TWI782545B - Electric mechanical structure and stator shell thereof - Google Patents

Abstract

An electric mechanical structure and a stator shell thereof are disclosed. The stator shell includes several teeth portions, several same-pole magnetic parts and several windings. The several teeth portions are equidistantly arranged on an inner peripheral wall of a cylindrical housing. The same-pole magnetic parts are arranged between the tooth portions. The windings are arranged on the tooth portions. In this way, the amount of magnets of the electric mechanical structure can be reduced and the efficiency of the electric mechanical structure can be improved.

Description

Motor structure and its stator housing

The invention relates to a motor device, in particular to a motor structure with the functions of magnetic adjustment and magnetic gear and its stator shell.

The gap between the stator teeth of the conventional magnetic gear motor is usually provided with a non-magnetic baffle; the magnetic adjustment core components of the conventional magnetic gear motor are mostly made of metal mechanical locking and carbon steel as the iron core; the conventional magnetic gear motor There is an output solid shaft on one side only.

Based on the above, the conventional magnetic gear motors need to be improved due to the large amount of magnets used, the complicated structure, the difficulty in improving the performance, and the limited applicable occasions.

In view of this, it is necessary to provide a technical solution different from the past to solve the problems existing in the prior art.

An object of the present invention is to provide a motor structure in which a plurality of magnetic components with the same polarity are arranged in the gap between adjacent stator teeth, so as to reduce the amount of magnets used and improve the performance of the motor.

The second object of the present invention is to provide a stator shell that can be configured as a stator component of a motor structure, so as to reduce the amount of magnets used and improve the performance of the motor.

In order to achieve the above purpose, one aspect of the present invention provides a stator shell, including: several teeth, equidistantly arranged on the inner peripheral wall of a cylindrical housing; several homopolar magnetic parts, arranged on the several teeth between the parts; and several windings are arranged on the several teeth parts.

In an embodiment of the present invention, the end of each tooth part far away from the inner peripheral wall and each of the homopolar magnetic parts together form a quasi-circumferential surface.

In one embodiment of the present invention, the circumferential width of the end of the tooth portion away from the inner peripheral wall is greater than or equal to the circumferential width of the homopolar magnetic element.

In one embodiment of the present invention, the polarities of the radially inward surfaces of the plurality of homopolar magnetic elements are both N poles or S poles.

In order to achieve the above purpose, another aspect of the present invention provides a motor structure, including: a stator shell, including several teeth, several homopolar magnetic parts and several windings, the several teeth are equidistantly arranged on An inner peripheral wall of a cylindrical housing, the several homopolar magnetic parts are arranged between the several teeth, and the several windings are arranged on the several teeth; a rotor is rotatably arranged on the stator shell The internal space of the part, the rotor has a rotating shaft and several magnets with different poles alternately spaced apart, the several magnets are spaced apart from the several windings; a magnetic adjustment assembly is rotatably arranged in the internal space of the stator shell , the magnetic adjustment component has a shaft adjustment, several magnetic adjustment cores and several solid core plastic parts, the several magnetic adjustment cores and the several solid core plastic parts are arranged at intervals to form a cylindrical shape, and the several magnetic adjustment cores It is arranged between the several magnets and the several windings, the adjusting shaft and the rotating shaft are arranged coaxially in different directions; and the fixed shell end cover is combined with the cylindrical shell, the fixed shell end cover and the cylindrical shell The body jointly restricts the rotor and the magnetic modulation assembly to be located in the inner space of the stator shell.

In an embodiment of the present invention, the end of each tooth part far away from the inner peripheral wall and each of the homopolar magnetic parts together form a quasi-circumferential surface.

In one embodiment of the present invention, the circumferential width of the end of the tooth portion away from the inner peripheral wall is greater than or equal to the circumferential width of the homopolar magnetic element.

In one embodiment of the present invention, the polarities of the radially inward surfaces of the plurality of homopolar magnetic elements are both N poles or S poles.

In one embodiment of the present invention, the material of the solid core plastic part is epoxy resin, glass fiber, carbon fiber composite material or engineering plastic.

In an embodiment of the present invention, the plurality of tuning cores are formed by stacking self-adhesive silicon steel sheets.

