Stator framework, motor stator, rotating motor and carrying vehicle

Abstract

The utility model provides a stator frame, a motor stator, a rotating motor and a carrier, the outer surface of the stator frame is provided with a winding groove extending around the circumference of the stator frame, the side wall of at least one side of the winding groove is provided with an inclined transition part, the inclined transition part is provided with a guide surface, and the guide surface is arranged towards the bottom wall of the winding groove and the opposite side wall. And the side wall of the corresponding side of the winding groove is connected between the guide surface and the bottom wall of the winding groove. Compared with a flat bottom type winding groove, the winding groove of the stator framework provided by the utility model has more winding space, and compared with an arc bottom type winding groove, the fall between the outer end of the winding groove and the opening at the inclined transition part is smaller, so that an inductance coil is easier to approach to the corner of the winding groove during winding; and the straight side wall between the guide surface and the bottom wall of the winding groove can support the inductance coil to prevent the edge winding from collapsing, so that the fullness rate of the winding groove is improved, and the service life and the mechanical efficiency of the rotating motor are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of robot, specifically, relate to a kind of stator framework, a kind of motor stator comprising the stator framework, a kind of rotating electrical machine comprising the motor stator and a kind of carrier comprising the rotating electrical machine. BACKGROUND

[0002] Rotating electrical machine is widely used in automobile, industrial automation, robot and other fields, rotating electrical machine is generally composed of motor stator, rotor assembly, shell and related accessories, rotating electrical machine is driven to rotate in shell by the magnetic field interaction of motor stator and rotor assembly.

[0003] The structure of rotating electrical machine in different application scenarios is different, wherein the rotor assembly of permanent magnet synchronous motor is fixed magnetic field, and the rotor assembly arranged inside is driven to rotate by the alternating magnetic field generated by motor stator. Specifically, the rotor assembly includes rotor core, permanent magnet and rotating shaft, the motor stator includes stator framework, stator core and inductance coil, the stator core is arranged in the stator framework, and the inductance coil is wound on the stator framework to strengthen the magnetic field generated by inductance coil through the stator core. SUMMARY

[0004] The utility model aims at solving one of the technical problems in the related art to some extent. To this end, the utility model provides a kind of stator framework, a kind of motor stator comprising the stator framework, a kind of rotating electrical machine comprising the motor stator and a kind of carrier comprising the rotating electrical machine, the stator framework can guarantee winding groove space, and can improve winding stability.

[0005] To achieve the above-mentioned purpose, as one aspect of the utility model, a kind of stator framework is provided, the outer surface of the stator framework is formed with winding groove extending circumferentially around the stator framework, the side wall of at least one side of the winding groove has inclined transition part, and the inclined transition part has guide surface, the guide surface is arranged towards the bottom wall and the opposite side wall of the winding groove, and the side wall corresponding to the side of the winding groove is connected between the guide surface and the bottom wall of the winding groove.

[0006] Optionally, the stator framework extends along the preset axis direction, the stator framework is formed with core mounting hole penetrating along the preset radial direction, and the winding groove extends circumferentially around the core mounting hole.

[0007] Optionally, the stator skeleton comprises an outer end portion, a winding portion and an inner end portion connected in sequence along the preset radial direction, the outer end portion, the winding portion and the inner end portion all extend along a preset axial direction, the preset axial direction intersects the preset radial direction, the winding slot is formed between the outer end portion and the inner end portion, and the core mounting hole penetrates the outer end portion, the winding portion and the inner end portion along the preset radial direction.

[0008] Optionally, the outer end portion and the inner end portion both extend along an arc surface, the axial lines of the arc surfaces of the outer end portion and the inner end portion both extend along the preset axial direction and are located on the side of the inner end portion away from the outer end portion.

[0009] Optionally, an outer core groove is formed on the surface of the side of the outer end portion away from the inner end portion.

[0010] Optionally, an inner core groove is formed on the surface of the side of the inner end portion away from the outer end portion.

[0011] Optionally, at least one end of the outer end portion along the preset axial direction has a positioning protrusion, the positioning protrusion is used for being inserted into a positioning hole on a driving circuit board in the rotary motor.

[0012] Optionally, the outer end portion further has a mounting hole extending along the preset axial direction on the end surface.

[0013] Optionally, the winding slot has a winding guide groove formed on the side wall on at least one side along the preset axial direction, and the winding guide groove is connected with the end surface of the outer end portion along the preset axial direction.

