JPH10172652A - Electrical connector - Google Patents

Abstract

[PROBLEMS] To reduce the size of a connector having a guide hole for receiving a guide pin of a mating connector. A guide pin provided on a mating connector is provided.
In the electrical connector in which the guide hole 7 for receiving the housing 2 is formed, the guide hole 7 is opened at one end of the hollow metal column 6 screwed to the housing of the electrical connector or a member connected to the housing. An engaging portion 10 having a polygonal inner peripheral surface for engaging with a rotating tool is provided on a part of the inner surface of the hollow portion 8 and the other end of the hollow columnar body 8 A screw portion 12 for screwing is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connector, and more particularly, to an electric connector having a guide hole for receiving a guide pin provided in a mating connector and guiding the mating connector at the time of connection.

[0002]

2. Description of the Related Art An example of such an electrical connector is the one disclosed in Shokai 6
There is one disclosed in Japanese Patent Application No. 0-181871. As shown in FIG. 4 of the accompanying drawings, this known device has a guide hole 61 for receiving a guide pin 52 having a conical head projecting downward from a flange portion 51 of a mating connector 50.
Are connectors 60 formed on the housing 62. The connector 62 has a protrusion 64 for holding a plurality of contacts 63. The guide holes 61 are formed in bulging portions 65 provided at both ends of the projecting portions 64.

Thus, when the guide pins 52 of the mating connector 50 are inserted into the guide holes of the connector 60, the contacts (not shown) of the mating connector 50 and the connector 6 are naturally formed.
The zero contact 63 is brought to a corresponding position and connected.

[0004]

In the connector 60 shown in FIG. 4, since the bulging portion 65 in which the guide hole 61 is formed is formed integrally with the projecting portion 64, the guide hole 61 is formed. Is a portion near the contact 63 (projection 64
The part close to the inside) has a large strength,
The opposite part is thinner and relatively weak because the material is an insulating material such as plastic. In addition, during the fitting operation with the mating connector, the guide hole 61
In many cases, a large force is applied to the peripheral wall from the guide pin 52, and in such a case, the peripheral wall may be damaged.

[0005] In order to solve such a problem, a method in which a member having a guide hole formed therein is made of metal as a separate member from the above-mentioned protruding portion, and this is fixed to the housing body by screwing is also conceivable. However, in order to mount this member, a nut portion that applies a rotational force to the member for screwing must be provided on the outer periphery. Then, it is necessary to provide a predetermined space between the member and the protruding portion to secure a space in which a fastening tool can be inserted. This leads to an increase in the size of the connector, which is contrary to recent demands.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and makes it possible to attach a high-strength member in which a member having a guide hole is made of metal and made separately from the housing to the housing, and to reduce the size of the connector. An object is to provide an electrical connector that can contribute.

[0007]

The electrical connector according to the present invention has a guide hole for receiving a guide pin provided in a mating connector.

The guide hole is formed as a hollow portion opened at one end side of a metal hollow columnar body screwed to a housing of the electric connector or a member connected to the housing. An engagement portion having a polygonal inner peripheral surface for engagement with a rotating tool is provided on a part of the inner surface of the hollow portion, and a screw portion for screwing is provided at the other end of the hollow columnar body. Is provided.

In the present invention having such a configuration, the hollow columnar body has no portion for screwing on the outer periphery, and therefore is disposed close to the housing, for example, the side surface of the protrusion of the housing. The attachment to the housing is performed by screwing with a screw portion, and a tool therefor is engaged with a polygon inner peripheral surface provided in the hollow portion to apply a torque for screwing.

In a preferred embodiment of the present invention, a contact piece for elastic contact with the guide pin is accommodated in the hollow portion, and the screw portion is held by the housing when the hollow columnar body is screwed and attached. It can be configured to be able to contact the contact terminal that is in use. By doing this,
If the guide pin of the mating connector is made of metal for grounding, grounding can be performed between the connectors via the contact piece, the screw portion, and the ground terminal.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, the connector 1 of the present embodiment and the mating connector 31 are shown cut off at an intermediate position in the longitudinal direction.

The connector 1 has a housing member 2 made of an insulating material and a holding member 4 made of an insulating material for holding the contact 3.
, A plate-like locator 5 made of an insulating material, and a hollow columnar body 6 in which a guide hole 7 is formed.

A plurality of L-shaped contacts 3 are implanted in the holding member 4, and the holding member 4 is inserted into the recess 2 A of the housing body 2 from the rear to thereby form the plurality of contacts 3. Each of the connecting portions 3A formed on the front portion of the contact 3 is accommodated in a corresponding one of the plurality of grooves 2D formed on the edge of the slit-shaped concave portion 2C formed on the front portion 2B of the housing body 2. Will be able to After a while
A locator 5 having a positioning hole 5A is mounted on a connection portion 3B, which is a rear portion of the contact 3, from below so as to be guided by the positioning hole 5A corresponding to the connection portion 3B.

