Guide structure for magnetic suspension motor

Abstract

The utility model relates to the field of motor assembly, and discloses a guide structure for a magnetic suspension motor, the guide structure comprises a main body section and a matching section, the main body section is provided with a first end along the axial direction of the main body section, the matching section is arranged at the first end along the axial direction of the main body section, and the matching section is suitable for being matched with a rotating shaft of the magnetic suspension motor. Therefore, the rotating shaft is guided to enter the stator of the magnetic suspension motor. The rotating shaft assembling device has the beneficial effect of improving the rotating shaft assembling efficiency and quality.

Description

Technical Field

[0001] The present application relates to the field of motor assembly, and particularly to a guiding structure for a magnetic levitation motor. Background Art

[0002] With the development of motor technology, magnetic levitation motors have received increasing attention. The structure of a magnetic levitation motor mainly includes a stator and a rotating shaft. The stator is usually used to generate an alternating magnetic field, and the rotating shaft is usually a magnetic component that can rotate under the action of the stator magnetic field. The quality of the magnetic levitation motor is closely related to the quality of the stator and the rotating shaft. In the related art, during the process of assembling or disassembling the rotating shaft from the motor, since a permanent magnet is provided on the rotating shaft, the rotating shaft may be attracted radially by the stator, causing the rotating shaft to collide with the components on the stator, easily damaging the components on the stator, and reducing the assembly efficiency. Summary of the Utility Model

[0003] The present application provides a guiding structure for a magnetic levitation motor, which solves the technical problems that during the assembly process of the motor, the rotating shaft is attracted by the stator, thereby damaging the components on the stator and having a low assembly efficiency, and achieves the technical effect of improving the assembly efficiency and quality of the rotating shaft.

[0004] To achieve the above object, the main technical solutions adopted by the present application include:

[0005] An embodiment of the present application provides a guiding structure for a magnetic levitation motor, including a main body section and a mating section. Along the axial direction of the main body section, the main body section has a first end. Along the axial direction of the main body section, the mating section is provided at the first end, and the mating section is adapted to cooperate with the rotating shaft of the magnetic levitation motor to guide the rotating shaft into the stator of the magnetic levitation motor.

[0006] For the guiding structure for a magnetic levitation motor proposed in an embodiment of the present application, the first end of the main body section is connected to the rotating shaft through the mating section to guide the rotating shaft into the stator of the magnetic levitation motor. In this way, on the one hand, the guiding structure can be used to guide and insert the rotating shaft of the magnetic levitation motor into the stator of the magnetic levitation motor, so that the rotating shaft of the magnetic levitation motor can be assembled along a preset direction. On the other hand, the probability of collision between the rotating shaft of the magnetic levitation motor and the stator of the magnetic levitation motor is reduced, the assembly efficiency is improved, and the assembly cost is reduced.

[0007] Optionally, the maximum outer diameter of the mating section is smaller than the minimum outer diameter of the main body section.

[0008] Thus, the main body section can be used as the main guiding part to guide the assembly of the rotating shaft, reducing the probability of collision between the rotating shaft and the stator during the assembly process and reducing the assembly cost.

[0009] Optionally, a fixing member fastened to the rotating shaft is provided on the fitting section.

[0010] By providing a fixing member fastened to the rotating shaft on the fitting section, the guiding structure can be firmly connected to the rotating shaft, improving the overall stability of the guiding structure and the rotating shaft during the assembly process, reducing the probability of the guiding structure separating from the rotating shaft, and improving the assembly efficiency.

[0011] Optionally, the fixing member is configured as an external thread formed on the outer peripheral surface of the fitting section.

[0012] By configuring the fixing member as an external thread formed on the outer peripheral surface of the fitting section, the rotating shaft and the guiding structure can be fixedly connected by means of thread fitting. On the one hand, the axial length of the assembly of the guiding mechanism and the rotating shaft can be adjusted according to the actual assembly situation. On the other hand, the stability of the assembly and fixation of the guiding structure and the rotating shaft can be improved through thread fitting connection, reducing the probability of failures during the assembly process.