[0014] Optionally, the stator skeleton comprises a plurality of skeleton sub-bodies, and the plurality of skeleton sub-bodies are spliced to form the stator skeleton and the core mounting hole along the preset axial direction.

[0015] Optionally, the stator skeleton comprises a pair of skeleton sub-bodies, and the two skeleton sub-bodies are identical in shape. For example, the outer end portion is symmetrically provided with the positioning protrusions at both ends along the preset axial direction, the winding slot has the winding guide groove formed on the side wall on both sides along the preset axial direction, and the outer end portion has the mounting hole formed on the end surface at both ends along the preset axial direction.

[0016] Optionally, the oblique transition portion extends along the length direction of the corresponding side of the winding slot, and the end portion of the oblique transition portion has a chamfered bevel, and the chamfered bevel is connected between the guide surface and the side wall of the winding slot.

[0017] Optionally, both ends of the oblique transition portion have the chamfered bevel.

[0018] Optionally, the oblique transition portion has an outer connecting surface on the side away from the bottom wall of the wire slot, and the outer connecting surface is connected with the guide surface and the outer end portion on two sides along the preset radial direction respectively.

[0019] Optionally, the oblique transition portion has a preset interval distance with the bottom wall of the wire slot.

[0020] Optionally, the side wall of the wire slot between the bottom wall and the oblique transition portion is perpendicular to the bottom wall.

[0021] Optionally, the oblique transition portions are arranged in pairs on the opposite sides of the stator framework.

[0022] Optionally, the oblique transition portions are arranged in pairs on two sides along a preset circumferential direction of the core mounting hole, and the preset circumferential direction intersects with the preset axial direction and the preset radial direction.

[0023] Optionally, the preset circumferential direction is perpendicular to the preset axial direction and the preset radial direction.

[0024] Optionally, the depth of at least one side of the wire slot gradually increases towards the side of the oblique transition portion.

[0025] Optionally, the depths of both sides of the wire slot along the preset axial direction gradually increase towards the side of the oblique transition portion.

[0026] Optionally, the side wall of the wire slot opposite to the oblique transition portion includes a limiting inclined surface and a limiting flat surface, the limiting inclined surface is connected between the limiting flat surface and the bottom wall of the wire slot, the distance between the limiting inclined surface and the opposite side wall gradually increases away from the bottom wall, and the limiting flat surface is arranged towards the opposite side wall.

[0027] Optionally, the limiting flat surface is parallel to the side wall of the wire slot between the bottom wall and the oblique transition portion.

[0028] As a second aspect of the present application, a motor stator is provided, which comprises a stator core and a stator framework provided by the embodiments of the present application, and the stator core is fixedly connected with the stator framework.

[0029] Optionally, a through core mounting hole is formed in the stator framework, and the stator core is accommodated in the core mounting hole.

[0030] Optionally, the stator core comprises an outer magnetic conducting portion, a connecting portion and an inner magnetic conducting portion connected in sequence, and the connecting portion is accommodated in the core mounting hole.

[0031] Optionally, an outer core groove is formed on the surface of the outer end portion, and the outer magnetic conducting portion accommodates an outer core disposed in the outer core groove.

[0032] Optionally, an inner core groove is formed on the surface of the inner end portion, and the inner magnetic conducting portion accommodates an inner core disposed in the inner core groove.

[0033] Optionally, the motor stator further comprises an inductor coil, and the inductor coil is wound in the winding groove of the motor stator.

[0034] As a third aspect of the present application, a rotary motor is provided, which comprises a housing, a rotor assembly and a plurality of motor stators provided by the embodiments of the present application, the rotor assembly is movably arranged in the housing, and the plurality of motor stators are arranged around the periphery of the rotor assembly and are fixedly connected with the housing, and an inductor coil is wound in the winding groove of the motor stator.

[0035] Optionally, the rotary motor further comprises a driving circuit board, the driving circuit board is arranged in the housing, the driving circuit board has a plurality of positioning holes, at least one end of the outer end portion along the preset axis direction has a positioning protrusion, and the positioning protrusion is accommodated in the positioning hole.

[0036] As a fourth aspect of the present application, a trolley is provided, which comprises a vehicle body, at least one rotary motor and a plurality of traveling wheels, the traveling wheels are arranged on the vehicle body, the rotary motor can drive the traveling wheels to rotate to drive the vehicle body to move, and the rotary motor is the rotary motor provided by the embodiments of the present application.

