CN220022454U - Insulating wire frame, stator assembly and motor - Google Patents

Abstract

The utility model provides an insulating wire frame, a stator assembly and a motor, wherein the insulating wire frame comprises: a first bracket provided with a first passage penetrating in a first direction, the first passage being configured to be adapted to mount a first core, an outer surface of the first bracket being formed as a first mounting surface; and a second bracket provided with a second passage penetrating in the first direction, the second passage being configured to be adapted to mount the second core, an outer surface of the second bracket being formed as a second mounting surface, the first bracket being connected to the second bracket such that the first passage communicates with the second passage, and the first mounting surface and the second mounting surface being adapted to mount the coil. The insulating wire frame of this embodiment can be with iron core and coil interval completely, avoids iron core and coil contact in the assembly process to avoid the burr on the iron core to scratch the coil, effectively protect the coil.

Description

Insulating wire frame, stator assembly and motor

Technical Field

The utility model relates to the technical field of motors, in particular to an insulating wire frame, a stator assembly with the insulating wire frame and a motor with the stator assembly.

Background

In the prior art, a stator in a motor can adopt a split type iron core, namely the iron core can comprise two iron core halves, the two iron core halves need to be inserted into coils from two ends of a coil formed by winding in the process of assembling the iron core and the coils, and the coils after being inserted can be wound on the periphery side of the iron core. However, burrs on the iron core easily scratch the coil during insertion of the iron core into the coil, affecting the insulation performance of the coil.

Disclosure of Invention

The utility model aims to provide a novel technical scheme of an insulating wire frame, which at least can solve the problem that a coil is easy to break by an iron core in the prior art.

It is a further object of the present utility model to provide a stator assembly comprising the above-described insulated wire frame.

It is a further object of the present utility model to provide an electric machine comprising the stator assembly described above.

According to a first aspect of the present utility model, there is provided an insulated wire holder comprising: a first bracket provided with a first passage penetrating in a first direction, the first passage being configured to be adapted to mount a first core, an outer surface of the first bracket being formed as a first mounting surface; and a second bracket provided with a second passage penetrating in the first direction, the second passage being configured to be adapted to mount a second core, an outer surface of the second bracket being formed as a second mounting surface, the first bracket being connected to the second bracket so that the first passage communicates with the second passage, and the first mounting surface and the second mounting surface being adapted to mount a coil.

Optionally, a first end of the first support away from the second support is provided with a first isolation part, a first end of the second support away from the first support is provided with a second isolation part, and the first mounting surface and the second mounting surface are arranged between the first isolation part and the second isolation part.

Optionally, the number of the first isolation parts and the second isolation parts is two, the two first isolation parts are spaced apart along the second direction and protrude outwards, and the two second isolation parts are spaced apart along the second direction and protrude outwards.

Optionally, the first spacer is formed as an annular boss protruding outwardly along an outer surface of the first bracket, and the second spacer is formed as an annular boss protruding outwardly along an outer surface of the second bracket.

Optionally, the first isolation part and the second isolation part have the same shape.

Optionally, the second end of the first bracket is detachably connected to the second end of the second bracket.

Optionally, the inner surface of the second end of the first bracket is provided with a slot, the second end of the second bracket is provided with a plug-in part matched with the slot, and the plug-in part is detachably plugged in the slot.

Optionally, the depth of the slot in the first direction is equal to the length of the plugging portion in the first direction, and the thickness of the slot in the direction perpendicular to the first direction is equal to the thickness of the plugging portion in the direction perpendicular to the first direction.

Optionally, any one of the first mounting surfaces and a corresponding one of the second mounting surfaces are located on the same plane.

Optionally, the first bracket and the second bracket are respectively integrally formed insulating material pieces.

According to a second aspect of the present utility model, there is provided a stator assembly comprising an insulated wire frame as described in any one of the above embodiments; the first iron core is arranged in the first channel; the second iron core is arranged in the second channel; and the coil is arranged on the first mounting surface and the second mounting surface.

Optionally, one ends of the first iron core and the second iron core far away from each other in the first direction are respectively provided with stator teeth, a first end of the first support far away from the second support is provided with a first isolation part, a first end of the second support far away from the first support is provided with a second isolation part, and end parts of the first isolation part and the second isolation part are respectively provided with a sink groove suitable for installing the stator teeth.

