JPH0775129B2 - Switch with indicator light - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch with an indicator lamp in which a indicator lamp for performing a display according to contact switching is housed in a handle which is rotatably operated in a seesaw motion.

[0002]

2. Description of the Related Art As a switch with indicator light, body and mosquitoes
Opening and closing to rotate contacts while exposing the operation surface from the top surface of the body consisting of bars and the first terminal plate to which one end of the power source is connected A body and a coil spring whose upper portion is held by the handle and whose lower portion is held by the opening / closing body, and which applies a reversing turning force to the opening / closing body in response to a turning operation of the handle;
A second terminal plate to which one end of a load is connected and a fixed contact that contacts the movable contact fixed to the opening / closing body is fixed; and a third terminal plate to which the other end of the power source and the other end of the load are connected The contact is opened and closed by reversing and rotating the opening / closing body according to the turning operation of the handle. Then, a display lamp for performing display according to contact switching and a current limiting resistor are housed in a handle having a printed circuit board attached to the lower surface thereof, and contact springs are respectively attached to the second and third terminal plates to which the load lines are connected. A piece is attached, and this contact spring piece is elastically brought into contact with the copper foil portion formed on the lower surface of the printed board and connected to both ends of the series circuit of the indicator lamp and the current limiting resistor.

[0003]

However, in the above-mentioned structure, the arc generated at the time of switching the contacts jumps to the contact spring piece attached to the third terminal plate, which causes the power supply to be short-circuited by the arc. There was a problem. The present invention has been made in view of the above points, and an object of the present invention is to provide a switch with an indicator light capable of preventing a power supply short circuit due to an arc when a contact is opened and closed.

[0004]

In the present invention, in order to achieve the above object, the other end of the indicator lamp 21 and the third terminal plate 29 are provided.
Is connected using a lead wire 28 , and the upper end of the contact point between the movable contact 6 and the fixed contact 5 is between the contact portion and the third terminal plate 29.
A rib that is located above the touch area and separates them from each other
16 is formed.

[0005]

According to the present invention, as described above, the other end of the indicator light 21 and the third terminal plate 29 are connected by the lead wire 28 without using the contact spring piece, thereby making it difficult for the arc to jump. A rib 16 is formed between the contact portion and the third terminal plate 29 to isolate the contact portion and the third terminal plate 29 from each other, so that an arc connecting the contact portion and the third terminal plate 29 is unlikely to be generated, and when the contact is opened or closed. This is to prevent the power supply short circuit due to the arc.

[0006]

1 to 5 show an embodiment of the present invention. The switch of this embodiment comprises a body 1 and a cover 14 attached to the body 1. The body 1 made of synthetic resin and the cover 14 constituting the body are integrated by a metal assembly frame 30. Be assembled into. At the time of this assembly, body 1
Also, the assembly frame 30 is attached to the grooves 31 and 32 formed on the side surface of the cover 14, the bifurcated locking claw 34 at the tip of the side piece 33 of the assembly frame 30 is expanded, and the locking claw 34 is formed in the step of the groove 31. The cover 14 and the body 1 are integrally assembled by being locked to the portion. Here, a pair of locking projections 35 are provided on the end surface of the assembly frame 30.
The projecting portion is detachably attached to a mounting frame made of a synthetic resin, which is used when the wiring device is embedded and mounted on a wall surface or the like, by a locking projection 35, and the locking is formed in the central portion. The holes 36 can be attached to a ready-made metal mounting frame.

At both ends of the body 1, there are formed an accommodating portion for accommodating a quick-connect terminal to which one end of a power source is connected and an accommodating portion for accommodating a quick-connect terminal to which both ends of a load are connected, and a contact opening / closing mechanism in the center. A storage portion is formed to store the opening / closing body 7 constituting the. These housings are formed by partitioning the inside of the body 1 with partition walls. An electric wire insertion hole 12 for inserting an electric wire and a release hole 13 for operating the release button 11 are formed on the bottom surface of the storage portion in which the quick-connect terminal of the body 1 is stored.

