JP2597470Y2 - Illuminated pushbutton switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminated push button switch.

[0002]

2. Description of the Related Art Heretofore, some illuminated pushbutton switches have a structure in which a light-emitting element is disposed at the center of the pushbutton switch so that the center of the keytop is brightly illuminated from below.

FIG. 9 is a schematic side view showing a conventional illuminated push button switch of this type. As shown in FIG. 1, the illuminated push button switch 100 includes a shaft
A light emitting element 105 is provided in the inside, a key top 107 is mounted on the shaft 103, and the case 101 is fixed on a hard switch board 110.
At this time, the metal terminals 109, 109 drawn out of the case 101 from the light emitting element 105 are connected to a predetermined pattern of the switch substrate 110 by solders 111, 111.

When the key top 107 is pressed, the pressing portion 108 of the shaft 103 presses a switch contact (not shown) provided on the switch substrate 110 to turn it on.

[0005]

In the illuminated push-button switch, the metal terminal 109 of the light emitting element 105 is connected to the switch board 110 by solder 111, but Freon is used for cleaning the same. . However, the use of chlorofluorocarbon has been restricted in recent years due to environmental problems, which has created a strong demand to avoid the use of solder.

When a so-called flexible substrate having a circuit pattern formed on a resin film is used as the switch substrate 110, the circuit pattern is formed by printing a silver or carbon paste. Cannot be used for the illuminated push button switch 100 having the above structure.

[0007] Also, when a low-cost but heat-sensitive material (such as polyethylene terephthalate) is used as a resin film constituting the flexible substrate, solder cannot be used, and therefore it can be used for the illuminated push button switch 100 having the above structure. Did not.

Further, the above-mentioned conventional illuminated push button switch 100
Is a one-stage type, but this is a two-stage type (key top 1
Pressing 07 lightly turns on the first stage switch contact,
There is no illuminated push button switch in which the second stage switch contact is turned on when pressed strongly), and none of the light emitting elements 105 is in the shaft 103, and the illuminating efficiency is poor.

The present invention has been made in view of the above points, and an object of the present invention is to provide an illuminated push button switch having a structure in which a light emitting element is housed in a shaft of a push button switch, wherein a metal terminal of the light emitting element is provided. An object of the present invention is to provide an illuminated push button switch that can be connected to a switch board without using solder and that can easily constitute a two-stage illuminated push button switch.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a case, a shaft housed in the case so as to be vertically movable, and a switch contact disposed under the shaft and located at a predetermined position. And a resilient member for pushing up the shaft upward, wherein the shaft has a cavity therein, and a light emitting element is accommodated in the cavity of the shaft and the light emission is provided. A metal terminal led out of the element is projected outward from the shaft and bent downward so that the tip of the metal terminal is brought into contact with a contact pattern provided on the surface of the switch board, and the metal terminal is further inserted between the case and the tip of the metal terminal. An illuminated pushbutton switch was formed by pressing the tip of a metal terminal against a contact pattern on the surface of a switch substrate by an elastic member which constantly urges downward.

Further, the present invention provides a case, a shaft housed in the case so as to be vertically movable, a first switch board disposed below the shaft and provided with a switch contact at a predetermined position, and a shaft. And a resilient member that pushes the shaft upward, wherein the shaft has a cavity therein.
A light-emitting element is housed in the cavity of the shaft, and a metal terminal derived from the light-emitting element is protruded from the shaft to the outside.
Contact the contact pattern provided on the switch board surface of
The tip of the metal terminal is pressed into contact with the contact pattern on the surface of the first switch board by an elastic member that constantly urges the metal terminal downward between the case and the tip of the metal terminal. An illuminated push-button switch is configured by disposing a second switch board, which is vertically movable and provided with a switch contact at a predetermined position, below the first switch board.

The present invention also provides a case, a shaft housed in the case so as to be vertically movable, a first switch board disposed below the shaft and provided with a switch contact at a predetermined position, and a shaft. A resilient member that pushes upwardly, and a second switch board disposed below the first switch board and provided with a switch contact at a predetermined position thereof,
The shaft is provided with a cavity therein, the light emitting element is housed in the cavity of the shaft, and a metal terminal derived from the light emitting element is projected outward from the shaft and bent downward to form a tip thereof. The contact of the metal terminal is brought into contact with the contact pattern provided on the surface of the second switch substrate, and the distal end of the metal terminal is pressed between the case and the distal end of the metal terminal by an elastic member which constantly urges the metal terminal downward. To form an illuminated push-button switch.

[0013]

According to the present invention, the tip of the metal terminal of the light emitting element abuts on the contact pattern provided on the switch substrate and is strongly contacted by the elastic force of the elastic member. Become.

