JP4393124B2 - switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a switch that moves an operation part up and down to switch an electric circuit, and in particular, has an illumination surface, improves visibility, responds to various operational touch needs, and responds to thinner and smaller equipment. The present invention relates to an illuminated switch.
[0002]
[Prior art]
FIG. 6 is a cross-sectional view of a conventional illuminated switch, and shows an example in which a light emitting element 13 is provided above the contact mechanism.
FIG. 7 is a cross-sectional view of another conventional illuminated switch, in which the contact mechanism portion and the light emitting element 20 are provided separately.
[0003]
[Problems to be solved by the invention]
In the conventional illuminated switch shown in FIG. 6, a contact mechanism is formed by a base 11 from which a terminal 12 is projected and a movable contact piece 10 which is formed by bending an elastic plate such as a phosphor bronze for a spring to obtain a click action characteristic. Since the light emitting element 13 is arranged above the contact mechanism portion, a large arrangement space is required for connection of the light emitting element 13. In addition, the height of the operation unit 7 is also required to prevent the operation unit 7 from being laterally shaken, and the height of the housing 8 constituting the switch body and the size for ensuring a uniform illumination surface are both less than a certain level. Space making was difficult.
Further, the conventional illumination type switch shown in FIG. 7 constitutes an illumination unit in which the contact mechanism unit composed of the base 17 and the movable contact piece 16 and the illumination unit are arranged independently for space saving. Since the lens 19 and the light emitting element 20 are provided on the side surface, there is a problem that the length of the switch is increased.
The present invention solves the above-mentioned problems, arranges a light emitting element below a contact built in a contact mechanism provided below the operation unit, and illuminates the operation unit formed of a translucent member for visibility. An object of the present invention is to provide an illumination type switch that enhances the space and saves space.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a contact main body in a switch main body comprising a base and a cover projecting a plurality of terminals, and the switch main body from a through hole formed in a substantially central portion of the cover. A switch comprising a head part protruding upward and an operation part formed integrally with a reversing part formed in an approximately dome shape by an elastic member below the head part, wherein the operation part is formed of a translucent member. The contact mechanism portion is provided with a contact at a substantially central portion in the reversing portion, and one or a plurality of light emitting elements are disposed in the reversing portion around the lower portion of the contact portion, and downward from the through hole of the cover. an inclined surface toward formed annularly, and the head uniformly illuminated capable configuration is reflected by the inclined surface of the light located above the front Symbol reversing section from the light emitting element leaks to the switch body Is.
Further, a cover constituting the switch body is formed of a translucent member, and light of a light emitting element disposed in the reversing portion around the lower part of the contact mechanism unit illuminates the cover formed of the translucent member. It is comprised so that it may do.
Furthermore, either one of the light emitting elements of a plurality deployed in the inverted portion of the periphery of the lower contacts constituting the contact mechanism unit, the current limiting element.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
According to the present invention, a contact mechanism is disposed in a switch body including a base and a cover projecting a plurality of terminals, and a head projecting above the switch body from a through hole formed in a substantially central portion of the cover. And an operating part integrally formed with a reversing part formed in an approximately dome shape with an elastic member below the head, the operating part is formed of a translucent member, and the contact mechanism part is A contact is provided at a substantially central portion in the reversing portion, and one or a plurality of light emitting elements are provided in the reversing portion around the lower portion of the contact, and an inclined surface is annularly formed downward from the through hole of the cover. formed in, the so light from the light-emitting elements are configured to allow the head uniform illumination located above the front Symbol reversing portion is reflected by the inclined surface leakage to the switch body, the light emitting element Are the contacts that make up the contact mechanism. Without creating shadows are shielded, with excellent feature that is illuminated inverted portion are integrally formed with the head.
[0006]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagonal sectional view showing an embodiment of the switch of the present invention, FIG. 2 is a central sectional view thereof, FIG. 3 is an exploded perspective view thereof, and FIG.
In addition, FIG. 5 is a main part perspective view showing a light emitting element arrangement method.
[0007]
In these drawings, a printed circuit board 3 constituting a contact mechanism portion is provided by providing a hole 6c having a stepped portion and a recessed portion 6d on a bottom surface portion 6b inside a base 6 constituting a switch body portion. A contact point 2d is formed on the back surface of the operation unit 2 disposed opposite to the electrode 3a provided in the contact portion 2a to form a conduction path in contact with the electrode 3a.
The printed circuit board 3 is provided with a terminal hole 3b and a light projecting hole 3c, and a plurality of terminals 4 each provided with a flange 4a are mounted for positioning, and the light emitting element 5 is inserted into the light projecting hole 3c from below the electrode 3a. One or more deployments are configured.
