JPH0143774Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a push button switch with an indicator lamp by providing a chipped light emitting diode corresponding to each of a plurality of push button switches.

As shown in the sectional view of FIG. 1, the pushbutton switch has a dome-shaped projection 3-1 on the inner upper end surface that elastically deforms in the direction of depression when a pushbutton 2 attached to the housing 1 is depressed. a movable contact member 3 made of a rubber sheet on which a conductive rubber contact 4 is attached;
It is composed of a substrate 5 on which a contact pattern 5-1 as a fixed contact is printed at a position opposite to the contact 4, and when the push button 2 is pressed down, the conductive rubber contact 4 short-circuits the contact pattern a, Further, when the user releases the push button 4, the elasticity of the rubber releases the button a.

Conventionally, as shown in the sectional view of FIG. 2, the structure for attaching an indicator lamp to this type of pushbutton switch is to provide a hole for attaching a light emitting diode 7 near the contact pattern 6-1 of the double-sided printed circuit board 6. , a mounting pattern 6-2 is provided on the back side of the printed circuit board, and the mounting pattern 6-2 is provided on the back side of the printed circuit board.
-2, the lead wire of the light emitting diode 7 is soldered and attached, and the light emitting diode 7 is placed in the cavity 9 of the push button 8, and when the light emitting diode 7 is turned on, the lamp display window 8-1 is illuminated. That's what I did.

However, with the recent miniaturization of electronic components, devices incorporating these types of electronic components are becoming smaller and thinner.
Thinness has not been possible due to limitations on the size and mounting height of the light emitting diode. In addition, the printed circuit board must have a contact pattern as a fixed contact on the front surface and a pattern for attaching and fixing the light emitting diode on the back surface, thus requiring a printed circuit board with double-sided patterns.

The present invention was created in view of these drawbacks.
A chipped light emitting diode (hereinafter referred to as a chip) mounting pattern is provided close to the contact pattern as a fixed contact of a plurality of pushbutton switches arranged on a printed circuit board, a chip is mounted on the chip mounting pattern, and the chip is opposed to the chip. A resin plate integrally formed with a protrusion covering the chip at a position and a perforation through which a conductive rubber contact can pass at a position opposite to the contact pattern is adhered to the printed circuit board, and the protrusion of the resin plate is fitted. It is an object of the present invention to provide a push button switch with an indicator lamp, characterized in that the movable contact member provided with a hole is fitted onto a resin plate, and a push button is placed on the protrusion of the movable contact member.

The present invention will be explained below with reference to the drawings.

FIG. 3 is a sectional view showing the main parts of a push button switch with an indicator lamp showing an embodiment of the present invention, and the same reference numerals as in FIGS. 1 and 2 indicate the same parts. 11
10 is a chip attached to the pattern 6-3 of the printed circuit board 6, and 10 is a transparent resin plate attached to the chip 11.
The protrusion 10-1 is integrally formed to cover the chip and protect the chip and improve the scattering effect.

FIG. 4 is an exploded view showing an embodiment of the present invention in which a plurality of push button switches with indicator lamps are arranged.
The same symbols as in FIG. 3 indicate equivalent parts. 6-4 is an insertion hole for the adhesive protrusion 10-3 of the transparent resin plate 10, 1
0-4 is a hole provided so that the conductive rubber contact 4 of FIG. 3 passes through when the dome-shaped protrusion 3-1 of the movable contact member 3 is pressed down with the push button 8 of FIG.
3 is a hole for inserting the protrusion 10-1 of the transparent resin plate 10, and 12 is a connector for connecting a printed circuit board.

FIG. 5 is a perspective view of a button telephone that implements the pushbutton switch with indicator lamp of the present invention, in which 1 is the housing of the telephone, 8 has various functions such as receiving outside calls and internal calls, and has a window for an indicator lamp. Push button, 8-1
1 is a window for an indicator lamp, 14 is a push button of a push button dial, and the push button switch with an indicator lamp of the present invention is related to the push button 8.

Next, the configuration of the present invention will be explained with reference to FIGS. 3, 4, and 5.

The printed circuit board 6 has a contact pattern 6-1 with a pattern interval a and a chip mounting pattern 6-3 arranged parallel to the contact pattern 6-1 as fixed contacts of the switch.
A plurality of chips are arranged in pairs, and a chip 11 is attached to the chip attachment pattern 6-3.

