JPH02103824A - Push switch - Google Patents

Abstract

PURPOSE:To obtain good luminous intensity distribution from a luminous element by packaging the luminous element on a printed board, and protruding the luminous element to the center of the inside of an actuator through the first opening of the bottom of a casing, thereby reducing the dimension of the height of a switch. CONSTITUTION:An actuator 8 is energized in a push-out direction by a pair of springs 10, and a movable contact of a switch element is in such a state that it is apart from a fixed contact. When a cap 9 is pushed, the actuator 8 moves downward resisting a spring 10 and the movable contact comes into contact with the fixed contact and a luminous element 20 is lit up. The luminous element 20 is broadly arranged at the center of the inside of the actuator 8 so that luminous intensity is well and extensively distributed without poralization so that the letters or marks, and the like on the cap 9 are illuminated clearly. It is unnecessary to do anything other than to secure a space for housing the luminous element 20 in the actuator 8; thereby, it is possible to reduce the dimension of the height of the switch.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application J] The present invention relates to a bushing switch that can be applied to, for example, an operation panel in an elevator or an operation section in an elevator landing.

F Prior Art] As a conventional bushing switch of this type, the
The technique disclosed in Japanese Patent No.-36015 can be mentioned.

FIG. 4 is a sectional view of this conventional bushing switch, and FIG. 5 is a partially enlarged sectional view at the 0 section in FIG. 4.

In the figure, (1) is a printed circuit board, (2) is a sheet-like switch element arranged on the printed circuit board (1), and has a movable contact (3) and a spacer (4) for forming a contact gap. ) and a fixed contact (5). (6) is the right bottom cylindrical casing fixed on the printed circuit board (1), (7) is the opening provided in the center of the bottom of the casing (6>), and (8) is the direction in and out of the casing (6). A cylindrical actuator operably housed only in (
9) is a translucent cap placed on the top of the actuator (8).

(10) is a spring that biases the actuator (8) in the pushing direction; (11) is the actuator (8);
(12) is a locking window provided on the casing (6) to engage with the stopper projection (11); (13) is a locking window of the actuator (8). Suppression protrusion for contact suppression formed at the center of the bottom (14)
is an elastic material provided in the bottom opening (7) of the casing (6), and the suppressing protrusion (13) is connected to this elastic material (14).
) is opposed to the switch element (2).

(15) is a lamp socket protruding from the upper surface of the bottom of the casing (6) at a biased position so as to be located on the circumferential side of the suppressing protrusion (13); (16) is an opening (17) of the actuator (8); (1B) is a contact that is inserted into the lamp socket (15) from the back side of the casing (6), and is connected to the terminal (19) of the lamp (16). is connected.

Next, the operation of the conventional bushing switch configured as described above will be explained.

Now, in this bush switch, the actuator (8) is always urged in the pushing direction by the action of the spring (10), and as shown in FIG. 5, the movable contact ( 3) is a fixed contact (
5). In this state, the cap (
9), when the actuator (8) is moved downward against the action of the spring (10), the switch element (2) is pressed by the suppressing protrusion (13) via the elastic body (14). , the movable contact (3) is brought into contact with the fixed contact (5). And these contacts (3) and (5
), the lamp (16) lights up to display the operating status.

[Problem to be solved by the invention] However, in this conventional bushing switch, the casing (6) avoids the suppressing protrusion (13) for suppressing the switch protruding from the center of the bottom of the actuator (8). A lamp socket (15) is protruded from a biased position on the upper surface of the bottom, and a lamp (15) is connected to the lamp socket (15) through an opening (17) at the bottom of the actuator (8).
16) is installed, it is necessary to secure space in the casing (6) and actuator (8) to accommodate the lamp socket (15) and lamp (16), and the height dimension of the entire switch is becomes very large, and moreover, the light distribution from the lamp (16) to the cap (9) becomes uneven, making it difficult to achieve good light distribution.

Therefore, the present invention allows the light emitting element to be directly mounted on the printed circuit board, thereby making it possible to significantly reduce the height dimension of the switch, and to arrange the light emitting element at the center inside the actuator. It is an object of the present invention to provide a bush switch that can provide good light distribution from the light emitting element.

