JP2961664B2 - Power switch - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energization display switch provided with a light emitting member for displaying a state of a load switched by a reversing operation of a control.

2. Description of the Related Art As a conventional energization display switch of this type, there is, for example, one disclosed in Japanese Utility Model Publication No. 57-14337.

In this device, a current transformer is arranged in a bottom recess of a case (body), a support terminal is arranged on an upper surface of a partition plate provided in the recess, and a case cover is pivotably supported on a case cover. A cylindrical wall is projected from the lower surface of the operated handle, and a coil spring is interposed between the cylindrical wall and a movable contact having a sectional shape supported by a chevron ridge on the upper surface of the support terminal, and a movable contact is provided. Fixed contact terminals are installed facing each other on both sides of the slave, the primary winding of the current transformer is connected to the common terminal and the support terminal, and the secondary winding is connected to the light emitting display element mounted on the operation handle. .

[Problems to be Solved by the Invention] However, in such a conventional energization display switch, the current transformer is disposed in the recess on the bottom surface of the case. Project to the back side, and the depth dimension of the case becomes longer.

However, since this type of switch is mounted in a place where the installation space is relatively limited, such as a wall of a building, particularly in a place where the depth space is limited, the depth dimension of the case is as described above. If the length is too long, not only the workability at the time of mounting the switch is deteriorated, but also the switch itself may not be able to be installed, and the workability at the time of switch assembly is poor. The present invention
It is made in view of such a conventional problem, by using a diode bridge and a diode instead of a current transformer, and by using a configuration in which a case body and a lid are fastened by a pair of fasteners. It is intended to solve the above problems.

[Means for Solving the Problems] In order to achieve the above object, in the energization display switch of the present invention, a power supply side connection terminal, a load side connection terminal, and a movable contact that opens and closes one of these connection terminals are provided. An inverting mechanism for inverting the movable contact by swinging an operation element, and connecting an AC input terminal of a diode bridge between a support bracket of the movable contact and the other of the connection terminals; A case body containing a diode connected to the DC output terminal of the bridge,
A light-emitting diode supported by a substrate in the internal space with a light-transmitting cover connected between the AC input terminals of the diode bridge to obtain a predetermined voltage difference is built-in to emit light brightly. And a lid that supports the operation element.The lid can be easily assembled by fastening the two with a pair of fasteners, and the depth of the assembled body is prevented from becoming long. . Further, the operation element has a light-transmitting cover over the entire surface, and emits light brightly over the entire surface of the operation element. Further, a power supply side connection terminal and two load side connection terminals housed in the housing, a movable contact for switching between the two load side connection terminals and a movable contact, and the movable contact is inverted by swinging of an operator. An inverting mechanism for operating, connecting an AC input terminal of a diode bridge between the support bracket of the movable contact and the power supply side connection terminal, and connecting a diode to a DC output terminal of the diode bridge, A light emitting diode connected between the AC input terminals of the diode bridge is housed inside the operator in order to obtain the voltage difference of

Further, the connection terminal is formed by a power supply side connection terminal and two load side connection terminals, and the two load side connection terminals are switched and opened and closed by a movable contact, and between the support bracket and the power supply side connection terminal. A configuration in which a diode bridge or the like is provided may be employed.

[Operation] An AC input terminal of a diode bridge is connected between a support fitting of a movable contact and a power supply side connection terminal or a load side connection terminal, and a diode is connected to the DC output terminal, thereby obtaining a depth dimension of the body. Can be prevented from being lengthened, and the mountability to a wall or the like can be ensured, and the light emitting member can be brightly lit at low wattage.

Example Next, an example of the present invention will be described with reference to the drawings.

1 to 8 show an embodiment of the present invention, and are diagrams applied to a three-way switch.

First, the configuration will be described. In the figure, reference numeral 1 denotes a body, which is composed of a case main body 2 and a cover 3, and an operation hole 5 through which an upper part of an operation element 4 penetrates the cover 3, It is provided with an opening. The case body 2 is provided with an electric wire insertion hole 6 into which electric wires are individually inserted and a tool insertion hole 7 for operating a release button 7a, which are opened downward.

The interior of the case main body 2 is formed with a total of four chambers A to D in the center part, one at each end by partition walls 2a to 2c, and two chambers A at one end. And a load-side connection terminal to which two load-side wires are individually connected in the chamber B at the other end.
9 and 10 are stored respectively. Such power supply side connection terminal 8
Has two presser springs 11 and its release button 7a, and the load-side connection terminals 9 and 10 each have one presser spring 11 and its release button 7a.

