JP2512922Y2 - switch - Google Patents

Description

TECHNICAL FIELD The present invention relates to a switch used in various electronic devices.

Conventional Technology Conventional technology will be described with reference to FIGS. According to the figure, 1 is a support shaft with a common terminal 2 and an individual terminal 3 planted.
A case 1a is formed, 4 is a contact piece formed in the shape of a clip, and 5 is a sliding body for moving the contact piece 4, and has a convex portion 5a on the top surface for being pushed by a drive portion of a lever described later. 6 is a lever having a support hole 6a for pivotally supporting the support shaft 1a of the case, an operating portion 6b, and a drive portion 6c for driving the sliding body 5, and 7 is one end of the case. The other end of the inner wall of 1 is a coil spring housed in the case 1 so as to come into pressure contact with the convex portion 5a of the sliding body 5. In the state of FIG. 7, the common terminal 2 and the individual terminal 3 are not electrically connected by the contact piece 4.

Next, the operation of the above switch will be described. In FIG. 7, the lever 6 is projected by the biasing force of the coil spring 7
And is stopped in the clockwise direction via the drive unit 6c. When the lever 6 is rotated from this state, the sliding member 5 is pushed by the drive portion 6c of the lever 6 in accordance with the rotation, and the contact piece 4 is pushed.
The movement of is started. When the rotating operation is further continued, the contact piece 4 eventually comes into contact with the individual terminal 3, and at this time, the switch
Turns on. When the rotating operation is further continued, the sliding body 5 contacts the inner wall of the case 1 as shown in FIG. 8, and the rotating operation of the lever 6 is completed.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-mentioned conventional switch, since the functions of the individual parts are subdivided, the number of parts constituting the switch is large, which is disadvantageous in terms of economical efficiency.
There was a problem in assembly work that it was difficult to assemble. In addition, since the clip-shaped contact piece and the coil spring are used, there is a problem that it is difficult to reduce the thickness.

The present invention solves such a conventional problem, and an object of the present invention is to provide an excellent switch which is inexpensive and can be made thin.

Means for Solving the Problems In order to solve the above problems, the present invention provides a case having a substantially box-like shape made of an insulating material, and a pair of common terminals and individual terminals planted on the bottom surface of the case. A torsion coil spring-shaped contact piece made of a conductive material, one end of which is a linear fixed end and has a fixed contact at its tip, and the other end of which is U-shaped and has a movable contact at its tip; A fixed contact of the contact piece is in contact with the common terminal, and a movable contact is opposed to the individual terminal with a gap, and the bottom surface of the rotation part of the lever is in contact with the common terminal. Is configured to contact the movable end of the contact piece, and the contact piece is driven by the lever to bring the movable contact into contact with the individual terminal.

Operation According to the present invention described above, since the lever has a torsion coil spring-shaped contact piece having a contact function and a lever return function, and the function of sealing the case and rotating the contact piece 4, the constituent parts By reducing the number of points and having an advantage in terms of economy and assembling workability, by setting the number of turns of the coil portion of the contact piece within a range that satisfies the return operation of the lever,
The contact piece can be made thinner, and as a result, the switch can be made thinner.

Embodiment An embodiment of the switch of the present invention will be described with reference to FIGS. Reference numeral 11 is a substantially box-shaped case having a rectangular opening 11a on the upper surface, and a pair of common terminals 12 and individual terminals 13 are formed on the bottom surface 11b in the same plane as the bottom surface at the upper end portions of the opposing side walls 11c and 11d. A pair of holes 11e and 11f are formed, and a rib 11h having a U-shaped cutout portion 11g in the direction of the opening from the bottom surface is formed substantially at the center of the bottom surface 11b. Reference numeral 14 denotes a torsion coil spring-shaped contact piece made of a conductive material and having a connection function and a function for returning a lever 15 described later.One end of the coil portion 14a is a linear fixed end 14b and a fixed contact 14c is provided at its tip. Is formed, and the other end has a movable end 14d formed in a U shape, and has a movable contact 14e at its tip. Reference numeral 15 denotes a lever made of an insulating material and formed in a substantially fan shape, which has a sealing function for covering the opening 11a of the case 11 and a switch operating function. A pair of shafts 15a and 15b for pivoting around is formed on the side surfaces 15c and 15d.

