JP3067076B2 - Housing mating type 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 housing-coupled connector mainly used for electric wiring in a device having a small and long depth, such as in a transmission gear mechanism of an automatic transmission.

[0002]

2. Description of the Related Art Conventionally, automatic transmissions used in automobiles and the like are provided with a torque converter and a transmission gear mechanism. In a transmission gear mechanism that electronically controls gears, an electric wire or the like connected to the outside is provided. Built-in connector. As a connector for such a transmission gear mechanism, as shown in FIG.
Connector device K jointly proposed by the present applicant and another applicant
(JP-A-2-278673).

[0003] The connector device K, after the inner plate b fixing the terminal a (see FIG. 8) is fixed is pushed into the casing c, it is sealed by injecting mold resin into the casing c. However, increase the terminal holding force
Molding resin to be injected from the need, due to the use of high hardness resins such as epoxy resin, cracks tend to occur in the resin, the sealing property may impair possibility, also in work of connecting the electric wire, the electric wire since it is necessary to penetrate the casing c and rubber stopper d, points to be improved in workability becomes terminal process complicated significantly decreases the
there were.

[0004] To solve the above problem, the present applicant by Japanese Patent Application No. 6-131565 proposed a housing coupling connector J as shown in FIG. 9 above.
In this housing-coupled connector J, after the terminal f is temporarily inserted into the inner housing e, the outer housing g
The outer housing g
Is deep , it is difficult to determine whether or not the inner housing e is fitted at a predetermined position.

For this reason, as shown in FIG. 10, when the connection between the inner housing e and the outer housing g is insufficient (the lock hook h is not locked to the rear wall i of the inner housing e), An error may occur that the worker cannot find it and inserts the resin injector k into the resin injection port j to inject the mold resin. Thereafter, even if conduction failure is found by fitting failure, it is extremely difficult to remove the molded resin from the outer housing g and the inner housing e
From, in practice repair non-defective product occurs, resolve that
It has been found that there are problems to be solved.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is possible to easily insert a terminal even in a structure where a terminal engagement position is narrow and deep, and Insufficient fitting between housings can be easily found,
It is an object of the present invention to provide a housing-coupled connector that can prevent conduction failure due to poor fitting.

[0007]

In order to achieve the above object , a housing-coupled connector according to the present invention comprises a cylindrical outer housing having a partition wall having a plurality of terminal lead-out holes, and a plurality of terminal accommodating chambers. an inner housing having a sealing rubber plug, and a plurality of terminals accommodated in the terminal accommodating chamber, the terminal receiving chamber through said rubber plug
While connected and the electric wire and the terminal introduced within, by fitting the inner housing and the rubber plug in the outer housing, housing coupling type which is adapted to project the electrical contact portion of the terminal from the terminal lead-out hole of the partition wall a connector, the lock engaging portion provided on the opening edge side of the filler inlet while opening the filler inlets on the outer shell of the outer housing, allowed to be engaged with the lock engaging portion in the outer of the inner housing and attached the wrinkles of the lock arm, Inn
Incomplete fitting between the inner housing and outer housing
The lock arm projects into the filler inlet
It is characterized by being constituted .

According to a second aspect of the present invention, there is provided a lock hook and a lock hook insertion port for engaging and fixing the outer housing and the inner housing, and the lock hook and the edge of the lock hook insertion port are engaged. At this time, it is preferable that the flexible lock arm be engaged with the lock locking portion.
Further, as described in claim 3, the inner housing preferably has a rubber stopper holding means.

[0009]

According to the housing-coupled connector of the present invention, the inner housing is fitted into the outer housing so that the housings are connected to each other. It is automatically locked between the housing and the partition wall of the outer housing, and even if the terminal is half-inserted into the terminal accommodating chamber, it can be easily inserted into a predetermined position by pressing the inner housing. It is suitable for a connector having a deep structure.

[0010] The work of connecting the terminal to the electric wire and mounting the terminal into the terminal accommodating chamber can be performed on one side of the inner housing, that is, the rubber stopper side, so that the workability is good. If the inner housing and the outer housing are incompletely fitted, the lock arm of the inner housing protrudes into the filler inlet of the outer housing. An error of injecting the filler as it is is reliably prevented.

