JPH0115068Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a short stroke multiple switch used in household products such as audio equipment, TVs, and tillers.

Structure of the conventional example and its problems In the conventional multiple switch, as shown in FIGS. 7 and 8, the upper and lower flanges of the support fitting 2 are attached to the upper and lower walls of the panel 1 in which the upper and lower walls are formed in the switch section. A printed circuit board 4 with a plurality of switches 5 arranged side by side is placed in contact with the front surface of the support fitting 2, and is fixed with screws 3, and is placed between the upper wall of the switch section of the panel 1 and the upper flange of the support fitting 2. A button seat 8, which is integrally connected to a movable part 6 facing each switch 5 via a hinge part 7, is sandwiched therebetween, and a button 9 is fixed to the movable part 6 by welding or adhesive. By the way, in such a multiple switch, the gap between the switch 5 and the movable part 6 of the button seat 8 is constant between each switch 5 to ensure that the switch turns on and off and to make the button feel uniform. It is necessary to do so. However, in the above configuration, the gap between the switch 5 and the movable part 6 must be kept constant even during installation because of variations in dimensions and warpage of the four parts, the panel 1, the support fitting 2, the printed circuit board 4, and the button seat 8. Moreover, when an external force is applied to the button 9 or the panel 1, the change further occurs. It is possible to improve this problem by increasing the number of screws 3 for fixing the panel 1 and the support fittings 2, but this results in problems such as an unfavorable appearance and an increase in cost.

Purpose of the invention In view of the conventional problems, the present invention makes it possible to maintain a constant gap between the switch and the movable part of the button seat.
To provide a multiple switch which can be turned on and off reliably and has a uniform operating feeling among each switch.

Structure of the Invention For this purpose, in the present invention, a printed circuit board on which a plurality of switches are arranged side by side is supported in contact with ribs connecting the upper and lower walls of the switch part of the panel, and engagement grooves are provided at the front ends of the upper and lower walls of the switch part. a button seat having a through hole for each of the switches and having upper and lower engagement portions with the engagement groove is brought into contact with the front surface of the printed circuit board and is engaged and fixed to the panel; A movable part corresponding to each of the switches is integrally connected via a hinge part having spring properties, and a button is fixed to the front surface of each of the movable parts, and the printed circuit board on which the switches are arranged side by side is connected to the rib of the panel and the button. To provide a multiple switch in which a gap between the switch and a movable part connected from a button seat is kept constant by being held between the seats.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. Reference numeral 11 denotes a panel, and the switch portion thereof is formed with an upper wall 12a and a lower wall 12b, and these upper and lower walls 12a, 12b are connected by a plurality of ribs 13. This rib 13 is arranged so as to be located between a plurality of switches 15 arranged in parallel on a printed circuit board 14, and the front part of this rib 13 is cut out so that the printed circuit board 14 can be fitted into it. It is configured to abut and support the printed circuit board 14 on its front end surface. Also, the upper wall 12
The opposing surfaces of the front end portions of the lower wall 12a and the lower wall 12b are undercut to form engagement grooves 16a and 16b. Reference numeral 17 denotes a button seat made of a synthetic resin material, and is provided with through holes through which each of the switches 15 passes. A movable part 20 corresponding to each of the switches 15 is integrally connected to the upper end of this button seat 17 via a first hinge part 19 having spring properties. A pair is formed on each side. Also, button seat 1
A triangular protrusion-shaped engagement portion 21 that fits into the engagement groove 16a of the upper wall 12a is provided at the upper end of the upper wall 12a. A locking member 23 is connected from the lower end of the button seat 17 via a second hinge portion 22 having spring properties.
are connected to each other, and a triangular protrusion-shaped engagement portion 24 that fits into and engages the engagement groove 16b of the lower wall 12b is provided on the surface facing downward when the locking member 23 is bent forward by 90 degrees. A flange 26 is provided on the upwardly facing surface to engage with a flange 25 hanging from the lower end of the movable portion 20 from the front. 27 is a button fixed to the front surface of the movable part 20 by welding or adhesive.

In the above configuration, the printed circuit board 14 on which a plurality of switches 15 are arranged in parallel is held between the rib 13 of the panel 11 and the button seat 17 for each switch 15, so even if the printed circuit board 14 is distorted, it will not be affected. can be fixed and firmly attached,
The dimensions of the switch 15 and the movable part 20 connected from the button seat 17 via the first hinge part 19 can be kept constant. In addition, when the flange 25 at the lower end of the movable part 20 is configured to engage with the flange 26 of the locking member 23, each movable part 20
are reliably aligned in a constant position, and the operating stroke and operating feel are completely uniform between each switch. In this case, the first hinge portion 19 is formed so as to bias the movable portion 19 slightly outward. By doing so, there is no need to increase the molding precision of the hinge portion 19.

Effects of the invention As is clear from the above explanation, the multiple switch of the invention is mounted by sandwiching the printed circuit board on which the switches are arranged side by side between the rib of the panel and the button seat. The gap between the movable part connected to the switch and the switch can be kept constant regardless of variations in dimensions or warpage of the printed circuit board, etc., and the switch can be turned on and off reliably. The operating feel is uniform between the two. In addition, the printed circuit board and button seat can be fixed by simply inserting them into the panel from the front, eliminating the need for mounting brackets and screws as required in the past, reducing work man-hours and reducing costs. Demonstrate.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the present invention,
Fig. 1 is an exploded perspective view, Fig. 2 is a front view of a cassette deck to which the multiple switch according to the present invention is applied, Fig. 3 is a vertical cross-sectional side view before the button seat is installed, and Fig. 4 is the state with the button seat installed. Longitudinal side view of 5th
The figure is a partial front view with the button removed, Figure 6 is a partial perspective view of the button seat, Figures 7 and 8 show a conventional example, Figure 7 is an exploded perspective view, and Figure 8 is a longitudinal side view. be. 11 is a panel, 12a is an upper wall, 12b is a lower wall,
13 is a rib, 14 is a printed circuit board, 15 is a switch, 16a, 16b are engagement grooves, 17 is a button seat,
18 is a through hole, 19 is a hinge part, 20 is a movable part,
21 and 24 are engaging parts, and 27 is a button.

Claims (1)

[Scope of utility model registration request] A printed circuit board on which a plurality of switches are arranged side by side is supported in contact with ribs that connect the upper and lower walls of the switch section of the panel, and engagement grooves are provided at the front ends of the upper and lower walls of the switch section, and through holes for each of the switches are provided. A button seat having upper and lower engagement portions with the engagement groove is brought into contact with the front surface of the printed circuit board to be engaged and fixed to the panel, and movable parts corresponding to each of the switches are connected from the button seat. A multiple switch which is integrally connected via a hinge part having spring properties and has a button fixed to the front surface of each of the movable parts.