JPH1012319A - Wiring connector for automatic transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of effectively preventing oil leakage by a relatively compact constitution. SOLUTION: This connector 30 insert-mold or press in a front portion partitioning wall 35 plural relay terminals 17 pressure-contacting and holding a conductor portion 19 of a wire 20 by means of a pinching portion 18 against a cavity-shaped housing 31 having the front portion partitioning wall 35 integrally molded therein so that a tip end part is exposed along an axial core direction of the cavity-shaped housing 31. And, a rear portion partitioning wall 21 transparently provided with a wire lead-out pore 22 corresponding to the relay terminal 17 fixed to the front portion partitioning wall 35 is engagingly attached to a rear portion opening area of the cavity-shaped housing 31, while a soluble synthetic resin member 39 is engagingly attached to an inside of a recess portion 38 provided on a surface of the front portion partitioning wall 35 positioned on a side of a hood portion 31a, and oil leakage is effectively prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring connector for preventing leakage of oil that has penetrated inside an electric wire introduced into an oil case of an automatic transmission or the like.

[0002]

2. Description of the Related Art A main part of a typical example of a conventional wiring connector for an automatic transmission improved to prevent oil from leaking from the inside of an oil case to the outside through a gap in a conductor portion (wire harness) of an electric wire. The longitudinal section is shown in FIG.

Attached to a through hole 2 penetrated through a wall 1 of an oil case of an automatic transmission via an O-ring 14 and a flange portion 12 fitted in a groove 13 formed on the outer peripheral surface thereof. The main structure of the conventional connector 10 thus obtained is as follows. That is, the main part of the conventional connector 10 is a hollow housing.
A front partition wall 15 through which a plurality of terminal lead-out holes 16 are inserted so as to be fitted in the housing 11;
A plurality of relay terminals 17 press-fitted into the terminal lead-out holes 16 of the front partition wall 15 so that the front ends of the relay terminals 17a are exposed along the axial direction of the hollow housing 11; A plurality of wires with the conductor 19 crimped and held by the part 18
20; a rear partition wall 21 through which a wire lead-out hole 22 corresponding to the relay terminal 17 fixed to the front partition wall 15 can be fitted into the rear opening area of the hollow housing 11; A synthetic resin member that is injected into the compartment 23 defined by the hollow housing 11 and the front and rear compartment walls 15 and 21 through the terminal lead-out hole 16 of the compartment wall 15 and liquid seals around the conductor 19 and the relay terminal 17. 24;

[0004]

However, the synthetic resin member 24, for example, epoxy resin, which is injected into the compartment 23 as described above, has a relatively narrow arrangement around the relay terminal 17 and the compartment 23. It is necessary to repeat the filling several times, so the filling workability is inferior and the relay terminals 17
In this case, the adhesion of the synthetic resin member 24 to the resin was apt to occur, and as a result, the disadvantage of oil leakage was not completely solved.

On the other hand, JP-A-6-223903 proposes a wiring connector for an automatic transmission in which a relay terminal is insert-molded so as to be embedded in a connector housing. Since the expansion coefficients are significantly different, it has been difficult to avoid the occurrence of poor adhesion between the two members.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wiring connector for an automatic transmission which can solve the above-mentioned problems of the prior art and can effectively prevent oil leakage with a relatively compact structure. Things.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
A hollow housing having a front partition wall integrally formed so as to be orthogonal to an axis inside thereof, which is a wiring connector fitted into a through hole provided in a case wall of an automatic transmission. A plurality of relay terminals which are insert-molded or press-fitted into the front partition wall so that the front end of the relay terminal is exposed from the front partition wall to the hood along the axial direction of the hollow housing; A plurality of electric wires, the conductors of which are crimped and held by the holding portion, and an electric wire lead-out hole corresponding to the relay terminal fixed to the front partition wall are penetrated and fitted into the rear opening area of the hollow housing. A possible rear partition wall, a solubilized synthetic resin member that can be fitted in a concave portion provided on the surface of the front partition wall located on the hood portion side, and the solubilized synthetic resin fitted in the concave portion. Heat and melt the resin member The is achieved by a wiring connector for an automatic transmission, characterized in that to enable the gap of the liquid seal within the relay terminals and around or conductor section.