[0008]
The operation portion 2 forms a rubber elastic member in a dome shape to constitute a reversing portion 2b. The reversing portion 2b holds the contact 2d and the electrode 3a at a predetermined interval without being pressed, and is in a pressed state. thereby acts to dissociate the contacts 2 d from the electrode 3a, and a click reversing force and the restoring force urges the structure for generating the click action characteristics due to rapid deformation, transmitting a pressing force above the inversion portion 2b The block-shaped head portion 2a is integrally formed.
[0009]
A through hole 1a is provided in the substantially central portion of the cover 1 constituting the switch body, and the head 2a of the operation unit 2 that moves up and down is reduced as much as possible by the through hole 1a, thereby enabling smooth vertical movement. The inclined surface 1b is annularly arranged downward from the through hole 1a to form a space corresponding to the deformation of the reversing portion 2b, and a boss 1f and a projection 1g are arranged on the bottom surface of the cover 1. When combined with the base 6, the upper and lower backlash of the printed circuit board 3 disposed in the base 6 is suppressed, and the stepped portion 2c disposed below the reversing portion 2b acts as positioning on the printed circuit board.
Further, a tongue lower portion 1d that is planted and a square hole 1e that is drilled in the tongue lower portion 1d are formed below the cover 1.
[0010]
After the printed circuit board 3 having the terminals 4 and the light emitting elements 5 attached to the base 6 is assembled, the operation unit 2 constituting the contact mechanism unit is placed on the printed circuit board 3, and the head 2 a is placed in the through hole 1 a of the cover 1. The switch of the present invention is completed by hooking the square hole 1e provided in the lower tongue portion 1d of the cover 1 to the convex portion 6a of the base 6 while being inserted into the cover 1. FIG. As shown in FIG. 4, when the operation unit 2 is formed of a translucent member, light emitted from the light emitting element 5 disposed in the reversing unit 2b around the contact 2d is emitted from the reversing unit 2b. The light reflected from the inclined surface 1b that is annularly disposed on the inner surface of the cover 1 is formed at a substantially central portion where the light of the light emitting element 5 is originally shielded to form a shadow, located above the contact 2d. The light is condensed on the head 2a of the operation unit 2 and the operation unit 2 is uniformly illuminated. Can do.
[0011]
Furthermore, since the light emitting element 5 is disposed in the surrounding reversing portion 2b below the contact 2d , it is possible to cope with the reduction in thickness and size of the illuminated switch, and light is projected from the light emitting element 5. Thus, the operation unit 2 constitutes an illumination surface, and accurate information transmission to the system operator becomes possible.
[0012]
The light emitting element 5 as a light source for uniform illumination increases the brightness and reduces the total power consumption by the LED type, provides a switch with high maintainability, changes the material hardness of the elastic member, and inverts parts with different click characteristics 2b can be formed to improve the operational feel and meet various needs.
[0013]
Moreover, although the example which mainly illuminates the operation part 2 was described in the present Example, the switch which has the illumination form which is not before is provided by forming the cover 1 which comprises a switch main body with a translucent member. I can do it. (Not shown)
In particular, since the upper surface of the cover 1 is a curved surface 1c, the light projected from the light emitting element 5 is refracted by hitting the inner inclined surface 1b and radiated from the switch body by hitting the curved surface 1c. Visibility to recognize accurately can be secured.
[0014]
FIG. 5 is a main part perspective view showing an example in which two light emitting elements 5 are arranged on the back surface of the printed circuit board 3 located below the contact mechanism. Two one Ri current use or built-in resistor switch limited by the fact that the chip resistance of the light emitting element 5, by deploying two light emitting elements 5 for each color by changing the circuit pattern 2 color illumination Although it is possible to construct a type switch, the present invention does not exclude such an application.
Further, there are various methods for fixing the light emitting element 5, such as soldering, heat-resistant conductive adhesive, spot welding, and mechanical joining.
[0015]
【The invention's effect】
As described above in detail, according to the present invention, the following effects can be obtained.
(1) A contact mechanism is disposed in a switch body including a base and a cover projecting a plurality of terminals, and a head projecting above the switch body from a through hole formed in a substantially central portion of the cover ; In the switch comprising an operation part integrally formed with a reversing part formed in an approximately dome shape with an elastic member below the head, the operation part is formed of a translucent member, and constitutes the contact mechanism part A contact is provided at a substantially central portion in the reversing portion, one or a plurality of light emitting elements are provided in the reversing portion around the lower portion of the contact, and an inclined surface is formed in an annular shape downward from the through hole of the cover. the so light from the light-emitting elements are configured to allow the head uniform illumination located above the front Symbol reversing portion is reflected by the inclined surface leakage to the switch body, an operation portion having an illumination surface Uniform illumination to improve visibility Is, it is possible to reliably recognize the working state of the apparatus employing the illumination switch.
