JPH0218901Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a skeleton switch that moves a movable contact piece by the repulsive force of a reversing leaf spring.

[Prior Art] A conventional skeleton switch, for example, as shown in FIG.
and a second fixed contact piece 3 are protruded in parallel,
A movable contact piece 4 is arranged between the first fixed contact piece 2 and the second fixed contact piece 3. This movable contact piece 4
A reversing leaf spring 5 made of an arc-shaped thin steel plate is connected to the tip of the reversing leaf spring 5, and the reversing leaf spring 5 is connected to a stay 6 attached to the housing 1 so as to surround the second fixed contact piece 3.
the other end is connected. The connection of the reversing leaf spring 5 to the movable contact piece 4 and the stay 6 is normally made by fitting the tip of the reversing leaf spring 5 into a dovetail-shaped receiving part provided on the movable contact piece 4 and the stay 6, so that the reversal can be freely performed. It is designed to be.

Here, if no driving force is acting on the stay 6, a contact point (not shown) at the tip of the second fixed contact piece 3 and a contact point of the movable contact piece 4 come into contact to form a break joint. When the tip of the stay 6 is pushed in the direction of arrow P, when the stay 6 reaches a predetermined displacement, the reversing leaf spring 5 reverses as shown in FIG. is released and comes into contact with the contact point 8 of the first fixed contact piece 2 to form a make connection, and reliable contact is maintained by the spring force of the reversing leaf spring 5. However, in this method, the drive position of the stay 6 is limited to the inside of the housing 1, and there is no degree of freedom in the direction.
Because of the structure in which the contact pieces 2, 3, and 4 are arranged in parallel, there is an inconvenience that becomes an obstacle to miniaturization.

[Purpose of the invention] The purpose of the invention is to eliminate the above-mentioned drawbacks, select a switch in the driving direction according to the layout of the built-in switch, and provide a skeleton switch that can be miniaturized and serve as a replacement for a micro switch. There is a particular thing.

[Summary of the invention] The gist of the invention to achieve the above objectives is as follows:
In a skeleton switch in which a movable contact piece is displaced by the repulsive force of a reversing leaf spring, the reversing leaf spring is connected to the tip of the movable contact piece, and a shaft-shaped switch is provided in a direction perpendicular to the longitudinal direction of the movable contact piece. The skeleton switch is characterized in that the other end of the reversing leaf spring is connected to the shaft portion, and the reversing leaf spring is reversed by rotation of the shaft-shaped portion.

[Embodiments of the invention] The invention will be explained in detail based on the embodiments shown in FIG. 2 and below. Note that the same reference numerals as in FIG. 1 indicate the same or equivalent members.

In FIG. 2, a first fixed contact piece 2 and a second fixed contact piece 3 are protruded from the housing 1,
A movable contact piece 4 is provided between the first fixed contact piece 2 and the second fixed contact piece 3. A reversing leaf spring 5 is connected to the tip of the movable contact piece 4, and the other end of the reversing leaf spring 5 is connected to the end of the support piece 10. For this connection, as described above, separate members may be fitted together, or in some cases, the movable parts may be formed from the same material. Further, the other end of the support piece 10 is connected to a shaft 11, and this shaft 11 is rotatably supported by bearings 12 provided on the walls on both sides of the housing 1. A drive piece 13 extends on the opposite side. Note that the reversing leaf spring 5 may be directly connected to the shaft 11 without using the support piece 10.

In this case, the contact point 8 of the first fixed contact piece 2 and the contact point 7 of the movable contact piece 4 contact to form a break joint, but when the drive piece 13 is pushed down in the direction of arrow P, the shaft 11 When the support piece 10 is displaced upward due to the rotation of the support piece 10 and the tip of the support piece 10 reaches a certain position, the reversal leaf spring 5 instantaneously turns into an arc shape pointing in the opposite direction, and the movable contact piece 4 accordingly is displaced upward, and the contact point 7 comes into contact with the contact point of the second fixed contact piece 3 to form a make joint. At this time, due to the spring effect of the reversing leaf spring 5,
The contact of the contacts is reliably maintained. In this state, if the drive piece 13 is pushed up, the joined state shown in FIG. 2 will be achieved again.

FIGS. 3 and 4 are perspective views of main parts of other modifications. In FIG. 3, two bearings 14 are fixed to the wall of the housing 1, and both ends of a shaft 15 to which the support piece 10 is connected protrude to the outside of the housing 1 through the bearings 14. A drive frame 16 is fixed to the housing 1, and the drive frame 16 can be operated from the outside of the housing 1 in the direction of arrow P.

In FIG. 4, a shaft 17 is spanned between the walls on both sides of the housing 1, and a bearing 19, which fixes the support piece 10 and the drive piece 18, is rotatably attached around the shaft 17. ing. in this case,
The driving piece 18 may be pressed by a push button that operates within the housing 1, or may be operated from outside the housing 1.

[Effects of the invention] As explained above, the skeleton switch according to the invention transfers the movable contact piece by vertical operation inside or outside the housing, unlike the conventional one that uses a stay and presses from the top of the housing. Moreover, since the stay shown in FIG. 1 is not used, it has the advantage of being downsized.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional perspective view of a conventional skeleton switch; Fig. 2 and the following are examples of the skeleton switch according to the present invention; Fig. 2 is a partially sectional perspective view; 4 are perspective views of essential parts of other modifications, respectively. 1 is a housing, 2 and 3 are fixed contact pieces, 4 is a movable contact piece, 5 is a reversible leaf spring, 10 is a support piece, 1
1, 15, 17 are shafts, 12, 14, 19 are bearings,
13 and 18 are drive pieces, and 16 is a drive frame.

Claims (1)

[Claims for Utility Model Registration] 1. In a skeleton switch in which a movable contact piece is moved by the repulsive force of a reversing leaf spring, the reversing leaf spring is connected to the tip of the movable contact piece, and the movable contact piece is moved in the longitudinal direction of the movable contact piece. A skeleton switch characterized in that the other end of the reversing leaf spring is connected to a shaft-like part provided in a direction perpendicular to the other end, and the reversing leaf spring is reversed by rotation of the shaft-like part. 2. The skeleton switch according to claim 1, wherein the shaft portion is a shaft rotatably spanned between bearings provided on the wall of the housing. 3. The skeleton switch according to claim 1, wherein the shaft-shaped portion is a bearing rotatably disposed around a shaft extending over a wall of the housing.