JPH0231971Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses a contact support member made of an elastic material to keep a movable contact part always separated from a fixed contact part formed by a printed pattern, and the operating knob rotates. The present invention relates to a switch device in which, when operated, a contact support member is elastically deformed so that the movable contact portion comes into contact with a fixed contact portion and is operated.

Conventionally, this type of contact support member is made of an elastic material such as thin rubber, and when the contact support member is elastically deformed by an operation knob that is rotated, the contact support member is held by the contact support member. Since the movable contact part undergoes elastic deformation in an arc shape along the rotation locus of the operation knob, the movable contact part may come into contact with the fixed contact part in an inclined state, or the movable contact part may contact the fixed contact part in an inclined state. The fixed contact part is moved in a sliding manner with respect to the fixed contact part while being in contact with the fixed contact part,
There are disadvantages in that reliable contact between both contact portions cannot be obtained, or both contact portions wear out prematurely due to sliding.

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to move the movable contact portion held by the contact support member linearly with respect to the fixed contact portion in a device that rotates the operation knob. To provide a switch device in which a fixed contact part and a movable contact part are brought into contact and separated, thereby achieving a reliable contact state between a fixed contact part and a movable contact part, and having a long life without premature wear of both contact parts.

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes an insulating substrate, and on the upper surface thereof, two sets of fixed contact portions 2, 2 and 3, 3 formed in a comb-like shape by a printed pattern are provided in close proximity to each other to form a pair. ing. Reference numeral 4 denotes a contact support member made of an elastic material such as silicone rubber, which is placed on top of the upper surface of the insulating substrate 1, and has an annular thin wall at a position facing the fixed contact parts 2, 2 and 3, 3. Movable parts 7 and 8 having a short cylindrical shape are integrally molded via the parts 5 and 6, and the movable parts 7,
8 is always opposed to the fixed contact portions 2, 2 and 3, 3 with a predetermined distance therebetween due to the elasticity of the thin portions 5, 6 themselves. 9 and 10 are movable contact parts provided in the movable parts 7 and 8, which are fixed contact parts 2, 2 and 3, 3.
It is formed by applying a conductive material such as carbon to a predetermined thickness on the surface facing the surface. 11 is a rectangular box-shaped switch case with open top and bottom sides.
An insulating substrate 1 is fixed to the lower end surface of the switch case 11 by thermal caulking or the like, and the outer peripheral portion of the contact support member 4 is held between the switch case 11 and the insulating substrate 1. Reference numeral 12 denotes a partition wall formed in the middle part of the switch case 11 so as to be substantially parallel to the insulating substrate 1, and a partition wall 2 that vertically passes through the partition wall 12 and faces the movable parts 7 and 8. guide holes 12
a, 12b are drilled, and the guide holes 12a, 12b
The actuators 13, 13 are directly movably inserted into the actuators 13, 13. Reference numeral 14 denotes a slit-shaped groove formed in the center of the upper surface of the partition wall 12, and this is the guide hole 12a, 1
It is formed in an arc shape so as to span between 2a.
Reference numeral 15 denotes an operation knob having a pivot 15a rotatably supported in a U-shaped groove 16 provided at the upper edge of the switch case 11, and a pivot 15a at the center slidably fitted into the groove 14 on the lower surface of the knob. An arcuate guide convex portion 17 with a bulged center is integrally protruded near the guide convex portion 17, and actuators 13,
Approximately flat pressing portions 17a, 17a corresponding to 13 are provided. 18 is a panel fitted into the upper edge of the switch case 1, which allows the pivot 1
5a is prevented from coming off from the groove 16.