In one embodiment of the present invention, the rotating shaft is provided with a torque sensor.

In one embodiment of the present invention, the axis adjustment is provided with a position sensor.

In the present invention, the motor structure and its stator case are arranged between the teeth of the inner peripheral wall of the stator case through the several homopolar magnetic parts, so as to reduce the amount of magnets used and improve the performance of the motor. The above-mentioned stator shell and the motor formed by the above-mentioned stator shell of the present invention can reduce the amount of magnets, simplify the structure, improve performance and use margins, and can improve the traditional magnetic gear motors that have a large amount of magnets, complex structure, difficult to improve performance, and poor application conditions. To improve the technical capacity of the motor field.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, preferred embodiments of the present invention will be exemplified below in detail together with the attached drawings. Furthermore, the directional terms mentioned in the present invention are, for example, up, down, top, bottom, front, back, left, right, inside, outside, side, surrounding, central, horizontal, transverse, vertical, longitudinal, axial, The radial direction, the uppermost layer or the lowermost layer, etc. are only directions referring to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

One aspect of the present invention provides a stator case. The following examples illustrate the implementation of the stator case according to the embodiment of the present invention, but not limited thereto.

For example, as shown in Figure 1, the stator case 1 of the embodiment of the present invention includes several tooth parts 11, several homopolar magnetic parts 12 and several windings 13, and the several tooth parts 11 are equidistantly arranged on The inner peripheral wall of a cylindrical housing 1a, for example, the plurality of teeth 11 are equidistantly arranged on the inner peripheral wall of the cylindrical housing 1a toward an axis of the cylindrical housing 1a, that is, the number of equiangular arrangements of the inner peripheral wall There are several tooth parts 11, and the several windings 13 are arranged on the several tooth parts 11.

For example, as shown in FIG. 1, the several tooth portions 11 and the cylindrical housing 1a where they are located may be made of a metal material that is easy to dissipate heat. For example, the several tooth portions 11 may be made of the cylindrical housing 1a Axial extension. In this way, the heat dissipation material can be used to assist in dissipating the waste heat generated when the windings are energized and operated.

Exemplarily, as shown in Fig. 1, the several homopolar magnetic elements 12 can be composed of magnetic elements (such as permanent magnets) whose surfaces facing the same central direction are magnetized to form the same magnetic (such as N pole or S pole), For example, the radially inward (towards a virtual central axis) surface (such as a plane or arc surface) has a single polarity (such as N poles) and the radially outward (towards the virtual central axis) surface has a single polarity (such as S poles) ), in one embodiment, the polarity of the radially inward surface of the several homopolar magnetic parts 12 is N pole or S pole; the several homopolar magnetic parts 12 are arranged on the several tooth parts 11 Between, to provide a single magnetic magnetic force. In this way, when the stator case is applied to a motor structure as a stator, the equal pole magnetic part can assist the magnetic field coupling effect of the magnetic modulation assembly and the rotor accommodated in the inner space of the stator case, and can improve the magnetic loading capacity , in order to assist in improving the motor performance.

It should be noted that in the embodiment of the present invention, several homopolar magnetic parts are arranged between the several teeth parts. Compared with other technologies in which the homopolar magnetic parts are not provided in these tooth parts, the embodiment of the present invention can reduce the The amount of magnets is used to reduce the overall volume and increase the magnetic flux density to improve the overall performance of the motor.

Optionally, in one embodiment, as shown in FIG. 1, the end of each tooth portion 11 away from the inner peripheral wall and each of the homopolar magnets 12 jointly form a quasi-circumferential surface, such as a perfect circular surface or a regular polygon Etc., for example, the polarity of the several homopolar magnetic parts 12 on this kind of circumferential surface is N pole or S pole. In this way, auxiliary rotation positioning components (such as bearings, etc.) can be provided on such peripheral surfaces, so that the rotor of the motor structure can run relative to the stator.

It should be understood that, as shown in FIG. 1, one end of each tooth portion 11 away from the inner peripheral wall can extend toward both sides (for example, along a circumferential direction) to form a shoe portion, and any two adjacent tooth portions 11 A groove can be formed, and the inner peripheral wall of the bottom of the groove can be regarded as a yoke, and the opening of the groove (between the two boots) can be regarded as a notch, and its detailed structure depends on its Those with ordinary knowledge in the technical field can understand it and will not repeat it here.

