Tooth section type motor iron core

Abstract

The invention discloses a tooth segment type motor iron core which comprises a stator punching sheet body, the stator punching sheet body comprises a strip-shaped yoke part and a plurality of tooth segment bodies, and the strip-shaped yoke part and the tooth segment bodies are located on one side of the stator punching sheet body. The plurality of tooth segment bodies are perpendicular to the strip-shaped yoke part and are uniformly distributed on one side of the stator punching sheet body; the stator punching sheet body is in a long strip shape, when the stator punching sheet body serves as a stator iron core of the outer rotor motor, the stator punching sheet body can be divided into two parts after being punched, the opposite sides of the stator punching sheet body are arranged in a staggered and symmetrical mode, and winding machining is carried out after the stator punching sheet body is punched. The tooth portion of the motor iron core is at least divided into two segments, the segmented punching sheets can be arranged on the long strip body in a staggered and symmetrical mode, the utilization rate of materials for manufacturing the iron core is greatly improved, the improvement amplitude can reach up to 20-40%, the motor iron core can be matched with a winding of a preformed structure for scientific combination, and the effect of the ultrahigh stator slot fullness rate is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to a motor iron core with segmented teeth. Background Art

[0002] At present, high-performance motor stators generally use integral original sheet punching, and then stack the punched sheets. At present, the utilization rate of the iron core material of this stator punching structure is low. In order to save materials, the prior art has developed a strip-shaped stator punching segment, and then the strip-shaped stator punching is wound and bent into a ring by a special device, and then the ring-shaped punched sheets are stacked to form a stator iron core; however, there are also certain limitations in the stator iron core stacked in this way. Due to the reason that the top of the iron core teeth is wider than the teeth, an interlaced symmetric arrangement structure cannot be formed, resulting in waste of some iron core body materials (these iron core wastes are commonly known as melon seeds in the motor industry). Therefore, a flat wire winding motor with better performance has emerged. However, due to the very complex winding process, huge investment, and high production cost of the traditional motor iron core structure if flat wire winding is used, it is very difficult to be accepted by business owners. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a motor iron core with segmented teeth, which solves the problems of waste of some iron core body materials in the manufacturing process of existing motors and the very complex process, huge investment, and high production cost of flat wire winding motors.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A motor iron core with segmented teeth, including a stator punching body, the stator punching body includes a strip-shaped yoke portion and a plurality of tooth portion segment bodies, the strip-shaped yoke portion and the plurality of tooth portion segment bodies are located on one side of the stator punching body, and the plurality of tooth portion segment bodies are evenly distributed perpendicular to the strip-shaped yoke portion on one side of the stator punching body;

[0005] The stator punching body is in a long strip shape. When the stator punching body is used as the stator iron core of an outer rotor motor, the stator punching body can be divided into two after stamping, and the opposite sides are in an interlaced symmetric arrangement. After the stator punching body is stamped, winding processing is carried out to form a semi-finished circular iron core with incomplete teeth.

[0006] Preferably, when the stator punching body can also be used as the stator iron core of an inner rotor motor, the stator punching body is in a long strip structure, and tooth portion segments are provided in the vertical direction of the stator punching body. The stator punching body can be divided into two after stamping, and the opposite sides are in an interlaced symmetric arrangement. After stamping, a plurality of independent tooth portion segment bodies are laminated, and form a complementary shape with the semi-finished circular iron core with incomplete teeth, and a complete motor iron core can be formed after combination.

[0007] Preferably, one end of several said tooth part segments has a mortise and tenon structure and forms a complete motor iron core with several independent tooth part segments having corresponding mortise and tenon structures.

[0008] Preferably, deformation joints are provided on several said tooth part segments and independent tooth part segments.

[0009] Beneficial effects

[0010] The present invention provides a tooth-segmented motor iron core, having the following beneficial effects:

[0011] 1. Since the tooth part of the motor iron core is at least divided into two sections and can be arranged in a staggered and symmetrical manner on the long strip body, the material utilization rate of manufacturing the iron core can be greatly improved, and the improvement amplitude can be as high as 20 - 40%.

[0012] 2. Since the tooth part of the iron core is a segmented combined structure, the manufacturing process of the motor winding becomes extremely simple. Especially for new windings such as flat wire windings or strip windings, they can be pre-formed and then combined with the tooth-segmented motor iron core to form a complete iron core assembly. Since the winding winding process is very simple and the dimensions of the flat wire winding or strip winding can perfectly match the tooth grooves of the iron core, the slot fill factor of the motor reaches the extreme, and the product cost performance can also reach the extreme. Description of the drawings

[0013] Figure 1 They are the general assembly drawings of the stator iron core of the outer rotor motor and the stator iron core of the inner rotor motor of the present invention.

[0014] Figure 2 They are the partial enlarged drawings of the stator iron core of the outer rotor motor and the partial enlarged drawings of the stator iron core of the inner rotor motor of the present invention.

[0015] Figure 3 It is a schematic structural diagram of the stator punching body (yoke side) of the present invention.

[0016] Figure 4 It is a schematic structural diagram of the stator punching body (tooth part side) of the present invention.

