JPH0433621Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a switch device configured to individually operate two switch elements using two operators.

(Prior Art) Conventionally, this type of switch device is most commonly configured in such a way that operators are provided in one-to-one correspondence with each switch element, and each operator is alternately held in the depressed position. It is. However, with the above-mentioned switch, it is not possible to return both of the operators to the protruding position, and therefore it is necessary to provide an additional operator exclusively for returning the switch, which increases the size of the entire switch device.

Therefore, in order to operate the two switch elements, it is possible to alternately hold the two controls in the push-in position, and also to hold the switch in the push-in position by pressing the switch again using a so-called heart-shaped cam. There is also a device that is configured to be able to release the operation and return to the protruding position, thereby eliminating the need for an operator dedicated to return. As disclosed in Utility Application No. 55-177041 filed by the present applicant, the specific structure is that a so-called heart-shaped cam portion is formed on each of the first and second operators, and the switch body is A lock pin that engages with this cam part is provided, and by cooperation between the lock pin and the cam part,
Each time an operator is pressed, a holding operation to hold it in the push-in position and a release operation to release the hold are alternately repeated, and when one operator is pressed, it moves to displace the lock pin of the other operator. It is provided with an actuating member that causes the release operation to be performed.

(Problems to be Solved by the Invention) However, in the above configuration, since the cam portions formed on each operator must be symmetrical, it is not possible to share both operators.
For this reason, the number of types of parts and, in turn, the number of types of molds increases, which raises the problem of increased parts costs and difficulties in parts management, resulting in an overall increase in manufacturing costs.

Therefore, the purpose of the present invention is to provide a switch device that can alternately hold the two operators in the pushed-in position while also returning each operator to the extended position independently, and that can be manufactured at low cost. It is on offer.

[Structure of the invention] (Means for solving the problem) The switch device of the invention includes a lock pin provided on each of the first and second operators for operating each of the first and second switch elements, The first and second lock pins engage with each other and alternately repeat the holding operation of holding the operating element in the pushed-in position and the releasing operation of releasing the holding, each time the operating element is pressed in cooperation with the lock pin. A locking member integrally having two cam parts is provided, each of the first and second cam parts is formed in a mutually symmetrical shape, and the locking member is moved in a direction substantially perpendicular to the pressing operation direction of each operator. By making it possible to hold the first operator, the lock member moves in one direction to release the second operator, and when the second operator is held, the lock member moves in the other direction. This device is characterized in that it is configured to move in the direction to release the first operator.

(Function) When one of the operators is pressed, the lock pin of that operator engages with the cam portion of the locking member, and the operator is held at the pushed-in position. When the operator is pressed again in this state, the lock pin and the cam work together to release the operator and return the operator to the protruding position. Also, if one of the controls is in the push-in position, if the other control is pressed, the locking member will move and release the hold on one of the controls in the push-in position, causing that control to protrude. Return to position. In this configuration, since each of the first and second cam portions is integrally formed with the lock member, each operator can have the same shape, and the number of types of parts is reduced accordingly.

(Example) An example of the present invention will be described below with reference to the drawings.

Reference numeral 1 designates a switch body, which is equipped with box-shaped first and second switch cases 2 and 3, and first and second operators 4 and 5 are respectively pressed downward in the figure on each switch case 2 and 3. possible.
Lower end of each operator 4, 5 and switch case 2, 3
A return spring 6, which corresponds to a biasing means, is disposed between the inner bottom of the
is constantly biased in the opposite direction to the pressing direction (upward in the figure). Reference numeral 7 denotes a movable contact piece provided on the first operator 4, and 8 a fixed contact provided on the inner surface of the first switch case 2. These constitute a first switch element 9. Further, although not shown in the drawings, movable contact pieces and fixed contacts similar to those described above are provided on the inner surfaces of the second operator 5 and the second switch case 3 to constitute a second switch element. There is.
Each switch element operates according to the position of each operator 4, 5, and the operator 4, 5 is in the protruding position (first position).
It is turned off when it is in the push-in position (the position of the first operator 4 in FIG. 1), and it is turned on when it is in the push-in position (the position of the second operator 5 in FIG. 1). 10 is a lock pin provided on each of the operating elements 4 and 5, which is formed by bending the upper and lower sides of a spring wire in opposite directions;
It is housed in slits 4a and 5a formed in each of the operating elements 4 and 5, and its upper end protrudes to the side opposite to the movable contact piece 7. In the attached state of the lock pin 10, the lower part of the lock pin 10 is pressed by the return spring 6 as shown in FIG. 1, so that the tip thereof is urged to rotate in the direction of arrow A.