Optionally, a positioning portion and a mating portion are respectively disposed on an end face of the first iron core and an end face of the second iron core facing each other, and the positioning portion mates with the mating portion to position the first iron core and the second iron core.

Optionally, the coil is spirally wound around an axial direction parallel to the first direction to form a mounting space having openings at both ends, and the first bracket and the second bracket extend into the mounting space from both the openings, respectively.

Optionally, the coil is wound by a flat wire, and a thickness direction of the flat wire is parallel to the first direction.

According to a third aspect of the present utility model there is provided an electrical machine comprising a stator assembly as in the above embodiments.

According to the insulating wire frame, the first iron core is installed through the first support, the second iron core is installed through the second support, the corresponding iron cores are covered by the corresponding channels on the two supports, the iron cores and the coils can be completely separated, the iron cores and the coils are prevented from being contacted in the assembly process, burrs on the iron cores are prevented from scratching the coils, the coils are effectively protected, the insulating wire frame formed by the two supports is simple in structure, easy to manufacture and assemble, and production efficiency is improved.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is an exploded view of an electric machine according to one embodiment provided by the present utility model;

FIG. 2 is a perspective view of a plurality of stator assemblies of an electric machine according to one embodiment provided by the present utility model;

FIG. 3 is a perspective view of a single stator assembly according to one embodiment provided by the present utility model;

fig. 4 is a perspective view of a first core and a second core according to one embodiment provided by the present utility model;

fig. 5 is a perspective view of an insulated wire frame according to one embodiment of the present utility model;

fig. 6 is a perspective view of a coil of a stator assembly according to one embodiment provided by the present utility model.

Reference numerals

A motor 1000;

a stator assembly 1; a front end cover 2; a rear end cover 3; back iron 4;

an insulating wire frame 100;

a first bracket 10; a first channel 11; a first opening 111; a second opening 112; a first mounting surface 12; a first isolation portion 13; a sink 14; a slot 15;

a second bracket 20; a second channel 21; a third opening 211; a fourth opening 212; a second mounting surface 22; a second isolation portion 23; a plug-in portion 25;

a first core 200; stator teeth 201; a groove 202; a protrusion 203; a second core 300;

a coil 400; the installation space 401.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

An insulated wire holder 100 according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, an insulated wire holder 100 according to an embodiment of the present utility model includes: a first bracket 10 and a second bracket 20.

Specifically, the first bracket 10 is provided with a first passage 11 penetrating in a first direction, the first passage 11 is configured to be adapted to mount the first core 200, the outer surface of the first bracket 10 is formed to the first mounting surface 12, the second bracket 20 is provided with a second passage 21 penetrating in the first direction, the second passage 21 is configured to be adapted to mount the second core 300, the outer surface of the second bracket 20 is formed to the second mounting surface 22, the first bracket 10 is connected to the second bracket 20 such that the first passage 11 communicates with the second passage 21, and the first mounting surface 12 and the second mounting surface 22 are adapted to mount the coil 400.

In other words, the insulated wire frame 100 according to the embodiment of the present utility model is mainly composed of the first bracket 10 and the second bracket 20. Wherein the insulation bobbin 100 may be used to mount the iron core and the coil 400, the iron core may be accommodated in the insulation bobbin 100, and the coil 400 may be wound on the insulation bobbin 100 such that the coil 400 surrounds the iron core and spaces the coil 400 from the iron core. In addition, the core may be mainly composed of the first core 200 and the second core 300, and the first core 200 and the second core 300 may be connected to form a complete core.

The first bracket 10 may be used to mount the first core 200, and the second bracket 20 may be used to mount the second core 300, and in particular, the first bracket 10 may have a first passage 11, the second bracket 20 may have a second passage 21, and both the first passage 11 and the second passage 21 extend in the first direction and penetrate the corresponding first bracket 10 or second bracket 20, respectively. Accordingly, in the first direction, the first passage 11 forms the first opening 111 at the first side of the first bracket 10 and the second opening 112 at the second side of the first bracket 10, the second passage 21 forms the third opening 211 at the first side of the second bracket 20, and the fourth opening 212 at the second side of the second bracket 20, when the first bracket 10 is connected with the second bracket 20, the second opening 112 may be connected opposite to the fourth opening 212, and the first opening 111 and the third opening 211 may be disposed opposite to each other.

