JPH0521793Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure of a switch in which one contact is opened and the other contact is closed by rotation of a rotating cover.

[Prior Art] This type of switch includes a switch used in telephone equipment.

FIGS. 2a and 2b are cross-sectional views of a conventional hook switch, where a shows the on-hook state and b shows the off-hook state. As shown in Figure a, when a transmitter/receiver (not shown) is placed on the rotating cover 1, the rotating cover 1 rotates clockwise due to its weight, and in this state, the contact 2 is closed. At the same time, contact 3 is open. When the handset is picked up, the rotary cover 1 is rotated counterclockwise by the tension coil spring 4, the leaf spring 6 is lifted by the protrusion 5 of the rotary cover 1, the contact point 3 is closed, and the leaf spring 7 is further lifted. Contact 2 opens.

[Problem that the invention attempts to solve]

However, in the above-mentioned conventional switch, since the contacts 2 and 3 are constructed by combining leaf springs 6 and 7, there is a large variation in the contact operating position, and furthermore, the rotation cover 1 is biased by the tension coil spring 4. The operating load for cover rotation also varied widely, reducing product accuracy. For this reason, manufacturing accuracy during assembly is strict, and the large number of parts hinders low cost.

The present invention aims to solve the above problems.

[Means for solving the problem] The present invention includes a rotating cover that can be rotated at a required angle;
a bullet that biases the rotating cover in one rotation direction;
The switch structure includes a pair of contacts, one of which opens and the other of which closes when the rotating cover is rotated in forward and reverse directions.The switch has a substrate provided close to the rotating cover, and the pair of contacts are mounted on this substrate. The device consists of a fixed fixed electrode and a movable electrode supported by a rubber elastic material opposite to the fixed electrode. The rotary cover is supported by a rubber elastic material adjacent to at least one of the electrodes, and the rotating cover has a pair of contact parts that press down the movable electrode and the contact part of each contact, sandwiching a fulcrum. It is being formed.

[Effect]

According to the present invention, assembly can be accomplished by simply attaching the base plate, on which the pair of contacts and the bullet are formed, and the rotary cover in close proximity. When the rotating cover is rotated in one rotation direction by the biasing force of the bullet, the movable electrode of one contact is pushed down to close the circuit, and the rotating cover is rotated in the other rotation direction against the biasing force of the bullet. Then, the other movable electrode is pushed down to close the circuit. Here, the contact has a structure in which a movable electrode supported by a rubber elastic material operates, and the elastic machine has a structure in which a contact part supported by a rubber elastic material contacts the rotating cover, so the rotating cover Variations in contact operating position and rotational load are reduced.

〔Example〕

Figures 1a, b, and c are cross-sectional views of a hook switch according to an embodiment of the present invention, where a is in the on-hook state and b is in the on-hook state.
3 is an assembled perspective view of the hook switch shown in FIGS. 1a and 1b.

In FIG. 3, 8 is a box-shaped base, and 9 is a thin silicone rubber plate attached to the base 8. 10a, 11a, 12a are dome portions formed on the silicone rubber thin plate 9; 10b, 11b, 1
2b is the top of the dome parts 10a, 11a, 12a,
10c and 11c are conductive rubber parts formed on the lower surfaces of the top parts 10b and 11b (see FIGS. 1a and 1b);
d, 11d are conductive rubber parts 10b, 1 on the base 8.
A pair of fixed electrodes formed opposite to 1b. The first contact point 10 is a dome portion 10a, a top portion 10
b, a conductive rubber part 10c, and a fixed electrode 10d (see FIGS. 1a and b), and the second contact 11 includes a dome part 11a, a top part 11b, a conductive rubber part 11c,
The bomb 12 is composed of a fixed electrode 11d (see FIGS. 1a and 1b), and a dome portion 12a and a top portion 12b (see FIG. 1c). 13 is a plate material that comes into contact with the top portions 10b, 11b, and 12b;
The protrusions 13a at both ends engage with the notches 8a of the base 8, and are attached to be vertically movable. 1 is a rotating cover, and the opening 1a is connected to the shaft 8b of the base 8.
It is fitted and rotatably attached. The rotary cover 1 is formed with a hook portion 1b on which a transmitter/receiver (not shown) is placed. The rotary cover 1 is also provided with a contact portion 1c that contacts the plate material 13. The lower surface of this contact portion 1c is formed into a gentle convex surface. With the above structure, the hook switch of this embodiment has fixed electrodes 10d and 11.
It can be assembled by simply pasting the thin plate 9 on the base 8 to which d is attached, attaching the plate material 13, and attaching the rotating cover 1.

