JPH046101Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a push button switch in which a display unit is provided on the movable body of the switch.

[Prior Art] In recent years, a display unit with a light emitting diode etc. attached to the movable body of a push button switch has been installed.
There are some devices in which the open/closed state of a push button switch can be displayed by lighting a light emitting diode or the like.

FIGS. 4a and 4b each show a conventional push button switch with a display unit.

What is shown in FIG. 4a is a push button device with a light source described in Japanese Patent Application Laid-Open No. 49-112177, in which a key push button 74 is connected to a housing 73 by means of a small-diameter inner coil spring 71 and a large-diameter outer coil spring 72. is slidable, and the key tip 74 is biased upward. The light source 75 is on the keypad 74.
is built-in, and these coil springs 71 and 72 are used as means for supplying current to the light source 75.

The one shown in FIG. 4b is an illuminated push button switch described in Japanese Patent Application Laid-Open No. 57-67231, in which a return spring 76 which also serves as a reed is used to connect the housing to the
7, the button bodies 78a and 78b are slidable,
Moreover, the button bodies 78a and 78b are urged upward. Lamps 7 are provided on the button bodies 78a and 78b.
9 is held, and these lead return springs 76 are used as means for supplying current to the lamp 79.

Each of the pushbutton switches is electrically operated within the main body by a pressing force from above, and this switch operation is used to turn on and off the light source 75 and lamp 79, and the like.

[Problems to be solved by the invention] However, in the above-mentioned conventional push button switches with display units, manufacturing and
and maintenance could not be easily performed.

The coil springs 71 and 72 shown in FIG. The housing 73 and the keypad 74 must be fitted together. Furthermore, during this work, the coil springs 71 and 72 are both hidden inside, making it impossible to confirm their condition.

On the other hand, when disassembling this switch for maintenance, the coil spring 71 and
72 while removing these housings 7.
3, and the key top 74 had to be disassembled.

Further, both ends of the coil springs 71 and 72 are configured to extend so as to directly contact the vicinity of the external lead terminal and the light source 75, respectively, so the light source 75 and the coil springs 71 and 72 must be firmly fixed. Needless to say, this fixing operation makes manufacturing and maintenance difficult.

On the other hand, the reed return spring 76 shown in FIG. It is hidden inside and its status cannot be checked. Therefore, there is a risk that the other lead return springs 76 may come into contact with each other.

Furthermore, to manufacture the switch, the housing 77
The fitting work of the housing 77 and the button body 78 must be carried out while interposing the return spring 76 which also serves as a lead.

In addition, in any of the above push button switches, the slider etc. that make up the switch is prone to poor contact due to aging, but since it is not possible to disassemble only this switch part after manufacture, the entire switch must be replaced. It didn't happen.

The present invention was developed to solve the above problems, and is used for supplying power to a display and returning a button in a push button switch that is provided with a continuous power supply means in the vertical direction inside. To provide a push button switch in which the process of assembling a conduction coil spring is simple and easy, the push button switch is easy to assemble, the switch parts are easy to assemble and replace, and the entire switch is easy to assemble and maintain. It is intended to.

[Means for Solving the Problem] In order to achieve the above object, the push button switch of the present invention has a movable body 2 attached to the switch body 1 to open and close the switch by pushing the button.
A display unit 4 for displaying the open/closed state of the switch is provided in a part of the switch, and power is supplied to the display unit 4 via conductive coil springs 6a and 6b interposed between the display unit and the switch body. In the push button switch to be supplied, an adapter fitting groove 24 is provided in the outer wall of the movable body 2 in a direction perpendicular to the direction of the pushing operation, and is provided to penetrate in the direction of the pushing operation, and the adapter fitting groove 24 is provided to penetrate in the direction of the pushing operation. a spring support hole 51 in which at least one end of the conductive coil spring 6b is locked, and an adapter that fits into the adapter fitting groove 24 from a direction perpendicular to the pushing direction with one end of the conductive coil spring 6b locked. an adapter 5 having a fitting arm 52; a switch contact 8 provided with a contact portion for performing a predetermined switch change and molded into a substantially flat plate shape; Switch contact fitting groove 11 into which the child 8 is fitted
a, and a switch contact 25 that is provided on the side of the conductor 2 and switches the switch by sliding the switch contact 8 portion.

[Function] The adapter 5 is attached to the outer wall of the movable body 2 with one end of the conductive coil spring 6b positioned. At this time, since the mounting direction is perpendicular to the push direction of the switch, only the assembly of the conductive coil spring for return between these movable bodies and the switch body is performed at the other end of the conductive coil spring 6b. This can be done while visually confirming the position of the object.

