JPH076575Y2 - Switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a so-called push-type switch device.

(Prior Art) Conventionally, in this type of switch device, an operation knob is movably provided in a switch case, and a contact holder is provided so as to move integrally with the operation knob. When the contact holder is moved from the original position to the push-in position, the contact holder is moved together with the operation knob to the operating position, and the movable contact of the contact holder comes into contact with the fixed contact on the switch case side, and the switch When the operation knob is turned on and the operation knob is returned to the original position from the pushing position, the contact holder is moved integrally with the operation knob to the non-operation position, and the movable contact is moved from the fixed contact. The switches are separated from each other to be in an off state.

(Problems to be Solved by the Problem) In the above-mentioned conventional structure, the contact holder having the movable contact moves integrally with the operation knob, and therefore the moving speed of the contact holder changes depending on how the operation knob is operated. For this reason, there is a drawback that chattering or arcing is likely to occur between the movable contact and the fixed contact.

Therefore, an object of the present invention is to provide a switch device capable of preventing chattering and arc generation in the switch as much as possible regardless of how to operate the operation knob.

[Means for Solving the Problems] (Means for Solving the Problems) According to the present invention, a switch case is movably provided with an operation knob which is moved in a pushing direction by a pressing operation, and the operation knob is opposed to a side surface of the operation knob. A movable member that moves between a first position and a second position in a direction parallel to the movement direction of the operation knob is movably provided, and when the movable member is located at the first position A switch whose state is switched depending on when it is positioned is provided, one of the operation knob and the movable member is provided with a moderation ridge having first and second slopes on both sides of the apex, and the other moderation ridge is provided. An indenter is provided that is urged in the direction of pressing against the operation knob and moves relatively along the moderation ridge when the operation knob moves. When the operation knob is moved from the original position in the pushing direction, the indenter is the first of the moderation ridge. On the second slope across the apex The movable member is moved from the first position to the second position by pressing, and the indenter moves on the second slope of the moderation ridge as the operation knob is moved from the pushing position toward the original position. It is characterized in that the movable member is moved from the second position to the first position by pressing the first inclined surface beyond.

In the above structure, the movable member is made of metal,
It is also possible that the movable member constitutes a movable contact of the switch.

(Operation) In the case of the one described above, when the operation knob and the movable member are separated and the operation knob is moved from the original position in the pushing direction, the indenter is pressed against the first slope of the moderation crest. When the movable member remains in the first position and the indenter presses the second slope beyond the apex of the moderation peak, the movable member instantly moves from the first position to the second position. Be moved. Further, when the operation knob is moved from the pushing position toward the original position, the movable member remains in the second position while the indenter is in pressure contact with the second slope of the moderation ridge, and When the first slope is pressed beyond the apex of the moderation mountain, the movable member is instantaneously moved from the second position to the first position. Therefore, the moving speed of the movable member can be constant and high regardless of how to operate the operation knob.
The switch is instantaneously switched as the movable member moves.

Moreover, the structure can be simplified by adopting a structure in which the movable member constitutes the movable contact of the switch.

(Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

Reference numeral 1 denotes a switch case having a substantially rectangular shape, one side surface of which is opened is covered with an insulator 2, and an operation knob storage portion 3 and a movable member storage portion 4 are formed inside so as to be adjacent to each other. Reference numeral 5 denotes an operation knob provided in the operation knob housing 3 so as to be movable in the vertical direction in FIG. 1, and is biased upward by the return spring 6 composed of a compression coil spring in the original position direction, and the upper portion is a switch. It projects upward through the hole 7 of the case 1. Reference numeral 8 denotes a rectangular rotor housing portion formed by opening the insulator 2 side in the middle portion of the operation knob 5, as shown in FIG.
Is rotatably stored. As shown in FIGS. 5 and 6, a cam groove 10 is continuously formed on the outer peripheral portion of the rotor 9 in three patterns over the entire circumference.
A lock recess 11 and first to fourth slope portions 12 to 15 are formed in the middle of 10. Reference numeral 16 denotes a lock protrusion protruding from the insulator 2 so as to be fitted into the cam groove 10 of the rotor 9. The lock protrusion 16 slides relatively along the cam groove 10 as the rotor 9 moves vertically with the operation knob 5. When the lock projection 16 is engaged with the lock recess 11 of the cam groove 10, the operation knob 5 is held in the pushing position shown in FIG.

Reference numeral 17 denotes a contact holder, which is a movable member housed in the movable member housing portion 4, and is moved in the vertical direction in FIG. 1 with one side facing the one side of the operation knob 5 and parallel to the moving direction of the operation knob 5. The first lower part shown in FIG.
And a second upper position shown in FIG. As shown in FIG. 3, a movable contact 19 biased toward the insulator 2 by a compression coil spring 18 is provided on the side surface of the contact holder 17 on the insulator 2 side. With the movement of 17, the sliding contact with the insulator 2 makes contact with and separates from the fixed contact 20 of the insulator 2. Switch by these movable contact 19 and fixed contact 20
Make up 21.

