CN214314792U - Stator insulation frame, motor, electric power steering system and vehicle - Google Patents

Abstract

The utility model discloses a stator insulation frame, a motor, an electric power steering system and a vehicle, wherein, the stator insulation frame comprises a plurality of frame units which are annularly arranged, the frame unit is provided with an inner frame plate and an outer frame plate, a wire winding part is arranged between the inner frame plate and the outer frame plate, the side wall of a wire inlet groove close to a wire outlet groove is a first side wall, the side wall of the wire outlet groove close to the wire inlet groove is a second side wall, the center point of the connection part of the upper end surface of the wire winding part and the outer frame plate along the circumferential direction of the outer outline is a central point, the central point and the plane formed by the central axis of the stator insulation frame are central planes, the distance between the first side wall and the central plane is smaller than the distance between the second side wall and the central plane, which is beneficial to reducing the lengths of the wire inlet and the wire outlet, thereby the wire and the frame units are more compactly matched, which is beneficial to reliably positioning with a busbar in the subsequent process, the possibility of lead loosening is reduced, the reliability of the product is effectively improved, and the production efficiency is improved.

Description

Stator insulation frame, motor, electric power steering system and vehicle

Technical Field

The utility model belongs to the technical field of the relevant technique of motor and specifically relates to a stator insulation frame, motor, electric power steering system and vehicle are related to.

Background

The motor is as the important part of car, and the during operation needs stator core reliable and stable operation, and most motor stator core all adopt at present with stator insulation frame matched with structure, and wire winding and being connected lead-out wire and busbar on stator insulation frame, the last inlet wire of insulation frame and being qualified for the next round of competitions set up and can cause the pin connection not hard up when unreasonable, bring the risk and cause the defective percentage to rise for the motor reliability, efficiency decline.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a stator insulation frame, inlet wire groove and outlet groove design are more reasonable, are favorable to improving the product reliability.

The utility model discloses still provide motor, electric power steering system and vehicle including above-mentioned stator insulation frame.

According to the utility model discloses a stator insulation frame of first aspect embodiment, including a plurality of frame cell that are the annular arrangement, frame cell is equipped with outer deckle board and inner deckle board, be equipped with wire winding portion between outer deckle board and the inner deckle board, a plurality of outer deckle board encloses the outline that synthesizes stator insulation frame, a plurality of inner deckle board encloses the interior outline that synthesizes stator insulation frame, the upper end of outer deckle board is equipped with one of inlet wire groove and outlet wire groove, the lower tip of outer deckle board is equipped with the other one in inlet wire groove and the outlet wire groove; or the upper end part of the outer frame plate is provided with the wire inlet groove and the wire outlet groove;

the wire inlet groove and the wire outlet groove are arranged at intervals along the circumferential direction of the outer contour, the side wall of the wire inlet groove close to the wire outlet groove is a first side wall, the side wall of the wire outlet groove close to the wire inlet groove is a second side wall, the connection position of the upper end surface of the wire winding part and the outer frame plate is along the center of the circumferential direction of the outer contour as a center point, the center point and a plane formed by the central axis of the stator insulating frame are central planes, a first distance L1 is arranged between the first side wall and the central planes, a second distance L2 is arranged between the second side wall and the central planes, and the size of L1 and L2 meet the following requirements: l1 < L2.

According to the utility model discloses stator insulation frame has following beneficial effect at least:

the frame unit is provided with the winding part between the inner frame plate and the outer frame plate, the outer frame plate is provided with the wire inlet groove and the wire outlet groove, the winding wire is led into the winding part from the wire inlet groove and is led out from the wire outlet groove, the distance between the first side wall and the central plane is smaller than the distance between the second side wall and the central plane, namely, the wire inlet groove is closer to the upper end face of the winding part relative to the wire outlet groove in the circumferential direction of the outer contour of the outer frame plate, so that the incoming wire can be close to the upper end face of the winding part when the winding wire is led out from the wire inlet groove, and the length of the incoming wire is reduced; after the winding part finishes winding, the winding group has certain thickness, and the outgoing line is far away from the upper end face of the winding part when the winding is led out from the outgoing line groove, so that the thickness of the winding group can be matched, and the outgoing line length is reduced, therefore, the incoming line and the outgoing line are more compactly matched with the frame unit, reliable positioning with a busbar in subsequent processes is facilitated, the possibility of loosening of the lead is reduced, the product reliability is effectively improved, and the production efficiency is improved.

According to some embodiments of the invention, the ratio of L1 to L2 satisfies: L1/L2 is more than 0.5 and less than 1.

According to some embodiments of the present invention, the width of the wire winding portion along the circumference of the outer contour is L0, the size of L1 and L0 satisfies: l1 ═ L0/2.

