Motor rotor structure, motor and method of winding a wire harness web

Abstract

The application discloses a motor rotor structure, a motor and a winding method of a wire harness net. The motor rotor structure comprises a rotor body and a protective sleeve. The rotor body is provided with a winding area on the circumferential side of the rotor body. At least a magnetic core structure is arranged on the rotor body and corresponds to the winding area. The protective sleeve comprises a wire harness net which is wound on the winding area of the rotor body and is arranged in a net shape. The wire harness net is formed by single wire harnesses which are interlaced and woven along the axial direction of the rotor body. The wire harnesses are woven along the axial direction of the rotor body, so that the wire harnesses can exert a certain pre-compressive stress along the radial direction of the rotor body, the wire harness net can resist the centrifugal force along the radial direction of the rotor body, the wire harnesses can exert a certain pre-compressive stress along the axial direction of the rotor body, the wire harnesses can transmit the load along the axial direction of the rotor body, the wire harness net can bear the force along the axial direction of the rotor body, the wire harness net can bear the force exerted in different directions, and the protection effect of the protective sleeve is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor rotor, and particularly relates to a motor rotor structure and a winding method of a wire harness net. BACKGROUND

[0002] At present, the rotor of a rare earth permanent magnet motor has a large centrifugal force and a large deformation at a high rotating speed, and there is a risk of bore sweeping, so that the permanent magnet may be scattered and broken in rotation. Therefore, a protective sleeve is usually arranged on the outer periphery of the rotor to exert a certain pre-stress on the rotor to improve the strength of the rotor and ensure the safety of the rotor. However, the existing protective sleeve is formed by winding a wire harness on the rotor in a radial direction and then solidifying the wire harness by resin. Since the load is only transmitted and balanced by the adhesive force of the resin in the axial direction, the protective sleeve can only resist the force in the centrifugal direction and cannot bear the force applied in other directions. SUMMARY

[0003] The main purpose of the present application is to provide a motor rotor structure and a winding method of a wire harness net, which aims to solve the problem that the protective sleeve can only resist the force in the centrifugal direction and cannot bear the force applied in other directions.

[0004] To achieve the above-mentioned purpose, the present application provides a motor rotor structure, which comprises:

[0005] a rotor body, a winding area is formed on the periphery of the rotor body, and at least a magnetic core structure is arranged on the rotor body corresponding to the winding area; and

[0006] a protective sleeve, which comprises a wire harness net wound on the winding area of the rotor body and arranged in a net shape, and the wire harness net is formed by interlacing a single wire harness back and forth along the axial direction of the rotor body.

[0007] Optionally, the single wire harness has a plurality of wire harness segments on the projection plane in the axial direction of the rotor body, and the two ends of each wire harness segment are arranged on the opposite sides of the axis of the rotor body.

[0008] Optionally, the plurality of wire harness segments comprise a lower wire harness segment group and an upper wire harness segment group arranged in a stacked manner, and the wire harness segments on the lower wire harness segment group and the upper wire harness segment group are arranged in a cross manner to form a net shape.

[0009] Optionally, the plurality of wire harness segments are arranged in a staggered manner to form a net shape.

[0010] Optionally, the rotor body comprises two transmission half shafts arranged at the two ends of the magnetic core structure, respectively.

[0011] The wire harness net at least winds part of the transmission half shafts to connect the magnetic core structure and the two transmission half shafts.

[0012] Optionally, each of the transmission half shafts comprises a first shaft segment with a smaller diameter and a second shaft segment with a larger diameter, the magnetic core structure is clamped between the two second shaft segments, and the wire harness mesh is wound at the junction of the first shaft segment and the second shaft segment.

[0013] Optionally, a dynamic balance plate is further arranged between the second shaft segment and the magnetic core structure, and the wire harness mesh is further wound at the side end of the dynamic balance plate.

[0014] Optionally, the side end surface of the dynamic balance plate and the second shaft segment is arranged in a consistent arc-shaped surface.

