JPH0648805Y2 - Movable piece mounting structure of electromagnetic operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a structure for mounting a movable piece in an electromagnetic operating device that presses various elements by utilizing the force of the movable piece that is operated by the attraction force of a solenoid. .

(Prior Art) In the related art shown in FIGS. 3 to 5, a solenoid 2 is fixed to a vertical portion 1a of a main body 1 having a side surface of a right angle, and a solenoid 2 opposite to the vertical portion 1a. The iron core 3 is projected on the front surface of the. In addition, the horizontal portion of the main body 1
A spring stopper 4 is formed by cutting and raising the central portion of 1b, and claw pieces 5 are formed on both sides of the tip of the horizontal portion 1b. The claw piece 5 is formed with a notch portion 6 that is open on the side surfaces facing each other.

The movable piece 7 attached to the main body 1 has a pressing portion 7a formed at a right angle on the lower side thereof and a stopper 7b protruding on the upper side opposite to the pressing portion 7a.
A spring stopper 7c is formed at a central position on the upper side of the movable piece 7. Further, notches 8 are formed on both sides of the movable piece 7.

Further, the distance L between the bottoms of the cutouts 8 is made slightly smaller than the distance 1 between the inner sides of the claws 5 of the main body 1, and the above-mentioned claws 5 are inserted into the cutouts 8 to As shown in the figure, the main body 1 and the movable piece 7 are assembled.

Now, after inserting the claw piece 5 into the cutout portion 8 of the main body 1, the spring member 9 shown in FIG. 5 is inserted into the cutout portion 6 formed in the claw piece 5.
To prevent the movable piece 7 from coming off the main body 1.

Then, the spring 10 is bridged over the spring stoppers 4 and 7c formed on the main body 1 and the movable piece 7, and normally the movable piece 7 is maintained at the position shown by the chain line in FIG.

When the solenoid 2 is excited in the above state, the movable piece 7 is attracted to the iron core 3 and moves to the position shown by the solid line in FIG. Movable piece 7
By moving to the solid line position, the pressing portion 7a presses a predetermined element. Then, when the solenoid 2 is de-energized, the action of the spring 10 causes the movable piece 7 to move.
Returns to the position shown by the chain line in FIG.

(Problems to be solved by the present invention) In the conventional mounting structure as described above, the spring member 9 is used in order to prevent the movable piece 7 from rattling. Therefore, the spring member 9 is assembled. There was a problem that the work became complicated.

Further, depending on the frequency of the movable piece 7, the spring member 9 also vibrates and produces a strange noise.

Furthermore, the movable piece 7 cannot be prevented from swinging in the direction of arrow 11 in FIG. That is, the movement of the movable piece 7 is restricted by the spring member 9. However, the movement of the movable piece 7 in the direction of the arrow 11 cannot be completely prevented by only that, and therefore the movable piece inevitably shakes.

If the swing of the movable piece 7 in the direction of the arrow 11 cannot be prevented in this way, the following problems occur.

First of all, if the movable piece 7 largely shakes in the direction of arrow 11 as described above, for example, the fulcrum portion 1c of the main body 1 and the movable piece 7 may be separated from each other. If the two are separated in this way, there is a problem that the attraction force of the solenoid 2 is extremely reduced due to the relationship between the lines of magnetic force.

Secondly, when the movable piece 7 swings to the left and right, the pressing portion 7a does not move accurately. Moreover, since the movable piece 7 comes into contact with the iron core 3 obliquely, the solenoid 2
There is a problem that the suction power of is reduced.

Thirdly, in the case of using the double-headed movable piece 7 in which the pressing portion 7a is bifurcated, if the movable piece 7 swings in the direction of the arrow 11 as described above, the stroke of one of the pressing portions 7a Or the pressing force of the movable piece 7 is not accurately transmitted.

Fourthly, when the movable piece 7 swings as described above, the movable piece 7 may come off the main body 1.

In consideration of the above problems, for example, the structure shown in FIG. 6 has been conventionally known.

In the mounting structure shown in FIG. 6, a pair of claw pieces 5 are formed at the tip of the horizontal portion 1b of the main body 1, which is described in the above
This is similar to the case of FIG.

However, in the case of FIG. 6, the claw piece 5 of the horizontal portion 1b is
This is different from the above in that the stopper piece 12 which is another member is superposed on the above. That is, the stopper piece 12 has a pair of claw pieces 12a formed at the tip thereof and a protrusion 12b formed inside the claw piece 12a. And this stop piece 12
Although a pair of holes 13 and 14 are formed in this, the main body 1 side is also formed with a screw hole 15 and a convex portion 16 corresponding to these holes 13 and 14.

