JP3226616U - Thin bipolar anti-phase stepping motor - Google Patents

Abstract

A thin bipolar anti-phase stepping motor is provided. The invention includes two primary sides and one secondary side. The primary sides face each other and the secondary sides are respectively provided between the primary sides, the primary permanent magnets 14 on the primary side form opposite poles, and the second permanent magnets 16 on the primary side have different polarities. To form the opposite. Thereby, the magnetic circuit on the primary side forms a right angle with the third direction Y. Since the first permanent magnets face the different poles and the second permanent magnets face the different poles, the magnetic circuit does not form magnetic flux along the first direction X on the secondary side. It is possible to reduce the thickness of the secondary side. [Selection diagram] Figure 1

Description

The present invention relates to a linear drive device, and more particularly to the disclosure of a novel structure of a thin bipolar anti-phase stepping motor.

The linear stepping motor is mainly composed of one primary side and one secondary side. Among them, the primary side has a coil provided around a fixed bracket, the permanent magnet is provided on the secondary side, the fixed bracket and the secondary side are provided adjacent to each other, and the fixed bracket and the secondary side, respectively. Providing multiple protruding teeth facing each other, a magnetic field is generated when an electric current passes through the coil, and the protruding teeth between the primary side and the secondary side are attracted or retracted from each other to generate a propulsive force. Side and secondary side move relative to each other.

In the known bipolar anti-phase stepping motor, twice the thrust is obtained mainly by combining the phases of the two linear stepping motors described above.

However, when the known bipolar anti-phase stepping motor is applied in practice, the following problems and drawbacks still exist. The known bipolar anti-phase stepping motor has two known sets of linear stepping motors, which are connected in parallel with their secondary sides back-to-back, and do not modify the function of the known linear stepping motor magnetic field, so that there is no magnetic saturation. There are restrictions. The thrust changes greatly due to the pushing of the magnetic field, and vibration occurs when the primary side and the secondary side move relative to each other. Therefore, the total volume of the known bipolar anti-phase stepping motor is twice that of the known stepping motor. And cannot be further reduced.

The main object of the present invention is to provide a thin bipolar anti-phase stepping motor. The technical problem to be solved is to create and overcome, aiming at a novel thin bipolar anti-phase stepping motor which is more ideal and more practical and has a thinner overall thickness.

Based on the above-mentioned object, the technical features to be solved by the present invention mainly include the thin bipolar anti-phase stepping motor of the present invention including two primary sides and one primary side configured by a magnetic induction member. That is. Among them, the respective primary sides are opposed to each other, and the secondary sides are respectively provided between the primary sides. Further, the primary side is provided adjacent to the secondary side so as to face each other, and the direction in which the primary side and the secondary side relatively move is referred to as a first direction, the second direction is orthogonal to the first direction, and the primary side is the second side. The third direction is orthogonal to the first direction and the second direction.

The primary side is mainly composed of a first magnetic field unit and a second magnetic field unit provided in the vicinity of the first direction, and the first magnetic field unit of the primary side opposes each other in the second direction with the secondary side interposed therebetween. The second magnetic field units on the primary side face each other in the second direction with the secondary side separated.

The first magnetic field unit includes a first exciting element and a first permanent magnet. Among them, the first exciting element is mainly composed of two fixing brackets adjacent to each other in the lateral direction, and the fixing bracket is composed of a silicon sheet. The first permanent magnet is sandwiched between fixed brackets, the fixed bracket and the first permanent magnet are arranged along the first direction, and the polarities of both sides of the first permanent magnet facing the first direction are different. To arrange.

The second magnetic field unit includes a second exciting element and a second permanent magnet. Among them, the second exciting element is mainly configured by arranging a coil around two fixing brackets adjacent in the lateral direction, and the fixing bracket is made of a silicon sheet. The second permanent magnet is sandwiched between the fixed brackets, the fixed bracket and the second permanent magnet are arranged along the first direction, and the polarities of both sides of the second permanent magnet facing the first direction are different. To arrange.

The first permanent magnet on the primary side and the second permanent magnet facing each other along the first direction form a facing of the same polarity.

The first permanent magnets arranged along the second direction form opposite poles facing each other, and the second permanent magnets arranged along the second direction form opposite poles facing each other.

