Stator slot wedge, stator module and disc motor

Abstract

The utility model discloses a kind of stator slot wedge, stator module and disc type motor, and stator slot wedge includes base piece and magnetically conductive part.Base piece is made of non-magnetic material, and base piece includes the main body section of being arranged in the slot of stator core and the inner edge section of being protrudingly arranged at the radial inner end of main body section;Magnetic conductive part is made of magnetic material, and magnetic conductive part is at least assembled in main body section and is inserted with the side slot wall of slot;The part of inner edge section away from main body section along radial direction is provided with main insertion part, main insertion part is used to and is inserted with the main matching part of being arranged in inner ring oil seal plate, and insertion is fixed by colloid adhesion, and the surface of insertion at least part is relatively axial and is inclined to extend.The utility model eliminates magnetic leakage hidden danger as far as possible, optimizes magnetic circuit, improves the operation reliability of complete machine and improves the operation efficiency of complete machine.

Description

Technical Field

[0001] This utility model relates to the field of disc motor technology, specifically to a stator slot wedge, a stator module, and a disc motor. Background Technology

[0002] An axial flux motor is a special type of motor in which the magnetic flux direction is parallel to the motor axis; it is also known as a disc motor or flat motor. Axial flux motors have the advantages of compact structure, high power density, and high efficiency, and are therefore widely used.

[0003] The stator assembly in an electric motor is a crucial component of the motor's magnetic circuit. It typically comprises the stator core and stator windings. The stator core has pre-set mounting slots for assembling the stator windings. These mounting slots come in various types, including fully open, semi-open, and closed slots. Currently, fully open slots are the easiest to form. However, the mounting slot structure that maximizes motor performance is generally the semi-open slot, as it effectively concentrates magnetism and reduces losses in the magnetic slot wedges.

[0004] Existing technologies typically incorporate stator slot wedges, which, when assembled into fully open slots, effectively function as semi-open slots. However, improper structural design or assembly of the stator slot wedges within the stator assembly can lead to uneven stress at the assembly point and magnetic leakage, significantly reducing motor performance. Utility Model Content

[0005] The main purpose of this utility model is to propose a stator slot wedge, a stator module, and a disc motor, which aims to solve the problem of reduced motor performance caused by improper structure or assembly of traditional stator slot wedges.

[0006] To achieve the above objectives, this utility model proposes a stator slot wedge, comprising:

[0007] A base member, made of a non-magnetic material, includes a main body section for placement within a slot in a stator core, and an inner edge section protruding from the radially inner end of the main body section; and,

[0008] A magnetic conductive element, made of a magnetically conductive material, is assembled at least at the main body section and is used to insert into the side wall of the slot.

[0009] The inner edge segment is provided with a main insertion part at a position radially away from the main body segment. The main insertion part is used to insert with the main mating part provided in the inner ring oil sealing plate. The insertion part is fixed by adhesive bonding. At least a part of the surface of the insertion part extends obliquely relative to the axial direction.

[0010] Optionally, the main connector is configured as a protruding structure, and the inner edge segment constitutes the main connector in its entirety;

[0011] The main mating part is configured with a matching groove structure.

[0012] Optionally, the inner edge segment is provided with a first insertion portion at the radial inner end of the main insertion portion, and the first insertion portion is used to insert with a first mating portion provided in the main mating portion.

[0013] Optionally, the first insertion portion is configured as a protruding structure, and the first mating portion is configured as a matching groove structure;

[0014] The first insertion part has a first shaft end surface flush with the slot opening, two first circumferential side surfaces connected to the two circumferential sides of the first shaft end surface, and a first radial end surface connecting the first shaft end surface and the two first circumferential side surfaces.

[0015] Wherein, the first radial end surface extends obliquely relative to the axial direction; and / or,

[0016] At least one of the first peripheral side surfaces extends obliquely relative to the axial direction.

[0017] Optionally, the first insertion portion is configured as a protruding structure, and the first mating portion is configured as a matching groove structure;

[0018] The radial inner end of the main connector has two second radial end surfaces disposed on the circumferential sides of the first connector, and at least one of the second radial end surfaces extends obliquely relative to the axial direction.

