JPS6017795Y2 - spring contact - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spring contactor for a connection part for the purpose of conducting current, such as a draw-out switch or a busbar connection part, in particular a connection part of a gas-insulated busbar.

Conventionally, this type of spring contact has a structure as shown in Figures 1 and 2 of the accompanying drawings, which are combined as shown in Figure 3 and attached as shown in Figure 4. I was using it.

Hereinafter, this conventional spring contactor will be explained. As shown in FIG. As shown in - By binding through string 3,
As shown in FIG. 4, a spring contact 6 was constructed by arranging a plurality of contact pieces 1 on the outer periphery of the contact mounting portion 5 of conductor #4.

In this way, by inserting the conductor 7 to be connected into the conductor 4 on which the spring contact 6 is attached, the contact surface 8 of the conductor 7 and the peak part 9 of the contact piece 1 are connected to the spring contact piece 1. Depending on the performance, they were pressed together to form an electrical connection between the conductor 4 and the conductor 7.

However, since the conventional spring contactor is configured and assembled as described above, it is extremely difficult to assemble and install the contactor, and moreover, the work requires a long time.

Further, each contact piece 1 is attached to both end wall surfaces 10 of the contact mounting portion 5.
．． 10' restricts the movement of both ends, the deflection of each contact piece 1 is small relative to the contact pressure applied to each contact piece 1, and therefore the insertion force of the conductor 7 into the conductor 4 is extremely small. It also had the disadvantage of requiring a great deal of force.

The purpose of the present invention is to obtain a spring contactor that eliminates such conventional drawbacks. and has a plurality of movable contact fingers of a cantilever structure having a spring property protruding from one side in parallel, and the movable contact fingers have a mountain-like contact portion forming a contact point at an intermediate portion thereof. It is characterized by the presence of

Hereinafter, the present invention will be explained based on the accompanying drawings showing one embodiment thereof.

In FIGS. 5 and 6, the spring contactor 21 is shaped like a single strip and is made of a material that has spring properties and conductivity.

This spring contactor 21 has a movable contact finger 23 protruding from one side 22 thereof, which is formed into a cantilevered structure by punching and forming the movable contact finger 23 diagonally, for example, with an inclination of 5 to 40 degrees, leaving one side 24. A plurality of them are formed and arranged in parallel at predetermined intervals.

Further, in order to form a movable contact point 25 at one point in the middle of the movable contact finger 23, for example, a portion thereof is bent to form a mountain-like contact portion.

Also, on the back surface 26, there are protruding fixed side contact points 27.27.
' are provided on both sides of each movable contact finger 23 in the longitudinal direction, and each fixed side contact point 27, 27' and movable contact point 25 mutually constitute the vertices of a triangle, each fully contacting each conductor. is formed in such a way that it comes into contact with the

The spring contactor 21 is constructed in this way, but in order to attach it to a conductor, as shown in FIG. As shown in the figure, the conductor 28 is inserted into the mounting groove 29 and mounted.

The present invention is constructed as described above, and its operation and effects will be explained next.

When the conductor 30 to be connected is inserted into the conductor 28 in which the spring contactor 21 is mounted in the mounting groove 29 of the conductor 28, the outer diameter of the contact portion 31 of the conductor 30 is aligned with the opposing movable contact point 2.
The contact portion 31 displaces the movable contact point 25 and enters because it is made larger than the distance between the five comrades.

In this case, since the movable contact finger 23 has a cantilevered structure, it is extremely easy to retract the movable contact point 25, that is, the tip of the movable contact finger 23 by inserting the conductor 30, and the connection between the conductor 28 and the conductor 30 is extremely easy. The movable contact finger 23 can be connected to the movable contact finger 23 without requiring any great force.
That is, the contact pressure between the spring contactor 21 and the conductor 30 is sufficient, and the electrical connection between the two is also satisfactory.

The connection between the spring contactor 21 and the conductor 28 is achieved by the elasticity of the spring contactor 21, that is, the spring property that tends to return to a straight line, and by the insertion of the conductor 30, which results in a large number of fixed side contact points 2.
A fixed pressure contact between 7.27' and the bottom of the mounting groove 29 is sufficient to establish an electrical connection.

In this way, the spring contact 21 can be easily attached to the conductor 28 by simply rolling the spring contact 21 and inserting it, based on the tension caused by its elasticity. There is no difficulty in the work of arranging and binding on the circumference, and no long time work is required, and the movable contact finger 23 has a cantilevered structure when connecting the conductor 28 and the conductor 30. Therefore, there is sufficient deflection, the force required for connection is much smaller than that of conventional devices, and the connection is easy.

Note that the flow of current when energizing from the conductor 30 to the conductor 28 via the spring contact 21 is as follows:
passes through the movable contact point 25 along the arrow A, moves the movable contact finger 23 along the arrow B to the spring contact 21, where the current ■ is shunted into the current '19■2 and flows along the arrows C and D. It is believed that the current flows through the fixed side contact points 27' and 27, respectively, and into the conductor 28 to make an electrical connection.

In this case, when a large current flows for a short time, the electromagnetic force generated thereby is repelled by the current 12 flowing through the fixed contact point 27' and the current flowing through the movable contact finger 23, and therefore is pressed against the conductor 30,
Also, at the same time, the fixed contact points 27, 27' are pressed against the conductor 28, increasing the contact pressure at both the movable and fixed liquid contact points.

As a result, there is also an effect that repulsion between each contact point and the conductor based on electromagnetic force due to short-time energization has no effect.

In addition, in FIG. 8, the movable contact finger 23 is mounted facing forward, but this is not necessarily the case, and it may be mounted facing backward. Although the spring contactor is molded, the present invention is not limited to this, and a separate movable contact finger may be integrally fixed to the spring contactor.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a contact piece of a conventional spring contact, Fig. 2 is a right side view thereof, Fig. 3 is a plan view of a spring contact formed by connecting contact pieces, and Fig. 4 is a plan view of a contact piece of a conventional spring contact. 5 is a plan view of an embodiment of the present invention, FIG. 6 is a left side view thereof, and FIG. 7 is a plan view of the device rolled up into a ring shape.
FIG. 8 is a longitudinal sectional view of the device attached to a conductor, and FIG. 9 is an explanatory cross-sectional view showing the flow of current in the vicinity of the contact points of both liquids. 1...Contact piece, 2...Key, 3...
...String, 4.7...Conductor, 5...
・Contact mounting part, 6, 21...Spring contact, bottom...Contact surface, 9...Mountain part, 10.10'
...Wall surface, 22...One side, 23...
...Movable contact finger, 24...One side, 2
5...Movable contact point, 26...Back side, 2
7, 27'... Fixed side contact point, 28, 30...
...Conductor, 29...Mounting groove.

Claims (3)

[Scope of utility model registration request] (1) The movable contact fingers are strip-shaped and have spring properties and conductivity, and have a plurality of movable contact fingers of a cantilever structure having spring properties protruding from one side in parallel, and the movable contact fingers are arranged in parallel. A spring contactor characterized in that a mountain-shaped movable contact point is formed in the middle part thereof, and a fixed contact part is formed on the back side. (2) The spring contactor according to claim 1, wherein the fixed contact portion is two protruding fixed side contact points provided on both sides of the longitudinal line of each movable contact finger. . (3) A spring contact according to claim 1 or 2, wherein the tip of each movable contact finger faces the conductor connected to the conductor to which the spring contact is attached. Child.