[0015] Optionally, the dynamic balance plate is provided with a mounting groove, and the second shaft segment is partially inserted into the mounting groove.

[0016] Optionally, the rotor body comprises a first rotor segment with a larger diameter and a second rotor segment with a smaller diameter.

[0017] A smooth transition surface is arranged at the junction of the side end surface and the outer peripheral surface of the first rotor segment.

[0018] Optionally, the material of the wire harness comprises carbon fibers; and / or,

[0019] The protective sleeve further comprises a resin layer coated and solidified on the wire harness mesh.

[0020] Optionally, the rotor body is hollow.

[0021] The application further provides an electric machine comprising the above-mentioned electric machine rotor structure.

[0022] In addition, the application further provides a wire harness mesh winding method for winding a protective sleeve with a wire harness mesh on a rotor body, the wire harness mesh winding method comprising:

[0023] After the rotor body is assembled, a single wire harness is obliquely wound along the rotor body axially towards the second end of the rotor body, and after the wire harness is wound to the middle part of the second end of the rotor body, it is bent back to the first end of the rotor body along the side end of the rotor body to form a single winding.

[0024] The step of single winding is repeated at a preset interval to perform multiple windings until two wire harness layers are formed in a stacked and crossed manner to form a wire harness mesh.

[0025] In addition, the application further provides a wire harness mesh winding method for winding a protective sleeve with a wire harness mesh on a rotor body, the two ends of the rotor body forming two transmission shaft parts, the wire harness mesh winding method comprising:

[0026] After the rotor body assembly is completed, a single wire harness is obliquely wound along the rotor body in the axial direction of the rotor body towards the second end of the rotor body, and after the wire harness is wound to the middle of the second end of the rotor body, it is continued to be wound back to the first end of the rotor body through the transmission shaft part to form a single winding;

[0027] The step of single winding is repeated at a preset interval to perform multiple windings until the wire harness segments are interlaced and stacked with each other to form a wire harness net.

[0028] In the technical scheme of the present application, the wire harness is woven in the axial direction of the rotor body, which can not only apply a certain pre-stress to the wire harness in the radial direction of the rotor body to enable the wire harness net to resist the centrifugal force in the radial direction of the rotor body, but also apply a certain pre-stress to the wire harness in the axial direction of the rotor body to enable the wire harness to transmit the load in the axial direction of the rotor body, so that the wire harness net can bear the force in the axial direction of the rotor body, thereby enabling the wire harness net to bear the force applied in different directions, and the wire harness is woven back and forth to form the wire harness net, so as to strengthen the connection between the wire harnesses, so that the wire harness net forms a whole, thereby improving the resistance effect of the protective sleeve to the force applied in different directions, and thus helping to improve the protection effect of the protective sleeve on the rotor body. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 A perspective structural schematic diagram of an embodiment of the motor rotor structure provided by the present application;

[0031] Figure 2 A sectional structural schematic diagram of the motor rotor structure in Figure 1 ;

[0032] Figure 3 A side structural schematic diagram of the wire harness winding of the protective sleeve in the first embodiment; Figure 1

[0033] A first winding process structural schematic diagram of the wire harness winding of the protective sleeve in the first embodiment; Figure 4 Figure 1

[0034] ​​Figure 5 Fig. 1 is a schematic diagram of a first embodiment of a wire harness winding method according to the present application; Figure 1 Fig. 2 is a schematic diagram of a first winding process structure of the wire harness winding method according to the present application;

[0035] Figure 6 Fig. 3 is a schematic diagram of a second winding process structure of the wire harness winding method according to the present application; Figure 1 Fig. 4 is a schematic diagram of a third winding process structure of the wire harness winding method according to the present application;

[0036] Figure 7 Fig. 5 is a schematic diagram of a fourth winding process structure of the wire harness winding method according to the present application; Figure 1 Fig. 6 is a schematic diagram of a fifth winding process structure of the wire harness winding method according to the present application;

[0037] Figure 8 Fig. 7 is a schematic diagram of a wire harness winding method in a conventional protective sleeve;

[0038] Figure 9 Fig. 8 is a flowchart of a first embodiment of the wire harness winding method according to the present application;

[0039] Figure 10 Fig. 9 is a flowchart of a second embodiment of the wire harness winding method according to the present application.