[0019] Optionally, the first radial end surface extends at an angle relative to the axial direction;

[0020] The radial inner end of the main plug has two second radial end surfaces disposed on the circumferential sides of the first plug, and at least one of the second radial end surfaces extends obliquely relative to the axial direction.

[0021] The tilt direction of the first radial end surface is opposite to that of the tilt direction of the second radial end surface.

[0022] Optionally, a second insertion portion is provided on each of the two circumferential sides of the inner edge segment, and the second insertion portion is used to insert with the second mating portion provided on the main mating portion.

[0023] Optionally, the second insertion part is configured as a protruding structure, and the second mating part is configured as a matching groove structure;

[0024] The second insertion portion has a second shaft end surface and a third shaft end surface that are arranged opposite to each other along the axial direction, and a second peripheral side surface that connects the second shaft end surface and the third shaft end surface;

[0025] At least the second shaft end surface extends at an angle relative to the axial direction.

[0026] In addition, to achieve the above objectives, this utility model also provides a stator module, comprising:

[0027] The stator core includes a yoke arranged in a ring shape and a plurality of teeth protruding from one axial side of the yoke. The teeth are arranged circumferentially at intervals, and a slot is defined between every two adjacent teeth.

[0028] The stator windings are wound one-to-one on each of the aforementioned teeth;

[0029] As described above, the stator slot wedges are provided in multiple locations corresponding to each of the slots, and the main body segment and the magnetic conductive element in each stator slot wedge are assembled at the corresponding slot and cover the slot opening; and,

[0030] An inner ring oil sealing plate is disposed within the ring of the stator core. The inner ring oil sealing plate is provided with a main mating part, and the structure of the inner ring oil sealing plate is adapted to the structure of the stator slot wedge.

[0031] In addition, to achieve the above objectives, this utility model also provides a disc motor, including a rotor module and a stator module as described above;

[0032] The stator module has one; or...

[0033] The stator module is provided in two parts, and the two stator modules are disposed on both sides of the rotor module along the axial direction.

[0034] In the technical solution provided by this utility model, the main body section of the base component provides a stable structural support for the magnetic conductive component, facilitating its more fitting installation into the slot and effectively limiting the stator winding housed within the slot. While performing its magnetic guiding function, the magnetic conductive component minimizes leakage flux, thereby optimizing the magnetic circuit and improving the overall operational reliability. Furthermore, the cooperation between the non-magnetic base component and the magnetic conductive component helps to appropriately reduce the amount of magnetic conductive structure required, thus reducing eddy current phenomena during operation and ultimately improving the overall operating efficiency.

[0035] During assembly, the additional protruding inner edge of the base component can be fitted and inserted with the inner ring oil sealing plate, which helps to further increase the assembly stability of the stator slot wedge. On the other hand, the interlocking connection also helps to improve the sealing performance between the stator slot wedge and the inner ring oil sealing plate.

[0036] Next, by setting at least a portion of the surface of the insertion joint to be inclined relative to the axial direction, an inclined surface for coating the adhesive can be formed. The formation of this inclined surface provides a sufficiently large surface area to accommodate more adhesive, helping to enhance the insertion strength at that location. Furthermore, it can decompose the axial magnetic pull, preventing uneven coating or adhesive overflow caused by excessive unidirectional magnetic pull, thus reducing the bonding effect. This application contributes to improving the overall operating performance of the machine. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 A perspective view of an embodiment of the stator slot wedge provided by this utility model;

[0039] Figure 2 for Figure 1 A three-dimensional schematic diagram of the stator slot wedge from another perspective;

[0040] Figure 3 for Figure 1 Exploded view of the main structure of the stator slot wedge;

[0041] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0042] Figure 5 A schematic diagram of an embodiment of the stator module provided by this utility model from an axial perspective;

[0043] Figure 6 for Figure 5 Schematic diagram of the main structure of the middle stator module;

[0044] Figure 7 for Figure 5 A cross-sectional view of the middle stator module taken from a radial perspective after a partial axial section.

