JPS5918596Y2 - lighted switch - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an illuminated switch that includes a light emitting diode as a part of the operating section.

A tilting body having an operation knob is pivotally supported on a switch body equipped with a switch mechanism, and by tilting the tilting body, the switch mechanism is opened and closed.A light emitting diode is provided on the operation knob to open and close the switch mechanism. An illuminated switch that blinks in response to the

Electrical connection to the light emitting diode in this illuminated switch is achieved by housing a conductive coil spring in the tilting body, inserting the terminal of the light emitting diode into one end of this coil spring and press-fitting it to the inner circumference; The end is press-fitted to a fixed terminal.

However, since the inner diameter of the coil spring is small, it is very troublesome to insert the terminal of the light emitting diode.
Increasing the inner diameter of the coil spring makes it easier to insert the terminal, but the contact pressure to the inner circumference decreases, which may result in insufficient contact.

This idea was devised by focusing on the above-mentioned circumstances, and its purpose is to insert a contact piece into one end of a conductive coil spring, and insert the terminal of a light emitting diode into this contact piece. In this way, the present invention aims to provide an illuminated switch that facilitates assembly work and ensures reliable electrical connection of light emitting diodes.

Hereinafter, this invention will be explained based on one embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a square box-shaped case body made of an insulating material such as synthetic resin, and an opening 2 is provided in the upper part of the case body.

Inside the case body 1, a pair of switch chambers 4, 4 are provided by partition walls 3, 3.

These switch chambers 4.4 are provided with fixed contact pieces 5b and 5C on both sides of the support piece 5a, and the support piece 5a is tiltable and alternately has fixed contact pieces 5b and 5C at both ends.
Movable contact pieces 6, 6 that move toward and away from 5C are supported, and constitute a switch mechanism 7.

Furthermore, a pair of fixed terminals 8 are provided between the switch chambers 4 and 4.
, 8 are provided protrudingly, and recesses 9, 9 are provided at the upper ends of these.
is provided.

Further, support plates 10.10 are fixed to both side walls of the case body 1, and support holes 11.11 facing each other are bored in a part of these support plates 10.10.

Further, a tilting body 12 is housed inside the case body 1 so as to close the opening 2.
The support shaft 13.13 protruding from both sides of the support hole 11.1
1, it is supported so as to be tiltable.

Further, at the bottom of this tilting body 12, the switch mechanism 7,
Fitting holes 14, 14 facing 7 are provided.

Actuators 16.16, which can be protruded and retracted, are housed in these fitting holes 14, 14 via springs 15, and these actuators 16.16 are moved by the movable contact pieces 6, 16 as the tilting body 12 is tilted. It is designed to slide on the top.

Furthermore, an operating section 17 is provided on the upper part of the tilting body 12 to operate the tilting body 12 by pinching with fingers or the like.

This operation part 17 is formed into a cylindrical rod shape by a holder 18 and a sleeve 19 fitted thereto, and the lower end of this holder 18 is inserted into a through hole 20a bored in the tilting body 12. The lower end of the sleeve 19 is screwed into a screw hole 20b of the tilting body 12.

Furthermore, a light emitting diode 21 is mounted on the upper end of the holder 18.
is installed.

Furthermore, the holder 18 is divided into two parts in the radial direction, and one of the joint parts is provided with a groove 22, and the other is provided with a protrusion 23 that is inserted into the middle part of the groove 22 in the width direction. .

Then, there are two guide holes 2 on both sides sandwiching this protrusion 23.
4.24 are formed, which extend over the entire length of the holder 18, and step portions 25, 25 are formed at the upper end.

Conductive coil springs 26, 26 are inserted into both guide holes 24, 24.

A contact piece 27.27, which will be described later, is fitted into the upper end of this coil spring 26.26, and small diameter portions 28a, 28a of a conductive member 28.28, which is slidable in the guide hole 24.24, is attached to the lower end. is inserted.

These conductive members 28, 28 are connected to the fixed terminal 8,
It is pressed into the recesses 9, 9 of 8.

