JPS5941552Y2 - on off switch - Google Patents

Description

[Detailed description of the invention] This invention provides a contact point at the tip of a contact piece made of two conductive elastic strips, and moves one contact piece in the direction of the other contact piece against the elastic force of the contact piece. This invention relates to an on/off switch for maintaining the distance between both contact pieces at a predetermined size in a switch that is displaced to bring both contacts into contact and turn on.

In conventional switches of this kind, in order to perform the desired opening and closing operations, it is necessary to accurately adjust the distance between the two contact pieces one by one after assembly, which is extremely troublesome and requires a lot of time and effort. This was the case.

The purpose of the present invention is to eliminate a series of drawbacks and provide an on/off switch in which the distance between two contact pieces can be set to a predetermined size without the need for adjustment, and both contacts can be accurately brought into contact with each other through a constant drive stroke. In particular, it is a switch consisting of two parallel contact pieces that have a contact point at the tip and are fixed to a base. , a frame body made of an insulating material and having an inner diameter corresponding to a predetermined interval is fixed to the tips of both of the contact pieces, one contact piece is fixed to the wall of the frame body, and the other contact piece is fixed to the inner wall on the opposite side. It is characterized by being attached so that they are in contact with each other, and both contact pieces are kept at a predetermined distance.

The present invention will be explained in detail based on illustrated embodiments.

1 and 2 are longitudinal and transverse cross-sectional views showing an embodiment of an on-off switch according to the present invention, in which a pair of movable contact pieces 1 and fixed contact pieces 2 made of metal plate springs are approximately mutually connected. Arranged parallel to each other, the contact pieces 1 and 2 are fixed at their bases to a base 3 made of insulating material, for example by means of a mold base.

Further, contacts 4 and 5 are attached to the inside of the contact pieces 1 and 2 near their tips, respectively.

Furthermore, a rectangular cylindrical frame 6 made of an insulating material as shown in FIG. 3 is attached to the tips of these contact pieces 1 and 2.

Projections 9 and 10 are projected from both sides of the inner upper portions of the side walls 7 and 8 of the frame body 6, respectively, so that the movable contact piece 1 can be accommodated between them and the upper wall 11.

The tip of the movable contact piece 1 is connected to the upper wall 11 of the frame 6 and the protruding strip 9.10.
The contact 4 is exposed inside.

On the other hand, the fixed contact piece 2 has its contact point 5 facing upward and is in contact with the inside of the lower wall 12 of the frame 6.

Therefore, before mounting the frame 6, both contact pieces 1 and 2 are pushed apart slightly, so that both contact pieces 1 and 2 are completely separated when no driving force is applied to the movable contact piece 1. has been done.

Note that 13 is a protrusion for transmitting driving force to the frame body 6;
Reference numeral 4.15 indicates connection ends at the ends of the contact pieces 1 and 2 for connecting to lead wires by soldering or the like.

In this way, the movable contact piece 1 and the fixed contact piece 2 of the frame body 6 are
Although proper spacing is normally maintained, for example, by a driving member (not shown) such as a magnetic lever,
When a driving force is applied from above to below in the direction of the arrow shown in FIG. 4 through the protrusion 13, the frame 6 moves downward and also moves the movable contact piece 1 fixed to the frame downward. move it to

However, the fixed contact piece 2 is not restrained by the movement of the frame 6 and remains in the same position, so the contact point 4 of the movable contact piece 1 and the contact point 5 of the fixed contact piece 2 come into contact.

FIG. 5 shows another embodiment of the frame 6.
has a U-shaped cross section with one side wall missing, and the upper wall 1
A shelf 16 is provided near the top wall 11 and has its base on the side wall 7 in parallel with the top wall 11.
It is designed to be inserted between.

Since the length of the shelf 16 is sufficiently narrower than the length of the frame body 6, the contact point 4 of the movable contact piece 1 is exposed inside the frame body 6.

This embodiment has the same function as the previous embodiment, and its effects are almost the same.

The present invention is not limited to the above-described embodiments, but can be modified in various ways.

For example, when fixing the movable contact piece 1 to the frame body 6, molding may be used.

Further, in the embodiment, the movable contact piece 1 is fixed to the frame body 6, but it is also possible to fix the frame body 6 to the fixed contact piece 2.

As explained above, the on-off switch according to the present invention is
The distance between the movable contact piece and the fixed contact piece can be maintained appropriately using a frame body, eliminating the need for adjustment processes during manufacturing as in the past, and the distance does not change during use. , the life of the switch can be extended.

[Brief explanation of the drawing]

The drawings show an embodiment of the on/off switch according to the present invention, in which FIG. 1 is a longitudinal sectional view, FIG. 2 is a horizontal sectional view, and FIG.
FIG. 3 is a perspective view of the frame, FIG. 4 is an explanatory diagram of the operation, and FIG. 5 is a perspective view showing another embodiment of the frame. 1 is a movable contact piece, 2 is a fixed contact piece, 3 is a base, 4.5
is a contact, 6 is a frame, 7 and 8 are side walls, 9 and 10 are protrusions, 1
1 is a clay wall, 12 is a lower wall, and 16 is a shelf.

Claims (1)

[Scope of utility model registration request] A switch consisting of two parallel contact pieces that have a contact point at the tip and are fixed to a base, and these contact pieces are spread out a little more than a predetermined distance in advance, and a switch made of insulating material is made of an insulating material and is made of a predetermined distance. A frame body having an inner diameter corresponding to An on-off switch characterized by keeping the pieces at a predetermined distance.