[0037] In the stator framework, the motor stator, the rotary motor and the trolley provided by the present application, the side wall of the winding groove has an oblique transition portion, and the guide surface of the oblique transition portion is inclined towards the winding groove, so as to expand the accommodation space of the winding groove, so that the winding groove can accommodate more turns of the coil while ensuring the stability of the inductor coil.

[0038] Specifically, in addition to the guide surface, the side wall of the winding groove outside the inductor coil has a straight section, the winding groove has more winding space compared with the existing flat bottom type winding groove; and compared with the existing arc bottom type winding groove, the difference between the opening of the outer end of the winding groove and the oblique transition portion in the present application is smaller, so that the problem of difficult to walk straight due to the difference between the oblique transition portion and the side wall of the winding groove is not easy to occur, and the inductor coil is more easily close to the corner of the winding groove during winding, so as to ensure the winding groove fullness.

[0039] In addition, the straight side wall between the guide surface and the bottom wall of the winding groove can support the inductor coil, prevent the edge winding from collapsing, and further improve the winding groove fullness, so as to ensure the service life and mechanical efficiency of the rotary motor. BRIEF DESCRIPTION OF DRAWINGS

[0040] The utility model will be further explained in connection with the drawings:

[0041] Figure 1 It is the structural schematic diagram of flat bottom type stator framework;

[0042] Figure 2 It is the structural schematic diagram of arc bottom type stator framework;

[0043] Figure 3 It is the structural schematic diagram of stator framework provided by the utility model embodiment;

[0044] Figure 4 It is the structural schematic diagram of stator framework provided by the utility model embodiment along the preset axial direction view angle;

[0045] Figure 5 It is the sectional structure schematic diagram of stator framework provided by the utility model embodiment;

[0046] Figure 6 It is the structural schematic diagram of single framework split body in stator framework provided by the utility model embodiment;

[0047] Figure 7 It is Figure 6 The local enlarged schematic diagram of structure in A area in it.

[0048] Figure 8 It is the structural schematic diagram of motor stator provided by the utility model embodiment;

[0049] Figure 9 It is the structural schematic diagram of motor stator provided by the utility model embodiment;

[0050] Figure 10 It is the structural schematic diagram of motor stator along the preset axial direction view angle provided by the utility model embodiment;

[0051] Figure 11 It is the structural schematic diagram of motor stator along the preset circumferential view angle provided by the utility model embodiment;

[0052] Figure 12 It is the winding distribution situation schematic diagram of inductance coil in motor stator provided by the utility model embodiment.

[0053] Mark explanation:

[0054] 100, outer end; 101, oblique transition; a0, side wall; a1, guide surface; a2, chamfered slope; a3, outer connecting surface; 110, outer core slot; 120, positioning protrusion; 130, mounting hole; 140, wire winding guide slot; 200, wire winding portion; 300, inner end; 310, inner core slot; 400, core mounting hole; 500, wire winding slot; b1, limiting slope; b2, limiting plane; 10, stator core; 11, outer magnetic conducting portion; 12, inner magnetic conducting portion; 20, inductance coil. DETAILED DESCRIPTION

[0055] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numbers represent the same or similar elements or elements having the same or similar functions throughout. Based on the embodiments in the embodiments, it is intended to explain the present application, and cannot be understood as a limitation of the present application.

[0056] In this specification, "one embodiment" or "an embodiment" or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. The appearance of the phrase "in one embodiment" at various locations in the specification is not necessarily all referring to the same embodiment.

[0057] In a rotating electrical machine, a plurality of motor stators are arranged around the axis of the rotor assembly, and the wire winding slot for accommodating the inductance coil on the stator skeleton mainly includes flat bottom type and arc bottom type. The flat bottom type wire winding slot is shown in Figure 1 , and the arc bottom type wire winding slot is shown in Figure 2 . The side wall m1 of the flat bottom type wire winding slot close to the outer side is perpendicular to the bottom wall, which structure has no any obstruction to the wire winding path, is convenient for the wire to run straight, and can ensure that the inductance coil is stably and smoothly laid on the groove bottom of the wire winding slot. However, the accommodation space of the flat bottom type wire winding slot is inferior to that of the arc bottom type wire winding slot. The side wall m2 of the arc bottom type wire winding slot is recessed to the outer side, so that its accommodation space is larger than that of the flat bottom type wire winding slot, and the wire winding area is larger. However, due to the limitation of the slot width, it cannot meet the demand of the wire to run straight, often leading to that the inductance coil cannot smoothly approach the root of the wire winding slot outside, and further causing unstable wire winding, so as to cause problems such as shortening of the service life of the rotating electrical machine and reduction of the efficiency.