According to some embodiments of the present invention, the wire inlet groove has a first depth H1 along the axial direction of the outer contour, the wire outlet groove has a second depth H2 along the axial direction of the outer contour, H1 and H2 satisfy: h1 > H2.

According to some embodiments of the invention, the ratio of H1 to H2 satisfies: 0.4 < H2/H1 < 0.8.

According to some embodiments of the utility model, wire diameter of the wire winding on the wire winding portion is d, the inlet wire groove is located when the upper end of outer deckle board, the up end of outer deckle board with distance between the up end of wire winding portion is third degree of depth H3, H1 with H3's size satisfies: H3-H1 < d is more than 0.5 d;

when the wire inlet groove is positioned at the lower end part of the outer frame plate, the distance between the lower end surface of the outer frame plate and the lower end surface of the wire winding part is a fourth depth H4, and the sizes of the H1 and the H4 meet the following requirements: 0.5d < H4-H1 < d.

According to the utility model discloses a some embodiments, the up end of wire winding portion and lower terminal surface are equipped with a plurality of wire winding grooves respectively, and are a plurality of the wire winding groove is in the footpath interval arrangement of outline.

According to some embodiments of the invention, the winding groove is curved along an axial cross section perpendicular to the outer contour.

According to some embodiments of the utility model, the upper end of planking is equipped with lock groove and the guide way that is used for with the busbar lock joint, the guide way position in lock groove top is followed the circumference of outline, the guide way with the lock groove is located the inlet wire groove with between the wire groove.

According to some embodiments of the present invention, the frame unit is provided with a slot for inserting a stator core, the slot penetrates through the outer frame plate, the wire winding portion and the inner frame plate along the radial direction of the outer contour, the frame unit includes a first insulating frame and a second insulating frame located below the first insulating frame, the lower end of the first insulating frame is provided with a first inserting groove, and the upper end of the second insulating frame is provided with a second inserting groove capable of being inserted and fixed with the first inserting groove;

the first inserting groove is arranged on one of the inner side surface and the outer side surface of the lower end edge of the first insulating frame, the second inserting groove is arranged on the other of the inner side surface and the outer side surface of the upper end edge of the second insulating frame, the inner side surface is a side surface close to the center of the clamping groove, the outer side surface is a side surface which deviates from the center of the clamping groove relative to the inner side surface, the axial height of the first inserting groove along the outer contour is E1, the axial height of the second inserting groove along the outer contour is E2, and E1 and E2 meet the requirements: e1 ≥ E2 ≥ 0.5 mm.

According to the utility model discloses a motor of second aspect embodiment, include:

a stator core;

the stator insulation frame according to the embodiment of the first aspect, wherein the stator insulation frame is connected to the stator core.

According to the utility model discloses motor has following beneficial effect at least:

the motor utilizes the stator insulation frame of embodiment to encircle stator core, and the wire winding is around on frame unit, and the inlet wire can be close to the up end of winding portion when the wire winding is introduced from the inlet wire groove, and the up end of winding portion is kept away from to the outlet wire when the wire winding is drawn forth from the outlet wire groove, makes the inlet wire and the cooperation of being qualified for the next round of competitions and frame unit compacter, is favorable to carrying out reliable location with the busbar in follow-up technology, reduces the possibility that the lead wire becomes flexible and appears, effectively improves the reliability of motor to promote production efficiency, be favorable to reducing motor manufacturing cost.

According to the third aspect of the present invention, the electric power steering system includes the motor of the second aspect of the present invention.

According to a fourth aspect embodiment of the present invention, a vehicle includes the electric power steering system of the third aspect embodiment.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a frame unit according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a first insulating frame according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of another view angle of the first insulating frame according to an embodiment of the present invention;

fig. 4 is a schematic front structural view of a first insulating frame according to an embodiment of the present invention;

fig. 5 is a schematic top view of a first insulating frame according to an embodiment of the present invention;

fig. 6 is a schematic side view of a first insulating frame according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a second insulating frame according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a stator assembly according to an embodiment of the present invention;

fig. 9 is an enlarged schematic view of a structure at a in fig. 8.

