JPH0744863U - Membrane switch device with electronic parts - Google Patents

Abstract

(57) [Summary] (Correction) [Objective] To provide a membrane switch device with an electronic component, which has a simple structure, is made compact, and can reduce the manufacturing cost. A printed wiring board associated with contacts of a switch group is provided on an upper surface of the printed wiring board, and a plurality of through holes for lead wires connected to the printed wiring board are formed in the printed wiring board. A spacer 2 of extruded foam molded polypropylene having a constant thickness is stacked, and a through hole 2a having a relatively large size is provided in the thickness direction of the spacer 2, and a click plate and a push member are provided in the through hole as a switch component. Stores plates, etc.
A lead wire 9a of the light-emitting diode 9 is formed in a position adjacent to a to form a relatively small through hole for accommodating the light-emitting diode 9 in a corresponding state from the substrate side to the spacer 2 side and connects with the printed wiring. Was bent in a U-shape on the back side of the substrate, and was housed upward using the through hole of the substrate 1 and the through hole of the spacer, and the translucent coating sheet 3 was provided on the upper surface of the spacer 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a membrane switch device with an electronic component used as an operation switch portion of a control panel.

[0002]

[Prior art]

 Membrane switch devices that have a large number of electronic circuit switches integrally arranged in a plane have been available. Therefore, when mounting a diode, a resistor, or the like, which is an electronic component related to the switch group, to the switch device, usually, another board on which the electronic component or the like is mounted is formed in addition to the switch device The substrate and the switch device are appropriately connected.

[0003]

[Problems to be solved by the device]

 In order to increase the usefulness of the switch device, it is desirable to mount the electronic components related to the switch group in the device simply and compactly. However, the above-mentioned conventional electronic component mounting means is not yet sufficiently compact and requires a substrate on which electronic components are mounted in addition to the switch device, thus complicating the structure and increasing the cost. is there.

The present invention has been made to solve the above problems, and provides a membrane switch device with an electronic component having a simple structure, a compact structure, and a low manufacturing cost. The purpose is to

[0005]

[Means for Solving the Problems]

 The present invention has a substrate on which printed wirings related to contacts of a switch group are provided, and a large number of through holes for lead wires connected to the printed wirings are formed on the upper surface of the substrate. On the other hand, a spacer of a constant thickness made of extruded foamed polypropylene is stacked, and a relatively large-sized through hole is provided in the thickness direction of the spacer. A plate or the like is housed, and vertical grooves are formed in the left and right edges of the push plate, while the left and right ends of the click plate are formed with protrusions that rise vertically to a certain height. Of the printed wiring board.A relatively small through hole for accommodating the light emitting diode is formed in a position adjacent to the above through hole so as to correspond from the substrate side to the spacer side. The light emitting diode connected to The bent line is bent in a U shape on the back side of the substrate and is housed upward by using the through hole of the substrate and the through hole of the spacer, and a translucent cover sheet is provided on the upper surface of the spacer. To do.

[0006]

[Action]

 In the product of the present invention, the substrate constituting the membrane switch device is commonly used for mounting electronic parts. Also, when the tip ends of the leads of the electronic component are directly fitted into the through holes in the thickness direction of the substrate, the leads are cut into a fixed length as short as possible and bent appropriately. This makes the product of the present invention as thin as possible.

[0007]

【Example】

 FIG. 1 is a perspective view showing the front side of the product of the present invention, FIG. 2 is a perspective view showing the back surface of the product, and FIG. 3 is an explanatory view showing a sectional structure of the product. In the figure, 1 is a substrate, 2 is a spacer that is provided on the upper surface of the substrate 1, and 3 is a cover sheet that is provided on the upper surface of the spacer 2.

The substrate 1 is formed of a relatively hard material which is usually used, and as shown in FIG. 3, at least the upper surface of the substrate 1 is provided with a printed wiring line 4 associated with the contacts of the switch described below. Eggplant In this example, the printed wiring 5 is also provided on the back surface of the substrate 1.

The spacer 2 has a constant thickness, and a large number of rectangular through holes 2 a for mounting the switch 6 components are formed in the thickness in the thickness direction. The components of the switch 6 of this example include a plus contact 6a, a minus contact 6b, a click plate 6c and a push plate 6d. Further, the above-mentioned click plate 6c is made of an electrically conductive elastic thin plate, and is configured to emit a clicking sound when elastically deformed. As the material of the spacer 2, extruded foamed polypropylene is used, which facilitates the processing of the spacer and is inexpensive.

The cover sheet 3 is made of a flexible synthetic resin agent and has a function of restricting the escape of constituent parts of the switch 6. The surface of the cover sheet 3 is colored, and the switch 6 is also colored. A rectangular frame 3a for indicating the position where the switch is present, characters 3b for indicating the switch name, etc. are entered.