[0013] Optionally, along the axis of the main body section, the fitting section includes a first fitting section and a second fitting section connected in sequence. The first fitting section is farther from the main body section than the second fitting section. The outer peripheral surface of one of the first fitting section and the second fitting section is a cylindrical surface, and the outer peripheral surface of one of the first fitting section and the second fitting section is provided with the external thread.

[0014] The outer peripheral surface of one of the first fitting section and the second fitting section is set as a cylindrical surface. The cylindrical surface is assembled and fitted with the rotating shaft, which can play a role in positioning and guiding the rotating shaft, making the axis of the rotating shaft coincide with the axis of the guiding structure and improving the assembly quality of the rotating shaft.

[0015] Optionally, along the axial direction of the main body section, the main body section further has a second end, which is disposed opposite to the first end. The guiding structure further includes a guiding section, and the guiding section is disposed at the second end. The maximum outer diameter of the guiding section is smaller than the minimum outer diameter of the main body section.

[0016] By setting the maximum outer diameter of the guiding section to be smaller than the minimum outer diameter of the main body section, the guiding structure can more easily pass through the inside of the stator of the magnetic levitation motor, reducing the probability of the guiding structure colliding with the stator of the magnetic levitation motor.

[0017] Optionally, along the axial direction of the main body section and away from the fitting section, the outer diameter of the guiding section gradually decreases.

[0018] Along the axial direction of the main body section and away from the fitting section, the outer diameter of the guiding section gradually decreases, which can facilitate the insertion of the guiding structure into the stator and also reduce the probability of the guiding section colliding with the stator of the magnetic levitation motor, improving the stability of the assembly.

[0019] Optionally, the axes of the main body section, the mating section, and the guiding section coincide.

[0020] This can ensure that the entire guiding structure is on the same axis, making the movement path of the guiding structure consistent with that of the rotating shaft, and reducing the probability of collision between the guiding structure and the interior of the stator.

[0021] Optionally, along the axial direction of the main body section, the dimensions of both the mating section and the guiding section are smaller than those of the main body section.

[0022] This can better ensure the guiding function of the guiding mechanism. During the relative sliding of the main body section with the first protective bearing, it ensures that the rotating shaft can fully extend into the interior of the stator of the magnetic levitation motor. Additionally, it reduces the probability of collision between the stator and the rotating shaft due to magnetic attraction during the assembly process, and can also reduce the manufacturing cost of the guiding structure and save materials.

[0023] Optionally, mounting holes for installing a force - adding rod are provided on the guiding section.

[0024] By providing mounting holes for installing a force - adding rod on the guiding section, the force - adding rod can be inserted into the mounting holes, facilitating the assembly guidance of the guiding structure for the rotating shaft and improving the assembly efficiency.

[0025] Optionally, the axial direction of the mounting holes is orthogonal to the axial direction of the guiding section.

[0026] Making the axial direction of the mounting holes orthogonal to the axial direction of the guiding section facilitates the insertion of the force - adding rod into the guiding section and also helps the assembler to more conveniently control the force - adding rod for assembling the rotating shaft, thus improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic structural diagram of the assembly of the guiding structure and the rotating shaft provided by an embodiment of the present application;

[0029] Figure 2 is Figure 1 the top view of;

[0030] Figure 3 is Figure 2 the cross - sectional view in the A - A direction;

[0031] Figure 4 The sectional view in the A-A direction of another assembled state of the guiding structure and the rotating shaft provided by the embodiment of the present application; Figure 2 in

[0032] Figure 5 The structural schematic diagram of the guiding structure provided by the embodiment of the present application;

[0033] Figure 6 is Figure 5 the side view of

[0034] Figure 7 is Figure 6 the sectional view in the A-A direction;

[0035] Figure 8 The structural schematic diagram of the stator provided by the embodiment of the present application;

[0036] Figure 9 is Figure 8 the top view of

[0037] Figure 10 is Figure 9 the sectional view in the B-B direction;

[0038] Figure 11 The structural schematic diagram of the rotating shaft provided by the embodiment of the present application;

[0039] Figure 12 is Figure 11 the side view of

[0040] Figure 13 is Figure 12 the sectional view in the C-C direction.