Reference numerals:

the stator insulation frame 1000, the frame unit 100, the first insulation frame 110, the wire inlet groove 111, the first side wall 1111, the wire outlet groove 112, the second side wall 1121, the first wire winding groove 113, the first insertion groove 114, the fastening groove 115, the guide groove 116, the second insulation frame 120, the second wire winding groove 121, the second insertion groove 122, the wire winding part 130, the wire winding position 131, the wire clamping groove 140, the outer frame plate 150, and the inner frame plate 160;

a stator core 200, an incoming line 210 and an outgoing line 220;

the bus bar 300, the wiring terminal 310 and the buckle 320.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, if there are first, second, etc. described, it is only for the purpose of distinguishing technical features, and it is not understood that relative importance is indicated or implied or that the number of indicated technical features is implicitly indicated or that the precedence of the indicated technical features is implicitly indicated.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated in relation to the orientation description, such as up, down, left, right, front, rear, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless there is an explicit limitation, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solutions.

A stator insulation frame 1000 according to an embodiment of the present invention is described with reference to fig. 1 to 9, and is applied to a stator core 200 of an electric machine. The stator insulating frame 1000 will be described below with specific examples.

Referring to fig. 1, an embodiment of the present invention provides a stator insulation frame 1000, including a plurality of frame units 100, a plurality of frame units 100 are annularly arranged along a circumference of a stator core 200 to form the stator insulation frame 1000, each frame unit 100 is provided with an outer frame plate 150 and an inner frame plate 160, a winding portion 130 is provided between the outer frame plate 150 and the inner frame plate 160, the winding portion 130 is provided with an outer side surrounding the frame unit 100, a winding wire (not shown in the drawing) is wound on the winding portion 130, thereby forming a winding group of the stator core 200, the frame unit 100 can provide a support for the winding group, and insulation between the stator core 200 and the winding group is ensured.

Referring to fig. 1, the frame unit 100 includes a first insulating frame 110 and a second insulating frame 120, wherein the first insulating frame 110 is located above the second insulating frame 120, a lower end of the first insulating frame 110 is connected to an upper end of the second insulating frame 120, and the frame unit 100 is in a split structure and is conveniently connected to the stator core 200 in a matching manner. Specifically, the inner sides of the first insulating frame 110 and the second insulating frame 120 are respectively provided with a slot 140 matching with the teeth of the stator core 200, and the outer sides of the first insulating frame 110 and the second insulating frame 120 are respectively provided with a winding position 131 forming a concave structure, so that the first insulating frame 110 and the second insulating frame 120 are generally saddle-shaped as a whole. The first insulating frame 110 and the slot 140 of the second insulating frame 120 can be fastened to the tooth position of the stator core 200, the winding position 131 surrounds the outside of the frame unit 100, and the winding can be wound in the winding position 131 to form a winding group, so that the structure is stable and reliable.

It should be noted that the outer frame plate 150 of the plurality of frame units 100 is defined to have an outer contour, the inner frame plate 160 of the plurality of frame units 100 is defined to have an inner contour, the outer contour and the inner contour are concentric circles, and the central axes of the outer contour and the inner contour are coincident with the central axis of the stator insulation frame 1000, the radial direction of the outer contour may be understood as the radial direction of the stator insulation frame 1000, the circumferential direction of the outer contour may be understood as the circumferential direction of the stator insulation frame 1000, and the axial direction of the outer contour may be understood as the axial direction of the stator insulation frame 1000.

Referring to fig. 1 and 2, a wire inlet groove 111 and a wire outlet groove 112 are formed in a side wall of an upper end of the first insulating frame 110, the wire inlet groove 111 and the wire outlet groove 112 extend downward from a top of the side wall along a height direction of the first insulating frame 110, and the wire inlet groove 111 and the wire outlet groove 112 are respectively communicated with a wire winding position 131, so that a winding wire can be led into the wire winding portion 130 from the wire inlet groove 111 and led out from the wire outlet groove 112, wherein a lead wire at the wire inlet groove 111 is a wire inlet 210, a lead wire at the wire outlet groove 112 is a wire outlet 220, and both the wire inlet 210 and the wire outlet 220 are connected with the busbar 300. It can be understood that the winding wire surrounds the winding end surface of the winding portion 130 layer by layer, and the winding group has a certain height after the winding is completed, and may also be understood as the thickness of the winding wire itself in a stacked manner, so that the position of the outgoing line 220 of the winding wire is different from the position of the incoming line 210 in the height direction. The winding end surface of the winding portion 130 includes an upper end surface of the first insulating frame 110 and a lower end surface of the second insulating frame 120.

