JPS5928593Y2 - Retaining device for bimetal mounting body - Google Patents

Description

[Detailed Description of the Invention] This new proposal relates to an improvement in the structure for rotatably holding a bimetal mounting body within the case of an electric appliance using bimetal.

For example, in bimetallic relays, particularly multipole types, the bimetallic support is rotatably mounted in the case in order to adjust the operating point.

This type of conventional configuration (bimetallic relay 920III
/100), a long flat bimetallic support is used, and the end on which the bimetal is attached is provided with a hole through which the cylindrical rivet forming the axial support of the attachment is inserted. It is worn.

The rivet passes through the synthetic resin mounting wall, and rotatably holds the mounting body in the case via the disk, toothed plate, and spring washer.

Therefore, in this configuration, a large space is required in the case to accommodate the rivet and disc assembly, but this is because the assembly tool is inserted into this part after adjustment, and the rivet is firmly secured. This is because it has to be tightened.

Electrically, electrical continuity is established by passing this conductive cylindrical rivet through the partition wall between the mounting body with bimetal and other opening/closing mechanism parts, so a voltage is induced through the synthetic resin partition wall. There is great danger.

Furthermore, in this configuration, the other end of the bimetal mounting body is held by another rivet through an arc-shaped elongated hole centered on the above-mentioned pivot point, so the rotation of the bimetal mounting body is prevented by a tool. This requires a very complicated operation, and it is impossible to adjust the relay while it is in operation.

This device has a simpler structure and is easier to assemble than conventional devices, and also prevents the formation of a voltage induced path through the synthetic resin wall, especially in the axial neck area of the bimetal mounting body. This provides an easy-to-use configuration.

That is, according to this invention, the mounting body has a fixing part that can be rotated and adjusted by a long hole and a rivet, and a bifurcated pivot support that is rotatably supported in a recess in the case part on the opposite side. shall be kept in the case by.

Therefore, the above object can be satisfactorily achieved.

When implementing this idea, in order to rotatably support this mounting body on the case part without a tightening device, the lower end of the mounting body is formed into a bifurcated shape, and the case part is attached in the direction of the plate surface of the bimetal mounting body. It is preferable to provide a pocket which can be easily rotated but cannot be moved in a direction perpendicular to the pocket, into which the disc-shaped end of the mounting body is inserted.

That is, a more precise guidance of the rotation of the mounting body is thereby possible.

Furthermore, by providing the disc-shaped end with a groove, this end can be elastically adhered to the wall of the pocket.

Furthermore, in order to facilitate elastic insertion of this disk-shaped end into the pocket, it is preferable to round down the corners of the insertion opening of the pocket to form a funnel-shaped guide.

Next, this invention will be explained in detail with reference to the drawings.

In the figure, reference numeral 1 denotes a bimetal mounting body in the form of a plate, which has a curved mounting piece 2, so that the bimetal 3 can be placed on a surface displaced by 90 degrees with respect to the surface of the mounting body 1. is maintained.

The connecting conductor for heating this bimetal 3 is 4.
5.

An opening/closing mechanism (not shown) is operated by bending the free end 6 of the bimetal, and the direction of the bending is shown by an arrow in FIG.

In order to adjust the bimetal 3, the bimetal mounting body 1 is supported by a support bearing 8 against the case part 7 at the lower end of its flat surface, and is attached to the case part 7 by a rivet 9 at the upper part. .

The rivet 9 passes through the arc-shaped elongated hole 10 of the mounting body 1 and is attached to the case portion 7, and in the support bearing 8, the disc-shaped end portion 11 of the mounting body 1 is attached to the case portion 7. The pocket 12 is fitted into a pocket 12 having a width approximately equal to the thickness of the end portion 11.

Therefore, since the end portion 11 is circular in this way, by moving the rivet 9 into the elongated hole 10, the end portion 11 rotates within the pocket 12, and the mounting body can be moved and adjusted properly. I can do it.

At this time, the disc-shaped end 11 is firmly adhered to the wall surface 13 of the pocket 12, and therefore, this end is adhered elastically within the pocket, and rotation is achieved without play. In order to do this, it is preferable that the end portion 11 itself be made slightly larger than the pocket 12 and that the split groove 14 be formed therein.

Furthermore, by cutting down the corners of the insertion opening of the pocket 12 to form a funnel-shaped guide portion 15, the operation of inserting the mounting body 1 into the pocket 12 becomes easier.

Therefore, when assembling the bimetal mounting body, it is only necessary to insert the disc-shaped end 11 into the pocket, adjust it appropriately, and then fix the position by tightening the rivet 9.

Assembly is therefore achieved by a simple plug-in arrangement, which greatly simplifies production.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of one embodiment of the device according to this invention, and FIG. 2 is a partially cutaway front view thereof. In the figure, 1 is the bimetal mounting body, 2 is its mounting piece, and 3
is a bimetal, 4 and 5 are connecting conductors, 6 is the free end of the bimetal, 7 is a case part, 8 is a support bearing for the mounting body 1, 9
10 is a rivet, 10 is a long hole, 11 is a disc-shaped end of the mounting body 1, and 12 is a pocket of the case portion 7 that accommodates it.

Claims (1)

[Scope of utility model registration request] In the case of an electric appliance that uses bimetal, in which a bimetal mounting body is rotatably held within the case, the mounting body has a fixed part that can be rotated and is made of a long hole and a rivet, and the opposite side thereof. A holding device for a bimetal mounting body, characterized in that it is held in a case by a bifurcated disc-shaped shaft support that is rotatably and elastically attached to a recess in the case portion at the end.