Further, each of the load-side connection terminals 9 and 10 has bent portions 9a and 10a which are inserted into the chamber C provided on one side of the central portion through or through the partition wall 2c. Fixed contacts 12 and 13 are provided at the tips of 9a and 10a. The fixed contacts 12 and 13 are opposed to each other in the chamber C at a predetermined interval in the longitudinal direction. A movable contact 14 is interposed between the fixed contacts 12 and 13 in a reversible manner, and the movable contact 14 is reversed by the swing of the operation element 4. The movable contact 15 protruding from the fixed contact 12, 13 is selectively brought into contact with one of the fixed contacts 12, 13.

Reference numeral 16 denotes a support metal that supports the movable contact 14 in a swingable manner and is electrically connected to the movable contact 14,
One end thereof forms a V-groove 17 with an inclined portion provided on the bottom surface of the case body 2, and the V-groove 17 rotatably supports the lower end of the movable contact 14. The other end of the support bracket 16 is inserted through the partition wall 2b into the chamber D on the other side of the central portion, and one end of the lead wire 18 is connected to the end thereof. Further, room D
A part of the power supply side connection terminal 8 is inserted into the inside, and one end of a lead wire 19 is connected to the protruding portion 8a.

Reference numeral 20 denotes a diode bridge formed by integrally forming four diodes.
21 are connected, and in the joined state, both members 20 and 21
Is housed inside. The other end 16a of the support bracket 16 and the protruding portion 8a of the power supply side connection terminal 8 are individually connected to the AC input terminal of the diode bridge 20 by lead wires 22 and 23.

The operator 4 includes a frame 25 having an opening 4a penetrating vertically through a substantially rectangular hole, a polarizing plate 26 closing the upper end of the opening 4a of the frame 25, and a polarizing plate 26. It has a light-transmitting cover 27 mounted on the upper part of the frame 25 so as to cover 26, and a substrate 28 mounted on the lower end of the opening 4a. A light emitting diode 29, which is a specific example of a light emitting member connected to the circuit pattern, is arranged on the upper surface of the substrate 28, and is inserted into the opening 4a.

At the center in the longitudinal direction of the frame body 25 and on both sides in the width direction, fulcrum parts 30 each having a triangular shape pointed upward are formed to protrude laterally. An opening is provided inside one fulcrum 30.
A bulging portion 4b projecting into 4a is provided, and the bulging portion 4b is formed with a spring receiving hole 31 opening downward. A reversing spring 32 is inserted into the spring receiving hole 31, and the lower end of the reversing spring 32 is engaged with a projection provided on the upper end of the movable contact 14.
Due to the spring force of the reversing spring 32, the movable contact 14 is pressed against the lower support bracket 16, and the upper edges of both the fulcrum portions 30 are provided on the tops of the downwardly opening fan-shaped grooves 3a provided inside the lid 3. We are in pressure contact. Therefore, the operating element 4 is configured to be swingable with the upper end edge of the fulcrum portion 30 as a fulcrum, and the movable contact 14 performs a reversing operation according to the swinging direction.

The movable contact 14, the support fitting 16, the frame 25, and the reversing spring 32 constitute a reversing mechanism. Reference numeral 33 denotes a fastener for fastening the case body 2 and the lid 3.

 Next, the operation of the present embodiment will be described.

1 to 8 are diagrams showing a connection state between a power supply side connection terminal 8 and one load side connection terminal 9 of the present switch. A movable contact 15 provided on a movable contact 14 has a spring force of a reversing spring 32. Is pressed against one fixed contact 12.

When the protruding side of the operation element 4 is pressed from this state, the operation element 4 swings counterclockwise around the fulcrum portion 30, and inverts the reversing spring 32 held in the spring receiving hole 31 of the frame 25. Let
The movable contact 14 engaged and supported at its lower end is swung clockwise about the V groove 17. As a result, the movable contact 15 swings apart from the one fixed contact 12 and comes into contact with the other fixed contact 13, thereby connecting the power supply side connection terminal 8 and the other load side connection terminal 10.

In this case, the diode bridge 20 and the diode 21 are used to keep the forward drop voltage 1.8 V (= 0.6 × 3) between the power supply side connection terminal 8 and the load side connection terminals 9 and 10 at a predetermined value. In addition, a switch mechanism for housing the diode bridge 20 and the diode 21 in the chamber D on the other side of the center of the case body 2 and disconnecting and connecting the connection terminals housed in the chamber C on the one side of the center ( This is composed of the reversing mechanism, the movable contact 15 and the fixed contacts 12, 13, which are arranged side by side. Therefore, in this embodiment, it is possible to reduce the depth of the body and reduce the thickness of the entire switch without taking up a large space in the depth direction unlike the case of using a conventional current transformer. In addition, it is possible to secure the mounting property to a wall or the like having a limited depth space.