"Means for Solving the Problems" A bush switch according to the present invention has a substantially bottomed cylindrical casing fixed on a printed circuit board with its bottom surface in contact with the casing, and an actuator mounted in the casing in the in/out direction. The light-emitting element is mounted on the printed circuit board, and the light-emitting element is mounted on the printed circuit board.
The light emitting element is projected into the center of the actuator through the first opening at the bottom of the casing, a contact pressing part is provided at the bottom of the actuator on the circumferential side of the light emitting element, and the contact is pressed through the second opening at the bottom of the casing. A sheet-shaped switch element is arranged on a printed circuit board so as to face the section.

[Operation] In this invention, the light emitting element is directly mounted on the printed circuit board and protrudes into the center of the actuator through the first opening at the bottom of the casing, so the light emitting element is housed within the casing and the actuator. It is only necessary to secure a space for the switch, and the height of the switch can be reduced. Further, since the light emitting element is disposed at the center within the actuator, there is no bias in the light distribution from the light emitting element to the top of the actuator, and a good light distribution can be achieved.

"Example] Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a partially cutaway plan view of a push switch according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line 3-B in FIG. It is a diagram. In addition, in the drawings, the same reference numerals and symbols as in the conventional example indicate the same or corresponding parts as those in the conventional example, and redundant explanation will be omitted here.

In the figure, (1) is a printed circuit board, (2> is a sheet-like switch element arranged on the printed circuit board (1), and as in the conventional configuration shown in FIG. 5, it is connected to a movable contact (3). , a spacer (=1.) for forming a contact gap,
It consists of a fixed contact (5). Reference numeral (6) denotes a substantially rectangular cylindrical casing with a bottom that is fixed on the printed circuit board (1), and the bottom surface of the casing is in close contact with the printed circuit board (1) via the switch element (2). (7a) is the first opening formed in the center of the bottom of the casing (6); (7b)
(8) is a second opening formed in the bottom of the casing (6) on both sides of the first opening (7a);
A rectangular cylindrical actuator is housed inside the actuator so that it can move only in the in/out direction. (9) is a translucent cap attached to the top of the actuator (8).

(10) is a pair of springs interposed between the actuator (8) and the casing (6) on both sides of the first opening (7a), and biases the actuator (8) in the pushing direction. There is.

(11) is a pair of stop protrusions provided on both sides of the actuator (8), and (12) is a stop protrusion (1).
1), a pair of locking windows provided on both sides of the casing (6) to engage with the actuator (8); 14) is an elastic material made of silicone rubber or the like provided in the second opening (7b) of the casing (6), and each of the suppressing protrusions (13) is made of this elastic material (17!11.)
It faces the switch element (2) via.

(20) is a light emitting element mounted on the printed circuit board (1), and the first opening (20) at the center of the bottom of the casing (6)
7a) and protrudes into the center of the interior of the actuator (8). (21) are a plurality of terminals protruding from the light emitting element (20) and connected to the printed circuit board (1). In this embodiment, as is clear from FIG. 1, the pair of pressing protrusions (13) are arranged on both upper and lower sides of the light emitting element (20), and the pair of springs (10) are arranged on both sides of the light emitting element (20). ) are placed on both the left and right sides.

In addition, (22) is the face plate of the elevator operation panel equipped with a bushing switch, and (23) is the casing (
6) to the printed circuit board (1).

Next, the operation of the bush switch of this embodiment configured as described above will be explained.

Now, in this bush switch, the actuator (8) is always biased in the pushing direction by the action of a pair of springs (10), and as shown in FIG. The contact (3) is in a state separated from the fixed contact (5). In this state, when the actuator (8) is moved downward against the action of the spring (10) due to the compression of the cap (9), the pair of pressing protrusions (13) force the actuator (8) through the elastic body (14). The switch element (2) is pressed and its movable contact (3
) is contacted by the fixed contact (5).