Referring to fig. 2, 3 and 4, in particular, the wire inlet groove 111 and the wire outlet groove 112 are disposed at the upper end of the outer frame 150 of the first insulating frame 110, the wire inlet groove 111 is near the right side of the first insulating frame 110, and the wire outlet groove 112 is near the left side of the first insulating frame 110. As shown in fig. 4, the left side wall of the wire inlet groove 111 is a first side wall 1111, the right side wall of the wire outlet groove 112 is a second side wall 1121, the center of the connection between the upper end surface of the wire winding portion 130 and the outer frame plate 150 along the circumferential direction of the outer profile is a center point, a plane formed by the center point and the central axis of the stator insulation frame 1000 is defined as a center plane, the distance between the first side wall 1111 and the center plane is a first distance L1, the distance between the second side wall 1121 and the center plane is a second distance L2, and L1 and L2 satisfy: l1 < L2, i.e., the first distance L1 is less than the second distance L2. That is to say, in the circumferential direction of the outer contour, the wire inlet groove 111 is closer to the upper end face of the wire winding portion 130 than the wire outlet groove 112, so that the wire inlet groove 111 can be matched with the position of the wire inlet 210, and the wire outlet groove 112 can also be matched with the position of the wire outlet 220, which is beneficial to improving the stability of the wire inlet 210 and the wire outlet 220.

It should be noted that, one side of the upper end surface of the winding portion 130 is connected to the inner contour surface of the outer frame plate 150, the connection point extends along the circumferential direction of the outer contour, the central point can also be understood as the position of the winding portion 130 at the midpoint of the connection point along the circumferential width of the outer contour, and then a plane passing through the central point and the axis of the stator insulating frame 1000 is defined as the central plane, wherein the vertical plane where the line OA is located in fig. 4 is the central plane, and the intersection point of the line BC and the inner contour surface of the outer frame plate 150 in fig. 5 is the central point. The inlet groove 111 is closer to the central plane than the outlet groove 112.

Referring to fig. 2, 3 and 4, it can be understood that, in the axial direction of the outer contour, the axial distance between the upper end surface of the outer deckle plate 150 of the first insulating frame 110 and the bottom surface of the wire inlet groove 111 is a first depth H1, the axial distance between the upper end surface of the outer deckle plate 150 and the bottom surface of the wire outlet groove 112 is a second depth H2, and the sizes of H1 and H2 satisfy: h1 > H2, that is, the depth of the wire inlet groove 111 is greater than that of the wire outlet groove 112, so that the wire inlet groove 111 can match the position of the wire inlet 210 in the height direction, and the wire outlet groove 112 can match the position of the wire outlet 220 in the height direction, thereby facilitating the leading-in of the wire inlet 210 from the wire inlet groove 111 and the leading-out of the wire outlet 220 from the wire outlet groove 112.

It can be understood that, in the circumferential direction and the axial direction of the stator insulating frame 1000, the wire inlet groove 111 is closer to the upper end face of the wire winding portion 130 than the wire outlet groove 112, the wire is led into the wire winding position 131 from the wire inlet groove 111, and the wire inlet 210 can be close to the upper end face of the wire winding portion 130 when starting to wind, so as to reduce the distance between the wire inlet 210 and the upper end face of the wire winding portion 130 from the wire inlet groove 111, and the wire inlet 210 can reach the upper end face of the wire winding portion 130 without extending a distance after passing through the wire inlet groove 111, which is beneficial to shortening the length of the wire inlet 210; after the winding group finishes winding, the outgoing line 220 is located at the outermost layer of the winding group, that is, the outgoing line 220 is far away from the upper end face of the winding part 130 relative to the incoming line 210, so that the outgoing line slot 112 can be close to the position of the outgoing line 220, the distance from the outgoing line 220 led out from the winding group to the outgoing line slot 112 is reduced, and the purpose of shortening the length of the outgoing line 220 is achieved. It can be understood that the incoming line 210 can be tightly attached to the incoming line groove 111, and the outgoing line 220 can be tightly attached to the outgoing line groove 112, so that the incoming line 210 and the outgoing line 220 are respectively in tight fit with the first insulating frame 110, a space where the lead is easy to loosen is reduced, the incoming line 210 and the outgoing line 220 are directly connected with the busbar 300 after being led out, accurate and reliable positioning with the busbar 300 is facilitated, the connection structure is stable and reliable, the possibility of loosening of the incoming line 210 or the outgoing line 220 is reduced, the defective rate is effectively reduced, the product reliability is improved, the production efficiency is also improved, and reduction of the production cost is facilitated.

The first insulating frame 110 and the second insulating frame 120 are connected to the stator core 200 such that the first insulating frame 110 and the second insulating frame 120 are respectively located at both sides of the tooth portion of the stator core 200. After the winding of the winding group is completed, the first insulating frame 110 is connected with the busbar 300 in a buckling mode, so that the busbar 300 is fixed on the stator core 200, then the incoming line 210 and the outgoing line 220 of the winding group are respectively welded with the wiring terminal 310 of the busbar 300, and under the condition that the incoming line 210 and the outgoing line 220 are reliably positioned, the fast welding fixation is facilitated, and the efficiency is higher.

