JPH0210534B2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a switch.

A tumbler switch as shown in FIG. 1 has been commonly used as a switch for opening and closing electric circuits wired inside a house.

This tumbler switch connects a movable contact 2 mounted on a base 1 to an operating knob 4 via a spring 3.
The base 1 is connected to
In other words, the movable contact 2 is attached to and detached from the fixed contact 5 within a plane perpendicular to the mounting surface to directly open and close the electric circuit.

However, in such a configuration, since the spring 3 is disposed perpendicularly to the base 1, the outer shape of the switch becomes thick. There are also seesaw-type switches in which a cam that protrudes inward from the knob operates a movable contact spring that can operate parallel to the board, and a reversing spring holds the knob inverted (for example, Utility Model Publication No. 44-28355). However, similar to the conventional example, the cam protrudes from the knob toward the board, resulting in a thick structure, and the structure is complicated due to the reversal spring.

If a position indicator light indicating the installation position of the switch in the dark or an operation indicator light indicating the operating status of the switch is added to the switch configured as described above, the exposed thickness becomes even more noticeable. It becomes something that does not suit the interior.

Accordingly, an object of the present invention is to provide a switch that can be made smaller and thinner and has a simpler structure.

An embodiment of this invention is shown in FIGS. 2 to 5. That is, this switch includes a base plate 19, a movable contact spring 12a which is shaped like a band with a curved middle portion and has one end fixed to the base plate 19 so that its width direction is perpendicular to the base plate 19. A bearing portion 23c is provided in a direction parallel to the substrate 19 and parallel to the operating direction of the movable contact spring 12a, and an opening 2 for an operation knob is provided near the bearing portion 23c.
3a and covers the substrate 19.
The bearing portion 2 is loosely fitted into the opening 23a.
It is a seesaw type having a shaft 25 in the center that is supported by a shaft 3c, and one piece 22a side is lined up with the convex side of the movable contact spring 12a, and the side part 22b of the one piece 22a is the side edge part 12c of the curved part. An operating knob 22 that is positioned so as to overlap with the base plate 19 and can press the convex surface of the movable contact spring 12a with the side portion 22b of the piece 22a by pushing the side of the piece 22a toward the base plate 19; The movable contact spring 12a is provided with a fixed contact 12b that moves toward and away from the other end of the movable contact spring 12a, which is operated by the pushing operation of the operating knob 22.

To explain the switch of this embodiment in detail, as shown in FIG. and a control circuit 8 for controlling the drive of the triax 7, the triax 7, a trigger diode 9, resistors 10, 11, and
contact portion 12 and position display neon lamp 13;
The arrangement of the resistor 14, operation display LED 15, coil 16, etc. is performed as shown in FIGS. 3 to 5.

As shown in FIG. 3, a chassis 18 is placed on a base 17 formed in a frame shape and fixed directly to a mounting surface such as a wall, and a printed circuit board on which the triax 7, neon lamp 13, LED 15, contact portion 12, etc. are mounted. The board 19 is fixed onto the chassis 18 with spacers 20 and screws 21, and the movable contact spring 12a and fixed contact 12b are configured so that the movable contact spring 12a can move horizontally on the surface of the printed circuit board 19. The movable contact spring 12a of the contact portion 12 is located in an opening 2 formed on the upper surface of the cover 23.
The cover 23 is attached to the base 1 by turning it on and off using an operation knob 22 pivotally connected to the base 1.
7 so that it fits.

One end of the chassis 18 is bent upward to have a U-shaped cross section, and as shown in FIG. The triax 7 disposed on one side of the chassis 19 is fixed to the bent horizontal surface portion 18a of the chassis 18 with a screw 24 through a mounting hole 7a provided in its heat radiation portion.

A notch 17a is formed in one side of the base 17, and a wire stopper 17b is framed inward in a U-shape.
This notch 17a and corresponding notches 18b and 23b formed in one side of the chassis 18 and one side of the cover 23 form a cord insertion portion.

The operation knob 22 has a shaft 2 protruding from both side edges thereof.
5 is attached to the bearings 23c formed at the bottom of both side edges of the opening 23a of the cover 23, and the movable contact spring 12a constituting the contact part 12 is attached to and detached from the fixed contact 12b by raising and lowering the operating knob 22. I try to do that.

The cover 23 is fitted onto the base 17 using the cover 2
A fitting recess (not shown) formed on the inner surface of 3.
Fitting protrusions 17 formed protrudingly on both sides of the base 17
This is done by press-fitting into c....

On the side of the printed circuit board 19 corresponding to the cord insertion section, there are pin-shaped pins for connecting the components of the triax 7 and the control circuit 8 mounted on the printed circuit board 19 to the electrical circuits 6, 6 shown in FIG. The connection terminals 26, 26 of the base 17 are provided so as to protrude downward.
As it is placed on top, the covering 6a of the cord (corresponding to the electric circuits 6, 6 in FIG. 2) disposed in the notch 17a of the base 17 is attached to the connecting terminal 2, as shown in FIG.
6 penetrates through and comes into direct contact with the core wire 6b of the cord.

In FIG. 3, 27 of the base 17 are screw insertion holes for directly screwing the base 17 to a mounting surface such as a wall, and 28 and 29 of the cover 23 are neon lamps 13 arranged on a printed circuit board 19, respectively.
and a peephole for LED15.