The magnetic circuit formed on the primary side is orthogonal to the third direction.

The main effects and advantages of the present invention are that the first permanent magnets face the opposite poles and the second permanent magnets face the opposite poles, so that the magnetic circuit causes magnetic flux flow along the first direction on the secondary side. Since it is not formed, magnetic saturation on the secondary side is not formed, and the thickness can be reduced.

1 is a perspective view of a preferred embodiment of the present invention. 1 is a cross-sectional view of a preferred embodiment of the present invention. FIG. 3 is a diagram (No. 1) of magnetic flux lines according to a preferred embodiment of the present invention. FIG. 4 is a second diagram of magnetic flux lines according to a preferred embodiment of the present invention.

1 to 4, reference is made to a preferred embodiment of the thin bipolar anti-phase stepping motor of the present invention. However, these embodiments are merely for the purpose of explanation, and the scope of the present invention is not limited to these structures.

The preferred embodiment described above includes two primary sides 10 and one secondary side 20 composed of a magnetic induction member. Among them, the primary sides 10 face each other, and the secondary sides 20 are respectively provided between the primary sides. Furthermore, the primary side 10 is adjacently provided adjacent to the secondary side 20, respectively, and a direction in which the primary side 10 and the secondary side 20 relatively move is referred to as a first direction X, and a second direction Z and a first direction. X is orthogonal to each other, the primary side 10 is arranged along the second direction Z, and the third direction Y is orthogonal to the first direction X and the second direction Z, respectively.

The primary side 10 is mainly composed of a first magnetic field unit 11 and a second magnetic field unit 12 provided near the first direction X, and the first magnetic field unit 11 of the primary side 10 separates the secondary side 20. The second magnetic field units 12 on the primary side 10 face each other in the second direction Z, and the second magnetic field units 12 on the primary side 10 face each other in the second direction Z with the secondary side 20 therebetween.

The first magnetic field unit 11 includes a first excitation element 13 and a first permanent magnet 14. Among them, the first exciting element 13 is mainly composed of two fixing brackets 132 which are provided adjacent to each other in the lateral direction of the coil 131, and the fixing bracket 132 is composed of a silicon sheet. The first permanent magnet 14 is sandwiched between the fixed brackets 132, the fixed bracket 132 and the first permanent magnets 14 are arranged along the first direction X, and the first permanent magnets 14 are arranged in the first direction X. It is arranged so that the polarities on both sides facing each other are different.

The second magnetic field unit 12 includes a second excitation element 15 and a second permanent magnet 16. Among them, the second exciting element 15 is mainly composed of two fixing brackets 152 that are provided adjacent to each other in the lateral direction of the coil 151, and the fixing bracket 152 is composed of a silicon sheet. The second permanent magnet 16 is sandwiched between the fixed brackets 152, the fixed bracket 152 and the second permanent magnets 16 are arranged along the first direction X, and the second permanent magnets 16 are arranged in the first direction X. It is arranged so that the polarities on both sides toward each other are different.

The first permanent magnet 14 on the primary side 10 and the second permanent magnet 16 facing each other along the first direction X form the same pole facing each other, and the first permanent magnet 14 is disposed along the second direction Z. Form mutually opposite poles, and the second permanent magnets 16 arranged along the second direction Z form mutually opposite poles.

The thin bipolar anti-phase stepping motor provided by the present invention is based on the combination of the above-mentioned structures and technical features, and as shown in FIGS. 1 and 3, the coil 131 of the first excitation element 13 on the primary side 30 has a current. When passing through, the magnetic path formed by each coil 131 and the magnetic path formed by the first permanent magnet 14 are combined to form the magnetic circuit 32. The magnetic circuit 32 and the third direction Y Form an orthogonality. Since the first permanent magnets 14 have opposite poles from each other, the magnetic circuit 32 passes through the secondary side 20 along the second direction Z, and the fixed bracket 132 of the primary side 10 and complete coupling. It forms a circulation loop and does not form magnetic saturation on the secondary side 20.

