JPH06162865A - Electromagnetic switch - Google Patents

Abstract

PURPOSE:To enable a moving piece for mounting a rail to be easily operated, even when a gap is narrowed between an electromagnetic contactor and a thermal type overload relay. CONSTITUTION:An engagement projection piece 10 is erected on a moving piece 6. A moving plate 11 coupled to the piece 10 is laid beneath a moving plate retainer 12 of inverted-U shape and made to pass through a side wall 3B. Also, the projected section of the plate 11 is provided with a hole 13 for a pressing work. A driver is inserted in the hole 13 and pushed to shift the moving piece 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic switch, and more particularly to a rail mounting device.

[0002]

2. Description of the Related Art FIG. 4 is a side view showing a combination of an electromagnetic switch 1 and a thermal overload relay 2 which are combined and mounted on a base 3 which can be mounted on a rail and screwed, and FIG. 4 is a plan view taken along the arrow P in FIG. 4, and FIG. 5B is a cross-sectional view taken along the line QQ in FIG. 6 is a plan view of the base 3, and FIG. 7 is FIG.
8 is a sectional view taken along line RR of FIG. 8, and FIG. 8 is a perspective view taken along line C of FIGS. Two strips 4 are formed on the side wall surface 3A of the base 3 adjacent to the thermal overload relay to form the strip piece 5. A movable piece 6 orthogonal to the tip of the strip piece 5 is provided,
The pull hole 7 is provided in the outer portion 6A of the base 3 of the movable piece 6,
A movable engaging claw 8A is provided on the inner portion 6B. Further, a leg portion 9 is provided below the side wall surface 3B facing the side wall surface 3A, and a fixed engagement claw 8B is provided inside the leg portion 9. That is, the movable engaging claw 8A and the fixed engaging claw 8B sandwich a rail (not shown) to fix the base 3.

[0003]

In the conventional structure, when the base 3 is detached from the rail, the electromagnetic contactor 1 and the thermal overload in a combined state as shown in FIGS. 5A and 5B are combined. Driver tool D indicated by the chain line in the gap y with the relay 2.
1 is inserted from the vertical direction, and the tip is inserted into the pull hole 7 as shown in FIG. It can be removed by removing from the rail. At this time, the gap y between the electromagnetic contactor 1 and the thermal overload relay 2 is made relatively large so that the driver tool D1 can be operated. If this space y becomes large, the overall size Y in FIG. 5 (A) will become large. Further, when the electromagnetic switch is closely attached as shown in FIG. 9, it is difficult to operate the driver tool D2 in this state because it is restricted by the dimension X shown in FIG. 9, and it is difficult to remove the base 3 from the rail. Is.

The object of the present invention is to make the gap y between the electromagnetic contactor 1 and the thermal overload relay 2 as small as possible to reduce the overall size Y, and also when the electromagnetic switch is closely attached. An object of the present invention is to provide a rail mounting device that allows easy removal of the base.

[0005]

To achieve this object, the present invention relates to an electromagnetic switch in which an electromagnetic contactor and a thermal overload relay are connected and combined, and the base of the electromagnetic contactor is mounted on a rail. In addition, two strips are formed on the side wall surface of the base adjacent to the thermal overload relay to form a strip, and a movable piece orthogonal to the tip of the strip is attached to the inside of the base of the movable piece. A rail mounting movable engaging claw is provided at the tip of the portion, a pull hole is provided at the tip outside the base, and a leg portion is provided at the other side wall surface facing the side wall surface, and rail mounting fixing is performed inside the leg portion. With the engaging claw, an engaging projection piece is provided on the inner surface of the base of the movable piece, and a strip-shaped movable plate that engages with the engaging projection piece projects through the side wall surface on the leg side of the base. It is characterized by having done. This movable plate passes through an inverted U-shaped movable plate retainer provided on the bottom surface of the base, and a pressing hole is provided at a portion protruding through the side wall surface, and a recess is formed on the leg surface facing the pressing hole. May be provided.

[0006]

According to the present invention, when the driver tool is inserted into the pushing hole of the movable plate and the movable plate is pushed through the driver tool, the movable piece interlocked with the movable plate moves and the movable engaging claw is disengaged from the rail.