Next, the operation of the above configuration will be explained. Operation knob 15
When not being operated, the movable contact parts 9 and 10 of the movable parts 7 and 8 are separated from the fixed contact parts 2 and 3 by the elastic force of the thin parts 5 and 6, respectively, and the operation knob 15 is moved away from the switch case 11. exhibits a neutral state. When one end of the operating knob 15 is pressed from this state, the operating knob 15 is rotated in the direction of arrow A about the pivot 15a, and the actuator 13 is guided by one of the pressing portions 17a. Hole 12a
is slid linearly downward, and the movable part 7 is moved linearly downward against the elastic force of the thin-walled part 5, so that the movable contact part 9 comes into contact with the fixed contact parts 2, straddling the fixed contact parts 2, 2. do. Further, when the other end of the operating knob 15 is pressed and the operating knob 15 is rotated in the direction of arrow B, the actuator 13 is moved downward through the guide hole 12a by the other pressing portion 17a. The movable part 8 is linearly moved downward against the elastic force of the thin-walled part 6, and the movable contact part 10 comes into contact with the fixed contact parts 3 so as to straddle between them. .

According to the above configuration, the pressing parts 17a, 17a rotate around the pivot 15a of the operation knob 15, and the actuators 13, 13 pressed by the pressing parts 17a, 17a are pressed against the partition wall 12. Since the actuators 13 and 13 move the movable bodies 7 and 8 having the movable contact portions 9 and 10 provided on the insulating substrate 1, the movable bodies 7 and 8 are guided by the provided guide holes 12a and 12a and moved linearly. The fixed contact parts 2, 2 and 3, 3 can be linearly moved to approach and separate from each other, so that the movable contact parts 9, 10 can be brought into reliable contact with the fixed contact parts 2, 2 and 3, 3. can be done, and also
Since the movable contact portions 9 and 10 do not slide relative to the fixed contact portions 2, 2 and 3, 3, wear of both is reliably prevented.

Further, since the guide convex portion 17 formed on the operating knob 15 and having a circular arc shape with a bulged center is slidably fitted into the groove portion 14 provided on the partition wall 12, the operating knob 1
Even if 5 is rotated, the groove 14 and the guide protrusion 17
The fitting depth is approximately constant and a stable fitting state is obtained, the positional relationship between the operation knob 15 and the switch case 11 is constant, and the operation feeling is improved so that the operation knob 15 can be rotated smoothly. is excellent. This effect is achieved.

As is clear from the above description, the present invention is designed so that the movable contact portion held by the contact support member linearly moves into contact with and separates from the fixed contact portion when the operating knob is rotated. Therefore, it is possible to provide a switch device in which a reliable contact state between the fixed contact part and the movable contact part is obtained, both contact parts do not wear out prematurely, and the service life is long, and the operation feeling is excellent.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a vertical side view, FIG. 2 is a sectional view taken from a different direction from FIG. 1, FIG. 3 is a perspective view of an insulating substrate, and FIG. The figure is a diagram corresponding to FIG. 1 showing different operating states. In the drawings, 1 is an insulating substrate, 2 and 3 are fixed contact parts, 4 is a contact support member, 5 and 6 are thin parts, 7 and 8 are movable parts, 9 and 10 are movable contact parts, 11 is a switch case, 12 is the partition wall, 13 is the actuator,
14 is a groove, 15 is an operation knob, 15a is a pivot, 1
6 is a groove, 17 is a guide convex portion, and 17a is a pressing portion.

Claims (1)

[Scope of utility model registration request] an insulating substrate having fixed contact portions formed in pairs in close proximity to each other on the surface thereof by a printed pattern;
A movable contact portion is provided on the surface of the insulating substrate and can be contacted so as to straddle the pair of fixed contact portions, and the movable contact portion is normally kept separated from the fixed contact portion by its own elasticity. a contact support member made of an elastic material; a switch case that is attached to the front surface side of the insulating substrate so as to cover the contact support member and has a partition wall facing the contact support member in an intermediate portion; an actuator supported on the partition wall so as to be linearly movable in the deformation direction of the contact support member in correspondence with the movable contact portion of the contact support member; and an actuator provided on the switch case so as to be rotatable about a pivot axis. an operating knob provided on the operating knob; a pressing portion that is provided on the operating knob and presses the actuator by the rotation when the operating knob is rotated;
a guide protrusion provided on the operation knob and formed in an arcuate shape with a bulged center portion so as to be slidably fitted into the groove of the partition wall and guide rotation of the operation knob; A switch device.