Referring to fig. 4, the wire inlet groove 111 and the wire outlet groove 112 are both U-shaped grooves with upward openings, the wire inlet groove 111 and the wire outlet groove 112 are respectively located at two sides of the central plane, and a first distance L1 between the left side wall of the wire inlet groove 111 and the central plane and a second distance L2 between the right side wall of the wire outlet groove 112 and the central plane can be set according to the application requirements of the actual product. In an embodiment, the ratio of the first distance L1 to the second distance L2 satisfies: 0.5 < L1/L2 < 1, it can be understood that the arrangement can ensure that the line inlet groove 111 is closer to the upper end face of the line winding part 130 relative to the line outlet groove 112 in the horizontal direction, and the position distribution of the line inlet groove 111 and the line outlet groove 112 along the circumferential direction of the outer contour is more reasonable.

Referring to fig. 5, the width of the winding portion 130 in the circumferential direction of the outer profile is L0, and L1 and L0 satisfy: l1 is L0/2, i.e., the distance between the left side wall and the center plane of the wire-feeding groove 111 is equal to half the circumferential width of the upper end surface of the wire winding portion 130. The incoming line 210 is led into the winding part 130 through the line inlet groove 111 and then is close to the upper end face of the winding part 130, so that the distance from the line inlet groove 111 to the upper end face of the winding part 130 of the incoming line 210 is effectively reduced, and unnecessary lead length is avoided.

It is understood that, in the case where 0.5 < L1/L2 < 1 and L1 is L0/2 are satisfied, the wire inlet groove 111 is close to the upper end face of the wire winding portion 130 and the wire outlet groove 112 is far from the upper end face of the wire winding portion 130. When the winding starts to be wound, the incoming line 210 is close to the upper end face of the winding part 130, the outgoing line 220 is close to the outgoing line groove 112 after the winding group is completed, the lengths of the incoming line 210 and the outgoing line 220 are effectively shortened, so that the incoming line 210 and the outgoing line 220 are tightly matched with the first insulating frame 110, the space where the outgoing line is easy to loosen is reduced, accurate and reliable positioning with the busbar 300 is facilitated, the possibility that the incoming line 210 or the outgoing line 220 is loosened is reduced, and the reliability of a product is improved.

It should be noted that specific size parameters of the first distance L1, the second distance L2 and the circumferential width L0 of the upper end surface of the winding portion 190 may be set according to practical application requirements of different motors, for example, L1 is 3mm, L2 may be 5mm, and L0 may be 6mm, which is not further limited herein.

Referring to fig. 4, in the embodiment, the ratio of the first depth H1 to the second depth H2 satisfies: 0.4 < H2/H1 < 0.8, it can be understood that the bottom surface of the wire inlet groove 111 is closer to the upper end surface of the wire winding part 130, the wire inlet 210 is led into the upper end surface of the wire winding part 130, the wire winding is started from the bottom layer, the wire outlet 220 is positioned at the outermost layer of the wire winding group after the wire winding is completed, namely, the position of the wire outlet 220 is at the highest position of the wire winding group, thus, in the height direction, the wire inlet groove 111 is closer to the upper end surface of the wire winding part 130 relative to the wire outlet groove 112, and the position distribution of the wire inlet groove 111 and the wire outlet groove 112 in the height direction is more reasonable.

Referring to fig. 5 and 7, it should be noted that first winding grooves 113 are formed in the upper end surface of the winding portion 130, and second winding grooves 121 are formed in the lower end surface of the winding portion 130, wherein the first winding grooves 113 are spaced apart in the radial direction of the outer contour, and the second winding grooves 121 are spaced apart in the radial direction of the outer contour. The first winding groove 113 and the second winding groove 121 are used for positioning the winding wires, so that the winding wires are positioned, and the winding wires are prevented from being offset to cause winding wire staggering.

Referring to fig. 4 and 6, in the embodiment, the axial distance between the upper end of the outer frame plate 150 of the first insulating frame 110 and the upper end surface of the winding part 130 is H3, the wire diameter of the winding is d, and the difference between H3 and H1 satisfies: 0.5d is more than H3-H1 and less than d, H3-H1 can be understood as the distance between the bottom surface of the wire inlet groove 111 and the upper end surface of the wire winding part 130, the distance is less than the wire diameter of the wire winding and more than half of the wire diameter of the wire winding, so that the wire inlet 210 can be directly attached to the first wire winding groove 113 after being introduced from the wire inlet groove 111, the wire winding operation can be started, the wire inlet 210 can be introduced into the first wire winding groove 113 without bending the wire inlet 210 and other operations, the position of the wire inlet 210 of the wire winding group is favorably kept in a straight state, the wire inlet 210 is tightly attached to the wire inlet groove 111, the structure is more compact, the positioning effect is better, the possibility of loosening of the wire inlet 210 is further reduced, and the reliability of the product is improved.