[0045] Figure 8 for Figure 5A cross-sectional view of the middle stator module taken from a circumferential perspective after being partially cut along the axial direction.

[0046] Figure 9 for Figure 5 A three-dimensional schematic diagram of the inner ring oil sealing plate;

[0047] Figure 10 for Figure 9 A magnified structural diagram at point B in the middle.

[0048] Explanation of icon numbers:

[0049] 100 Stator core; 110 Yoke; 120 Tooth; 130 Slot; 131 Sliding groove; 200 Stator winding; 300 Stator slot wedge; 310 Base component; 311 Main body section; 312 Inner edge section; 313 Main insertion part; 314 First insertion part; 314a First shaft end surface; 314b First circumferential side surface; 314c First radial end surface; 315 Second insertion part; 315a Second shaft end surface; 315b Third shaft end surface; 315c Second circumferential side surface; 316 Second radial end surface; 320 Magnetic conductor; 321 Rib; 400 Inner ring oil sealing plate; 411 Main mating part; 412 First mating part; 413 Second mating part.

[0050] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0052] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0053] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0054] Please see Figures 1 to 10 This utility model provides a stator slot wedge 300 and its respective stator modules and disc motors.

[0055] For ease of understanding, in the following embodiments, the stator slot wedge 300, the stator module and the disc motor are all illustrated with corresponding axial, radial, circumferential and tangential directions.

[0056] Please refer to Figures 4 to 8 A disc motor typically consists of a stator module and a rotor module. Correspondingly, the stator and rotor modules in a disc motor are arranged in a basically parallel disc shape. The magnetic field of a disc motor is distributed along the axial direction, and the air gap is planar, which makes the overall structure of the disc motor flat and compact.

[0057] In a disc motor, when there is one rotor module, there can also be one stator module, which are stacked in near parallel arrangement on one side of the rotor module's axial direction. Alternatively, there can be two stator modules, each stacked on one side of the rotor module's axial direction. When there are two stator modules, their structures are essentially identical.

[0058] The stator module generally includes a stator core 100, a stator winding 200, a stator slot wedge 300, and an inner ring oil sealing plate 400. Of course, depending on actual needs, the stator module may also include, for example, end shells and outer ring shell plates, in addition to the above, but these will not be described in detail in this case.

[0059] The stator core 100 includes a yoke 110 arranged in a ring shape and a plurality of teeth 120 protruding from one axial side of the yoke 110. The teeth 120 are arranged sequentially at intervals along the circumference, and a slot 130 is defined between every two adjacent teeth 120.

[0060] Since the yoke 110 extends in a ring shape along the circumference, the shape of each tooth 120 arranged sequentially on the yoke 110 along the circumference is roughly trapezoidal (the base and fixed side are arc-shaped trapezoids). In particular, the radial inner end of the tooth 120 generally abuts against the radial outer end of the inner ring oil sealing plate 400 at the same location.

[0061] The yoke 110 and the tooth 120 can be integrally formed. Alternatively, the yoke 110 and the tooth 120 can be obtained by detaching or non-detaching them after being separately formed.

[0062] The slot 130 defined between every two adjacent teeth 120 is generally designed to radially penetrate the stator core 100 to form a through slot. This facilitates the subsequent winding operation of the stator winding 200. Furthermore, the slot width of the slot 130 is basically designed to remain constant in the radial direction to ensure structural uniformity and balanced and stable performance.

[0063] Multiple stator windings 200 are provided. Each stator winding 200 is wound in a corresponding manner at each tooth 120. After the stator winding 200 is wound into place at the tooth 120, a portion of the winding segment will pass through the slot 130. At this time, the axial end of the winding segment passing through the slot 130 will be stopped and limited by the yoke 110.

[0064] Subsequently, after the stator slot wedges 300 are assembled one by one into each slot 130, the stator slot wedges 300 can stop and limit the axial end of the winding segment passing through the slot 130. In this way, with the joint limiting of the yoke 110, the stator slot wedges 300 and the tooth 120, the stator winding 200 can be effectively prevented from detaching abnormally.