[0041]

Explanation of the reference numerals of the drawings

[0042] Guiding structure 100;

[0043] Main body section 110;

[0044] First end 111;

[0045] Second end 112;

[0046] Fitting section 120;

[0047] Fixing member 121;

[0048] First fitting section 122;

[0049] Second fitting section 123;

[0050] First fitting peripheral surface 1200;

[0051] Rotating shaft 130;

[0052] Second mating circumferential surface 1300;

[0053] Rotating shaft body 131;

[0054] Third circumferential surface 132;

[0055] Stator 140;

[0056] Housing 141;

[0057] First protective bearing 142;

[0058] First channel 142a;

[0059] First radial magnetic bearing 143;

[0060] First permanent magnet 144;

[0061] Motor stator assembly 145;

[0062] Second radial magnetic bearing 146;

[0063] Second permanent magnet 147;

[0064] Second protective bearing 148;

[0065] Guide section 150;

[0066] Mounting hole 151;

[0067] First detection ring 160;

[0068] First rotating shaft laminate 170;

[0069] Sheath 180;

[0070] Third permanent magnet 190;

[0071] Second rotating shaft laminate 200;

[0072] Second detection ring 210. Detailed implementation manners

[0073] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some but not all of the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0074] Unless otherwise defined, all technical and scientific terms used in this application shall have the same meanings as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order or primary-secondary relationship.

[0075] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appearing at various positions in the description does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0076] In the description of this application, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", "joined", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0078] The "multiple" mentioned in this application refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0079] With the development of motor technology, the magnetic levitation motor has attracted more and more attention. The structure of the magnetic levitation motor mainly includes two parts: a stator and a rotating shaft. The stator is composed of components such as a housing, a first protective bearing, a first permanent magnet, a motor stator assembly, a second radial magnetic bearing, a second permanent magnet, and a second protective bearing. The rotating shaft is composed of components such as a first detection ring, a rotating shaft laminate, a sheath, a third permanent magnet, a rotating shaft laminate, and a second detection ring. The stator is usually used to generate an alternating magnetic field, and the rotating shaft is usually a magnetic component that can rotate under the action of the stator magnetic field. The quality of the magnetic levitation motor is closely related to the quality of the stator and the rotating shaft. However, in the related technology, due to the need for assembly or maintenance, the rotating shaft is often disassembled and assembled for testing or replacing parts. In the prototype or small batch trial production stage, manual assembly is usually relied on, and the assembly efficiency and quality mostly depend on the experience of the workers. During the process of assembling or disassembling the rotating shaft from the motor, since there is a third permanent magnet on the rotating shaft, it may cause the rotating shaft to be attracted radially by the stator, resulting in a collision between the rotating shaft and the components on the stator, easily damaging the sensor coil on the stator and reducing the assembly efficiency.

[0080] In view of this, the present application proposes a guiding structure for a magnetic levitation motor, including a main body section and a mating section. Along the axial direction of the main body section, the main body section has a first end. Along the axial direction of the main body section, the mating section is arranged at the first end. The mating section is adapted to be mated with the rotating shaft of the magnetic levitation motor to guide the rotating shaft into the interior of the stator of the magnetic levitation motor. In this way, the mating section can be mated with the rotating shaft, and then the rotating shaft can be driven by the guiding structure to guide the rotating shaft into the interior of the stator of the magnetic levitation motor, improving the assembly efficiency and reducing the probability of collision between the rotating shaft and the stator during the process of assembling the rotating shaft.

[0081] For the convenience of description in the following embodiments, the guiding structure for a magnetic levitation motor according to an embodiment of the present application is taken as an example for description.