The fast-connecting terminal to which one end of the power source is connected is composed of the first terminal plate 3, the lock spring 10 and the release button 11, and two sets of fast-connecting terminals to which both ends of the load are connected are provided. The quick-connect terminal is composed of the second terminal plate 2 and the lock spring 10, and the other is made up of the third terminal plate 29 and the lock spring 10. The release button 11 is provided in common to each of the quick-connect terminals. Here, the second terminal board 2
One end of the load is connected to the quick-connect terminal equipped with
The other end of the load and the other end of the power source are connected to the quick-connect terminal provided with the terminal plate 29. That is, the switch with indicator light of this embodiment is connected to the power supply AC and the load L as shown in FIG.

A support piece 8 laid on the bottom surface of the central housing portion is extended from the first terminal plate 3, and the support piece 8 is provided.
The tip end of each is bent into a mountain shape to form a support protrusion 8a, and the opening / closing body 7 is rotatably mounted on the support protrusion 8a. The second terminal plate 2 is formed with an extending piece 2a which extends in the central storage portion and is bent so that its tip faces perpendicularly to the longitudinal direction of the body 1, and the fixed contact 5 is formed on the extending piece 2a. Is fixed.

The opening / closing body 7 has a U-shape that opens upward, and has a pair of rotation restricting pieces 7a formed from both sides of the lower part thereof, and is provided between the rotation restricting pieces 7a so as to project from the inner surface of the body 1. The rotation angle is regulated by engaging the ribs. A movable contact 6 is fixed to a portion of the opening / closing body 7 facing the fixed contact 5 of the second terminal plate 2. The handle 15 is in the shape of a box with an open lower surface, and a substantially inverted triangular rotation shaft 17 is projectingly provided on the lower portions of both side surfaces, and a coil spring 25 is provided from the center of the inner bottom surface.
A bar-shaped projection 15a for fixing the upper part of the is projected. A transparent window 22 that allows light from the indicator lamp 21 to pass through is formed on the upper surface of the handle 15, and a transparent cover 23 is attached to the upper portion of the handle 15.

The coil spring 25, which applies a reversing rotational force to the opening / closing body 7 in response to the operation of the handle 15, has an upper portion fixed by the rod-shaped projection 15a of the handle 15 and a lower portion housed in the opening / closing body 7. And is interposed between the handle 15 and the opening / closing body 7. An indicator light 21 such as a neon lamp and a current limiting resistor 20 are housed inside the handle 15, and a printed circuit board 19 is attached to the lower surface of the handle 15 to close the coil spring 25 as shown in FIG. A through hole 24 is formed. Only one side of the lead of the indicator lamp 21 is mounted on the printed circuit board 19, and the end portion of the other lead to which the current limiting resistor 20 is connected is connected to the third terminal board 29 using the lead wire 28. The connection between the third terminal plate 29 and the lead wire 28 is performed using a connecting fitting in which one end of the lead wire 28 is caulked and fixed,
No need for soldering work. In this way, the portion connecting the third terminal plate 29 and the other end of the indicator light 21 is connected to the lead wire 2
8 is used, the coating of the lead wire 28 makes it difficult for the arc generated when the contacts are opened and closed to jump. The copper foil portion 26 formed on the lower surface of the printed circuit board 19 to which the leads of the indicator lamp 21 are connected is formed long in the longitudinal direction of the body 1 and serves as a contact surface of a contact spring piece 27 described later.

The center of the cover 14 is bulged to form a rectangular frame, and the handle 15 is housed in the frame.
Bearing portions 18 to which the rotating shafts 17 are fitted are respectively formed on the inner walls of the frame portion in the width direction, so that the handle 15 is movably held by the seesaw. The second terminal plate 2 has a conductive contact spring piece 2 formed of a spring material.
7 is integrally attached, and the contact spring piece 27 contacts the copper foil portion 26 formed on the lower surface of the printed circuit board 19.