[0065] The inner ring oil sealing plate 400 is approximately annular and is assembled within the annular space of the stator core 100. As described above, once assembled, a portion of the radially outer end of the inner ring oil sealing plate 400 will engage with the radially inner end of the tooth 120. The remaining portion of the radially outer end of the inner ring oil sealing plate 400 will engage with the radially inner end of the stator slot wedge 300.

[0066] The main inventive point of this application lies in improving the performance of the assembly contact between the stator slot wedge 300 and the inner ring oil sealing plate 400 by modifying the structure of the stator slot wedge 300. Therefore, the following will be combined with the appendix Figures 1 to 10 This paper mainly elaborates on the structure of the stator slot wedge 300 itself, as well as the matching arrangement of the stator slot wedge 300 and the inner ring oil sealing plate 400.

[0067] It should be noted that when the structure of the radial inner end of the stator slot wedge 300 is improved, the original structure can still be retained at the radial outer end of the inner ring oil sealing plate 400, at least in the part that abuts against the radial inner end of the stator slot wedge 300 (and then, for example, by filling the assembly gap with colloid to achieve a fit). However, generally, this part of the inner ring oil sealing plate 400 will undergo adaptive structural improvements to basically ensure a more suitable assembly and abutment with the radial inner end of the stator slot wedge 300.

[0068] Please refer to the specific details. Figures 1 to 4 , Figures 8 to 10 The stator slot wedge 300 provided by this utility model includes a base member 310 and a magnetic conductive member 320.

[0069] The base component 310 is made of a non-magnetic material. Specifically, the non-magnetic material is, for example, a plastic material. The plastic material can be arbitrarily selected according to the operating parameters such as the motor's operating environment and temperature, and can be, but is not limited to, PP, PA, POM, PPA, PPS, PES, PEI, PEEK, etc.

[0070] The magnetically conductive component 320 is made of a magnetically conductive material. Specifically, the magnetically conductive material is, for example, silicon steel, soft iron, etc.

[0071] The base member 310 includes a main body segment 311 and an inner edge segment 312 protruding from the radial inner end of the main body segment 311.

[0072] The main body section 311 is primarily housed within the slot 130. Therefore, the radial length of the main body section 311 is generally set to be approximately the same as the slot length of the slot 130. Of course, it can also be appropriately larger or smaller than the slot length of the slot 130 depending on actual needs.

[0073] The magnetic conductor 320 is assembled at the main body section 311. In this application, the radial length of the magnetic conductor 320 is generally set to be approximately the same as the groove length of the slot 130. Alternatively, it can be appropriately smaller than the groove length of the slot 130 according to actual needs, but should not extend beyond the slot 130 as much as possible. In this way, magnetic leakage caused by the magnetic conductor 320 extending beyond the slot 130 can be effectively avoided, thereby helping to optimize the magnetic circuit.

[0074] like Figures 1 to 3 As shown, the magnetic conductive element 320 may include two magnetic strips. The two magnetic strips are respectively disposed on both sides of the circumference of the main body segment 311 and are respectively assembled with the main body segment 311.

[0075] More specifically, each magnetic strip may include multiple magnetic blocks arranged radially in sequence. When the magnetic component 320 is specifically made of silicon steel sheets, each magnetic block may be composed of one or more silicon steel sheets. Several magnetic blocks at the same magnetic strip are sequentially spliced ​​together. The thickness of each magnetic block can be set to the same value. Alternatively, the thickness of each magnetic block can be set to be different according to actual needs.

[0076] The magnetic blocks can be stacked and formed into a magnetic strip using a riveting process. This riveting process is easy to manufacture. Alternatively, the magnetic blocks can be stacked and fixed using a pin-threading method to effectively ensure the structural stability and reliability of the magnetic strip.