It should be noted that, referring to fig. 6, the distance between the upper end of the outer frame plate 150 of the first insulating frame 110 and the upper end surface of the slot 140 is H0, the upper end surface of the slot 140 is attached to the stator core 200 during assembly, and H0, H1, H2, and H3 satisfy: h2 < H1 < H3 < H0, it can be understood that the incoming line 210 is closer to the stator core 200 than the outgoing line 220, the electrical safety performance requirement is met, and the structure is more reasonable. In the embodiment, the specific size parameters of the first depth H1, the second depth H2, the third depth H3, the distance H0 between the upper end of the outer frame plate 150 of the first insulating frame 110 and the upper end surface of the slot 140, and the wire diameter d may be set according to the practical application requirements of different motors, and are not described in detail again.

Referring to fig. 2 and 7, the first winding groove 113 and the second winding groove 121 have arc-shaped cross sections along the radial direction of the outer contour, so that the first winding groove 113 and the second winding groove 121 can be better matched with the winding, and the arc-shaped diameters of the first winding groove 113 and the second winding groove 121 can be matched with the diameter of the winding, for example, the arc-shaped diameter of the first winding groove 113 is greater than or equal to the diameter of the winding, so that the winding is reliably positioned, and a better winding effect is ensured.

Referring to fig. 1, 6 and 7, a first insertion groove 114 is formed at the lower end of the first insulating frame 110, a second insertion groove 122 is formed at the upper end of the second insulating frame 120, and the first insertion groove 114 and the second insertion groove 122 are matched to be connected, so that the first insulating frame 110 and the second insulating frame 120 are connected into a whole, the structure is simple and practical, and the installation is convenient and fast. The first inserting groove 114 is arranged at the lower end edge of the inner side surface of the first insulating frame 110 facing the card slot 140, the second inserting groove 122 is arranged at the lower end edge of the outer side surface of the second insulating frame 120 facing away from the card slot 140, the axial height of the first inserting groove 114 along the outer contour is E1, the axial height of the second inserting groove 122 along the outer contour is E2, and E1 and E2 satisfy the following requirements: e1 is more than 0.5mm E2, so that the connection between the first insertion groove 114 and the second insertion groove 122 is more stable and reliable.

In the embodiment, the first insulating frame 110 and the second insulating frame 120 are both plastic members, the wire inlet groove 111, the wire outlet groove 112, the first inserting groove 114 and the first insulating frame 110 are integrally formed, and the second inserting groove 122 and the second insulating frame 120 are integrally formed, so that the structure is stable and reliable.

Referring to fig. 2, it can be understood that the first insulating frame 110 is correspondingly inserted into a tooth position of the stator core 200, and the second insulating frame 120 is correspondingly inserted into a corresponding tooth position, and the first inserting slot 114 and the second inserting slot 122 are connected, so that the stator core 200 is tightly attached to the side wall of the slot 140 of the stator insulating frame 1000, the winding group can be tightly wound on the tooth of the stator core 200, and insulation between the stator core 200 and the winding group can be ensured. The corners of the stator insulating frame 1000 provided on the side walls of the slot 140 are not chamfered. Specifically, the vertex angle position of the side wall of the clamping groove 140 is set to be the corner of the right angle shape, the corner of the right angle shape can be more favorable for being matched with the stator core 200, the tooth parts of the frame unit 100 and the stator core 200 can be more tightly attached, and the stability of the overall structure of the stator insulation frame 1000 and the stator core 200 is effectively improved.

Referring to fig. 5 and 8, it should be noted that the stator core 200 is ring-shaped, and the stator insulation frame 1000 is annularly distributed at the tooth position of the stator core 200, so that the stator insulation frame 1000 can surround the stator core 200. It can be understood that the first insulating frame 110 and the second insulating frame 120 have an outer circular-arc-shaped contour and an inner circular-arc-shaped contour, that is, the outer frame plate 150 and the inner frame plate 160 on the first insulating frame 110 and the second insulating frame 120 along the radial direction of the stator core 200 are both circular-arc-shaped, and the circular arcs of the outer contour and the inner contour are both coaxial with the stator core 200, so that the matching performance of the stator insulating frame 1000 and the stator core 200 is better.

