JPH0544973Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention relates to a push button switch used, for example, to control energization of various electronic devices such as audio equipment.

(b) Conventional technology Conventionally, this type of push button switch was
For example, devices equipped with lighting elements such as LEDs are known.

That is, by holding the LED in a lamp holder, housing the lamp holder in a lamp case, and attaching a cover to the lamp case via a light diffusion plate, an operation unit that is linked to the pressing operation is formed. On the other hand, the operating unit and the plunger are engaged with each other, and the switch mechanism is turned on and off via the plunger by pressing down on the operating unit, and at the same time the LED is emitted.

However, the above-mentioned LED has a polarity, and there is a high possibility that it is set in the opposite direction, and if the LED is set in the opposite direction, it has a problem that the desired light emitting effect cannot be obtained.

(c) Problems to be solved by the invention This invention can prevent the lamp holder, lamp case, and plunger from being inserted in the wrong direction, and can accurately orient polarized lighting elements such as LEDs in a predetermined direction. The object of the present invention is to provide a push-button switch, in which the operation unit can be easily removed for replacing the above-mentioned lighting element, and the switch can be made smaller as a whole by connecting with a unique plunger. .

(d) Means for Solving the Problems In this invention, the operating unit includes a lamp holder that holds a polarized lighting element, a lamp case that houses the lamp holder, and a projection on the outer peripheral surface of the lamp holder. a recess that engages with the protrusion on the inner surface of the lamp case, a protruding shaft is formed on one side of the outer peripheral surface of the lamp case, and the upper end of the plunger engages with and disengages from the protruding shaft; The push button switch is characterized by having an angular locking portion that is open at the top.

(e) Effects of the invention According to this invention, after attaching the protrusion on the outer circumferential surface of the lamp holder and the recess on the inner surface of the lamp case so that they correspond to each other, the end of the plunger is attached to the protruding shaft on the outer surface of the lamp case. When the locking portions are engaged, a polarized lighting element such as an LED is set in a predetermined direction, which has the effect of preventing it from being inserted in the opposite direction as in the conventional case.

Further, since the plunger of the operating unit is engaged with a protruding shaft and a square locking portion, the operating unit can be easily removed from the plunger by pulling the operating unit outward.

In addition, the plunger is located on one side of the outside of the lamp case of the operating unit and is placed offset from the center, so by placing the switch mechanism in a position opposite to this plunger, the entire switch can be made smaller. Can be done.

(F) Embodiment of the invention An embodiment of the invention will be described below in detail based on the drawings.

The drawings show a push button switch, and in Figures 1 and 2, 1 is a housing made of synthetic resin;
This housing 1 has a lower cylindrical portion 2 and an upper rectangular cylindrical portion 3 integrally formed.

4 is a synthetic resin lamp case, this case 4
An LED 6 held in a holder 5 is attached to the lower part of the LED 6, and a cover 8 is fitted to the upper part with a light diffusing plate 7 interposed therebetween.

An operating unit 9 in which the above-mentioned elements 4 to 8 are integrated is slidably attached to the upper opening of the above-mentioned housing 1.

Here, as shown in FIG. 3, a single convex column-shaped projection 5a is formed on the outer peripheral surface of the cylindrical lamp holder 5 that holds the LED 6 therein.

In addition, on the inner surface of the lamp storage part 4a of the lamp case 4 that stores the lamp holder 5 therein,
As shown in FIG. 4, a single groove-shaped recess 4b is formed corresponding to the aforementioned projection 5a.

Further, as shown in FIG. 5, a portion of the lower outer surface of the lamp case 4 is recessed to form a recess 4c, and a single protruding shaft 29 facing outward is formed in the recess 4c. is integrally formed with the protruding shaft 29, and an angular locking portion 28 at the upper end of the plunger 21, which will be described later.
is engaged.

Furthermore, a claw-like engaging portion 4d that engages with the bottom of the lamp holder 5 is integrally formed on the lower inner surface of the lamp case 4 mentioned above.

On the other hand, inside the cylindrical portion 2 of the housing 1 described above, a first base 11 with an integrated terminal 10 and a second base 12 with an integrated terminal 13 are attached.

On one first base 11, a partition wall 14 is provided which is located approximately in the center of the cylindrical portion 2 and partitions the switch mechanism 26. On this partition wall 14, an operating piece 24, which will be described later, is moved toward the plunger 21 side. A through hole 15 is formed for leading out, and this through hole 1
5, a bar-shaped locking portion 16 for locking the aforementioned operation piece 24 is integrally formed of synthetic resin.