Further, the switch contact 8 is assembled by fitting into the switch contact fitting groove 11a of the switch body 1, and the switch contact 25 is moved by the pushing operation of the conductive body 2, and the switch contact 25 is moved between the switch contact 8 and the switch contact 8. A predetermined switch is made by contact.

In this way, the assembly process is subdivided, making it possible to simplify the overall assembly work and improve workability.

[Examples] The present invention will be specifically described below based on illustrated examples.

FIG. 1 is an exploded perspective view of a push button switch according to the present invention, FIG. 2 is an enlarged view of a conducting coil spring, and FIGS. 3a and 3b are sectional views of the push button switch before and after it is pressed.

As shown in the figure, the push button switch according to the present invention includes a switch body 1, a movable body 2, a cover 3, a display unit 4, an adapter 5, conductive coil springs 6a and 6b, a lock pin plate 7,
It consists of a switch contact 8.

In the figure, the switch main body 1 is made of a rectangular cylinder with one end closed, and has hook-shaped flanges 11 protruding from two opposing inner surfaces for fitting the switch contacts 8. A cover fitting protrusion 12 for fitting the cover 3 is formed on the outer surface, and a positive terminal 13 for supplying power to the display unit 4 is attached to the bottom surface. The protrusion of the hook-shaped flange 11 forms a switch contact fitting groove 11a into which the switch contact 8 is fitted, and a guide groove 11b into which the guiding flange 21 attached to the movable body 2 is fitted.
is formed.

The movable body 2 has a guide flange 21 attached to the lower side surface of a substantially rectangular parallelepiped, passes through an insertion hole 22 for inserting a positive conduction coil spring 6a along the axis of the rectangular parallelepiped, and has a guide flange 21 attached to the lower side surface of the rectangular parallelepiped, and a guide flange 21 is inserted through the insertion hole 22 for inserting the positive conducting coil spring 6a along the axis of the rectangular parallelepiped. A display unit fitting groove 23 and an adapter fitting groove 24 are formed, and a switch contact 25 is attached.

The inner diameter of the insertion hole 22 becomes smaller from the middle of the hole, so that when the conductive coil spring 6a is inserted, the head of the spring partially protrudes from the insertion hole 22.

The cover 3 is made of a flat plate with a fitting hole 31 for fitting the movable body 2 therein, and has a U-shaped protrusion on its side surface to form a cover fitting groove 31a, and also has a U-shaped protrusion for supplying power to the display unit 4. A pin terminal 32 on the negative side for supply is provided upright.

The display unit 4 includes a light emitting diode 4
The printed circuit board with the first component attached is enclosed in a housing, and a display unit fitting protrusion 42 for fitting into the movable body 2 is protruded from the lower surface of the housing, and positive and negative terminal contacts 42a, 42b are provided.
was formed.

The adapter 5 also has two spring support holes 5.
1 is formed through the movable body 2, and adapter fitting arms 52 for fitting into the movable body 2 are provided protruding from both sides.

The inner diameter of this spring support hole becomes smaller from the middle of the hole, similar to the insertion hole 22 of the movable body 2.
When the conductive coil spring 6b is inserted, the head of the spring partially protrudes from the adapter.

As shown in Fig. 2, the conduction coil springs 6a and 6b include one negative conduction coil spring 6a and two positive conduction coil springs 6b. It consists of an integrally formed first spring part 61 which is wound around a coil and a second spring part 62 which is a loosely wound coil with a large diameter.

The reason why three conductive coil springs are used here is to enable control such as lighting up all the light emitting diodes 41 or switching from yellow to red light emitting diodes. The switch main body 1, movable body 2, cover 3, display unit 4, adapter 5, and conductive coil springs 6a and 6b thus constructed are assembled in the following manner.

First, the switch contact 8 with the terminal pin 81 attached thereto is fitted into the switch contact fitting groove 11a formed in the slide body 1, and the lock pin plate 7 is fitted into the guide groove 11b.

This switch contactor 8 is molded into a flat plate shape using a molding resin except for the contact portion.

Then, the negative conduction coil spring 6a is inserted into the insertion hole 22 of the movable body 2, and the guide flange 21 of the movable body 2 is inserted into the guide groove 1 of the switch body 1.
Insert the movable body 2 into the switch body 1 along the line b.

After fitting, cover cover 3 from above, and
The cover fitting groove 31a formed in the switch body 1 is fitted into the cover fitting protrusion 12 formed in the switch body 1. As a result, the movable body 2 is biased by the conduction coil spring 6a, is prevented from coming off by the cover 3, and can be moved freely. Furthermore, the action of the lock pin plate 7 causes the movable body 2 to be locked in the pressed state.

