JPS6144412A - Polarized electromagnet device - Google Patents

Abstract

PURPOSE:To obtain a smaller noise magnet by providing an electromagnetic coil outside of a cylindrical coil frame made of a non-magnetic material, permanent magnets magnetized in the radial direction on both sides of the coil and a projected elastic material inserted in a fixed iron core which faces to a movable iron core moving within the coil frame. CONSTITUTION:An electromagnetic coil 22 enveloped with flanges 31 and 32 is wound at the center of the outside of a cylindrical coil frame 26 made of a non- magnetic material, a ring magnet piece 34 is provided on one side of the coil 22 and a ring permanent magnet piece 23a magnetized in the radial direction is also provided. A similar permanent magnet piece 23b facing to the piece 23a is also provided on the opposite side of the coil 22 and a cylindrical movable iron core 21 is inserted in the frame 26. A projected screw 37 is inserted in the iron core 21, the outside of the screw is enveloped with an elastic rubber material 24a, a fixed iron core 42 facing to the iron core 21 is provided and an elastic material 24b screwed at the center of the iron core 42 is projected toward the iron core 21. In this way, the iron core 21 collides with the elastic material 24b and is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a movable iron core as a moving body by interposing a permanent magnet piece in a magnetic circuit and attenuating the magnetic flux of an electromagnetic coil by the magnetic flux of this water magnet piece. It is possible to transfer the data back and forth! This invention relates to a polarized type 'g11Jji stone device which is designed to reduce the operating noise of the 1i11 iron core.

BACKGROUND TECHNOLOGY Type A prior art is as shown in Figure 6.
9 exists. In this prior art, a muffling solenoid 11i has a stepped tapered convex movable core 2 and a concave fixed core 3 having a corresponding shape. Nine thin grooves 4 of an appropriate depth are formed around the entire circumference of the stepped portion at the tip of the ## possible iron core 2, and a ring-shaped sound deadening material 5 or 41 such as a rubber washer is inserted into the thin grooves 4! It will be worn.

When the coil 6 is energized and the iron core 2 is displaced in the direction in which the tip 2a of the iron core 2 approaches the recess 3a of the fixed iron core 3 as shown in FIG. Collision with inner surface 3bK. Therefore, #the impact sound is absorbed and buffered by the sound deadening material 5.

Problem to be Solved by the Invention In the prior art described above, the thickness of the sound deadening material 5 is so thin that a sufficient sound deadening function cannot be achieved. Therefore, if the thickness of the sound deadening material 5 is kept sufficiently Kffi in order to exhibit its f-damping function,
There was a problem that the holding power was insufficient.

The purpose of the present invention is to solve the above-mentioned technical burden and to
It is an object of the present invention to provide a polarized electromagnetic device that reduces body operating noise, has a holding force during operation, and has a permanent magnet piece (thus, has a bistable self-holding function).

The present invention includes an electromagnetic coil, a permanent magnet piece disposed at each end of the electromagnetic coil and magnetized in the radial direction, and a permanent magnet piece inserted through the coil and the permanent magnet piece to be displaced in the axial direction. The movable body is made of a ferromagnetic material, and the movable body is displaceable in two positions depending on the direction of magnetic flow of the permanent magnet piece, and further includes an elastic body facing both ends of the movable body. This is a polarized electromagnetic device characterized by the fact that a body is placed therein.

According to the present invention, by switching the excitation current of the electromagnetic coil, magnetic fluxes are superimposed and attenuated each other in the magnetic gap formed between the moving body and each permanent magnet piece, and the moving body moves. Then, the movable body collides with elastic bodies provided at both ends of the movable body and stops. At this time, since the impact of the moving body is absorbed and relaxed by the elastic body, the operating noise of the moving body is reduced as much as possible.

Embodiment FIG. 1 is a sectional view of an embodiment of an electromagnetic device according to the present invention, and FIG. 2 is an exploded perspective view thereof.