The lock hook of the outer housing is inserted into the lock hook insertion opening of the inner housing, and when the lock hook engages with the edge of the lock hook insertion opening, the flexible lock arm is locked. By engaging with the portions, the inner housing and the outer housing are locked in a double manner, so that the holding and fixing thereof are ensured.
Furthermore, as described in claim 3, a locking projection is provided on the inner housing as a locking means between the rubber plug and the inner housing, and the locking recess formed on the rubber plug is fitted with the locking projection. By integrating the rubber stopper and the inner housing, the inner housing does not drop off or move along the wire when the wire is inserted and the terminal is connected. Improve sexuality

[0012]

FIG. 1 is a perspective view showing an outer housing 1 and an inner housing 2 constituting a housing-coupled connector A according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view thereof. . In the outer housing 1, a fitting opening 1b for fitting with a mating connector is opened at one end of a cylindrical outer shell 1a, and a partition wall 4 having a plurality of terminal lead-out holes 3 is provided inside. I have. In front of the partition 4, a lock hook 5 for locking the inner housing 2 is protruded from the partition 4 in a cantilever manner.
A filler injection port 6 is opened in the outer shell 1a, and a lock locking portion 8 for locking a lock arm 7 of the inner housing 2 described later is recessed in front (on the opening edge side) . .

As shown in FIG. 3, the inner housing 2 is formed so that an outer shell 2a is fitted into a housing accommodating portion 1c formed on the inner wall of the outer housing 1.
Inside, a plurality of terminal accommodating chambers 9 and two lock hook insertion openings 10 for inserting the lock hooks 5 of the outer housing 1 are provided. A lock arm 7 having flexibility is attached to the outer shell 2 a at a position corresponding to the filler inlet 6 of the outer housing 1. The free end of the lock arm 7 has a lock engagement portion 8 of the outer housing 1.
Is provided with a locking projection 11 that engages with the engaging projection.

An electric wire insertion hole 9a communicating with the terminal accommodating chamber 9 is formed in the rear wall 2b of the inner housing 2. The electric wire 12 is inserted through the electric wire insertion hole 9a, and the terminal accommodating chamber 9 is inserted.
And is connected to the terminal 13. Also, as a locking means from the rear wall 2b to the rubber stopper 14,
Locking projections 15, 15 are provided. As shown in FIG. 4, locking recesses 16, 16 for receiving the locking projections 15, 15 are formed in the rubber stopper 14.

Next, a process for assembling the above-described components to form the housing-coupled connector A will be described. First, as shown in FIG. 4, the electric wire 12 is inserted into the electric wire insertion hole 17 of the rubber plug 14 for sealing, and the electric wire 12 penetrating the rubber plug 14 is further inserted into the electric wire insertion hole 9 a of the inner housing 2. Then, the end of the electric wire 12 is pulled out from the terminal accommodating chamber 9, the insulating coating is peeled off, and the electric wire 12 is placed on the electric wire connection portion 13 a of the terminal 13 and crimped to crimp the terminal 13.

Next, by pulling back the electric wire 12 in the direction of arrow P, the crimped terminal 13 is temporarily locked in the terminal accommodating chamber 9 (the state of the terminal 13 'shown in FIG. 4). Inner housing 2 in which terminals 13 are temporarily locked in terminal accommodating chamber 9
Is inserted into the outer housing 1, and the electrical contact portion 13 b of the terminal 13 is provided on the outer housing 1.
And is projected from the partition 4 toward the fitting opening 1b.

At this time, the lock hook 5 of the outer housing 1 is inserted into the lock hook insertion opening 10 of the inner housing 2, and the edge 10 a of the lock hook insertion opening 10 opened on the rear wall 2 b of the inner housing 2 and the lock hook 5. Locking claw 5
5, the engagement between the outer housing 1 and the inner housing 2 is locked, and the locking projections 11 of the lock arms 7 of the inner housing 2 are engaged with the locking members of the outer housing 1 as shown in FIG. By fitting into the stop portion 8, the fitting is securely locked.

If the engagement between the outer housing 1 and the inner housing 2 is incomplete, the locking projection 11 of the lock arm 7 does not fit into the lock locking portion 8 as shown in FIG. Is protruded into the filler inlet 6 of the outer housing 1, and it is impossible for the worker to insert the filler injector into the filler inlet 6. . Therefore, it is possible to prevent an error of injecting the filler while the fitting is incomplete.