Further, a two-stage illuminated push button switch having a structure in which the light emitting element is housed in the shaft can be easily constructed.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing one embodiment of an illuminated push button switch according to the present invention. As shown in FIG. 1, the illuminated push button switch 1 includes a switch board 10, a case 20, a shaft 30, elastic members 40 and 40,
It is composed of a light emitting element 43 and leaf springs 49,49. Hereinafter, each component will be described.

First, the switch substrate 10 comprises two flexible substrates 11 and 13 made of a resin film and a spacer layer 12.
And the two flexible substrates 11,
The switch contact 15 is formed by contacting contact patterns (18, 18 shown in FIG. 5) provided on the opposing surfaces of the switch 13 respectively. On the upper surface of the switch board 10, contact patterns 16, 16 for pressing the tips of metal terminals 45, 45 of the light emitting element 43 described below are provided.
Two through holes 17 are provided. Switch board 1
A reinforcing plate 200 for reinforcing this is attached to the back surface of 0. Similarly, four through holes (not shown) are provided in the reinforcing plate 200 at positions facing the four through holes 17.

FIGS. 2A and 2B show the case 20, wherein FIG. 2A is a plan view, FIG. 2B is a sectional view taken along line AA of FIG. 2A, and FIG. It is BB sectional drawing of a). As shown in FIG. 1 and FIG. 1, the case 20 is made of a synthetic resin, and has a through hole 21 penetrating vertically therein.

Also, on both sides of the upper end of the case 20, a flange 2 is provided.
3 and 23 are provided, and grooves 25 and 25 for locking a leaf spring 49 described below are provided on the lower surface of the portion protruding outside the collar portions 23 and 23. Notches 27, 27 are formed in the central portions of the flanges 23, 23 for inserting metal terminals 45, 45 of the light emitting element 43 described below.
Is provided.

Below the inner surface of the case 20, two V-shaped grooves 29, 29 are provided. These grooves 29, 29
Include one end sides 41, 41 of the resilient members 40, 40 described below.
Is locked.

On the inner surface of the case 20 on the side where the grooves 29, 29 are not provided, a guide groove 5 extending in the vertical direction and slidably guiding the guide protrusions 35, 35 of the shaft 30 described below.
1, 51 are provided. At the four corners of the lower end of the case 20, locking projections 53 are projected.

FIG. 3 is a view showing the shaft 30, wherein FIG. 3 (a) is a front view, FIG. 3 (b) is a right side view, and FIG. 3 (c) is a sectional view taken along the line CC of FIG. As shown in FIG. 1 and FIG. 1, the shaft 30 is made of a synthetic resin, and has a concave cavity 31 for accommodating a light emitting element 43 described below. In the center of the two opposing side surfaces, cut grooves 33, 33 extending in the vertical direction are provided.

The guide projections 35, which extend in the vertical direction, are provided below the outer sides of both sides on which the cut grooves 33, 33 are not provided.
35 are provided. Also, on the lower surface of the shaft 30,
Elongated grooves 37 are provided for locking one end sides 42 of the elastic members 40 described below. In the center of the lower surface of the shaft 30, a hemispherical projection 39 is provided.

Next, as shown in FIG. 1, the resilient members 40, 40 are constituted by U-shaped springs. Both ends 41, 42 of the resilient members 40, 40 are engaged with the groove 29 of the case 20 and the groove 37 of the shaft 30, respectively.

Next, as shown in FIG. 1, the light emitting element 43 is formed by extending metal terminals 45, 45 from a light emitting section 44. Each of the metal terminals 45, 45 is bent downward at a substantially right angle, and the vicinity of the distal end thereof is bent outward and upward to form a locking portion 46 for locking a lower edge 49b of a leaf spring 49 described below. It is configured.

Next, as shown in FIG. 1, the leaf springs 49, 49 are formed by processing a spring plate material into a T shape.

To assemble the illuminated pushbutton switch 1, first, the shaft 30 is inserted into the through hole 21 of the case 20 from below. Next, the resilient members 40 and 40 are inserted from below the through hole 21 of the case 20, and at this time, both ends 41 and 42 of the resilient members 40 and 40 are respectively inserted into the grooves 29 and 29 of the case 20 and the shaft 30. Groove 37, 3
7 (the engagement state is shown in FIG. 5).

Next, the light emitting element 43 is housed in the case 20 from above the case 20. At this time, the metal terminals 45, 45 of the light emitting element 43 are connected to the cut grooves 33, 33 of the shaft 30 and the notches 27 of the case 20. , 27.

Next, the upper edges 49a, 4 of the leaf springs 49, 49
9a is engaged with the grooves 25, 25 of the case 20, and the lower edges 49b, 49b are engaged with the locking portions 46, 46 of the light emitting element 43.
(The engaged state is shown in FIG. 5). As shown in FIG. 5, the length of the leaf spring 49 in the vertical direction is slightly longer than the interval between the groove 25 of the case 20 and the locking portion 46 of the light emitting element 43. As a result, the metal terminals 45, 45 of the light emitting element 43 are always resiliently downwardly with respect to the case 20.