This electromagnet device 20 has, as basic components, a movable J iron core 21 as a movable body movable in the axial direction, an electromagnetic coil 22 that excites the movable iron core 21, and an electromagnetic coil 2.
Permanent magnet pieces 23a and 23b arranged on both end sides of 2,
Elastic bodies 24a are arranged facing both ends of the writable vJ iron core 21 in the moving direction.

24b, and a pair of upper and lower outer yokes 25 that surround the permanent magnet pieces 23a, 23b and the electromagnetic coil 22.
a, 25b. The movable iron core 21 has a cylindrical shape and is made of a non-magnetic material.

The truncated core 21 is disposed within an insertion hole 27 formed in the coil frame 26 so as to be able to reciprocate. An elastic body 24a made of rubber or the like is disposed on the left side of the #1 scissors center 21, and this elastic body 24a is fixed to the inner peripheral surface of the insertion hole 27 of the coil frame 26. Also, the right side V in FIG. 1 of the core 21
An elastic body 24b made of CVi, rubber, or the like is disposed, and the elastic body 24b is inserted through the insertion hole 43 of the fixed core 42.

The coil frame 26 is connected to the cylindrical portion 2 as shown in FIG.
8 and the outer circumferential surface of the cylindrical portion 28 (consisting of the five 7 flange portions 29, 30, 31, 32, and 33 formed).
The flange portion 32 and the seven-kunge portion 33 are formed in this order from one end of the cylindrical portion 28 to the other end. A permanent magnet piece 23a is interposed between the seven flange parts 29 and 30, and a magnetic pole piece 34 is interposed between the seven flange parts 30 and 31.
is interposed therebetween, and an electromagnetic coil 22 is wound between the seven flange portions 31 and 32. In addition, 7 lunges 32.3
Another permanent magnet piece 23b is interposed between the three.

These permanent magnet pieces 23a, magnetic pole pieces 34, electromagnetic coils 22
and an outer yoke 25a surrounding the permanent magnet piece 23b,
25b is arranged. Side plates 35 and 36 made of non-magnetic material are provided at both ends of the outer yokes 25a and 25b. side plate 35f'i, a pair of left and right side parts 35a,
35b and a connection 135 connecting between the side parts 35a and 35b.
c. The connecting portion 35cK is formed with an insertion hole 35d through which the output shaft 37 is inserted.

Further, a pair of upper and lower locking protrusions 3Se are formed on the connecting portion 35c. The other side plate 36 also has the same configuration as the side plate 35, and has side parts 36a, 36b and a connecting part 36c.
It consists of The connecting portion 36cK is formed with an insertion hole 36d and a pair of upper and lower locking protrusions @36e. The outer yokes 25a and 25b have the locking protrusions 35e.
, 36e are respectively formed, and the engaging protrusions 35e and 36e described in IIQ are respectively engaged and caulked into these engaging recesses 38 and 39, and thus the outer yoke 25a and 25b are fixed to side plates 35 and 36.

Output shaft 37 side plate 35 insertion hole 35d and elastic body 24
The threads 37a of the output shaft 37 are inserted through the respective insertion holes 40 of the output shaft 37. The screw holes 21aK of the iron core 21 are screwed together and fixed. The small diameter portion 41 of the KVi elastic body 24b is inserted through the insertion hole 36d of the side plate 36 and fixed. This elastic body 24b#'i is in the insertion hole 43 of the fixed iron core 42,
The distal end portion 44 is configured to protrude beyond the left side surface 42a of the fixed iron core 42. Therefore, as will be described later, when the movable core 21 moves in the direction of the arrow W, YES! I
When the right end surface 21b of the I iron core 21 collides with the elastic body 24b1C, the elastic body 24bK absorbs and alleviates the noise.