[0007]

1 is a plan view of a base of an embodiment of the present invention,
2 is a sectional view taken along the line RR of FIG. 1, FIG. 3 (A) is a perspective view of a portion indicated by an arrow A in FIGS. 1 and 2, and FIG. 3 (B) is a perspective view of a portion indicated by an arrow B in FIG. The same parts as those shown in FIGS. 6 to 8 are the same parts. In this structure, the engaging projection piece 10 is provided on the surface of the inside of the movable piece 6B of the conventional base 3, and the engagement projection piece 1 is provided.
A movable plate 11 that engages with 0 is provided. The movable plate 11 is passed through a reverse U-shaped movable plate retainer 12 planted on the bottom surface of the base 3 and penetrates the side wall surface 3B of the base 3 on the leg 9 side to be projected to the outside. Then, a pushing hole 13 is bored in the protruding portion, and a concave portion 14 is provided on the surface of the leg portion 9 at a position facing the pushing hole 13. When the base 3 is removed from the rail, the tip of the driver tool D1 is inserted into the recess 14 by penetrating the pushing hole 13 as shown in FIG. 2 (B). Then, if the grip of the driver tool D1 is pushed in the direction of the arrow S, the movable plate 11
Moves in the direction of the arrow T, the movable piece 6 also moves in conjunction with this, and the movable engaging claw 8A disengages from the engaged rail. The recess 14 is not always necessary.

[0008]

According to the present invention, the movable plate connected to the movable piece having the movable engaging claw is protruded by penetrating the side wall surface (the side not contacting the thermal overload relay) of the base, and projecting the same. By inserting the tip of the driver tool into the pushing hole provided in the above part and pushing it, the movable piece moves and the movable engaging claw can be removed from the rail.Therefore, between the electromagnetic contactor and the thermal overload relay. The gap between can be narrowed.

[Brief description of drawings]

FIG. 1 is a plan view of a base which is an embodiment of the present invention.

2A is a sectional view taken along the line RR in FIG. 1, and FIG. 2B is an operation explanatory view in which a driver tool is inserted into FIG.

FIG. 3 (A) is a perspective view of a portion of FIG. 1 and FIG.
(B) is a perspective view of a portion viewed from an arrow B in FIG. 1.

FIG. 4 is a side view of the electromagnetic switch.

5A is a plan view seen from the arrow P in FIG. 4, and FIG.
Q-Q arrow sectional view

FIG. 6 is a plan view of a conventional base.

FIG. 7 is a sectional view taken along the line RR of FIG.

FIG. 8 is a perspective view of a portion viewed from an arrow C in FIG.

FIG. 9 is a plan view showing a state where two electromagnetic switches are arranged side by side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electromagnetic contactor 2 Thermal overload relay 3 Base 3A Side wall surface 3B Side wall surface 4 Cut line 5 Strip piece 6 Movable piece 7 Pull hole 8A Movable engaging claw 8B Fixed engaging claw 9 Leg 10 Engaging projecting piece 11 Movable Plate 12 Push-in hole 14 Recess

Claims (3)

[Claims] 1. An electromagnetic switch in which an electromagnetic contactor and a thermal overload relay are connected and combined so that the base of the electromagnetic contactor is mounted on a rail, which is adjacent to the thermal overload relay in the base. Form two strips on the side wall surface to form a strip piece, attach a movable piece orthogonal to the tip of this strip piece, and provide a rail mounting movable engaging claw at the tip of the inside part of the base of this movable piece. A movable piece inside the base, wherein a pull hole is provided at the tip on the outside of the base, a leg portion is provided on the side wall surface facing the side wall surface, and a fixed engaging claw for rail mounting is provided inside the leg portion. An electromagnetic switch, characterized in that an engaging projection piece is provided on the surface of, and a strip-shaped movable plate that engages with the engagement projection piece is projected through the side wall surface of the base on the leg side. 2. The electromagnetic opening / closing method according to claim 1, wherein an inverted U-shaped movable plate retainer is provided on the bottom surface of the base, and the movable plate is passed through and held by the movable plate retainer. vessel. 3. The pressing member according to claim 1, wherein a pushing hole is provided at a portion where the movable plate penetrates through the side wall surface of the base, and a concave portion is provided on a surface of the leg portion facing the pushing hole. An electromagnetic switch characterized by.