The printed circuit board 6 configured as described above has a perforation 10-4 corresponding to each of the plurality of contact patterns 6-1, a protrusion 10-1 corresponding to each of the plurality of chips 11, and a plurality of protrusions 10-1 corresponding to each of the plurality of chips 11. Fitting hole 6-4
A transparent resin plate 10 on which fixing protrusions 10-3 are disposed corresponding to each of the above is attached to the printed circuit board 6, and the plurality of protrusions 10 disposed on the transparent resin plate are attached to the printed circuit board 6.
-1, and a dome-shaped protrusion 3-1 that elastically deforms corresponding to each of the plurality of contact patterns 6-1,
A movable contact member 3 made of a rubber sheet with a conductive rubber contact 4 attached to the inner upper end surface of the protrusion 3-1 is fitted onto the transparent resin plate 10, the housing 1 is covered, and the push button 8 is attached. By installing the protrusion 10-1 of the transparent resin plate 10 in the cavity 9 of the pushbutton, a pair of chipped light emitting diodes are provided as indicator lamps corresponding to each of the plurality of pushbutton switches. Constructs a pushbutton switch with an indicator lamp.

The present invention has been described above with respect to an embodiment in which an indicator lamp is provided inside the cavity of the push button, but an indicator lamp may also be provided in parallel with the push button in correspondence with the push button switch as shown in Fig. 6. That is clear. In the figure, 13 indicates a lamp cover.

As described above, according to the present invention, a plurality of chipped light emitting diodes are bonded to the pattern of a printed circuit board, and a resin plate with a protrusion facing the chips is attached to the printed circuit board, so that the display can be easily displayed. The height of the push button switch with lamp can be made extremely low, and since the multiple protrusions are integrally molded on the resin plate, it is easy to position the movable contact member when fitting it, and it is also possible to make it into a chip. Since the light emitting diode is attached to a chip mounting pattern provided on the same surface as the contact pattern surface of the printed circuit board, it has various advantages such as being able to be manufactured at a low cost because it only requires a single-sided printed circuit board.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional push button switch, Fig. 2 is a sectional view of a conventional push button switch with an indicator lamp, and Fig. 3 is a sectional view showing the main parts of the push button switch with an indicator lamp of the present invention. Fig. 4 is an exploded view showing an embodiment of the present invention in which a plurality of push button switches with indicator lamps of the invention are arranged, and Fig. 5 shows an example of the push button switch with indicator lamps of the invention used in a button telephone. FIG. 6 is a sectional view showing another embodiment of the push button switch with indicator lamp of the present invention. In the figure, 1... Housing, 2... Push button, 3
...Movable contact member, 3-1...Dome-shaped projection,
4... Conductive rubber contacts, 5 and 6... Printed circuit board, 6-1... Contact pattern, 6-3... Chip mounting pattern, 7... Light emitting diode, 8...
push button with indicator lamp window, 9... cavity;
10...Transparent resin plate, 10-1...Protrusion, 10-
4... Perforation, 11... Chip light emitting diode,
12... Connector, 13... Light cover, 14... Dial push button.

Claims (1)

[Scope of utility model registration request] A movable contact member made of a rubber sheet with contacts attached to the inner upper end surfaces of a plurality of dome-shaped protrusions that elastically deform in the direction in which the push button is pressed, and a movable contact member that faces the contact points provided on the movable contact member. a printed circuit board on which a pattern for mounting a chipped light emitting diode is printed adjacent to the contact pattern on which a plurality of contact patterns are printed as fixed contacts at the fixed positions; and a chipped light emitting diode is mounted on the pattern for mounting the chipped light emitting diode. A protrusion that covers the chipped light emitting diode and allows the light emission to be seen at a position facing the chipped light emitting diode, and a perforation through which each contact of the movable contact member can pass at a position facing the contact pattern are integrated. a molded resin plate, the resin plate is attached to the printed circuit board, the movable contact member having a hole into which the protrusion of the resin plate is fitted is fitted onto the resin plate, and the movable contact A pushbutton switch with an indicator lamp, characterized in that a pushbutton is placed on a protrusion of a member.