[0082] Please refer to Figures 1 to 7 , Figure 1 which is a schematic structural diagram of the assembly of the guiding structure 100 and the rotating shaft 130 provided by an embodiment of the present application; Figure 2 is Figure 1 a top view of Figure 3 is Figure 2 a cross-sectional view in the A-A direction of Figure 4 is a cross-sectional view in the A-A direction of another assembly state of the guiding structure 100 and the rotating shaft 130 provided by an embodiment of the present application in Figure 2 ; Figure 5 is a schematic structural diagram of the guiding structure 100 provided by an embodiment of the present application; Figure 6 is Figure 5 a side view of Figure 7 is Figure 6 a cross-sectional view in the A-A direction of

[0083] In an embodiment of the present application, a guiding structure 100 for a magnetic levitation motor includes a main body section 110 and a mating section 120. Along the axial direction of the main body section 110, the main body section 110 has a first end 111. Along the axial direction of the main body section 110, the mating section 120 is disposed at the first end 111. The mating section 120 is adapted to mate with a rotating shaft 130 of the magnetic levitation motor to guide the rotating shaft 130 into the interior of a stator 140 of the magnetic levitation motor. The stator 140 includes a first protective bearing 142, and the first protective bearing 142 forms a first channel 142a.

[0084] During the process of disassembling and assembling the rotating shaft 130 by using the guiding structure 100 of the magnetic levitation motor, the first end 111 of the main body section 110 of the guiding structure 100 is in mating connection with the rotating shaft 130 of the magnetic levitation motor through the mating section 120, so that the guiding structure 100 and the rotating shaft 130 remain relatively fixed during the assembly process. Then, the main body section 110 of the guiding structure 100 passes through the first channel 142a on the first protective bearing 142 in the stator 140 prior to the mating section 120. When the guiding structure 100 passes through the first channel 142a, there is a first gap between the main body section 110 of the guiding structure 100 and the first channel 142a. Since the mating section 120 is disposed at the first end 111 of the main body section 110, and the rotating shaft 130 is fixedly connected to the mating section 120, the guiding structure 100 will also drive the rotating shaft 130 into the interior of the stator 140. When the main body section 110 is within the first channel 142a (at least a partial projection of the main body section 110 in the radial direction falls within the first channel 142a), at this time, the rotating shaft 130 is also inside the stator 140, and a second gap will be formed between the rotating shaft 130 and the stator 140. The maximum outer diameter of the main body section 110 is set according to the dimensions of the stator 140 and the rotating shaft 130, and the first gap is controlled to be much smaller than the second gap. In this way, even if a first permanent magnet 144 and a second permanent magnet 147 are provided on the stator 140 and will attract the rotating shaft 130, due to the first gap being much smaller than the second gap, the first channel 142a limits the position of the guiding structure 100, and the guiding structure 100 limits the position of the rotating shaft 130, ensuring that during the movement of the guiding structure 100, the rotating shaft 130 is always spaced apart from the inner side wall surface of the stator 140, reducing the probability of collision between the rotating shaft 130 and the components on the stator 140 when the rotating shaft 130 enters the interior of the stator 140.

[0085] In an embodiment of the present application, the mating section 120 is firmly enough mated with the rotating shaft 130, and the mutual magnetic force between the stator 140 and the rotating shaft 130 cannot attract the rotating shaft 130 to the stator 140, so that the problem of damaging the components on the stator 140 will not occur.

