JPH056637U - Remote control relay - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a remote control relay that can easily adjust the reaction force of the reaction spring in the OFF state after assembly. A fixed contact 22 and a movable contact 11 for opening and closing a load circuit, a polar operation electromagnet device 4 for driving the movable contact 11, a control switch 27 for controlling the operation electromagnet device 4, and the operation electromagnet device 4 An operating lever 29 that opens and closes the control switch 27 in conjunction with the plunger 5 that performs forward and reverse movements with the plunger 5, and a link 12 that opens and closes the movable contact 11 in association with the plunger 5 are further provided. A reaction spring 15 that is integrally supported with the contact 12 and acts on the link 12 when the contact is opened is provided. The spring force of the reaction spring 15 acts as a reaction force when the plunger 5 of the operation electromagnet device 4 is attracted. In order to adjust the reaction force after assembly, a groove 31 for holding the spacer 32 is provided on the surface where the reaction spring 15 contacts the base 1. did.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a remote control relay.

[0002]

[Prior Art]

 FIG. 4 is a side view showing a conventional remote control relay in an OFF state, FIG. 5 is a side view showing an essential part of FIG. 4, and FIG. 6 is a side view showing an ON state. The outer shell is composed of a base 1 and a cover 2, and has a groove 1a for a mounting bracket (not shown) and a claw 1b for mounting a DIN rail (not shown) at the bottom, and an opening 1c is formed at the top. The rivets 3 are integrally combined in 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 projecting the plunger 5 at the center of the base 1 as the top. ing. This operating electromagnet device 4 is of a polar type, and as shown in FIGS. 5 and 6, the plunger 5 is slidably arranged so as to penetrate through the bobbin 7 around which the electromagnetic coil 6 is wound. It has suction surfaces 5a and 5b. The first yoke 8 is in contact with the outer surface of the bobbin 7, and an opening 8a is formed on the upper surface of the first yoke 8 through which the tip 5c of the plunger 5 projects. 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. The link 12 for transmitting the movement of the plunger 5 to the movable contact 11 is located above the operation electromagnet device 4 and is rotatably fixed by a pin 13 and one end 12a is connected to the plunger tip 5c by a pin 14. ing. Reference numeral 15 denotes a repulsion spring supported by the support pin 13 of the link 12, one end 15a of which abuts on one end 12c of the link 12, the other end 15b abuts on the other end 12b of the link 12, and the link points are abutted against each other. It is configured to press 12 in a direction of pinching. In such a configuration, the reaction spring 15 does not apply a rotational force to the link 12 in the ON state of FIG. 6, but the tip 15c of the reaction spring 15 contacts the inner surface of the base 1 in the OFF state of FIG. The spring 15 is pushed downward, one end 15b is separated from the other end 12b of the link 12, and the other end 15a biases the link 12 in the direction of arrow B with a rotational force. This force acts as a repulsive force that causes the plunger 5 to work in the direction of arrow A and reduces the attraction force of the plunger 5.

The movable contact portion 16 is slidable in an insulator 18 whose one end is connected to the other end 12b of the link 12 by a pin 17 and a groove 18a formed in the other end of the insulator 18. It is composed of a mover 19 engaged with the movable contact 11 and fixed thereto, and a compression coil spring 20 arranged to act on the movable contact 11 to press the contact. The movable contact 11 is fixed to the main circuit terminal 21. The fixed contact 22 is arranged so as to be able to come into contact with and separate from the fixed contact 22. The convex portion 18b formed on the insulator 18 is engaged with the groove 1d of the base 1 and the groove (not shown) of the cover 2, and the movable contact portion 16 is brought into contact with the movable contact portion 16 in conjunction with the plunger 5. Driven away. The mover 19 is electrically connected to another main circuit terminal 24 by a shunt 23. One of the pair of control terminals 25 for connecting the remote operation electric wire is one of the lead wires 6a of the electromagnetic coil 6, and the other is the other terminal of the electromagnetic coil 6 via the diode 26 and the control circuit switch 27. The output line 6b is electrically connected to one printed circuit board 28. Reference numeral 29 denotes an operation lever, which is rotatably supported by a pin 30 on the side opposite to the link 12 with respect to the plunger 5. One end of the operation lever is connected to the tip 5c of the plunger 5 by a pin 14. By driving the jar 5, the link 12 is rotated in the opposite direction. The operating lever 29 is provided with a manual operating portion 29a which can be operated from the outside, which is arranged in the opening 1c of the base 1 and the cover 2. Further, there are display portions 29b on both sides of the manual operation portion 29a, and the ON / OFF state of the contact is displayed through the opening 1c. Further, the manual operation lever 29 has an operating portion 29c which acts on the actuator 27a of the control circuit switch 27 to open and close the control circuit switch 27.

