Stator structure for improving working efficiency of motor

Abstract

The utility model discloses a stator structure for improving the working efficiency of a motor, which comprises a plurality of laminations, the plurality of laminations are attached to each other, stator mounting holes are arranged in the laminations, the laminations are provided with coil slots communicated with the stator mounting holes, the laminations are provided with self-buckling structures, and the self-buckling structures are connected with the stator mounting holes. The self-buckling structure comprises a self-buckling groove, a first inclined buckling plate and a second inclined buckling plate, the other end of the self-buckling groove is fixedly connected with the end, away from the first inclined buckling plate, of the second inclined buckling plate, and the first inclined buckling plate and the second inclined buckling plate on the laminations are connected with the adjacent laminations on the two sides in a clamped mode respectively. And the first inclined buckle plate and the second inclined buckle plate are arranged along the direction close to the stator mounting hole. The beneficial effects of the utility model are that the adjacent laminations are clamped with the side surfaces of the first inclined pinch plate and the second inclined pinch plate, thereby preventing the first inclined pinch plate and the second inclined pinch plate from sliding out of the adjacent self-catching grooves, guaranteeing the service life of the motor and the working efficiency of the motor, and achieving the advantage of good reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stator structure, specifically relates to a stator structure of improving motor work efficiency. BACKGROUND

[0002] With the rapid development of economy and technology, the global industrialization process is accelerating, resulting in a large amount of waste gas and wastewater discharge, which seriously affects the quality of atmospheric, water quality and soil and other environmental resources. The exhaust gas emitted by traditional internal combustion engine vehicles contains a large amount of harmful substances, such as carbon dioxide, nitrogen oxides and particulate matter, which poses a serious threat to the environment and human health. Electric vehicles using clean electric energy are the main development direction of new energy vehicles on the market. Electric machines are used in new energy vehicles for driving, so the working efficiency of the electric machine is particularly important to the performance of the new energy vehicle.

[0003] The Chinese utility model patent with publication number CN206921637U discloses a self-buckling motor core lamination, which comprises a plurality of core laminations stacked one above another, the middle part of each core lamination is provided with a through shaft hole, the upper end surface of each core lamination is uniformly provided with a plurality of self-buckling recesses around the through shaft hole, and the lower end surface of each core lamination is provided with a self-buckling protrusion corresponding to each self-buckling recess. When the core laminations are stacked, the self-buckling protrusions on the upper core laminations are buckled with the self-buckling recesses on the adjacent lower core laminations. The structure is simple, has a self-buckling structure, and the core can be assembled by buckling directly during assembly, thereby greatly improving the production efficiency and preventing the core laminations from falling off.

[0004] The core laminations are stacked to form a stator core, and the edges of the core laminations need to be fixed to each other by welding to maintain the stability of the structure of the stator core. If the self-buckling structure is missing inside the core, the probability of loosening between the core laminations increases, noise is generated, and the efficiency of the motor is affected. The self-buckling protrusions of the above-mentioned self-buckling motor core lamination are inclined after the core is subjected to a circumferential torque, and the self-buckling protrusions are easy to slide out of the self-buckling recesses, which reduces the working efficiency of the motor and reduces the structural reliability. Therefore, the stator core structure in the prior art has the problem of poor reliability. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a stator structure for improving the working efficiency of a motor, which comprises a plurality of core laminations and has the advantage of good reliability.

[0006] In order to achieve the above-mentioned utility model purposes, the technical scheme adopted by the utility model is as follows:

[0007] The utility model provides a stator structure of improving motor work efficiency, including a plurality of laminated sheets, a plurality of the laminated sheet mutually pastes, be equipped with stator mounting hole in the laminated sheet, the laminated sheet is equipped with the coil slot with stator mounting hole intercommunication, the laminated sheet is equipped with self buckling structure, the self buckling structure includes self buckling groove, first inclined buckle plate and second inclined buckle plate, first inclined buckle plate and second inclined buckle plate are all in self buckling groove, one end of self buckling groove is fixedly connected with the one end of first inclined buckle plate away from second inclined buckle plate, the other end of self buckling groove is fixedly connected with the one end of second inclined buckle plate away from first inclined buckle plate, the direction of first inclined buckle plate and second inclined buckle plate is same, the upper end of first inclined buckle plate is fixedly connected with the laminated sheet, the lower end of second inclined buckle plate is fixedly connected with the laminated sheet, first inclined buckle plate and second inclined buckle plate on the laminated sheet are respectively clamped with two sides adjacent laminated sheet, first inclined buckle plate and second inclined buckle plate are arranged along the direction close to stator mounting hole.