In addition, the shape and size of the first and second passages 11 and 21 may be matched with the shape and size of the corresponding first or second core 200 or 300. For example, the first core 200 and the second core 300 may have a substantially quadrangular prism shape, four edges of the quadrangular prism may form a rounded transition, a cross section may have a substantially trapezoidal shape when the first core 200 or the second core 300 is cut along a direction perpendicular to the first direction, and four corners of the trapezoid may form a rounded transition. The first and second passages 11 and 21 may have a substantially quadrangular prism shape, and both end surfaces of the first and second passages 11 and 21 in the first direction may be formed as both bottom surfaces of the quadrangular prism, and inner wall surfaces of the first and second passages 11 and 21 may be formed as side surfaces of the quadrangular prism.

Alternatively, the first core 200 and the first channel 11 and the second core 300 and the second channel 21 may be tightly fitted, that is, the first core 200 and the second core 300 may be interference fitted in the corresponding first channel 11 or second channel 21. In the process of connecting the iron core and the insulating wire frame 100, the first iron core 200 can be pressed into the first channel 11, the second iron core 300 can be pressed into the second channel 21, the fixation of the mechanical structure is reduced, and the structure of the insulating wire frame 100 and the connection process of the iron core and the insulating wire frame 100 are facilitated to be simplified.

In addition, the outer surface of the first bracket 10 may be formed as a first mounting surface 12, the first mounting surface 12 may surround the first channel 11, the outer surface of the second bracket 20 may be formed as a second mounting surface 22, and the second mounting surface 22 may surround the second channel 21.

When the first bracket 10 and the second bracket 20 are connected, the first channel 11 and the second channel 21 may communicate to form a mounting channel, the mounting channel may extend in the first direction, the first mounting surface 12 and the second mounting surface 22 may be connected and cooperate to form a coil mounting surface, the coil mounting surface may be adapted to wind the coil 400, and the coil mounting surface may surround the mounting channel such that the coil 400 surrounds the core.

The connection process of the insulating bobbin 100 and the core and coil 400 of the present embodiment will be described in detail.

The coil 400 may be wound to a shape in which the installation space 401 is defined inside, the installation space 401 may be adapted to the coil installation surface, and both ends of the installation space 401 have openings; the first core 200 may then be inserted into the first channel 11 of the first bracket 10 and the second core 300 may be inserted into the second channel 21 of the second bracket 20; next, the first holder 10 accommodating the first iron core 200 may be inserted into the coil 400 from one end of the installation space 401, the second holder 20 accommodating the second iron core 300 may be inserted into the coil 400 from the other end of the installation space 401, and the first holder 10 and the second holder 20 may be connected in the installation space 401, and the connection of the first iron core 200 and the second iron core 300 may be completed while the connection of the first holder 10 and the second holder 20 is completed.

Therefore, according to the insulating wire frame 100 of the embodiment of the utility model, the first iron core 200 is installed by arranging the first bracket 10 and the second iron core 300 is installed by arranging the second bracket 20, the corresponding iron cores are covered by the corresponding channels on the two brackets, the iron cores and the coils 400 can be completely separated, the iron cores and the coils 400 are prevented from being contacted in the assembly process, the coils 400 are prevented from being scratched by burrs on the iron cores, the coils 400 are effectively protected, and the insulating wire frame 100 formed by the two brackets has a simple structure, is easy to manufacture and assemble, and is beneficial to improving the production efficiency.

According to one embodiment of the present utility model, a first end of the first bracket 10 away from the second bracket 20 is provided with a first isolation portion 13, a first end of the second bracket 20 away from the first bracket 10 is provided with a second isolation portion 23, and the coil mounting surface is disposed between the first isolation portion 13 and the second isolation portion 23.

Specifically, the first end of the first bracket 10 may be remote from the second bracket 20, that is, the first end of the first bracket 10 may correspond to the first opening 111, the first end of the second bracket 20 may be remote from the first bracket 10, that is, the first end of the second bracket 20 may correspond to the third opening 211, and the second end of the first bracket 10 may be opposite to the second end of the second bracket 20.

