JPH04341716A - Pulse switch - Google Patents

Abstract

PURPOSE:To provide a pulse switch used for consumer and industrical apparatus and so especially composed as to surely generate ON-OFF signals even if a shaft is turned at high speed. CONSTITUTION:An entitled pulse switch is composed of a fixed conducting plate 2 held by a case 1 and a movable conducting plate 4 of an elastic body, a click tooth 7a provided on a rotary plate 7 movably supported by this case 1 and a conductive ball 6 arranged between this click tooth 7a and the movable conducting plate 4. And, the fixed conducting plate 2 and the movable conducting plate 4 are made to be connected and separated by turning the rotary plate 7 by the click tooth 7a and through the ball 6 in order to generate ON-OFF signals.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulse switch used in consumer and industrial equipment.

0002

2. Description of the Related Art A conventional technique will be explained using a pulse switch shown in FIG. According to the figure, 12 is a fixed conductive plate;
It is electrically connected to the terminal 13 and is held in a case 11 made of an insulating material together with a movable conductive plate 14 made of an elastic body and electrically connected to the terminal 15 in parallel with the fixed conductive plate 12 . Reference numeral 16 denotes a switching plate, which moves along the guide 11a and includes a rotating plate 17 having cam teeth 17a on the outer periphery and the switching plate 1.
They are engaged by a cam 16a made of a rigid body located at the center of an elastic body 16b that is integrated with the elastic body 6. The rotating plate 17 can be rotated from the outside by fitting a shaft 18 into a bearing 19a formed on the cover plate 19 and a bearing 11b formed on the case 11.

Next, the operation will be explained. When the shaft 18 is rotated, the rotary plate 17 also rotates. At this time, the cam teeth 17a and the cam 16a are engaged, so the switching plate 16 moves along the guide 11a and rotates the rotary plate 17. Move tangentially to the rotation. The switching plate 16 pushes the movable conductive plate 14 and comes into contact with the fixed conductive plate 12, thereby making the movable conductive plate 14 and the fixed conductive plate 12 electrically conductive. Furthermore, even if the rotating plate 17 is rotated, the switching plate 16 does not move, so the cam 16a pushes up the elastic body 16b, and when the cam 16a gets over the cam teeth 17a, the cam 16a pushes up the cam teeth 17a and 17b due to the restoring force of the elastic body 16b. Since the switching plate 16 returns to the center, the movable conductive plate 14 returns to the initial state and the movable conductive plate 1
4 and the fixed conductive plate 12 are in an insulated state.

0004

However, in the conventional pulse switch described above, friction between the switching plate 16 and the guide 11a of the case 11, and between the cam teeth 17a of the rotary plate 17 and the cam 16a of the switching plate 16 is caused. Large switching plate 16
has a large own weight, so when the rotary plate 17 is rotated at high speed, the movable conductive plate 14 and the fixed conductive plate 12 remain in contact with each other.
Since the switch does not turn on or off, no signal can be generated, and the movable conductive plate easily deforms when assembling the switch, making it difficult to assemble.

[0005] The present invention is intended to solve these conventional problems, and it is an object of the present invention to provide an excellent pulse switch that can generate a signal even when the rotating plate is rotated at high speed and is easy to assemble. be.

[0006]

[Means for Solving the Problems] In order to solve the above problems, the present invention uses a conductive rolling member as the switching plate, and brings the conductive rolling member into contact with two fixed conductive plates. It provides electrical continuity between the conductive plates.

[0007]

[Operation] By using the switching plate as an electrically conductive rolling member as in the above configuration, and using the electrically conductive rolling member to establish continuity between the fixed electrically conductive plates, signals can be detected even when the rotating plate rotates at high speed. and is easy to assemble.