Further, the object of the present invention is achieved by a wiring connector for an automatic transmission, characterized in that the solubilized synthetic resin member enables liquid sealing around the relay terminal and in a gap in the conductor portion. .

Further, the object of the present invention is achieved by a wiring connector for an automatic transmission, wherein the solubilized synthetic resin member is made of an epoxy resin.

In the wiring connector for an automatic transmission according to the present invention, a conductor portion of an electric wire is held by a holding portion with respect to a hollow housing having a front partition wall integrally formed so as to be orthogonal to an axis inside. The plurality of crimped and held relay terminals are insert-molded or press-fitted into the front partition wall so that the tips of the relay terminals are exposed from the front partition wall to the hood along the axial direction of the hollow housing, A rear partition wall having a wire lead-out hole corresponding to the relay terminal fixed to the front partition wall is fitted into a rear opening area of the hollow housing, while a front partition positioned on the hood portion side. Since the solubilized synthetic resin member is fitted in the concave portion provided on the surface of the wall, the molten solubilized synthetic resin member fitted in the concave portion is heated and melted so as to surround the relay terminal and / or in the conductor portion. of Efficiency the gap well and effectively liquid seal.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the wiring connector for an automatic transmission according to the present invention will be described in detail below with reference to the accompanying drawings. The wiring connector 30 for an automatic transmission according to the present invention shown in FIG. 1 is common to the conventional connector 10 shown in FIG. 2 with respect to the relay terminal 17, the holding portion 18, the conductor 19, and the electric wire 20. The symbol of is quoted in common.

The connector 30 of the present invention is fitted into a through hole 2 provided through a wall 1 of an oil case of an automatic transmission, and is integrally formed therein so as to be orthogonal to an axis. A plurality of relay terminals 17 holding and crimping the conductor portion 19 of the electric wire 20 by the holding portion 18 with respect to the hollow housing 31 having the front partition wall 35, and the front end portions thereof from the front partition wall 35 to the hood portion 31a. Is inserted or press-fitted into the front partition wall 35 so that is exposed along the axial direction of the hollow housing 31, and the wire lead-out hole 22 corresponding to the relay terminal 17 fixed to the front partition wall 35 is provided. The rear partition wall 21 is fitted in the rear opening area of the hollow housing 31, while the solubilized synthetic resin member 39 is fitted in a concave portion 38 provided on the surface of the front partition wall 35 located on the hood 31a side. It is made up of

The feature of the connector 30 of the present invention is that, as described above, the solubilized synthetic resin member 39 is fitted into the concave portion 38 provided on the surface of the front partition wall 35 located on the hood portion 31a side. More specifically, a solubilized synthetic resin member 39 formed and solidified in advance in a size that can be fitted into the concave portion 38 and having a terminal lead-out hole 39a through which the distal end portions of the plurality of relay terminals 17 can be inserted. Is attached to a predetermined position in the final step of assembling the connector 30 and then heated and melted at a specified temperature and time.

The heat-melted solubilized synthetic resin member 39 is
After passing through the filling hole 40 penetrated through the front partition wall 35, the space inside the conductor portion 19 from around the relay terminal 17 and into the partition chamber 37 defined by the hollow housing 31 and the front and rear partition walls 35 and 21. Injection,
Will be filled. In particular, the solubilized synthetic resin member 39 is a relay terminal.
Since the complex shape around the tip of 17 is formed and solidified to the desired size and shape in advance, it is possible to sufficiently cover minute gaps, corners, etc. with only a simple insertion operation into the recess 38. it can. Note that, depending on the heating and melting conditions of the solubilized synthetic resin member 39, a slight difference due to a difference in linear expansion coefficient between the distal end portion of the relay terminal 17 and the front partition wall 35 that are in close contact by insert molding or press fitting is caused. A void 36 occurs,
The filling efficiency can be increased through the space 36.
However, this gap 36 is minute, does not reach a size that induces oil leakage at a normal connector peripheral operating temperature, and does not change the substantial holding force of the front partition wall 35 to the relay terminal 17. .

The number of the filling holes 40 is appropriately increased or decreased, and in some cases, the solubilized synthetic resin member is formed only by the space 36.
It can be modified to perform 39 fillings.