Optionally, in one embodiment, as shown in FIG. 1 , each tooth portion 11 is away from the end of the inner peripheral wall (such as at the shoe portion) and the diameter of a joint between the homopolar magnetic member 12 The thickness is equal to each other, and the axial length of the joint between the end of each tooth portion 11 away from the inner peripheral wall (such as the boot portion) and the homopolar magnetic member 12 is equal (as shown in Figure 2), and The distance between the adjacent two tooth parts 11 of the homopolar magnetic part 12 away from the end of the inner peripheral wall (such as at the shoe part) is equal to the circumferential width of the homopolar magnetic part 12 (as shown in Figure 2) .

Optionally, in one embodiment, as shown in Figures 2 and 4, the circumferential width of the tooth portion 11 away from the end of the inner peripheral wall (such as extending from both sides in a circumferential direction to form the shoe portion) W11 can be equal to the circumferential width W12 of the homopolar magnet 12 (as shown in Figure 2), but not limited thereto, the circumferential width of the end of the tooth portion 11 away from the inner peripheral wall can also be larger than the homopolar The circumferential width of the magnet 12 (as shown in Fig. 4), for example, the circumferential width of the end of the tooth portion 11 away from the inner peripheral wall is 0.2 to 0.5 times greater than the circumferential width of the homopolar magnet 12, such as 0.2, 0.25, 0.3, 0.35, 0.4, 0.45 or 0.5 times, etc., but not limited thereto. Thereby, the effect of smooth magnetic conduction can be achieved between the tooth portion and the magnetic member with the same polarity.

For example, as shown in FIG. 1, the several windings 13 can be configured as at least one phase coil, for example, the coils of the same phase are electrically connected to each other, and the coils of different phases are electrically insulated from each other, which is in the technical field Those with ordinary knowledge can understand that the several windings 13 can be used to generate different electromagnetic driving modes, so as to achieve a predetermined power conversion effect.

The above-mentioned stator shell can be used with an inner rotor as a motor structure (such as a motor, a generator or a magnetic gear, etc.), and the motor structure can also be matched with a magnetic modulation component to form a motor with a magnetic modulation function ( Such as speed governor or wind turbine components, etc.).

Another aspect of the present invention provides a motor structure. The implementation of the motor structure of the embodiment of the present invention is illustrated below, but not limited thereto.

For example, as shown in Fig. 3, the motor structure may include a stator shell 1, a rotor 2, a magnetic modulation assembly 3 and a certain shell end cover 4, the stator shell 1 includes several teeth 11, several A number of homopolar magnetic parts 12 and several windings 13, the several tooth parts 11 are equidistantly arranged on the inner peripheral wall of a cylindrical housing 1a, and the several homopolar magnetic parts 12 are arranged between the several tooth parts 11 , the several windings 13 are arranged on the several tooth portions 11 .

For example, as shown in FIG. 3, the rotor 2 is rotatably arranged in the inner space of the stator shell 1, and the rotor 2 at least includes a rotating shaft 21 and several magnets 22 with different poles alternately spaced apart, and the several magnets 22 is opposite to the several windings 13; the magnetic modulation assembly 3 is rotatably arranged in the inner space of the stator shell 1, and the magnetic modulation assembly 3 has a shaft adjustment 31, several magnetic adjustment cores 32 and several The solid core plastic part 33, the several magnetizing cores 32 and the several solid core plastic parts 33 are arranged at intervals to form a cylindrical shape, the several magnetizing cores 32 are arranged between the several magnets 22 and the several windings 13 Between, the adjusting shaft 31 and the rotating shaft 21 are arranged coaxially in different directions. In one embodiment, a torque sensor (torque sensor) 21s can also be arranged on the rotating shaft 21, for example; the torque sensor 21s can be It is configured to be sleeved on the outer peripheral surface of the rotating shaft 21 to sense a torque output by the rotating shaft 21; a position sensor (position sensor) 31s, such as a resolver (resolver), can also be arranged on the adjusting shaft 31 ), the position sensor 31a can be configured to be sleeved on the outer peripheral surface of the adjustment shaft 31 to sense a rotational position or rotation amount of the adjustment shaft 31, thereby eliminating the need for an additional external sensing element , can achieve the effect of motor self double-effect sensing; in addition, the fixed case end cover 4 is combined with the cylindrical case 1a, and the fixed case end cover 4 and the cylindrical case 1a jointly restrict the rotor 2 and The magnetic modulation assembly 3 is located in the inner space of the stator case 1 .