[0008] Through such setting: adjacent laminated sheet and the side of first inclined buckle plate and second inclined buckle plate clamped, prevent first inclined buckle plate and second inclined buckle plate from sliding out from adjacent self buckling groove, play the role of guaranteeing motor service life and motor work efficiency, have reached the advantage that reliability is better.

[0009] As preferred, first inclined buckle plate and second inclined buckle plate cooperate with the width of self buckling groove in width.

[0010] Through such setting: play the role of improving the structural stability between adjacent laminated sheet.

[0011] As preferred, the angle of first inclined buckle plate on the laminated sheet is less than 30 DEG.

[0012] Through such setting: prevent a plurality of laminated sheets from being stuck by first inclined buckle plate during pasting and causing a plurality of laminated sheets unable to paste.

[0013] As preferred, the angle of second inclined buckle plate on the laminated sheet is less than 30 DEG.

[0014] Through such setting: prevent a plurality of laminated sheets from being stuck by second inclined buckle plate during pasting and causing a plurality of laminated sheets unable to paste.

[0015] As preferred, the length of self buckling groove is greater than the sum of the length of first inclined buckle plate and the length of second inclined buckle plate.

[0016] Through such setting: play the role of improving structural stability.

[0017] As preferred, the edge of laminated sheet is equipped with a plurality of key grooves, and a plurality of key grooves are uniformly distributed in circumference.

[0018] Through such setting: play the role of accurately positioning laminated sheet.

[0019] Preferably, the lamination edge is provided with a plurality of welding grooves, and the plurality of welding grooves are uniformly distributed in the circumference.

[0020] By such an arrangement, the structural stability of the stator core is improved.

[0021] Preferably, the bottom of the welding groove is provided with a protrusion, and the two sides of the protrusion are provided with a molten pool.

[0022] By such an arrangement, the structural stability of the stator core is improved.

[0023] Preferably, the lamination edge is provided with a plurality of marking grooves, and the plurality of marking grooves are uniformly distributed in the circumference.

[0024] By such an arrangement, the plurality of laminations are conveniently aligned with each other.

[0025] Preferably, a plurality of self-locking structures are provided, and the plurality of self-locking structures are uniformly distributed in the circumference.

[0026] By such an arrangement, the structural stability between the plurality of laminations is improved.

[0027] Compared with the prior art, the utility model has the beneficial technical effects:

[0028] 1. When assembling the stator core, the plurality of laminations are adhered to each other, and the self-locking grooves on the plurality of laminations are corresponded, so that the first inclined locking plate and the second inclined locking plate on the laminations clamped in the core are respectively clamped into the self-locking grooves on the two adjacent sides and are clamped with the laminations on the two adjacent sides, the function of self-locking of the adjacent laminations is realized, the press fitting is facilitated, and the production is fast.

[0029] 2. Since the first inclined locking plate and the second inclined locking plate are arranged along the direction close to the stator mounting hole, the laminations adjacent to each other are clamped with the side surfaces of the first inclined locking plate and the second inclined locking plate, the first inclined locking plate and the second inclined locking plate are respectively clamped with the laminations adjacent to each other through the side surfaces perpendicular to the laminations, and then the laminations adjacent to each other can exert the thrust along the circumferential direction of the laminations on the first inclined locking plate and the second inclined locking plate, so that the first inclined locking plate and the second inclined locking plate are prevented from sliding out of the self-locking grooves adjacent to each other, the service life of the motor and the working efficiency of the motor are ensured, and the good reliability is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of a stator structure for improving the working efficiency of a motor in the embodiment 1 of the utility model;

[0031] Figure 2 is an enlarged view of A in the utility model Figure 1 .

[0032] Figure 3is a structure schematic view of the self-buckling structure in the embodiment 1 of the utility model;

[0033] Figure 4 is a structure schematic view of the stator structure for improving the working efficiency of the motor in the embodiment 2 of the utility model.