Finally, the locking projection 53 of the case 20 is inserted into the through-hole 17 of the switch board 10 and the through-hole (not shown) of the reinforcing plate 200, and the ends thereof are heat-sealed to complete the illuminated push button switch 1. . The state at this time is shown in FIGS.

FIG. 4 is a perspective view of the illuminated push button switch 1 assembled, and FIG. 5 is a schematic sectional side view of the illuminated push button switch 1. As shown in both figures, when the case 20 is fixed on the switch substrate 10, the metal terminals 45 of the light emitting element 43,
The portions near both ends of 45 contact the contact patterns 16 provided on the switch substrate 10 and the leaf springs 49
Will be strongly contacted by the resilience of, and the connection will be secure.

Although a key top is originally mounted on the shaft 30, it is omitted from the description of the above embodiment.

When the shaft 30 is pressed in FIG. 5, the shaft 30 descends against the elastic force of the elastic members 40, 40, as shown in FIG. 15 is pressed to turn on between the contact patterns 18, 18 (see FIG. 5) provided on both flexible substrates 11, 13.

When the pressing of the shaft 30 is released, the shaft 30 returns to the original position by the elastic force of the elastic members 40, 40, and the switch contact 15 is turned off.

As described above, according to the above embodiment, the metal terminals 45, 45 of the light emitting element 43 can be securely connected to the contact patterns 16, 16 of the switch substrate 10 without using solder.

FIG. 7 is a schematic sectional side view showing another embodiment of the illuminated push button switch according to the present invention. The illuminated push button switch 2 according to this embodiment is an illuminated push button switch having a mechanism capable of performing a two-stage on / off operation. The same parts as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, the illuminated push button switch 2 is different from the illuminated push button switch 1 in that the width of a switch board 10 '(hereinafter referred to as "first switch board 10'") and a reinforcing plate are provided. The width of 200 ′ is substantially the same as the width of the case 20, a pressing portion 201 is provided at the center of the lower surface of the reinforcing plate 200 ′, and these are housed in another storage case 60 so as to be able to move up and down. A projection 6 mounted on another second switch substrate 70 and provided on the lower surface of the storage case 60
1 is that the second switch substrate 70 and the reinforcing plate 75 are penetrated, and the lower surface thereof is heat-sealed and fixed.

The second switch substrate 70 has a spacer layer 66 interposed between the two flexible substrates 65 and 67, and the switch contacts 71 are formed by providing opposed contact patterns 65a and 67a at the center thereof. Further, a click plate 77 is mounted on the switch contact 71. The pressing portion 201 of the reinforcing plate 200 'is located on the click plate 77.

FIG. 8 is a perspective view of a main part showing the first switch substrate 10 'and the second switch substrate 70. As shown in FIG. As shown in the figure, both switch substrates 10 'and 70 are formed by bending one flexible substrate twice with a spacer layer interposed therebetween. The spacer layer may be formed by applying an insulating layer on the flexible substrate,
Another film may be inserted. As shown in the figure, a through hole 72 for penetrating the projection 61 of the case 60 is provided in the second switch substrate 70.

In FIG. 7, if the elastic force of the elastic members 40, 40 in the vertical direction is made weaker than the elastic force of the click plate 77 in the vertical direction, when the shaft 30 is pressed, first the case 20 is pressed. With respect to the shaft 30, the switch contact 15 is turned on by the projection 39,
Is strongly pressed, the reinforcing plate 200 'descends together with the shaft 30 and the case 20, and the pressing portion 201 inverts the click plate 77 to turn on the switch contact 71 thereunder. When the pressing on the shaft 30 is released, the switch contacts 71 and 15 are turned off by the reverse operation.

In this embodiment, the light-emitting element can be mounted without using solder, and the light-emitting element can be easily housed inside the shaft despite being a two-stage push button switch.

FIG. 10 is a view showing still another embodiment of the illuminated push button switch according to the present invention, wherein FIG. 10 (a) is a schematic side sectional view, and FIG. 10 (b) is a view similar to FIG. It is a schematic side sectional view in a perpendicular direction. The illuminated push button switch 3 is also an illuminated push button switch having a mechanism capable of performing a two-stage on / off operation. The illuminated push button switch 1 shown in FIG.
The same or corresponding parts are denoted by the same reference numerals, and detailed description thereof will be omitted.

This embodiment is different from the illuminated push button switch 1 in that the first and second switch substrates 85,
80, and the first switch substrate 85 is mounted on the switch contact 81 of the lower second switch substrate 80 via the click plate 83. At this time, the switch contact 87 of the first switch board 85, the switch contact 81 of the second switch board 80, and the projection 39 of the shaft 30 are arranged on the same straight line. The case 20 is fixed on the second switch substrate 80.