[0040] BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Reference Name Reference Name 100 Motor rotor structure 14 First rotor segment 1 Rotor body 141 Side end face 11 Magnetic core structure 142 Outer peripheral surface 12 Drive half shaft 143 Circular smooth transition surface 121 First shaft segment 15 Second rotor segment 122 Second shaft segment 2 Protective sleeve 13 Dynamic balance plate 21 Wire harness 131 Mounting groove

[0042] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0044] It should be noted that if the embodiments of the present application involve directional indications, the directional indications are only used to explain the relative position relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0045] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0046] At present, the rotor of the rare earth permanent magnet motor has large centrifugal force and large deformation at high speed, and there is a risk of sweeping the bore, so that the permanent magnet may be scattered and broken in rotation. Therefore, a protective sleeve is usually arranged on the outer periphery of the rotor to apply a certain pre-stress to the rotor to improve the strength of the rotor and ensure the safety of the rotor. However, the existing protective sleeve is generally formed by radially winding a single wire bundle on the rotor and then curing resin, and the load is only transmitted and balanced by the adhesion of the resin in the axial direction, so that the protective sleeve can only resist the force in the centrifugal direction, and cannot bear the force applied in other directions.

[0047] Therefore, the present application provides a motor rotor structure, which aims to solve the problem that the protective sleeve can only resist the force in the centrifugal direction, and cannot bear the force applied in other directions. Wherein, Figures 1 to 7 The structure diagram of the motor rotor structure provided by the present application is shown in the figure; Figure 8 The winding diagram of the wire bundle of the existing motor rotor protection is shown in the figure; Figures 9 to 10 The flowchart of the winding method of the wire bundle net provided by the present application is shown in the figure.

[0048] Please refer to Figures 1 to 3 The motor rotor structure 100 includes a rotor body 1 and a protective sleeve 2, the rotor body 1 is formed with a winding area on the side of the rotor body 1, and at least a magnetic core structure 11 is arranged on the rotor body 1 corresponding to the winding area, the protective sleeve 2 includes a wire bundle net which is wound on the winding area of the rotor body 1 and arranged in a net shape, and the wire bundle net is formed by interlacing a single wire bundle 21 back and forth along the axial direction of the rotor body 1.

[0049] The technical scheme of the present application, the wire harness 21 is woven along the axial direction of the rotor body 1, so that the wire harness 21 can not only apply a certain pre-stress in the radial direction of the rotor body 1 to enable the wire harness network to resist the centrifugal force in the radial direction of the rotor body 1, but also can apply a certain pre-stress in the axial direction of the rotor body 1 to enable the wire harness 21 to transmit the load in the axial direction of the rotor body 1, so that the wire harness network can bear the force in the axial direction of the rotor body 1, thereby enabling the wire harness network to bear the force applied in different directions, and the wire harness 21 is woven back and forth to form the wire harness network, so as to strengthen the connection between the wire harnesses 21, so that the wire harness network forms a whole, thereby improving the resistance effect of the protective sleeve 2 to the force applied in different directions, thereby helping to improve the protection effect of the protective sleeve 2 on the rotor body 1.