Some implementation aspects of the stator case 1 are described above, and will not be repeated here. Optionally, in one embodiment, as shown in FIG. 4, in the motor structure and the stator case embodiment, each of the homopolar magnetic parts 12 has a first magnetic surface 121 and a first magnetic surface 121 opposite to each other. Two magnetic surfaces 122, the first magnetic surface 121 faces the inner peripheral wall of the cylindrical casing 1a, and the second magnetic surface 122 is away from the inner peripheral wall of the cylindrical casing 1a, for example, the second magnetic surface 122 and the first magnetic surface 122 The magnetic surface 121 is a magnetic part distributed on the two opposite surfaces of the homopolar magnetic part 12. The magnetic pole of the second magnetic surface 122 is different from that of the first magnetic surface 121. For example, the two opposite surfaces of the homopolar magnetic part 12 form a N face or S face.

The remaining components of the motor construction are exemplified below. For example, as shown in Figure 3, the rotating shaft 21 of the rotor 2 can be formed by a hollow shaft body, and the magnets 22 with alternately spaced different poles can be alternately composed of an even number of magnets with N and S polarities (such as permanent magnets, etc.) Spaces are formed on the outer peripheral surface of a rotating magnetic cylindrical structure 23 , and a closed end of the rotating magnetic cylindrical structure 23 is connected to the rotating shaft 21 .

As shown in Figure 3, the adjustment shaft 31 of the magnetic adjustment component 3 can be formed by a hollow shaft, and the several magnetic adjustment cores 32 can be formed by stacking self-adhesive silicon steel sheets; the material of several solid core plastic parts 33 can be selected as Epoxy resin, glass fiber, carbon fiber composite material or engineering plastics are made by molding; the several magnetic cores 32 and the several solid core plastic parts 33 can be arranged at intervals to form a core-aligning cylindrical structure, such as the number A magnet core 32 can also be assisted in positioning by an iron core end cover 32a and one of the adjusting shaft end cover 31a of the adjusting shaft 31, and the adjusting shaft 31 can also form a positioning extension 31b, and the positioning extending portion 31b stretches into the adjusting shaft. In the core cylindrical structure, for example, the positioning extension 31b can be provided with a buckle (such as a C buckle) 31c to assist in positioning the rotor 21, for example, the rotating magnetic cylindrical structure 23 of the rotor 2 can be sleeved on the adjustment Between the core-adjusting cylindrical structure of the magnetic assembly 3 and the positioning extension 31b, the several magnetizing cores 32 are arranged between the several magnets 22 and the several windings 13, and the several magnetizing cores 32 are arranged Between the several magnets 22 and the several homopolar magnetic parts 12 (as shown in Fig. 2 pole pairs, but not limited to this). In this way, the production cost can be effectively reduced, and the structural strength and magnetic permeability can be improved at the same time. Moreover, the two end faces of the magnet-tuning core have no eddy current, and can be coupled and transmitted by a low-loss high-efficiency magnetic circuit.

In addition, as shown in Figure 3, in order to make the magnetic modulation assembly 3 rotate relative to the stator shell 1 and the rotor 2, and the rotor 2 can rotate relative to the magnetic modulation assembly 3 and the stator shell 1, Rotation positioning parts of appropriate size and quantity can also be set, such as many bearings, etc., for example, a first bearing A can be arranged on the end of the shaft adjustment 31 and the stator case 1 (for example, the stator case 1 is away from the fixed case end One end of the cover 4) is used to assist in positioning the magnetic modulation assembly 3 to rotate relative to the stator shell 1; in addition, a second bearing B1 and a third bearing B2 can be arranged between the positioning extension 31b and the rotor 2, between the second bearing B1 and the third bearing B2, a spacer ring B3 can also be provided to assist in positioning the rotor 2 to rotate relative to the magnetic modulation assembly 3; and a fourth bearing C1 and a fifth bearing C2 can be disposed between the rotating shaft 21 and the end cover 4 of the fixed case for assisting in positioning the rotor 2 relative to the stator case 1 for rotation. In this way, the rotatable shafts all have a high degree of concentricity.