A first spacer 13 may be provided at a first end of the first bracket 10, a second spacer 23 may be provided at a second end of the first bracket 10, the first spacer 13 and the second spacer 23 may be spaced apart in a first direction, and the coil mounting surface may be located between the two spacers.

In the present embodiment, since the coil 400 is wound on the coil mounting surface, the first and second isolation portions 13 and 23 are provided at both ends of the coil mounting surface in the first direction, so that both ends of the coil 400 in the first direction can be separated from the iron core, the end of the iron core is prevented from contacting the end of the coil 400, and burrs of the iron core are prevented from scratching the coil 400.

In some embodiments of the present utility model, the number of the first and second spacers 13 and 23 is two, respectively, the two first spacers 13 are spaced apart in the second direction and protrude outward, and the two second spacers 23 are spaced apart in the second direction and protrude outward.

Specifically, as shown in fig. 5, the first mounting surface 12 and the second mounting surface 13 may have a first side, a second side, a third side, and a fourth side, respectively, disposed in order around the mounting channel, wherein the first side and the third side may be opposite, the second side and the fourth side may be opposite, a cross section of the first bracket 10 or the second bracket 20 when sectioned along the second direction may be substantially trapezoidal, the first side and the third side may form two oblique sides of the trapezoid, the second side and the fourth side may form a top side and a bottom side of the trapezoid, two first spacers 13 may be spaced apart and correspond to the first side and the third side of the first mounting surface 12, respectively, and two second spacers 23 may be spaced apart and correspond to the first side and the third side of the second mounting surface 22, respectively. Alternatively, the second direction may be any direction perpendicular to the first direction.

In this embodiment, the coil 400 may cooperate with the two first isolation portions 12 and the two second isolation portions 23 to limit the first bracket 10 and the second bracket 20, and the two first isolation portions 12 and the two second isolation portions 23 may effectively isolate the coil 400 from the iron core, so as to avoid the burrs on the iron core from scratching the coil 400.

According to other embodiments of the present utility model, the first spacer 13 is formed as an annular boss protruding outwardly along the outer surface of the first bracket 10, and the second spacer 23 is formed as an annular boss protruding outwardly along the outer surface of the second bracket 20.

Specifically, the first and second spacers 13 and 23 may be respectively formed as annular bosses, the first spacer 13 may protrude outwardly from the outer surface of the first end of the first bracket 10, and the second spacer 23 may protrude outwardly from the outer surface of the first end of the second bracket 20, that is, the first and second spacers 13 and 23 protrude outwardly from the coil mounting surface in a direction perpendicular to the first direction.

The first and second isolation parts 13 and 23 may be fitted with the coil mounting surface to form a mounting groove for accommodating the coil 400 on the outer surface of the insulating bobbin 100, the coil mounting surface may be formed as a groove bottom surface of the mounting groove, and two surfaces of the first isolation part 13 opposite to the second isolation part 23 may be formed as groove wall surfaces of the mounting groove, so that the inner side surface and two end surfaces of the coil 400 are surrounded by the two isolation parts and the coil mounting surface, a protection surface for the coil 400 is increased, the coil 400 and the iron core are further separated, and burrs on the iron core are prevented from scratching the coil 400.

In some embodiments of the present utility model, the first separator 13 is the same shape as the second separator 23. That is, the first isolation portion 13 and the second isolation portion 23 may form a substantially symmetrical structure, and the first isolation portion 13 and the second isolation portion are configured to have the same shape, so that both end surfaces of the coil 400 can be effectively protected, and the aesthetic property of the insulated wire frame 100 is improved.

According to other embodiments of the present utility model, the second end of the first bracket 10 is detachably connected to the second end of the second bracket 20, and the orthographic projection of the first bracket 10 in the second direction overlaps with the orthographic projection of the second bracket 20 in the second direction, and the second direction is perpendicular to the first direction.

The second ends of the two brackets are detachably connected, so that the two brackets and the two iron cores can be conveniently assembled. In the assembly process, the two brackets can be separated firstly, then the two brackets are connected with the corresponding iron cores, and then the two brackets are connected together to complete the connection between the two brackets and the corresponding two iron cores.

