JPS5927030Y2 - jack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a jack having a movable contact that can be changed from a first fixed contact to a second fixed contact by inserting a plug.

General (= A contact whose deflection state can be changed by external force is called a movable contact, and is placed on the side of this movable contact.
A contact that comes into contact with and separates from a movable contact is called a fixed contact.

In particular, a switching contact is one in which a fixed contact is provided on each side of a movable contact so that the connection state with the movable contact is reversed.

Incidentally, a jack that forms an electric circuit in pair with a plug is often provided with a switching contact in addition to a connecting terminal that makes elastic contact with the pointed head of the plug. It is possible to interrupt the electrical circuit.

Figure 1 is a sectional view showing the structure of this jack, with case 1
Connection terminals 3 and 4 are provided inside the plug 2 to form an electric circuit by making elastic contact with the plug 2, and the elastic contact portions 3a,
4a abut on predetermined positions of the plug 2, and the soldered ends 3b and 4b are fixed in a state where they are drawn out from the case 1.

Further, inside the case 1, there are provided a movable contact 6 bent into a V-shape constituting a switching contact, and fixed contacts 5 and 7 that make elastic contact with the movable contact 6, respectively. By inserting the plug 2, the movable contact 6 and the fixed contact 7 are brought into contact with each other, and by pulling out the plug 2, the movable contact 6 and the fixed contact 5 are brought into contact with each other.

In this case, the V-shaped movable contact 6 is soldered so that the end 6b is pulled out of the case 1, and the head of the plug 2 is fixed approximately in the middle of the elastic contact portion 6a. An insulating contact piece 6d against which is pressed is provided,
With this contact piece 6d as a boundary, the free end contacts the elastic contact portion 7a of the fixed contact 7, and the side closer to the bending point contacts the elastic contact portion 5a of the fixed contact 5, respectively.

Note that the fixed contacts 5 and 7 are individually soldered with their ends 5b and 7b also pulled out of the case 1.

In such a conventional jack, although the elasticity of the movable contact 6 sufficiently acts on the fixed contact 5, the dimension from the contact piece 6d to the contact position with respect to the fixed contact 7 is small. The elasticity of the movable contactor 6 itself was extremely small.

Therefore, in order to exert sufficient elasticity between the movable contact 6 and the fixed contact 7, the fixed contact 7 must also have elasticity.

As is well known, fine adjustments are required to obtain the desired elasticity by shaping the spring material, and in order to provide one switching contact in the jack, the movable contact 6 is squared, and the fixed contact 7 is However, providing elasticity significantly reduces workability and wastes spring material.

This invention was made to eliminate the above-mentioned drawbacks.
Two types of elasticity are generated in the movable contact itself,
The purpose of the present invention is to provide a jack that improves workability when assembling the jack and can save on spring material.

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a partial sectional view showing the structure of the jack according to the present invention, in which FIG. 2a shows the state before the plug is inserted, and FIG.

In FIG. 2, the fixed contacts 5 and 7 are made of conductive non-spring rods, and only the movable contact 6 is made of a conductive spring material.

This movable contactor 6 is provided with an insulating contact piece 6d in the middle thereof, and is bent into a U-shape near this contact piece 6d.

Thus, the end of the spring material on one side provided with the contact piece 6d is fixed to the case 1, and is bent so that the vicinity 6C of the contact piece 6d comes into elastic contact with the fixed contact 5.

On the other hand, the spring material end 6a on the other side of the U-shaped bent portion, which does not include the contact piece 6d, faces the fixed contact 7, so that it comes into elastic contact with the fixed contact 7 when the plug 2 is inserted. It is located in

If the movable contact 6 is configured in this way, sufficient elasticity is stored in the U-shaped bent portion, and even if the contact piece 6d is restrained by the plug 2, the movable contact 6 and the fixed contact 7, sufficient elasticity will act between them.

That is, by fixing one end of the spring material bent in a U-shape to the case, appropriately determining the dimension from this fixed end to the fixed contact 6, and bending this part, the fixed contact 6
By appropriately determining the length and bending angle of the free end bent into a U-shape, the required elasticity can be obtained between the fixed contact 7 and the fixed contact 7. .

As a result, two types of elasticity can be generated in the elastic contactor itself.

In the above embodiments, an elastic contact made by bending a conductive spring material into a U-shape is described, but the same effect can be obtained by bending the conductive spring material not only into a U-shape but also into a V-shape. .

As is clear from the above description, according to the jack of the present invention, a movable contact formed in a U or V shape made of a spring material is interposed between the first fixed contact and the second fixed contact. Since the movable contact itself can generate two types of elasticity, it is not only unnecessary to form the fixed contact with a spring material, but also one of the fixed contacts can be made of less material, reducing material costs. In addition, since the spring material only requires a movable contact, workability during assembly can be improved.
Moreover, it can prevent the occurrence of chattering bounce when the movable contact comes into contact with the fixed contact.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing the configuration of a conventional jack, Figure 2a
, l) is a partial sectional view showing the structure of an embodiment of the jack according to the present invention. 1... Case, 2... Plug, 3, 4
...Connection terminal, 5゜7...Fixed contact, 6...Movable contact.

Claims (1)

[Scope of utility model registration request] In a jack equipped with a movable contact whose connection is changed from a first fixed contact to a second fixed contact by insertion of a plug, an insulating contact piece is provided in the middle of a conductive spring material, and this contact A movable contact is formed by bending the spring material into a U or V shape near the piece, and the side on which the contact piece is provided from the bent part of the movable contact is always connected to the first fixed contact. In addition to making elastic contact, the end on the side where the contact piece is provided is fixed, and the head of the plug comes into contact with the contact piece, so that the side where the contact piece is not provided is a movable contact from the bent part of the movable contact. and the second fixed contact on the opposite side of the first fixed contact.
A jack having a free end so as to come into elastic contact with a fixed contact.