The permanent magnet piece 23a is magnetized in a direction perpendicular to the axial direction of the iron core 21. That is, one north pole of the permanent magnet piece 23a is in contact with the outer yoke 25aK, and the other south pole faces the movable iron core 21 via the elastic body 24a. The other permanent magnet piece 23b is also magnetized in a direction perpendicular to the direction of movement of the centroid 21, and one N pole is in contact with the outer yokes 25a and 25b, and the other sVi
is facing the fixed iron core 42. As is clear from FIG. 2, the magnetic pole piece 34 is fixed to the outer yokes 25a, 25b and is magnetically coupled to the outer yokes 25a, 25b and the epicenter 21t.

An electromagnetic device with such a configuration! In 20,
As is clear from Fig. 11, the permanent magnet piece 23a and the movable iron core 2
A magnetic gap A is formed between the two. Also, the magnetic pole piece 34
A magnetic air @B is formed between VC and the movable iron core 21.

Furthermore, a magnetic gap C is formed between the fixed iron core 42 and the flexible iron core 21.

FIGS. 3 and 4 are diagrams for explaining the young crop-like port of the electromagnetic bag V120. In Fig. 3, permanent magnet piece 2
Magnetic flux -11 of 3a and magnetic flux -2 of Hyaku magnet piece 23b flow through the following path. That is, the magnetic flux is -1 Fi Hyokyu's N pole of the magnetic piece 23 → the outer yoke 25a.

25b - Magnetic pole piece 34 - Magnetic air @ B - Town # Iron core 21 - Magnetic air gap A - Follow the path of the S pole of the permanent magnet piece 23a.

Encased magnetic flux - N pole of 2-piece permanent magnet piece 23b → outer yoke 25
a, 25b-magnetic pole piece 34a-=i air gap B-possible vJ shinshin 21-magnetic air gap C-fixed iron core 42-permanent magnet piece 23b
Follow the path of the S pole. When the electromagnetic coil 22 is not excited, as shown in FIG. 3, the dJ iron core 21 is maintained in a stopped state by the magnetic attraction force caused by the magnetic flux of the magnetic gap A. When the magnetic coil 22 is excited in this state, magnetic fluxes -3 and -4 form a magnetic circuit shown by the broken line in FIG. Magnetic flux -3 is possible! gII & core 21 - magnetic gap C - fixed centroid 42 - permanent magnet piece 23b - outer yoke 2
5a, 25b - magnetic pole piece 34 - magnetic air gap F. Also, magnetic flux - 4Vi movable iron core 21 - magnetic air gap C - fixed iron core 42 -
Permanent magnet piece 23b - outer yoke 2'5a, 25b - permanent magnet piece 23a - magnetic gap A. Therefore, in the magnetic gap A, the magnetic flux -1 of the permanent magnet piece 23 and the magnetic flux -4 of the electromagnetic coil 22 attenuate each other, and in the magnetic gap C, the magnetic flux -3-4 of the electromagnetic coil 22 and the magnetic flux -2 of the permanent magnet piece 23b are superimposed. Each other. Therefore, the movable core 21 moves in the direction of the arrow W. Then, as shown in FIG.
movement is stopped. At this time, the #stroke of the movable iron core 21 is absorbed and relaxed by the elastic body 24b and stops, so that the small sound of the movable iron core 21 is reduced as much as possible.

4E4 Even if the electromagnetic coil 22 is demagnetized with the i5T auxiliary cooking core 21 stopped as shown in the figure, it is possible due to the magnetic attraction force due to the magnetic flux -2 of the permanent magnet piece 23b in the magnetic air 'fiC! #I iron core 21 is maintained in this state.

After that, when the electromagnetic coil 22 is reversely excited, the magnetic flux of the electromagnetic coil forms a magnetic flux path in the opposite direction to the above-mentioned -3 and -4, overlaps each other in the magnetic gap A, and decreases in the magnetic gap @C, so it is movable. The iron core 21 begins to move in the direction opposite to the direction of the arrow W, and is again stopped and held in the state shown in FIG. In this way, the flexible IJ iron core 21 moves in the opposite direction and its left end surface 21
When C comes into contact with the end surface of the elastic body 24a, the movable iron core 21
is absorbed, relaxed, and then stopped, so the operating noise is reduced as much as possible.