In addition, the second direction may be any direction perpendicular to the first direction, and the orthographic projections of the first bracket 10 and the second bracket 20 in the second direction may be partially overlapped, so that burrs on the iron core may be prevented from extending out of the seam between the two brackets to scratch the coil 400. For example, orthographic projections of a portion of one end of the first and second brackets 10, 20 toward each other in the second direction may overlap.

In some embodiments of the present utility model, the inner surface of the second end of the first bracket 10 is provided with a slot 15, the second end of the second bracket 20 is provided with a plugging portion 25 adapted to the slot 15, and the plugging portion 25 is detachably plugged into the slot 15.

That is, the second end of the first bracket 10 and the second end of the second bracket 20 may be detachably connected with the socket portion 25 through the insertion slot 15. Specifically, the slot 15 may be disposed at an inner ring of the second end of the first bracket 10, the insertion portion 25 may be disposed at an inner ring of the second end of the second bracket 20, that is, the slot 15 may be formed by the inner wall surface of the first passage 11 being recessed outward, and the insertion portion 25 may be formed by the outer surface of the second bracket 20 being recessed inward.

In addition, the slot 15 may correspond to the second opening 112, the slot 15 may correspond to the fourth opening 212, and the socket portion 25 may be inserted into the slot 15 to communicate the second opening 112 and the fourth opening 212 in the case that the first bracket 10 is connected to the second bracket 20.

In this embodiment, through setting up slot 15 and grafting portion 25 on two supports correspondingly, utilize slot 15 and grafting portion 25 detachable to be connected, can form mosaic structure, realize detachably between two supports and connect, simple structure easily makes and the assembly of being convenient for.

According to some alternative embodiments of the present utility model, the depth of the slot 15 in the first direction is equal to the length of the socket portion 25 in the first direction, and the thickness of the slot 15 perpendicular to the first direction is equal to the thickness of the socket portion 25 perpendicular to the first direction.

For convenience of explanation, it may be defined that the direction perpendicular to the first direction may be a radial direction of the insulation bobbin 100, that is, a radial direction of the first and second brackets 10 and 20 in a coupled state.

Specifically, in the first direction, the depth of the socket 15 may be the same as the depth of the socket 25, and in the radial direction of the insulating frame 100, the thickness of the socket 15 may be the same as the thickness of the socket 25, that is, the shape and size of the socket 15 and the socket 25 may be adapted. Therefore, when the slot 15 is connected with the plugging portion 25, the plugging portion 25 can be fully accommodated in the slot 15, so that the connection portion between the first bracket 10 and the second bracket 20 forms a smooth transition, and the protrusion 203 formed on the inner and outer surfaces of the insulating wire frame 100 is avoided to influence the assembly of the battery cell and the coil 400.

According to other embodiments of the utility model, any one of the first mounting surfaces 12 is coplanar with a corresponding one of the second mounting surfaces 22.

Specifically, the first mounting surface 12 and the second mounting surface 22 may be located in the same annular surface, so that a smooth connection is formed between the first mounting surface 12 and the second mounting surface 22, so that a coil mounting surface formed by matching the first mounting surface 12 and the second mounting surface 22 is matched with the coil 400, so as to ensure the insulation effect of the insulation wire frame 100.

In addition, any one of the inner wall surfaces of the first passage 11 and the corresponding one of the inner wall surfaces of the second passage 21 may be located on the same plane. That is, the inner wall surface of the first channel 11 and the inner wall surface of the second channel 21 may be in the same annular surface, so that smooth connection is formed between the inner wall surface of the first channel 11 and the inner wall surface of the second channel 21, thereby ensuring that the thickness of each place along the direction perpendicular to the first direction after connection between the first bracket 10 and the second is equal, and facilitating installation of the coil 400 and the two cores.

Alternatively, in the first direction, the length of the first channel 11 and the length of the second channel 21 may be equal, the length of the first core 200 and the length of the second core 300 may be the same, the first bracket 10 and the second bracket 20 may be substantially axisymmetric, and the first core 200 and the second core 300 may be substantially axisymmetric, so that the assembling difficulty between the two brackets and the corresponding cores may be substantially equivalent to simplify the assembling process between the two brackets and the two cores.