[0058] Therefore, how to provide a stator skeleton structure which can not only ensure the wire winding slot space, but also improve the wire winding stability, becomes a technical problem to be solved in the field.

[0059] In order to solve the above technical problems, as one aspect of the present application, a stator skeleton is provided, as shown in Figures 3 to 7As shown, a winding groove 500 extending around the core mounting hole 400 is formed on the outer surface of the stator frame. The winding groove 500 has an oblique transition portion 101 on at least one side wall, and the oblique transition portion 101 has a guide surface a1. The guide surface a1 is disposed facing the bottom wall c of the winding groove 500 and the opposite side wall. The side wall a0 of the corresponding side of the winding groove 500 is connected between the guide surface a1 and the bottom wall c of the winding groove 500.

[0060] In the stator frame provided by this utility model, the winding slot 500 is used to wind wire to form an inductor coil 20. The side wall of the winding slot 500 has an oblique transition portion 101. The guide surface a1 of the oblique transition portion 101 is inclined into the winding slot 500, thereby expanding the accommodating space of the winding slot 500 so that the winding slot 500 can accommodate more coil turns while ensuring the stability of the inductor coil 20.

[0061] Specifically, in addition to the guide surface a1, the outer side of the winding slot 500 also has a straight sidewall a0 that limits the inductor coil 20, thus... Figure 12 As shown, the winding groove 500 has more winding space compared to the existing flat-bottomed winding groove. The shaded area above the dotted line in the figure represents the extra space. Compared to the existing arc-bottomed winding groove, the difference in height between the outer end of the winding groove 500 and the opening at the inclined transition section 101 in this invention is smaller. This makes it less likely for the wire to trip due to the difference in height between the inclined transition section 101 and the side wall a0 of the winding groove 500, making it difficult to wind straight. During winding, the inductor coil 20 is more likely to come closer to the corner of the winding groove 500, ensuring the full coverage of the winding groove.

[0062] Furthermore, the straight sidewall a0 located between the guide surface a1 and the bottom wall of the winding slot 500 can support the inductor coil 20, prevent the edge winding from collapsing, thereby further improving the winding slot fill factor and ensuring the life and mechanical efficiency of the rotary motor.

[0063] Optionally, such as Figures 3 to 7 As shown, the stator frame extends along the preset axis direction x, and a core mounting hole 400 is formed in the stator frame that extends along the preset radial direction y. The winding groove 500 extends circumferentially around the core mounting hole 400. That is, the core mounting hole 400 in the stator frame is used to accommodate the stator core 10.

[0064] It is understandable that the motor stator obtained by installing the stator frame and stator core 10 needs to be distributed circumferentially and wrapped around the rotor. The preset radial direction y is the radial direction of the circular structure formed by multiple motor stators, and the axial direction of the circular structure formed by multiple motor stators is called the preset axial direction x.

[0065] As an optional embodiment of this utility model, such as Figures 3 to 5As shown in the figure, the stator framework includes an outer end portion 100, a winding portion 200 and an inner end portion 300 connected in sequence along a preset radial direction y, the outer end portion 100, the winding portion 200 and the inner end portion 300 all extend along a preset axial direction x, the preset axial direction x intersects the preset radial direction y, a winding slot 500 is formed between the outer end portion 100 and the inner end portion 300, and a core mounting hole 400 penetrates the outer end portion 100, the winding portion 200 and the inner end portion 300 along the preset radial direction y.

[0066] It can be understood that the size of the outer end portion 100 is greater than the size of the inner end portion 300, when a plurality of motor stators are arranged in a circle, the outer end portion 100 of the stator framework is located on the outer side, and the inner end portion 300 of the stator framework is located on the inner side.

[0067] As an optional embodiment of the utility model, as shown in the figure, Figures 3 to 4 The outer end portion 100 and the inner end portion 300 both extend along an arc surface, the axes of the arc surfaces of the two extend along the preset axial direction x and are located on the side of the inner end portion 300 away from the outer end portion 100.

[0068] As an optional embodiment of the utility model, as shown in the figure, Figure 3 An outer core groove 110 is formed on the surface of the side of the outer end portion 100 away from the inner end portion 300, for accommodating the outer end structure of the stator core 10.

[0069] As an optional embodiment of the utility model, as shown in the figure, Figure 3 An inner core groove 310 is formed on the surface of the side of the inner end portion 300 away from the outer end portion 100, for accommodating the inner end structure of the stator core 10.