Next, when the right protrusion of the operation element 4 is pressed, the operation element 4 swings clockwise, and the reversing spring 32 moves the movable contact element 14.
Is turned to the left, and the movable contact 15 is turned to the other fixed contact 13
To make contact with one of the fixed contacts 12. Thereby, the power supply side connection terminal 8 and one load side connection terminal 9 are connected via the switch mechanism.

The lighting side of the light emitting diode 29 is a load side connection terminal.
The light emitting diode 29 may be illuminated at a low wattage in any case.

 FIG. 9 shows another embodiment of the present invention.

In this embodiment, the other load-side connection terminal 13 in the above embodiment is removed, and the present invention is applied to a one-way switch.

Other configurations and operations are the same as those of the above-described embodiment. With this configuration, the same effects as those of the above-described embodiment can be obtained.

In this embodiment, the support bracket 16 and the power supply side connection terminal 8 are used.
Although the example in which the diode bridge 20 and the like are interposed between them is described, the diode bridge 20 and the like may be interposed between the support bracket 16 and the load-side connection terminal 9.

In the above embodiment, an example in which the present invention is applied to a three-way switch and a one-way switch is described. However, the present invention is not limited to this, and it is needless to say that the present invention can be applied to other types of switches such as a four-way switch. It is.

[Effects of the Invention] As described above, the present invention is configured as described above, and has the following effects.

That is, it can be easily attached to a place where the installation space is relatively limited, such as a wall of a building, particularly a place where the depth space is limited, and the workability at the time of assembly and installation can be improved. In addition, it is possible to provide a small switch that is advantageous in terms of installation space.

In addition, the light emitting member can emit light brightly at low watts, and even when the power of the load fluctuates greatly (for example, 0.1 W to 50 W), the light emitting member can be lighted brightly with almost constant brightness. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing a preferred embodiment of the present invention with a cover removed, FIG. 2 is a plan view with a cover attached, FIG. 3 is a front view, and FIG. FIG. 5, FIG. 5 is a side view, FIG. 6 is a sectional view taken along the line VI-VI of FIG. 3, FIG. 7 is a sectional view taken along the line VII-VII of FIG. 2, and FIG. VIII
9 is a plan view of another embodiment of the present invention with a cover removed. 1: Body, 2: Case body 2a, 2b, 2c: Partition wall, 3: Lid 4: Operator, 8: Power supply connection terminal 9, 10: Load side connection terminal, 12, 13: Fixed contact 14: Movable contact, 15: movable contact 16: support bracket 20: diode bridge 21: diode, 25: frame 29: light emitting diode (light emitting member) 32: reversing spring

Continuation of front page (56) References JP-A-58-148519 (JP, A) JP-A-56-130235 (JP, U) JP-A-57-14337 (JP, Y2)

Claims (3)

(57) [Claims] 1. A power supply-side connection terminal, a load-side connection terminal, and a movable contact that opens and closes one of these connection terminals,
An inverting mechanism for inverting the movable contact by swinging the operation element, and connecting an AC input terminal of a diode bridge between the support metal of the movable contact and the other of the connection terminals; A case body containing a diode connected to a DC output terminal, a light-transmitting cover on the surface, and a light emitting diode supported by a substrate in the internal space. A lid that supports an operation element that emits light with a bright surface by being connected between the input terminals and built-in, and can be easily assembled by fastening both with a pair of fasteners, and the assembled container An energization display switch characterized by preventing the length of the body from being lengthened. 2. The energization display switch according to claim 1, wherein the operation element has a translucent cover over the entire surface, and emits light brightly over the entire surface of the operation element. 3. A power supply side connection terminal and 2 housed in a body.
And a movable contact for switching between the two load-side connection terminals, and a reversing mechanism for reversing the movable contact by swinging an operating element, and supporting the movable contact. An AC input terminal of a diode bridge is connected between the bracket and the power supply side connection terminal, a diode is connected to a DC output terminal of the diode bridge, and a diode bridge is connected between the AC input terminals of the diode bridge to obtain a predetermined voltage difference. The power supply display switch according to claim 1, wherein a light emitting diode connected to the switch is housed inside the operator.