JPH0878079A - Connector and socket contact - Google Patents

Abstract

PURPOSE: To prevent the insertion of a finger and prevent possible dangers of electric shock incident by installing an insulating rod-like body which is extended to an open end face in parallel to the axial direction in the inside of a tip cylindrical part to be fitted with a pin contact. CONSTITUTION: A receptacle 1 having a socket contact has an insulating body 12 held in a housing 11 and a socket contact 14 is fixed and held in a hole part 13 formed in the insulating body 12. The socket contact 14 has a tip cylindrical part 14a, whose end is opened, at one end and the rear end of the socket contact 14 is connected with a conductor of a cable led from the outside. The socket contact 14 is coated with a thin cylindrical part 12a, which is a part of the insulating body 12, from the outside face of the tip cylindrical part 14a to the tip open end face. An insulating rod 15 fixed on the rear end of the tip cylindrical part 14a and extended forward from the rear end is installed in the inside of the tip cylindrical part 14a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector, and more particularly to a socket contact used therein.

[0002]

2. Description of the Related Art An electrical connector consists of a connector called a plug and a connector called a receptacle that fits with the plug, and has a pin contact and a socket contact, respectively. And an electrical-mechanical coupling between the and the receptacle. Each connector includes an insulator that holds the contact. Note that it is not always defined that the plug always has the pin contact and the receptacle always has the socket contact. In many cases, the plug has the socket contact and the receptacle has the pin contact.

By the way, the socket contact has a tip cylindrical portion for fitting with the pin contact, and is fixedly held by an insulator from at least a part of the tip cylindrical portion to the rear end portion. In most cases, the periphery of the tip end cylindrical portion of the socket contact is covered with an insulator so that the tip end surface and the side surface cannot be directly touched. This prevents the risk of electric shock even in the case of a connector handling high voltage.

[0004]

However, when dealing with a very high DC voltage (250V) such as a connector used in an electric vehicle, it is necessary to increase the cross-sectional area of the contact itself. The outer diameter of the pin contact is increased, and the inner diameter of the tip end cylindrical portion of the socket contact is also increased. Therefore, a finger easily enters the distal end cylindrical portion of the socket contact through the distal end opening, which may cause electric shock.

The present invention has been proposed in view of the above problems of the prior art. Even if the inner diameter of the distal end cylindrical portion of the socket contact is larger than the outer diameter of the finger, the finger remains inside the distal end cylindrical portion of the socket contact. It is an object of the present invention to provide a socket contact that can prevent an electric shock from entering and a connector using the socket contact.

[0006]

According to the present invention, an insulating member is provided which has a tip tubular portion for fitting with a pin contact, and extends inside the tip tubular portion in parallel to the axial direction to the opening end face. A socket contact characterized by having a sex rod-shaped body is obtained.

Further, it is possible to obtain a connector in which the socket contact is installed in an opening formed in an insulator, in which the insulator covers from the side surface of the distal end tubular portion of the socket contact to the opening edge surface. it can.

[0008]

According to the socket contact of the present invention and the connector using the socket contact, even if the inner diameter of the distal end tubular portion is larger than the outer diameter of the finger, the insulating rod-shaped body extending to the opening end face is provided therein. Therefore, even if an attempt is made to insert a finger into the distal end tubular portion from the outside, the insulating rod-shaped body interferes with the insertion and cannot be inserted, so the risk of electric shock is prevented.

The outer diameter of the insulating rod-shaped body may be selected so as to leave a small gap between the outer surface thereof and the inner surface of the distal end tubular portion that does not allow a finger to enter. However, if it is too large, the cross-sectional area of the pin contact becomes small, which is not preferable.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.

Referring to FIG. 1, there is shown a receptacle 1 having a socket contact according to the present invention and a plug 2 having a pin contact for mating therewith.

The receptacle 1 has an insulator 12 held in a housing 11, and a socket contact 14 is fixedly held in a hole 13 formed in the insulator 12. The socket contact 14 has one end
It has a front end cylindrical portion 14a having an open front end, and the rear end is connected to a conductor (not shown) of a cable introduced from the outside. The thin cylindrical portion 12a which is a part of the insulator 12 is covered from the outer surface of the distal end cylindrical portion 14a to the end opening edge surface. In addition, an insulator rod 15 is arranged inside the tip cylindrical portion 14a so as to be fixed to the rear end thereof and extend forward from there. The diameter and length of the insulator rod 15 are selected so that a finger does not enter the gap between the tip of the insulator rod 15 and the opening edge of the tip tubular portion 14a.

A removable cap 16 is preferably attached to the front surface of the receptacle 1. Plug 2
When the connection with is not made, the inside of the receptacle 1 is shielded from the outside and protected by the cap 16.

Similarly, the plug 2 has an insulator 22 held in a housing 21, and a pin contact 24 is fixedly held in a hole portion 23 formed in the insulator 22. The pin contact 24 is provided with an insulating coating 25 at its tip so that the pin contact 24 does not come into direct contact with the pin contact 24. Also, pin contact 2
4 is formed with a hole 26 extending rearward from the insulating coating 25 at the tip thereof. This hole portion 26 is used when the plug 2 is fitted into the receptacle 1 and the insulator rod 1 in the tip end cylindrical portion 14a of the socket contact 14 of the receptacle 1 is covered.
It is for receiving 5.

Although only one contact is shown in the above embodiment, a contact for connecting a zero-potential conductor may be provided in the same plug and receptacle for handling a direct current. Since the configuration is similar, illustration is omitted.

[0016]

As described above, even when the current capacity to be handled becomes high and the inner diameter of the tip end cylindrical portion of the socket contact must be made large enough to fit a finger, in the present invention, the tip end cylindrical shape of the socket contact. Since the insulative rod is provided inside the portion to prevent the invasion of fingers, it is possible to prevent the risk of electric shock and the like, and it is possible to provide a safe connector.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of the present invention.

[Explanation of symbols]

 1 Receptacle 2 Plug 11 Housing 12 Insulator 13 Hole 14 Socket Contact 14a Tip Cylindrical Part 15 Insulating Rod

Claims (2)

[Claims] 1. A connector in which a socket contact having a cylindrical tip portion for fitting with a pin contact of a mating connector is installed in an opening formed in an insulator, wherein the insulator is the cylindrical tip tip of the socket contact. A connector having a socket contact, characterized in that it has an insulating rod-shaped body that covers from the side surface of the portion to the opening edge surface and that extends to the opening end surface parallel to the axial direction inside the distal end cylindrical portion of the socket contact. . 2. The socket contact for use in the connector according to claim 1, further comprising a tip tubular portion for fitting with a pin contact, wherein the opening end face is parallel to the axial direction inside the tip tubular portion. A socket contact characterized by having an insulating rod-shaped body extending up to.