With this configuration, the following effects can be obtained.

(1) The electric circuits 6, 6 are turned on and off by the triax 7, and the mechanical on and off is performed by the contact section 12 of another control circuit 8 that controls the triax 7.
(Movable contact spring 12a and fixed contact 12b), even if the amount of current handled increases, there is no need to change the contact capacity of the contact part 12 of the control circuit 8, making the switch thinner and smaller. can be achieved.

(2) The operation knob 22 of this switch is on one side 22a.
The side portion 22b of the movable contact spring 12a overlaps the side edge 12c of the movable contact spring 12a to maintain the off state, and when the piece 22a is pushed into the board 19 side in this state, the side portion 22b moves along the curve of the side edge 12c. While moving, the convex side of the movable contact spring 12a is pushed to approach the board 19, and at the same time, the movable contact spring 12a contacts the fixed contact 12b, and the spring force of the movable contact spring 12a frictionally turns the operating knob 22 into the ON state. Hold. Then, by pressing the other side of the operating knob 22, the above-mentioned OFF state can be returned. In this way, the switch is connected to the fixed contact 12b, the movable contact spring 12a,
Since it is configured with the operating knob 22, the structure is simple, and since the movable contact spring 12a is operated on the side of the operating knob 22, it can be made smaller and thinner.

(3) For connection to the electric line cord, use the notches 17a and 18 of the base 17, chassis 18, and cover 23.
The electric circuit cord is inserted into the cord insertion part constituted by b, 23b, and the pin-shaped connection terminal 26,
Since the connection is made by inserting the wire 26 into the electric line cord, the wiring can be done at the same time as the switch is assembled.

As described above, the switch of the present invention includes a substrate, a movable contact spring having a band-like shape with a curved middle portion, and one end of which is fixed to the substrate so that the width direction thereof is perpendicular to the substrate. a cover that covers the substrate and has a bearing portion in a direction parallel to the substrate and parallel to the operating direction of the movable contact spring, and has an opening for an operation knob near the bearing portion; It is a seesaw type having a shaft in the center that is loosely fitted into the opening and is pivotally supported by the bearing part, one side of which is aligned with the convex side of the movable contact spring, and the side part of the one piece is arranged in the curved part. an operating knob that is positioned so as to overlap a side edge of the piece and can press a convex surface of the movable contact spring with the side part of the piece by pushing the one side into the board side; and an operation knob provided on the board. Since the fixed contact is provided on the other end side of the movable contact spring that is operated by the pushing operation of the operating knob, the following operation and effect can be achieved.

That is, in the seesaw type switch, since the movable contact spring can be actuated at the side of the operating knob, the structure is simpler than the conventional one, and the switch can be made smaller and thinner. a movable contact spring having a strip shape with a curved intermediate portion and having one end fixed to the substrate so that its width direction is perpendicular to the substrate; and the movable contact spring in a direction parallel to the substrate. a cover that covers the substrate and has a bearing section in a direction parallel to the operating direction of the spring and has an opening for an operating knob near the bearing section; and a cover that is loosely fitted into the opening and has the bearing section. It is a seesaw type having a shaft in the center that is pivotally supported by the movable contact spring, one side of which is located on the convex side of the movable contact spring, and the side of the one piece is on the opposite side of the curved part of the movable contact spring from the base plate. an operating knob capable of pressing a convex surface of the movable contact spring with the side portion by engaging with a side edge of the movable contact spring and pushing one side toward the substrate; and a push-in operation of the operating knob provided on the substrate. Since the movable contact spring is provided with a fixed contact that moves toward and away from the other end of the movable contact spring, the following effects can be obtained.

That is, in the seesaw type switch, since the movable contact spring can be actuated at the side of the operating knob, the structure is simpler than the conventional one, and the switch can be made smaller and thinner.

[Brief explanation of drawings]

Fig. 1 is a schematic sectional view of a conventional example, Fig. 2 is a circuit configuration diagram of an embodiment of the present invention, Fig. 3 is an exploded perspective view of its constituent parts, Fig. 4 is a side view of its main parts, and Fig. 5
The figure is an explanatory diagram of connection construction with the electric circuit. 12a...Movable contact spring, 12b...Fixed contact, 12c...Side edge, 19...Printed circuit board, 22...Operation knob, 22a...Single piece, 22b...Side part, 23...Cover , 23a...
...Opening portion, 23c...Bearing portion, 25...Shaft.

Claims (1)

[Claims] 1 a board, a movable contact spring whose middle part is in the shape of a curved strip and whose one end is fixed to the board so that its width direction is perpendicular to the board; and the movable contact spring in a direction parallel to the board. a cover that covers the substrate and has a bearing section in a direction parallel to the operating direction of the contact spring and an opening for an operating knob near the bearing section; It is a seesaw type having a shaft in the center that is pivotally supported by the movable contact spring, and one side of the shaft is aligned with the convex side of the movable contact spring, and the side part of the one piece is positioned so as to overlap the side edge of the curved part. an operating knob that can press the convex surface of the movable contact spring with the side portion of the one piece by pushing the one side toward the substrate; and an operating knob that is provided on the substrate and is operated by pushing the operating knob. A switch equipped with a fixed contact that connects and separates from the other end of a movable contact spring.