JP2825143B2 - 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 connector for connecting an electric wire connected to a hydraulic circuit installed in a casing of an automatic transmission of an automobile and a control device outside the casing.

[0002]

2. Description of the Related Art Conventionally, an automatic transmission is provided with a torque converter and a transmission gear mechanism. The rotation of the engine taken out by a crankshaft is transmitted to an input shaft via a torque converter, and further transmitted to a transmission gear mechanism. It has a structure. The transmission gear mechanism is provided with a multi-plate brake or a multi-plate clutch, and these gears are engaged and disengaged so that the gears can be shifted.

The engagement and disengagement of the friction engagement means is performed by a hydraulic circuit, which is provided with a valve, a hydraulic servomotor, an accumulator, and the like, and a solenoid for forming a signal pressure of each of these elements. A valve is provided. The solenoid that operates the solenoid valve is housed in the transmission case while being attached to the valve body, and connection to devices that control the solenoid, oil temperature sensor, and the like is made through openings provided in the transmission case. It has become. Therefore, a sealing body is provided in the opening so that the oil in the oil pan does not leak to the outside.

[0004] The sealing body and the connector, which is an electrical connection terminal, are formed separately from each other and are connected by a wire harness. However, there are disadvantages such as an increase in the number of caulked portions and man-hours.

Therefore, as shown in FIGS. 4 and 5, there has been proposed a connector device K in which a sealing body and a connector are integrated (Japanese Patent Laid-Open No. 2-278673). The connector device K is provided with an inner plate c for holding a terminal b in a casing a attached to a transmission case (not shown) of the automatic transmission, and an electric wire drawn through the sealing body d from inside the transmission case. e and terminal b are connected. On the other hand, the gap between the inner plate c and the terminal b is filled with an epoxy resin g as a leakage preventing material in order to prevent oil in the transmission case from being transmitted along the electric wire e by capillary action and leaking to the fitting surface f. . However,
Since the structure inside the casing a is complicated, the operation of filling the epoxy resin g is extremely complicated, and there is a problem that productivity is remarkably deteriorated.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and is intended for an automatic transmission capable of reliably shutting off oil leakage without filling with a resin material for preventing leakage. It is an object of the present invention to provide a connector.

[0007]

In order to achieve the above-mentioned object, the present invention provides a terminal formed by sealing between a terminal insertion hole of a substrate having a plurality of terminals inserted therein and the terminal by soldering. The terminal holding plate is installed in the middle of the holding plate and the inner wall.
And a cylindrical housing, the cylindrical housing
Molded integrally with the terminal holding plate by insert molding
At the same time, the liquid
A sealing body for preventing body leakage is mounted .

[0008]

According to the present invention, the terminal holding plate is attached to the inner wall of the cylindrical housing by integral molding after sealing the gap between the terminal insertion hole and the terminal of the board constituting the terminal holding plate by soldering. As well as preventing liquid leakage at the wire entry section in the latter half
Because the sealing body for stopping is attached , without using a leakage prevention material such as a synthetic resin material for the terminal insertion hole,
Leakage of a liquid such as oil can be reliably prevented from the wire connection portion side of the terminal to the terminal fitting portion side of the terminal insertion hole. Therefore, the step of filling the terminal insertion hole with the leakage prevention material is omitted, so that productivity and reliability are improved.

[0009]

FIG. 1 is a longitudinal sectional view of a connector A showing an embodiment of the present invention. The connector A is formed by integrally attaching a terminal holding plate 2 in which a plurality of terminals 3 are inserted to an inner wall 1a of a cylindrical housing 1 by molding. In FIG. Electric wire 4 introduced into housing 1
Are connected.

[0010] The housing 1 is formed in a tubular shape, a fitting portion 1b for mating with a mating connector is provided in the first half, and an electric wire introducing portion 1c to be connected to a casing or the like of the transmission is formed in the second half. 1d is a sealing body for preventing leakage of oil in the casing. The electric wire 4 introduced through the electric wire introduction part 1c and the electric wire connection part 3 of the terminal 3 inserted into the terminal holding plate 2
a is electrically connected to each other by caulking or the like.

FIG. 2 is an explanatory view of a step of forming the terminal holding plate 2. The terminal holding plate 2 is formed by mounting a substrate 5 formed by molding a polyimide as a heat-resistant resin material on a terminal fixing jig 6 and inserting and soldering the terminal 3.

A hole 7 for terminal insertion and a hole 8 for positioning are formed in the surface 5a of the substrate 5, and a junction is formed by attaching a conductive metal foil around the terminal insertion hole 7 by printing or the like. A portion 7a is formed. On the upper surface 6a of the terminal fixing jig 6, a terminal holding hole 9 and a positioning projection 10 are provided at positions corresponding to the terminal insertion hole 7 and the positioning hole 8 of the substrate 5, respectively.

As shown in FIG. 3, the substrate 3 is placed on the terminal fixing jig 6 so that the positioning projections 10 and the positioning holes 8 are aligned. The male terminal 3 is inserted into the insertion hole 7. Then, the wire connecting portion 3a of the inserted terminal 3 'and the joining portion 7a are soldered s.
And the gap between the terminal insertion hole 7 and the terminal 3 is sealed. By repeating the above steps and soldering the terminals 3 inserted into all the terminal insertion holes 7 of the substrate 5 and the respective joints 7 a of the substrate 5 to seal the terminal insertion holes 7, The holding plate 2 is created.

The material of the substrate 5 is not limited to polyimide, and any material having excellent heat resistance and oil resistance can be used. The terminal holding plate 2 prepared in the above process is mounted on a mold for integral molding of the housing 1 and is subjected to so-called insert molding, so that the terminal holding plate 2 is held on the inner wall 1a of the housing 1 as shown in FIG. The connector A on which the plate 2 is mounted is formed.

[0015]

According to the present invention, the terminal insertion portion is soldered.
Attach the terminal holding plate, which is sealed and attached to the inside of the housing, and to prevent liquid leakage in the wire introduction part in the latter half
Since the sealing member is mounted, there is no need to fill the terminal insertion hole into which the terminal is inserted with a leakage prevention member for preventing liquid leakage. Accordingly, there is an advantage that the step of filling the leakage prevention material is omitted, and that an obstacle such as liquid leakage from the terminal insertion portion is reliably eliminated, and that productivity and reliability are improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a connector according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a step of producing the terminal holding plate of FIG.

FIG. 3 is an explanatory view of a step of attaching terminals to the substrate of FIG. 2;

FIG. 4 is a longitudinal sectional view of a conventional connector for an automatic transmission.

FIG. 5 is a front view of the connector of FIG. 4;

[Explanation of symbols]

 A connector 1 housing 1a inner wall 2 terminal holding plate 3 terminal 5 substrate 7 terminal insertion hole

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁶ , DB name) H01R 13/52 H01R 9/16 101

Claims (1)

(57) [Claims] 1. A terminal holding plate formed by sealing between a terminal insertion hole of a substrate into which a plurality of terminals are inserted and a terminal by soldering, and the terminal holding plate is mounted at an intermediate portion of an inner wall. Was
And a cylindrical housing, the cylindrical housing
Molded integrally with the terminal holding plate by insert molding
At the same time, the liquid
A connector having a sealed body for preventing body leakage .