[0050] It should be noted that, referring to Figure 8 , the wire harness 21 in the existing protective sleeve 2 is usually wound in one direction in the radial direction of the rotor surface, and is cured and formed by resin, so that the protective sleeve 2 has a certain pre-stress on the rotor, thereby protecting the safety of the rotor, but the axial direction only relies on the adhesive force of the resin to transmit and balance the load, so that the protective sleeve 2 can only resist the force in the centrifugal direction, and cannot bear the force applied in other directions. In the present application, the wire harness 21 is woven back and forth along the axial direction of the rotor body 1, so that the wire harness 21 can not only apply a certain pre-stress in the radial direction of the rotor body 1 to enable the wire harness network to resist the centrifugal force in the radial direction of the rotor body 1, but also can apply a certain pre-stress in the axial direction of the rotor body 1 to enable the wire harness 21 to transmit the load in the axial direction of the rotor body 1, so that the wire harness network can bear the force in the axial direction of the rotor body 1, thereby enabling the protective sleeve 2 to bear the force applied in different directions, and helping to improve the protection effect of the protective sleeve 2.

[0051] Further, referring to Figure 3 , the projection plane along the axial direction of the rotor body 1, the single wire harness 21 has a plurality of wire harness 21 segments, and the two ends of each wire harness 21 segment are arranged on the opposite sides of the axis of the rotor body 1. In this way, the projection line of the wire harness 21 on the rotor body 1 intersects the center line of the rotor body 1, so that the winding center of the wire harness 21 can coincide with the center of the rotor body 1, so that the wire harness 21 can be wound by the shafts at both ends of the rotor body 1, so as to prevent the wire harness 21 from sliding off the rotor body 1 during winding, thereby ensuring that the wire harness 21 is wound in the predetermined direction on the rotor body 1.

[0052] Further, the wire harness 21 can be woven in various ways on the rotor body 1, specifically, in an embodiment, referring toFigures 4 to 6 The plurality of wire harness 21 segments include a lower layer wire harness segment group and an upper layer wire harness segment group arranged in a stacked manner, and the wire harness 21 segments on the lower layer wire harness segment group and the upper layer wire harness segment group are arranged in a cross manner to form a mesh, so that the wire harness 21 is arranged in a one-way axial direction of the rotor body 1, and the arrangement route is simple, and the wire harness mesh can be quickly formed on the rotor body 1. In another embodiment, please refer to Figure 7 The plurality of wire harness 21 segments are arranged in a cross manner to form a mesh, which can form a cross on the wire harness 21 through a single arrangement, and compared with the stacked cross structure, the single cross arrangement can strengthen the connection between the wire harness 21, avoid the position of the wire harness 21 from moving, and make the integrity of the wire harness mesh better, and on the other hand, the wire harness 21 can be wound on the rotating shaft at the end of the rotor body 1, and the wire harness 21 can be prevented from deviating during winding, so that the wire harness 21 can be wound along the preset route.

[0053] The rotating shaft of the rotor body 1 can be an integral transmission shaft, or can be a half shaft arranged separately, and specifically, in the embodiment, please refer to Figure 2 The rotor body 1 includes two transmission half shafts 12 arranged at both ends of the magnetic core structure 11 respectively, wherein the wire harness mesh is at least wound on the transmission half shaft 12 to connect the magnetic core structure 11 and the two transmission half shafts 12, so that the transmission shaft of the rotor body 1 is divided into two transmission half shafts 12 arranged at intervals, and the protective sleeve 2 is used as a support to connect the two transmission half shafts 12 and the magnetic core structure 11 into a whole, which can simplify the structure of the rotor body 1 and reduce the weight of the rotor body 1, thereby helping to lighten the motor rotor structure 100.

[0054] Further, the transmission half shaft 12 is convenient for connecting with the magnetic core structure 11, and in the embodiment, please refer to Figure 2 Each transmission half shaft 12 includes a first shaft segment 121 with a smaller diameter and a second shaft segment 122 with a larger diameter, the magnetic core structure 11 is clamped between the two second shaft segments 122, and the wire harness mesh is wound at the junction of the first shaft segment 121 and the second shaft segment 122, so that the first shaft segment 121 is arranged to transmit torque, and the second shaft segment 122 is arranged to increase the volume of the transmission half shaft 12 to increase the contact area between the transmission half shaft 12 and the magnetic core structure 11, which is convenient for connecting the transmission half shaft 12 with the magnetic core structure 11, and can make the transmission half shaft 12 uniformly apply pressure to the magnetic core structure 11, thereby helping to strengthen the connection between the transmission half shaft 12 and the magnetic core structure 11.