By the way, in the case of the present embodiment, as described above, the connection between the third terminal plate 29 and the lead wire 28 is made by the lead wire 28 to prevent the arc from jumping. As shown in FIG. 2, the boundary part between the contact part of the partition wall 38 and the third terminal plate 29, which separates the housing part housing the terminal plate 2 and the third terminal plate 29 from the central housing part, is raised upward .
The upper end is above the contact point between the movable contact 6 and the fixed contact 5.
The ribs 16 located on one side are formed so as to isolate the third terminal plate 29 from the contact portion, and the third terminal plate 2
It is difficult to form an arc that connects 9 and the contact portion. Therefore, in this embodiment, there is no risk of a power source short circuit due to an arc.

In the switch with indicator light of the present embodiment, when the light transmitting window 22 side is pressed, the opening / closing body 7 is reversed and rotated by the action of the coil spring 25 which is compressed and accommodated, and the movable contact 6 is fixed. 5 and contacts the second and third terminal plates 2,
It is confirmed that the power is supplied between 29 and the power supply is also supplied to the indicator lamp 21 connected between the second and third terminal boards 2 and 29, the indicator lamp 21 lights up, and the load is on. indicate.

On the contrary, when the side opposite to the translucent window 22 is pressed,
The opening / closing body 7 is turned in the opposite direction to the above-mentioned direction, the movable contact 6 is separated from the fixed contact 5, the power supply to the load is stopped, and the power supply state of the indicator lamp 21 is also changed. It goes out and goes out.

[0016]

As described above, according to the present invention, since the lead wire is used to connect the other end of the indicator lamp and the third terminal plate, the conductive portion is insulated by the coating and the arc jumps. Also, the upper end is movable between the contact and the third terminal plate.
Since a rib that is located above the contact portion between the point and the fixed contact and isolates the two from each other is formed, it is difficult to generate an arc that connects the contact portion and the third terminal plate. , It is possible to prevent the power supply short circuit due to the arc when opening and closing the contacts.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view after assembly of the above.

FIG. 3 is a plan view when the cover side of the above is removed.

FIG. 4 is a perspective view showing a peripheral structure of a printed circuit board.

FIG. 5 is a circuit diagram showing a usage state of a switch.

[Explanation of symbols]

1 Body 2 2nd Terminal Board 3 1st Terminal Board 5 Fixed Contact 6 Moving Contact 7 Open / Close Body 14 Cover 15 Handle 16 Rib 19 Printed Circuit Board 21 Indicator Light 25 Coil Spring 27 Contact Spring Piece 28 Lead Wire 29 Third Terminal Board 38 Partition

Claims (2)

[Claims] 1. A handle which is mounted so as to be movable in a seesaw manner by exposing an operation surface from an upper surface of a body composed of a body and a cover , and rotates in a state of being in contact with a first terminal plate to which one end of a power source is connected. An opening / closing body that performs contact switching, a coil spring that holds the upper part by the handle and the lower part is held by the opening / closing body, and applies a reversing turning force to the opening / closing body according to the turning operation of the handle; A second terminal plate having one end connected thereto and a fixed contact fixedly contacting the movable contact fixed to the opening / closing body, and a third terminal plate connected to the other end of the power source and the other end of the load, An indicator lamp housed in the handle and a printed circuit board attached to the lower surface of the handle and connected to one end side of the indicator lamp, and elastic to the copper foil portion of the lower surface of the printed circuit board to which one end side of the indicator lamp is connected. The contact spring piece that comes into contact is Attached to the terminal plate, performed using the lead wire connection between the other end and a third terminal board of the indicator, is solid and the movable contact upper end between the contact portion and the third terminal plate
A switch with an indicator light, characterized in that it is formed above the contact portion of the constant contact and is formed with a rib separating the two. 2. A display lamp with switch of claim 1, wherein forming at isolated partition walls, characterized by comprising between the contact portions of the ribs and the housing chamber of the second and third terminal plates.