According to other embodiments of the present utility model, the first bracket 10 and the second bracket 20 are respectively integrally formed pieces of insulating material. Through setting up first support 10 and second support 20 by insulating material integrated into one piece, can make insulating wire frame 100 play insulating effect when separating two iron cores and coil 400, integrated into one piece still has easy manufacturing simultaneously, advantage that production efficiency is high.

The embodiment of the present utility model also provides a stator assembly 1, and the stator assembly 1 includes an insulation bobbin 100, a first core 200, a second core 300, and a coil 400. The first core 200 is disposed in the first channel 11, the second core 300 is disposed in the second channel 21, and the coil 400 is disposed on the first mounting surface 12 and the second mounting surface 22.

In other words, the stator assembly 1 of the present embodiment may be mainly composed of the insulation bobbin 100, the first core 200, the second core 300, and the coil 400. Wherein the insulating bobbin 100 is the insulating bobbin 100 according to any of the above embodiments, the first core 200 may be installed in the first channel 11 of the first bracket 10, the second core 300 may be installed in the second channel 21 of the second bracket 20, and the coil 400 may be disposed around the first mounting surface 12 and the second mounting surface 22.

Since the insulating wire frame 100 according to the embodiment of the present utility model has the above technical effects, the stator assembly 1 according to the embodiment of the present utility model also has the corresponding technical effects of completely spacing the iron core from the coil 400, avoiding the iron core from contacting the coil 400 during the assembly process, thereby avoiding the burrs on the iron core from scratching the coil 400, effectively protecting the coil 400, and the insulating wire frame 100 formed by the two brackets has a simple structure, is easy to manufacture and assemble, and is beneficial to improving the production efficiency.

According to some alternative embodiments of the present utility model, the first and second cores 200 and 300 are provided with stator teeth 201 at ends thereof, respectively, which are far from each other in the first direction, the first end of the first bracket 10, which is far from the second bracket 20, is provided with a first isolation part 13, the first end of the second bracket 20, which is far from the first bracket 10, is provided with a second isolation part 23, and the ends of the first and second isolation parts 13 and 23 are provided with sink grooves 14, respectively, which are adapted to mount the stator teeth 201.

Specifically, the ends of the first and second cores 200 and 300 may be provided with stator teeth 201, respectively, and when the first and second cores 200 and 300 are connected, the stator teeth 201 may be provided at one ends of the first and second cores 200 and 300 that are distant from each other in the first direction.

In some embodiments, the sink groove 14 is located inside the first and second isolation parts 13 and 23, and in the present utility model, the first and second brackets 10 and 20 are both cylindrical structures, and one side facing the central axes of the first and second brackets 10 and 20 is inside and one side facing away from the central axes of the first and second brackets 10 and 20 is outside.

The stator teeth 201 may be formed as bosses protruding outward along the outer circumferential surface of the first or second iron core 200 or 300, and it should be noted that the stator teeth 201 may surround the outer circumferential surface of the first or second iron core 200 or 300, or may be a plurality of bosses spaced apart from each other and disposed at the end of the first or second iron core 200 or 300, which is not limited thereto. For example, as shown in fig. 4, the stator teeth 201 on the first core 200 or the second core 300 may include two bosses, which may be provided on opposite sides of the first core 200 or the second core 300.

A sink groove 14 may be provided at the end portions of the first and second isolation portions 13 and 23, respectively, and the sink groove 14 may be formed by recessing one end surfaces of the first and second isolation portions 13 and 23 away from each other in a direction toward each other in the first direction.

In addition, the countersink 14 may be configured to fit the stator teeth 201, that is, the countersink 14 may be shaped and may be adapted to the shape of the stator teeth 201. At least a portion of the stator teeth 201 may be received within the sink 14.

In this embodiment, by providing the sink grooves 14 on the two isolation portions for mounting the stator teeth 201, the two brackets and the two iron cores can be positioned by the cooperation of the sink grooves 14 and the stator teeth 201, so that the mounting between the brackets and the iron cores is facilitated. Meanwhile, the sinking groove 14 accommodates the stator teeth 201, so that the stator teeth 201 can be separated from the coil 400, and burrs on the stator teeth 201 are prevented from damaging the coil 400.

