JPH0231973Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a switch used for opening and closing a power supply, etc.

As a switch for opening and closing the power supply, etc.
The seesaw switch shown in Figure 1 is often used. In the figure, 1 is a housing, on the bottom plate of which a connecting terminal 3 with a protruding upper end on which a fulcrum structure 2 is formed is implanted, and a fixed contact 4 is attached to the end. A connection terminal 5 is implanted.

Reference numeral 6 denotes a rocking plate, which is a flat plate punched into a rectangular shape and bent at the center.The center part is supported by the fulcrum structure 2, and a movable contact is provided at the end in correspondence with the fixed contact 4. 7 is installed. Reference numeral 8 designates an operating lever, which is pivotally supported by a support shaft 9 and controls the see-saw movement of the rocking plate 6 by a pressing pin 10 that is biased by a spring.

In such conventional switches, the rocking plate 6 is arranged horizontally with the plane facing upward and downward, so the width of the rocking plate 6 becomes the key to making the switch more compact. Manufacturing the moving plate 6 required not only punching but also bending.

The present invention was developed with the aim of downsizing the switch and reducing manufacturing man-hours, with this point in mind. a terminal, a fulcrum structure arranged to protrude upward from the center of the bottom plate of the housing, a second connection terminal implanted in the other end of the bottom plate of the housing and having a fixed contact at its upper end; In a switch comprising a oscillating plate supported by a fulcrum structure and having a movable contact at an end, and a scanning lever for controlling seesaw movement of the oscillating plate, a first connection terminal and the fulcrum structure are connected to each other. The oscillating plate is formed of a flat plate punched into a substantially dogleg shape, and a movable contact is attached to the cut surface of the end thereof, and the oscillating plate is vertically shaped into a substantially dogleg shape. The top of the oscillating plate is supported by the fulcrum structure, and a slit slightly wider than the thickness of the oscillating plate provided in a support block integral with the housing supports the oscillating plate against falling so that it can see-saw. It consists in the fact that

A detailed explanation will be given below based on the illustrated embodiment.

FIG. 2 is a longitudinal cross-sectional view showing an embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along the - line. In the figure, 21 is a housing, which has a fulcrum structure 22 at one end of its bottom plate, and has an integrally formed upper part protruding from the center of the bottom plate, and has a first connection terminal 23.
A second connection terminal 25 to which a fixed terminal 24 is attached is also planted at the other end of the bottom plate.

Reference numeral 26 denotes a swing plate, which is formed of a flat plate punched out into a substantially dogleg shape. A rectangular movable contact 27 is attached to the cut surface of the end of the swing plate 26 . This rocking plate 26 is provided with an arcuate notch 28 at the top of its approximately "dog" shape, and is supported with its plane perpendicular by engaging the arcuate notch 28 with a fulcrum structure. At this time, the mounting position of the movable contact 27 corresponds to the arrangement position of the fixed contact 24.

Reference numeral 29 denotes a support block integrally formed within the housing 21, and a slit 30 having a width slightly wider than the thickness of the swing plate 26 is cut in the center thereof. Since the swing plate 26 is fitted into the slit 30 and supported against falling, it smoothly seesaws without falling even if the plane is supported vertically.

Reference numeral 31 denotes an operating lever, which is rotatably supported on a support shaft 32, and slides a press pin 33, which is biased by a spring, on the upper surface of the swing plate 26 to cause its seesaw movement. It's in control.

Next, the operation of the switch configured in this manner will be explained.

First, when the right side of the operating lever 31 is pressed down, the operating lever 31 rotates clockwise and the pressing pin 33
presses the left side of the fulcrum structure 22 of the swing plate 26, so the movable contact 27 is pressed against the fixed contact 24. Therefore, the two connection terminals 23 and 25 are short-circuited by the swing plate 26, and the switch is turned on. Next, when the left side of the operating lever 31 is pressed down, the operating lever 31 rotates counterclockwise and the pressing pin presses the right side of the swing plate 26, causing the movable contact 27
is separated from the fixed contact 24. Therefore, both connection terminals 2
The connection between terminals 3 and 25 is broken, and the switch is turned off. Since the swing plate 26 is supported by the slit 30 of the support block 29, it will not fall over due to the seesaw movement during this switching operation.

As explained in detail above, according to the present invention, the rocking plate is composed of a substantially dogleg-shaped flat plate, and the flat plate is supported perpendicularly with a slit formed in a support block integrated with the housing. This is to support the rocking plate against falling so that it can see-saw, so just by fitting the rocking plate into this slit, the rocking plate can be maintained in a vertical state.
It is extremely easy to assemble, maintains the strength of the rocking plate, and greatly reduces the space required for the rocking plate.
Not only is it easier to downsize, but the rocking plate can be made only by punching and bending can be omitted, so the number of manufacturing steps can be reduced.

Although the present invention has been explained above with reference to the illustrated embodiment, the present invention is not limited thereto; for example, a changeover type switch equipped with two movable contacts and a fixed contact can be realized in the same way, and various variations can also be realized. This includes:

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an example of a conventional switch, and FIG. 2 is a longitudinal sectional view showing an embodiment of the present invention.
FIG. 3 is a sectional view taken along the - line. 1, 21... Housing, 2, 22... Fulcrum structure,
3, 5... Connection terminal, 23... First connection terminal, 25
...Second connection terminal, 4,24...Fixed contact, 6,2
6... Rocking plate, 7, 27... Movable contact, 8, 31... Operation lever, 9, 32... Support shaft, 10, 33... Press pin, 28... Arc-shaped notch, 29... Support block, 30
...Slit.

Claims (1)

[Scope of utility model registration request] A first connection terminal implanted in one end of the bottom plate of the housing, a fulcrum structure arranged to protrude upward from the center of the bottom plate of the housing, and a first connection terminal implanted in the other end of the bottom plate of the housing. A switch comprising a second connection terminal having a fixed contact at its upper end, a swinging plate supported by the fulcrum structure and having a movable contact at its end, and a scanning lever for controlling seesaw movement of the swinging plate. The first connection terminal and the fulcrum structure are integrally formed, the swing plate is formed of a flat plate punched out in a substantially dogleg shape, and a movable contact is provided on the cut surface of the end thereof. At the same time, the oscillating plate is held vertically and the top of the approximately “C” shape is supported by the fulcrum structure, and the oscillating plate is provided on a support block that is integrated with the housing and has a width slightly wider than the thickness of the oscillating plate. A switch characterized in that the rocking plate is supported by a slit so as to be able to move in a seesaw manner against falling.