Also, as shown in Figure 3, the adjusting shaft 31 and the rotating shaft 21 are arranged coaxially in different directions. In the internal space of the stator case 1, the fixed casing end cover 4 and the cylindrical casing 1a can be provided with appropriate openings for the rotating shaft 21 and the adjusting shaft 31 to protrude respectively, and are used as two kinetic energy transmission parts, such as The adjusting shaft 31 can be used to adjust the rotational speed, and the rotating shaft 21 can be used to input or output rotational kinetic energy. In this way, the two kinetic energy transmission parts transmit kinetic energy on the coaxial front and rear ends, which can reduce the total components and facilitate installation.

It should be understood that the stator case of the above-mentioned embodiments of the present invention can be configured as a motor structure (such as a motor, a generator, a magnetic gear, a speed reducer, a torque converter or related devices) of the above-mentioned embodiments. The structure parameters can also be adjusted according to special needs, and the overall magnet consumption of the motor structure can be adjusted to improve the performance of the motor, so as to be suitable for electric tools (such as various motors, machine tool tables and various vehicles (such as bicycles or cars, etc.)) Kinetic energy adjustment and other functions, but not limited to this.

For example, when the stator winding of the motor structure is excited and the frequency is zero, the relationship between the rotor and the magnetic modulation component can be regarded as a passive transmission mechanism with a single reduction ratio, and the passive transmission mechanism can also have a torque transmission overload protection function, It can be used as a passive non-contact magnetic reducer.

In addition, when the winding of the stator of the motor structure is excited, given a speed frequency, the rotor outputs the speed, and the magnetic modulation component is fixed, which can be regarded as a single-input and single-output motor structure, such as an active motor with a maximum speed ratio output and A combination structure of non-contact reducer.

In addition, when the windings of the stator of the motor structure are excited, given a speed frequency, the rotor outputs a speed, and the magnetic modulation component inputs a speed, which can be regarded as a double-input single-output (ECVT) motor structure, which can achieve stable output of the rotor Rotational speed, such as a wind power generator, in case of unstable wind, the magnetic modulation component can be controlled to the rotational speed frequency of the stator, which can achieve a stable rotational speed output by rotating a piece, and if it is coupled with a generator, it can be directly connected to the grid Mains.

In summary, the above-mentioned motor structure and the embodiment of the stator shell of the present invention are arranged between the teeth of the inner peripheral wall of the stator shell by the several homopolar magnetic parts, so as to reduce the amount of magnets and improve the efficiency of the motor. efficacy. The above-mentioned stator shell and the motor formed by the above-mentioned stator shell of the present invention can reduce the amount of magnets, simplify the structure, improve performance and use margins, and can improve the traditional magnetic gear motors that have a large amount of magnets, complex structure, difficult to improve performance, and poor application conditions. To improve the technical capacity of the motor field.

Although the present invention has been disclosed with preferred embodiments, it is not intended to limit the present invention. Anyone skilled in this art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be determined by the scope of the attached patent application.

1: Stator shell 1a: Cylindrical shell 11: Tooth 12: Homopolar magnetic parts 121: The first magnetic surface 122: second magnetic surface 13: Winding 2: rotor 21: Shaft 21s:Torque sensor 22: magnet 23: Rotating magnetic cylindrical structure 3: Magnetic modulation components 31:Axis adjustment 31a: Shaft adjustment end cover 31b: positioning extension 31c: Buckle 31s: Position sensor 32: Magnetic core 32a: Core end cap 33: Solid core plastic parts 4: fixed shell end cover A: The first bearing B1: Second bearing B2: The third bearing B3: spacer ring C1: Fourth bearing C2: fifth bearing W11: The circumferential width of the end of the tooth away from the inner peripheral surface of the stator shell W12: Circumferential width of magnetic parts with the same polarity