[0055] In order to keep the motor rotor structure 100 in dynamic balance when rotating, in the embodiment, please refer to Figure 2 A dynamic balance plate 13 is further arranged between the second shaft section 122 and the magnetic core structure 11, and the wire harness net is also wound on the side end of the dynamic balance plate 13. In this way, by arranging the dynamic balance plate 13, the weight of the rotor body 1 is balanced, so that the rotation center line of the rotor body 1 coincides with the geometric center of the rotor body 1, thereby keeping the electronic rotor structure in dynamic balance when rotating, and preventing the rotor body 1 from vibrating when rotating.

[0056] Since the dynamic balance plate 13 and the second shaft section 122 are located at the bending position of the rotor body 1, in order to avoid stress concentration of the wire harness 21 when winding on the rotor body 1, in the embodiment, please refer to Figure 2 The side end surface 141 of the dynamic balance plate 13 and the second shaft section 122 is arranged as a consistent arc surface, so that the bending position of the rotor body 1 can be smoothly transitioned to avoid the presence of edges at the bending position, thereby helping to avoid stress concentration of the wire harness 21 when winding, and helping to improve the service life of the wire harness 21.

[0057] Further, the dynamic balance plate 13 is provided with a mounting groove 131, and the second shaft section 122 is partially inserted into the mounting groove 131. In this way, by arranging the mounting groove 131, on the one hand, the position of the transmission half shaft 12 on the dynamic balance plate 13 can be positioned, which is beneficial to quickly install the transmission half shaft 12 on the dynamic balance plate 13, and on the other hand, the contact area between the transmission half shaft 12 and the dynamic balance plate can be increased, so as to transmit the torque on the transmission half shaft 12 to the dynamic balance plate 13, so that the dynamic balance plate 13 can rotate synchronously with the transmission half shaft 12.

[0058] In order to avoid stress concentration of the wire harness 21 when winding, specifically, in the embodiment, please refer to Figure 3The rotor body 1 includes a first rotor section 14 with a larger diameter and a second rotor section 15 with a smaller diameter, and a smooth transition surface 143 is arranged at the junction of a side end surface 141 and an outer peripheral surface 142 of the first rotor section 14. Since the side end surface 141 of the first rotor section 14 extends in the radial direction of the rotor body 1, and the outer peripheral surface 142 of the first rotor section 14 extends in the axial direction of the rotor body 1, the wire harness 21 will be bent when it is wound from the side end surface 141 to the outer peripheral surface 142, causing stress concentration of the wire harness 21 at the junction of the side end surface 141 and the outer peripheral surface 142. Therefore, the smooth transition surface 143 is arranged to allow the wire harness 21 to smoothly transition at the junction of the side end surface 141 and the outer peripheral surface 142, thereby avoiding stress concentration of the wire harness 21 during winding.

[0059] The wire harness 21 can be made of glass fiber, carbon fiber or the like, and the present application does not limit the material of the wire harness 21. In this embodiment, the wire harness 21 is made of carbon fiber. Since carbon fiber has a small specific gravity and high strength, the use of carbon fiber can not only reduce the weight of the protective sleeve 2, but also ensure that the protective sleeve 2 can exert sufficient prestress on the rotor body 1. In addition, carbon fiber is relatively soft and easy to weave into the wire harness net.

[0060] To strengthen the connection between the wire harness net and the rotor body 1, the protective sleeve 2 further includes a resin layer coated on the wire harness net in this embodiment. In this way, the resin layer can not only fix the wire harness net on the rotor body 1, but also strengthen the strength of the wire harness 21 and enhance the prestress of the protective sleeve 2 on the rotor body 1. In addition, the resin layer can also protect the wire harness 21 from being abraded.