Please refer to FIG. 1 and FIG. When a current flows through the coil 151 of the second excitation element 15 on the primary side 10, the magnetic path formed by the coil 151 and the magnetic path formed by the second permanent magnet 16 are combined to form the magnetic circuit 34. The magnetic circuit 34 is orthogonal to the third direction Y. The second permanent magnets 16 form opposite poles, and the magnetic circuit 34 passes through the secondary side 20 along the second direction Z to form a complete coupling circulation loop with the fixed bracket 152 of the primary side 10. Form. Similarly, no magnetic saturation is formed on the secondary side 20.

Since the magnetic circuits 32 and 34 are orthogonal to the third direction Y and the magnetic circuits 32 and 34 flow to the secondary side 20 along the second direction Z, the magnetic circuits 32 and 34 are arranged along the secondary side 20 along the second direction 20. Since the magnetic force is not moved in the one direction X, magnetic saturation is not formed on the secondary side 20. The thickness of the secondary side 20 along the second direction Z can be greatly reduced without being limited by magnetic saturation. When the known bipolar anti-phase stepping motor is applied, if the thickness of the secondary side of the known bipolar anti-phase stepping motor is TP2 and the fixed bracket thickness of the primary side is TP1, TP2≧1.2 TP1 must be satisfied. However, the phenomenon of magnetic field pressing due to magnetic saturation cannot be resolved. According to the present invention, the opposite poles of the first permanent magnet 14 are opposed to each other and the opposite poles of the second permanent magnet 16 are opposed to each other, so that the thickness of the secondary side 20 can eliminate the magnetic saturation limitation. When the thickness of the secondary side 20 is T2 and the thickness of the fixing brackets 132, 152 of the primary side 10 is T1, even if T2 is less than 1.2 T1, the magnetic field pressing force is maintained while maintaining the output characteristic of double power. Does not occur, the thrust does not change drastically, and it has the advantage of overall thinning.

Suffice it to say, by making the magnetic circuits 32, 34 orthogonal to the third direction Y, the dimensions in the third direction Y can be reduced as necessary in the present invention, which has an adverse effect on the magnetic circuits 32, 34. Does not bring Therefore, it is possible to narrow the overall structure in the third direction Y, reduce the overall volume, and reduce the weight.

Further, in the present embodiment, the primary side 10 is formed in the fixed brackets 132 and 152 so as to face the secondary side 20 by the first magnetic pole surface 17, and a plurality of fixed brackets 132 and 152 are provided on the first magnetic pole surface 17. First protrusion teeth 174 are formed, and a plurality of first tooth spaces 172 are formed between adjacent first protrusion teeth 174, and the first protrusion teeth 174 are adjacent to the secondary side 20 and face the first magnetic pole. Form surface 17.

The secondary side 20 forms the second magnetic pole surface 22 so as to face the first magnetic pole surface 17, and the second magnetic pole surface 22 is provided with a plurality of second tooth spaces 222. 224 are respectively formed between the second tooth spaces 222, and the second protruding teeth 224 form the second magnetic pole surface 22 facing the primary side 10 adjacent thereto.

10 primary side 11 1st magnetic field unit 12 2nd magnetic field unit 13 1st excitation element 131 coil 132 fixed bracket 14 1st permanent magnet 15 2nd excitation element 151 coil 152 fixed bracket 16 2nd permanent magnet 17 1st magnetic pole surface 172 1 tooth groove 174 first protruding tooth 20 secondary side 22 second magnetic pole surface 222 second tooth groove 224 second protruding tooth 32 magnetic circuit 34 magnetic circuit X first direction Y third direction Z second direction

The first magnetic field unit includes a first exciting element and a first permanent magnet. Among them, the first exciting element is mainly composed of two first fixing brackets adjacent to each other in the lateral direction, and the first fixing bracket is composed of a silicon sheet. A first permanent magnet and sandwiched between the first fixing bracket, a first fixing bracket, and a first permanent magnet disposed along the first direction, and, on both sides where the first permanent magnets toward the first direction Arrange so that the polarities are different.

The second magnetic field unit includes a second exciting element and a second permanent magnet. Among them, the second exciting element is mainly configured by arranging a coil around two second fixing brackets adjacent in the lateral direction, and the second fixing bracket is made of a silicon sheet. The second permanent magnet is sandwiched between the second fixing bracket, a second fixing bracket, and a second permanent magnet disposed along the first direction, and, on both sides the second permanent magnet toward the first direction Arrange so that the polarities are different.