[0017] In the figure: 1. Stator punching body; 2. Strip yoke; 3. Tooth part segment; 4. Independent tooth part segment. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-4 , the present invention provides a technical solution: a tooth-segmented motor iron core, including a stator punching body 1, the stator punching body 1 includes a strip-shaped yoke portion 2 and a plurality of tooth portion segment bodies 3, the strip-shaped yoke portion 2 and the plurality of tooth portion segment bodies 3 are located on one side of the stator punching body 1, and the plurality of tooth portion segment bodies 3 are uniformly distributed on one side of the stator punching body 1 perpendicular to the strip-shaped yoke portion 2;

[0020] In this design, the number of stator punching bodies 1 is a pair, both are iron core punching bodies. One iron core punching body is a long strip structure, and tooth portion segments perpendicular to the yoke are arranged on one side of the long strip-shaped yoke. After the long strip body is punched, it can be divided into two, and the opposite sides are arranged in an interleaved and symmetrical arrangement. After the iron core punching body is punched, it is wound to form a semi-finished circular iron core with incomplete teeth; the other iron core punching body is also a long strip structure, and tooth portion paragraphs arranged in an interleaved and symmetrical distribution are provided on the vertical plane of the long strip body. After punching, they are stacked to form corresponding tooth portion segment bodies, and form a complementary structure with the semi-finished circular iron core with incomplete teeth, so as to form a complete motor iron core.

[0021] The stator punching body 1 is in a long strip shape. When the stator punching body 1 is used as the stator iron core of an outer rotor motor, the stator punching body 1 can be divided into two after punching, and the opposite sides are arranged in an interleaved and symmetrical arrangement. After the stator punching body 1 is punched, winding processing is carried out to form a semi-finished circular iron core with incomplete teeth.

[0022] Furthermore, when the stator punching body 1 is used as the stator iron core of an inner rotor motor, the stator punching body 1 is in a long strip structure, tooth portion segments are arranged in the vertical direction of the stator punching body 1, the stator punching body 1 can be divided into two after punching, and the opposite sides are arranged in an interleaved and symmetrical arrangement. After punching, they are stacked to form a plurality of independent tooth portion segment bodies 4, and form a complementary shape with the semi-finished circular iron core with incomplete teeth. After combination, a complete motor iron core can be formed.

[0023] Furthermore, one end of the plurality of tooth portion segment bodies 3 has a mortise and tenon structure and is combined with a plurality of independent tooth portion segment bodies 4 with corresponding mortise and tenon structures to form a complete motor iron core; the combination method of the independent tooth portion segments with corresponding mortise and tenon structures and the semi-finished iron core is the radial insertion method, and then a complete motor iron core is formed.

[0024] Furthermore, deformation seams are provided on both the plurality of tooth portion segment bodies 3 and the independent tooth portion segment bodies 4.

[0025] Through those skilled in the art, the components in this case are connected in sequence. For the specific connection and operation sequence, reference should be made to the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process.

[0026] Embodiment: The stator punching body 1 is a strip-shaped iron core punching. The strip-shaped iron core punching includes a strip-shaped yoke portion 2 and tooth portion segments 3 that are vertically and evenly distributed along one side of the strip-shaped yoke portion 2, and form a complete motor iron core with another corresponding tooth portion segment. First, the strip-shaped iron core punching body has a strip structure. Tooth portion segments 3 perpendicular to the yoke portion are provided on one side of the strip-shaped yoke portion 2. After being molded, the strip-shaped iron core punching can be divided into two, and the opposite sides are arranged in an alternating and symmetrical pattern. After the strip-shaped iron core punching is completed, it is wound to form a semi-finished circular iron core with incomplete teeth. Second, another strip-shaped iron core punching is also required. Tooth portion paragraphs are provided on the vertical plane of the strip-shaped iron core punching in an alternating and symmetrical distribution. After being punched, they are stacked to form corresponding tooth portion segments, and form a complementary structure with the semi-finished circular iron core with incomplete teeth, thereby forming a complete motor iron core.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising said element.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can 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 tooth-segmented motor iron core, comprising a stator punching body (1), the stator punching body (1) including a strip-shaped yoke portion (2) and a plurality of tooth portion segment bodies (3), characterized in that, The strip-shaped yoke portion (2) and several tooth portion segments (3) are located on one side of the stator punching body (1), and several of the tooth portion segments (3) are evenly distributed perpendicular to the strip-shaped yoke portion (2) on one side of the stator punching body (1); The stator punching body (1) is long strip-shaped. When the stator punching body (1) is used as the stator core of an outer-rotor motor, the stator punching body (1) can be divided into two parts after stamping, and the opposite sides are arranged in an interlaced and symmetrical pattern. After the stator punching body (1) is stamped, winding processing is carried out to form a semi-finished circular iron core with incomplete teeth.

2. The segmented tooth motor core according to claim 1, wherein, When the stator punching body (1) is used as the stator core of an inner-rotor motor, the stator punching body (1) has a long strip structure. Tooth portion segments are provided in the vertical direction of the stator punching body (1). The stator punching body (1) can be divided into two parts after stamping, and the opposite sides are arranged in an interlaced and symmetrical pattern. After stamping, several independent tooth portion segments (4) are formed by stacking, and they form a complementary pattern with the semi-finished circular iron core with incomplete teeth. After combination, a complete motor iron core can be formed.

3. The segmented tooth type motor iron core according to claim 2, wherein, One end of several of the tooth portion segments (3) has a mortise and tenon structure and is combined with several independent tooth portion segments (4) with corresponding mortise and tenon structures to form a complete motor iron core.

4. The segmented tooth motor core according to claim 2, wherein Deformation joints are provided on several of the tooth portion segments (3) and the independent tooth portion segments (4).

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