JPH0428131A - Remote control relay - Google Patents

Abstract

PURPOSE:To simplify adjustment of a gap with high reliability by inserting spacers with different thicknesses into the attracting plane between a plunger and a yoke based on necessity in the final step of assembly. CONSTITUTION:Spacers 30 and 31 for adjusting a gap are inserted into the attracting plane between a plunger 5 and a yoke 8 of an electromagnet device 4. By this construction, when malfunction of the operating characteristics such as the lowest operating voltage and the like is generated in the final inspection step of assembly, the gap is changed by changing over the spacers 30 and 31. Accordingly, in the final step of assembly, malfunction can be eliminated reliably by simple operation of changing spacers over, and an inexpensive remote control relay with high production performance is obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a remote control relay [Prior art 1] Fig. 5 is a side view showing a conventional remote control relay in the F state; FIG. 5 is a side view showing the main parts, and FIG. 7 is a side view showing the ON state.

The outer shell consists 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 in the upper part, and the four holes (1d) are joined together by rivets (3).

The operating electromagnet device (4) is mounted on a base 7M as shown in Figure 5.
S Kogori Closed Mountain Honsatsu I Mab →~7ζ51- is stored in an upright position relative to the bottom (mounting surface) of the base (1) with the protruding side facing upward. This electromagnet device (4) is of a polar type, and as shown in FIGS. 6 and 7, the plunger (5) is attached to a bobbin (7) around which an electromagnetic coil (6) is wound.
It is arranged so that it can slide through it, and has suction surfaces (
5a) (5b). The first yoke (8) abuts the outer surface of the bobbin (7), and has an opening (8a) formed in its upper surface from which the tip (5C) of the plunger (5) projects. A pair of permanent magnets (9) are arranged on the left and right inner surfaces of the first yoke (8), and are in contact with the same type of pole, respectively. A pair of U-shaped second yokes (10) are in contact with the other poles of the permanent magnet (9), respectively.
It is arranged so as to surround the electromagnetic coil (6).

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

One of the pair of control terminals (24) to which the remote control wire is connected is connected to one of the lead wires (6a) of the electromagnetic coil (6), and the other is connected to the diode (25) and the control circuit switch (2).
6) to the other lead wire (6) of the electromagnetic coil (6).
b) and is electrically connected on one printed circuit board (27).

(28) is an operation lever, which is rotatably fixed to the plunger (5) by a pin (29) on the opposite side of the link (12), and one end is connected to the pin (14) so that the plunger (5), and is rotated in the opposite direction to the link (12) by driving the plunger (5). This operation lever (28) is equipped with a manual operation part (28a) that can be operated from the outside.
This is the opening (1) of the base (1) and cover (2).
c) located within. Also, this manual operation section (28a
) There is a display part (28b) on both sides of the contact point ON, O
The FF state is displayed through the opening (1c). Furthermore, this manual operation lever (28) is an actuator (26a) of the control circuit switch (26).
) to open and close the control circuit switch (26).

Next, the operation will be explained.

Figure 5 shows a state in which the remote control relay is OFF. In this state, as shown in Figure 6, due to the magnetic flux of the permanent magnet (9), the plunger (5) has its attraction surface (5a) attached to the first yoke ( 8) is held in an adsorbed state on the bottom of the
The contacts are also in a stable open position.

In this main circuit open state, when the ON operation switch (not shown) connected to the control circuit terminal (24) is turned on and the electromagnetic coil (6) is energized, the plunger adsorption surface (5
Magnetic flux is generated to reduce the attraction force by the permanent magnet (9) at a) and increase the attraction force at the other attraction surface (5b). As a result, the plunger (5) is driven in the direction of the arrow in FIG. 6, and the movable contact (11) is driven by the link (12).
) is pushed down toward the fixed contact (21), and the main circuit is closed. In this state, the suction surface (5b) of the plunger (5) is suctioned and held on the upper surface of the first yoke (8). At this time, the operating lever (28) is operated by the plunger (5).
) and rotates clockwise, and the display changes from rOFF J to "ON". During this series of operations, the operating lever (28) operates the actuator (26a) of the control circuit switch (26), and
).

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),
Magnetic flux is generated in a direction that increases the attraction force on the other attraction surface (5a). As a result, the plunger (5) is driven in the direction of the arrow in Fig. 7, and the movable contact (1) is driven by the link (12).
1) is separated from the fixed contact (21). This causes the main circuit to become open. This state is plunger (5)
This is an initial stable state in which the suction surface (5a) of is suctioned to the bottom surface of the first yoke (8). At this time, the operating lever (28
) rotates counterclockwise in conjunction with the plunger (5) to change the display from "ON" to "r OFF" and at the same time also switches the control circuit switch (26).

