Stator punching sheet structure and stator core

Abstract

The utility model belongs to the technical field of stator iron cores, and particularly relates to a stator punching sheet structure and a stator iron core, the stator punching sheet structure comprises a stator punching sheet mounting assembly, the stator punching sheet mounting assembly comprises a lower bracket, the top of the lower bracket is fixedly connected with a limiting rod, the outer wall of the limiting rod is connected with a stator punching sheet main body in a clamping manner, and the limiting rod is fixedly connected with the lower bracket. The inner wall of the stator punching sheet main body is fixedly connected with tooth grooves, the outer wall of the stator punching sheet main body is provided with heat dissipation holes, and the top of the stator punching sheet main body is provided with an insulation pad. According to the utility model, each layer of stator punching sheet main body can be effectively isolated through the insulation pads, eddy current loss is reduced, in addition, the tooth grooves can ensure excellent electromagnetic performance and reduce magnetic flux leakage, the stator core and the motor base can be installed and connected more firmly, and the silica gel pads can reduce noise during operation, so that the service life of the stator punching sheet is prolonged. And on the other hand, the upper bracket and the lower bracket clamp and lock the stator iron core through the threaded rod, so that the stability of the iron core can be ensured and the iron core is not loosened.

Description

Technical Field

[0001] The utility model relates to the technical field of stator cores, in particular to a stator punching sheet structure and a stator core. Background Art

[0002] The stator core is an important part of the magnetic circuit of an electric motor. Together with the rotor core and the air gap between the stator and the rotor, it forms a complete magnetic circuit of the electric motor. In an asynchronous motor, the magnetic flux in the stator core is alternating, thus generating core losses. The core losses include two parts: hysteresis loss and eddy current loss.

[0003] The existing stator punching sheet structure and stator core connect the stator punching sheets by welding, which makes it impossible to conveniently install and disassemble the stator punching sheets. Moreover, there is no insulation layer between each group of stator punching sheets, which will increase the eddy current loss and cannot ensure the heat dissipation of the stator core.

[0004] Therefore, a stator punching sheet structure and a stator core are proposed to solve the above problems. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the prior art, the utility model solves the problems that connecting the stator punching sheets by welding makes it impossible to conveniently install and disassemble the stator punching sheets, and there is no insulation layer between each group of stator punching sheets, which will increase the eddy current loss and cannot ensure the heat dissipation of the stator core.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a stator punching sheet structure and a stator core of the utility model include a stator punching sheet installation component. The stator punching sheet installation component includes a lower bracket. A limiting rod is fixedly connected to the top of the lower bracket. The outer wall of the limiting rod is snap-fitted with a main stator punching sheet. A tooth groove is fixedly connected to the inner wall of the main stator punching sheet. Heat dissipation holes are formed in the outer wall of the main stator punching sheet. An insulating pad is arranged on the top of the main stator punching sheet. The top of the limiting rod is snap-fitted with an upper bracket.

[0007] Preferably, the main stator punching sheets and the insulating pads are arranged at equal intervals on the outer wall of the limiting rod in sequence. Both the main stator punching sheets and the insulating pads form snap-fitting structures with the limiting rod. The limiting rods are arranged at equal angles on the top of the lower bracket. The upper bracket forms a snap-fitting structure with the limiting rod.

[0008] Preferably, the tooth grooves are arranged at equal angles on the inner wall of the main stator punching sheet. The heat dissipation holes are arranged at equal angles on the outer wall of the main stator punching sheet.

[0009] Preferably, it includes a stator core mounting assembly arranged at the end of the stator lamination mounting assembly, and a locking control assembly is connected to the side of the stator lamination mounting assembly; the stator core mounting assembly includes a connecting seat, one end of the connecting seat is fixedly connected with a mounting plate, and a support plate is fixedly connected to the outer wall of the connecting seat. Mounting holes are formed inside the mounting plate, and a silica gel pad is arranged on the outer wall of the mounting plate.

