, and the outer periphery of the plug housing 11 is located at the boundary between the terminal mounting portion 12 and the plug portion 13 so that the plug housing A lid portion 23 is formed over the entire circumference of the eleventh portion. The lid 23 is connected to the plug 1
3 is fitted into the plug fitting recess 4,
To form a space portion 24 between the plug and the waterproof seal member 5, concealing the gap between the plug portion 13 and the plug fitting concave portion 4, and shutting off water directly to the waterproof seal member 5. This constitutes a means for preventing water from getting wet. The other configuration is the same as that of the connector plug 10 of the first embodiment, and thus the same reference numerals are given and the description is omitted.

Then, the plug portion 13 of the connector plug 22 is fitted into the plug fitting recess 4 of the connector socket 21. In this case, the contact portion 8A of the male terminal 8 is inserted into the contact portion 15A of the female terminal 15 and comes into contact with each other, and the tip of the plug portion 13 is inserted into the inner peripheral portion of the waterproof seal member 5, and the waterproof seal member The lip 5a formed on the inner periphery of the plug 5 is pressed against the outer periphery of the front end of the plug 13 to perform a waterproof seal. Further, the lid portion 23 is fitted into the plug fitting concave portion 4 of the connector socket 1 to form a space 24 between the lid portion 23 and the waterproof seal member 5, and the plug portion 13 is plug-fitted. The gap with the recess 4 is concealed so that the plug fitting recess 4 is not directly exposed to water. For this reason, the waterproof seal of the waterproof connector can be secured.

[0031]

As described above, according to the waterproof connector structure of the first aspect of the present invention, the terminals are brought into contact with each other by the fitting of the plug portion into the plug fitting concave portion, and the tip of the plug portion is formed. The waterproof seal member presses against the portion to perform a waterproof seal, but at this time, the flange portion hides a gap between the plug portion and the plug fitting concave portion, so that the external empty direct water is exposed to the plug fitting concave portion. Cut off. For this reason, the waterproofness of the waterproof connector can be ensured.

Further, according to the waterproof connector structure of the invention of claim 2, not only the same effect as the effect of the invention of claim 1 can be obtained, but also when the plug part is fitted into the plug fitting recess. By inserting the insertion guide into the insertion guide groove, the plug portion is smoothly fitted into the plug fitting recess.

According to the waterproof connector structure of the third aspect of the present invention, not only can the same effects as those of the first or second aspect of the present invention be obtained, but also the plug fitting recess of the plug portion can be provided. At the time of fitting, the flange contacts the front end face of the connector socket, and the flange functions as a stopper.

According to the waterproof connector structure of the fourth aspect of the present invention, the terminals are brought into contact with each other by fitting the plug into the plug fitting recess, and the waterproof sealing member is provided at the tip of the plug. At this time, the waterproof seal is performed by pressing, but at this time, since the lid is fitted into the plug fitting recess and a space is formed between the cover and the waterproof seal member, the plug directly fits into the recess. Shut off water. For this reason, the waterproof seal of the waterproof connector can be secured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a combined state of a first embodiment of a waterproof connector structure according to the present invention.

FIG. 2 is a perspective view of a connector socket having the waterproof connector structure.

FIG. 3 is a perspective view of a connector plug having the waterproof connector structure.

FIG. 4 is a sectional view of the waterproof connector structure in a separated state.

FIG. 5 is a partially omitted cross-sectional view of a waterproof connector structure according to a second embodiment of the present invention in a separated state.

FIG. 6 is a cross-sectional view of the waterproof connector structure with a part thereof partially omitted in a connected state.

FIG. 7 is a sectional view of a conventional waterproof connector structure in a separated state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector socket 4 Plug fitting concave part 5 Waterproof seal member 8 Male terminal 10 Connector plug 13 Plug part 15 Female terminal 19 Flange part (waterproofing means) 23 Lid part 24 Space part

Claims (4)

[Claims] 1. A waterproof seal member in which a plug portion of a connector plug is fitted into a plug fitting recess of a connector socket to bring terminals into contact with each other and a tip of the plug portion is provided in the plug fitting recess. In a waterproof connector structure in which a waterproof seal is inserted by inserting into an inner peripheral portion, a waterproofing preventing means for directly preventing the waterproof seal portion from being wetted is provided on an outer peripheral portion of the connector plug with the plug fitting concave portion of the plug portion. A waterproof connector structure, wherein a flange portion is formed to cover a gap between the plug portion and the plug fitting concave portion when the connector is fitted to the connector. 2. An insertion guide is provided on a side surface of a plug portion of the connector plug, and the insertion guide is provided on an inner peripheral portion of the plug fitting concave portion when the plug portion is fitted into the plug fitting concave portion. The waterproof connector structure according to claim 1, wherein a groove portion for an insertion guide into which is inserted is provided. 3. The waterproofing device according to claim 1, wherein said flange portion also serves as an abutment stopper which abuts on a front end surface of said connector socket when said plug portion is fitted into said plug fitting recess. Connector structure. 4. A waterproof seal member having a plug portion of a connector plug fitted into a plug fitting concave portion of a connector socket so that terminals are brought into contact with each other, and a tip portion of the plug portion provided in the plug fitting concave portion. In a waterproof connector structure in which a waterproof seal is inserted by being inserted into an inner peripheral portion, a waterproof prevention means for directly preventing the waterproof seal portion from being wetted is provided on an outer peripheral portion of the plug portion with the plug fitting concave portion of the plug portion. A waterproof connector structure comprising: a lid that is fitted into the plug fitting recess when forming the waterproof sealing member to form a space between the plug and the waterproof sealing member.