[0070] As a preferred embodiment of the utility model, as shown in the figure, Figures 3 to 4 The outer end portion 100 has a positioning protrusion 120 at least at one end along the preset axial direction x, the positioning protrusion 120 is used for being inserted into a positioning hole on a driving circuit board in the rotary motor, so as to ensure the stability of the relative position relationship between the plurality of motor stators through the limiting effect of the driving circuit board, and further ensure the overall structural stability of the rotary motor.

[0071] As a preferred embodiment of the utility model, as shown in the figure, Figures 3 to 4 An installation hole 130 extending along the preset axial direction x is further formed on the end face of the outer end portion 100, the installation hole 130 can be used for being fitted into a fastener (such as a screw, a pin, etc.), so as to realize assembly connection with the driving circuit board or the rotary motor shell through the fastener.

[0072] As a preferred embodiment of the utility model, as shown in the figure, Figures 3 to 4As shown in the figure, the winding slot 500 is formed with a winding guide slot 140 on the side wall on at least one side along the preset axis direction x, the winding guide slot 140 is connected with the end surface of the outer end portion 100 along the preset axis direction x, and the first two ends of the inductor coil 20 pass through the winding guide slot 140, so that the wiring between the inductor coil 20 and the driving circuit board is tightened by the winding guide slot 140, thereby ensuring the stability of the inductor coil 20.

[0073] As an optional embodiment of the utility model, as shown in the figure, Figures 3 to 6 As shown in the figure, the stator framework can include a plurality of framework parts, and the plurality of framework parts are spliced to form the stator framework and the core mounting hole 400 along the preset axis direction x, that is, the plurality of framework parts are spliced together to form the core mounting hole 400, so that the stator framework can be disassembled and surrounded around the stator core 10 when the motor stator is assembled, and the stator framework in the embodiment of the utility model can be suitable for tooth yoke type spliced core.

[0074] As an optional embodiment of the utility model, as shown in the figure, Figures 3 to 6 As shown in the figure, the stator framework includes a pair of framework parts, and the two framework parts are identical in shape, so that a set of processing molds can be used together for manufacturing a plurality of framework parts, thereby reducing the manufacturing difficulty and cost of the stator framework. For example, as shown in the figure, Figures 3 to 6 As shown in the figure, the outer end portion 100 is provided with a positioning protrusion 120 at both ends along the preset axis direction x, the winding slot 500 is formed with a winding guide slot 140 on the side wall on both sides along the preset axis direction x, and the mounting hole 130 is formed on the end surface of the outer end portion 100 at both ends along the preset axis direction x.

[0075] Alternatively, as another optional embodiment of the utility model, the stator framework can also be formed in one piece, and the stator core 10 can be a split structure, for example, the outer magnetic conducting portion 11, the connecting portion and the inner magnetic conducting portion 12 of the stator core 10 are spliced and connected with each other, or the stator core 10 is disconnected at the connecting portion, or the stator core 10 is disconnected at the position where the connecting portion is connected with the outer magnetic conducting portion 11 or the inner magnetic conducting portion 12, so that the outer magnetic conducting portion 11 and the inner magnetic conducting portion 12 can be mounted to the stator framework from both sides of the core mounting hole 400, and the stator framework in the embodiment of the utility model can be suitable for spliced circular core.

[0076] As a preferred embodiment of the utility model, as shown in the figure, Figures 3 to 6 As shown in the figure, the guide surface a1 is an arc surface concave inward.

[0077] It can be understood that if the guide surface a1 extends to the bottom wall of the winding slot 500, the shape at this position is consistent with the shape of the arc side wall of the arc bottom type winding slot, and the utility model is equivalent to filling the corner of the winding slot 500 flat by using the side wall a0 part, as shown in the figure, Figure 12As shown, the size of the arc bottom type winding groove side wall inner recess is a, the side wall a0 filling thickness is b, and the thickness b is preferably half of the size a, that is, b=a / 2.

[0078] As a preferred embodiment of the utility model, as shown in Figures 3 to 6 As shown, the oblique transition part 101 extends along the length direction of the corresponding side of the winding groove 500, and the end of the oblique transition part 101 has a chamfered slope a2, which is transitionally connected between the guide surface a1 and the side wall of the winding groove 500.