Alternatively, in the first direction, the length of the first passage 11 may be greater than the length of the portion of the first core 200 other than the stator teeth 201, and the length of the second passage 21 may be greater than the length of the portion of the second core 300 other than the stator teeth 201, that is, when the two cores are assembled with the corresponding brackets, the ends to be connected of the two cores may be completely accommodated in the corresponding passages, and the ends to be connected of the two cores may be oriented toward one end of each other to avoid the cores from contacting the coil 400 during the insertion of the cores into the coil 400.

For example, the end surfaces of the ends to be connected of the two cores may be located in the corresponding channels and spaced apart from the end surface of the second end of the corresponding bracket by a preset distance, which may be equal to one half of the depth of the slot 15, and when the first bracket 10 is connected to the second bracket 20, the slot 15 and the plugging portion 25 may be mated, so that a portion of the first channel 11 at the second opening 112 overlaps a portion of the second channel 21 at the fourth opening 212, so that the two cores are stopped against each other.

According to other embodiments of the present utility model, a positioning portion and a mating portion are provided on one end surfaces of the first and second cores 200 and 300 facing each other, respectively, and the positioning portion mates with the mating portion to position the first and second cores 200 and 300.

Specifically, at least one of the first core 200 and the second core 300 may be provided with a groove 202, and at least the other one may be provided with a corresponding protrusion 203, and positioning connection between the two cores may be achieved through cooperation of the groove 202 and the protrusion 203.

Optionally, the end surface of the first iron core 200 facing the second iron core 300 may be provided with a groove 202 and a protrusion 203, and the end surface of the second iron core 300 facing the first iron core 200 may also be provided with a groove 202 and a protrusion 203, which are beneficial to referring to the stability and convenience of positioning connection between the first iron core 200 and the second iron core 300 through the cooperation of the two groups of grooves 202 and the protrusions 203.

According to some alternative embodiments of the present utility model, the coil 400 is spirally wound around an axial direction parallel to the first direction to form a mounting space 401 having openings at both ends, and the first and second brackets protrude into the mounting space 401 from the two openings, respectively.

As shown in fig. 6, the coil 400 may be spirally wound around an axis in a shape suitable for assembling the insulating bobbin 100, and the axis around which the coil 400 is wound may extend in the first direction. The coil 400 may be formed therein with an installation space 401 having openings at both ends.

When assembling the insulation bobbin 100, the core and the coil 400, winding of the coil 400 may be completed first, then the first core 200 is inserted into the first passage 11 of the first bracket 10, and the second core 300 is inserted into the second passage 21 of the second bracket 20, then the first bracket 10 is inserted into the coil 400 from the opening of one end of the installation space 401, the second bracket 20 is inserted into the coil 400 from the opening of the other end of the installation space 401, and the first and second brackets 10 and 20 are connected in the installation space 401, and connection of the first and second cores 200 and 300 is completed while connection of the first and second brackets 10 and 20 is completed.

In this embodiment, the coil 400 is wound in advance, and then the first bracket 200 and the second bracket 300 are inserted into the coil 400 to complete the assembly of the stator assembly 1, which is beneficial to simplifying the production process of the stator assembly 1, and meanwhile, it is ensured that the coil 400 is not scratched by the iron core during the assembly process of the stator assembly 1.

According to other embodiments of the present utility model, the coil 400 is wound with a flat wire, and the thickness direction of the flat wire is parallel to the first direction, which is advantageous for increasing the number of turns of the coil 400 in each stator assembly 1, alternatively, the coil 400 may be wound with a flat enameled wire using a concentrated winding.

The embodiment of the utility model also provides an electric machine 1000, which electric machine 1000 comprises a stator assembly 1 according to the above-described embodiment. In addition, the motor 1000 may further include a front end cover 2, a rear end cover 3, and two back irons 4, where the front end cover 2 and the rear end cover 3 may cooperate to define an accommodating space, and are configured to accommodate the plurality of stator assemblies 1 and the two back irons 4, and the plurality of stator assemblies 1 may be annularly distributed to form an annular structure, and two ends of the annular structure may be respectively provided with the corresponding back irons 4. One of the two back irons 4 may be attached to the first iron core 200, and the other may be attached to the second iron core 300.