Next, when manually opening and closing the main contacts from the outside, the contacts can be opened and closed by operating the manual operation part (28a) of the operation lever (28) to directly drive the plunger (5).

The operation in this case is to manually apply a peeling force greater than the suction force of the plunger (5) directly to the plunger (5) to forcibly remove the suction and bring it to another stable state. The movement of the movable contact portion (15) and the operation of the control circuit switch (26) at this time are exactly the same as the series of electrical operations described above.

[Problem to be solved by the invention] In the conventional remote control relay as described above, a permanent magnet (9
) using a polar electromagnet device (4),
Applying current to the electromagnetic coil (6) to drive the plunger (5) means that the permanent magnet (9)
This is to cancel out the attraction force caused by the magnetic flux of the electromagnetic coil (6). In addition, the adsorption force largely depends on the gap.

Therefore, there is a need to be able to fine-tune this gap in order to ensure operating characteristics, especially minimum operating characteristics, and to do so at the final stage of assembly.

This invention was made to solve the above-mentioned problems, and the object is to obtain a remote control relay that allows gap adjustment to be performed easily and in a highly reliable manner at the final stage of assembly. Means for Solving Problem 1 In the remote control relay according to the present invention, an opening is formed in the bobbin so that the suction surface between the plunger and the yoke can be seen from the side, and the suction surface is attached to the suction surface through this opening as necessary in the final stage of relay assembly. Spacers of different thicknesses are inserted.

[Function 1] In this invention, spacers of different thicknesses can be inserted into the suction surface through the openings, so the gap can be adjusted at the final stage of relay assembly.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure is a side view of the remote control relay showing the OFF state, Figure 2 is a diagram showing the main parts of Figure 1, and Figure 3 is a side view of the remote control relay showing the ON state.
FIG. 4, which is the same figure as the above figure, is a conceptual diagram showing the relationship between the adsorption force and the gap, and the same or corresponding parts as those of the prior art are given the same reference numerals and the explanation thereof will be omitted. In the figure, (7a
), (7b) are openings formed between the plunger (5) of the polar operating electromagnet device (4) and the suction surface of the first yoke (8), and (30) and (31) are the suction surfaces. This is a gap adjustment spacer inserted into the surface.

In such a configuration, if a problem occurs in the operating characteristics such as the minimum operating voltage during the final check stage of assembly, the gap can be changed by replacing the spacers (30) and (31).

In addition, in the above embodiment, a bistable polarized electromagnet having an attractive stable state on both ON and OFF sides was used as the operating electromagnetic device, but an open-type polarized electromagnet with an attractive stable state on only one side may be used. [Effects of the Invention] As described above, according to the present invention, when a malfunction occurs in the final stage of assembling a remote control relay, the malfunction can be reliably resolved with the simple task of replacing the spacer, and is inexpensive. This has the effect of providing a remote control relay with high productivity.

[Brief explanation of drawings]

FIG. 1 is a side view in the OFF state showing an embodiment of the present invention, FIG. 2 is a side view in the OFF state showing the configuration of the movable contact portion and the operating electromagnet device, and FIG. 3 is a side view in the ON state. Figure 4 is a conceptual diagram showing the relationship between adsorption force and gap, Figure 5 is a side view of the conventional remote control relay showing the OFF state, Figure 6 is a diagram showing the main parts of Figure 5, and Figure 7 is the ON state. It is the same side view as FIG. 6 which shows a state. In the figure, (1) is a base, (2) is a cover, (4) is an operating electromagnet device, (5) is a plunger (7) is a bobbin,
(7a), (7b) indicate that the opening (8) is the first yoke;
2) is the link, (15) is the movable contact part, (26) is the control circuit switch, (28) is the operating lever (30), (
31) indicates a spacer. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] (1) A fixed contact and a movable contact that open and close the load circuit, a first main circuit terminal to which the fixed contact is attached, and a second main circuit terminal electrically connected to the mover to which the movable contact is attached. , a movable contact portion that holds the movable element, a polar operating electromagnet device that drives the movable contact portion, a control switch that controls the operating electromagnet device, and a plunger that performs forward and reverse motion in the operating electromagnet device. A remote control relay comprising an operation lever that opens and closes the control switch in conjunction with the control switch, a link that opens and closes the movable contact portion in conjunction with the plunger, and a base and cover that house these, wherein the operation electromagnet device is After being assembled into the base, an opening is formed in the bobbin of the operating electromagnet device through which the attraction surfaces of the plunger and yoke can be confirmed from the side, and the plunger and yoke are passed through this opening as necessary during the final check stage of relay assembly. A remote control relay characterized in that a spacer is inserted into the suction surface of the remote controller so that the gap can be adjusted.