The above-mentioned configuration is a membrane switch device in which switches 6 are arranged in a plane, but the present invention is a device in which electronic parts related to the switches 6 such as diodes and resistors are mounted in a fixed manner on the device. Eggplant.

Here, an example of mounting the above electronic component on the membrane switch device will be described. That is, when the diodes are mounted, as shown in FIG. 3, through holes are formed in the substrate 1 at the positions where the diodes are to be mounted so as to form pairs of through holes in the thickness direction, and each through hole has a collar. A conductive ring 7 is attached so as to be appropriately connected to the printed wirings 4 and 5.

Then, after cutting the lead 8a of the diode 8 to be mounted to an appropriate length, each lead 8a is bent at about 90 degrees, and then when the substrate 1 is in the single state, the diode 8 is removed. The tips of the leads 8a are inserted into the conductive rings 7 and 7 in a fixed arrangement, the tips are aligned with the upper surface of the substrate 1, and then the tips of the leads 8a and the conductive ring 7 are joined by soldering or the like. . It should be noted that the resistance may be attached in accordance with the diode.

When the light emitting diode (LED) 9 is mounted, the through hole 1a having a slightly larger diameter in the thickness direction of the substrate 1 is formed as shown in FIG. It is provided in pairs. Then, after cutting each lead 9a of the light emitting diode 9 to be mounted to an appropriate length, these leads 9a. ． ． Is bent approximately 180 degrees, and the tips of the leads 9a and the conductive ring 7 are joined by soldering or the like so that the diodes 9 are arranged in a fixed state when the substrate 1 is in a single state.

On the other hand, it is necessary to form a space in the spacer 2 in which the light emitting diode 9 should be located. Therefore, a through hole 2b in the thickness direction is formed in advance in the spacer 2 at that position.

After these operations, the spacer 2 is placed on the upper surface of the substrate 1 in an overlapping manner. At this time, in this example, since extruded foamed polypropylene is used as the spacer 2, the solder swelling p as shown in FIG. 3 does not cause any trouble in the heavy installation work. However, if the spacer 2 is made of another hard material, it is necessary to process the spacer 2 or the like in order to cope with the swelling p of the solder.

Further, the portion 3c of the cover sheet 3 which is directly above the light emitting diode 9 is made in a light transmissive state. Further, when a large number of light emitting diodes 9 are mounted as in this example, it is preferable to display the function as a list 3d corresponding to each diode 9 as shown in FIG.

Although an example of mounting other electronic components is omitted, it may be configured according to the diodes 8 and 9 and the like. The above-described product of the present invention is thin and has a simple structure, but is robust because the substrate 1 and the spacer 2 function as a strength member.

[0019]

[Effect of device]

 According to the present invention, which is configured as described above, electronic components are directly mounted on a membrane switch device in which switches are arranged in a plane. Therefore, another substrate for mounting electronic components or a relative position between the substrate and the membrane switch device is mounted. This eliminates the need for a supporting member for regulating the structure, simplifies the structure, and makes the overall size (particularly the thickness) extremely compact, which can significantly reduce the manufacturing cost.

The use of extrusion-foam-molded polypropylene as the spacer is extremely effective in that the spacer itself can be easily processed and the substrate and the spacer can be superposed on each other, and the cost can be further reduced. is there.

[Brief description of drawings]

FIG. 1 is a perspective view showing the front side of a device of the present invention.

FIG. 2 is a perspective view showing the back side of the same product.

FIG. 3 is an explanatory view showing a cross-sectional structure of the same product.

[Explanation of symbols]

 1 substrate 2 spacer 2a through hole 4, 5 printed wiring 6 switch 8, 9 diode

Claims (1)

[Scope of utility model registration request] 1. A printed circuit board, which is provided with printed wirings related to contacts of a switch group, on a top surface thereof, and has a large number of through holes for lead wires connected to the printed wiring board. On the other hand, a spacer having a constant thickness made of extruded foamed polypropylene is stacked, and a through hole having a relatively large size is provided in the thickness direction of the spacer, and a click plate and a push plate as a switch component are provided in the through hole. Etc., and vertical grooves are formed in the left and right edge portions of the push plate, while the left and right ends of the click plate form projection pieces that rise vertically to a certain height, and the projection pieces are attached to the push plate. A relatively small through hole for accommodating the light emitting diode is formed in a position adjacent to the above through hole so that the light emitting diode is accommodated in the vertical groove so as to correspond from the side of the substrate to the side of the spacer. LED leads to be connected An electronic device characterized in that a wire is bent in a U-shape on the back surface side of a substrate and is housed upward by utilizing the through hole of the substrate and the through hole of the spacer, and a translucent cover sheet is provided on the upper surface of the spacer. Membrane switch device with parts.