After that, the spring support hole 51 of the adapter 5
Insert the positive coil spring 6b for conduction, and while making sure that the tip of the coil spring 6b is in contact with the positive pin terminal 32 erected on the cover 4, the arm 52 for fitting the adapter is drilled into the movable body 2. The adapter fitting groove 24 is fitted into the adapter fitting groove 24.

At this time, one end (upper end) of the conductive coil spring 6b is positioned and locked by the spring support hole 51. Furthermore, this fitting direction is perpendicular to the direction in which the switch is pushed, and only if the other end (lower end) of the conductive coil spring 6b is positioned above the pin terminal 32. This can be done while checking the position, and can be done with certainty. Therefore, as in this embodiment, the conductive coil spring 6b
Even when a plurality of conductive coil springs 6b are arranged in parallel, the plurality of conducting coil springs 6b can be assembled without coming into contact with each other.

Further, a locking claw 52a is formed at the tip of the adapter fitting arm 52, and the end of the adapter fitting groove 24 is deep, so that the fitted state can be maintained. I can do it.

Finally, the display unit 4 is fitted into the movable body 2 to complete the display unit. This brings one end of the conductive coil spring 6a into contact with the contact terminal 42a, and one end of the conductive coil spring 6b contacts the contact terminal 42a.
terminal 13 to the display unit 4 in contact with b.
32 to these conductive coil springs 6a, 6
Power can be supplied via b.

In this way, the push button switch is subdivided into simple assembly steps, making manufacturing and maintenance easier.

Moreover, even after manufacture, it can be disassembled by reversing the assembly operation described above, and partial components can be easily maintained and replaced. In particular, the movable body 2 provided with the switch contacts 25 constituting the switch or the switch contacts 8 are susceptible to wear due to mutual sliding, but both can be easily replaced as minimum unit parts.

Further, since the switch contactor 8 is a separate component, it can be manufactured in a separate process, and manufacturing accuracy can be particularly improved during molding. In other words, in the conventional structure in which the switch is constructed at the same time as the switch body 1, the more complex the mold shape is, the more likely the surface of the contact part is molded, but the switch contact 8 is flat and easy to manufacture, so it is reliable when molding The contact part can be exposed.

[Effects of the Invention] The present invention allows the process of assembling the conducting coil spring to be easily performed while visually observing the adapter by attaching and detaching it to the outer wall of the movable body in a direction perpendicular to the pushing direction of the switch. Thereby, the conduction coil spring can be easily replaced.

Furthermore, the switch portion can be assembled by simply fitting a pre-molded switch contact into a switch contact fitting groove provided in the switch body. Thereby, the switch contact can be easily replaced.

Therefore, it is possible to easily assemble and maintain the entire push-button switch, which is provided with power supply means that is continuous in the vertical direction inside, and has the effect that consumable parts can be replaced in minimum units.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is an exploded perspective view of a push button switch according to the invention, Fig. 2 is an enlarged view of a conductive coil spring, and Figs. 3a and 3b are FIGS. 4a and 4b are cross-sectional views showing the structure of a conventional push-button switch. DESCRIPTION OF SYMBOLS 1... Switch body, 2... Movable body, 3... Cover, 4... Display unit, 5... Adapter, 6a, 6b... Coil spring for continuity,
8...Switch contact, 11a...Switch contact fitting groove, 24...Adapter fitting groove, 25...Switch contact, 51...Spring support hole, 52...
...An arm for fitting the adapter.

Claims (1)

[Scope of Claim for Utility Model Registration] A display unit 4 for displaying the open/closed state of the switch is provided in a part of the movable body 2 attached to the switch body 1 to open/close the switch by pushing the switch. In the push button switch that supplies power to the display unit 4 via conduction coil springs 6a and 6b interposed between the switch body and the switch body, the push button switch has an outer wall of the movable body 2 perpendicular to the direction of the push operation. a spring support hole 51 which is provided penetrating in the direction of the pushing operation and in which at least one end of the conduction coil spring 6b is locked; An adapter 5 having an adapter fitting arm 52 that fits into the adapter fitting groove 24 from a direction perpendicular to the pushing direction with one end locked, and a contact portion for performing a predetermined switch change. a switch contact 8 which is molded into a substantially flat plate shape, and a switch contact fitting groove 11 which is provided in the switch body 1 and into which the switch contact 8 is inserted.
A push button switch comprising: a; and a switch contact 25 which is provided on the side of the conductor 2 and switches the switch by sliding the switch contact 8 portion.