Since the stator assembly 1 according to the embodiment of the present utility model has the above technical effects, the motor 1000 according to the embodiment of the present utility model also has the corresponding technical effects, that is, the iron core and the coil 400 can be completely spaced apart, and the iron core and the coil 400 are prevented from contacting in the assembly process, so that burrs on the iron core are prevented from scratching the coil 400, the coil 400 is effectively protected, and the insulating wire frame 100 formed by the two brackets has a simple structure, is easy to manufacture and assemble, and is beneficial to improving the production efficiency.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (16)

1. An insulated wire holder, comprising:

a first bracket provided with a first passage penetrating in a first direction, the first passage being configured to be adapted to mount a first core, an outer surface of the first bracket being formed as a first mounting surface;

a second bracket provided with a second passage penetrating in the first direction, the second passage being configured to be adapted to mount a second core, an outer surface of the second bracket being formed as a second mounting surface,

the first bracket is connected with the second bracket so that the first channel is communicated with the second channel, and the first mounting surface and the second mounting surface are suitable for mounting coils.

2. The insulated wire rack of claim 1, wherein a first end of the first bracket away from the second bracket is provided with a first spacer, a first end of the second bracket away from the first bracket is provided with a second spacer, and the first mounting surface and the second mounting surface are disposed between the first spacer and the second spacer.

3. The insulated wire holder of claim 2, wherein the number of the first and second spacers is two, respectively, the two first spacers being spaced apart and protruding outwardly in the second direction, the two second spacers being spaced apart and protruding outwardly in the second direction.

4. The insulated wire holder of claim 2, wherein the first spacer is formed as an annular boss protruding outwardly along an outer surface of the first bracket, and the second spacer is formed as an annular boss protruding outwardly along an outer surface of the second bracket.

5. The insulated wire holder of claim 4, wherein the first spacer is the same shape as the second spacer.

6. The insulated wire holder of claim 2, wherein the second end of the first bracket is detachably connected to the second end of the second bracket, and wherein an orthographic projection of the first bracket in a second direction, which is perpendicular to the first direction, overlaps with an orthographic projection of the second bracket in the second direction.

7. The insulated wire rack of claim 6, wherein the inner surface of the second end of the first bracket is provided with a slot, and the second end of the second bracket is provided with a plugging portion adapted to the slot, and the plugging portion is detachably plugged into the slot.

8. The insulated wire holder of claim 7, wherein a depth of the slot in the first direction is equal to a length of the mating portion in the first direction, and a thickness of the slot in a direction perpendicular to the first direction is equal to a thickness of the mating portion in the direction perpendicular to the first direction.

9. The insulated wire holder of claim 1, wherein any one of the first mounting surfaces is coplanar with a corresponding one of the second mounting surfaces.

10. The insulated wire rack of any one of claims 1-9, wherein the first and second brackets are each integrally formed pieces of insulating material.

11. A stator assembly, comprising:

the insulated wire rack of any one of claims 1-10;

the first iron core is arranged in the first channel;

the second iron core is arranged in the second channel;

and the coil is arranged on the first mounting surface and the second mounting surface.

12. The stator assembly of claim 11, wherein the first and second cores are provided with stator teeth at ends thereof that are far from each other in the first direction, the first end of the first bracket that is far from the second bracket is provided with a first isolation portion, the first end of the second bracket that is far from the first bracket is provided with a second isolation portion, and the ends of the first and second isolation portions are provided with sink grooves, respectively, that are suitable for mounting the stator teeth.

13. The stator assembly according to claim 11, wherein a positioning portion and a fitting portion are provided on one end face of the first core and the second core toward each other, respectively, the positioning portion being fitted with the fitting portion to position the first core and the second core.

14. The stator assembly according to claim 11, wherein the coil is spirally wound around an axial direction parallel to the first direction to form a mounting space having openings at both ends, the first and second brackets respectively protruding from both of the openings into the mounting space.

15. The stator assembly according to claim 11, wherein the coil is wound from a flat wire, a thickness direction of the flat wire being parallel to the first direction.

16. An electric machine comprising a stator assembly as claimed in any one of claims 11 to 15.