[0034] Among them, the technical features referred to by each reference sign are as follows:

[0035] 11, iron core; 12, lamination; 13, stator mounting hole; 14, coil slot; 15, key groove; 16, welding groove; 17, protrusion; 18, molten pool; 19, marking groove; 21, self-buckling groove; 22, first inclined buckling plate; 23, second inclined buckling plate; 24, first side face; 25, second side face; 31, first clamping pin; 32, second clamping pin; 33, first lamination face; 34, second lamination face; 35, first inclined lamination face; 36, second inclined lamination face. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further detailed in the utility model with examples, but the scope of protection of the utility model is not limited to the following specific examples.

[0037] Reference Figure 1 , Figure 2 and Figure 3 A stator structure for improving the working efficiency of the motor, comprising a plurality of laminations 12, the plurality of laminations 12 are laminated with each other.

[0038] The lamination 12 is provided with a stator mounting hole 13, the lamination 12 is provided with a coil slot 14 in communication with the stator mounting hole 13, the lamination 12 is provided with a self-buckling structure, the self-buckling structure comprises a self-buckling groove 21, a first inclined buckling plate 22 and a second inclined buckling plate 23, the first inclined buckling plate 22 and the second inclined buckling plate 23 are located in the self-buckling groove 21, one end of the self-buckling groove 21 is fixedly connected with the end of the first inclined buckling plate 22 away from the second inclined buckling plate 23, the other end of the self-buckling groove 21 is fixedly connected with the end of the second inclined buckling plate 23 away from the first inclined buckling plate 22, and the lamination 12, the first inclined buckling plate 22 and the second inclined buckling plate 23 are integrally formed. The directions of the first inclined buckling plate 22 and the second inclined buckling plate 23 are same, the upper end of the first inclined buckling plate 22 is fixedly connected with the lamination 12, the lower end of the second inclined buckling plate 23 is fixedly connected with the lamination 12, the first inclined buckling plate 22 and the second inclined buckling plate 23 on the lamination 12 are respectively clamped with the two adjacent laminations 12, and the first inclined buckling plate 22 and the second inclined buckling plate 23 are arranged along the direction close to the stator mounting hole 13.

[0039] The two ends of the first inclined buckle plate 22 and the second inclined buckle plate 23 in the width direction are provided with a first side 24 and a second side 25 perpendicular to the laminations 12, and the first inclined buckle plate 22 and the second inclined buckle plate 23 are respectively clamped with the adjacent laminations 12 through the first side 24 and the second side 25. The width of the first inclined buckle plate 22 and the second inclined buckle plate 23 matches the width of the self-buckling groove 21. The first inclined buckle plate 22 and the second inclined buckle plate 23 can be matched with the self-buckling grooves 21 on the two adjacent sides respectively, so that the first inclined buckle plate 22 and the second inclined buckle plate 23 are more closely matched with the laminations 12 on the two adjacent sides, thereby improving the structural stability between the adjacent laminations 12. The angle of the first inclined buckle plate 22 inclined on the lamination 12 is less than 30°, which ensures that the first inclined buckle plate 22 can be clamped into the adjacent self-buckling groove 21, and prevents the laminations 12 from being clamped by the first inclined buckle plate 22 during the process of being attached, so that the laminations 12 cannot be attached. The angle of the second inclined buckle plate 23 inclined on the lamination 12 is less than 30°, which ensures that the second inclined buckle plate 23 can be clamped into the adjacent self-buckling groove 21, and prevents the laminations 12 from being clamped by the second inclined buckle plate 23 during the process of being attached, so that the laminations 12 cannot be attached. The length of the self-buckling groove 21 is greater than the sum of the length of the first inclined buckle plate 22 and the length of the second inclined buckle plate 23. The larger length of the self-buckling groove 21 can increase the distance between the first inclined buckle plate 22 and the second inclined buckle plate 23, so that the first inclined buckle plate 22 and the second inclined buckle plate 23 can provide support to the laminations 12 at different positions, and can prevent stress concentration, thereby effectively improving the structural stability of the laminations 12.