Next, the operation of the above-described embodiment will be described with reference to FIGS. 4 to 6. FIG. 4 is a view showing the release state of the lever 15. In this state, the lever 15 is moved by the restoring force of the contact piece 14 to the movable end 14d. A clockwise rotation moment is applied about the shafts 15a and 15b via the shaft 15a and 15b, and the stopper portion 15e of the lever 15 stands still while urging the side wall 11i of the case 11. In this state, the movable contact 14e has a gap G separated from the individual terminal 13, and the fixed contact 14c is in contact with the common terminal 12. When the lever 15 is pushed in from this state to the state shown in FIG. 5, the movable end 14d of the contact piece 14 pushed by the bottom surface 15f of the lever 15 moves counterclockwise to the coil portion 1.
The movable contact 14e comes into contact with the individual terminal 13 and the switch is turned on by rotating around 4a.

If the pushing operation of the lever 15 is further continued from this state, the movable end 14d is moved to the movable contact 14 by the bottom surface 15f of the lever 15.
While the e is in contact with the individual terminal 13, the pivoting operation is performed, and as shown in FIG.
The rotating operation of the lever 15 is completed at the time point when the rib contacts the rib 11h of the case 11. When the pushing operation of the lever 15 is released in this state, the lever 15 is moved to the fourth position by the restoring force of the contact piece 14.
The original release state shown in the figure is restored.

As described above, according to the above-described embodiment, the torsion coil spring-shaped contact piece 14 having the function of connecting to the individual terminal and the function of returning the lever 15, the function of sealing the opening of the case 11 and the contact piece. By arranging the lever 15 having a function of rotating the 14, it is possible to reduce the number of parts,
It has advantages in terms of economy and assembling workability, as well as contact pieces.
By minimizing the number of turns of the coil portion 14a of the coil 14 within a range satisfying the return operation of the lever 15, the contact piece 14 can be thinned in the coil direction and the switch can be thinned.

Although the lever 15 is substantially fan-shaped in the above-described embodiment, the operation portion may have another shape as long as only the portion entering the inside of the case 11 is fan-shaped.

Advantages of the Invention (1) As is apparent from the above embodiment, the present invention has a torsion coil spring-shaped contact piece having a contact function and a lever return function, a case sealing function, and a contact piece rotation. By arranging the lever having the function of making it possible to reduce the number of parts constituting the switch, the cost of the switch and the assembly man-hour can be reduced, and (2) the number of turns of the coil portion of the contact piece. By suppressing the above, the thickness of the contact piece in the coil direction can be reduced, and the switch can be reduced in thickness.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a switch according to an embodiment of the present invention, FIG. 2 is a cross-sectional perspective view of the case, FIG. 3 is a perspective view illustrating the contact mechanism portion, and FIGS. 7 and 8 are sectional views showing the structure of a conventional switch. 11 …… Case, 12 …… Common terminal, 13 …… Individual terminal, 14…
… Contact piece, 14c …… fixed contact, 14e …… moving contact, 15 ……
lever.

Claims (1)

(57) [Scope of utility model registration request] 1. A substantially box-shaped case made of an insulating material and having an opening on the upper surface, a pair of common terminals / individual terminals planted on the bottom surface of the case, and a fixed end having a linear shape made of a conductive material. And a torsion coil spring-shaped contact piece having a fixed contact at its tip and a U-shaped end at the other end and a movable contact at its tip, and a rotation center above the torsion coil portion of this contact piece. The lever comprises a lever rotatably supported above the contact piece and formed so as to close the upper opening of the case. The fixed contact of the contact piece contacts the common terminal, and the movable contact is the movable contact. A switch configured to face the individual terminal with a gap, and to rotate the lever to drive the contact piece to bring the movable contact into contact with the individual terminal.