Referring to fig. 2, 8 and 9, the outer contour surface of the outer bezel 150 and the inner contour surface of the inner bezel 160 are concentric circular arc surfaces, the outer contour surface of the outer bezel 150 of the first insulating frame 110 is provided with a fastening groove 115 and a guide groove 116, the fastening groove 115 is used for fastening the bus bar 300, the bottom of the bus bar 300 is provided with a fastener 320, the guide groove 116 is arranged right above the fastening groove 115, and the guide groove 116 and the fastening groove 115 are arranged between the wire inlet groove 111 and the wire outlet groove 112. After the winding of the winding group is completed, the buckle 320 of the bus bar 300 is guided by the guide groove 116, so that the buckle 320 can be accurately positioned and buckled in the buckling groove 115, the quick buckling of the buckle 320 and the buckling groove 115 is realized, then the incoming wire 210 and the outgoing wire 220 of the winding group are respectively welded with the wiring terminal 310 on the bus bar 300, under the condition that the incoming wire 210 and the outgoing wire 220 are reliably positioned, the quick welding and fixing are facilitated, the assembly efficiency of the bus bar 300 and the stator insulation frame 1000 is improved, and the integral manufacturing cost of the motor is reduced.

It should be noted that in some embodiments, the wire inlet groove 111 and the wire outlet groove 112 may be separately provided at the upper end and the lower end of the frame unit 100. Specifically, the wire inlet groove 111 is disposed at the upper end of the outer frame 150 of the first insulating frame 110, the wire outlet groove 112 is disposed at the lower end of the outer frame 150 of the second insulating frame 120, that is, the wire inlet 210 is led in from the upper end of the first insulating frame 110, and the wire outlet 220 is led out from the lower end of the second insulating frame 120. Of course, the positions of the wire inlet groove 111 and the wire outlet groove 112 may be interchanged, so that the positions of the wire inlet 210 and the wire outlet 220 are interchanged, which is specifically set according to the actual application requirements of the motor, and will not be described herein again. Further, when the wire inlet groove 111 is located at the upper end portion of the outer frame 150 of the first insulation frame 110, the axial distance between the upper end surface of the outer frame 150 and the upper end surface of the wire winding portion 130 is a third depth H3; when the wire inlet groove 111 is located at the lower end of the outer frame plate 150 of the second insulating frame 120, the axial distance between the lower end surface of the outer frame plate 150 and the lower end surface of the wire winding portion 130 is the fourth depth H4, and the size relationship between H4 and H1 satisfies 0.5d < H4-H1 < d, which can be specifically referred to the proportional relationship between H3 and H1 shown in fig. 4 and 6.

Referring to fig. 8, the embodiment of the present invention further provides a motor, which includes a stator core 200 and a stator insulating frame 1000 shown in the above embodiment, the stator insulating frame 1000 is connected to the stator core 200, and components such as a housing and a rotor of the motor are not shown in the drawings. It is understood that a plurality of frame units 100 are annularly arranged on the stator core 200, and then winding groups each having an incoming line 210 and an outgoing line 220 are wound on the frame units 100; after the winding groups are completed, the bus bar 300 is fastened with the first insulating frame 110, so that the bus bar 300 is fixed on the stator core 200, and then the incoming line 210 and the outgoing line 220 on each first insulating frame 110 are respectively connected to the wiring terminals 310 of the bus bar 300.

Referring to fig. 8 and 9, it can be understood that the arrangement of the wire inlet groove 111 and the wire outlet groove 112 of the stator insulation frame 1000 is more reasonable, the wire inlet 210 can be tightly attached to the wire inlet groove 111 in the winding process, and the wire outlet 220 can be tightly attached to the wire outlet groove 112, so that the wire inlet 210 and the wire outlet 220 are respectively and compactly matched with the first insulation frame 110, a space where the wires are easy to loose is reduced, the wire inlet 210 and the wire outlet 220 are directly connected with the busbar 300 after being led out, accurate and reliable positioning with the busbar 300 is facilitated, welding is more efficient, the possibility that the wire inlet 210 or the wire outlet 220 is loose is reduced, the defective rate is effectively reduced, the reliability of the motor is improved, production efficiency is also improved, and production cost is reduced.