Next, the operation will be described. FIG. 5 shows a state in which the remote control relay is OFF. In this state, the magnetic flux of the permanent magnet 9 causes the attraction surface 5a of the plunger 5 to be attracted to the bottom surface of the first yoke 8 as shown in FIG. The contacts are in a stable position in the open state. In this main circuit open state, when an ON operation switch (not shown) connected to the control circuit terminal 25 is turned on to excite the electromagnetic coil 6, the attraction force of the permanent magnet 9 on the plunger attraction surface 5a is reduced. , 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 22, 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 29 is rotated in the clockwise direction in conjunction with the plunger 5, and the display changes from "OFF" to "ON". In this series of operations, the operation lever 29 operates the actuator 27a of the control circuit switch 27 to switch the control circuit switch 26.

On the other hand, when the OFF operation switch is turned on in this main circuit closed state, the electromagnetic coil 6 reduces the attraction force of the permanent magnet 9 on the plunger attraction surface 5b and the attraction force on the other attraction surface 5a. Magnetic flux is generated in the increasing direction. As a result, the plunger 5 is driven in the direction of the arrow in FIG. 5, and the movable contact 11 is separated from the fixed contact 22 by the link 12. 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 operating lever 29 is interlocked 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 27. Next, when manually opening and closing the main contact from the outside, the contact can be opened and closed by operating the manual operation part 29a of the operation lever 29 to directly drive the plunger 5. In this case, the operation is to manually apply a peeling force equal to or greater than the attraction force of the plunger 5 to the plunger 5 forcibly to remove the attraction force so that another stable state is achieved. At this time, the movement of the movable contact portion 16 and the operation of the control circuit switch 27 are completely the same as the series of operations of the electric operation described above.

[0007]

[Problems to be solved by the device]

 Since the conventional remote control relay is configured as described above, in order to increase the reaction force and obtain a remote control relay that operates with a smaller ON operation current, twist to prevent a halfway stop due to variation in reaction force and dimensions. There is a problem in that the cost of the spring increases because it is necessary to improve the accuracy of the spring or change the specifications of the twist spring to improve the replacement.

The present invention has been made to solve the above problems, and an object thereof is to obtain a remote control relay in which the reaction force of the reaction spring in the OFF state can be easily adjusted after assembly.

[0009]

[Means for Solving the Problems]

 In the remote control relay according to the present invention, a groove for inserting a spacer is provided on the surface where a reaction spring provided on a link that opens and closes the movable contact in cooperation with the plunger of the operation electromagnet device contacts the base.

[0010]

[Action]

 In this device, one end of the reaction spring contacts the base when it is turned off and is used for the link, and the reaction force against the attraction force is easily adjusted after assembly by inserting the spacer into the groove provided in the base. it can.

[0011]

【Example】

 An embodiment of this invention will be described with reference to the drawings. Fig. 1 is a side view of the remote control relay in the OFF state, Fig. 2 is a view showing the main part of Fig. 1, and Fig. 3 is the same diagram as Fig. 2 showing the ON state. Are denoted by the same reference numerals and description thereof will be omitted. In the figure, reference numeral 31 is a groove provided in the base 1 for adjusting the magnitude of the reaction force acting on the link 12 by the reaction spring 15 when it is OFF, for adjusting the position of the surface where the tip 15c of the reaction spring 15 contacts the inner surface of the base. It is provided to hold the spacer 32.

If the ON operation current flowing through the electromagnetic coil 6 does not generate sufficient magnetic flux for operation because the reaction force is small, replace the spacer 32 with a thick one or add another one. The tip 15c of the reaction spring 15 lowers the position where it abuts the inner surface of the base to increase the reaction force and assist the operation. On the other hand, if the reaction force is so great that it stops halfway and does not turn off, replace the spacer 32 with a thinner one to weaken the reaction force.

[0013]

[Effect of the device]

 As described above, according to the present invention, since the magnitude of the reaction force of the reaction spring in the OFF state can be adjusted by the spacer, there is an effect that a remote control relay with good assembly can be obtained.

[Brief description of drawings]

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

FIG. 2 is a side view in an OFF state showing the configurations of a movable contact unit and an operating electromagnet device of FIG.

FIG. 3 is a side view of the ON state of FIG.

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 the ON state of FIG.

[Explanation of symbols]

 1 Base 4 Operation Electromagnetic Device 5 Plunger 12 Link 15 Repulsion Spring 16 Moving Contact 22 Fixed Contact 27 Control Circuit Switch 29 Operation Lever 31 Groove 32 Spacer

Claims (1)

[Claims for utility model registration] [Claim 1] A fixed contact and a movable contact for opening and closing a load circuit, and a polar operation electromagnet device for driving the movable contact,
A control switch for controlling the operation electromagnet device, an operation lever for opening and closing the control switch in conjunction with a plunger performing forward and reverse motions in the operation electromagnet device, and the movable contact in association with the plunger. A reversing spring is provided which is opened and closed and which is supported integrally with the link and acts on the link when the contact is opened. The spring force of the repulsion spring acts as a reaction force when the plunger of the operating electromagnet device is attracted. In the remote control relay that operates, the remote control relay is characterized in that a groove capable of holding a spacer is provided on a surface where the reaction spring abuts the base so that the reaction force after assembly can be adjusted.