JPS6336946Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a jack using a so-called wire contact formed by bending a wire member.

Conventionally, a jack for connecting a plug has generally used a plate-shaped contact made by punching and bending a metal plate. A jack using this type of plate-shaped contact has a plug insertion hole in the case, a contact insertion hole that crosses the plug insertion hole, and a plate-shaped contact that is fitted into the contact insertion hole to determine its position. The contact is integrally formed by punching out and bending various parts such as a positioning part, a contact plate spring part, a terminal part, and a locking piece for preventing slippage.

Jacks using such plate-shaped contacts have complicated shapes, so
There are limits to miniaturization, and there are also limits to cost reduction because multiple molding steps are required. Furthermore, the contacts had to be attached to the case manually, which caused problems in terms of workability.

To solve these problems, jacks using linear contacts made by bending metal wires have recently been developed.

As shown in FIG. 1, a jack using this linear contact uses a linear contact 3 in which the tip of the terminal part 3a is folded back and a plug contact part 3b is integrally molded. The structure was such that the portion 3a was fitted into a contact fitting groove 2a provided in the case 2 for positioning, and the lid body 4 was welded to the case 2 by ultrasonic welding to prevent the contact 3 from coming off.

However, such a contact positioning structure requires the lid 4, which increases the size of the contact, and there is a limit to miniaturization.

In view of the above-mentioned problems, the purpose of the present invention is to provide a jack using linear contacts that is easy to manufacture, can be made smaller, and can be assembled automatically. However, the case has a plug insertion sleeve on one end surface, a plug insertion hole communicating with the sleeve inside, and a contact insertion hole on the outer peripheral surface in a direction that intersects with the axial direction of the plug insertion hole. In the jack, the contact is inserted into the contact insertion hole with which a plug inserted into the plug insertion hole makes contact, and the contact is entirely formed of a wire material and includes a substantially straight terminal portion; It integrally has a plug contact part formed by folding back the tip of the terminal part, and the terminal part is integrally provided with a locking member that penetrates through the terminal part and has a locking protrusion protruding from the outer surface, The jack is characterized in that the locking member is fitted and locked into the contact insertion hole to prevent the contact from coming off.

Next, an example of the implementation of the present invention will be explained with reference to the drawings from FIG. 2 onwards.

In the figure, 10 is a jack according to the present invention, and 11
is a case, and 13 is a contact.

The case 11 consists of a case body 14 and a plug insertion sleeve 15 integrally protruding from one end of the case body 14. A plug insertion hole 16 is provided in the case body 14 in communication with the sleeve 15. Further, a plurality of contact insertion holes 17 are formed in the outer surface of the case 14 in a direction perpendicular to the axial direction of the plug insertion hole 16. This contact insertion hole 17 is formed so as to straddle the plug insertion hole 16, and one side thereof forms a terminal portion through hole 17c that penetrates the bottom of the case body 14.
This terminal portion through hole 17c has a circular enlarged diameter portion 17b.
is formed so that a locking member 12, which will be described later, is fitted therein, and an engaging groove 17a in which a locking protrusion 12a on the outer surface of the locking member 12 is engaged is formed on the inner surface of the enlarged diameter portion 17b. It is formed.

On the other hand, the contact 13 is formed by bending a metal wire, and has a straight terminal portion 13a on one end.
The plug contact portion 13b is integrally formed by folding back the tip of the terminal portion 13a into a figure 7 shape.

Further, the terminal portion 13a integrally has the locking member 12. This locking member 12 is formed into a cylindrical shape, and a terminal portion 13a is fitted in the center of the locking member 12 so as not to easily come off, and a locking protrusion 12a is provided protruding from the outer surface.

The contact 13 configured as described above is inserted into the contact insertion hole 17 by fitting the locking member 12 into the enlarged diameter portion 14b, and the locking protrusion 12a is engaged with the engagement groove 17a to prevent it from coming off. are doing. In this state, the plug contact portion 13b is exposed to the inner surface of the plug insertion hole 16, so that it comes into elastic contact with the inserted plug.

The jack of the present invention is constructed as described above, and since the contacts are linear contacts formed by bending a wire, fewer manufacturing steps are required compared to plate contacts, and miniaturization and cost reduction are achieved. The contact is locked to the case by fitting a locking member with a locking protrusion provided on the terminal portion of the contact into the enlarged diameter portion of the contact insertion hole. In addition to achieving miniaturization, assembly can be completed simply by press-fitting a contact integrally provided with a locking member into a contact insertion hole, making assembly easy to automate.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an example of a jack using a conventional linear contact, FIG. 2 is an exploded perspective view of an example of the implementation of the jack of the present invention, and FIG. 3 is a cross-sectional plan view of the same part. 10... Jack, 11... Case, 12...
Locking member, 12a... Locking protrusion, 15... Plug insertion sleeve, 16... Plug insertion hole, 17...
...Contact insertion hole, 17a...Engagement groove, 17b
... Expanded diameter part, 17c... Terminal part through hole.

Claims (1)

[Scope of utility model registration request] A case having a plug insertion sleeve on one end surface, a plug insertion hole communicating with the sleeve inside, and a contact insertion hole on the outer peripheral surface in a direction crossing the axial direction of the plug insertion hole, In a jack formed by inserting a contact into the contact insertion hole, which is in contact with a plug inserted into the plug insertion hole, the contact is entirely molded from a wire material, and includes a substantially straight terminal portion, and a terminal portion of the terminal portion. A plug contact portion having a folded-back tip is integrally provided, and the terminal portion is integrally provided with a locking member that penetrates through the terminal portion and has a locking protrusion protruding from the outer surface, and the locking member A jack characterized in that a member is fitted and locked into a contact insertion hole to prevent the contact from coming off.