JPH06162902A - Remote control relay - Google Patents

Abstract

PURPOSE:To provide a compact and high-efficiency remote control relay requiring only a small operation current and requiring no regulation for a switching point. CONSTITUTION:At an engagement part of an operation lever 28 with an actuation lever 34, rattling is provided to prevent actuation of the actuation lever 34 till the operation lever 28 exceeds a polarization point of an electromagnet device 4. A spring member 30 is provided to energize the actuation lever 34 to hold a closed condition of a microswitch 26A till the operation lever 28 actuates the actuation lever 34 in an OFF condition. A changing point of an operation current to each operation of an ON operation and an OFF operation can thus be set at a stable position close to an adsorption point, thereby a compact and high-efficiency remote control relay requiring no regulation can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control relay.

[0002]

2. Description of the Related Art FIG. 4 is a side view showing an OFF state of a conventional remote control relay disclosed in, for example, Japanese Patent Application Laid-Open No. 4-87232, FIG. 5 is a side view showing an essential part of FIG. 4, and FIG. 6 is an ON state. And FIG. 7 is a connection circuit diagram.

The outer shell consists of a base 1 and a cover 2,
It has a groove 1a for a mounting bracket (not shown) and a claw 1b for mounting a DIN rail (not shown) on the bottom, and an opening 1 on the top.
c is formed and is integrally combined with the rivets 3 at the four holes 1d.

As shown in FIG. 4, the operating electromagnet device 4 is housed in an upright position with respect to the bottom (mounting surface) of the base 1 with the side from which the plunger 5 protrudes in the substantial center of the base 1 as the top. . This electromagnet device 4 is a bistable and polarized type having two attracting states, and as shown in FIGS. 5 and 6, the plunger 5 is slidable through a bobbin 7 around which an electromagnetic coil 6 is wound. Are arranged and the suction surfaces 5a, 5 are provided at both ends.
b. The first yoke 8 is in contact with the outer surface of the bobbin 7, and an opening 8a through which the tip 5c of the plunger 5 projects is formed on the upper surface. A pair of permanent magnets 9 are arranged on the left and right inner side surfaces of the first yoke 8 and are in contact with the same kind of poles. A pair of U-shaped second yokes 10 are respectively in contact with the other poles of the permanent magnet 9 and are arranged so as to wrap the electromagnetic coil 6.

A link 12 for transmitting the movement of the plunger 5 to the movable contact 11 is located above the operating electromagnet device 4 and is rotatably fixed by a pin 13 so that one end 12a is pin 14 at the plunger tip 5c. Are connected by.
The movable contact portion 15 has an insulator 17 whose one end is connected to the other end 12b of the link 12 by a pin 16, and the insulator 17
Of the movable contact 11 in which the movable contact 11 is fixedly slidably engaged with the groove 17a formed at the other end of the movable contact 11
The movable contact 11 is composed of a compression coil spring 19 arranged to press the contact by acting on the main circuit terminal 20.
It is arranged so as to be able to come in contact with and separate from the fixed contact 21 fixed to the. The convex portion 17a formed on the insulator 17 is engaged with the groove 1d of the base 1 and the groove (not shown) of the cover 2, and in conjunction with the plunger 5, the movable contact portion 1
5 is driven in the contact contact / separation direction. The mover 18 is electrically connected to another main circuit terminal 23 by a shunt 22.

One of the pair of control terminals 24 for connecting the remote control electric wire is one of the lead wires 6a of the electromagnetic coil 6, and the other is a diode 25 and a control circuit switch 26 to connect the electromagnetic coil 6 to each other. It is electrically connected to the other lead wire 6b on one printed board 27.

Reference numeral 28 denotes an operation lever, which is the plunger 5
On the other hand, a pin 29 is rotatably attached to the opposite side of the link 12 and one end thereof is connected to the tip portion 5c of the plunger 5 by the pin 14 and is driven by the plunger 5 to be separated from the link 12 described above. Can be rotated in the opposite direction.
The operation lever 28 is a manual operation unit 2 that can be operated from the outside.
8a, which comprises the base 1 and the cover 2
Is arranged in the opening 1c. In addition, this manual operation unit 2
There are display parts 28b on both sides of 8a, and the contact is ON / OFF.
The state is displayed through the opening 1c. Further, the manual operation lever 28 has an operating portion 28c that acts on the actuator 26a of the control circuit switch 26 to open and close the control circuit switch 26.