[0010] Preferably, the mounting holes are arranged equiangularly inside the mounting plate, and the mounting plate, the support plate and the connecting seat form a right triangle with the connecting seat and the mounting plate as the right-angled sides. The silica gel pad is closely attached to the mounting plate.

[0011] Preferably, the locking control assembly includes a fixed seat, a rotating shaft is rotatably connected to the bottom of the fixed seat, anti-slip textures are arranged on the outer wall of the rotating shaft, and a threaded rod is threadedly connected to the bottom of the rotating shaft.

[0012] Preferably, the rotating shaft forms a rotating structure with the stator lamination mounting assembly through the fixed seat, and the rotating shaft and the threaded rod form a threaded connection. The shape of the anti-slip texture is set as a thread shape.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. By providing a stator lamination mounting assembly, insulating pads are arranged between each layer of stator lamination bodies. The insulating pads can effectively isolate each layer of stator lamination bodies, reduce eddy current losses, and heat dissipation holes are formed in the stator lamination bodies to ensure the heat dissipation performance of the iron core. In addition, tooth grooves are provided to ensure excellent electromagnetic performance and reduce magnetic flux leakage;

[0015] 2. By providing a stator core mounting assembly, multiple stator lamination bodies are stacked to form a stator core. The stator core will be installed in the motor base through the mounting holes on the side of the mounting plate. The mounting holes can be designed according to the motor base to ensure the firm installation of the stator core. At the same time, a support plate is provided for support, which can make the stator core fixed more firmly. In addition, by providing a silica gel pad at the bottom of the mounting plate, the stator core can be installed more firmly and the noise during operation can be reduced;

[0016] 3. By providing a locking control assembly, the rotating shaft is rotated through the fixed seat, so that the threaded rod is turned out or the threaded rod is rotated and retracted into the rotating shaft, so that the upper bracket and the lower bracket clamp and lock the stator core, which can ensure the stability of the iron core and ensure no looseness. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the overall side view of the present invention;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the stator punch installation assembly of the present invention;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the tooth groove and heat dissipation hole part of the present invention;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the stator core installation assembly of the present invention;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the locking control assembly of the present invention.

[0023] In the figure: 1. Stator punch installation assembly; 101. Lower bracket; 102. Limit rod; 103. Stator punch main body; 104. Tooth groove; 105. Heat dissipation hole; 106. Insulating pad; 107. Upper bracket; 2. Stator core installation assembly; 201. Connection seat; 202. Installation plate; 203. Support plate; 204. Installation hole; 205. Silicone pad; 3. Locking control assembly; 301. Fixed seat; 302. Rotating shaft; 303. Anti-slip texture; 304. Threaded rod. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Embodiment 1

[0026] Please refer to Figures 1 to 3As shown in the figure, a stator punching structure includes a stator punching installation component 1, and the stator punching installation component 1 includes a lower bracket 101, a limiting rod 102, a stator punching main body 103, tooth grooves 104, heat dissipation holes 105, an insulating pad 106, and an upper bracket 107. The insulating pad 106 can effectively isolate each layer of the stator punching main body 103 and reduce eddy current losses. The stator punching main body 103 and the insulating pad 106 are arranged at equal intervals on the outer wall of the limiting rod 102 in sequence, and both the stator punching main body 103 and the insulating pad 106 form a clamping structure with the limiting rod 102. Moreover, the limiting rod 102 is arranged at equal angles on the top of the lower bracket 101, and the upper bracket 107 forms a clamping structure with the limiting rod 102. The tooth grooves 104 are arranged at equal angles on the inner wall of the stator punching main body 103, and the heat dissipation holes 105 are arranged at equal angles on the outer wall of the stator punching main body 103. By arranging an insulating pad 106 between each layer of the stator punching main body 103, the insulating pad 106 can effectively isolate each layer of the stator punching main body 103 and reduce eddy current losses. Heat dissipation holes 105 are provided on the stator punching main body 103 to ensure the heat dissipation performance of the iron core. In addition, tooth grooves 104 are provided to ensure excellent electromagnetic performance and reduce magnetic flux leakage.

