JP3389004B2 - Wiring connector for automatic transmission - Google Patents

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 oil that has permeated the inside of an electric wire introduced into an oil case of an automatic transmission from leaking out.

[0002]

2. Description of the Related Art Main parts of a typical example of a conventional automatic transmission wiring connector improved to prevent oil from leaking from the oil case to the outside by being transmitted through a gap in a conductor portion (wire harness) of an electric wire. The vertical section is shown in Fig. 3.

It is attached to a through hole 2 formed through a wall 1 of an oil case of an automatic transmission through an O-ring 14 and a flange portion 12 fitted in a groove 13 formed in 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 having a plurality of terminal lead-out holes 16 provided therein so that it can be fitted into the housing 11. The front partition wall 15 to the hollow housing 11
A plurality of relay terminals 17 are press-fitted into the terminal lead-out holes 16 of the front partition wall 15 so that the tips of the hood portions 11a of the hood 11a are exposed along the axial direction of the hollow housing 11; A plurality of electric wires in which the conductor portion 19 is crimped and held by the portion 18.
20: Rear partition wall 21 through which an electric wire lead-out hole 22 corresponding to the relay terminal 17 fixed to the front partition wall 15 is fitted and which can be fitted in the rear opening area of the hollow housing 11; front of the hood part 11a side A synthetic resin member which is injected into the compartment 23 defined by the hollow housing 11 and the front and rear partition walls 15 and 21 through the terminal lead-out hole 16 of the partition wall 15 to liquid-seal the conductor 19 and the relay terminal 17. 24;

[0004]

However, the synthetic resin member 24, for example, an epoxy resin, which is injected into the compartment 23 as described above, is surrounded by the relay terminal 17 and the compartment 23 in a relatively narrow arrangement state. Since it is necessary to repeat filling into the relay several times, the filling workability is poor and the relay terminal 17
Adhesion failure of the synthetic resin member 24 to the above tends to occur, and as a result, the defect of oil leakage was not completely eliminated.

On the other hand, Japanese Laid-Open Patent Publication No. 6-223903 proposes a wiring connector for an automatic transmission, which is formed by insert-molding a relay terminal so as to be embedded in the connector housing. However, the wire between the connector housing and the relay terminal is proposed. Since the expansion coefficients are remarkably different, it is difficult to avoid the occurrence of defective adhesion between both members.

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

[0007]

The object of the present invention is to:
A wiring connector fitted in a through hole provided through a case device wall of an automatic transmission, the hollow connector having a front partition wall integrally formed therein so as to be orthogonal to an axis. A plurality of relay terminals insert-molded or press-fitted into the front partition wall so that the front end of the front partition wall is exposed along the axial direction of the hollow housing from the front partition wall to the hood portion; A plurality of electric wires in which the conductor portion is 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 provided through and fitted in the rear opening area of the hollow housing. A solubilized synthetic resin member that can be fitted in a recess provided on the surface of the front partition wall that is located on the side of the hood, and the solubilized synthetic material that is fitted in the recess. Do not 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 of a space around the relay terminal and in a conductor portion. .

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 is made of epoxy resin.

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

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a wiring connector for an automatic transmission according to the present invention will be described in detail below with reference to the accompanying drawings. Since the automatic transmission wiring connector 30 of 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 sandwiching portion 18, the conductor portion 19 and the electric wire 20, these members are used. The reference signs are commonly used.

The connector 30 of the present invention is fitted into a through hole 2 formed through a wall 1 of an oil case of an automatic transmission, and is integrally formed inside the through hole 2 so as to be orthogonal to the axis. A plurality of relay terminals 17 in which the conductor portion 19 of the electric wire 20 is crimped and held by the sandwiching portion 18 to the hollow housing 31 having the front partition wall 35 is provided from the front partition wall 35 to the hood portion 31a at its tip. Is insert-molded or press-fitted into the front partition wall 35 so as to be 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 transparently 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 the recess 38 provided on the surface of the front partition wall 35 located on the hood portion 31a side. It is made up of

As described above, the characteristic feature of the connector 30 of the present invention is that the solubilized synthetic resin member 39 is fitted in the recess 38 provided in the surface of the front partition wall 35 located on the hood portion 31a side. More specifically, the solubilized synthetic resin member 39 having a terminal lead-out hole 39a that is formed and solidified in advance to a size that can be fitted into the recess 38 and is solidified and through which the tip portions of the plurality of relay terminals 17 can be inserted is provided. After being fitted in a predetermined position in the final assembly step of the connector 30, it is heated and melted at a specified temperature and for a prescribed time.