[0077] After assembly, the magnetic strip is generally configured to slightly protrude circumferentially from the circumferential sidewall of the main body segment 311, replacing the main body segment 311 to directly assemble and abut against the toothed portion 120 (i.e., the sidewall of the slot 130). Specifically, the circumferential sides of the magnetic element 320 are respectively provided with a rib 321 on one of the corresponding sidewalls of the slot 130, and a groove 131 on the other. The rib 321 and the groove 131 extend radially and are interlocked. For example... Figure 7 As shown, the magnetic conductive element 320 may have a protruding rib 321, which extends radially in an elongated shape. The side wall of the slot 130 is recessed with a sliding groove 131. The sliding groove 131 also penetrates the toothed portion 120 radially.

[0078] During assembly, the stator slot wedge 300 can be inserted into the slot 130 from, for example, the radially outer side of the stator core 100. During this process, the rib 321 slides along the groove 131, smoothly guiding the stator slot wedge 300 to the accurate position. Once assembled, the rib 321 and the groove 131 mutually restrain each other at least axially, effectively preventing the stator slot wedge 300 from dislodging outwards through the slot opening of the slot 130.

[0079] The joint between the rib 321 and the groove 131 can be bonded and fixed with an adhesive. At least a portion of the surface at the joint extends obliquely relative to the axial direction.

[0080] The inner edge segment 312 protrudes from the radial inner end of the main body segment 311. That is, after assembly, the inner edge segment 312 extends beyond the slot 130. The inner edge segment 312 and the main body segment 311 can be integrally formed. Alternatively, the inner edge segment 312 and the main body segment 311 can be detachably or non-detachably connected after being separately formed.

[0081] The inner edge segment 312 has a main insertion portion 313 located radially away from the main body segment 311. The inner ring oil sealing plate 400 has a main mating portion 411 at a corresponding position. The main insertion portion 313 and the main mating portion 411 are fitted together and fixed by adhesive bonding. At least a portion of the surface of the insertion portion extends obliquely relative to the axial direction.

[0082] In the technical solution provided by this utility model, the main body segment 311 in the base member 310 provides a stable structural support for the magnetic conductor 320, which facilitates the installation of the magnetic conductor 320 into the slot 130 in a more suitable manner, and can effectively limit the stator winding 200 contained in the slot 130.

[0083] While performing its magnetic guiding function, the magnetically conductive component 320 eliminates as much magnetic leakage potential as possible, thereby helping to optimize the magnetic circuit and improve the overall operational reliability of the machine. Furthermore, the cooperation between the non-magnetically conductive substrate 310 and the magnetically conductive component 320 helps to appropriately reduce the amount of magnetically conductive structure required, thereby helping to reduce eddy current phenomena during the operation of the machine and ultimately improving the overall operating efficiency.

[0084] During assembly, the additionally protruding inner edge section 312 of the base component 310 can be fitted and inserted with the inner ring oil sealing plate 400, which helps to further increase the assembly stability of the stator slot wedge 300. On the other hand, the interlocking connection also helps to improve the sealing performance between the stator slot wedge 300 and the inner ring oil sealing plate 400.

[0085] Next, by setting at least a portion of the surface of the insertion joint to be inclined relative to the axial direction, an inclined surface for coating the adhesive can be formed. The formation of this inclined surface provides a sufficiently large surface area to accommodate more adhesive, helping to enhance the insertion strength at that location. Furthermore, it can decompose the axial magnetic pull, preventing uneven coating or adhesive overflow caused by excessive unidirectional magnetic pull, thus reducing the bonding effect. This application contributes to improving the overall operating performance of the machine.

[0086] The circumferential dimension of the inner edge segment 312 is generally larger than that of the main body segment 311. Thus, when the magnetic conductor 320 is assembled to the main body segment 311, the radial outer end of the inner edge segment 312 and the radial inner end of the magnetic conductor 320 abut together.

[0087] To achieve the insertion, one of the main insertion part 313 and the main mating part 411 can be configured as a protruding structure, and the other as a recessed structure. And as... Figures 1 to 10In the structure shown, the main insertion part 313 can be configured as a protruding structure, and the main mating part 411 as a groove structure. Since the inner ring oil sealing plate 400 is a single, integrated structure, while the stator slot wedge 300 consists of multiple discrete, integrated structures, this configuration simplifies the molding of the inner ring oil sealing plate 400 and avoids excessively increasing the molding burden on the stator slot wedge 300.

