JPH0615270U - Conductive wire seal structure - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the work of sealing the conductive wire. [Structure] The conductive wire 5 connects the inside and outside of the sealed electric device. The conductive wire 5 is a peeled portion 5c obtained by peeling a part of the film 5b.
And the untwisting portion 5d of the core wire 5a exposed from the peeling portion 5c
There is. The untwisting portion 5d is sealed by the seal portion 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in a seal structure of a conductive wire that connects the inside and the outside of a sealed electric device such as an automatic transmission for a vehicle in which an electric device is arranged in a casing.

[0002]

[Prior art]

 Conventionally, as a sealing structure for this type of conductive wire, as in the techniques disclosed in Japanese Utility Model Publication No. 60-183532 and Japanese Utility Model Publication No. 63-20317, the coating in the middle of the conductive wire is peeled off and this portion is removed. By pouring the solder into, the gap between the core wires in the conductive wire is blocked. This improves the sealing effect in the conductive wire.

[0003]

[Problems to be solved by the device]

 However, simply peeling off the film in the middle of the conductive wire does not allow the resin solution such as highly viscous epoxy resin to penetrate into the voids between the core wires, leaving voids and reducing the sealing effect. It required the work of pouring in the solder. The present invention has been made in view of the above problems, and an object of the present invention is to provide a conductive wire sealing structure capable of easily performing a sealing operation in a conductive wire.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a twisted-back portion of a core wire that is exposed by peeling off a part of a coating of a conductive wire that connects the inside and outside of a sealed electric device, and a seal portion that seals the twisted-back portion. A seal structure of a conductive wire is provided.

[0005]

【Example】

 A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows an embodiment applied to an automatic transmission of a vehicle, and shows a state in which an electric connection device is attached to a casing 1 of the automatic transmission. The body 2 of the electrical connection device has a substantially cylindrical shape, and the cylindrical fitting portion 2a that can be fitted into the hole 1a of the casing 1 is an annular groove for arranging the O-ring 3 for sealing. 2b. The body 2 has four leg portions 2c on the right end side in FIG. 1, and a stopper portion 2d is provided at the tip of the leg portion 2c. The outer diameter portion of the stopper portion 2d has a tapered surface to facilitate insertion into the hole 1a of the casing 1. Further, a stopper portion 2e serving as a stopper in the insertion direction of the body 2 is provided on the left end side of the body 2 in FIG. A small diameter portion 2f is provided on the inner diameter portion of the body 2, and the small diameter portion 2f is provided with a columnar elastic member 4 with a diameter increasing portion so as to be fitted into the small diameter portion 2f and stopped by the step portion 2g. . The elastic member 4 is provided with a plurality of through holes 4a penetrating the elastic member 4 in the axial direction, and an enlarged large diameter portion 4c extending to the end surface 4b of the elastic member 4 is formed at the end of the through hole 4a. There is.

Each of the through holes 4 a has a conductive wire 5 that connects the inside and the outside of the casing 1 inserted therein in a close contact manner. This conductive wire 5 has heat resistance and oil resistance, and as shown in FIG. 2, a large number of core wires 5a are covered with a film 5b. The conductive wire 5 has one end connected to an electric device (not shown) such as a solenoid inside the casing 1, and the other end connected to a control device (not shown) such as a control unit outside the casing 1. The plurality of conductive wires 5 are arranged in the resin pipe 6 in a bundled state.

In the conductive wire 5, the core wire 5a is exposed from the peeled portion 5c where a part of the film 5b is peeled off in the large diameter portion 4c of the through hole 4a, and the core wire 5a is elongated as shown in FIGS. 1 and 2. The untwisted portion 5d is formed by untwisting in the vertical direction. In the untwisted portion 5d, the voids between the core wires 5a greatly expand, and the resin solution of the seal portion 7 described later spreads evenly over the voids between the core wires 5a. Therefore, after the resin solution in the seal portion 7 is hardened, oil or the like in the casing 1 does not penetrate into the conductive wire 5 and leak to the outside. Further, the untwisted portion 5d has a function of positioning the conductive wire 5 in the longitudinal direction by abutting on the step surface of the large diameter portion 4c shown in FIG.

A seal portion 7 is formed and sealed in the body 2 and the large diameter portion 4 c by injecting a resin solution such as an epoxy resin and hardening the resin solution. Along with this, the untwisted portion 5c of the conductive wire 5 is also sealed by the seal portion 7 as described above.

[0009]

[Effect of device]

 As described in detail above, according to the configuration of the present invention, the solder is poured by simply peeling off a part of the film of the conductive wire and untwisting the exposed core wire and sealing the untwisted portion with the seal portion. It is possible to seal the inside of the conductive wire very easily without the need for work and extra parts such as crimp parts.

[Brief description of drawings]

FIG. 1 is an assembled sectional view showing an embodiment according to the present invention.

FIG. 2 is an enlarged sectional view of an essential part showing a conductive wire and an untwisting part in FIG.

[Explanation of symbols]

 5 Conductive Wire 5a Core Wire 5b Film 5c Peeling Part 5d Untwisting Part 7 Sealing Part

Claims (1)

[Scope of utility model registration request] 1. A twisted-back portion of a core wire, which is exposed by peeling off a part of a film of a conductive wire connecting the inside and outside of a hermetically sealed electric device,
A seal structure for sealing the untwisted portion, the seal structure for a conductive wire, comprising: