Motor stator and motor

Abstract

The invention relates to a motor stator and a motor. The motor stator comprises: a housing having a cavity and an opening leading to the cavity; the stator core is provided with a winding coil and is arranged in the cavity; a separation plate arranged to close the opening; the sealing piece is arranged between the isolation plate and the inner wall of the shell, the isolation plate is provided with a first extension part, the first extension part is arranged to extend towards the interior of the cavity in the longitudinal axis direction of the motor stator and is provided with a first side and a second side which are opposite, and the first side and the second side are arranged to be opposite to each other. The first side and the second side abut against the sealing piece and the stator core respectively. The reliability and durability of the motor stator can be effectively improved, and the working performance of the motor is enhanced.

Description

Technical Field

[0001] The present invention relates to the field of electromechanical equipment, in particular to a motor stator and a motor. Background Art

[0002] Various types of motor equipment such as hub motors and generators have been widely used in many fields to achieve the conversion or transmission between electrical energy and mechanical energy. These motor equipment are usually equipped with stator cores, winding coils, rotors and other components, which will work and operate according to the law of electromagnetic induction.

[0003] exist Figure 1 1 shows an existing motor stator structure, which comprises a housing 1, a stator core 2 is mounted inside the housing 1, an insulating wire frame 4 is mounted outside the stator core 1, and a winding coil 3 is wound on the insulating wire frame 4. In addition, an isolation plate 5 and a sealing ring 6 are mounted at the end of the housing 1, which are used to seal the motor stator.

[0004] In order to facilitate installation and operation, the industry is accustomed to Figure 1 As shown, the winding coil 3 is extended to the bottom of the stator core 1 and the insulating wire frame 2. However, the present application has found that the above design has defects. For example, when the motor stator works under a certain temperature environment (for example, a high temperature above 100°C), the isolation plate may be deformed outward, which will cause the gap between the isolation plate and the rotor to become smaller, and finally cause friction interference between the isolation plate and the rotor, and even cause the rotor to get stuck.

[0005] It should be pointed out that the above contents are described in this section only for the purpose of enabling a more complete understanding of the present invention, and therefore these descriptions or understandings should not be regarded as already belonging to the prior art. Summary of the invention

[0006] In view of this, the present invention provides a motor stator and a motor, so as to solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art, or provide an alternative technical solution for the prior art.

[0007] According to one aspect of the present invention, a motor stator is first provided, comprising:

[0008] a housing having a cavity and an opening leading to the cavity;

[0009] a stator core with winding coils disposed in the cavity;

[0010] a partition plate arranged to close the opening; and

[0011] a seal disposed between the isolation plate and the inner wall of the housing,

[0012] The isolation plate has a first extension portion, which is arranged to extend toward the inside of the cavity along the longitudinal axis direction of the motor stator and has a first side and a second side opposite to each other, and the first side and the second side are respectively abutted against the seal and the stator core.

[0013] In the motor stator according to the present invention, optionally, the stator core has a tooth portion extending along the longitudinal axis direction, the winding coil is wound on the tooth portion, and the second side abuts against a portion of the tooth portion where the winding coil is not wound.

[0014] In the motor stator according to the present invention, optionally, the isolation plate further has a recessed portion, the recessed portion is disposed adjacent to the first extension portion, and an end portion of the tooth portion is accommodated in the recessed portion and abuts against the second side and an upper surface of the recessed portion.

[0015] In the motor stator according to the present invention, optionally, the motor stator further comprises an insulating bobbin, wherein the insulating bobbin is installed between the stator core and the winding coil.

[0016] In the motor stator according to the present invention, optionally, the isolation plate also has a second extension portion, which is connected to the first extension portion and extends outward along the lateral direction of the stator core, and the outer surface of the second extension portion facing the inner side of the cavity abuts against the insulating wire frame, and the end of the second extension portion abuts against the inner wall of the shell.

[0017] In the motor stator according to the present invention, optionally, the sealing member is arranged in a space defined by the second extension portion and the inner wall of the housing, and the sealing member includes an elastic sealing ring.

[0018] In the motor stator according to the present invention, optionally, the isolation plate also has a recess, which is arranged adjacent to the first extension portion, and a protrusion is arranged on the outer surface of the recess, and the protrusion extends toward the inside of the cavity along the longitudinal axis direction of the motor stator and abuts against the insulating wire frame.

[0019] In the motor stator according to the present invention, optionally, a height of the protrusion is not greater than a height of the first extension portion.

[0020] In the motor stator according to the present invention, optionally, the isolation plate is configured to have a symmetrical structure relative to a longitudinal axis of the motor stator, and / or the isolation plate is made of insulating material.

[0021] Secondly, according to another aspect of the present invention, there is also provided a motor, comprising:

[0022] A motor stator as described in any one of the above items; and

[0023] The rotor is arranged to rotate relative to the motor stator after the winding coil of the motor stator is energized to generate electromagnetic induction.

[0024] The present invention has the advantages of simple and compact structure, easy manufacture, assembly and maintenance, etc., and can especially enhance the supporting force of the isolation plate in the motor stator, improve its anti-deformation ability and sealing performance after being heated, significantly improve product reliability and durability, and effectively avoid problems such as friction or jamming of the motor rotor. The motor stator and the motor of the present invention have good working performance and outstanding practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic diagram of a partial cross-sectional structure of an existing motor stator.

[0026] Figure 2 The figure is a partial cross-sectional structural schematic diagram of a motor stator embodiment according to the present invention. DETAILED DESCRIPTION

[0027] First of all, it should be noted that, in this article, the technical terms "first" and "second" are only used for distinguishing purposes and are not intended to indicate their order and relative importance. The technical term "connection" means that a specific component is directly connected to another component and / or indirectly connected to another component. In addition, for any single technical feature described or implied in the embodiments mentioned in this article, or any single technical feature displayed or implied in the drawings, the present invention still allows these technical features (or their equivalents) to be combined or deleted at will without any technical obstacles, so it should be considered that more embodiments of this type are also within the scope of this article.

[0028] refer to Figure 2 In this figure, a partial cross-sectional structure of an embodiment of a motor stator according to the present invention is exemplarily shown, in which a housing 10, a stator core 20, a winding coil 30, an insulating bobbin 40, an isolation plate 50 and a seal 60 can be configured.

[0029] In the motor stator 100, the housing 10 is provided with a cavity 11 for placing components such as the stator core 20, the winding coil 30, the insulating wire frame 40, etc. Figure 2 As shown, these components can be arranged in the cavity 11 through the opening 12 on the housing 10. As for the stator core 20, it can be made of suitable materials such as cast iron and any feasible process such as stacking selenium-embedded steel sheets. Figure 2In the example, an insulating bobbin 40 is installed outside the stator core 20, and then the winding coil 30 is arranged around the insulating bobbin 40. It should be noted that in one or some embodiments, the insulating bobbin 40 is allowed to be removed, that is, the winding coil 30 can be directly arranged around the stator core 20.

[0030] In different applications, the stator core 20 can be configured to have appropriate teeth 21 as required, so that the winding coils 30 can be wound around these teeth 21. Figure 2 As shown, the tooth portion 21 can extend along the longitudinal axis L of the motor stator 100, and the winding coil 30 can be wound at a suitable position on the tooth portion 21 as required. For the winding coil 30, its specific selected wire material, number of winding layers, winding method, etc. can be flexibly configured or adjusted according to actual needs, and the present invention does not impose any restrictions on this.

[0031] In the motor stator 100, the isolation plate 50 and the sealing member 60 are used to provide sealing protection and other functions for the motor stator. The isolation plate 50 is arranged at the opening 12 of the housing 10 to completely or partially close the opening, and it can be made of insulating material, such as plastic. The sealing member 60 is arranged between the isolation plate 50 and the inner wall of the housing 10 to further seal the joint position thereof. Generally, the sealing member 60 can be an elastic sealing ring made of an elastic material (such as rubber, etc.), such as an O-ring, etc.

[0032] In order to enhance the support force of the isolation plate 50, it can be constructed to have a first extension portion 51 and a second extension portion 52. The first extension portion 51 extends toward the inside of the cavity along the longitudinal axis L of the motor stator, and the second extension portion 52 is connected to the first extension portion 51 and extends outward along the transverse direction of the stator core 20 (i.e., a direction perpendicular to the longitudinal axis L). Figure 2 As shown, the first extension portion 51 has a first side 511 and a second side 512 opposite to each other. When the isolation plate 50 is installed in place on the shell 10, the isolation plate 50 will abut against the seal 60 through the first side 511 of the first extension portion 51. At this time, the seal 60 is located in the space defined by the second extension portion 52 and the inner wall of the shell 10. The abutting contact between the isolation plate 50 and the seal 60 can provide support force for the isolation plate 50 from the first side 51; at the same time, the isolation plate 50 can also abut against the stator core 20 through the second side 512 of the first extension portion 51, for example, so that it abuts against the part of the tooth portion 21 where the winding coil 30 is not wound, so as to further obtain the support force located at the second side 512, thereby significantly enhancing the support force for the isolation plate as a whole, improving its anti-deformation ability and sealing performance, etc.

[0033] As an optional situation, the structure and installation arrangement of the isolation plate 50 can be optimized to further enhance its supporting effect. For example, the second extension portion 52 can be further arranged so that its outer surface 521 facing the inside of the cavity abuts against the insulating wire frame 40, and the end of the second extension portion 52 abuts against the inner wall of the housing 10. Figure 2 Thus, the support force of the isolation plate can be further improved through the additional abutment contact between the isolation plate 50 and the insulating wire frame 40 and the housing 10 .

[0034] For another example, a recess 53 may be provided on the isolation plate 50, for example Figure 2 As shown, it can be optionally arranged at a position adjacent to the first extension portion 51. The end of the tooth portion 21 of the stator core 20 can be accommodated in the recess 53, so that after the isolation plate 50 is installed in place, the upper surface of the recess 53 can form an abutment with the tooth portion 21, so that the support function of the isolation plate can be strengthened. The specific size, structural shape, layout and other aspects of the recess 53 can be designed according to application requirements.

[0035] For another example, it is also possible to consider providing a protrusion 54 on the outer surface of the recess 53 to further enhance the supporting effect on the isolation plate. Figure 2 As shown, the protrusion 54 can be configured to extend toward the inside of the cavity 11 along the longitudinal axis L of the motor stator, so that after the isolation plate 50 is installed in place, the protrusion 54 can form an abutment with the insulating wire frame 40, and the insulating wire frame 40 forms additional support for the isolation plate 50 at this position. As an optional situation, the protrusion 54 can be set to have a height not greater than the height of the first extension portion 51. Regarding their specific height design, specific structural shape, arrangement, etc. of the protrusion, the present invention allows for setting as needed without limitation.

[0036] The motor stator of the present invention has obvious advantages over the prior art. This is because, for example, Figure 1When assembling the isolation plate of these existing motor stator products shown, it is generally customary in the art to form an interference fit between the isolation plate and the stator housing and the sealing ring, while maintaining a clearance fit with the winding coil. However, after research, the present application has found that the use of the above method will result in a lack of support force provided to the isolation plate, especially when it is heated, which may easily cause the isolation plate to deform inward, and may further interfere with the operation of the rotor and other parts, causing adverse effects such as stalling. In contrast, the motor stator structure proposed by the present invention can optimize and change the matching relationship between the isolation plate and the stator core, insulating wire frame and other parts through the above multiple ways, thereby significantly enhancing the support force of the isolation plate, making it less likely to deform even after being heated, and also enhancing the sealing performance, so that the safety, reliability, durability and other aspects of the product are significantly improved, and the overall performance is improved.

[0037] It should be pointed out that although Figure 2 In the figure, the isolation plate 50 is shown as a symmetrical structure relative to the longitudinal axis L of the motor stator. However, in some embodiments, the isolation plate 50 may be configured to not form a symmetrical structure relative to the longitudinal axis L according to the present invention.

[0038] Furthermore, the present invention also provides a motor. The motor stator provided by the design of the present invention can be configured in the motor, and the rotor can be configured in the motor. When the winding coil of the motor stator is energized, an electromagnetic field will be generated to form an electromagnetic induction effect, thereby causing the rotor to rotate relative to the stator, so that the motor outputs power outward. It should be understood that the motor according to the present invention can have various types and can be widely used in many fields, thereby bringing the advantages mentioned above such as safety, reliability, durability, sealing performance, etc. that are significantly better than existing products. For example, the motor of the present invention includes a hub motor, and such a hub motor can be applied to many possible occasions such as various types of electric power-assisted vehicles.

Claims

1. A motor stator (100), comprising: A housing (10) having a cavity (11) and an opening (12) leading to the cavity (11); A stator core (20) with a winding coil (30) arranged in the cavity (11); a partition plate (50) arranged to close the opening (12); and a sealing member (60) disposed between the isolation plate (50) and the inner wall of the housing (10), It is characterized in that the isolation plate (50) has a first extension portion (51), the first extension portion (51) is arranged to extend toward the inside of the cavity (11) along the longitudinal axis (L) of the motor stator (100), and has a first side (511) and a second side (512) opposite to each other, the first side (511) and the second side (512) respectively abutting against the seal (60) and the stator core (20).

2. The motor stator (100) according to claim 1, wherein: The stator core (20) has a tooth portion (21) extending along the longitudinal axis (L), the winding coil (30) is wound on the tooth portion (21), and the second side (512) abuts against a portion of the tooth portion (21) on which the winding coil (30) is not wound.

3. The motor stator (100) according to claim 2, wherein: The isolation plate (50) further comprises a recess (53) which is arranged adjacent to the first extension portion (51), wherein the end of the tooth portion (21) is received in the recess (53) and abuts against the second side (512) and the upper surface of the recess (53).

4. The motor stator (100) according to claim 1, wherein: The motor stator (100) further comprises an insulating bobbin (40), wherein the insulating bobbin (40) is installed between the stator core (20) and the winding coil (30).

5. The motor stator (100) according to claim 4, wherein: The isolation plate (50) also has a second extension portion (52), which is connected to the first extension portion (51) and extends outward along the transverse direction of the stator core (20), and the outer surface (521) of the second extension portion (52) facing the inside of the cavity (11) abuts against the insulating wire frame (40), and the end of the second extension portion (52) abuts against the inner wall of the shell (10).

6. The motor stator (100) according to claim 5, wherein: The sealing member (60) is arranged in a space defined by the second extension portion (52) and the inner wall of the housing (10), and the sealing member (60) comprises an elastic sealing ring.

7. The motor stator (100) according to claim 4, wherein: The isolation plate (50) also has a recess (53), which is arranged adjacent to the first extension portion (51), and a protrusion (54) is arranged on the outer surface of the recess (53), and the protrusion (54) extends toward the inside of the cavity (11) along the longitudinal axis (L) of the motor stator (100) and abuts against the insulating wire frame (40).

8. The motor stator (100) according to claim 7, wherein: The height of the protruding portion (54) is not greater than the height of the first extending portion (51).

9. The motor stator (100) according to any one of claims 1 to 8, wherein: The isolation plate (50) is configured to have a symmetrical structure relative to a longitudinal axis (L) of the motor stator (100), and / or the isolation plate (50) is made of insulating material.

10. A motor, characterized in that: include: The motor stator (100) according to any one of claims 1 to 9; as well as A rotor is arranged to rotate relative to the motor stator (100) after the winding coil (30) of the motor stator (100) is energized to generate electromagnetic induction.

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