When the outer housing 1 and the inner housing 2 are completely fitted, the locking projections 11 of the lock arm 7 are fitted into the lock locking portions 8 to thereby lock the lock arm 7 as shown in FIG. Since the filler 7 does not protrude into the filler inlet 6, it does not hinder the insertion of the filler injector, and the filler can be injected smoothly. After confirming complete fitting, a rubber stopper 14 is fitted to the seal wall 1d of the outer housing 1, and a flexible silicone resin is injected from the filler injection port 6 to seal the inner housing 2, whereby the inner housing 2 is sealed. Housing connection type connector A
Is formed.

[0020]

According to the present invention, the housing-coupled connector is
Since the inner housing is fitted into the outer housing and the housings are connected to each other, the terminals in the terminal receiving chamber automatically move between the inner housing and the partition wall of the outer housing as the fitting of the housings proceeds. Even when the terminal is half-inserted into the terminal accommodating chamber, the terminal can be easily inserted into a predetermined position by pressing the inner housing, so that it is suitable for a connector having a small and deep structure. The work of connecting the terminal to the electric wire and mounting the terminal in the terminal accommodating chamber can be performed on one side of the inner housing, that is, the rubber stopper side, so that the workability is remarkably improved. If the inner housing and the outer housing are incompletely fitted, the lock arm of the inner housing protrudes into the filler inlet of the outer housing. An error of injecting the filler as it is is reliably prevented.

Further, when the lock hook provided on the outer housing is inserted into the lock hook insertion port of the inner housing, and the lock hook and the edge of the lock hook insertion port are engaged with each other. Since the flexible lock arm is engaged with the lock locking portion, the inner housing and the outer housing are locked twice, so that the holding and fixing of the inner housing and the outer housing are ensured.

Furthermore, if the rubber plug and the inner housing are provided with locking means to integrate the rubber plug with the inner housing, the electric wires can be inserted and the terminals can be connected. There is a great advantage that the inner housing does not drop off from the inserted electric wire or move along the electric wire, and workability is further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outer housing and an inner housing of a housing-coupled connector according to an embodiment of the present invention in a separated state.

FIG. 2 is a sectional view of an outer housing, an inner housing, and terminals of FIG.

FIG. 3 is a perspective view of the inner housing of FIG. 2;

4 is a cross-sectional view showing a state where a terminal to which an electric wire is connected is inserted into the inner housing of FIG. 2 and a rubber stopper.

5 is a cross-sectional view showing a state where the outer housing and the inner housing of FIG. 2 are fitted.

FIG. 6 is a cross-sectional view showing a state in which fitting between the outer housing and the inner housing in FIG. 2 is incomplete.

FIG. 7 is a sectional view of a conventional connector device.

FIG. 8 is a perspective view of the inner plate of FIG. 7 ;

FIG. 9 is a cross-sectional view of a conventional housing-coupled connector.

FIG. 10 is an explanatory diagram showing a state in which the housings shown in FIG. 9 are incompletely fitted to each other.

[Explanation of symbols]

 Reference Signs List A Housing-coupled connector 1 Outer housing 1a Outer shell 2 Inner housing 2a Outer shell 3 Terminal outlet 4 Partition wall 6 Filler inlet 7 Lock arm 8 Lock engaging part 9 Terminal accommodating chamber 12 Electric wire 13 Terminal 13b Electrical contact part 14 Rubber stopper

Claims (3)

(57) [Claims] A cylindrical outer housing having a 1. A partition wall opened multiple terminals lead-out hole, the inner housing having a plurality of terminal accommodating chambers, a sealing rubber plug, the accommodating chamber said end <br/> element and a plurality of terminals for accommodating, along with connecting the wire and the terminal of the rubber stopper and penetrating into the terminal receiving chamber, by fitting the inner housing and the rubber plug in the outer housing, the partition wall terminal A housing-coupled connector in which an electrical contact portion of the terminal protrudes from a lead-out hole, wherein a filler filling port is opened in an outer shell of the outer housing, and a lock engaging portion is provided on an opening edge side of the filler filling port. the provided, by attaching a flexible locking arm to the engagement with the lock engaging portion in the outer of the inner housing, the inner Howe
When the fitting between the jing and the outer housing is incomplete,
Is such that the lock arm projects into the filler inlet.
Housing coupling connector, characterized in that it is configured to. 2. A lock arm having a lock hook and a lock hook insertion port for engaging and fixing the outer housing and the inner housing, and a flexible lock arm when the lock hook and the edge of the lock hook insertion port are engaged. 2. The housing-coupled connector according to claim 1, wherein the connector engages with the lock engaging portion. 3. The connector according to claim 1, wherein the inner housing has a rubber stopper holding means.