In this embodiment, notches 91, 91 are provided near the lower end of the opposing side wall of the case 20, and projections 93, 93 are provided therein.
The positioning is performed by inserting holes 90, 90 provided in the switch substrate 85 of FIG.

Also in this embodiment, like the illuminated push button switch 2 shown in FIGS. 7 and 8, the first switch board 85 and the second switch board 80 are formed by bending a single flexible board. It is configured by overlapping via a spacer layer.

When the shaft 30 is pressed, the projection 39 descends and the switch contact 87 of the first switch substrate 85 is turned on. When the shaft 30 is further pressed,
The click plate 83 is inverted, and the switch contact 81 of the second switch substrate 80 is turned on.

Also in this embodiment, both ends of the metal terminals 45, 45 of the light emitting element 43 are connected to the leaf springs 49, 4 respectively.
9, the second switch substrate 80
Is resiliently contacted with a contact pattern (not shown) provided on the upper surface of the device, so that the connection is ensured without using solder.

[0047]

As described in detail above, according to the illuminated push button switch of the present invention, the terminals of the light emitting element can be easily connected to the substrate without using solder, and the two-stage illuminated push button switch is provided. Has an excellent effect that it can be easily configured.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of an illuminated push button switch according to the present invention.

FIG. 2 is a view showing a case 20.

FIG. 3 is a view showing a shaft 30;

FIG. 4 is a perspective view of the illuminated push button switch 1;

FIG. 5 is a schematic side sectional view of the illuminated push button switch 1.

FIG. 6 is a diagram illustrating the operation of the illuminated push button switch 1.

FIG. 7 is a schematic side sectional view showing another embodiment of the illuminated push button switch according to the present invention.

FIG. 8 is a perspective view of a main part showing a first switch substrate 10 'and a second switch substrate 70;

FIG. 9 is a schematic side view showing a conventional illuminated push button switch.

FIG. 10 is a view showing still another embodiment of the illuminated push button switch according to the present invention.

[Explanation of symbols]

 1,2,3 Illuminated pushbutton switch 10 Switch board 15 Switch contact 16 Contact pattern 20 Case 30 Shaft 31 Cavity 40 Resilient member 43 Light emitting element 45 Metal terminal 49 Leaf spring 60 Storage case 71,81,87 Switch contact 10 ', 85 first switch board 70, 80 second switch board

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tsutomu Shimada 335 Karijuku, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Teikoku Communication Industrial Co., Ltd. −61929 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01H 13/02

Claims (3)

(57) [Scope of request for utility model registration] 1. A case, a shaft housed in the case so as to be movable up and down, a switch board disposed below the shaft and provided with a switch contact at a predetermined position, and a bullet for pushing the shaft upward. A push button switch including a light emitting member, wherein a hollow is provided in the shaft, a light emitting element is housed in the hollow of the shaft, and a metal terminal derived from the light emitting element is projected from the shaft to the outside. elasticity with its tip bent downward into contact with the contact pattern provided on the switch substrate surface, further urges the metal terminal between the tip of the case and the metal terminal always downward
An illuminated push-button switch, wherein a tip of a metal terminal is pressed against a contact pattern on a surface of a switch substrate by a member . 2. A case, a shaft housed in the case so as to be movable up and down, a first switch board disposed below the shaft and provided with a switch contact at a predetermined position thereof,
And a resilient member for pushing the shaft upward.
The shaft is provided with a cavity therein, the light emitting element is housed in the cavity of the shaft, and a metal terminal derived from the light emitting element is projected outward from the shaft and bent downward to form a tip thereof. Elasticity that abuts the contact pattern provided on the surface of the switch substrate and constantly biases the metal terminal downward between the case and the tip of the metal terminal.
A second member in which the tip of the metal terminal is pressed into contact with the contact pattern on the surface of the first switch substrate by a member , and the case is further movably stored in another storage case, and a switch contact is provided at a predetermined position thereof. An illuminated push-button switch, wherein the switch board is disposed below the first switch board. 3. A case, a shaft housed in the case so as to be vertically movable, a first switch board disposed below the shaft and provided with a switch contact at a predetermined position thereof,
A resilient member for pushing the shaft upward, and a second switch substrate disposed below the first switch substrate and provided with a switch contact at a predetermined position, wherein the shaft has a cavity therein. A contact for accommodating the light-emitting element in the cavity of the shaft, projecting a metal terminal derived from the light-emitting element to the outside from the shaft, and bending the metal terminal downward to provide a tip thereof on the surface of the second switch substrate. An elastic member that abuts the pattern and constantly biases the metal terminal downward between the case and the tip of the metal terminal.
Illuminated pushbutton switch, characterized in that it allowed pressed against the tip of the metal terminals to the contact pattern of the second switch substrate surface at.