[0061] It should be noted that the above two associated technical features, i.e., the material of the wire harness 21 includes carbon fiber, and the protective sleeve 2 further includes a resin layer coated on the wire harness net, can be set simultaneously or separately. Obviously, the simultaneous setting is better.

[0062] To reduce the weight of the rotor body 1, the rotor body 1 is hollow in this embodiment, so as to reduce the weight of the rotor body 1, thereby facilitating the lightweight of the motor rotor structure 100.

[0063] To achieve the above object, the application further provides an electric machine comprising the electric machine rotor structure 100. It should be noted that the structure of the electric machine rotor structure 100 in the electric machine can refer to the embodiments of the electric machine rotor structure 100, which will not be repeated here. Since the electric machine rotor structure 100 is used in the electric machine provided by the application, the embodiments of the electric machine provided by the application include all the technical solutions of all the embodiments of the electric machine rotor structure 100, and the technical effects achieved are also completely the same, which will not be repeated here.

[0064] Based on the above structure, the application further provides a winding method of a wire mesh for winding a protective sleeve 2 with a wire mesh on a rotor body 1. Specifically, referring to Figure 9 , the winding method of the wire mesh comprises:

[0065] S10: After the rotor body 1 is assembled, a single wire 21 is used to tilt and wind along the rotor body 1 from the first end of the rotor body 1 to the second end of the rotor body 1, and after the wire 21 is wound to the middle of the second end of the rotor body 1, it is bent back to the first end of the rotor body 1 along the side end of the rotor body 1 to form a single winding.

[0066] S20: Repeat the single winding step at a preset interval to perform multiple windings until each wire 21 segment of the wire 21 is interlaced and stacked to form a wire mesh.

[0067] In this embodiment, the wire harness 21 is interlaced back and forth between the first end and the second section, so that the wire harness 21 can not only apply a certain pre-stress in the radial direction of the rotor body 1 to enable the wire harness net to resist the centrifugal force in the radial direction of the rotor body 1, but also apply a certain pre-stress in the axial direction of the rotor body 1 to enable the wire harness 21 to transmit load in the axial direction of the rotor body 1, so that the wire harness net can bear forces applied in different directions. At the same time, the wire harness 21 is inclined to be wound in the axial direction of the rotor body 1, so that the projection line of the wire harness 21 on the rotor body 1 intersects the center line of the rotor body 1, so that the winding center of the wire harness 21 can coincide with the center of the rotor body 1, so as to prevent the wire harness 21 from slipping off the rotor body 1 during winding. In addition, the wire harness 21 is bent around the side end of the rotor body 1, which can not only enable the wire harness 21 to form an intersection through single winding, can strengthen the connection between the wire harnesses 21, avoid the position of the wire harness 21 from moving, and make the integrity of the wire harness net better, but also enable the wire harness 21 to be wound on the shaft at the end of the rotor body 1, so as to avoid the wire harness 21 from deviating during winding, so that the wire harness 21 can be wound along a preset route. Further, the winding method of the wire harness 21 in this embodiment is described in detail in the following Figure 7 .

[0068] Based on the above structure, the application further provides a winding method of a wire harness net for winding a protective sleeve 2 with a wire harness net on a rotor body 1, both ends of the rotor body 1 forming two transmission shaft portions, the winding method of the wire harness net comprising:

[0069] S10: After the rotor body 1 is assembled, a single wire harness 21 is inclined to be wound in the axial direction of the rotor body 1 towards the second end of the rotor body 1 at the first end of the rotor body 1, and after the wire harness 21 is wound to the middle of the second end of the rotor body 1, it is wound back to the first end of the rotor body 1 through the transmission shaft portion to form single winding;

[0070] S20: Repeat the step of single winding at a preset interval to perform multiple windings until two layers of wire harnesses 21 are formed by stacking and interlacing to form a wire harness net.

