JPS5947445B2 - AC electromagnet shaded coil device - Google Patents

Description

[Detailed Description of the Invention] A shaded coil device for an AC electromagnet of a conventional electromagnetic contactor is
Both sides of the quadrilateral shading coil are press-fitted into a pair of grooves provided on the magnetic pole surface of the electromagnetic core, or both sides of the quadrilateral shading coil are press-fitted into a pair of grooves provided on the magnetic pole surface of the electromagnetic core. I installed it and brazed the shaded coil to the electromagnetic core.

However, when a quadrilateral shading coil is press-fitted into a pair of grooves, when another core is attracted to the magnetic pole face of the electromagnetic core, the impact force causes the sides of the quadrilateral shading coil to There is a drawback that excessive stress is generated at each end, causing the ends to easily break, and when brazing the shaded coil to the electromagnetic core, the brazing process is troublesome.
It had the disadvantage of high cost. The present invention is intended to eliminate the above-mentioned drawbacks of the conventional art, and the embodiments of the present invention will be described below with reference to the drawings. 1 is an electromagnetic core made of laminated iron plates, and the magnetic pole face and the magnetic pole face or the magnetic pole face are By inserting both sides 3a, 3'a of the quadrilateral shading coil 3 together with a rubber or other elastic sheet 9 into a pair of grooves 2, 2' formed in the vicinity, a part of the magnetic pole surface is shaped into a quadrilateral shading. It is made to penetrate into the coil 3. 4 and 4' are spring pieces installed on both sides of the electromagnetic core 1, and the bent pieces 5 and 5' bent at their free ends have the pair of grooves 2 and 2' and the quadrilateral shading coil. An elastic sheet 9 is interposed between the inner surfaces of both sides 3a and 3'a of the rectangular shading coil 3, and both end sides 3b and 3'b of the quadrilateral shading coil 3 are elastically pressed and locked.

When attaching the spring pieces 4, 4' to the electromagnetic core 1,
As shown in FIG. 2, this may be done by passing through holes at the proximal ends of the springs 4, 4' at both ends of the pin 6 that penetrates the electromagnetic core 1, and caulking both ends of the pin 6, as shown in FIG. Alternatively, the spring pieces 4, 4' may be formed by bending the spring pieces 4, 4' at both ends of the spring member 8 to be fitted into the fitting groove 7 provided on the end face of the electromagnetic core 1 on the side opposite to the magnetic pole face. As described above, the present invention provides elastic sheets 9 in the magnetic pole face of the electromagnetic core 1 and the pair of grooves 2, '2' formed on the magnetic pole face or in the vicinity of the magnetic pole face, as well as on both sides 3a, 3 of the quadrilateral shading coil 3. ' a is inserted into the quadrilateral shaded coil 3 through a part of the magnetic pole face, and the bent pieces 5 at the free ends of each of the spring pieces 4 and 4' are attached to both sides of the electromagnetic core 1. , 5', an elastic sheet 9 is interposed between the inner surfaces of the pair of grooves 2, 2' and both sides 3a, 3'a of the quadrilateral shading coil 3, and both ends of the quadrilateral shading coil 3 are interposed. Since the sides 3b and 3'b are elastically pressed and locked, the shading coil can be easily attached by simply locking the bent piece at the free end of the spring piece.
When another iron core is adsorbed to the magnetic pole surface of an electromagnetic iron core,
Since both end sides of the shading coil are locked to the bent pieces at the free end of the spring piece, the shading coil moves slightly toward the magnetic pole surface of the electromagnetic core, and excessive stress is not generated on both sides of the shading coil. The shaded coil will not be damaged, and furthermore, it has the effect of reducing minute vibrations of the laminated iron plates that make up the electromagnetic core when the electromagnetic core is excited, or minute vibrations of the shaded coil that accompany it.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view;
FIG. 2 is a side view, and FIG. 3 is a side view of a different embodiment of the invention. 1 is an electromagnetic core, 2, 2' is a groove, 3 is a shaded coil, 4,
4' is a spring piece, and 5 and 5' are bent pieces.

Claims (1)

[Claims] 1 By inserting the elastic sheet and both sides 3a and 3'a of the quadrilateral shading coil 3 into the pair of grooves 2 and 2' formed on the magnetic pole surface of the electromagnetic core 1 and the magnetic pole surface or near the magnetic pole surface, the four sides Spring pieces 4, 4' are attached to both sides of the electromagnetic core 1, passing through a part of the magnetic pole surface inside the shaped shading coil 3.
The pair of grooves 2, 2' and both sides 3a of the quadrilateral shading coil 3 are attached to the bent pieces 5, 5' at the free end of each of the above.
A shading coil device for an AC electromagnet, in which both end sides 3b, 3'b of the quadrilateral shading coil 3 are resiliently pressed and locked with an elastic sheet 9 interposed between the inner surface of the quadrilateral shading coil 3.