[0086] In some embodiments, the stator 140 further includes a first radial magnetic bearing 143, a first permanent magnet 144, a motor stator assembly 145, a second radial magnetic bearing 146, a second permanent magnet 147, and a second protective bearing 148. The rotating shaft 130 includes a first detection ring 160, a first rotating shaft laminate 170, a sheath 180, a third permanent magnet 190, a second rotating shaft laminate 200, and a second detection ring 210. When assembling the rotating shaft 130 onto the stator 140 using the guiding structure 100, the first mating circumferential surface 1200 on the mating section 120 is mated with the second mating circumferential surface 1300 on the rotating shaft body 131, so that the rotating shaft body 131 is fixedly and matingly connected to the guiding structure 100. Since the first permanent magnet 144 and the second permanent magnet 147 are provided on the stator 140 and the third permanent magnet 190 is provided on the rotating shaft 130, there will be a magnetic attraction force between the stator 140 and the rotating shaft 130 during the assembly process, which may cause the first radial magnetic bearing 143, the first permanent magnet 144, the motor stator assembly 145, the second radial magnetic bearing 146, the second permanent magnet 147, and the second protective bearing 148 on the stator 140 to collide with the rotating shaft 130, resulting in damage to the first radial magnetic bearing 143, the first permanent magnet 144, the motor stator assembly 145, the second radial magnetic bearing 146, the second permanent magnet 147, and the second protective bearing 148 or the components thereon, or may also cause damage to the first detection ring 160, the first rotating shaft laminate 170, the sheath 180, the third permanent magnet 190, the second rotating shaft laminate 200, and the second detection ring 210 on the rotating shaft 130. By inserting the body section into the first protective bearing 142, the position of the body section is restricted, and then the position of the guiding structure is also restricted. Moreover, the body section is fixedly connected to the mating section 120, and the mating section 120 is fixedly and matingly connected to the rotating shaft 130. In this way, the probability of collision between the stator 140 and the rotating shaft 130 during the assembly process can be reduced, the assembly efficiency can be improved, and the assembly quality can be enhanced.

[0087] In some embodiments, the material of the guiding structure can be set as a non-magnetic material.

[0088] By guiding and assembling the rotating shaft 130 onto the stator 140 using the guiding structure 100, on the one hand, since the guiding structure 100 enters the interior of the stator 140 prior to the rotating shaft 130 (acting as a guiding component), this can improve the assembly efficiency of the worker and provide guidance for the worker. On the other hand, since the main body section 110 enters the first channel 142a prior to the mating section 120, this can almost avoid collision damage between the rotating shaft 130 and the stator 140 during the assembly process, improve the assembly efficiency, and improve the use stability of the magnetic levitation motor.

[0089] In some embodiments, the maximum outer diameter of the main body section 110 can be adjusted. Generally speaking, the maximum outer diameter of the main body section 110 depends on the structural settings of the stator 140 and the rotating shaft 130. In the embodiments of the present application, it is only necessary to ensure that when the main body section 110 is inside the first protective bearing 142, the first gap formed between the maximum outer diameter of the main body section 110 and the inner diameter of the first protective bearing 142 (the diameter of the first channel 142a) is much smaller than the second gap formed between the outer diameter of the rotating shaft 130 and the inner diameter of the stator 140.

[0090] In some embodiments, a first groove 132 is provided on the outer peripheral surface of the part of the rotating shaft 130 extending into the first channel 142a, and the first groove 132 also penetrates the end surface of the rotating shaft 130 in the axial direction. Along the axial direction of the rotating shaft 130, the length of the first groove 132 is less than the length of the first protective bearing 142. This can effectively play the guiding role of the guiding structure 100 and reduce the probability of collision damage between the rotating shaft 130 and the stator 140.

[0091] In some embodiments, the magnetic levitation motor may further include a housing 141, and the stator 140 and the rotor 130 may be disposed inside the housing 141 to reduce the entry of other impurities such as dust into the stator 140.

[0092] Please refer to Figures 1 to 7 , in this embodiment, the maximum outer diameter of the mating section 120 is smaller than the minimum outer diameter of the main body section 110.

[0093] Since the guiding structure 100 is such that the main body section 110 enters the stator 140 first, if the maximum outer diameter of the mating section 120 is greater than the minimum outer diameter of the main body section 110, then it is possible that the main body section 110 can pass through the protection channel smoothly, while the mating section 120 may collide with the first protective bearing 142 due to its excessive outer diameter, thereby damaging the first protective bearing 142, and the guiding structure 100 cannot disengage from the rotating shaft 130 in the moving direction and loses its guiding function. Exemplarily, even if the maximum outer diameter of the mating section 120 is smaller than the inner diameter of the first protective bearing 142 and greater than the minimum outer diameter of the main body section 110, then when the main body section 110 enters the first channel 142a, the first gap formed between the main body section 110 and the first channel 142a will be greater than the gap formed between the rotating shaft 130 and the inner wall surface of the stator 140. At this time, the guiding structure 100 cannot play a protective role and cannot avoid the collision between the rotating shaft 130 and the stator 140. The rotating shaft 130 may still be attracted by the stator 140, causing damage to the structure of the stator 140. However, making the maximum outer diameter of the mating section 120 smaller than the maximum outer diameter of the main body section 110 can reduce the probability of collision damage between the stator 140 and the rotating shaft 130, enabling the guiding structure 100 to play a good guiding function and facilitating the operation of workers.

