JPS5911380Y2 - illuminated push button switch - Google Patents

Description

[Detailed description of the invention] The present invention relates to an illuminated push button switch that is equipped with an illumination lamp that lights up to indicate the switch position and when the switch is turned on and off, and in which the illumination lamp can be replaced by attaching and detaching the front push button part. It is.

In this type of device, after the push button section is removed and the illumination lamp is replaced, the push button section is inserted by being pushed in.

At this time, the force required to connect the push button to the contact operation plate was greater than the force required to operate the contact by pushing the contact operation plate in the conventional model, so the contact operated. The load has the disadvantage of causing malfunction, and in order to compensate for this, it is necessary to reinstall the removed push button.
There was the complication of having to disconnect the load from this switch or turn off the power in advance.

The present invention has been proposed in view of the above points, and the contact part of this switch does not operate when the push button part is installed, so there is no need to disconnect the load in advance when replacing the internal illumination lamp, etc. It is an object of the present invention to provide an illuminated push button switch that does not cause malfunction.

The present invention will be described in detail below based on the illustrated embodiment. The push button part 1 is formed of a transparent or semi-transparent plate, and has a pair of opposing connecting legs 2.
, 2 are attached to its back.

The opposing surfaces of the ends of the substantially parallel connecting legs 2, 2 are tapered portions 4, and the distance between the connecting legs 2, 2 becomes wider toward the tips, and following this tapered portion 4, Each connecting leg 2
An engagement hole 3 is provided at the tip of each of the two.

The connecting leg 2 shaped in this way has sufficient flexibility, and even if a force is applied to the tapered surface 4 in the longitudinal direction of the connecting leg 2, a light force will prevent the contact from clogging. It is designed so that it can open outwards with less force than the required force (op).

Reference numeral 5 designates a contact operating plate whose both ends engage with the engagement 7L3, 3 of both connecting legs 2, 2, and the downward movement of the contact operating plate 5 operates a contact portion 6 such as a limit switch via a driver 7. do.

8 is a return spring.

The illumination lamp 9 is disposed between both connecting legs 2, 2, and is connected to a contact spring 10 and a pair of contact plates 11.
．． It is in contact with 11.

In this device, when replacing the illumination lamp 9, etc., when the push button portion 1 is pulled, the retaining hole 3 and the contact operation plate 5 are easily disengaged from each other due to the flexibility of the connecting leg 2, and the push button portion 1 is pulled out. Can be removed.

In order to reinstall the removed push button section 1, it is inserted into the main body through the connecting leg 2.

When the tips of both connecting legs 2 hit both ends of the contact operating plate 5, the connecting legs 2 expand outward without pushing down the contact operating plate 5 to the operating position due to the tapered portion 4 and flexibility of the connecting legs 2, and expand into the engagement hole. 3 are engaged with both ends of the contact operation plate 5.

Therefore, the push button section 1 can be attached without operating the contact section 6 as described above.

As described above, in the present invention, even if the push button section is removed and reattached when replacing an illumination lamp, etc., the contact section will not operate due to the force of pushing the push button section for this attachment. There is no need to disconnect the load.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of one embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the same, Fig. 3 is a front view of the push button part and connecting leg of the above, and Fig. 4
The figure is a front view showing the operation when the push button part is attached,
1 is a push button part, 2 is a connecting leg, 3 is a retaining hole, 4 is a tapered part, 5 is a contact operation plate, and 6 is a contact part.

Claims (1)

[Scope of utility model registration request] The illumination lamp includes an illumination lamp located between the push button part and the contact part and between the push button part and the contact part, and the tips of a pair of substantially parallel connecting legs extending from the push button part are connected to the contact operation plate in the contact part. The above-mentioned pair of connecting legs have sufficient deflection characteristics, and have retaining holes on opposing surfaces of the tip portions that engage both ends of the contact operation plate. An illuminated push button switch has a tapered portion that increases the distance between the facing parts, and the force required to engage the connecting leg and the contact operation plate is smaller than the force required to operate the contact part.