[0071] In the embodiment, the wire harness 21 is interwoven back and forth between the first end and the second section, so that the wire harness 21 can apply a certain pre-stress in the radial direction of the rotor body 1 to enable the wire harness net to resist centrifugal force in the radial direction of the rotor body 1, and can apply a certain pre-stress in the axial direction of the rotor body 1 to enable the wire harness 21 to transmit load in the axial direction of the rotor body 1, so that the wire harness net can bear force in the axial direction of the rotor body 1, thereby enabling the wire harness net to bear force applied in different directions. Meanwhile, the wire harness 21 is inclined to be wound in the axial direction of the rotor body 1, so that the projection line of the wire harness 21 on the rotor body 1 intersects the center line of the rotor body 1, to enable the winding center of the wire harness 21 to coincide with the center of the rotor body 1, so as to prevent the wire harness 21 from sliding off the rotor body 1 during winding. In addition, the wire harness 21 is wound back to the first end of the rotor body 1 through the transmission shaft part, so that the wire harness 21 is unidirectionally wound in the axial direction of the rotor body 1, and the winding route is simple, which facilitates the rapid formation of the wire harness net on the rotor body 1. Further, the winding mode of the wire harness 21 in the embodiment is described in detail with reference to Figures 4 to 6 .

[0072] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the concept of the present application, and the contents of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A motor rotor structure, characterized in that, include: A rotor body, having a winding region formed on its circumference, and at least one magnetic core structure provided on the rotor body corresponding to the winding region; and... The protective sleeve includes a wire harness that is wound around the winding area of ​​the rotor body and is arranged in a mesh shape. The wire harness is formed by single wire harnesses being woven back and forth along the axial direction of the rotor body. The rotor body includes two transmission half-shafts respectively disposed at both ends of the magnetic core structure; The wire harness is wound around at least a portion of the drive half-shaft to connect the magnetic core structure and the two drive half-shafts; Each of the transmission half-shafts includes a first shaft segment with a smaller diameter and a second shaft segment with a larger diameter. The magnetic core structure is sandwiched between the two second shaft segments, and the wire harness is wound to the junction of the first shaft segment and the second shaft segment. A dynamic balancing plate is also provided between the second shaft segment and the magnetic core structure, and the wire mesh is also wound around the side end of the dynamic balancing plate.

2. The motor rotor structure as described in claim 1, characterized in that, On the projection plane along the axial direction of the rotor body, the single wire harness has multiple wire harness segments, with the two ends of each wire harness segment located on opposite sides of the axis of the rotor body.

3. The motor rotor structure as described in claim 2, characterized in that, The multiple wire harness segments include a lower wire harness segment group and an upper wire harness segment group arranged in a stacked manner, with the wire harness segments on the lower wire harness segment group and the upper wire harness segment group intersecting to form a mesh.

4. The motor rotor structure as described in claim 2, characterized in that, Multiple wire segments are interlaced and overlapped to form a mesh.

5. The motor rotor structure as described in claim 1, characterized in that, The dynamic balancing plate and the side end faces of the second shaft segment are arranged in a consistent arc shape.

6. The motor rotor structure as described in claim 1, characterized in that, The dynamic balancing plate is provided with a mounting groove, and the second shaft section is inserted into the mounting groove.

7. The motor rotor structure as described in claim 1, characterized in that, The rotor body includes a first rotor segment with a larger diameter and a second rotor segment with a smaller diameter; A smooth transition surface is provided at the junction of the side end face and the outer peripheral face of the first rotor section.

8. The motor rotor structure as described in claim 1, characterized in that, The wire harness is made of carbon fiber; and / or, The protective sleeve also includes a resin layer coated and cured on the wire harness mesh.

9. The motor rotor structure as described in claim 1, characterized in that, The rotor body is hollow.

10. An electric motor, characterized in that, Includes the motor rotor structure as described in any one of claims 1 to 9.

Images