JPH0782889B2 - Waterproof 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 waterproof connector, more specifically, a machine tool, a servomotor,
The present invention relates to an improvement of a circular connector used as an interface of a control circuit of an industrial machine such as a robot, which is particularly installed in a place where waterproofness is required.

[0002]

2. Description of the Related Art Conventionally, connectors used for servomotors in particular have been MS / AB type connectors, and not waterproof types. However, recently, water, oil, etc. from the connector often breaks down the servo motor, and the demand for waterproofness of the connector has increased. For example, a soldering type waterproof connector as shown in FIG. 4 has been developed. There is.
This connector consists of a shell 1 and a front insulator 6
And a rubber insulator 5 and a rear insulator 7, and a contact 8'for soldering is used.

[0003]

As described above, at present,
Although a soldering type waterproof connector has been developed, this soldering type waterproof connector is poor in workability such as production, disassembly and repair, and in order to obtain a protection circuit, it is necessary to connect between the shell and the contact. Requires special wiring work.

Therefore, an object of the present invention is to provide a waterproof connector which has good workability in production, disassembly and repair, and which can easily connect one terminal to the shell.

[0005]

According to the present invention, a shell, a rubber insulator removably inserted in the shell, a plurality of relay contacts provided in the rubber insulator, and a removable contact for the relay contact, respectively. A crimping contact that fits as much as possible, a ground lug that is attached to any one of the relay contact and the crimping contact and makes electrical contact with the shell, and the relay that is removably inserted into the shell A front insulator which holds the fitting between the contact and the crimping contact; and a rear insulator which is removably inserted into the shell and engages with the crimping contact to lock the crimping contact to the front insulator. , The rear insulator is detachably locked in the shell And Li Tina ring for locking the serial shell, a waterproof connector is obtained which is characterized by having a O-ring capable provided is brought into contact with the mating connector removably within said shell.

[0006]

1 is an exploded perspective view of a waterproof connector according to an embodiment of the present invention, FIG. 2 is a perspective view of a ground lug used in the same embodiment, and FIG. 3 is a sectional view of the same embodiment.

This waterproof connector includes a shell 1, a rubber insulator 5 which is detachably inserted into the shell 1, a plurality of relay pins 4 provided on the rubber insulator 5 as relay contacts, and each of the relay pins 4. A crimping press socket contact 8 that is an example of a crimping contact that is detachably fitted, a ground lug 9 that is attached to one of the relay pins 4 (relay pin 4 ′) and electrically contacts the shell 1, and a shell 1 A front insulator 6 which is removably inserted into the shell 1 and holds the fitting between the relay pin 4 and the press socket contact 8; and a press socket contact 8 which is removably inserted into the shell 1 and engages with the press socket contact 8. A rear insulator 7 that is locked to the front insulator 6 and a detachable engaging member in the shell 1. By having a re Tina ring 10 for locking the rear insulator 7 in the shell 1, and the O-ring 2 to contact the mating connector provided removably in the shell 1, a and.

Of the relay pins 4 provided in the rubber insulator 5, one relay pin 4'is the other relay pin 4
Than the other connector (not shown), a ground lug 9 is attached to the relay pin 4 ', and the relay pin 4'is a live wire pin. The ground lug 9 may be provided in one of the press socket contacts 8.

In this waterproof connector, a rubber insulator 5 having a relay pin 4 in a shell 1, a front insulator 6, and a rear insulator 7 are inserted in this order and held by a retainer ring 10.

At the time of assembly, the relay pin 4 manufactured by cutting or cold header is molded in or press-fitted into the rubber insulator 5, and then the rubber insulator 5 is press-fitted in the shell 1. After that, the front insulator 6 and the rear insulator 7 are installed in this order,
The entire retainer ring 10 is fastened and held. The press socket contact 8 has a cable (not shown)
The rear insulator 7 is attached to an appropriate place, and the contact portion 8a having the cylindrical spring piece is fitted and contacted with the relay pin 4, and the harness is completed.