[0027] Please refer to Figure 1 With Figure 4 As shown in the figure, a stator core includes a stator core installation component 2 arranged at the end of the stator punching installation component 1, and a locking control component 3 is connected to the side of the stator punching installation component 1; the stator core installation component 2 includes a connecting seat 201, a mounting plate 202, a support plate 203, mounting holes 204, and a silica gel pad 205, which can make the installation connection between the stator core and the motor base more firm, and the silica gel pad 205 can also reduce the noise during operation. The mounting holes 204 are arranged at equal angles inside the mounting plate 202, and the mounting plate 202, the support plate 203, and the connecting seat 201 form a right triangle with the connecting seat 201 and the mounting plate 202 as the right-angle sides, and the silica gel pad 205 is closely attached to the mounting plate 202; multiple stator punching main bodies 103 are stacked to form the stator core, and the stator core will be installed in the motor base through the mounting holes 204 on the side of the mounting plate 202. The mounting holes 204 can be designed according to the motor base to ensure the firm installation of the stator core. At the same time, a support plate 203 is provided for support, which can make the stator core fixed more firmly. In addition, by providing a silica gel pad 205 at the bottom of the mounting plate 202, the stator core can be installed more firmly and the noise during operation can be reduced.

[0028] Please refer to Figure 1 With Figure 5As shown in the figure, a stator core and a locking control assembly 3 include a fixed seat 301, a rotating shaft 302, anti-slip textures 303, and a threaded rod 304. The upper bracket 107 and the lower bracket 101 clamp and lock the stator core by retracting the length of the threaded rod 304, which can ensure the stability of the core and ensure no looseness. The rotating shaft 302 forms a rotating structure with the stator punching sheet mounting assembly 1 through the fixed seat 301, and the rotating shaft 302 and the threaded rod 304 form a threaded connection. The shape of the anti-slip texture 303 is set as a thread shape. By rotating the rotating shaft 302 through the fixed seat 301, the threaded rod 304 is rotated out or rotated and retracted into the rotating shaft 302, so that the upper bracket 107 and the lower bracket 101 clamp and lock the stator core, which can ensure the stability of the core and ensure no looseness.

[0029] Working principle: First, the stator punching sheet body 103 is a circular sheet structure, and a plurality of tooth grooves 104 are evenly distributed around it. The tooth grooves 104 are designed in a trapezoidal or rectangular shape to ensure excellent electromagnetic performance and reduce magnetic flux leakage. The insulating pad 106 and the stator punching sheet body 103 are fixed to the top of the lower bracket 101 through the limiting rod 102 in turn. At this time, a plurality of stator punching sheet bodies 103 will be stacked, and the whole is cylindrical, thus forming a stator core. An insulating pad 106 is arranged between each layer of stator punching sheet bodies 103, which can effectively isolate each layer of stator punching sheet bodies 103, reduce eddy current loss, and reduce the heating of the core. Subsequently, the upper bracket 107 is fixed to the top of the stator core through the limiting rod 102. At the same time, heat dissipation holes 105 are provided on the stator punching sheet body 103 to ensure the heat dissipation performance of the stator core. Then, rotate the rotating shaft 302. The rotating shaft 302 will rotate through the fixed seat 301, so that the threaded rod 304 is retracted into the rotating shaft 302, thereby shortening the distance between the upper bracket 107 and the lower bracket 101, and thus fastening each layer of stator punching sheet bodies 103 to ensure the stable structure of the core, reduce the vibration and noise generated during operation. At the same time, anti-slip textures 303 are arranged on the side of the rotating shaft 302, which can increase the friction of rotation and avoid slipping of the hand.

