JPH077617B2 - Switch switching device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a switch switching device that performs a switch switching operation by a rotary operation of a rotary operation button that is rotationally displaced by a manual operation.

(B) Conventional Technology An apparatus has been developed which uses a pulse signal generated with the rotation of a rotating body to perform an input signal switching operation, a radio broadcast signal tuning operation, and the like. As a method for generating such a pulse signal, a non-contact type using a photocoupler or a Hall element is generally widely used, and such a technique is disclosed, for example, in Japanese Utility Model Publication No. 61-93024. There is.

(C) Problem to be Solved by the Invention An apparatus for generating a pulse signal using a photocoupler or a Hall element has a problem that the configuration becomes complicated and the cost becomes high. The present invention intends to provide a switching device for a switch, which is improved in this respect.

(D) Means for Solving the Problem The switching device of the present invention is provided around the rotation center axis of the rotary operation button that is manually rotated, and has a plurality of convex portions formed on the peripheral edge thereof. A drive portion and an elastic engagement portion that is rotatably mounted coaxially with the rotation center axis of the rotary operation button and that elastically engages a convex portion formed on the drive portion are provided. It is composed of a switching rotary member and a switching piece formed on the switching rotary member and pressingly displacing a switching element provided on the switch when the switching rotary member is rotationally displaced.

(E) Action In the present invention, the rotational force of the rotary operation button is transmitted to the switching rotary member by the pressing force applied to the elastic engaging portion provided on the switching rotary member of the convex portion formed on the drive portion. By doing so, the switching operation of the switch is performed.

(F) Embodiments The drawings are all related to the present invention. FIG. 1 is an exploded perspective view and FIG.
FIG. 3, FIG. 3 and FIG. 4 are plan views of a main part showing different states, and FIG. 5 is a side sectional view of the main part. (1) is a cylindrical support portion formed in the cabinet (2), (3) is rotatably and axially displaced by a support shaft (4) inserted in the cylindrical support portion (1). A rotary operation button which is provided so that it can be rotated and linearly displaced by a manual operation, and (5) is a switching provided at the center of a spindle (4) formed on the rotary operation button (3). The pressing member (6) for driving is provided around the support shaft (4) formed on the rotary operation button (3) and has a plurality of protrusions (7) formed on the periphery thereof. It is a department.
Reference numeral (8) is a switching rotary member provided on the rotary operation button (3) and rotatably attached to the drive unit (6) by a holding frame (9), and is formed on the drive unit (6). Elastic engaging portion (10) that elastically engages the protruding portion (7)
And a switching piece (11) for switching the switch. The elastic force of the elastic engagement portion (10) is obtained by the curved portions (12) (13) integrally formed with the switching rotary member (8). (14) is a circuit board in which electric circuit components are incorporated, and (15) is the circuit board (1
It is a first switch having a switching element (16) which is fixed to 4) and which switches the contacts incorporated therein, and the switching element (16) when the pressing force to the switching element (16) is cut off.
Is configured to return to the original position. A second part (17) has a switching element (18) which is fixed to the circuit board (14) and which is incorporated in the inside to switch the contacts.
It is a switch, and is configured to return the switching element (18) to its original position when the pressing force on the switching element (18) is cut off. The first switch (15) and the second switch (17) have a switching piece (11) formed on the switching rotary member (8) when the switching rotary member (8) rotates as shown in the figure. Abutting on the switching element (16) (18), the switching element (16)
(18) is arranged so as to be displaced by pressing. Reference numeral (19) is a third switch which is fixed to the circuit board (14) and has a switch (20) for switching the contacts incorporated therein, which cuts off the pressing force to the switch (20). And the switching element (20) is configured to return to its original position. Then, the third switch (1
9) is arranged so that the pressing end portion (5a) of the switching pressing member (5) formed on the rotary operation button (3) as shown in the drawing is in contact with the switching element (20). ing. In FIG. 5, (21) is a panel provided so as to cover the upper surface of the cabinet (2), and is in contact with the guide flange (3a) formed on the rotary operation button (3). It has a function of guiding and supporting the rotation operation of the rotation operation button (3). The switching device of the present invention is configured as described above. Next, the switching operation of the switch by such a device will be described.

FIG. 5 is a side sectional view of the switching device of the present invention. The rotary operation button (3) is biased in the direction of arrow (A) by the elastic biasing force received from the switching element (20) of the third switch (19). It is in a broken state. In this state, when the rotary operation button (3) is pressed in the arrow (B) direction, the rotary operation button (3) is displaced in the arrow (B) direction while being guided by the cylindrical support portion (1). Such a displacement operation is performed against the biasing force received from the switching element (20) and the switching element (2
The switching operation of the third switch (19) is performed in order to press and displace 0). When the pressing force applied to the rotary operation button (3) is cut off, the rotary operation button (3) is returned to the position shown by the restoring force of the switching element (20) in the direction of the arrow (A) and the third position The switch (19) can also be returned to the original state. Therefore, every time the rotary operation button (3) is pressed and displaced in the direction of the arrow (A), the switching operation of the third switch (19) is performed. The switching operation of the third switch (19) is performed as described above, but next, the first switch (15) and the second switch (1
The switching operation of 7) will be described.