[0088] Of course, for ease of understanding, in the following embodiments, the main insertion part 313 is a protruding structure and the main mating part 411 is a groove structure, as an example for explanation.

[0089] The inner edge section 312 may be partially protruding to define the main insertion portion 313 (protruding structure). Thus, when the main insertion portion 313 and the main mating portion 411 are inserted into place, a portion of the inner edge section 312 remains exposed outside the inner ring oil sealing plate 400. That is, it is exposed between the radially outer end of the inner ring oil sealing plate 400 and the radially inner end of the tooth portion 120, forming an intermediate section. This intermediate section can also be appropriately extended circumferentially as needed, allowing the intermediate sections of each stator slot wedge 300 to be connected separately, achieving enclosure under the filling of the adhesive, thereby fitting and filling the assembly gap between the inner ring oil sealing plate 400 and the stator core 100.

[0090] Alternatively, the inner edge segment 312 can also form the main insertion part 313 as a whole. That is, when the main insertion part 313 and the main mating part 411 are inserted into place, the inner edge segment 312 is embedded into the inner ring oil sealing plate 400. At this time, the assembly abutment between the inner edge segment 312 and the magnetic conductor 320, and the assembly abutment between the inner ring oil sealing plate 400 and the tooth 120 are roughly connected to form a complete circle.

[0091] Furthermore, in one embodiment, the inner edge segment 312 has a first insertion portion 314 at the radially inner end of the main insertion portion 313. The main mating portion 411 has a first mating portion 412 at a corresponding position. The first insertion portion 314 and the first mating portion 412 are fitted together.

[0092] Similarly, one of the first insertion portion 314 and the first mating portion 412 can be configured as a protruding structure, and the other can be configured as a recessed structure. For example Figures 1 to 4 ,as well as Figures 9 to 10 As shown, specifically, the first insertion part 314 can be configured as a protruding structure, and the first mating part 412 can be configured as a groove structure.

[0093] Taking the stator slot wedge 300 as an example, a first insertion portion 314 is further provided at the main insertion portion 313. Regardless of whether the first insertion portion 314 is a raised structure or a recessed structure relative to the main insertion portion 313, the tortuosity and contact area of ​​the assembly contact surface between the main insertion portion 313 and the main mating portion 411 can be further increased. This can enhance the sealing performance and adhesive capacity at the contact point. Furthermore, the more tortuous contact makes it easier to achieve multi-directional contact between the two, thus enabling the main insertion portion 313 and the main mating portion 411 to mutually stop and limit each other in multiple directions. Ultimately, this helps to enhance the connection strength between the inner edge section 312 and the inner ring oil sealing plate 400.

[0094] Among them, such as Figure 4 and Figure 10 As shown, specifically, when the first insertion part 314 is configured as a protruding structure and the first mating part 412 is configured as a matching groove structure, the first insertion part 314 has a first shaft end surface 314a flush with the groove opening of the slot 130, two first circumferential side surfaces 314b connected to the circumferential sides of the first shaft end surface 314a, and a first radial end surface 314c connected to the first shaft end surface 314a and the two first circumferential side surfaces 314b.

[0095] In one embodiment, the first radial end surface 314c extends obliquely relative to the axial direction. The mating surface of the first mating portion 412 corresponding to the first radial end surface 314c can also be configured as an oblique surface. This increases the radial connection strength between the inner edge segment 312 and the inner ring sealing plate 400 as described above. Furthermore, the synergistic adhesive helps eliminate radial assembly gaps between the two.

[0096] And / or in one embodiment, at least one first circumferential side surface 314b extends obliquely relative to the axial direction. The mating surface of the first mating portion 412 corresponding to the first circumferential side surface 314b can also be configured as an oblique surface. This increases the connection strength between the inner edge segment 312 and the inner ring oil sealing plate 400 on both sides in the circumferential direction, as described above. Furthermore, the synergistic adhesive helps eliminate assembly gaps between the two in the circumferential direction.