The metal hollow pillars 6 having the guide holes 7 for receiving the guide pins 32 of the mating connector 31 are provided at both ends of the housing main body 2, and as shown in FIGS. Only one hollow columnar body 6 is shown.), Has a cylindrical hollow portion 8 opened at the front end, and the guide hole 7 is adjacent to the tapered introduction portion 8A at the opening edge of the hollow portion 8. Is formed. As a preferred form, a shallow annular concave portion 8B is formed on the peripheral surface of the intermediate portion of the hollow portion 8, and a metal contact member 9 is fitted therein. The contact member 9 is formed, for example, as a thin cylindrical member having elasticity in the diameter-expanding direction, and is in contact with the annular concave portion 8B and has an elastic contact portion partially cut and raised radially inward. It has a piece 9A. In the present embodiment, the contact pieces 9A are provided at three locations in the circumferential direction.

A cap nut-shaped engaging portion 10 is formed at the back of the hollow portion 8. Even if the engaging portion 10 does not have a hexagonal shape as shown in the figure, it is sufficient that the engaging portion 10 has a polygonal shape so that a tool can be engaged.

Further, the hollow columnar body 6 has a guided portion 11 having a circumferential surface whose outer periphery is once reduced to a stepped shape, and a screw portion 12 having a male screw is provided at a rear end portion. Have been.

The hollow columnar body 6 is inserted into a corresponding guide hole (not shown) of the housing body 2 at the guided portion 11, and close to the side surface of the front portion 2B of the housing body 2 as shown in FIG. Mounted. At this time, the hollow columnar body 6 is fixed to the housing main body 2 by screwing the screw portion 12 to the housing main body 2 or a member attached to the housing main body 2. In the present embodiment, as a preferable case, it is screwed so as to be connected to a ground terminal (not shown) attached to the housing body 2.

On the other hand, the mating connector 31 has a guide pin 32 protruding from a flange 33 provided on the housing body 2. The guide pin 32 may be made of an insulating material.
It is formed as a metal guide pin connected to one ground terminal (not shown). The connector 31 is formed with an insulating plate-shaped fitting portion 34 protruding therefrom, and a plurality of contacts 35 are arranged on upper and lower surfaces thereof.

The connector 1 of the present embodiment as described above is fitted and connected to the mating connector 31 as follows.

Before the contact 35 of the mating connector 31 is connected to the contact 3 of the connector 1, the guide pin 32 of the mating connector 31 is guided into the guide hole 7 of the connector 1. Since such guidance is provided by the guide holes 7 and the guide pins 32 at both ends of the connector 1 and the mating connector 31, both connectors are brought to a predetermined fitting position.

When the guide pin 32 is guided by the guide hole 7 and enters the hollow portion 8 of the hollow columnar body 6, FIG.
And it comes into elastic contact with the contact piece 9A of the contact member 9 shown in FIG. 3, and then stays at the predetermined position. At this time, the fitting portion 34 of the mating connector 31 enters the slit-shaped concave portion 2C of the connector 1, and the contact 35 and the contact 3 (connecting portion 3A) are connected to each other. ing. The guide pin 32 is made of metal in the present embodiment, and is connected to a ground terminal (not shown) of the connector 1 via the contact member 9 (the contact piece 9A) and the screw portion 12, and grounds between the two connectors. You.

With this connector, the hollow columnar body 6 can be attached to the housing body 2 and, if necessary, removed by inserting a tool such as a so-called hexagon wrench into the hollow portion 8 and engaging with the engaging portion 10. And turning it.

The present invention is not limited to the illustrated embodiment but can be modified. For example, the engaging portion need not be hexagonal, but may have two parallel planes. Further, the screw portion may be a female screw instead of a male screw.

[0025]

As described above, according to the present invention, a hollow columnar body having a guide hole for receiving a guide pin for guiding a mating connector is made of metal, and a screw portion for screwing the hollow columnar body to a housing is provided. And an engagement portion for engaging with a tool for rotating the hollow columnar body for screwing is provided in the hollow portion. Therefore, the hollow columnar body is reduced in diameter while ensuring strength and the hollow columnar body is secured. Can be arranged close to the side surface of the projecting portion of the housing for holding the contact, which contributes to downsizing of the connector.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing a connector and a mating connector according to an embodiment of the present invention.

FIG. 2 is a partially broken perspective view showing a relationship between a hollow columnar body used in the connector of FIG. 1 and a guide pin of a mating connector.

FIG. 3 is a half sectional front view of the hollow columnar body of FIG. 2;

FIG. 4 is a perspective view of a conventional connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector 2 Housing (body) 6 Hollow columnar body 7 Guide hole 8 Hollow part 9A Contact piece 12 Screw part 32 Guide pin

Claims (2)

[Claims] 1. An electric connector having a guide hole for receiving a guide pin provided in a mating connector, wherein the guide hole is formed of a metal hollow column screwed into a housing of the electric connector or a member connected to the housing. An engaging portion having a polygonal inner peripheral surface for engaging with a rotating tool is provided on a part of the inner surface of the hollow portion, the hollow columnar body being formed as a hollow portion opened at one end of the body. An electric connector characterized in that the other end is provided with a screw portion for screwing. 2. A contact piece for elastic contact with a guide pin is accommodated in a hollow portion, and the screw portion can be brought into contact with a ground terminal held by a housing when the hollow columnar body is screwed and mounted. The electrical connector according to claim 1.