JPS6312512Y2 - - Google Patents

Description

[Detailed description of the invention] This invention controls the opening and closing of the switch member by swinging the lever member from the neutral position to the right or left, and also automatically returns the lever member to the neutral position when the user releases the operating hand. Regarding the improvement of the lever switch that allows it to return to its original position, it uses a single automatic return spring.
The lever member is configured to automatically return with almost the same elasticity when it swings in either the left or right direction, and its purpose is usually to use two automatic return springs. The purpose of the present invention is to provide a compact lever switch by using only one lever switch.

As shown in FIG. 1, the conventional left-right swing type lever switch has a switch operating member c that swings in response to the operation of the operating portion of the lever member b inside the switch body a.
and one return spring d, d' is attached to each side of the operating member, and a space corresponding to the compressed volume of each automatic return spring d, d' is provided inside the body a. This made it difficult to downsize the device. The present invention solves these problems.

An embodiment of the present invention will be described with reference to FIGS. 2-5.

1 is a body composed of a circular trunk-shaped main body 2 with an open front side and an insulating lid 3 that closes the open part, and a metal substrate 4 is fixed inside the main body 2, The inner end of the central shaft 5 passing through the center of the lid 3 is inserted into the substrate 4 and fixed. Reference numeral 7 denotes a lever member which is separated by a spacer 6 on the front side of the substrate 4 and is fitted to the center shaft 5 so as to be swingable left and right, and has an operating portion 8 protruding from the outer periphery of the main body 2. The front side of the lever member 7 is in contact with the inner periphery of the main body 2, and together with the lever member 7, can be pivoted from the neutral position to the right or left as shown in FIG.
A switch operating member 9 that rotates is fitted onto the central shaft 5 and fixed to the lever member 7 as appropriate.

An L-shaped arm 1 is located between the substrate 4 and the lever member 7.
0 and its bent portion is pivotally supported on the board 4 as shown in FIG. Arm pin 12 on the other end
A return spring 13 is attached to rotate the switch in the clockwise direction, and the end of the spring 13 is fixed to the substrate 4 by a pin member 14.

The lever member 7 has a second
A triangular cam hole 14 is provided with the center edge 15 facing upward when in the neutral position shown in the figure, and the cam edges 16 and 17 on both sides are widened in a symmetrical shape, and the arm 9
The arm pin 12 is passed through the cam hole 14 and brought into contact with the center edge 15 by the elasticity of the return spring 13.

The switch operating member 9 is a contact holder in this embodiment, and a movable contact 19 and a contact pressure spring 20 for pushing out the contact are fitted from a surface corresponding to the lid 3, and the contact 19 is attached to the lid plate. Press against the inner surface of 3. A fixed contact 2 connected to a power source is provided on the inner surface of the cover plate 3 made of an insulating material.
1 and the fixed contacts 22 and 23 of the left and right loads are attached, and the movable contact 19 is brought into contact with the fixed contact 21 when the lever member 7 etc. are in the neutral position as shown in FIG.

In the embodiment described above, when the operating portion 8 of the lever member 7 is pinched and the lever member 7 and the switch operating member 9 are swung to the oscillating position as shown in FIG.
Since the arm pin 12 moves so as to contact the cam edge 17, the arm 10 rotates counterclockwise around the shaft 11, extending the return spring 13, and at the same time brings the movable contact 19 into contact with the fixed contacts 22, 23. This causes the switch to turn on. When the operation part 8 is released, the elasticity stored in the return spring 13 causes the arm 1 to move.
0 rotates clockwise and the arm pin 12 rotates while remaining in contact with the cam edge 17, so the lever member 7 and the switch operating member 9 automatically return to the neutral position, and the arm pin 12 is moved to the center edge 16. At the same time, the movable contact 19 contacts only the fixed contact 22.

When the lever member 7 and the switch operating member 9 are swung to the position, the arm pin 12 touches the cam edge 1.
8, the arm 10 is rotated in the same counterclockwise direction as described above, and the movable contact 19 is brought into contact with the stationary contacts 22, 24 to cause the switch-on operation. The return to the neutral position is based on the automatic return from the swing position.

In the above, the switch operating member 9 includes switch members 31 and 32 consisting of opposing contacts as shown in FIG.
The switch member operated by the switch operating member 9 may have any configuration.

As exemplified above, the present invention has a cam hole 1 provided in the lever member 7 with an arm pin 12 of the arm 11 equipped with one return spring 13 acting in one direction.
5, the lever member 7 and the switch operating member 9 are placed in the neutral position by being inscribed in the center edge 16 of the switch member 5, so that the one return spring can automatically return to the neutral position from the rightward or leftward swinging position. 13, by attaching the return spring 13, the dedicated space that must be provided can be reduced in size, making the lever switch more compact, and the automatic return action can always be made uniform by the same behavior of the return spring 13. This has the effect of eliminating constraints such as balancing the spring elasticity as in the case of using two return springs as illustrated in FIG.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of a conventional lever switch, and Figs. 2 to 5 show an embodiment of the present invention.
Figure 2 is a front view taken along line A-A in Figure 3.
The figure is a side view taken along the line B--B in FIG. 2, and FIG. 4 is a front view taken along the line C--C in FIG. 3, showing the state in which the lever member 7 is swung to the position. FIG. 5 is a partially exploded perspective view. FIG. 6 is a front view of a portion of another embodiment. 1→Body, 7→Lever member, 8→Operation section, 9
→Switch operation member, 10→Arm, 11→Axis,
12 → arm pin, 13 → return spring, 15 → cam hole, 16 → center edge, 17, 18 → cam edge.

Claims (1)

[Scope of utility model registration request] A lever member that is pivotally supported on the body and can be pivoted from a neutral position to the right or left by operating the operating section, a switch operating member that pivots together with the lever member, and a central portion between both ends that is pivotable to the body. An arm pin is protruded from one end of the arm, and an automatic return spring is attached to the other end. A triangular cam hole is provided which expands symmetrically in the left and right direction, and the arm pin is passed through the cam hole and engaged with the center edge by the elasticity of the automatic return spring. 1. A lever switch comprising a switch member whose opening/closing is controlled by the switch operating member even when the lever switch is swung.