[0097] In a further embodiment, the inclination directions of the two first peripheral surfaces 314b of the same first insertion portion 314 can be exactly opposite. That is, one first peripheral surface 314b is inclined toward one shaft end of the whole machine, and the other first shaft surface can be inclined toward the other shaft end of the whole machine.

[0098] And / or in one embodiment, the radially inner end of the main insertion portion 313 has two second radial end surfaces 316 disposed on the circumferential sides of the first insertion portion 314. At least one of the second radial end surfaces 316 extends obliquely relative to the axial direction. The two second radial end surfaces 316 are generally symmetrically arranged about the first insertion portion 314, that is, their size, shape, etc. are kept as consistent as possible, so as to further balance the force at the first insertion portion 314.

[0099] When, as described above, the first radial end surface 314c extends obliquely relative to the axial direction, and the second radial end surface 316 extends obliquely relative to the axial direction, specifically, as... Figure 4 As shown, the inclination direction of the first radial end surface 314c is opposite to that of the second radial end surface 316. That is, when the first radial end surface 314c is inclined toward one shaft end of the machine, the second radial end surface 316 can be inclined toward the other shaft end of the machine. In this way, when assembled to the inner ring oil sealing plate 400, the force directions at the first radial end surface 314c and the second radial end surface 316 are approximately opposite, which can form opposite constraints, ensuring the overall force balance of the stator slot wedge 300 and the inner ring oil sealing plate 400.

[0100] Based on one or more of the above embodiments, further, in conjunction with... Figure 4 and Figure 10 The inner edge section 312 has a second insertion part 315 on each of its two circumferential sides, and a second mating part 413 is provided at the corresponding position of the main mating part 411. The second insertion part 315 and the second mating part 413 are adapted to be inserted.

[0101] Similarly, one of the second insertion portion 315 and the second mating portion 413 can be configured as a protruding structure, and the other can be configured as a recessed structure. For example Figure 4 and Figure 10 As shown, specifically, the second insertion part 315 can be configured as a protruding structure, and the second mating part 413 can be configured as a groove structure.

[0102] Taking the stator slot wedge 300 as an example, a second insertion portion 315 is further provided at the main insertion portion 313. Regardless of whether the second insertion portion 315 is a raised structure or a recessed structure relative to the main insertion portion 313, the tortuosity and contact area of ​​the assembly contact surface between the main insertion portion 313 and the main mating portion 411 can be further increased. This, in turn, enhances the sealing performance and adhesive capacity at the contact point. Furthermore, the more tortuous contact makes it easier to achieve multi-directional contact between the two, thus enabling the main insertion portion 313 and the main mating portion 411 to mutually stop and limit each other in multiple directions. Ultimately, this helps to enhance the connection strength between the inner edge section 312 and the inner ring oil sealing plate 400.

[0103] Furthermore, the insertion directions of the second insertion portion 315 and the second mating portion 413 are different from the insertion directions of the first insertion portion 314 and the first mating portion 412, as well as the insertion directions of the main insertion portion 313 and the main mating portion 411. Therefore, the mutual insertion of the second insertion portion 315 and the second mating portion 413 enhances the circumferential mutual limiting effect between the inner edge section 312 and the inner ring oil sealing plate 400.

[0104] Among them, such as Figure 4 and Figure 10 As shown, specifically, when the second insertion portion 315 is configured as a protruding structure and the second mating portion 413 is configured as a matching groove structure, the second insertion portion 315 has a second shaft end surface 315a and a third shaft end surface 315b arranged opposite each other along the axial direction, and a second peripheral side surface 315c connecting the second shaft end surface 315a and the third shaft end surface 315b. Based on this, at least the second shaft end surface 315a extends obliquely relative to the axial direction, which can enhance the connection strength between the inner edge segment 312 and the inner ring oil sealing plate 400 as described above.