The state shown in FIG. 2 is a non-switching state, and the switching piece (11) formed on the switching rotary member (8) is incorporated in the first switch (15) and the second switch (17). It is far from the child (16) (18). When the rotary operation button (3) is rotated counterclockwise in such a state, the drive portion (6) formed on the rotary operation button (3) rotates counterclockwise. When the drive part (6) rotates counterclockwise, the convex part (7) formed on the drive part (6) engages with the elastic engagement part (10) formed on the switching rotary member (8). For this purpose, the rotational force of the drive unit (6) acts as the rotational force of the switching rotary member (8), and the switching rotary member (8) is rotated counterclockwise. When the switching rotary member (8) is rotationally displaced counterclockwise, the switching piece (11) formed on the switching rotary member (8) is incorporated into the first switch (15) as shown in FIG. Switcher (1
As a result, the first switch (15) is switched as a result of abutting against the switch (6) and pressing and displacing the switch (16). When the rotary operation button (3) is further rotated counterclockwise from the state shown in FIG. 3, the switching rotary member (8) abuts the first switch (15) to prevent further rotary operation. Because of this state, the engagement relationship between the convex portion (7) formed on the drive portion (6) and the elastic engagement portion (10) is broken. As a result, the switching rotary member (8) has the elastic engagement portion (10).
Generated reaction force and the switch (1) of the first switch (15)
It is rotated and displaced in the clockwise direction, that is, the counter operation direction, by the restoring force of 6). Thus, when the rotary operation button (3) is rotated counterclockwise, the switching rotary member (8) is rotationally displaced in the counterclockwise direction and rotationally displaced in the counteroperational direction. The switching operation of (15) is performed. The switching operation of the first switch (15) is performed by the engagement between the convex portion (7) formed on the drive portion (6) and the elastic engagement portion (10) formed on the switching rotation member (8). Since the number of the convex portions (7) is 12 in the present embodiment, the first switch (15) is switched 12 times when the rotation operation button (3) makes one rotation because the combination and separation operations are performed every time. Will be done.

The switching operation of the first switch (15) when the rotary operation button (3) is rotated counterclockwise is performed as described above. Next, the operation when rotating it in the opposite clockwise direction will be described. . When the rotary operation button (3) is rotated clockwise in the state shown in FIG. 2, the drive unit (6) formed on the rotary operation button (3) rotates clockwise. When the drive part (6) rotates clockwise, the convex part (7) formed on the drive part (6) engages with the elastic engagement part (10) formed on the switching rotation member (8). Therefore, the rotational force of the drive unit (6) acts as the rotational force of the switching rotary member (8), and the switching rotary member (8) is rotated clockwise. When the switching rotary member (8) is rotationally displaced in the clockwise direction, the switching piece (11) formed on the switching rotary member (8) is installed in the second switch (17) as shown in FIG. Of the second switch (1) as a result of abutting against the switching element (18) that is being operated and pressingly displacing the switching element (18).
The switching operation of 7) is performed. When the rotary operation button (3) is further rotated in the clockwise direction from the state shown in FIG. 4, the switching rotary member (8) is in contact with the second switch (17) to prevent further rotation. Therefore, the convex portion (7) formed on the drive portion (6) and the elastic engagement portion (10)
The engagement relationship with is broken. As a result, the switching rotary member (8) rotates counterclockwise, that is, in the counter-operation direction by the reaction force generated by the elastic engagement portion (10) and the restoring force of the switching element (18) of the second switch (17). It can be displaced dynamically. When the rotary operation button (3) is rotated clockwise in this manner, the switching rotary member (8) is rotationally displaced in the clockwise direction and rotationally displaced in the opposite operation direction, so that the second switch (17) is operated. ) Switching operation is performed. When rotating the rotary operation button (3) clockwise, the second switch (17)
The switching operation of the second switch (17) is performed 12 times by rotating the rotary operation button (3) once like the first switch (15).

As described above, when the rotary operation button (3) is rotated counterclockwise and clockwise, the first switch (15) and the second switch (17) are repeatedly switched, so that the first switch (15) and The pulse signal can be continuously generated by utilizing the switching operation of the second switch (17).

(G) Effect of the Invention According to the present invention, the rotational force of the rotary operation button is changed by the pressing force of the elastic engagement portion provided on the switching rotation member of the convex portion formed on the drive unit. The switch return operation is performed by transmitting the switch to the switch and the switch return operation is performed by breaking the engagement relationship between the convex portion and the elastic engaging portion when the load increases as the switch is switched. However, it has an advantage that the pulse signal or the like can be generated at a low cost as compared with the case where the photo coupler or the like is used.

[Brief description of drawings]

The drawings are all related to the switching device of the present invention. FIG. 1 is an exploded perspective view, FIG. 2, FIG. 3, and FIG. 4 are plan views of main parts showing different states, and FIG. FIG. Description of main drawing numbers (2) ... Cabinet, (3) ... Rotation operation button, (6) ...
Drive part, (7) ... Convex part, (8) ... Switching rotary member, (10)
... elastic engaging portion, (11) ... switching piece, (15) ... first switch, (17) ... second switch, (19) ... third switch,
(16), (18), (20) ... Switch.

Claims (1)

[Claims] 1. A rotary operation button which is rotated by a manual operation, a drive section which is provided around a rotation center axis of the rotary operation button and has a plurality of convex portions formed on its peripheral edge, A switching rotary member that is rotatably mounted coaxially with the rotation center axis of the rotary operation button and that is provided with an elastic engaging portion that elastically engages with a convex portion formed on the drive portion, A switching piece that is formed on the switching rotary member and presses and displaces a switch provided on the switch when the switching rotary member is rotationally displaced;
When the rotary operation button is rotating, the switching force of the switch is applied to the switching rotary member by the pressing force applied to the elastic engagement portion of the convex portion, and the convex portion is increased when the load accompanying the switch switching increases. The switch switching device is characterized in that the engagement relationship between the switch and the elastic engaging portion is broken, and the switching rotary member is rotated in a counter-operation direction by a restoring force of a switch selector of the switch.