The embodiment of the utility model provides an Electric Power Steering system (not shown in the figure) that still provides, this Electric Power Steering system (Electric Power Steering, EPS) are the Power Steering system who directly relies on the motor to provide auxiliary torque, and the EPS mainly comprises torque sensor, speed sensor, motor, reduction gears and electronic control unit etc. and wherein the motor is the motor of above-mentioned embodiment. Since the electric power steering system adopts all technical solutions of the motor of the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The embodiment of the utility model provides a vehicle (not shown in the figure) that still provides, including the electric power steering system of above-mentioned embodiment, because the vehicle has adopted the whole technical scheme of the electric power steering system of above-mentioned embodiment, consequently have all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer describe here.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (13)

1. A stator insulation frame comprises a plurality of frame units which are arranged in a ring shape,

the frame unit is provided with an outer frame plate and an inner frame plate, a wire winding part is arranged between the outer frame plate and the inner frame plate, the outer frame plates surround and form the outer contour of the stator insulation frame, the inner frame plates surround and form the inner contour of the stator insulation frame, one of a wire inlet groove and a wire outlet groove is arranged at the upper end part of the outer frame plate, and the other of the wire inlet groove and the wire outlet groove is arranged at the lower end part of the outer frame plate; or the upper end part of the outer frame plate is provided with the wire inlet groove and the wire outlet groove;

the wire inlet groove and the wire outlet groove are arranged at intervals along the circumferential direction of the outer contour, the side wall of the wire inlet groove close to the wire outlet groove is a first side wall, the side wall of the wire outlet groove close to the wire inlet groove is a second side wall, the connection position of the upper end surface of the wire winding part and the outer frame plate is along the center of the circumferential direction of the outer contour as a center point, the center point and a plane formed by the central axis of the stator insulating frame are central planes, a first distance L1 is arranged between the first side wall and the central planes, a second distance L2 is arranged between the second side wall and the central planes, and the size of L1 and L2 meet the following requirements: l1 < L2.

2. The stator insulation frame of claim 1, wherein the ratio of L1 to L2 satisfies: L1/L2 is more than 0.5 and less than 1.

3. The stator insulation frame of claim 1, wherein the width of the winding portion in the circumferential direction of the outer contour is L0, and the L1 and the L0 are sized to satisfy: l1 ═ L0/2.

4. The stator insulation frame of claim 1 wherein the wire inlet slots have a first depth H1 in the axial direction of the outer profile, the wire outlet slots have a second depth H2 in the axial direction of the outer profile, the H1 and the H2 are sized to: h1 > H2.

5. The stator insulation frame of claim 4, wherein the ratio of H1 to H2 satisfies: 0.4 < H2/H1 < 0.8.

6. The stator insulation frame of claim 4, wherein the wire diameter of the winding wire on the winding portion is d, the distance between the upper end surface of the outer frame plate and the upper end surface of the winding portion when the wire inlet groove is located at the upper end portion of the outer frame plate is a third depth H3, and the sizes of H1 and H3 are satisfied: H3-H1 < d is more than 0.5 d;

when the wire inlet groove is positioned at the lower end part of the outer frame plate, the distance between the lower end surface of the outer frame plate and the lower end surface of the wire winding part is a fourth depth H4, and the sizes of the H1 and the H4 meet the following requirements: 0.5d < H4-H1 < d.

7. The stator insulation frame according to claim 1, wherein a plurality of winding grooves are formed in the upper end surface and the lower end surface of the winding portion, respectively, and are spaced apart in a radial direction of the outer profile.

8. The stator insulation frame of claim 7, wherein the winding slots are arcuate in cross-section in an axial direction perpendicular to the outer profile.

9. The stator insulation frame according to any one of claims 1 to 8, wherein the upper end of the outer frame plate is provided with a fastening groove and a guiding groove for fastening with a busbar, the guiding groove is located above the fastening groove, and the guiding groove and the fastening groove are located between the wire inlet groove and the wire outlet groove along the circumferential direction of the outer contour.

10. The stator insulation frame according to any one of claims 1 to 8, wherein the frame unit is provided with a slot for inserting a stator core, the slot penetrates through the outer frame plate, the winding portion and the inner frame plate along a radial direction of the outer contour, the frame unit comprises a first insulation frame and a second insulation frame located below the first insulation frame, a first insertion groove is formed in a lower end of the first insulation frame, and a second insertion groove capable of being inserted and fixed with the first insertion groove is formed in an upper end of the second insulation frame;

the first inserting groove is arranged on one of the inner side surface and the outer side surface of the lower end edge of the first insulating frame, the second inserting groove is arranged on the other of the inner side surface and the outer side surface of the upper end edge of the second insulating frame, the inner side surface is a side surface close to the center of the clamping groove, the outer side surface is a side surface which deviates from the center of the clamping groove relative to the inner side surface, the axial height of the first inserting groove along the outer contour is E1, the axial height of the second inserting groove along the outer contour is E2, and E1 and E2 meet the requirements: e1 ≥ E2 ≥ 0.5 mm.

11. An electric machine, comprising:

a stator core;

the stator insulation frame according to any one of claims 1 to 10, which is connected with the stator core.

12. An electric power steering system, characterized by comprising the motor of claim 11.

13. A vehicle characterized by comprising an electric power steering system according to claim 12.

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