(2) A contact mechanism is disposed in a switch body composed of a base and a cover protruding a plurality of terminals, and a head protruding above the switch body from a through hole formed in a substantially central portion of the cover ; In the switch comprising an operation part integrally formed with a reversing part formed in an approximately dome shape with an elastic member below the head, the operation part is formed of a translucent member, and constitutes the contact mechanism part A contact is provided at a substantially central portion in the reversing portion, one or a plurality of light emitting elements are provided in the reversing portion around the lower portion of the contact, and an inclined surface is formed in an annular shape downward from the through hole of the cover. the so light from the light-emitting elements are configured to allow the head uniform illumination located above the front Symbol reversing portion is reflected by the inclined surface leakage to the switch body, a light emitting element contact mechanism of the inversion portion of the periphery of the lower And setting, by the arrangement space of the light emitting elements to a minimum, it is possible to contribute to space saving of the apparatus.
(3) The cover in which the cover constituting the switch body is formed of a translucent member, and the light of the light emitting element disposed in the reversing portion around the lower part of the contact mechanism unit is formed of the translucent member. Since it is set as the structure which illuminates, the illumination type switch which has the illumination form which is not in the past can be provided.
(4) Since any one of a plurality of light emitting elements arranged in the reversing part around the contact point constituting the contact mechanism part is a current limiting element , the method of controlling the light emitter can be freely controlled with one type of switch. Can be selected.
(5) The operation portion is composed of a reversing portion formed in a substantially dome shape and a head portion formed integrally with the reversing portion, and a step portion is formed below the reversing portion to form a bottom surface portion of the base. The elastic members are securely fixed by the bosses and protrusions planted on the bottom of the cover, and the through-hole provided in the approximate center of the cover reduces the glitch when pressed down, resulting in a very good operation feeling. Can be maintained.
[Brief description of the drawings]
FIG. 1 is a diagonal sectional view showing an embodiment of a switch of the present invention.
FIG. 2 is a central sectional view showing an embodiment of the switch of the present invention.
FIG. 3 is an exploded perspective view showing an embodiment of the switch of the present invention.
FIG. 4 is a cross-sectional view of a main part showing an illumination part of the switch of the present invention.
FIG. 5 is a perspective view of a main part showing a method for arranging light emitting elements of the switch of the present invention.
FIG. 6 is a cross-sectional view illustrating an example of a conventional push button switch.
FIG. 7 is a cross-sectional view showing another example of a conventional push button switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 9 Cover 1a Through-hole 1b Inclined surface 1c Curved surface 1d Lower tongue 1e Square hole 1f Boss 1g Protrusion 2, 7, 14 Operation part 2a Head 2b Reversing part 2c Step part 2d Contact 3 Printed circuit board 3a Electrode 3b Terminal hole 3c Throw Light hole 4, 12, 18 Terminal 4a Gutter 5, 13, 20 Light emitting element 6, 11, 17 Base 6a Convex 6b Bottom 6c Hole 6d Concave 8, 15 Housing 10, 16 Movable contact piece 19 Lens

Claims (3)

A contact mechanism portion is disposed in a switch body composed of a base and a cover projecting a plurality of terminals, a head projecting above the switch body from a through hole formed in a substantially central portion of the cover, and the head In the switch composed of an operation part integrally formed with an inversion part formed in an approximately dome shape by an elastic member below the operation part, the operation part is formed of a translucent member, and the inside of the inversion part constituting the contact mechanism part A contact is provided in a substantially central part, one or a plurality of light emitting elements are provided in the reversing part around the lower part of the contact, an inclined surface is formed in an annular shape downward from the through hole of the cover, and the switch switch, characterized in that the light from the light emitting element that leaked was the head uniformly illuminated capable configuration located above the front Symbol reversing portion is reflected by the inclined surface into the body. A cover constituting the switch body is formed of a translucent member, and light of a light emitting element disposed in the reversing portion around the contact mechanism portion illuminates the cover formed of the translucent member. The switch according to claim 1. Either a switch according to claim 1 and claim 2, wherein the current limiting element of the light-emitting element in which a plurality deployed in the inverted portion of the periphery of the lower contacts constituting the contact mechanism.

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