[0040] The edge of the lamination 12 is provided with a plurality of key grooves 15, and the plurality of key grooves 15 are uniformly distributed in the circumference. By clamping the positioning key into the key groove 15, the lamination 12 is precisely positioned. The edge of the lamination 12 is provided with a plurality of welding grooves 16, and the plurality of welding grooves 16 are uniformly distributed in the circumference. The plurality of laminations 12 are welded and fixed along the welding groove 16, thereby improving the structural stability of the stator core 11. The bottom of the welding groove 16 is provided with a protrusion 17, and the two sides of the protrusion 17 are provided with a molten pool 18. The molten droplets generated by welding enter the molten pool 18 on both sides of the protrusion 17, and after the molten droplets cool and solidify, they can be clamped with the protrusion 17 on both sides along the circumferential direction of the stator core 11, thereby improving the load bearing capacity of the stator core 11 in the circumferential direction and improving the structural stability of the stator core 11. The edge of the lamination 12 is provided with a plurality of marking grooves 19, and the plurality of marking grooves 19 are uniformly distributed in the circumference. During the installation of the lamination 12, the lamination 12 is roughly positioned through the marking groove 19, thereby facilitating the alignment of the plurality of laminations 12. A plurality of self-buckling structures are provided, and the plurality of self-buckling structures are uniformly distributed in the circumference. By clamping the plurality of self-buckling structures with the adjacent laminations 12, the structural stability between the plurality of laminations 12 is improved.

[0041] The plurality of laminations 12 are adhered to each other to form the core 11, and the stator coil is wound in the coil slot 14, and the electromagnetic field is generated after the current is passed into the stator coil, and the magnet in the rotor is driven to rotate by the electromagnetic field, thereby realizing the function of driving the motor rotor to move.

[0042] The embodiment has the following advantages:

[0043] When assembling the stator core 11, the plurality of laminations 12 are adhered to each other, and the self-locking grooves 21 on the plurality of laminations 12 are corresponded, so that the first inclined locking plate 22 and the second inclined locking plate 23 clamped on the lamination 12 inside the core 11 are respectively clamped into the self-locking grooves 21 on the adjacent two sides, and are clamped with the adjacent two laminations 12, thereby realizing the function of self-locking of the adjacent laminations, facilitating the press fitting, and enabling fast production.

[0044] Since the first inclined locking plate 22 and the second inclined locking plate 23 are arranged along the direction close to the stator mounting hole 13, the adjacent laminations 12 are clamped with the side surfaces of the first inclined locking plate 22 and the second inclined locking plate 23, and the first inclined locking plate 22 and the second inclined locking plate 23 are respectively clamped with the adjacent laminations 12 through the side surfaces perpendicular to the laminations 12, thereby enabling the adjacent laminations 12 to exert a circumferential pushing force on the first inclined locking plate 22 and the second inclined locking plate 23, so as to prevent the first inclined locking plate 22 and the second inclined locking plate 23 from sliding out of the adjacent self-locking grooves 21, thereby playing a role of guaranteeing the service life and working efficiency of the motor, and achieving the advantage of good reliability.

[0045] In the same lamination 12, the first inclined locking plate 22 and the second inclined locking plate 23 can be clamped with the same lamination 12 through the first side surface 24 and the second side surface 25, so that the lamination 12 can provide a supporting force to the first inclined locking plate 22 and the second inclined locking plate 23 fixed on the lamination 12 through the first side surface 24 and the second side surface 25, thereby playing a role of improving the structural stability between the lamination 12, the first inclined locking plate 22 and the second inclined locking plate 23, and achieving the advantage of good structural stability.

[0046] Embodiment 2:

[0047] Reference Figure 4A stator structure for improving the working efficiency of a motor, which is different from the embodiment 1 in that the first clamping pin 31 and the second clamping pin 32 are arranged in the self-locking slot 21. The first clamping pin 31 and the second clamping pin 32 are arranged in the plurality of laminations 12. The first clamping pin 31 is provided with the first abutting surface 33, and the second clamping pin 32 is provided with the second abutting surface 34. The first abutting surface 33 and the second abutting surface 34 are arranged to abut each other. The first clamping pin 31 is provided with the plurality of first inclined clamping surfaces 35 on the side away from the first abutting surface 33. The first inclined clamping surfaces 35 are arranged to be inclined. The first inclined clamping surfaces 35 are arranged to be clamped to the first inclined clamping plate 22 away from the lamination 12. The second clamping pin 32 is provided with the plurality of second inclined clamping surfaces 36 on the side away from the second abutting surface 34. The second inclined clamping surfaces 36 are arranged to be inclined. The second inclined clamping surfaces 36 are arranged to be clamped to the second inclined clamping plate 23 away from the lamination 12.