Next, the operation will be described. FIG. 5 shows a state in which the remote control relay is off.
As shown in, the magnetic flux of the permanent magnet 9 causes the plunger 5 to
Is held in a state in which its suction surface 5a is suctioned to the bottom surface of the first yoke 8, and the contacts are also in a stable position in the open state.

In this main circuit open state, when the ON operation switch (see FIG. 7) connected to the control circuit terminal 24 is turned on and the electromagnetic coil 6 is excited, the attraction force of the permanent magnet 9 on the plunger attraction surface 5a. Is generated and a magnetic flux is generated so as to increase the attraction force on the other attraction surface 5b. As a result, the plunger 5 is driven in the direction of the arrow in FIG. 6, the movable contact 11 is pushed down by the link 12 toward the fixed contact 21, and the main circuit is closed. In this state,
The suction surface 5b of the plunger 5 is suction-held on the upper surface of the first yoke 8. At this time, the operation lever 28 is rotated in the clockwise direction in conjunction with the plunger 5, and the display is "OF.
F] changes to “ON.” In this series of operations, the operation lever 28 operates the actuator 26 a of the control circuit switch 26 to switch the control circuit switch 26.

On the other hand, when the main circuit is closed, it is turned off.
When the operation switch is turned on, the electromagnetic coil 6 reduces the attraction force of the permanent magnet 9 on the plunger attraction surface 5b,
A magnetic flux is generated in a direction in which the attraction force on the other attraction surface 5a is increased. As a result, the plunger 5 is driven in the direction of the arrow in FIG.
Is separated from. As a result, the main circuit is opened.
This state is an initial stable state in which the attraction surface 5a of the plunger 5 is attracted to the bottom surface of the first yoke 8. At this time, the operation lever 28 interlocks with the plunger 5 and rotates counterclockwise to change the display from "ON" to "OFF", and at the same time, switch the control circuit switch 26.

Next, when the main contact is opened and closed from the outside by the operation, the contact can be opened and closed by operating the manual operation portion 28a of the operation lever 28 to directly drive the plunger 5. In this case, the peeling force greater than the attraction force of the plunger 5 is manually applied to the plunger 5 directly.
In addition to forcibly peeling off the adsorption, another stable state is achieved. At this time, the movement of the movable contact portion 15 and the operation of the control circuit switch 26 are exactly the same as the series of operations of the electric operation described above.

[0012]

In a bistable polar electromagnet device using a permanent magnet and having two attraction states, there is a polarization point in the middle of the plunger stroke due to its structure, and the attraction force is also set to 0. , The strength becomes sharper as it gets closer to the adsorption surface. Therefore, in the remote control relay in which the operation current is switched by one C contact switch like the above-mentioned conventional one, it is necessary to finely adjust the switching point, and there is a problem that the operation current is increased in expectation of inertia. There was a point.

The present invention has been made in order to solve the above problems, and provides a highly productive compact remote control relay with a small operating current and no adjustment of switching points. With the goal.

[0014]

SUMMARY OF THE INVENTION A remote control relay according to the present invention prevents an operating lever from being operated at an engaging portion between the operating lever and the operating lever until the operating lever exceeds a polarization point of an electromagnet device. There is play and it is off
In the state, a spring member for urging the operating lever is provided so as to hold the micro switch in the closed state until the operating lever operates the operating lever.

[0015]

In the remote control relay according to the present invention, the plunger of the electromagnet device is driven by the ON operation, and the operating lever connected to the plunger is operated by the operation.
Since the backlash is provided at the engaging portion with the operating lever, the operating lever operates later than the operating lever. By making this amount of backlash appropriate, the operating lever, i.e., the electromagnet device, does not move the operating lever until it exceeds the polarization point, so the switching point of the operating current is always at the point where it exceeds the polarization point. Become.

