JPH0320983Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operation speed sensitive push switch which is characterized in that when the switch is operated at an operation speed above a predetermined value, the circuit is closed within a predetermined stroke.

Conventional push switches open and close circuits depending on the amount by which the operating knob is pressed, regardless of the operating speed of the operating knob. Therefore, even when it is necessary to change the switch immediately,
Conventional push switches have the inconvenience of being unable to operate the switch unless the operating knob is pushed down to a certain amount.

The present invention was devised to solve the above-mentioned problems of the conventional technology, and is an operation speed sensitive push switch that operates when the operation knob is operated at a speed higher than a predetermined value and the switch is activated when the operation knob is pushed in less than a specific amount. The purpose is to provide the following.

Hereinafter, preferred embodiments of the operation speed sensitive push switch according to the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 1 denotes a switch case, which has a substantially cylindrical shape, and one end of which has a reduced outer diameter and is provided with a mounting screw 1a for use in mounting the switch, and the other end is open and has a cylindrical shape. A female thread 1b is carved on the inner peripheral surface of the opening. The female screw 1
A step portion 1c is provided adjacent to the step portion 1c, and an inner peripheral surface 1d is formed adjacent to the step portion 1c.

Reference numeral 2 denotes an operation knob, which has a knob part 2a that is operated to operate the push switch, and a cylindrical part 2b, and a collar part 2c is protruded in an appropriate number or around the entire circumference at an appropriate position on the outer circumference of the cylindrical part 2b. It is set up.
The inner surface of the cylindrical portion 2b has a sliding surface 2d having a substantially circular cross section. The operation knob 2 is inserted through the opening of the switch case 1 and is configured to move freely forward and backward on the inner peripheral surface 1d of the switch case 1.

3 is a sliding surface 2 inside the cylindrical portion 2b of the operation knob 2;
d is a movable body that can be slid. The movable body 3 has a substantially piston shape, and has a groove 3a bored in its outer peripheral end. A sealing ring 4 is provided in the groove 3a.
is fitted. Further, a cylindrical protrusion 3b is provided at the center of the inner bottom surface of the movable body 3, and a cylindrical movable contact piece 6 is fitted into the protrusion 3b, and then a spring receiver 5 is attached to the movable contact piece 6. It is fitted into piece 6. A small hole 3c is bored in the bottom of the movable body 3, and the diameter and number of the small holes 3c are set appropriately as necessary. A collar portion 3d is provided around the open end of the movable body 3.

Reference numeral 7 denotes a ring-shaped spacer, which is inserted into the outer diameter cylindrical portion of the movable body 3 and is configured to abut against the collar portion 3d of the movable body 3 and stop.

The movable body 3, in which the seal ring 4, spring receiver 5, movable contact piece 6, and spacer 7 are assembled as described above, is inserted into the cylindrical interior 2b of the operating knob 2 with the first spring 8 interposed. It is incorporated into the switch case 1. With the above assembly configuration, a pressure chamber P is formed by inserting the movable body 3 into the cylindrical portion 2b of the operation knob 2.

Reference numeral 9 denotes a pole plate having an approximately disk-shaped outer shape, and a screw 9a is carved in the outer circular part of the pole plate, and the switch case 1
A ring-shaped groove 9b is bored in the surface to be mounted inside, and a spring receiving hole 9c having an appropriate depth is bored in the center. A terminal mounting hole 9 is located outside and symmetrically to the spring receiving hole 9c.
d and 9e are bored, and stepped portions 9f and 9g are provided in the terminal mounting holes 9d and 9e.

Reference numerals 10 and 11 denote fixed contact pieces, one end of which forms arcuate contact portions 10a and 11a, and the other end of which forms terminal portions 10b and 11b. At substantially central positions of the fixed contact pieces 10, 11, fixing claws 10c, 11c and protruding portions 10d, 11d are provided.

The fixed contact pieces 10 and 11 are inserted into terminal mounting holes 9d and 9e formed in the pole plate 9. At this time, the stepped portions 9 provided in the terminal mounting holes 9d and 9e
f, 9g and the claws 10c, 11 of the fixed contact pieces 10, 11
c is engaged, and the protrusions 10d and 11d of the fixed contact pieces 10 and 11 are engaged with an engaging part (not shown) provided on the pole plate 9, so that the fixed contact piece is attached to the pole plate 9. 10 and 11 are fixed.