[0030] Next, snap the connecting seat 201 to the side of the lower bracket 101 and the upper bracket 107. An installation plate 202 is provided on the side of the connecting seat 201. Installation holes 204 are formed in the installation plate 202. The installation holes 204 are designed according to the motor base, and multiple installation holes 204 are provided. The stator core can be fixed to the motor base through the installation holes 204 on the installation plate 202 to ensure the firm installation of the stator core. By providing a silica gel pad 205 at the bottom of the installation plate 202, the stator core can be installed more firmly, and the noise during operation can be reduced. Moreover, a support plate 203 is provided, which can make the installation of the stator core more firm and stable. Finally, after the installation is completed, when current passes through the windings of the stator, an alternating magnetic field is generated between the teeth and slots 104 of the stator punching body 103. The magnetic field is conducted through the stator core to form a stable magnetic flux path. The rotor rotates in the stator magnetic field, cuts the magnetic lines of force, and generates an electromagnetic induction electromotive force. At this time, through the design of the teeth and slots 104 of the stator punching body 103, the magnetic flux path is optimized, and the electromagnetic induction efficiency is improved. In addition, heat dissipation holes 105 are provided on the side of the stator punching body 103, which can effectively dissipate the heat generated during the working process and keep the temperature of the iron core stable.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A stator punching structure, characterized in that: The invention comprises a stator punching sheet installation assembly (1), wherein the stator punching sheet installation assembly (1) comprises a lower bracket (101), the top of the lower bracket (101) is fixedly connected to a limit rod (102), and the outer wall of the limit rod (102) is snap-connected to a stator punching sheet body (103), the inner wall of the stator punching sheet body (103) is fixedly connected to a tooth groove (104), the outer wall of the stator punching sheet body (103) is provided with a heat dissipation hole (105), and the top of the stator punching sheet body (103) is provided with an insulating pad (106), and the top of the limit rod (102) is snap-connected to an upper bracket (107).

2. A stator punching structure according to claim 1, characterized in that: The stator punching sheet body (103) and the insulating pad (106) are arranged at equal intervals in sequence with respect to the outer wall of the limiting rod (102), and the stator punching sheet body (103) and the insulating pad (106) both form a snap-fit ​​structure with the limiting rod (102), and the limiting rod (102) is arranged at equal angles with respect to the top of the lower bracket (101), and the upper bracket (107) and the limiting rod (102) form a snap-fit ​​structure.

3. A stator punching structure according to claim 1, characterized in that: The tooth grooves (104) are arranged at equal angles with respect to the inner wall of the stator punching body (103), and the heat dissipation holes (105) are arranged at equal angles with respect to the outer wall of the stator punching body (103).

4. A stator core, a stator sheet structure according to any one of claims 1 to 3, characterized in that: It comprises a stator core mounting assembly (2) arranged at the end of a stator punching assembly (1), and a locking control assembly (3) is connected to the side of the stator punching assembly (1); The stator core mounting assembly (2) comprises a connecting seat (201), one end of the connecting seat (201) is fixedly connected to a mounting plate (202), and the outer wall of the connecting seat (201) is fixedly connected to a support plate (203), a mounting hole (204) is provided inside the mounting plate (202), and a silicone pad (205) is provided on the outer wall of the mounting plate (202).

5. A stator core according to claim 4, characterized in that: The mounting holes (204) are arranged at equal angles with respect to the interior of the mounting plate (202), and the mounting plate (202), the support plate (203) and the connecting seat (201) form a right triangle with the connecting seat (201) and the mounting plate (202) as right angles, and the silicone pad (205) and the mounting plate (202) are arranged to fit tightly.

6. A stator core according to claim 4, characterized in that: The locking control assembly (3) comprises a fixed seat (301), the bottom of the fixed seat (301) is rotatably connected to a rotating shaft (302), the outer wall of the rotating shaft (302) is provided with an anti-slip texture (303), and the bottom of the rotating shaft (302) is threadedly connected to a threaded rod (304).

7. A stator core according to claim 6, characterized in that: The rotating shaft (302) forms a rotating structure with the stator punching sheet mounting assembly (1) through the fixing seat (301), and the rotating shaft (302) and the threaded rod (304) form a threaded connection, and the anti-slip texture (303) is configured in a threaded shape.

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