The solubilized synthetic resin member 39 melted by heating is
It passes through the filling hole 40 that is transparently provided in the front partition wall 35, into the space in 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, 21. Injection,
Is filled. In particular, the solubilized synthetic resin member 39 is a relay terminal.
With respect to the complicated shape around the tip portion of 17, it is formed and solidified in a desired size and shape in advance, so that it is possible to sufficiently cover fine gaps, corners, etc. by a simple fitting operation into the recess 38. it can. It should be noted that depending on the heating and melting conditions of the solubilized synthetic resin member 39, there is a slight difference in the linear expansion coefficient between the tip portion of the relay terminal 17 and the front partition wall 35 that are in close contact by insert molding or press fitting. Creating a void 36,
The filling efficiency can be increased through the voids 36.
However, this space 36 is minute, and does not reach a size that induces oil leakage at a normal operating temperature around the connector, and does not change the substantial holding force of the front partition wall 35 with respect to the relay terminal 17. .

Incidentally, the filling hole 40 can be appropriately increased or decreased in the number thereof to be permeable, and in some cases, only the void 36 can be used to solubilize the synthetic resin member.
It can also be modified to provide 39 fills.

[0016]

The wiring connector 30 for an automatic transmission of the present invention constructed as described above has the following novel effects. That is, the wiring connector 30 for an automatic transmission according to the present invention is used in the oil case wall 1 of the automatic transmission.
A hollow housing 31 having a front partition wall 35 integrally formed therein so as to be fitted in a through hole 2 that is transparently provided in the inner wall of the through hole 2. Multiple relay terminals 17 with 20 conductors 19 crimped and held
Is insert-molded or press-fitted into the front partition wall 35 from the front partition wall 25 to the hood portion 31a so that its tip end is exposed along the axial direction of the hollow housing 31, so that the front portion at normal operating temperature It is now possible to maintain the partial partition wall 35 with respect to the relay terminal 17 and maintain the liquid sealing action force. Further, 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, and the solubilized synthetic resin member 39 is heated and melted, whereby the relay terminal 17
It has become possible to efficiently and effectively seal the space around and / or inside the conductor portion 19 with liquid.

The solubilized synthetic resin member 39 melted by heating is
Through the filling hole 40 of the front partition wall 35, the space is efficiently injected from around the relay terminal 17 into the void in the conductor portion 19 and the partition chamber 43 defined by the hollow housing 31 and the front and rear partition walls 35, 21. ,
Is filled. In particular, the solubilized synthetic resin member 39 is a relay terminal.
With respect to the complicated shape around the tip portion of 17, it is formed and solidified in a desired size and shape in advance, so that it is possible to sufficiently cover fine gaps, corners, etc. by a simple fitting operation into the recess 38. It became possible. It should be noted that depending on the heating and melting conditions of the solubilized synthetic resin member 39, the distal end portion of the relay terminal 17 and the front partition wall 35 that are in close contact with each other by insert molding or press fitting.
And a slight void 36 due to the difference in linear expansion coefficient was generated, and it became possible to further increase the filling efficiency through the void 36.

However, since the gap 36 is very small, it 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 drawings]

FIG. 1 is a vertical cross-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 a wiring connector for an automatic transmission according to the present invention.

FIG. 3 is a vertical cross-sectional view showing a main part of a conventional automatic transmission wiring connector.

[Explanation of symbols]

1 oil case 2 through holes 10 Conventional automatic transmission wiring connector 11 Hollow housing 11a Hood part 12 Flange 13 groove 14 O-ring 15 front compartment wall 16 terminal lead-out hole 17 Relay terminal 18 Scissors 19 Conductor 20 wires 21 rear compartment wall 22 Wire lead-out hole 23 compartments 24 Synthetic resin material 30 Wiring Connector for Automatic Transmission of the Present Invention 31 groove 31a Hood part 32 Flange 33 groove 34 O-ring 35 front compartment wall 36 void 37 compartments 38 recess 39 Solubilized synthetic resin material 39a Terminal lead-out hole 40 filling holes

Claims (3)

(57) [Claims] 1. A wiring connector fitted in a through hole provided through a case device wall of an automatic transmission, wherein a front partition wall integrally formed therein is formed so as to be orthogonal to a shaft core. A hollow housing having, a plurality of relay terminals insert-molded or press-fitted into the front partition wall such that the front end of the front partition wall is exposed to the hood along the axial direction of the hollow housing. A plurality of electric wires in which a conductor portion is crimped and held by a holding portion of the relay terminal, an electric wire lead-out hole corresponding to the relay terminal fixed to the front partition wall is transparently provided, and a rear portion of the hollow housing A rear partition wall that can be fitted in the opening area, and a solubilized synthetic resin member that can be fitted in a recess provided on the surface of the front partition wall that is located on the hood side, and are fitted in the recess. The solubilized synthetic resin member A wiring connector for an automatic transmission, characterized in that a space around the relay terminal or in a conductor portion can be liquid-sealed by heating and melting. 2. The wiring connector for an automatic transmission according to claim 1, wherein the solubilized synthetic resin member enables liquid sealing of voids around the relay terminal and in the conductor portion. 3. The wiring connector for an automatic transmission according to claim 1, wherein the solubilized synthetic resin member is made of epoxy resin.