[0094] Please refer to Figures 1 to 7 In this embodiment, a fixing member 121 fastened to the rotating shaft 130 is provided on the mating section 120. By providing the fixing member 121 fastened to the rotating shaft 130 on the mating section 120, the fixing member 121 can be used to fasten the rotating shaft 130 and the mating section 120, and further fix the rotating shaft 130 and the guiding structure 100. This can ensure that the rotating shaft 130 can be stably driven by the guiding structure 100, and then the rotating shaft 130 can be safely and stably assembled into the stator 140 under the drive of the guiding structure 100.

[0095] In some embodiments, the fixing member 121 can be a retaining ring. Using the retaining ring to limit the axial and radial positions of the rotating shaft 130 and the guiding structure 100 can firmly fix the parts and prevent sliding or loosening on the shaft. Setting the fixing member 121 as a retaining ring makes its installation and disassembly process relatively simple and fast. Usually, only need to place the retaining ring at the position to be fixed and use appropriate tools for fastening or disassembly. This improves work efficiency and reduces maintenance costs. The retaining ring is usually made of materials with excellent corrosion resistance, such as stainless steel, copper, etc. This enables the retaining ring to maintain its stable performance for a long time in these environments and extends its service life. Moreover, as a relatively simple and low-cost fixing member 121, the retaining ring has good cost performance. They can provide reliable fixation while reducing the overall manufacturing cost and maintenance cost.

[0096] Please refer to Figures 1 to 7 In this embodiment, the fixing member 121 is configured as an external thread formed on the outer peripheral surface of the mating section 120. By setting the outer peripheral surface of the mating section 120 as an external thread, correspondingly, an internal thread can be provided on a part of the rotating shaft 130 that is in mating connection with the outer peripheral surface of the mating section 120. In this way, the rotating shaft 130 and the guiding structure 100 can be connected by means of thread fitting and fixed together. By configuring the fixing member 121 as an external thread formed on the outer peripheral surface of the mating section 120 and providing an internal thread on a part of the rotating shaft 130 that is in mating connection with the outer peripheral surface of the mating section 120, on the one hand, the fastening performance of the thread connection is good, and it can withstand tensile, shear and torque forces under high load conditions, thus improving the overall structural strength of the guiding structure 100 and the rotating shaft 130. On the other hand, the thread connection only requires the use of appropriate tools such as wrenches to complete, and does not require special skills and operating experience. This makes it easier to operate during the production and maintenance of the magnetic levitation motor and improves work efficiency. Moreover, since the thread connection is easy to disassemble and replace, the maintenance and repair work is also more convenient and fast. This reduces the maintenance cost of the magnetic levitation motor and extends its service life.

[0097] Please refer to Figures 1 to 7, in this embodiment, along the axis of the main body section 110, the mating section 120 includes a first mating section 122 and a second mating section 123 connected in sequence. The first mating section 122 is farther from the main body section 110 than the second mating section 123. The outer peripheral surface of one of the first mating section 122 and the second mating section 123 is a cylindrical surface, and the outer thread is provided on the outer peripheral surface of one of the first mating section 122 and the second mating section 123.

[0098] For example, the outer peripheral surface of the first mating section 122 can be set as a cylindrical surface, and the outer peripheral surface of the second mating section 123 can be set as an external thread.