[0079] In the embodiment of the utility model, the end of the oblique transition part 101 also has a chamfered slope a2, which is transitionally connected between the guide surface a1 and the side wall of the winding groove 500, so that when the inductor coil 20 is wound to the position where the oblique transition part 101 is located, it can be smoothly wound to one side of the oblique transition part 101 under the guidance of the chamfered slope a2, without the problem of difficult straight walking due to the step structure between the oblique transition part 101 and the side wall of the winding groove 500, ensuring that the inductor coil 20 is close to one end outside the winding groove 500, improving the winding groove fullness, and further ensuring the service life and mechanical efficiency of the rotating motor.

[0080] As a preferred embodiment of the utility model, as shown in Figures 3 to 6 As shown, the oblique transition part 101 has a chamfered slope a2 at both ends along the preset axis direction x, so that the winding can smoothly cut into and cut out the area where the oblique transition part 101 is arranged, ensuring the smoothness of the entire winding process to ensure the winding groove fullness.

[0081] As a preferred embodiment of the utility model, as shown in Figure 7 As shown, the side of the oblique transition part 101 away from the bottom wall of the winding groove 500 has an outer connecting surface a3, and the two sides of the outer connecting surface a3 along the preset radial direction y are respectively connected with the guide surface a1 and the outer end part 100.

[0082] As a preferred embodiment of the utility model, as shown in Figure 4 As shown, the side wall of the winding groove 500 between the bottom wall and the oblique transition part 101 is perpendicular to the bottom wall thereof.

[0083] As a preferred embodiment of the utility model, as shown in Figures 3 to 4 As shown, the oblique transition part 101 is arranged in pairs on the opposite sides of the stator framework (i.e. on both sides of the winding part 200 along the preset axis direction x or the preset circumferential direction z).

[0084] As a preferred embodiment of the utility model, as shown in Figures 3 to 4As shown in the drawings, the oblique transition part 101 is arranged in pairs on both sides of the iron core mounting hole 400 along the preset circumferential direction z, and the preset circumferential direction z intersects with the preset axial direction x and the preset radial direction y.

[0085] As an optional embodiment of the utility model, the preset circumferential direction z, the preset axial direction x and the preset radial direction y are perpendicular to each other in pairs.

[0086] As a preferred embodiment of the utility model, as shown in the drawings, Figure 5 As shown in the drawings, the depth of at least one side of the wire slot 500 gradually increases towards the side of the oblique transition part 101.

[0087] In the embodiment of the utility model, the bottom wall outside of the partial area of the wire slot 500 gradually inclines inward, so that when the wire is wound to the bottom wall of the wire slot 500 on this side, the wire can be automatically close to the outside under the guidance of the inclined designed bottom wall, further ensuring the stability of the wire winding.

[0088] As an optional embodiment of the utility model, as shown in the drawings, Figure 5 As shown in the drawings, the depth of both sides of the wire slot 500 along the preset axial direction x gradually increases towards the side of the oblique transition part 101.

[0089] As a preferred embodiment of the utility model, as shown in the drawings, Figure 4 As shown in the drawings, the side wall of the wire slot 500 opposite to the oblique transition part 101 includes a limiting inclined surface b1 and a limiting flat surface b2, the limiting inclined surface b1 is connected between the limiting flat surface b2 and the bottom wall of the wire slot 500, the distance between the limiting inclined surface b1 and the opposite side wall gradually increases in the direction away from the bottom wall, and the limiting flat surface b2 is arranged towards the opposite side wall a0.

[0090] In the embodiment of the utility model, in addition to the limiting inclined surface b1 adapted to the arc-shaped structure, the side wall of the wire slot 500 inside also has a limiting flat surface b2, the limiting flat surface b2 is arranged opposite to the opposite side wall a0, so that when the wire winding thickness reaches the limiting flat surface b2, the limiting flat surface b2 can limit the wire winding range together with the opposite side wall a0, prevent the wire harness from collapsing, and further ensure the stability of the wire winding.

[0091] As an optional embodiment of the utility model, as shown in the drawings, Figure 4 As shown in the drawings, the limiting flat surface b2 is parallel to the side wall of the wire slot 500 between the bottom wall and the oblique transition part 101.

[0092] As a second aspect of the utility model, a motor stator is provided, as shown in the drawings, Figures 8 to 12 As shown in the drawings, the motor stator includes a stator core 10 and a stator framework provided by the embodiment of the utility model, and the stator core 10 is fixedly connected with the stator framework.

[0093] In the motor stator, the side wall of the winding slot 500 has the oblique transition part 101, the guide surface a1 of the oblique transition part 101 is inclined to the winding slot 500, so that the accommodation space of the winding slot 500 is enlarged, and the inductance coil 20 stability is ensured while the winding slot 500 can accommodate more coil turns.