Reference numeral 11 denotes a lock plate as a locking member, which is provided in a guide groove 12 formed on the inner surface of each of the first and second switch cases 2 and 3 so as to extend between both the switch cases 2 and 3. It is possible to reciprocate in a direction substantially perpendicular to the pressing operation direction of the operators 4 and 5 (therefore, in the left-right direction in FIG. 2).
As shown in FIG. 3, an opening 11a is formed approximately in the center of this lock plate 11, and a compression spring 13 is disposed within this opening 11a with its axial direction matching the moving direction of the lock plate 11. It is set up. This compression spring 13 is held in a compressed state between a pair of locking protrusions 14 protruding from the inner surfaces of the switch cases 2 and 3, and when the lock plate 11 is moved from side to side, the spring 13 is held in a compressed state within the opening 11a. When the peripheral edges come into contact and compress the compression spring 13, the lock plate 11 receives an elastic force that returns it to its original position. Next, 1
Reference numeral 5 designates a first cam portion of the lock plate 11 formed corresponding to the lock pin 10 of the first operator 4, which cooperates with the lock pin 10 to rotate the lock plate 11 every time the first operator 4 is pressed. The holding operation for holding the operator 4 in the pressed position and the releasing operation for releasing the holding are repeated alternately.The specific structure thereof will be explained below along with the operation with reference to FIG. 4.
First, approximately in the center is a holding protrusion 1 whose upper part is sloped.
6 is provided in a protruding manner, and a guide protrusion 18 is formed below the guide protrusion 18 with an oblique groove 17 in between.
Return grooves 19 are formed vertically on the right side of 8 in the drawing. When the first operator 4 is in the protruding position, the tip of the lock pin 10 is in the lowest region of the first cam portion 15, as shown in FIG. When the first operator 4 is pressed from this state, the lock pin 10 moves downward and moves downward along the upper slope of the holding protrusion 16 (actually, the lock pin 10 1
1 moves), and falls into the oblique groove 17 when the upper slope disappears.After this, when the pressing operation of the operator 4 is released, the operator 4 is moved upward by the return spring 6. Then, the lock pin 10 moves upward and comes into contact with the lower surface of the holding protrusion 16 and is locked therein. As a result, the first operator 4 is held at the pushed-in position. After this, the first
When the first operator 4 is pressed, the lock pin 10 falls from the locking position into the return groove 19 and is allowed to move upward, so the first operator 4 is released from its hold and released by the return spring. 6, it is returned to the protruding position. Also, 20 is lock plate 1
1, the second cam portion is formed in a portion corresponding to the lock pin 10 of the second operating element 5, and this is defined in a shape that is horizontally symmetrical with the first cam portion 15, Lock pin 1 of second operator 5
0 and the second cam part 15 in the same way as the first cam part 15.
The holding operation of holding the operator 5 in the pressed position and the releasing operation of releasing the holding are alternately repeated each time the operator 5 is pressed. As described above, the functional elements of each part of the second cam part 20 are the same as those of the first cam part 15, so the same parts are given the same reference numerals.

Next, the operation of the above configuration will be explained.

Now, assume that both the operators 4 and 5 are in the protruding position, and here, for example, the first operator 4 is pressed. Then, the lock pin 1 of the first operator 4
0 moves downward together with the operator 4, and as a result, the tip of the lock pin 10 comes into contact with the upper slope of the holding protrusion 16 of the first cam portion 15 provided on the lock plate 11. Thereafter, the lock pin 10 further moves downward and presses the upper slope of the holding protrusion 16, thereby pushing the holding protrusion 16 and the lock plate 11 in one direction, rightward in FIG. Move to the right while compressing. Therefore, the holding protrusion 16 is retracted from below the lock pin 10, and the lock pin 10 reaches below the holding protrusion 16. Then, lock plate 1
1 returns to its original position by the elastic force of the compression spring 13, so that the holding protrusion 16 is positioned above the lock pin 10. After this, when you release your finger from the first operator 4, the first operator 4 is returned upward by the elastic force of the return spring 6, but at this time, the lock pin 10 is moved to the holding protrusion located above it. 16, the upward movement is prevented, and as a result, the first operating element 4 is held in the pushed-in position and the first switch element 9 is maintained in the on state.