Reference numeral 22 is a moderation mountain projecting on one side of the contact holder 17 toward the operation knob 5 side.
The slope 24 is formed, and the second slope 25 is formed on the lower side. Reference numeral 26 is a ball as an indenter urged in the middle of the operation knob 5 by a compression coil spring 27 in a direction of pressing against the moderation ridge 22, and moves along the moderation ridge 22 as the operation knob 5 moves in the vertical direction. It is supposed to do.

Next, the operation of the above configuration will be described. With the operation knob 5 in the upper original position, as shown in FIG.
26 is in pressure contact with the first slope 24 on the upper side of the moderation mountain 22, and the contact holder 17 is located at the lower first position. As a result, the movable contact 19 is separated from the fixed contact 20 as shown in FIG. 3, and the switch 21 is in the off state. Also, this folding, the locking protrusion 16 of the insulator 2
Is located at the position indicated by "a" in the cam groove 10 of the rotor 9 as shown in FIG.

From this state, when the operation knob 5 is pushed in the direction of arrow A (downward) in FIG.
While in pressure contact with the first slope 24 of 22, the contact holder
When the ball 26 crosses the apex 23 of the moderation crest 22 downward while the 17 remains in the first position, the second slope 25 of the moderation crest 22 is pressed by the ball 26, whereby the contact holder 17 is moved. It instantaneously moves in the direction opposite to the arrow A (upward) from the first position and is positioned at the second upper position shown in FIG. By the movement of the contact holder 17, the movable contact 19 comes into contact with the fixed contact 20 and the switch 21 is turned on.
Further, the folding and locking projection 16 is provided with the cam groove 10 as shown by arrow B in FIG. 6 as the operation knob 5 moves in the direction of arrow A.
By relatively sliding along the first inclined portion 12 of the rotor 9, the rotor 9 is rotated in the direction of arrow C in FIG.
To the position of. Then, when the pressing of the operation knob 5 is released, the operation knob 5 is acted upon by the urging force of the return spring 6 and the counter arrow A
Direction, the lock convex portion 16 relatively slides along the second inclined portion 13 as shown by the arrow D, thereby rotating the rotor 9 slightly in the arrow C direction. The lock knob 11 is engaged and the operation knob 5 is held in the pushing position as shown in FIG.

Next, when the operation knob 5 is pressed again in the direction of arrow A from the state of FIG. 7, the lock projection 16 releases the engagement with the lock recess 11 as the operation knob 5 moves in the direction of arrow A. By relatively sliding along the third inclined portion 14 as shown by arrow E, the rotor 9 is further rotated in the direction of arrow C to reach the position of "C". In this state, the contact holder 17 is still in the second position. Then, when the pressing of the operation knob 5 is released, the lock projection 16 is moved to the cam groove as indicated by the arrow F as the operation knob 5 is moved in the direction opposite to the arrow A by the urging force of the return spring 6. By relatively sliding along the fourth inclined portion 15 of the rotor 10, the rotor 9 is rotated in the direction of arrow C to reach the position "a" in the next cam groove 10, and the operation knob 5 is moved to the original position. Will be returned to. During this folding, when the operation knob 5 is returned to the original position, the contact holder 17 remains in the second position while the ball 26 is in pressure contact with the second slope 25 of the moderation crest 22. When 26 exceeds the apex 23 upward, the first slope 24 is pressed by the ball 26, which causes the contact holder 17 to instantaneously move from the second position in the direction of the arrow A to the first position shown in FIG. Is located in position. By this movement of the contact holder 17, the movable contact 19 is separated from the fixed contact 20, and the switch 21 is turned off.

According to the above-described embodiment, the operation knob 5 and the contact holder 17 are separated, and the contact holder 17 remains in the same position until the operation knob 5 is moved and the ball 26 crosses the apex 23 of the moderation crest 22. When the ball 26 is held and the ball 26 crosses the apex 23, the contact holder 17 is instantaneously moved to switch the switch 21, so that the contact holder 17 can be moved at a constant and high speed regardless of how the operation knob 5 is operated. You can do it. Therefore, since the switch 21 is switched instantly regardless of how the operation knob 5 is operated, the movable contact 19 and the fixed contact 20 are different from those in which the contact holder is moved integrally with the operation knob. It is possible to prevent chattering and arc between the two and as much as possible.