[0094] Specifically, in addition to the guide surface a1, the straight side wall a0 of the outer side of the winding slot 500 also has a limiting effect on the inductance coil 20, so that, as shown in the figure, Figure 12 The winding slot 500 has more winding space compared with the existing flat bottom type winding slot; and compared with the existing arc bottom type winding slot, the difference between the outer end of the winding slot 500 and the opening between the oblique transition part 101 in the utility model is smaller, so that the problem of wire tangling and difficulty in straightening due to the difference between the oblique transition part 101 and the side wall a0 of the winding slot 500 is not easy to occur, and the inductance coil 20 is more easily close to the corner of the winding slot 500 during winding, so as to ensure the winding slot fullness.

[0095] In addition, the straight side wall a0 between the guide surface a1 and the bottom wall of the winding slot 500 can support the inductance coil 20, prevent edge winding from collapsing, and further improve the winding slot fullness, so as to ensure the service life and mechanical efficiency of the rotating motor.

[0096] Optionally, as shown in the figure, Figure 3 The stator skeleton is formed with the through iron core mounting hole 400, as shown in the figure, Figures 8 to 12 The stator core 10 is accommodated and arranged in the iron core mounting hole 400.

[0097] As an optional embodiment of the utility model, as shown in the figure, Figure 8 The stator core 10 comprises an outer magnetic conducting part 11, a connecting part (not shown in the figure) and an inner magnetic conducting part 12 connected in sequence, and the connecting part is accommodated and arranged in the iron core mounting hole 400.

[0098] As an optional embodiment of the utility model, as shown in the figure, Figure 3 The surface of the outer end part 100 is formed with an outer iron core groove 110, as shown in the figure, Figure 8 The outer magnetic conducting part 11 is accommodated and arranged in the outer iron core groove 110.

[0099] As an optional embodiment of the utility model, as shown in the figure, Figure 3 The surface of the inner end part 300 is formed with an inner iron core groove 310, as shown in the figure, Figure 8 The inner magnetic conducting part 12 is accommodated and arranged in the inner iron core groove 310.

[0100] As an optional embodiment of the utility model, as shown in the figure, Figure 12As shown, the motor stator further comprises an inductor coil 20, and the inductor coil 20 is wound in the winding slot 500 of the motor stator.

[0101] Optionally, the inductor coil 20 is made of enameled wire.

[0102] As a third aspect of the present application, a rotary motor is provided, which comprises a shell, a rotor assembly and the motor stator provided in the embodiments of the present application, the rotor assembly is movably arranged in the shell, and a plurality of motor stators are arranged around the rotor assembly and fixedly connected with the shell, and the winding slot 500 of the motor stator is wound with the inductor coil 20.

[0103] In the rotary motor provided by the present application, the side wall of the winding slot 500 has an oblique transition part 101, and the guide surface a1 of the oblique transition part 101 is inclined to the winding slot 500, thereby expanding the accommodating space of the winding slot 500, so that the winding slot 500 can accommodate more turns of the coil while ensuring the stability of the inductor coil 20.

[0104] Specifically, in addition to the guide surface a1, the straight side wall a0 outside the winding slot 500 also plays a limiting role for the inductor coil 20, so that Figure 12 As shown, compared with the existing flat bottom type winding slot, the winding slot 500 has more winding space; and compared with the existing arc bottom type winding slot, the difference between the outer end of the winding slot 500 and the opening between the oblique transition part 101 in the present application is smaller, so that the problem of being difficult to walk straight due to the difference between the oblique transition part 101 and the side wall a0 of the winding slot 500 is not easy to occur, and the inductor coil 20 is more easily close to the corner of the winding slot 500 during winding, thereby ensuring the winding slot fullness.

[0105] Moreover, the straight side wall a0 between the guide surface a1 and the bottom wall of the winding slot 500 can support the inductor coil 20, prevent the edge winding from collapsing, thereby further improving the winding slot fullness and ensuring the service life and mechanical efficiency of the rotary motor.

[0106] As an optional embodiment of the present application, the rotary motor further comprises a driving circuit board, the driving circuit board is arranged in the shell, the driving circuit board has a plurality of positioning holes, at least one end of the outer end part 100 along the preset axis direction x has a positioning protrusion 120, the positioning protrusion 120 of the motor stator is accommodated in the positioning hole, and the driving circuit board is further used for supplying power to the inductor coils 20 of the plurality of motor stators.