The contact piece 27.27 is formed of a conductive spring material into a thin cylindrical shape, and has four blades 27 by inserting a deep groove 27a in a cross shape from one longitudinal end of the contact piece 27.27. b... is formed.

By squeezing the tips of these blades 27b, they are shaped into a nearly conical shape, and the large diameter side of the blades 27b is shaped like a circular funnel and has a diameter slightly larger than the inner diameter of the coil spring 26. has been done.

The contact pieces 27.27 thus formed are each fitted into the upper end of the coil spring 26.26, and the terminal 21a of the light emitting diode 21 is attached to the contact pieces 27.27.
, 21a are inserted.

In this case, the upper edge of the contact piece 27.27 is connected to the guide hole 24.2.
Step 25 of 4. ．． Since the blade 27b is in pressure contact with the coil spring 25, the restoring force of the coil springs 26, 26 causes the blade 27b...
The blades 27b... are strongly squeezed, and the terminals 21a, 21a inserted inside are pressed into contact with each other.

Therefore, the coil spring 26 is pressed into contact with the terminal 21a of the light emitting diode 21 via the contact piece 27, and is electrically connected.

Thus, the tilting body 12 is tilted about the support shaft 13.13 when the operating portion 17 is picked up with fingers or the like and operated in the direction of the arrow.

Therefore, the actuator 16 provided on this tilting body 12.
16 slides on the movable contact pieces 6, 6 while elastically moving up and down within the fitting holes 14, 14.

Therefore, the movable contact pieces 6, 6 tilt around the support piece 5a, and both ends thereof alternately approach and separate from the fixed contact pieces 5b, 5C, thereby opening and closing the switch mechanism 7.

At this time, the terminals 21a, 21a of the light emitting diode 21 attached to the tip of the operating section 17 are pressed into contact with the coil springs 26, 26 via the contact pieces 27, 27, and the coil springs 26, 26 are in pressure contact with the conductive member 28, 26. Fixed terminal 8.
8, but the connection part is located on the support axis line a of the tilting body 12, so when the tilting body 12 tilts, the connection part between the conductive member 28, 28 and the fixed terminals 8, 8 becomes the fulcrum. Therefore, the two will not slide.

In the above embodiment, the contact pieces 27, 27 are made of a conductive spring material, but they do not necessarily need to be made of a spring material, and may be made of a relatively thin conductive material.

Further, although the description has been made regarding a two-pole light emitting diode, in the case of a three-pole light emitting diode, three coil springs may be embedded in the operating section.

As explained above, in this invention, a contact piece is inserted into one end of a conductive coil spring, and a light emitting diode terminal is inserted into this contact piece, so that when the light emitting diode terminal is inserted, the contact piece is inserted. It serves as an insertion guide and can facilitate the insertion work.

Furthermore, since the contact piece has a cylindrical shape and has multiple blades at one end, these blades press against the terminal of the light emitting diode due to the restoring force of the coil spring, so the contact is reliable, but there is a risk of contact failure. It is possible to provide a highly reliable illuminated switch without any problems.

[Brief explanation of drawings]

The drawings show one embodiment of this invention; FIG. 1 is a longitudinal sectional front view of the switch, FIG. 2 is a longitudinal sectional side view taken along line III in FIG. FIG. 4 is an enlarged cross-sectional view taken along the line IV--IV in FIG. 2, and FIG. 5 is an enlarged perspective view of main parts.

Claims (1)

[Scope of utility model registration request] A switch body having a fixed terminal, a tilting body that is pivotally supported by the switch body and opens and closes the switch mechanism as it tilts, an operating section provided on the tilting body and partially equipped with a light emitting diode, and this operating section. A conductive coil spring is embedded therein, into which a contact piece into which the terminal of the light emitting diode is inserted is inserted into one end, and the other end is press-contacted to the fixed terminal to electrically connect the contact piece. An illuminated switch characterized in that it is formed into a cylindrical shape made of a conductive spring material, and has a plurality of blades at one end thereof which are squeezed inward by the restoring force of the coil spring and tighten the terminals of the light emitting diode.