[0099] Alternatively, the outer peripheral surface of the first mating section 122 can be set as an external thread, and the outer peripheral surface of the second mating section 123 can be set as a cylindrical surface. The outer peripheral surface of the second mating section 123 can be smooth, and the first mating peripheral surface 1200 of the rotating shaft body 131 can also be smooth. The outer peripheral surface of the second mating section 123 is in close contact (interference or transition fit) with the first mating peripheral surface 1200 of the rotating shaft body 131, so that the axis of the rotating shaft 130 coincides with the axis of the guiding structure 100. During the assembly process, since the axis of the rotating shaft 130 coincides with the axis of the guiding structure 100, the rotating shaft 130 will move along the preset trajectory following the guiding structure without deviation or inclination, thereby improving the assembly quality of the rotating shaft 130.

[0100] Please refer to Figures 1 to 13 , Figure 8 which is a schematic structural diagram of the stator 140 provided by the embodiment of the present application; Figure 9 is Figure 8 the top view; Figure 10 is Figure 9 the cross-sectional view in the B-B direction; Figure 11 which is a schematic structural diagram of the rotating shaft 130 provided by the embodiment of the present application; Figure 12 is Figure 11 the side view; Figure 13 is Figure 12 the cross-sectional view in the C-C direction.

[0101] In this embodiment, along the axial direction of the main body section 110, the main body section 110 further has a second end 112, the second end 112 is disposed opposite to the first end 111, the guiding structure 100 further includes a guiding section 150, the guiding section 150 is disposed at the second end 112, and the maximum outer diameter of the guiding section 150 is smaller than the minimum outer diameter of the main body section 110.

[0102] The guiding structure 100 may also be provided with a guiding section 150, and the guiding section 150 is arranged at the second end 112. In this way, during the assembly process, the guiding structure will enter the interior of the stator 140 prior to the main body section 110 and pass through the first channel 142a. The maximum outer diameter of the guiding section 150 is smaller than the minimum outer diameter of the main body section 110. By using the guiding section 150 with a smaller outer diameter, the guiding structure 100 can be more conveniently inserted into the first channel 142a, thereby driving the rotation shaft 130 to enter the stator 140, reducing the probability of collision between the guiding structure 100 and the stator 140 of the magnetic levitation motor, and thus completing the assembly process.

[0103] Please refer to Figures 1 to 13 , in this embodiment, along the axial direction of the main body section 110 and away from the mating section 120, the outer diameter of the guiding section 150 gradually decreases.

[0104] This enables the guiding section 150 to be more conveniently inserted into the first channel 142a, and then enables the main body section 110 of the guiding structure 100 to be inserted into the first channel 142a as well. The guiding section 150 with a smaller outer diameter usually has higher flexibility and adaptability and can more easily pass through a narrow space, which is crucial in the guiding structure 100. Gradually reducing the outer diameter of the guiding section 150 allows it to smoothly transition to the main body section 110, thereby ensuring that the first gap is smaller than the second gap, reducing the probability of collision between the rotation shaft 130 and the stator 140 of the magnetic levitation motor, and improving the assembly efficiency.

[0105] Please refer to Figures 1 to 13 , in this embodiment, the axis of the main body section 110, the axis of the mating section 120, and the axis of the guiding section 150 coincide. This can keep the entire guiding structure 100 on one axis, making the movement path of the guiding structure consistent with the movement path of the rotation shaft, thereby reducing the probability of collision between the guiding structure 100 and the stator 140 of the magnetic levitation motor.

[0106] Please refer to Figures 1 to 13 , in this embodiment, along the axial direction of the main body section 110, the dimensions of the mating section 120 and the guiding section 150 are both smaller than the dimension of the main body section 110.

[0107] This can better ensure the guiding function of the guiding mechanism 100. During the relative sliding of the main body section 110 with the first protective bearing 142, it is ensured that the rotation shaft 130 can completely extend into the interior of the stator 140 of the magnetic levitation motor. In addition, it reduces the probability of collision between the stator 140 and the rotation shaft 130 due to magnetic attraction during the assembly process, and can also reduce the manufacturing cost of the guiding structure 100 and save materials.

[0108] Please refer to Figures 1 to 13, in this embodiment, an installation hole 151 for installing a boosting rod is provided on the guiding section 150. A boosting rod can be provided on the installation hole 151 of the boosting rod, enabling an operator to apply force to the guiding structure 100 more conveniently.

