Splicing type motor stator iron core sheet

Abstract

The utility model relates to the technical field of motor stators, in particular to a spliced motor stator iron core sheet, which comprises a stator sleeve, a connecting hole is arranged on the outer wall of the stator sleeve, a stator iron sheet is connected onto the inner wall of the connecting hole in a pluggable manner, an inner ring is connected onto the inner wall of the stator sleeve in a pluggable manner, and the stator iron sheet is inserted into the inner ring. A fixing groove is formed in the outer wall of the inner ring and located in one side of the connecting hole, and the connecting position of the fixing groove and the connecting hole is of a communicating structure. According to the utility model, the stator is divided into the stator sleeve and the stator iron sheet which are separately processed, then the stator iron sheet is screened, the next step of installation is carried out after the stator iron sheet is qualified, and the spliced stator can prevent large and small teeth from influencing the performance; the inner rings are fixed to the outer wall of the threaded rod through threads, the inner rings are sequentially installed in a threaded mode, the inner rings are driven by the threaded grooves to be mutually extruded, stacked and compacted, then stator iron sheets can be inserted for installation, the stator iron sheets are mutually extruded and compacted, and practicability is better.

Description

Technical Field

[0001] The utility model relates to the technical field of motor stators, in particular to a spliced motor stator iron core sheet. Background Art

[0002] The stator is the stationary component of an electric motor and consists of the stator core, stator windings, and frame. The stator's core function is to generate a rotating magnetic field, while the rotor, affected by the magnetic lines of force within this rotating field, generates and outputs current.

[0003] However, existing motor stator laminations have significant drawbacks, particularly when the stator laminations are integrally molded. If the large and small teeth of the laminations exceed the allowable tolerances, the stator and rotor tooth flux density distribution will be uneven, affecting the performance stability of the stator laminations. Furthermore, if the laminations have ripples, rust, oil stains, or dust on their surfaces, these issues will become apparent during press-fitting of the stator laminations, making it difficult to press the laminations together tightly, resulting in a reduced press-fit coefficient and, consequently, impacting the overall performance of the motor.

[0004] Therefore, a spliced motor stator lamination is needed to improve the above problems. Utility Model Content

[0005] In order to solve the problem that when the motor stator iron sheets are processed, the large and small teeth of the punching sheets exceed the allowable tolerance range, which will lead to uneven distribution of tooth magnetic density of the stator and rotor, and further affect the performance stability of the stator iron sheets, the utility model provides a spliced motor stator iron sheet to solve the above problem.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A spliced motor stator iron sheet comprises a stator sleeve, a connecting hole is provided on the outer wall of the stator sleeve, a stator iron sheet is plugged and connected to the inner wall of the connecting hole, an inner ring is plugged and connected to the inner wall of the stator sleeve, a fixing groove is provided on the outer wall of the inner ring, the fixing groove is located on one side of the connecting hole, the connection between the fixing groove and the connecting hole is a connecting structure, and the stator iron sheet is connected to the inner wall of the fixing groove, a threaded groove is provided on the inner wall of the inner ring, a threaded rod is threadedly connected to the inner wall of the threaded groove, and a connecting hole is provided on the outer wall of the threaded rod.

[0008] As a preferred solution of the present invention, the connection holes are provided in multiple groups and are respectively located on the outer wall of the stator sleeve, and the connection holes form a ring array structure.

[0009] As a preferred solution of the present invention, the stator iron sheets are provided in multiple groups and are respectively located on the inner wall of the connecting hole, and the cross section of the stator iron sheets is a T-shaped structure.

[0010] As a preferred solution of the present invention, the edges of the stator iron sheets are chamfered, and the inner rings are provided in multiple groups and are respectively located on the outer walls of the threaded rods.

[0011] As a preferred solution of the present invention, the inner ring is fixed to the outer wall of the threaded rod through a threaded groove, and the communicating hole is a through structure.

[0012] As a preferred solution of the present invention, the stator sleeve and the stator iron sheet are both made of silicon steel sheet material, and the stator sleeve is provided in multiple groups and is arranged on the outer wall of the inner ring from top to bottom.

[0013] As a preferred solution of the present invention, an arc-shaped chamfer is provided at the edge of the inner cavity of the connecting hole, and an arc-shaped chamfer is provided at the edge of the inner cavity of the fixing groove.

[0014] As a preferred solution of the present invention, the threaded rod is located in the inner cavity of the stator sleeve, the outer edge of the stator iron sheet is an arc-shaped structure, and the inner ring is located in the inner cavity of the stator sleeve.