When the contacts (3) and (5) of the switch element (2) are brought into contact, the light emitting element (20) is lit to indicate the operating state. At this time, the light emitting element (20
) is largely arranged in the center of the actuator (8), so that the light emitting element (20) can be easily connected to the actuator (8).
) The light distribution is good and even with respect to the cap (9) on the top.
In addition, the illumination is carried out over a wide area, and the letters, marks, etc. placed on the cap (9) are clearly illuminated.

As described above, the bush switch of the above embodiment includes a bottomed cylindrical casing (6) fixed with its bottom surface in contact with the printed circuit board (1), and a structure that allows entry and exit into and out of the casing (6). The spring (1
The actuator (
8) and a first opening (7a) at the bottom of the casing (6).
) and a light-emitting element (20) mounted on the printed circuit board (1) so as to protrude into the center of the interior of the actuator (8) through a Contact pressure part (1
3) and a second opening (7b) at the bottom of the casing (6).
) is constructed from a sheet-shaped switch element (2) disposed on the printed circuit board (1) so as to face the contact pressing part (13) via the contact pressing part (13).

Therefore, according to the bush switch of this embodiment,
The light emitting element (20) is directly mounted on the printed circuit board (1) and protrudes into the center of the actuator (8) through the first opening (7a) at the bottom of the casing (6). 6) and the actuator (8), it is only necessary to secure a space for accommodating and covering the light emitting element (20), and the height dimension of the switch can be reduced. Further, the light emitting element (20) is an actuator (8).
Since the light emitting element (20) is placed at the center of the actuator (8), there is no bias in the light distribution to the cap (9) on the top of the actuator (8), and good light distribution can be achieved over a wide range. can.

In the above embodiment, the sheet-like switch element (2) is composed of two contacts, a movable contact (3) and a fixed contact (5). Either one may be mounted on the pudding 1 to the substrate (1). The movable contact (3) may be made of conductive rubber, in addition to a sheet printed with conductive paste or the like, or a plate-shaped plate with a click action on top of the sheet-like contact. It may also be configured with a spring. Further, the light emitting element (20) may be one for surface mounting on the printed circuit board (1).

[Effects of the Invention] As described above, in the bush switch of the present invention, a substantially bottomed cylindrical casing is fixed onto a printed circuit board with its bottom surface in contact with the casing, and an actuator is inserted into the casing in the in/out direction. are operably fitted together and biased in the extrusion direction by a spring, a light emitting element is mounted on the printed circuit board, and the light emitting element is projected into the center of the interior of the actuator through the first opening at the bottom of the casing. , a contact pressing part is provided at the bottom of the actuator on the circumferential side of the light emitting element, and a sheet-shaped switch element is arranged on the printed circuit board so as to face the contact pressing part through the second opening at the bottom of the casing. Therefore, only a space for accommodating the light emitting element needs to be secured in the casing and the actuator, so the light emitting element can be directly mounted on the printed circuit board, and the height of the switch can be reduced.

In addition, since the light emitting element is arranged at the center of the actuator, there is no bias in the light distribution from the light emitting element to the top of the actuator, so it is possible to achieve a good light distribution from the light emitting element. can.

[Brief explanation of drawings]

1 is a partially cutaway view of a bushing switch according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG. 2. 4 is a sectional view of a conventional bushing switch, and FIG. 5 is a partially enlarged sectional view at the 0 section in FIG. 4. In the figure, 1 niblint board 2: switch element 6: casing 7a: first opening lower b: second opening 8: actuator 10 spring 13: suppressing protrusion 20: light emitting element. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts. Agent: Patent attorney Daikan Masuo and two others Figure 5 1-1 "-1"

Claims (1)

[Claims] (1) A substantially bottomed cylindrical casing that is fixed with its bottom surface in contact with the printed circuit board, and is fitted into the casing so that it can move only in the in/out direction, and is biased in the extrusion direction by a spring. a light-emitting element mounted on the printed circuit board so as to protrude into the center of the actuator through a first opening in the bottom of the casing; a contact pressing portion facing the contact pressing portion through a second opening in the bottom of the casing;
A push switch comprising a sheet-like switch element arranged on the printed circuit board.