[0109] Please refer to Figures 1 to 13 , in this embodiment, the axial direction of the installation hole 151 is orthogonal to the axial direction of the guiding section 150. Making the axial direction of the installation hole 151 orthogonal to the axial direction of the guiding section 150 facilitates the insertion of the boosting rod into the guiding section 150 and also helps the assembler to more conveniently control the boosting rod for assembling the rotating shaft 130, improving the assembly efficiency.

[0110] The guiding structure 100 for a magnetic levitation motor includes a main body section 110 and a mating section 120. Along the axial direction of the main body section 110, the main body section 110 has a first end 111. Along the axial direction of the main body section 110, the mating section 120 is provided at the first end 111. The mating section 120 is adapted to mate with the rotating shaft 130 of the magnetic levitation motor to guide the rotating shaft 130 into the stator 140 of the magnetic levitation motor. The maximum outer diameter of the mating section 120 is smaller than the minimum outer diameter of the main body section 110. An external thread is also provided on the outer peripheral surface of the mating section 120 for fastening with the rotating shaft 130. The guiding section 150 is provided at the second end 112 of the main body section 110. Along the axial direction of the main body section 110 and in the direction away from the mating section 120, the outer diameter of the guiding section 150 gradually decreases. Along the axial direction of the main body section 110, the dimensions of both the mating section 120 and the guiding section 150 are smaller than the dimensions of the main body section 110. The axial direction of the installation hole 151 is orthogonal to the axial direction of the guiding section 150.

[0111] It should also be noted that the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, commodity or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, commodity or device including the said element.

[0112] Each embodiment in this specification is described in a progressive manner. For parts that are the same or similar among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, reference can be made to the corresponding description in the method embodiment.

[0113] The above are only examples of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

[0114] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A guide structure for a magnetic levitation motor, characterized in that: A main body segment, wherein along the axial direction of the main body segment, the main body segment has a first end; A matching section is arranged at the first end along the axial direction of the main section, and is suitable for matching with the rotating shaft of the magnetic levitation motor to guide the rotating shaft into the stator of the magnetic levitation motor.

2. The guide structure for a magnetic levitation motor according to claim 1, characterized in that: The maximum outer diameter of the fitting section is smaller than the minimum outer diameter of the main body section.

3. The guide structure for a magnetic levitation motor according to claim 1, characterized in that: The matching section is provided with a fixing piece which is fastened to the rotating shaft.

4. The guide structure for a magnetic levitation motor according to claim 3, characterized in that: The fixing member is configured as an external thread formed on an outer peripheral surface of the matching section.

5. The guide structure for a magnetic levitation motor according to claim 4, characterized in that: Along the axis of the main body section, the mating section includes a first mating section and a second mating section connected in sequence, and the first mating section is farther away from the main body section than the second mating section; The outer circumferential surface of one of the first mating segment and the second mating segment is a cylindrical surface, and the outer circumferential surface of one of the first mating segment and the second mating segment is provided with the external thread.

6. The guide structure for a magnetic levitation motor according to claim 1, characterized in that: Along the axial direction of the main body section, the main body section also has a second end, and the second end is arranged opposite to the first end; The guide structure further includes a guide segment, which is disposed at the second end, and a maximum outer diameter of the guide segment is smaller than a minimum outer diameter of the main body segment.

7. The guide structure for a magnetic levitation motor according to claim 6, characterized in that: Along the axial direction of the main body section and in a direction away from the matching section, the outer diameter of the guide section gradually decreases.

8. The guide structure for a magnetic levitation motor according to claim 6, characterized in that: The axis of the main body section, the axis of the matching section and the axis of the guide section coincide with each other.

9. The guide structure for a magnetic levitation motor according to claim 6, characterized in that: Along the axial direction of the main body segment, the size of the matching segment and the size of the guide segment are both smaller than the size of the main body segment.

10. The guide structure for a magnetic levitation motor according to claim 6, characterized in that: The guide section is provided with a mounting hole for mounting the force adding rod.

Images