Then, in this case, the hole 14 of the stopper piece 12 is aligned with the convex portion 16 of the main body 1 and the stopper piece 12 is temporarily fixed to the main body 1. Then, while rotating the movable piece 7 in the direction of the arrow 11, the movable piece 7 is positioned inside the protrusion 12b.
When the movable piece 7 is positioned inside the protrusion 12b in this manner, the stopper piece 12 is firmly fixed to the main body 1 with the bolt 17.

By doing so, the deflection of the movable piece 7 is considerably prevented as compared with the case of FIGS. 3 to 5, but it is not yet perfect. Moreover, in the case of FIG. 6, there is a problem that the work efficiency is extremely deteriorated because the work of assembling the stopper piece 12 is added.

It is an object of the present invention to provide a mounting structure in which the assembling work is very simple and the backlash of the movable piece can be suppressed to a minimum.

(Means for Solving Problems) In this invention, a movable piece is attached to a body holding a solenoid, and the solenoid is excited to attract the movable piece.
It is premised on an electromagnetic operating device configured to return the movable piece to its original position by spring force when it is not excited.

Based on the above-mentioned device, the present invention forms notches formed on both sides of the movable piece and both sides of the tip of the main body, and the distance l between the tips is greater than the distance L between the bottoms of the notches. And a pair of claw pieces that are set to a large size, and is characterized in that both claw pieces are caulked inward while the claw pieces are inserted into the cutout portions.

(Operation of the present invention) Since the present invention is configured as described above, the movable piece is attached to the main body by positioning the movable piece between the claw pieces of the main body and then caulking the claw pieces. .

(Effect of the present invention) According to the mounting structure of the present invention, it is not necessary to use the spring member or the stopper piece, so that the number of assembling steps is reduced.

Moreover, since the movable piece is firmly attached to the main body, the swing of the movable piece can be suppressed to a minimum, and the movable piece does not accidentally come off from the main body.

(Embodiment of the Present Invention) FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1 is a plan view of a main body 1, and FIG. 2 is a rear view of a movable piece 7. The parts other than the configuration shown in FIG. 2 are the same as the conventional one.

In this embodiment, the projection 18a is formed on the inner side of the tips of the pair of claw pieces 18 formed on the horizontal portion 1b of the main body 1, and both claw pieces 18 are expanded outward.

Further, the movable piece 7 is formed with the notch portion 8 as in the conventional case, but the distance L between the bottom portions of the notch portion 8 is the distance between the protrusions 18a of the expanded claw piece 18. It is slightly smaller than l.

Next, a method of assembling this electromagnetic operating device will be described.

The movable piece 7 is inserted between the claw pieces 18 so that the claw piece 18 is passed through the cutout portion 8 of the movable piece 7. After that, if the expanded claw piece 18 is bent inward and is crimped so as to be straight, the claw piece 18 enters the cutout portion 8, and therefore the projection 18a formed on the claw piece 18 is formed. The movable piece 7 is pressed by.

Therefore, it is possible to prevent the movable piece 7 from coming off the main body 1 and to suppress the left and right rattling to the minimum.

Reference numeral 19 in the drawing is an escape groove formed in the base of the claw piece 18 for facilitating the crimping of the claw piece 18.

As described above, the left and right rattling of the movable piece 18 can be minimized, so that the stroke and the like of the pressing portion of the movable piece 18 can be accurately managed.

[Brief description of drawings]

FIGS. 1 and 2 show an embodiment of the present invention.
The figure is a plan view of the main body, FIG. 2 is a rear view of the movable piece, and FIGS.
FIG. 3 shows a conventional example, FIG. 3 is a side view, FIG. 4 is a perspective view of a main body and a movable piece with a solenoid removed, FIG. 5 is a rear view of the movable piece, and FIG. It is a perspective view of the principal part which shows a prior art example. 1 ... Main body, 2 ... Solenoid, 7 ... Movable piece, 8 ...
Notch, 18 ... claw piece.

Claims (1)

[Scope of utility model registration request] 1. A movable piece is attached to a main body holding a solenoid, and the solenoid is excited to attract the movable piece.
In the electromagnetic operating device configured to return the movable piece to the original position by the spring force when it is de-excited, the notch portion formed on both sides of the movable piece and the tip end of the main body are formed.
A pair of claw pieces in which the distance l between the tips is set to be larger than the distance L between the bottoms of the cutout portions is provided, and the claw pieces are inserted into the cutout portions, and both claw pieces are caulked inside. The movable piece mounting structure of the electromagnetic operating device.