Similar to the ON operation, the OFF operation does not move the operating lever until the electromagnet device exceeds the polarization point due to the backlash of the engaging portion. However, in the OFF operation, when the operation lever operates and the operation lever becomes free, the force for holding the micro switch in the closed state disappears and the operation current switches before it exceeds the polarization point. The actuating lever is biased to hold the microswitch closed until the lever actuates the actuating lever.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a side view of a remote control relay showing an OFF state, FIG. 2 is a view showing a main part of FIG. 1, and FIG. 3 is a side view showing an ON state. Is attached and the description is omitted. In the figure, 26A is a micro switch as a control circuit switch, which is fixed to the base 1 and the cover 2 by positioning pins 32 and 33. Reference numeral 34 denotes an operating lever, which is rotatably supported by one of the positioning pins 33 of the microswitch 26A and has a groove portion 34a at one end which engages with the engaging portion 28d of the operating lever 28 with an appropriate backlash. Actuator 26a of micro switch 26A at the end
The urging portion 3 that is urged only in the OFF state by the convex portion 34b that operates the and the spring member 30 provided on the base 1.
4c are formed.

In such a structure, when the ON operation current flows through the control terminal 24 in the OFF state of FIG. 2, the plunger 5 is driven in the direction of arrow A, whereby the link 12 rotates in the direction of arrow B. The movable contact 11 is closed. At this time, the operating lever 28 rotates in the direction of the arrow C, but the operation is delayed due to the looseness in the engaging portion 28d and the groove 34a of the operating lever 34, and the operating lever 34 moves after the plunger 5 exceeds the polarization point. Rotate in the direction of arrow D,
The convex portion 34b of the operating lever 34 is the micro switch 26A.
The actuator 26a is released to switch the operation current.

When the operating lever 28 rotates in the direction of arrow C in this manner, the operating lever 34 becomes free,
Since the biasing portion 34c is biased by the spring member 30 with a force sufficient to hold the micro switch 26A in the closed state, the actuating lever 34 is actuated by the operating lever 28.
The microswitch 26A remains closed until is activated. Thereby, the operation current can be switched when the plunger 5 exceeds the polarization point.

On the other hand, in the OFF operation, the plunger 5 is driven in the direction of arrow A in FIG. 3, whereby the link 12 rotates in the direction of arrow B and opens the movable contact 11. At this time, the operation lever 28 rotates in the direction of arrow C, but is turned on.
Since the engaging portion 28d and the groove portion 34a of the actuating lever 34 have backlash as in the operation, the actuating lever 34 is rotated in the direction of arrow D after the plunger 5 exceeds the polarization point. When the operating lever 34 rotates, the convex portion 34b of the operating lever 34 pushes the actuator 26a of the micro switch 26A to switch the operation current.

[0021]

As described above, according to the present invention, since the play is provided in the engaging portion of the operating lever and the groove portion of the operating lever, the switching point of the operating current for each of the ON operation and the OFF operation is attracted. Since it can be set to a stable position close to the point, there is the effect that a compact and highly efficient remote control relay can be obtained without adjustment.

[Brief description of drawings]

FIG. 1 is a side view in an OFF state showing an embodiment of the present invention.

FIG. 2 is a side view showing a configuration of a movable contact unit, an operating electromagnet device, and a control circuit unit in an OFF state.

FIG. 3 is a side view showing an ON state.

FIG. 4 is a side view showing an OFF state of a conventional one.

5 is a diagram showing a main part of FIG.

FIG. 6 is a side view showing an ON state.

FIG. 7 is a connection circuit diagram of a conventional one.

[Explanation of symbols]

 1 Base 4 Operation Electromagnetic Device 5 Plunger 12 Link 15 Moving Contact 26A Micro Switch 26a Micro Switch Actuator 28 Operation Lever 28d Operation Lever Engaging Part 30 Spring Member 34 Actuating Lever 34a Actuating Lever Groove 34b Actuating Lever Convex 34c Energizing part of actuating lever

Claims (1)

[Claims] 1. A fixed contact and a movable contact for opening and closing a load circuit, a bistable polarized electromagnet device for driving the movable contact and having two attraction states, a control switch for controlling the electromagnet device, and the electromagnet. In a remote control relay equipped with an operation lever for opening and closing the control switch in conjunction with a plunger that performs forward and reverse movements in the device, a micro switch that constitutes the control switch, and an axis stop that is interlocked with the operation lever. An operating lever for activating the micro switch, wherein the engaging portion between the operating lever and the operating lever prevents the operating lever from operating until the operating lever exceeds a polarization point of the electromagnet device. There is play,
Further, in the OFF state, a remote control relay is provided, which is provided with a spring member for urging the operation lever so as to hold the micro switch in the closed state until the operation lever operates the operation lever.