[Fig. 1]: A three-dimensional assembled view of the stator case of the embodiment of the present invention. [Figure 2]: Schematic diagram of the combined structure of the homopolar magnetic parts and the stator teeth of the embodiment of the present invention. [Figure 3]: An exploded perspective view of the motor structure of the embodiment of the present invention. [Figure 4]: Schematic diagram of the different magnetic surfaces of the homopolar magnetic parts used in the stator case of the motor structure according to the embodiment of the present invention. [Fig. 5]: Schematic diagram of the relative positions of the homopolar magnetic parts, the magnetic adjustment core and the rotor magnet of the motor structure of the embodiment of the present invention.

1: Stator shell

1a: Cylindrical shell

11: Tooth

12: Homopolar magnetic parts

13: Winding

2: rotor

21: Shaft

21s:Torque sensor

22: magnet

23: Rotating magnetic cylindrical structure

3: Magnetic modulation components

31:Axis adjustment

31a: Shaft adjustment end cover

31b: positioning extension

31c: Buckle

31s: Position sensor

32: Magnetic core

32a: Core end cap

33: Solid core plastic parts

4: fixed shell end cover

A: The first bearing

B1: Second bearing

B2: The third bearing

B3: spacer ring

C1: Fourth bearing

C2: fifth bearing

Claims (12)

A stator shell, comprising: several teeth, equidistantly arranged on the inner peripheral wall of a cylindrical shell; several homopolar magnetic parts, arranged between the several teeth; and several windings, arranged on the On several tooth parts; wherein any two adjacent teeth parts in the several tooth parts are connected to the same homopolar magnetic part among the several homopolar magnetic parts. The stator casing as claimed in claim 1, wherein the end of each tooth part away from the inner peripheral wall and each of the homopolar magnetic parts jointly form a quasi-circumferential surface. The stator casing as claimed in claim 1, wherein the circumferential width of the end of the tooth portion away from the inner peripheral wall is greater than or equal to the circumferential width of the homopolar magnetic member. The stator casing as claimed in claim 1, wherein the polarities of the radially inward surfaces of the several homopolar magnetic parts are N pole or S pole. A motor structure, comprising: a stator shell, including several teeth, several magnetic parts with the same polarity and several windings, the several teeth are equidistantly arranged on the inner peripheral wall of a cylindrical shell, and the several cogs The pole magnets are arranged between the several teeth, and the several windings are arranged on the several teeth; a rotor is rotatably arranged in the inner space of the stator shell, and the rotor has a rotating shaft and several Alternately spaced magnets with different poles, the several magnets are spaced apart from the several windings; a magnetic adjustment assembly is rotatably arranged in the inner space of the stator shell, and the magnetic adjustment assembly has a shaft adjustment, several adjustment shafts The magnetic core and several solid core plastic parts, the several magnetic adjustment cores and the several solid core plastic parts are arranged at intervals to form a cylindrical shape, and the several magnetic adjustment cores are arranged between the several magnets and the several windings , the adjusting shaft and the rotating shaft are arranged coaxially in different directions; and The fixed casing end cover is combined with the cylindrical casing, and the fixed casing end cover and the cylindrical casing together restrict the rotor and the magnetic modulation assembly to be located in the inner space of the stator casing. The motor structure as described in Claim 5, wherein the end of each tooth part away from the inner peripheral wall forms a quasi-circumferential surface together with each of the homopolar magnetic parts. The motor structure as claimed in claim 5, wherein the circumferential width of the end of the tooth portion away from the inner peripheral wall is greater than or equal to the circumferential width of the homopolar magnetic member. The motor structure as described in Claim 5, wherein the polarity of a radially inward surface of the several homopolar magnetic parts is N pole or S pole. The motor structure according to claim 5, wherein the material of the solid core plastic part is epoxy resin, glass fiber, carbon fiber composite material or engineering plastic. The motor structure as described in Claim 5, wherein the several tuning cores are formed by stacking self-adhesive silicon steel sheets. The motor structure as claimed in claim 5, wherein the rotating shaft is provided with a torque sensor. The motor structure as claimed in claim 5, wherein the shaft adjustment is provided with a position sensor.

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