JPH0658771B2 - Push button switch for elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a push button switch used for a landing button of an elevator, an operation panel in a car, and the like.

[Conventional technology]

In recent years, pushbutton switches that operate with minute strokes have come to be used as pushbutton switches for elevators.

FIGS. 6 and 7 are views showing a conventional push button switch for an elevator, which is disclosed in, for example, Japanese Utility Model Publication No. 61-36015, and FIG. 6 is a vertical cross-sectional view (however, an orthogonal vertical cross-section is developed. 7), and FIG. 7 is an enlarged view of part VII of FIG.

In the figure, (1) is a printed wiring board, (2) is a sheet-like switch fixed to the surface of the printed wiring board (1), the movable contact (3), the fixed contact (4) and the gap for forming the contact gap. It has a piece (5).
(6) is a bottomed cylindrical frame fixed to the surface of the printed wiring board (1), the bottom of which is in contact with the printed wiring board (1) and an opening (6a) is formed in the center of the bottom. ing. (7) is an elastic body fitted in the opening (6a), (8) is an operating body accommodated in the frame (6) slidably in the axial direction, and an elastic body ( 7)
Is formed with a protrusion (8a), and a hooking portion (8b) that engages with a part of the frame (6) is provided on the side surface. (9) is a translucent cap fitted to the opening end of the operating body (8), (10)
Is a pressing spring provided between the frame body (6) and the operating body (8), (11) is a socket standing on the bottom of the frame body (6), and (12) is a socket.
The light emitting element is attached to (11) and is housed in the empty space of the operating body (8). The latch (8b), push spring (10), socket (1
Although not shown, each of 1) and the light receiving element 12 is provided with two each.

The conventional elevator push button switch is constructed as described above, and the operating body (8) is constantly pushed up by the force of the push spring (10), and the engaging portion (8b) and the frame body (6) are engaged. ， Frame body
Escape from (6) is blocked. At this time, the movable contact (3) and the fixed contact (4) of the sheet-like switch (2) are in a state where they are open to each other.

Here, when the cap (9) is pushed with a fingertip, the operating body (8) descends and the projection (8a) pushes the elastic body (7), so that the movable contact (3) of the sheet-like switch (2) is It contacts the fixed contact (4).
If the push button switch is a call registration switch, the light emitting element (12) receives the light along with the operation of the sheet switch (2) and illuminates the cap (9) to indicate that the call is registered.

[Problems to be Solved by the Invention]

In the conventional elevator push-button switch as described above, the operating body (8) is pushed by the push spring (10) into a sheet-like switch.
Since it is biased away from (2), this push spring
The shape of housing multiple (10) must be made in a very small space, and the design of the spring position has excellent operability, and the light emitting element
(12) has a problem that it is difficult to obtain a good spring property and a proper spring property as a thin switch in a small space.

The present invention has been made to solve the above problems. It is easy to store a spring that is excellent in external operation, has a good light emitting element incorporation property, and has a proper spring characteristic as a thin switch. It is an object of the present invention to provide a push button switch for an elevator that is designed to be.

[Means for Solving the Problems]

In the push-button switch for elevators according to the present invention, a spring for urging the operating body in a direction away from the sheet-like switch is a long leaf spring, and both ends of the spring are bent toward the operating body to surround the light emitting element. It was placed in.

[Action]

In this invention, since the light emitting element is connected to the printed wiring board and housed in the cylinder of the operating body, and the spring is arranged as a leaf spring around the light emitting element, it is used as a mounting space for the light emitting body. The inside is used, and the leaf spring is formed flat, and both ends of the leaf spring are pressed against the operating body.

〔Example〕

1 to 5 are views showing an embodiment of the present invention.
The figure is a plan view (however, the printed wiring board (1) and the front board (23) are removed), FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG.
III-III line sectional drawing of the figure, 4 is a top view of a leaf spring, 5th
The drawing is a right side view of FIG. 4, and the same parts as those of the conventional device are denoted by the same reference numerals.