[0105] It should be noted that when the magnetic conductor 320 is provided with a rib 321 as described above, the rib 321 and the protruding structure of the second insertion part 315 can be uniformly set, that is, set to a structure with approximately the same size and shape, so that the rib 321 can extend radially inward to fully match the protruding structure of the second insertion part 315. In this way, it helps to make the overall outline of the stator slot wedge 300 smooth and the structure balanced and unified.

[0106] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A stator slot wedge, characterized in that, include: A base member, made of a non-magnetic material, includes a main body section for placement within a slot in a stator core, and an inner edge section protruding from the radially inner end of the main body section; and, A magnetic conductive element, made of a magnetically conductive material, is assembled at least at the main body section and is used to insert into the side wall of the slot. The inner edge segment is provided with a main insertion part at a position radially away from the main body segment. The main insertion part is used to insert with the main mating part provided in the inner ring oil sealing plate. The insertion part is fixed by adhesive bonding. At least a part of the surface of the insertion part extends obliquely relative to the axial direction.

2. The stator slot wedge as described in claim 1, characterized in that, The main connector is configured as a raised structure, and the inner edge segment constitutes the main connector as a whole. The main mating part is configured with a matching groove structure.

3. The stator slot wedge as described in claim 1, characterized in that, The inner edge segment is provided with a first insertion part at the radial inner end of the main insertion part, and the first insertion part is used to insert with the first mating part provided in the main mating part.

4. The stator slot wedge as described in claim 3, characterized in that, The first insertion part is configured as a protruding structure, and the first mating part is configured as a matching groove structure; The first insertion part has a first shaft end surface flush with the slot opening, two first circumferential side surfaces connected to the two circumferential sides of the first shaft end surface, and a first radial end surface connecting the first shaft end surface and the two first circumferential side surfaces. Wherein, the first radial end surface extends obliquely relative to the axial direction; and / or, At least one of the first peripheral side surfaces extends obliquely relative to the axial direction.

5. The stator slot wedge as described in claim 3, characterized in that, The first insertion part is configured as a protruding structure, and the first mating part is configured as a matching groove structure; The radial inner end of the main connector has two second radial end surfaces disposed on the circumferential sides of the first connector, and at least one of the second radial end surfaces extends obliquely relative to the axial direction.

6. The stator slot wedge as described in claim 4, characterized in that, The first radial end surface extends at an angle relative to the axial direction; The radial inner end of the main plug has two second radial end surfaces disposed on the circumferential sides of the first plug, and at least one of the second radial end surfaces extends obliquely relative to the axial direction. The tilt direction of the first radial end surface is opposite to that of the tilt direction of the second radial end surface.

7. The stator slot wedge as described in claim 1, characterized in that, The inner edge segment is provided with a second insertion part on each of its two circumferential sides, and the second insertion part is used to insert with the second mating part provided on the main mating part.

8. The stator slot wedge as described in claim 7, characterized in that, The second insertion part is configured as a protruding structure, and the second mating part is configured as a matching groove structure; The second insertion portion has a second shaft end surface and a third shaft end surface that are arranged opposite to each other along the axial direction, and a second peripheral side surface that connects the second shaft end surface and the third shaft end surface; At least the second shaft end surface extends at an angle relative to the axial direction.

9. A stator module, characterized in that, include: The stator core includes a yoke arranged in a ring shape and a plurality of teeth protruding from one axial side of the yoke. The teeth are arranged circumferentially at intervals, and a slot is defined between every two adjacent teeth. The stator windings are wound one-to-one on each of the aforementioned teeth; As described in any one of claims 1 to 8, a plurality of stator slot wedges are provided corresponding to each of the slots, and the main body segment and the magnetic conductive element in each stator slot wedge are assembled at the corresponding slot and cover the slot opening; as well as, An inner ring oil sealing plate is disposed within the ring of the stator core. The inner ring oil sealing plate is provided with a main mating part, and the structure of the inner ring oil sealing plate is adapted to the structure of the stator slot wedge.

10. A disc motor, characterized in that, Includes a rotor module and a stator module as described in claim 9; The stator module has one; or... The stator module is provided in two parts, and the two stator modules are disposed on both sides of the rotor module along the axial direction.

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