FIG. 8 shows a second embodiment of the present invention.
It differs from the embodiment in the following points. That is, the operation knob 28
In addition, the moderation peaks 32 having the first and second slopes 30 and 31 are integrally provided on both sides of the apex 29, and the contact holder 33, which is a movable member, is pressed against the moderation peaks 32 by the compression coil spring 34. A ball 35 as an indenter that is urged is provided.
Even in this case, it is possible to obtain the same effect as that of the first embodiment.

FIG. 9 shows a third embodiment of the present invention.
The following points are different from the first embodiment. That is, 36 is a movable member made of metal, and contact portions 39, 39 for contacting with and separating from the fixed contacts 38, 38 are integrally provided on one surface facing the insulator 37, and a side surface of the operation knob 40. On the other surface facing each other, first and second slopes 42 and 43 are provided on both sides of the apex 41.
The moderation mountain 44 having the
The ball 26 is pressed against 44. In this case, the movable member 36 and the fixed contact 38 form the switch 45, and thus the movable member 36 forms the movable contact of the switch 45. Reference numeral 46 denotes a lock convex portion that fits into the cam groove 10 of the rotor 9 and is provided so as to protrude from the switch case 47.

According to the third embodiment, the same operational effect as that of the first embodiment can be obtained, and in addition, since the movable member 36 constitutes the movable contact of the switch 45, the configuration can be simplified. There is an advantage to get.

In each of the above-described embodiments, the switch has the sliding contact type in which the movable contact slides on and comes off from the fixed contact, but the movable contact faces the fixed contact and comes in and out of contact with the fixed contact. It may be a counter contact type. Further, although the lock mechanism (the cam groove 10 of the rotor 9 and the lock convex portions 16 and 46 that relatively slides on the cam groove 10) for holding the operation knob in the pushing position is provided, the lock mechanism is provided. Instead, it can be applied to, for example, a type in which the operation knob is positioned at the push-in position only while it is being pressed and the operation knob is always returned to the original position when the push is released.

[Effects of the Invention] As is clear from the above description, according to the present invention, the moving speed of the movable member can be made constant and high speed regardless of how the operation knob is operated, so that the switch can be instantaneously operated. It is possible to perform switching, and this has an excellent effect that chattering and arc generation in the switch can be prevented as much as possible.

Moreover, the structure can be simplified by adopting a structure in which the movable member constitutes the movable contact of the switch.

[Brief description of drawings]

1 to 7 show a first embodiment of the present invention, FIG. 1 is a vertical sectional view taken along the line I--I in FIG. 2, and FIG. 2 is a plan view.
3 is a vertical sectional view taken along line III-III in FIG. 1, FIG. 4 is a vertical sectional view taken along line IV-IV in FIG. 1, FIG. 5 is a perspective view of a rotor, and FIG. 6 is a cam. FIG. 7 is a development view of the groove, and FIG. 7 is a view corresponding to FIG. 1 in a state where the operation knob is located at the pushing position. or,
FIG. 8 is a view corresponding to FIG. 1 showing a second embodiment of the present invention, and FIG.
The drawing is a vertical sectional view showing a third embodiment of the present invention. In the drawing, 1 is a switch case, 5 is an operation knob, 17 is a contact holder (movable member), 21 is a switch, 22 is a moderation mountain, 23 is a vertex, 24 is a first slope, 25 is a second slope, 26 Is a ball (indenter), 28 is an operation knob, 29 is an apex, 30 is a first slope, 31 is a second slope, 32 is a moderation mountain, 33 is a contact holder (movable member), 35 is a ball (indenter), 36 is a movable member, 39 is a contact part, 40 is an operation knob, 41 is an apex, 42 is a first slope, 43 is a second slope, 44 is a moderation mountain, 45 is a switch, 47
Indicates a switch case.

Claims (2)

[Scope of utility model registration request] 1. A switch case, an operation knob movably provided on the switch case and moved in a pushing direction by a pressing operation, and a moving direction of the operation knob facing the side surface of the operation knob on the switch case. A movable member provided so as to move between a first position and a second position in a direction parallel to, and when the movable member is located at the first position and at the second position. Of the operation knob and the movable member, one of the operation knob and the movable member, and a moderation ridge having first and second slopes on both sides of the apex. On the other hand, an indenter is provided that is biased in a direction of pressing against the moderation ridge and relatively moves along the moderation ridge when the operation knob is moved. With the move The child moves the first slope of the moderation mountain and pushes the second slope over the apex to move the movable member from the first position to the second position, and the operation knob moves from the pushing position to the original position. Moving the movable member from the second position to the first position by moving the second incline of the moderation peak and pressing the first incline beyond the apex as the indenter moves in the direction. Switch device characterized by. 2. The switch device according to claim 1, wherein the movable member is made of metal, and the movable member constitutes a movable contact of the switch.