In the figure, (2) is a sheet-like switch fixed to the surface of the printed wiring board (1), and (6) is a bottomed rectangular tube fixed to the surface of the printed wiring board (1) with screws (21). The frame has a square opening (6
a) has been formed. (7) is an elastic body provided on the sheet-like switch (2), and (8) is a rectangular tube-shaped operating body housed in the frame (6) slidably in the axial direction thereof. Two cylindrical protrusions (8a) contacting the elastic body (7) are formed at the lower end portion, and a hooking portion (8b) that engages with a part of the frame body (6) is protrudingly formed on the side surface. Has been done. (9) is a translucent cap fitted into the open end of the operating body (8), and (9A) is a translucent dial plate inserted between the cap (9) and the operating body (8). , (12) are light-emitting elements mounted and connected on the printed wiring board (1) and housed in the cylinder of the operating body (8), (22) is the bottom of the frame (6) and the operating body (8) A leaf spring provided between the two is formed into an elongated shape, for example, a phosphor bronze plate having a thickness of 0.5 mm, a stainless metal plate, etc., and both ends are cut and bent toward the operating body (8) to form a spring portion (22a), It is arranged on both sides of the light emitting element (12). (23) is a front panel of the operation panel in the car of the elevator, and the cap (9) is loosely fitted to the cap (9) with a square hole (23a).

The operation of the elevator push-button switch configured as described above is similar to that of the conventional device.

That is, the operating body (8) is constantly pushed up by the leaf spring (22), the operating body (8) is pushed down when the cap (9) is pushed, and the sheet-like switch (1) is operated via the protrusion (8a). To do. Since the leaf spring (22) is formed flat, it can be placed in a minute gap between the bottom of the frame (6) and the operating body (8).
Excellent in assembling. Further, since the corner of the operating body (8) and the spring portion (22a) of the leaf spring (22) are in contact with each other, the cap (9)
No matter which position you press, the operation is smooth and stable operability is obtained. Further, since the light receiving element (12) can use the space inside the cylinder of the operating body (8), it is possible to reduce the thickness of the entire push button switch.

In the embodiment, the sheet-like switch (2) is composed of the movable contact (3) and the fixed contact (4), but the fixed contact (4) may be provided on the printed wiring board (1). . Further, the movable contact (3) may be made of a conductive rubber or the like in addition to the sheet printed with a conductive paste or the like. Further, a disc-shaped leaf spring material having a click action may be placed on the sheet-shaped contact.

Further, the light emitting element (12) may be for surface mounting on the printed wiring board (1).

Further, the leaf springs (22) may each be composed of one or may be divided into a plurality of parts. Moreover, a hole is provided in the leaf spring (22),
It is also possible to provide protrusions on the frame body (6) so that they are engaged with each other to prevent the leaf spring (22) from moving.

〔The invention's effect〕

As described above, in the present invention, the spring for urging the operating body in the direction away from the sheet-like switch is a long leaf spring, and both ends thereof are bent toward the operating body and arranged around the light emitting element. Therefore, it is possible to easily design to house the spring, which is excellent in the operation from the outside, to improve the assemblability of the light emitting element, and to make the switch as a whole thinner.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an embodiment of a push button switch for an elevator according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is FIG. III-III line sectional view of FIG. 4, FIG. 4 is a plan view of the leaf spring of FIG. 1, FIG. 5 is a right side view of FIG.
FIG. 6 is a vertical cross-sectional view showing a conventional elevator push button switch, and FIG. 7 is an enlarged view of a portion VII of FIG. In the figure, (1) is a printed wiring board, (2) is a sheet-like switch, (6)
Is a frame body, (8) is an operating body, (12) is a light emitting element, and (22) is a leaf spring. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A printing method comprising a bottomed cylindrical frame fixed to a printed wiring board, slidably housed in the axial direction of the frame, and a spring arranged at the bottom of the frame. In the printer in which a cylindrical operating body biased in a direction away from the wiring board is provided, and a sheet-like switch pressed by the operating body is arranged at a portion of the printed wiring board facing the operating body, the printing is performed. The light-emitting element is formed by connecting a light-emitting body on a wiring board, accommodating the light-emitting body in a cylinder of the operating body, using the spring as a long leaf spring, and bending an end of the spring toward the operating body. A push button switch for elevators, which is characterized by being placed around the.