The pole plate 9 to which the fixed contact pieces 10 and 11 are fixed has spring receivers 5 at both ends of the second spring.
The switch case 1 is screwed onto the switch case 1 while being received by the recess 5a and the spring receiving hole 9c of the pole plate 9. Also, at this time, the spacer 7 is held between the stepped portion 1c of the switch case 1 and the side surface of the pole plate 9, and
It is configured to serve as a receiver for the first spring 8 and a stopper for the movable body 3.

Next, the operation of the embodiment of the operation speed sensitive push switch according to the present invention will be explained based on the accompanying drawings.

First, the operation when the operating knob 2 is pushed in at a normal operating speed will be explained.

When the knob portion 2a of the operating knob 2 is pushed in the F direction, the movable body 3 maintains its position, slides on the sliding surface 2d of the operating knob 2, and enters the cylindrical portion 2b. At this time, the air in the pressure chamber P leaks from the small hole 3c formed in the movable body 3 and the fitting portion of the sealing ring 4, so that the pressure in the pressure chamber P does not rise. As the operation knob 2 is pushed further, the bottom 2e of the operation knob 2 and the head 3 of the movable body 3
e collides. Due to the impact, the movable body 3 moves in the F direction together with the operating knob 2, and when it moves to a certain position, the contact portions 10 of the fixed contact pieces 10, 11
a, 11a and the movable contact piece 6 contact, and the fixed contact piece 10
and 11 circuits are closed. After that, operation knob 2
When the push-in is released, the operating knob 2 returns to its original position due to the compressive force of the first spring 8. Furthermore, the movable body 3 also returns to its original position due to the compressive force of the second spring 12, and the fixed contact pieces 10, 1
1 circuit is opened.

Next, the operation when the operating knob 2 is pushed in at a predetermined operating speed or higher will be explained.

When the operating knob 2 is pushed in the direction F at a speed greater than a predetermined operating speed, the volume of the pressure chamber P decreases rapidly, so that the internal pressure of the pressure chamber P increases. The movable body 3 is pressed in the F direction by the high pressure in the pressure chamber P and moves. Therefore, the contact portion 10 of the fixed contact pieces 10, 11
a, 11a and the movable contact piece 6 contact, and the fixed contact piece 1
The circuit of 0 and 11 is closed. That is, operation knob 2
It becomes possible to operate the switch with a push stroke smaller than the push stroke required to operate the switch when the switch is pushed in at the normal operating speed.

The operating speed of the operation knob 2 that operates the switch is determined by the spring force of the second spring 12 that presses the movable body 3 in the direction of the operation knob 2 and the movable body 3.
This can be done freely by arbitrarily changing the size and number of the small holes 3c drilled in the head of the head.

The operating speed-sensitive push switch according to the present invention has the above-described configuration and operation, and thus has the following effects.

If the operating speed of the operating knob is operated at a speed higher than the specified speed, the switch will operate when the operating knob is pushed in less than the amount that the operating knob is pressed in response to the operating speed, so the switch should be switched immediately. Even when the need arises, it is possible to switch quickly and reliably.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the operating speed sensitive push switch according to the present invention, and FIG. 2 is an exploded perspective view of the embodiment shown in FIG. 1...Switch case, 2...Operation knob, 2a
...Knob part, 2b...Cylindrical part, 3...Movable body, 3
a...Groove, 3b...Protrusion, 3c...Small hole, 4...
... Seal ring, 5 Spring receiver, 6 ... Movable contact piece, 7 ... Spacer, 8 ... First spring, 9 ... Pole plate, 10, 11 ... Fixed contact piece, 12
...Second spring.

Claims (1)

[Claims for Utility Model Registration] When the operating knob is operated at a predetermined operating speed or higher, the circuit is closed with a stroke less than the predetermined stroke, and when the operating knob is operated at a speed slower than the predetermined operating speed, the predetermined stroke is completed. An operating speed-sensitive button switch that closes a circuit with a switch includes an operating knob that is inserted in a switch case so that it can move forward and backward and has a cylindrical part at the end, and an operating knob that is inserted into the cylindrical part provided on the operating knob so that it can move forward and backward, and that is slidable. a movable body that moves; a pressure chamber formed by the head of the movable body and the cylindrical portion; a small hole drilled in the movable body to allow air in and out of the pressure chamber; and a switch case. a pole plate fixed to the opening end and provided with a pair of fixed contact pieces; a movable contact piece installed at an appropriate part of the movable body to contact the fixed contact piece and close a circuit; and the operation. An operating speed sensitive push switch, comprising: a first spring for pushing back the knob; and a second spring for pushing the movable body back to a position where the movable contact piece opens a circuit.