[0015] Compared with the prior art, the utility model provides connecting holes and fixing slots in the spliced motor stator iron sheet. The stator iron sheet is inserted into the inner cavity of the connecting hole, and then the inner ring is inserted into the inner cavity of the stator sleeve for fixation. Then, a thrust is applied to the stator iron sheet, so that the stator iron sheet is inserted into the inner wall of the fixing slot for fixation. The stator is divided into the stator sleeve and the stator iron sheet for separate processing, and then the stator iron sheet is screened. After the stator iron sheet is qualified, the next step of installation is carried out. The spliced stator can prevent the large and small teeth from affecting the performance, thereby solving the problem that the large and small teeth of the punching sheet exceed the allowable tolerance range, which will cause uneven distribution of tooth magnetic flux of the stator and rotor, thereby affecting the performance stability of the stator iron sheet.

[0016] The utility model provides a thread groove in the spliced motor stator iron core sheet, fixes the inner ring thread on the outer wall of the threaded rod through the thread groove, and sequentially installs the inner ring through the thread. The inner ring is driven by the thread groove to squeeze and stack and compact each other, and then the stator iron sheet can be inserted for installation, thereby solving the problem of ripples, rust, oil or dust on the surface of the punching sheet, which will appear when the stator iron core sheet is pressed, making it difficult to press the iron core sheet tightly, resulting in a reduced press-fit coefficient, thereby affecting the overall performance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the stator iron sheet structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the stator sleeve structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the threaded rod structure of the present invention;

[0021] Figure 5 For the utility model Figure 4 A magnified schematic diagram of the A structure.

[0022] In the figure: 1. Stator sleeve; 2. Connecting hole; 3. Stator iron sheet; 4. Inner ring; 5. Fixing groove; 6. Threaded groove; 7. Threaded rod; 8. Connecting hole. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Example: See Figure 1-5 A spliced motor stator iron sheet shown includes a stator sleeve 1, a connecting hole 2 is provided on the outer wall of the stator sleeve 1, a stator iron sheet 3 is plugged and connected to the inner wall of the connecting hole 2, an inner ring 4 is plugged and connected to the inner wall of the stator sleeve 1, a fixing groove 5 is provided on the outer wall of the inner ring 4, the fixing groove 5 is located on one side of the connecting hole 2, wherein the connection between the fixing groove 5 and the connecting hole 2 is a connecting structure, and the stator iron sheet 3 is connected to the inner wall of the fixing groove 5, a threaded groove 6 is provided on the inner wall of the inner ring 4, a threaded rod 7 is threadedly connected to the inner wall of the threaded groove 6, and a connecting hole 8 is provided on the outer wall of the threaded rod 7.

[0025] In this embodiment, specific reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5, there are multiple groups of connecting holes 2 and they are respectively located on the outer wall of the stator sleeve 1, the connecting holes 2 are in an annular array structure, the stator iron sheets 3 are provided with multiple groups and are respectively located on the inner walls of the connecting holes 2, the cross section of the stator iron sheets 3 is a T-shaped structure, the edges of the stator iron sheets 3 are chamfered, the inner ring 4 is provided with multiple groups and is respectively located on the outer wall of the threaded rod 7, the inner ring 4 is fixed on the outer wall of the threaded rod 7 through the threaded groove 6, the communicating hole 8 is a through structure, the material of the stator sleeve 1 and the stator iron sheet 3 are both silicon steel sheet material, the stator sleeve 1 is provided with multiple groups and the stator sleeve 1 is arranged from top to bottom on the outer wall of the inner ring 4, the inner cavity edge of the connecting hole 2 is provided with an arc chamfer, the inner cavity edge of the fixing groove 5 is provided with an arc chamfer, the threaded rod 7 is located in the inner cavity of the stator sleeve 1, the outer edge of the stator iron sheet 3 is an arc structure, and the inner ring 4 is located in the inner cavity of the stator sleeve 1.

[0026] Among them, the inner edge of the connecting hole 2 is provided with an arc chamfer, the inner edge of the fixing groove 5 is provided with an arc chamfer, the threaded rod 7 is located in the inner cavity of the stator sleeve 1, and the outer edge of the stator iron sheet 3 is an arc-shaped structure, so that when the stator iron sheet 3 is inserted into the fixing groove 5 and the connecting hole 2, the edge of the arc structure makes it easier to insert the stator iron sheet 3;