[0008]

[Example] An example of the pulse switch of the present invention is shown in Figs.
This will be explained with reference to FIG. Reference numeral 2 denotes a pair of fixed conductive plates having an arbitrary gap, which are electrically connected to the terminal 3, located between the fixed conductive plates 2 and insulated from the fixed conductive plates 2, and connected to the terminal 5.
It is held in a case 1 made of an insulating material together with a movable conductive plate 4 made of an elastic body and electrically connected to the case 1 made of an insulating material. A conductive ball 6 is movable along a curved guide 1a, and is pressed by the movable conductive plate 4 against a rotary plate 7 having click teeth 7a on one side. The rotating plate 7 can be rotated from the outside by fitting a shaft 8 into a bearing 9a formed on the cover plate 9 and a bearing 1b formed on the case 1.

Next, the operation of the above embodiment will be explained.
When rotated, the rotating plate rotates 7 times, and at this time the click tooth 7a
Since the balls 6 are pressed against and meshed with the movable conductive plate 4, the balls 6 move in the direction of rotation of the rotating plate 6 along the guide 1a. The ball 6 then comes into contact with the fixed conductive plate 2 to electrically connect the movable conductive plate 4 and the fixed conductive plate 2. When the rotating plate 7 is further rotated, the ball 6 does not move, so the ball 6 pushes down the movable conductive plate 4, and the ball 6
When the ball 6 passes over the click tooth 7a, the ball 6 moves between the click tooth 7a and the click tooth 7b due to the restoring force of the movable conductive plate 4, so the ball 6 returns to the center and becomes insulated from the fixed conductive plate 2. The movable conductive plate 4 and the fixed conductive plate 2 change from on to off state.

As described above, according to the above embodiment, the ball 6
Since the friction between the ball 6 and the guide 1a of the case 1 and the click tooth 7A of the rotary plate 7 is small and the weight of the ball 6 is also small, the rotary plate 7 Even when the pulse switch is rotated at high speed, it is possible to detect whether the signal is on or off, and since each part is not easily deformed, the pulse switch can be easily assembled.

Although the guide 1a is formed from a curved line in the above embodiment, it may also be formed into a straight line. Further, as shown in FIG. 3, click teeth 7C of the same phase are provided on the opposite side of the click teeth 7A with which the ball 6 is in contact on the rotary plate 7 of the above embodiment, and are in contact with the click teeth 7C and fixed with the cover plate 9. By providing the click spring 10, it is also possible to obtain the effect of stabilizing the position of the ball 6 when it is not operated.

0012

[Effects of the Invention] As is clear from the above embodiment, the present invention switches the signal on and off using the ball, and the friction between the ball and the guide of the case and the click teeth of the rotary plate is small. Since the weight of the ball is small, signals can be generated even when the rotating plate is rotated at high speed, and the pulse switch can be easily assembled because each component is not easily deformed.

[Brief explanation of the drawing]

FIG. 1: (a) Front view of a pulse switch in a first embodiment of the present invention; (b) Same-side sectional view;

[Figure 2] (a) to (c) Diagram explaining the same operation

FIG. 3 is a side sectional view of a pulse switch in another embodiment of the present invention.

[Figure 4] (a) Front view of a conventional pulse switch (b) Same side sectional view

[Explanation of symbols]

1 case 2 Fixed conductive plate 3 Terminal 4 Movable conductive plate 5 Terminal 6 Ball 7 Rotating plate 7A Click tooth

Claims (2)

[Claims] Claim 1: At least a fixed conductive plate electrically connected to a terminal, and a movable conductive plate made of an elastic body and electrically connected to another terminal provided with a gap between the fixed conductive plate and the fixed conductive plate. ,
A case made of an insulating material that holds them, a conductive rolling member that moves along a guide on the inner wall of the case and is in contact with the movable conductive plate, and a click tooth that has click teeth on one side. A pulse switch consisting of a rotating plate in which the rotating member contacts the rolling member. 2. The rotary plate according to claim 1, comprising: a rotary plate having other click teeth in the same phase on the opposite side of the click teeth in contact with the conductive rolling member; and a click spring in contact with the click teeth. pulse switch.