As shown in FIG. 1a, when a handset (not shown) is placed on the hook portion 1b of the rotating cover 1, the rotating cover 1 is moved to the first contact point 10 due to the weight of the handset. and is held in a position rotated clockwise about the shaft 8b against the repulsive force of the ammunition 12. In this state, the first contact 10 is closed with the conductive rubber portion 10c in contact with the fixed electrode 10d. Further, the second contact 11 is open.

Further, as shown in FIGS. 1b and 1c, when the handset is picked up, the rotary cover 1 is rotated counterclockwise by the repulsive force of the bomb 12 and held in that position. In this state, the conductive rubber portion 10c of the first contact 10 separates from the fixed electrode 10d, causing an open circuit.
Further, the second contact 11 is closed.

As explained above, the first contact 10 and the second
Since the contacts 11 are configured to conduct electricity when the conductive rubber parts 10c, 11c are pressed down and come into contact with the fixed electrodes 10d, 11d, variations in the operating positions of the contacts on the rotating cover 1 are reduced. Furthermore, the accuracy of the repulsive force of the ammunition 12 is high, and the variation in the rotational load of the rotating cover 1 is reduced. Since the product has high precision and is easy to assemble as described above, it is also economically advantageous.

〔Effect of the invention〕

As explained above, according to the present invention, the contact is configured such that a movable electrode supported by a rubber elastic material operates, and the contact part of the elastic machine is also supported by a rubber elastic material and contacts the rotating cover. Because of this structure, there is an effect that variations in the contact operating position and rotational load of the rotating cover are reduced. Further, since the assembly can be carried out by simply attaching the base plate on which the pair of contacts and the ammunition are formed, and the rotary cover in close proximity, the assembly work becomes easy. Furthermore, the number of parts is reduced,
Since the product has high precision and is easy to assemble, it has the effect of reducing manufacturing costs and improving the cost of the product.

[Brief explanation of the drawing]

Figures 1a, b, and c are cross-sectional views of a hook switch according to an embodiment of the present invention, where a is in the on-hook state and b is in the on-hook state.
1 is a diagram showing an off-hook state, and c is a diagram showing a bullet when it is off-hook. Figures 2a and 2b are cross-sectional views of a conventional hook switch, where a is in the on-hook state and b is in the on-hook state.
is a diagram showing an off-hook state. FIG. 3 is an assembled perspective view of the hook switch of FIGS. 1a and 1b. 1... Rotating cover, 1a... Opening, 1b... Hook portion, 1c... Contact portion, 8... Base, 8a...
...notch, 8b...shaft, 9... thin plate of silicone rubber, 10... first contact, 11... second contact, 12... bullet, 10a, 11a, 12a...
Dome part, 10b, 11b, 12b...Top part, 1
0c, 11c... Conductive rubber part, 10d, 11d...
...Fixed electrode, 13...Plate material, 13a...Protrusion.

Claims (1)

[Claims for Utility Model Registration] A rotating cover 1 that can be freely rotated through a required angle, a bullet 12 that biases this rotating cover in one rotation direction, and one side opening and the other closing when the rotating cover rotates forward and backward. A switch structure comprising a pair of contacts 10 and 11, comprising a substrate 8 provided close to the rotating cover, the pair of contacts having fixed electrodes 10d and 11d fixed on the substrate, It consists of movable electrodes 10c and 11c supported by rubber elastic members 10a and 11a facing the fixed electrode, and the elastic machine has a movable electrode 10c and 11c supported by rubber elastic members 10a and 11a. It is supported by a rubber elastic material 12a adjacent to at least one of the movable electrodes, and the rotating cover has a pair of abutments that push down the movable electrodes 10c, 11c and the abutting portion 12b of each contact. A switch structure characterized in that a portion 1c is formed sandwiching a fulcrum.