The first magnetic field unit 11 includes a first excitation element 13 and a first permanent magnet 14. Among them, the first exciting element 13 is mainly composed of two fixing brackets (first fixing brackets) 132 which are provided adjacent to each other in the lateral direction of the coil 131, and the fixing bracket 132 is made of a silicon sheet. The first permanent magnet 14 is sandwiched between the fixed brackets 132, the fixed bracket 132 and the first permanent magnets 14 are arranged along the first direction X, and the first permanent magnets 14 are arranged in the first direction X. It is arranged so that the polarities on both sides facing each other are different.

The second magnetic field unit 12 includes a second excitation element 15 and a second permanent magnet 16. Among them, the second exciting element 15 is mainly composed of two fixing brackets (second fixing brackets) 152 which are provided adjacent to each other in the lateral direction of the coil 151, and the fixing bracket 152 is made of a silicon sheet. The second permanent magnet 16 is sandwiched between the fixed brackets 152, the fixed bracket 152 and the second permanent magnets 16 are arranged along the first direction X, and the second permanent magnets 16 are arranged in the first direction X. It is arranged so that the polarities on both sides toward each other are different.

10 Primary Side 11 First Magnetic Field Unit 12 Second Magnetic Field Unit 13 First Excitation Element 131 Coil 132 Fixed Bracket (First Fixed Bracket)
14 1st permanent magnet 15 2nd excitation element 151 Coil 152 Fixed bracket (2nd fixed bracket)
16 2nd permanent magnet 17 1st magnetic pole surface 172 1st tooth groove 174 1st protrusion tooth 20 Secondary side 22 2nd magnetic pole surface 222 2nd tooth groove 224 2nd protrusion tooth 32 Magnetic circuit 34 Magnetic circuit X 1st direction Y Third direction Z Second direction

Claims (2)

Two primary sides and one secondary side composed of a magnetic induction member are included, the primary sides face each other, the secondary sides are respectively provided between the primary sides, and the primary sides are respectively the secondary sides. A first direction is a direction in which the primary side and the secondary side 20 move relatively to each other, and the second side is orthogonal to the first direction X, and the primary side is the first side. Is arranged along a second direction, and a third direction is orthogonal to the first direction and the second direction,
The primary side is mainly configured by a first magnetic field unit and a second magnetic field unit provided in the vicinity of the first direction, and the first magnetic field unit on the primary side separates the secondary side from the second magnetic field unit. Facing each other in the direction, the second magnetic field unit on the primary side faces each other in the second direction with the secondary side interposed therebetween,
The first magnetic field unit includes a first exciting element and a first permanent magnet, and the first exciting element is mainly composed of two fixing brackets provided so as to circulate adjacent to each other in a lateral direction, The fixed bracket is made of a silicon sheet, the first permanent magnet is sandwiched between the fixed brackets, the fixed bracket and the first permanent magnet are arranged along the first direction X, and The first permanent magnets are arranged so that the polarities on both sides in the first direction are different,
The two fixed brackets in which the second magnetic field unit includes a second excitation component and a second permanent magnet, and the second excitation component is provided mainly around the coil in a laterally adjacent manner. And the fixed bracket is made of a silicon sheet, the second permanent magnet is sandwiched between the fixed brackets, and the fixed bracket and the second permanent magnet are arranged along the first direction. Then, the second permanent magnets are arranged so that the polarities on both sides in the first direction are different,
The first permanent magnet on the primary side and the second permanent magnet facing each other along the first direction X form a facing of the same polarity,
The first permanent magnets arranged along the second direction form opposite poles facing each other, and the second permanent magnets arranged along the second direction form opposite poles facing each other,
The magnetic circuits 32, 34 formed on the primary side are orthogonal to the third direction,
Thin bipolar anti-phase stepping motor. In the fixed bracket, each first magnetic pole surface is formed so as to face the secondary side, and a plurality of first protruding teeth are formed on each of the first magnetic pole surface of the fixed bracket. A groove is formed between each adjacent first protruding tooth,
The secondary side forms a second magnetic pole surface facing the first magnetic pole surface, and a plurality of second tooth grooves are formed in the second magnetic pole surface so that the plurality of second protruding teeth are respectively formed. Formed between the second tooth spaces,
The thin bipolar anti-phase stepping motor according to claim 1.

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