The aforementioned partition wall 14 separates the inside of the cylindrical portion 2 of the housing 1 from the plunger chamber 17 and the switch mechanism chamber 1.
One plunger chamber 17 is provided with a plunger 21 with an alternate cam 20 pivotally attached to a protruding shaft 19, and the other switch mechanism chamber 18 is provided with a contact 22 at the free end. A switch mechanism 26 consisting of a movable piece 23, a substantially W-shaped operating piece 24, and a tension spring 25 is provided.

One end 24a of the aforementioned approximately W-shaped operating piece 24 is locked to the inverted L-shaped terminal 13, and its middle portion is led out into the plunger chamber 17 through the aforementioned through hole 15, and this leading end is used for operation. The other end 24b of the piece 24
A coil spring 27 is stretched between the spring seat 21a and the above-mentioned spring seat 21a on the upper part of the plunger 21.

Furthermore, the locking portion 28 at the upper end of the plunger 21 is engaged with the protruding shaft 29 at the bottom of the runner case 4, so that the plunger 21 is linked to the pressing operation of the operating unit 9.

In addition, in the figure, 30 and 31 are terminals for LED, 3
Reference numeral 2 denotes a mounting screw that is screwed into a threaded portion on the outer periphery of the cylindrical portion 2 described above.

The illustrated embodiment is configured as described above,
The action will be explained below.

Now, when you push down the operating unit 9, the protruding shaft 2
9 and the locking angle 28, the plunger 21
moves downward in conjunction with each other, and the downward force of the plunger 21 is transmitted to the operating piece 24 via the coil spring 27, so that the operating piece 24 swings counterclockwise in FIG. At the same time, the alternate cam 20 rotates half a rotation to maintain the downward movement of the plunger 21.

As a result, the lower movable piece 23 held by the tension spring 25 is tilted, and the contact 22 at its lower end comes into pressure contact with the opposing terminal 10, so the switch is turned from off to on, and the LED 6 emits light.
This state is maintained by the alternate cam 20.

Under these conditions, when the operating unit 9 is pressed down again, the switch is turned from on to off, resulting in the state shown in FIG.

By the way, when assembling the above-mentioned push button switch, the protrusion 5 on the outer peripheral surface of the lamp holder 5
After combining both 4 and 5 so that a and the recess 4b on the inner surface of the lamp case 4 correspond to each other, the locking portion 28 at the upper end of the plunger 21 is engaged with the protruding shaft 29 on the outer surface of the lamp case. Then, the combination direction of each element 5 and 4 and each element 4 and 21 is aligned with the above-mentioned protrusion 5a, recess 4b and protruding shaft 29.
Since this is restricted by the locking portion 28, the polarized LED 6 is reliably inserted in a predetermined direction, and it is possible to prevent the polarized LED 6 from being inserted in the opposite direction as in the conventional case.

Further, when removing the operating unit 9, by pulling it, the protruding shaft 29 of the lamp case 4 is disengaged from the locking portion 28 of the plunger 21, and the lamp case 4 can be removed and the LED 6 can be replaced. After replacement, the operating unit 9 can be set by aligning the protruding shaft 29 of the lamp case 4 of the operating unit 9 with the locking portion 28 of the plunger 21 and pushing it in.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a sectional view of a push button switch, Fig. 2 is an exploded perspective view of the switch, Fig. 3 is a plan view of a lamp holder fitted with an LED, and Fig. 4 is a cross-sectional view of the push button switch. 5 is a plan view of the lamp case, and FIG. 5 is a perspective view showing a state of engagement between the lamp case and one end of the plunger. 4...Lamp case, 4b...Recess, 5...Lamp holder, 5a...Protrusion, 6...Lighting element, 2
1...Plunger, 28...Locking portion, 29...Protruding shaft.

Claims (1)

[Claims for Utility Model Registration] An operating unit incorporating a polarized lighting element such as an LED is held in the upper part of a housing so that it can be pushed down, and a switch mechanism is housed in the lower part of the housing, so that the operating unit can be pushed down. A push-button switch that operates a switch mechanism via a plunger when operated, wherein the operation unit includes a lamp holder that holds a lighting element, and a lamp case that houses the lamp holder, and an outer periphery of the lamp holder. A protrusion is formed on the surface, a recess is formed on the inner surface of the lamp case to engage with the protrusion, a protruding shaft is formed on one side of the outer peripheral surface of the lamp case, and the protruding shaft and the protruding shaft are formed on the upper end of the plunger. A push button switch with a square locking part that opens at the top when engaged and released.