FIG. 5 is a sectional view of another embodiment of the electromagnet SIc.

This electromagnetic device 80 is the electromagnetic bag v! 20, and corresponding parts are given the same reference numerals.

What should be noted is that the outer yoke 25a in the above embodiment,
25b and the magnetic pole piece 34K, a pair of upper and lower first yokes 81.82 and a pair of upper and lower second yokes 83.84 are used. The first yoke 81 includes a horizontal piece 81a and a horizontal piece 81a.
1a (consisting of a side piece 81b extending vertically from the D end.The second yoke 83 also has a similar configuration and consists of a horizontal piece 83a and a side piece 83b.The first yoke The horizontal piece 81a of 81 is arranged outside the permanent magnet piece 23a and is in contact with the N pole of the permanent magnet piece 23a.

Further, the horizontal piece 83a of the second yoke 83 is the permanent magnet piece 23b.
The outer IC is in contact with the N pole of the permanent magnet piece 23b. The side piece 81b of the first yoke 81 and the side piece 83b of the second yoke 83 are in contact with each other, and the coil frame 26 is
It is located between Ranji District 30 and 31. As a result, the permanent magnet piece 23a is transferred to the movable iron core 2 via the @l yoke 81.
The permanent magnet piece 23b is magnetically coupled to the movable iron core 21 via the second yoke 83.

The first yoke 82 and the second yoke 84 also have similar configurations, and corresponding portions VC are given suffixes a and b. The permanent magnet piece 23a is magnetically coupled to the movable iron core 21 via the first yoke 82, and the permanent magnet piece 23b is magnetically coupled to the movable iron core 21 via the second yoke 84. The operating state of the electromagnetic device 80 having such a configuration is similar to that of the electromagnetic bag [120] described above.

Effects As described above, according to the present invention, the operating noise of the moving body is reduced as much as possible, and moreover, it is possible to maintain a holding force of 1 during operation and to exhibit a bistable self-holding function.

[Brief explanation of drawings]

Figure 1 shows 11! of the present invention! A cross-sectional view of an example of a magnet device,
Figure 2 is an exploded perspective view of the same, Figures 3 and 4 are Fi1!
FIG. 5 is a cross-sectional view of another embodiment of the electromagnetic device, and FIG. 6 is a cross-sectional view of a typical prior art. 20.80...Electromagnet device, 21...Movable iron core, 22
...Electromagnetic coil, 23a, 23b...Permanent magnet piece,
24a, 24b-elastic body, 25a, 25b, 8
1゜82.83.84... Yoke, 26... Coil frame, 34... Magnetic pole piece, 42... Fixed iron core, 35.36
... Side panel agent Patent attorney Kei Nishi Part 6 Figure 6 procedural amendment? (Method) % formula % 2. Name of the invention Polar electromagnet device 3. Relationship with the person making the amendment Applicant address name (583) Matsushita Electric Works Co., Ltd. Representative 4, Agent address Nishihonmachi, Nishi-ku, Osaka City 1-13-38 New Industrial Building Country Equipment EX 0525-5985 INTAP
T J International FAX G1l1 & GIl (06)53
8-G2□i? 6. The subject of the amendment and drawings 7. The details of the amendment and the engraving of the original drawings (no changes to the contents). that's all

Claims (1)

[Claims] An electromagnetic coil; a permanent magnet piece disposed on both ends of the electromagnetic coil and magnetized in the radial direction; a moving body made of a magnetic material, the moving body is movable in two positions depending on the direction of magnetic flow of the permanent magnet piece, and further elastic bodies are disposed facing both ends of the moving body. A polarized electromagnet device characterized by: