CN115528843A - Motor assembly - Google Patents

Abstract

The invention belongs to the technical field of motors, and discloses a motor assembly which comprises a shell, a rotor assembly, a stator assembly and an output shaft. Rotor subassembly and stator module all set up in the casing, and outside the rotor subassembly was located to the stator module cover, the output shaft was connected with the rotor subassembly. Stator module includes stator core, skeleton, stator insulation cover and a plurality of stator winding, and stator insulation cover includes the bottom plate of centre trompil and is located the turn-ups at bottom plate edge. When the stator insulation cover is installed, the bottom plate cover is arranged on the framework and covers the stator winding, the flanging is arranged on the periphery of the framework in a surrounding mode, and the shell and the framework clamp and fix the stator insulation cover, so that the stator insulation cover is convenient to install. The motor assembly can be assembled more simply through the stator insulating cover, the labor intensity of workers is reduced, good creepage and insulation can be formed, materials are reduced, and the overall cost of the motor assembly is reduced; in addition, the bottom plate and the flanging of the stator insulating cover are integrally formed, the mounting efficiency is improved, and the strength is effectively guaranteed.

Description

Motor assembly

Technical Field

The invention relates to the technical field of motors, in particular to a motor assembly.

Background

The stator assembly of the motor mainly comprises a stator core, a stator winding and a stator insulating cover. In the prior art, the stator winding end is provided with the stator insulation cover to integrally insulate the inner ring, the outer ring and the top of the stator winding end, but most of the stator insulation covers in the prior art are formed by splicing two semicircular clamping grooves and cover the stator winding. This stator insulating boot assembling process is loaded down with trivial details, is unfavorable for improving assembly efficiency.

Disclosure of Invention

The invention aims to provide a motor component, which is convenient to install a stator insulating cover, high in strength and capable of improving the assembly efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

an electric machine assembly, includes casing, rotor subassembly, stator module and output shaft, the rotor subassembly with stator module all sets up in the casing, the stator module cover is located outside the rotor subassembly, the output shaft with rotor subassembly fixed connection, stator module includes:

the stator core comprises a first annular main body and a plurality of embedded parts, and the plurality of embedded parts are circumferentially and convexly arranged on the inner side wall of the first annular main body;

the framework comprises a second annular main body and a plurality of convex teeth protruding inwards from the second annular main body in the radial direction, the convex teeth are arranged around the second annular main body in the circumferential direction, hollow cavities are formed in the convex teeth, and the embedded parts are respectively inserted into the hollow cavities so that the framework is installed on the stator core;

each convex tooth is sleeved with one stator winding;

the stator insulating cover comprises a bottom plate with a hole in the middle and a flanging arranged on the edge of the bottom plate in a surrounding mode, the bottom plate covers the stator winding, the flanging is arranged on the periphery of the framework in a surrounding mode, the bottom plate and the flanging are integrally formed, and the shell and the framework are clamped and fixed in the stator insulating cover.

As an alternative, the side face of the flanging, which is away from the framework, is abutted against the inner side face of the shell.

As an alternative, the top surface of the casing is provided with an anti-slip rib, and the anti-slip rib is abutted to the bottom plate.

As an alternative, there is a gap between the burring and the stator core in the radial direction of the stator core.

As an alternative, the conducting wires of the stator winding form a wire harness, and the wire harness is bound to the side, away from the stator insulation cover, of the stator winding by using a binding tape.

As an alternative scheme, be provided with the ligature groove on the skeleton, the ligature trench is located deviate from in the empty cavity on one side diapire of stator insulating boot, the ligature groove is used for the accommodate part the ribbon.

As an alternative, be provided with the reference column on the skeleton, stator core's periphery is provided with first positioning groove, works as stator core with during the skeleton installation, the reference column with first positioning groove is just to setting up.

As an alternative, the skeleton includes two skeleton bodies that peg graft each other fixedly, two all be provided with a plurality of public slots and a plurality of female slot along its circumferencial direction skeleton body, it is same on the skeleton body public slot with female slot sets up in turn, two when skeleton body mutual fixed connection, one on the skeleton body public slot can with another on the skeleton body female slot pegs graft in order to constitute the dogtooth with empty core chamber.

As an alternative, be provided with the barb post on the skeleton, the barb post is provided with convex coupler body outwards, the enameled wire twine in the skeleton just is located on the barb post, the coupler body can be spacing the enameled wire.

As an alternative, the hook prevents the enameled wire from moving away from the stator insulation cover.

As an alternative, the motor assembly further comprises a coil outlet, the casing comprises a casing body and an end cover, the casing body is provided with an installation notch, and the installation notch and the end cover enclose an installation hole for installing the coil outlet;

go out the coil orientation the circumference lateral wall of installation breach is provided with the slot, the inner wall of installation breach is provided with the chimb, the chimb can be gone into in the slot.

As an alternative, the cover is equipped with the sealing washer on the end cover, the slot is followed the circumference that goes out the coil extends and is the annular, the sealing washer can be blocked go out the coil orientation in the slot of the one side of end cover.

As an alternative, the outlet coil is made of an elastic material, and the height of the outlet coil in the axial direction of the output shaft is larger than the depth of the mounting notch.

The invention has the beneficial effects that:

the invention provides a motor component.A stator insulating cover installed on the motor component comprises a bottom plate with a hole in the middle and a flange arranged around the edge of the bottom plate. When the stator insulation cover is installed, the bottom plate cover is arranged on the framework and covers the stator winding, the flanging is arranged on the periphery of the framework in a surrounding mode, and the shell and the framework clamp and fix the stator insulation cover, so that the stator insulation cover is convenient to install. The motor component can be assembled more simply through the stator insulating cover, the labor intensity of workers is reduced, good creepage and insulation can be formed, materials are reduced, and the overall cost of the motor component is reduced; in addition, the bottom plate and the flanging of the stator insulating cover are integrally formed, the mounting efficiency is improved, and the strength is effectively guaranteed.

Drawings

FIG. 1 is a first schematic structural diagram of a motor assembly according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a frame according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a stator core according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a stator winding according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a stator insulation cover according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a housing according to an embodiment of the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 1;

FIG. 8 is a second structural diagram of a motor assembly according to an embodiment of the present invention;

FIG. 9 is an enlarged view of the structure at B in FIG. 2;

FIG. 10 is an enlarged view of the structure at C in FIG. 8;

FIG. 11 is a schematic structural diagram of a skeletal body according to an embodiment of the present invention;

FIG. 12 is an enlarged view of the structure of FIG. 8 at D;

fig. 13 is an enlarged view of the structure at E in fig. 8.

In the figure:

1. a housing; 11. a housing; 111. anti-skid ribs; 112. installing a notch; 1121. a convex edge; 12. an end cap; 121. a seal ring;

2. a rotor assembly;

3. a stator assembly; 31. a stator core; 311. an insertion section; 312. a first positioning groove; 32. a framework; 321. convex teeth; 3211. a hollow cavity; 322. binding a groove; 323. a positioning column; 324. a skeleton body; 3241. a male slot; 3242. a female slot; 325. a barb post; 33. a stator winding; 331. a wire harness; 34. a stator insulating cover; 341. a base plate; 342. flanging; 35. a gap;

4. an output shaft;

5. binding;

6. enamelled wires;

7. coil discharging; 71. and (4) a groove.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 to 13, an embodiment of the present invention provides an electric motor assembly including a housing 1, a rotor assembly 2, a stator assembly 3, and an output shaft 4. Wherein, stator module 3 is fixed to be set up in casing 1, and rotor subassembly 2 rotationally sets up in casing 1, and is located stator module 3 inside, is provided with the action wheel on the output shaft 4 to with rotor subassembly 2 fixed connection. After the motor element circular telegram, stator module 3 produces rotating magnetic field and acts on rotor module 2 so that rotor module 2 produces and rotates, and then drives output shaft 4 and rotates, and the action wheel on the output shaft 4 is connected with other part transmissions to transmit this motor element's motion to other parts.

With continued reference to fig. 2-7, the stator assembly 3 includes a stator core 31, a bobbin 32, a stator insulation cover 34, and a plurality of stator windings 33. The stator core 31 includes a first annular main body and a plurality of embedded portions 311, wherein the plurality of embedded portions 311 are circumferentially and uniformly protruded on the inner side wall of the first annular main body; the framework 32 comprises a second annular body and a plurality of convex teeth 321 protruding inwards from the second annular body in the radial direction, the plurality of convex teeth 321 are uniformly arranged around the second annular body in the circumferential direction, and a hollow cavity 3211 corresponding to the embedded part 311 is arranged in each convex tooth 321; when the frame 32 is installed in the stator core 31, the plurality of embedding portions 311 are respectively inserted into and clamped in the plurality of hollow cavities 3211; the plurality of stator windings 33 are arranged in one-to-one correspondence with the plurality of convex teeth 321, each convex tooth 321 is sleeved with one stator winding 33, the stator windings 33 are used for generating a rotating magnetic field, and the plurality of stator windings 33 are uniformly arranged on the plurality of convex teeth 321 to generate a uniform magnetic field; the stator insulation cover 34 comprises a bottom plate 341 with a hole in the middle and a flange 342 surrounding the edge of the bottom plate 341, when the bottom plate 341 covers the stator winding 33, the stator winding 33 is insulated from the casing 1, the hole in the middle does not affect the insulation effect and the creepage performance, the material consumption is reduced, and the cost is reduced; the flange 342 is arranged around the framework 32, the stator insulation cover 34 is clamped between the casing 1 and the framework 32, and the casing 1 and the framework 32 can clamp and fix the stator insulation cover 34 so as to further prevent the stator insulation cover 34 from shaking; in addition, the bottom plate 341 and the turned edge 342 are integrally formed, so that the structural strength is ensured, and the processing efficiency and the installation efficiency are improved.

Further, the side of the flange 342 facing away from the frame 32 abuts against the inner side of the housing 1. The casing 1 comprises a casing 11 and an end cover 12, wherein the casing 11 and the end cover 12 are fixedly connected through a screw connection mode to form the casing 1. When the installation, in pressing stator insulating boot 34 into casing 11, bottom plate 341 of stator insulating boot 34 and the top surface butt of casing 11, turn-ups 342 deviates from the side of skeleton 32 and the medial surface butt of casing 11, turn-ups 342 adopts transition fit with casing 11 promptly, has certain assembly strength between the two to make stator insulating boot 34 can not fall out after pressing into in the casing 11, this structure makes the assembly simple and convenient.

In order to ensure that the position where the stator insulating cover 34 is pressed into the housing 11 is accurate, and further enhance the fixing firmness of the stator insulating cover 34 and the housing 11, referring to fig. 6, an anti-slip rib 111 is arranged on the top surface of the housing 11, when the stator insulating cover 34 is pressed into the housing 11, the bottom plate 341 is abutted against the anti-slip rib 111, the anti-slip rib 111 can limit the distance that the stator insulating cover 34 is pressed into the housing 11, and the anti-slip rib 111 can prevent the stator insulating cover 34 from rotating. Further, the anti-skid ribs 111 are provided in a plurality, and the plurality of anti-skid ribs 111 are circumferentially distributed on the top surface of the housing 11.

In order to ensure that the stator insulation cover 34 is prevented from being deformed by pressure when being mounted, referring to fig. 7, a gap 35 is provided between the burring 342 of the stator insulation cover 34 and the stator core 31, and the gap 35 can ensure that the burring 342 does not interfere with the stator core 31.

As shown in fig. 11, the framework 32 includes two framework bodies 324 fixed to each other by inserting, the two framework bodies 324 are respectively provided with a plurality of male slots 3241 and a plurality of female slots 3242 along the circumferential direction thereof, the male slots 3241 and the female slots 3242 on the same framework body 324 are alternately arranged, and when the two framework bodies 324 are fixedly connected to each other, the male slot 3241 on one framework body 324 can be inserted into the female slot 3242 on the other framework body 324 to form the convex tooth 321 and the hollow cavity 3211 of the framework 32. According to the structure, only two identical framework bodies 324 need to be processed, and the framework 32 can be formed by mutually inserting the two framework bodies 324, so that the processing procedures are reduced, and the manufacturing efficiency is improved.

With continued reference to fig. 7, the plurality of stator windings 33 are connected to each other by a wire, and the plurality of wires form a wire harness 331 led out from the inside to the outside of the motor assembly, and in order to fix the wire harness 331 located inside the motor assembly, the wire harness 331 is bound to a side of the stator windings 33 facing away from the stator insulating cover 34 by a binding tape 5.

Referring to fig. 2 in combination with fig. 11, in order to prevent the cable tie 5 from moving around the circumferential direction of the second annular main body of the frame 32, a binding groove 322 is provided on the frame body 324 at a position close to the lead-out position of the wiring harness 331, the binding groove 322 is located on a bottom wall of one side of the hollow cavity 3211 facing away from the stator insulation cover 34, that is, the binding groove 322 is provided between the male insertion groove 3241 and the female insertion groove 3242 and radially extends to a baffle between the male insertion groove 3241 and the female insertion groove 3242, and the cable tie 5 is limited in the binding groove 322 to bind the wiring harness 331. This structure has not only restricted the removal of ribbon 5, and is more convenient when ligature ribbon 5, only needs to pass ribbon 5 ligature groove 322 and can fix pencil 331, and ribbon 5 does not take place to interfere with skeleton 32. In this embodiment, the depth and width of ligature groove 322 are greater than the thickness and width of ribbon 5 to make ribbon 5 and ligature groove 322 be clearance 35 cooperation, it is more convenient to make to wear to establish ligature 5.

As shown in fig. 8 to 10, the frame 32 is provided with positioning posts 323, the outer periphery of the stator core 31 is provided with first positioning slots 312, and when the stator core 31 is mounted on the frame 32, the positioning posts 323 are arranged to face the first positioning slots 312. When the stator core 31 and the framework 32 are installed, the axis of the positioning column 323 is aligned with the central line of the first positioning groove 312, so that the framework 32 is inserted into the stator core 31, and the relative position of the framework 32 and the stator core 31 is accurate.

The winding has enameled wire 6 on skeleton 32, and enameled wire 6 is located the one side that sets up pencil 331 on skeleton 32, and enameled wire 6 is used for forming the winding, in order to prevent that enameled wire 6 from breaking away from skeleton 32, refer to fig. 7, and skeleton 32 is provided with barb post 325 towards the one end of pencil 331, and barb post 325 is provided with outside convex coupler body, and enameled wire 6 twines on skeleton 32 and pastes and lean on barb post 325, and the coupler body can spacing enameled wire 6. In this embodiment, the barbed post 325 is located on the inner side of the second annular body of the framework 32, and the hook is disposed perpendicular to the barbed post 325 and does not exceed the outer side of the second annular body of the framework 32, so as to save space and material cost.

Further, a hook is disposed at an end of the barb 325 away from the framework 32, and the hook is used for preventing the enameled wire 6 from moving away from the stator insulation cover 34. It can be understood that the barbed post 325 is disposed inside the second annular body of the framework 32, and when the enameled wire 6 is wound on the framework 32 and is attached to the barbed post 325, the enameled wire 6 is confined between the hook body and the second annular body.

Rotor subassembly 2 includes magnet steel and rotor core, and the magnet steel passes through glue bonding with rotor core and fixes.

The center of the end cover 12 is provided with a PCB board for signal conversion, the PCB board is provided with a signal output structure, and the signal output line and the wiring harness 331 are both required to be led out of the motor assembly. In order to facilitate the derivation of the signal output line and the wiring harness 331, referring to fig. 8, fig. 12 to fig. 13, the motor assembly further includes a coil 7, the housing 11 is provided with an installation notch 112, when the housing 11 is fixedly connected with the end cover 12, the installation notch 112 and the end cover 12 enclose an installation hole for installing the coil 7, in order to enhance the sealing performance of the coil 7 and the installation notch 112, a circumferential side wall of the coil 7 facing the installation notch 112 is provided with a groove 71, an inner wall of the installation notch 112 is provided with a convex edge 1121, when the coil 7 is installed in the installation notch 112, the convex edge 1121 can be clamped into the groove 71, the convex edge 1121 is in interference fit with the groove 71, and thus, a good sealing performance can be provided between the coil 7 and the installation notch 112.

Go out the one end that coil 7 and installation breach 112 are connected and be the cuboid structure, three circumference lateral wall of coil 7 all is provided with slot 71, installation breach 112 is the rectangle breach, its three inner wall all is provided with chimb 1121, in order to further improve the leakproofness, be provided with slot 71 on the fourth circumference lateral wall of coil 7, slot 71 is the annular along the circumference extension of coil 7, be provided with sealing washer 121 on the end cover 12, coil 7 and installation breach 112 installation back of being qualified for the next round of competitions, end cover 12 is connected with casing 11, sealing washer 121 can block in the slot 71 on the fourth circumference lateral wall of coil 7, in order to form good sealed effect, in order to improve waterproof performance. In the present embodiment, the seal ring 121 is a rubber seal ring 121.

Furthermore, the coil-out 7 is made of an elastic material, so that the coil-out 7 can be flexibly deformed, and the coil-out 7 is preferably made of rubber which has flexibility and corrosion resistance. The height of the coil 7 in the axial direction of the output shaft 4 is greater than the depth of the mounting notch 112. When the housing 11 is mounted with the end cap 12, the end cap 12 and the housing 11 can press the coil 7 out to make the sealing performance better.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a motor element, includes casing (1), rotor subassembly (2), stator module (3) and output shaft (4), rotor subassembly (2) with stator module (3) all set up in casing (1), stator module (3) cover is located outside rotor subassembly (2), output shaft (4) with rotor subassembly (2) fixed connection, its characterized in that, stator module (3) include:

the stator core (31) comprises a first annular main body and a plurality of embedded parts (311), wherein the embedded parts (311) are circumferentially and convexly arranged on the inner side wall of the first annular main body;

a bobbin (32) including a second annular body and a plurality of teeth (321) protruding radially inward from the second annular body, the plurality of teeth (321) being circumferentially disposed around the second annular body, a hollow cavity (3211) being provided in the teeth (321), and a plurality of insertion portions (311) being respectively inserted into the plurality of hollow cavities (3211) to mount the bobbin (32) to the stator core (31);

a plurality of stator windings (33), wherein each convex tooth (321) is sleeved with one stator winding (33);

stator insulating boot (34), including bottom plate (341) of middle trompil with enclose and locate bottom plate (341) marginal turn-ups (342), bottom plate (341) cover in on stator winding (33), turn-ups (342) enclose and locate the periphery of skeleton (32), bottom plate (341) with turn-ups (342) integrated into one piece, casing (1) with skeleton (32) clamp is fixed stator insulating boot (34).

2. The motor assembly according to claim 1, characterized in that the side of the flange (342) facing away from the frame (32) abuts against the inner side of the machine housing (1).

3. The electric machine assembly according to claim 1, characterized in that a non-slip rib (111) is provided on the top surface of the machine housing (1), the non-slip rib (111) abutting against the bottom plate (341).

4. An electric machine assembly according to claim 1, characterized in that there is a gap (35) between the flange (342) and the stator core (31) in the radial direction of the stator core (31).

5. An electric machine assembly according to any one of claims 1-4, characterised in that the wires of the stator winding (33) constitute a wire bundle (331), which wire bundle (331) is bound to the side of the stator winding (33) facing away from the stator insulation cover (34) with a binding tape (5);

preferably, a binding groove (322) is arranged on the framework (32), the binding groove (322) is positioned on the bottom wall of one side, deviating from the stator insulating cover (34), in the hollow cavity (3211), and the binding groove (322) is used for accommodating a part of the binding belt (5).

6. An electric machine assembly according to any one of claims 1-4, characterized in that the framework (32) is provided with positioning posts (323), the periphery of the stator core (31) is provided with first positioning slots (312), and when the stator core (31) is mounted with the framework (32), the positioning posts (323) are arranged opposite to the first positioning slots (312).

7. The motor assembly according to any one of claims 1 to 4, wherein the frame (32) comprises two frame bodies (324) fixed to each other in an inserting manner, each of the two frame bodies (324) is provided with a plurality of male slots (3241) and a plurality of female slots (3242) along a circumferential direction thereof, the male slots (3241) and the female slots (3242) on the same frame body (324) are alternately arranged, and when the two frame bodies (324) are fixedly connected to each other, the male slot (3241) on one frame body (324) can be inserted into the female slot (3242) on the other frame body (324) to form the protruding tooth (321) and the hollow cavity (3211).

8. The motor assembly according to any one of claims 1 to 4, characterized in that a barb pillar (325) is arranged on the framework (32), the barb pillar (325) is provided with a hook body protruding outwards, the enameled wire (6) is wound on the framework (32) and is positioned on the barb pillar (325), and the hook body can limit the enameled wire (6);

preferably, the hook prevents the enameled wire (6) from moving away from the stator insulation cover (34).

9. The motor assembly according to any one of claims 1-4, further comprising a coil outlet (7), wherein the housing (1) comprises a housing (11) and an end cover (12), the housing (11) is provided with a mounting notch (112), and the mounting notch (112) and the end cover (12) enclose a mounting hole for mounting the coil outlet (7);

a groove (71) is formed in the circumferential side wall, facing the installation notch (112), of the coil outlet (7), a convex edge (1121) is arranged on the inner wall of the installation notch (112), and the convex edge (1121) can be clamped into the groove (71);

preferably, the end cover (12) is sleeved with a sealing ring (121), the groove (71) is annular along the circumferential extension of the coil outlet (7), and the sealing ring (121) can be clamped into the groove (71) of the coil outlet (7) facing to one surface of the end cover (12).

10. The motor assembly according to claim 9, characterized in that the outlet coil (7) is made of an elastic material, and the height of the outlet coil (7) in the axial direction of the output shaft (4) is greater than the depth of the mounting notch (112).

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