[0016]

The wiring connector 30 for an automatic transmission according to the present invention configured as described above has the following novel effects. That is, the wiring connector 30 for an automatic transmission according to the present invention is provided with the oil case wall 1 of the automatic transmission.
A hollow housing 31 having a front partition wall 35 integrally fitted so as to be perpendicular to the axis inside the through hole 2 penetrated through the A plurality of relay terminals 17 crimping and holding 20 conductors 19
Is inserted or press-fitted into the front partition wall 35 from the front partition wall 25 to the hood portion 31a so that the distal end thereof is exposed along the axial direction of the hollow housing 31. It has become possible to maintain the partition wall 35 against the relay terminal 17 and maintain the liquid sealing action force. Further, a solubilized synthetic resin member 39 is fitted into a concave portion 38 provided on the surface of the front partition wall 35 located on the side of the hood portion 31a, and the solubilized synthetic resin member 39 is heated and melted, so that the relay terminal 17 is heated.
A space around and / or in the conductor portion 19 can be efficiently and effectively liquid-sealed.

The heat-melted solubilized synthetic resin member 39 is
Through the filling hole 40 of the front partition wall 35, the space between the relay terminal 17 and the space inside the conductor portion 19 and the partition chamber 43 defined by the hollow housing 31 and the front and rear partition walls 35 and 21 are efficiently injected. ,
Will be filled. In particular, the solubilized synthetic resin member 39 is a relay terminal.
Since the complex shape around the tip of 17 is formed and solidified in advance to the desired size and shape, it is possible to sufficiently cover minute gaps, corners, etc. with only a simple insertion operation into the recess 38. It is now possible. Note that, depending on the heating and melting conditions of the solubilized synthetic resin member 39, the distal end of the relay terminal 17 and the front partition wall 35 which are in close contact with each other by insert molding or press fitting.
A small gap 36 is generated between the two due to the difference in linear expansion coefficient, and the filling efficiency can be further increased through the gap 36.

However, the space 36 is very small, and does not reach a size that induces oil leakage at the normal operating temperature around the connector, and the substantial holding force of the front partition wall 35 with respect to the relay terminal 17 varies. Don't come.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a main part of a wiring connector for an automatic transmission according to the present invention.

FIG. 2 is a perspective view showing a solubilized synthetic resin member applied to the wiring connector for an automatic transmission according to the present invention.

FIG. 3 is a longitudinal sectional view showing a main part of a conventional wiring connector for an automatic transmission.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oil case 2 Through-hole 10 Conventional wiring connector for automatic transmission 11 Hollow housing 11a Hood part 12 Flange part 13 Groove part 14 O-ring 15 Front partition wall 16 Terminal lead-out hole 17 Relay terminal 18 Scissors holding part 19 Conductor part 20 Electric wire 21 Rear partition wall 22 Wire lead-out hole 23 Partition room 24 Synthetic resin member 30 Wiring connector for automatic transmission of the present invention 31 Groove 31a Hood 32 Flange 33 Groove 34 O-ring 35 Front partition wall 36 Void 37 Partition Chamber 38 Concave part 39 Solubilized synthetic resin member 39a Terminal lead-out hole 40 Filling hole

Claims (3)

[Claims] 1. A wiring connector to be fitted into a through hole provided in a case wall of an automatic transmission, wherein a front partition wall integrally formed so as to be orthogonal to an axis inside the wiring connector. A plurality of relay terminals which are insert-molded or press-fitted into the front partition wall so that the front end of the hollow housing is exposed from the front partition wall to the hood along the axial direction of the hollow housing. A plurality of wires whose conductors are crimped and held by the holding portion of the relay terminal, a wire outlet hole corresponding to the relay terminal fixed to the front partition wall, and a rear portion of the hollow housing A rear partition wall that can be fitted into the opening area; and a solubilized synthetic resin member that can be fitted into a recess provided on the surface of the front partition wall located on the hood section side, and is fitted into the recess. Said solubilized synthetic resin member A wiring connector for an automatic transmission, which is capable of liquid sealing a gap around the relay terminal or in the conductor by heating and melting the wiring connector. 2. The wiring connector for an automatic transmission according to claim 1, wherein the solubilized synthetic resin member enables liquid sealing of a gap around the relay terminal and in a conductor portion. 3. The wiring connector for an automatic transmission according to claim 1, wherein the solubilized synthetic resin member is made of an epoxy resin.