[0048] During installation, the first clamping pin 31 and the second clamping pin 32 are pressed onto the stator core by extrusion. The first clamping pin 31 and the second clamping pin 32 are arranged to clamp the plurality of laminations 12, thereby locking the plurality of laminations 12 in the circumferential direction. The first inclined clamping surfaces 35 and the second inclined clamping surfaces 36 are arranged to prevent the plurality of laminations 12 from moving in the axial direction, thereby locking the plurality of laminations 12 in the axial direction, and further improving the structural stability of the stator core.

[0049] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application.

Claims

1. A stator structure for improving the working efficiency of an electric machine, comprising a plurality of laminations (12) which are mutually adhered, said laminations (12) being provided with a stator mounting hole (13), said laminations (12) being provided with a coil slot (14) which communicates with the stator mounting hole (13), said laminations (12) being provided with a self-buckling structure, characterized in that: The self-buckling structure comprises a self-buckling groove (21), a first inclined buckling plate (22) and a second inclined buckling plate (23), the first inclined buckling plate (22) and the second inclined buckling plate (23) are located in the self-buckling groove (21), one end of the self-buckling groove (21) is fixedly connected with one end of the first inclined buckling plate (22) away from the second inclined buckling plate (23), the other end of the self-buckling groove (21) is fixedly connected with one end of the second inclined buckling plate (23) away from the first inclined buckling plate (22), the first inclined buckling plate (22) and the second inclined buckling plate (23) have the same inclination direction, the upper end of the first inclined buckling plate (22) is fixedly connected with the laminated sheet (12), the lower end of the second inclined buckling plate (23) is fixedly connected with the laminated sheet (12), the first inclined buckling plate (22) and the second inclined buckling plate (23) on the laminated sheet (12) are respectively clamped with the laminated sheets (12) adjacent to both sides, and the first inclined buckling plate (22) and the second inclined buckling plate (23) are arranged in the direction close to the stator mounting hole (13). ​ 2. The stator structure for improving the operating efficiency of an electric motor according to claim 1, characterized by: The first inclined buckling plate (22) and the second inclined buckling plate (23) are matched with the width of the self-buckling groove (21) in width.

3. The stator structure for improving the operating efficiency of an electric motor according to claim 1, characterized by: The angle of the first inclined buckling plate (22) on the laminated sheet (12) is less than 30°.

4. The stator structure for improving the operating efficiency of an electric motor according to claim 1, characterized by: The angle of the second inclined buckling plate (23) on the laminated sheet (12) is less than 30°.

5. The stator structure for improving the operating efficiency of an electric motor according to claim 1, characterized by: The length of the self-buckling groove (21) is greater than the sum of the length of the first inclined buckling plate (22) and the length of the second inclined buckling plate (23).

6. The stator structure for improving the operating efficiency of an electric motor according to claim 1, characterized by: The edge of the laminated sheet (12) is provided with a plurality of key grooves (15), and the plurality of key grooves (15) are uniformly distributed in the circumference.

7. The stator structure for improving the operating efficiency of an electric motor according to claim 1, characterized by: The edge of the laminated sheet (12) is provided with a plurality of welding grooves (16), and the plurality of welding grooves (16) are uniformly distributed in the circumference.

8. The stator structure for improving the operating efficiency of an electric motor according to claim 7, characterized by: The bottom of the welding groove (16) is provided with a protrusion (17), and the both sides of the protrusion (17) are provided with a molten pool (18).

9. The stator structure for improving the operating efficiency of an electric motor according to claim 1, characterized by: The edge of the laminated sheet (12) is provided with a plurality of marking grooves (19), and the plurality of marking grooves (19) are uniformly distributed in the circumference.

10. The stator structure for improving the operating efficiency of an electric motor according to claim 1, characterized by: A plurality of self-buckling structures are provided, and the plurality of self-buckling structures are uniformly distributed in the circumference.

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