[0107] As a fourth aspect of the present application, a carrier is provided, which comprises a vehicle body, at least one rotary motor and a plurality of travel wheels, the travel wheels are arranged on the vehicle body, the rotary motor can drive the travel wheels to rotate to drive the vehicle body to move, and the rotary motor is the rotary motor provided in the embodiments of the present application.

[0108] In the trolley provided by the utility model, the side wall of the winding groove 500 in the stator framework of the rotating motor has an oblique transition part 101, the guide surface a1 of the oblique transition part 101 is inclined to the winding groove 500, so that the accommodation space of the winding groove 500 is enlarged, the winding groove 500 can accommodate more turns of coils, and the stability of the inductor coil 20 is ensured.

[0109] Specifically, in addition to the guide surface a1, the straight side wall a0 outside the winding groove 500 also has a limiting effect on the inductor coil 20, so that, as shown in the drawing, Figure 12 Compared with the existing flat bottom type winding groove, the winding groove 500 has more winding space; and compared with the existing arc bottom type winding groove, the difference between the outer end of the winding groove 500 and the opening between the oblique transition part 101 in the utility model is smaller, so that the problem of entanglement and difficulty in walking straight due to the difference between the oblique transition part 101 and the side wall a0 of the winding groove 500 is not prone to occur, the inductor coil 20 is more easily close to the corner of the winding groove 500 during winding, and the winding groove fullness is ensured.

[0110] In addition, the straight side wall a0 between the guide surface a1 and the bottom wall of the winding groove 500 can support the inductor coil 20, prevent the edge winding from collapsing, further improve the winding groove fullness, and ensure the service life and mechanical efficiency of the rotating motor.

[0111] Optionally, the trolley provided by the utility model can be an automated guided vehicle (AGV).

[0112] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, and those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific embodiment. Any modification without deviating from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A stator core, a wire slot (500) extending in a circumferential direction of the stator core being formed on an outer surface of the stator core, characterized in that, The oblique transition part (101) is arranged on at least one side wall of the wire slot (500), and has a guide surface (a1) arranged towards the bottom wall (c) and the opposite side wall of the wire slot (500), and the side wall (a0) of the corresponding side of the wire slot (500) is connected between the guide surface (a1) and the bottom wall (c) of the wire slot (500).

2. The stator former of claim 1, wherein The oblique transition part (101) extends along the length direction of the corresponding side of the wire slot (500), and the end of the oblique transition part (101) has a chamfered bevel (a2) connected between the guide surface (a1) and the side wall of the wire slot (500).

3. The stator former of claim 2, wherein Both ends of the oblique transition part (101) have the chamfered bevel (a2).

4. The stator former of claim 1, wherein The oblique transition part (101) is arranged on both sides of the stator frame.

5. The stator former of claim 1, wherein The depth of at least one side of the wire slot (500) gradually increases towards the side of the oblique transition part (101).

6. The stator former of claim 1, wherein The side wall of the wire slot (500) opposite to the oblique transition part (101) comprises a limiting bevel (b1) and a limiting plane (b2), the limiting bevel (b1) is connected between the limiting plane (b2) and the bottom wall of the wire slot (500), the distance between the limiting bevel (b1) and the opposite side wall gradually increases away from the bottom wall, and the limiting plane (b2) is arranged towards the opposite side wall.

7. The stator backbone of any one of claims 1 to 5, wherein, The stator frame comprises an outer end part (100), a wire winding part (200) and an inner end part (300) connected in sequence along a preset radial direction, the outer end part (100), the wire winding part (200) and the inner end part (300) all extend along a preset axial direction, the preset axial direction intersects the preset radial direction, and the wire slot (500) is formed between the outer end part (100) and the inner end part (300).

8. An electric machine stator, characterized by The motor stator comprises a stator core (10) and the stator frame of any one of claims 1 to 7, and the stator core (10) is fixedly connected with the stator frame.

9. A rotary electric machine characterized by comprising: The rotary motor comprises a housing, a rotor assembly and a plurality of motor stators of claim 8, the rotor assembly is movably arranged in the housing, a plurality of motor stators are arranged around the rotor assembly and fixedly connected with the housing, and the wire slot (500) of the motor stator is wound with an inductor coil (20).

10. A truck comprising a truck body, at least one rotary motor and a plurality of travel wheels, said travel wheels being disposed on said truck body, said rotary motor being capable of driving said travel wheels to rotate to move said truck body, characterized in that, The rotary motor is the rotary motor of claim 9. The rotary motor is the rotary motor of claim 9.

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