Since this waterproof connector is a rear release type, when the press socket contact 8 is erroneously mounted, a rear insulator 7 is used by using a jig (not shown).
The press socket contact 8 can be removed by expanding the insulator leaf 7a formed on the.
Also, the other end of the cable (not shown) whose one end is connected to the press socket contact 8 is connected to a connector (not shown) or the like for attaching to a board (not shown).

When the retainer ring 10 is removed when a failure or the like occurs and inspection or replacement is required, each of the rubber insulator 5, the front insulator 6, the rear insulator 7, the relay pin 4, the press socket contact 8 and other insert parts are removed. It is made to be able to pull out. Therefore, the individual insert parts can be replaced, the entire insert part can be replaced, and one contact can be replaced. Since the closed entry 6a is formed on the end surface of the front insulator 6,
When the front insulator 6 is inserted into the shell 1, the relay pin 4 and the front insulator 6, which are previously arranged in the shell 1 together with the rubber insulator 5, are easily fitted to each other.

Further, one of the relay pins 4'is longer than the other relay pin 4 as a live wire pin as described above, and is electrically connected to the shell 1 via the ground lug 9. Therefore, it has a protection circuit structure. Since the rubber insulator 5 is required to have three performances of oil resistance, air tightness and heat resistance, it is preferable to use silicon rubber.

The ground lug 9 is formed by forming a square wire of about 0.5 mm, and when this ground lug 9 is mounted on the relay pin 4 ', the ground lug 9 is pressed against the relay pin 4'at 9b. When the rubber insulator 5 provided with the relay pin 4'is pressed into the shell 1, the 9a portion of the ground lug 9 is pressed into the shell 1, and this portion breaks the chromate film on the zinc plating of the shell 1 and the ground lug 9 The conduction of the shell 1 is obtained. The contact resistance between the relay pin 4'and the shell 1 is 0.1 Ω or less.

When the press socket contact 8 is inserted and mounted from the rear of the rear insulator 7, the annular projection 8b formed in the intermediate portion of the rear insulator 7 is replaced by the insulator leaf 7a.
Is elastically passed through and is engaged and locked. At the same time, the contact portion 8 a of the press socket contact 8 is fitted and connected to the relay pin 4.

[0016]

Since the waterproof connector of the present invention uses the crimping contact, the productivity is greatly improved as compared with the conventional waterproof connector. Therefore, the waterproof connector of the present invention is excellent in mass productivity and can reduce costs. Further, the waterproof connector of the present invention has good workability such as disassembly and repair, and can easily exchange insert parts. Further, the waterproof connector of the present invention can have a simple protection circuit structure and has excellent waterproofness.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a waterproof connector according to an embodiment of the present invention.

FIG. 2 is a perspective view of an earth lug used in the waterproof connector shown in FIG.

FIG. 3 is a sectional view of the waterproof connector shown in FIG.

FIG. 4 is an exploded perspective view of an example of a conventional waterproof connector.

[Explanation of symbols]

 1 Shell 2 O-ring 4 Relay Pin 5 Rubber Insulator 6 Front Insulator 7 Rear Insulator 8 Press Socket Contact 9 Ground Lug 10 Retainer Ring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuo Ishijima 2-7-12 Yoyogi, Shibuya-ku, Tokyo Inside Daiichi Denki Kogyo Co., Ltd. (72) Inventor Kunio Watanabe 2-7-12 Yoyogi, Shibuya-ku, Tokyo Inside Dai-ichi Electronics Co., Ltd.

Claims (1)

[Claims] 1. A shell, a rubber insulator removably inserted into the shell, a plurality of relay contacts provided in the rubber insulator, and a crimping contact that is detachably fitted to each of the relay contacts. A grounding lug mounted on one of the relay contact and the crimping contact and electrically contacting with the shell; and a fitting of the relay contact and the crimping contact, which is removably inserted into the shell. A front insulator that holds the crimp contact, a rear insulator that is removably inserted into the shell and that engages with the crimp contact to lock the crimp contact to the front insulator, and a detachable lock in the shell. Is used to lock the rear insulator in the shell. And a O-ring that is detachably provided in the shell and abuts on a mating connector, a waterproof connector.