Next, when the second operator 5 is pressed in the above state, the lock pin 10 provided on the second operator 5 is moved to the holding protrusion 16 of the second cam portion 20 formed on the lock plate 11. comes into contact with. Here, since the second cam part 20 is formed in a symmetrical shape with respect to the first cam part 16, in this case, the lock plate 11 is moved in the opposite direction to the left in FIG. Move to. Therefore, the holding protrusion 16 of the first cam portion 15 that has been locking the lock pin 10 of the first operating element 4 is retracted from above the lock pin 10, and the lock pin 10 enters the return groove 19. Therefore, the locked state is released, and a release operation is performed in which the first operator 4 returns to the protruding position by the elastic force of the return spring 6.
Thereafter, since the lock plate 11 returns to the right, the lock pin 10 comes to be locked by the holding protrusion 16 of the second cam part 20, as in the case of the first operator 4. As a result, the first operator 4 returns to the protruding position and the first switch element 9 is turned off, while the second operator 5 is held in the pushed position and the second switch element 9 is turned on. will be maintained.

Furthermore, when the second operator 5 is pressed again from the above-mentioned state, the lock pin 10 provided thereon moves downward and returns to the second cam part 20 and falls into the groove 19, so that the lock pin 10 moves upward. When the movement is allowed, the second operating element 5 returns to the protruding position by the elastic force of the return spring 6, and the second switch element 9 is thereby turned off.

According to this embodiment configured as above, the first and second operators 4 and 5 can be alternately held in the pushed-in position as described above, and each operator 4 and 5 in the pushed-in position can be held again. By pressing, they can be individually returned to the protruding position. Therefore, there is no need for a dedicated operator for returning the operators 4 and 5 from the pushed-in position, making it possible to downsize the entire switch device. Also, the lock plate 11 is used when pressing the first operator 4 from the protruding position to the pushing position.
The direction of movement of the lock plate 11 (to the right in FIG. 3) is opposite to the direction of movement of the lock plate 11 (to the left in FIG. 3) when pressing the second operator 5 from the protruding position to the pushing position. Therefore, it is possible to prevent so-called simultaneous locking in which the first and second operating elements 4 and 5 are held in the push-in position at the same time, and it is also possible to prevent the first and second switch elements from being turned on at the same time. . In addition, lock pins 10 are provided on each of the operating elements 4 and 5, and each cam portion 16 and 20 is
Since the lock plate 11 is formed integrally with the lock plate 11, unlike the conventional structure in which a cam portion is provided for each operator, each operator 4 and 5 can have the same shape, allowing common parts. It is also possible to obtain an effect unique to the present invention. This results in
The overall number of parts types can be reduced, and the number of mold types can be reduced accordingly. Under the circumstances where mold costs account for the majority of parts costs, parts costs can be lowered, and parts management is also easier. Therefore, overall manufacturing costs can be significantly reduced.

[Effects of the invention] As described above, the present invention provides a lock pin for each of the first and second operators, and integrates the first and second cam portions that engage with the lock pins into the lock member. The first and second cam portions are formed symmetrically to each other, and the locking member is movable in a direction substantially perpendicular to the direction in which the operating elements are pressed. It can be held in the pushed-in position and returned to the extended position independently, and it is possible to prevent simultaneous locking in which both operators are held in the pushed-in position at the same time, while reducing the number of parts. This has the excellent effect of reducing manufacturing costs.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view, Fig. 2 is a front view of the entire device, Fig. 3 is a front view of the locking member, and Fig. 4 is a perspective view of the first cam part. It is. In the drawing, 4 and 5 are first and second operators, 6 is a return spring (biasing means), 9 is a switch element,
10 is a lock pin, 11 is a lock plate (lock member), and 15 and 20 are first and second cam parts.

Claims (1)

[Scope of utility model registration request] first and second operators that are provided so as to be operable by pressing and are each biased in a direction opposite to the pressing direction by a biasing means; and first and second switches that operate based on the pressing operation of each of these operators. and a lock pin provided on each of the operating elements, and a holding operation in which each of the lock pins engages with the lock pin to hold the operating element in the pushed position each time the operating element is pressed. and a locking member integrally having first and second cam portions that alternately repeat a locking operation and a releasing operation of releasing the holding, the first and second cam portions being formed in a mutually symmetrical shape, and By providing the lock member so as to be movable in a direction substantially perpendicular to the pressing operation direction of each of the operating elements, the first
When the second operator is held, the lock member moves in one direction to release the second operator, and when the second operator is held, the lock member moves in the other direction to release the second operator. A switch device characterized in that it is configured to perform a release operation of an operator.