[0027] When the spliced motor stator iron sheet of this scheme is working, the stator iron sheet 3 is first tested by opening a connection hole 2 on the outer wall of the stator sleeve 1, and the stator iron sheet 3 is plugged and connected on the inner wall of the connection hole 2. The stator iron sheet 3 that meets the requirements is inserted into the inner cavity of the connection hole 2, and then the inner ring 4 is plugged and connected on the inner wall of the stator sleeve 1. A fixing groove 5 is opened on the outer wall of the inner ring 4. The fixing groove 5 is located on one side of the connection hole 2, wherein the connection between the fixing groove 5 and the connection hole 2 is a connecting structure, and the stator iron sheet 3 is connected on the inner wall of the fixing groove 5. Under the action, when the inner ring 4 is inserted into the inner cavity of the stator sleeve 1 for fixation, a thrust is applied to the stator iron sheet 3, so that the stator iron sheet 3 is inserted into the inner wall of the fixing groove 5 for fixation, and the stator is divided into the stator sleeve 1 and the stator iron sheet 3 for separate processing, and then the stator iron sheet 3 is screened. After the stator iron sheet 3 is qualified, the next step of installation is carried out. The spliced stator can prevent the large and small teeth from affecting the performance, thereby solving the problem that the large and small teeth of the punching sheet exceed the allowable tolerance range, which will cause uneven distribution of the tooth magnetic density of the stator and rotor, and thus affect the performance stability of the stator iron sheet.

[0028] The inner ring 4 is inserted into the inner cavity of the stator sleeve 1 for fixation through the action of a threaded groove 6 opened on the inner wall of the inner ring 4, a threaded rod 7 is threadedly connected on the inner wall of the threaded groove 6, and a connecting hole 8 is opened on the outer wall of the threaded rod 7. Multiple groups are provided on the inner ring 4 and are respectively located on the outer walls of the threaded rod 7. The inner ring 4 is fixed on the outer wall of the threaded rod 7 through the threaded groove 6, and then the threaded groove 6 in the inner cavity of the inner ring 4 is threadedly fixed to the outer wall of the threaded rod 7. The inner ring 4 is threadedly installed in turn. The inner ring 4 is driven by the threaded groove 6 to squeeze and stack and compact each other, and then the stator iron sheet 3 can be inserted for installation, thereby solving the problem of corrugation, rust, oil or dust on the surface of the punching sheet. These problems will appear when the stator iron sheet is press-fitted, making it difficult for the iron sheet to be tightly pressed, resulting in a reduction in the press-fitting coefficient, thereby affecting the overall performance of the motor.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spliced motor stator core sheet, comprising a stator sleeve (1), characterized in that: A connecting hole (2) is provided on the outer wall of the stator sleeve (1), a stator iron sheet (3) is pluggably connected to the inner wall of the connecting hole (2), an inner ring (4) is pluggably connected to the inner wall of the stator sleeve (1), a fixing groove (5) is provided on the outer wall of the inner ring (4), the fixing groove (5) is located on one side of the connecting hole (2), wherein the connection between the fixing groove (5) and the connecting hole (2) is a connecting structure, and the stator iron sheet (3) is connected to the inner wall of the fixing groove (5), a threaded groove (6) is provided on the inner wall of the inner ring (4), a threaded rod (7) is threadedly connected to the inner wall of the threaded groove (6), and a connecting hole (8) is provided on the outer wall of the threaded rod (7).

2. The spliced motor stator core sheet according to claim 1, characterized in that: The connection holes (2) are provided in multiple groups and are respectively located on the outer wall of the stator sleeve (1), and the connection holes (2) form a ring array structure.

3. The spliced motor stator core sheet according to claim 1, characterized in that: The stator iron sheets (3) are provided in multiple groups and are respectively located on the inner wall of the connection hole (2); the cross section of the stator iron sheets (3) is a T-shaped structure.

4. The spliced motor stator core sheet according to claim 1, characterized in that: The edges of the stator iron sheets (3) are chamfered, and the inner rings (4) are provided in multiple groups and are respectively located on the outer walls of the threaded rods (7).

5. The spliced motor stator core sheet according to claim 1, characterized in that: The inner ring (4) is fixed to the outer wall of the threaded rod (7) through the threaded groove (6), and the connecting hole (8) is a through structure.

6. The spliced motor stator core sheet according to claim 1, characterized in that: The stator sleeve (1) and the stator iron sheet (3) are both made of silicon steel sheet material. The stator sleeve (1) is provided in multiple groups and the stator sleeves (1) are arranged on the outer wall of the inner ring (4) from top to bottom.

7. The spliced motor stator core sheet according to claim 1, characterized in that: An arc-shaped chamfer is provided at the inner cavity edge of the connecting hole (2), and an arc-shaped chamfer is provided at the inner cavity edge of the fixing groove (5).

8. The spliced motor stator core sheet according to claim 1, characterized in that: The threaded rod (7) is located in the inner cavity of the stator sleeve (1), the outer edge of the stator iron sheet (3) is an arc-shaped structure, and the inner ring (4) is located in the inner cavity of the stator sleeve (1).

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