A high-efficiency lightweight stator structure

Abstract

A high-efficiency lightweight stator structure includes a tubular housing. Inside the tubular housing, there are at least a pair of magnetic poles, and there are gaps between adjacent magnetic poles. An irregular magnetic conductive ring is provided outside the tubular housing, and the number and position of the irregular magnetic conductive rings are set in one-to-one correspondence with the intervals. The magnetic poles are arranged in a shape-fitting manner with the inner wall of the tubular housing, and the irregular magnetic conductive rings are all arranged in a shape-fitting manner with the outer wall of the tubular housing. An end cover is provided on one axial side of the tubular housing, and the end cover and the irregular magnetic conductive ring are an integral body. The high-efficiency lightweight stator designed by the present invention, through the optimized design of the irregular magnetic conductive ring, according to the magnetic circuit requirements of the motor stator, only thickens the magnetic circuit of the parts with high magnetic conductivity requirements in the stator, and thins all other parts with low magnetic conductivity requirements, thereby realizing the reduction of the overall weight of the stator without reducing the magnetic conductivity performance of the stator; the design of the end cover structure also makes its weight lighter, not only can achieve lightweight design, but also has high installation efficiency and does not affect the performance.

Description

Technical Field

[0001] The invention belongs to the technical field of stator structure improvement, and particularly relates to a high-efficiency and lightweight stator structure. Background Art

[0002] The stator is the stationary part of the motor, and its main function is to provide a constant permanent magnetic field for the motor. As one of the main components of the motor, the weight of the stator directly affects the weight of the entire motor. Currently, there is an increasing trend in the lightweight design of motors. However, in order not to affect the performance of the motor, there are few improvements to the structure of the stator assembly to achieve lightweight design. Although the traditional stator structure is stable, it is very heavy, which is not conducive to the lightweight of the entire motor. Therefore, through the analysis of the stator structure and its magnetic conductivity and other properties, we have designed a stator structure that can not only ensure performance but also achieve lightweight.

[0003] It should be noted that the above introduction of the technical background is only for the convenience of clearly and completely explaining the technical solution of the present invention and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art section of the present invention. Summary of the Invention

[0004] To overcome the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a high-efficiency and lightweight stator structure.

[0005] To achieve the above purpose and other related purposes, the technical solution provided by the present invention is: a high-efficiency and lightweight stator structure, including a tubular housing, at least a pair of magnetic poles are arranged inside the tubular housing, and a gap is arranged between adjacent magnetic poles; an irregular magnetic conductive ring is arranged outside the tubular housing, and the number and position of the irregular magnetic conductive rings are arranged in one-to-one correspondence with the gaps; the magnetic poles are arranged in a shape-fitting manner with the inner wall of the tubular housing, the irregular magnetic conductive rings are all arranged in a shape-fitting manner with the outer wall of the tubular housing, and an end cover is arranged on one axial side of the tubular housing, and the end cover and the irregular magnetic conductive ring are an integral body.

[0006] The preferred technical solution is: the magnetic poles include a first magnetic steel and a second magnetic steel arranged opposite to each other, a first gap and a second gap are arranged between the first magnetic steel and the second magnetic steel, and a first magnetic conductive ring and a second magnetic conductive ring corresponding to the first gap and the second gap respectively are arranged outside the tubular housing.

[0007] The preferred technical solution is: both ends of the end cover straddle the ends of the tubular housing, and are respectively arranged in an up-and-down correspondence with the first gap and the second gap.

[0008] The preferred technical solution is that the first magnetic conduction ring and the second magnetic conduction ring are respectively located at both ends of the end cover and integrally formed with the end cover.

[0009] The preferred technical solution is that four through holes are provided on the tubular casing; the through holes are all located below the magnetic poles, and the four through holes respectively correspond to the lower left corner of the first magnetic conduction ring, the lower right corner of the first magnetic conduction ring, the lower left corner of the second magnetic conduction ring, and the lower right corner of the second magnetic conduction ring.

[0010] The preferred technical solution is that a plurality of riveting buckles are provided at the other axial end of the tubular casing, and the riveting buckles are integrally provided with the tubular casing.

[0011] The preferred technical solution is that the connections between the end cover and the first magnetic conduction ring and the second magnetic conduction ring are detachably embedded in the tubular casing.

[0012] The preferred technical solution is that two mounting feet bent outward are provided on both the first magnetic conduction ring and the second magnetic conduction ring.

[0013] The preferred technical solution is that both side surfaces of the end cover are trapezoidal cross-sections.

[0014] The preferred technical solution is that a hollow structure is provided on the body of the end cover.

[0015] Due to the application of the above technical solutions, the advantages of the present invention compared with the prior art are:

[0016] The high-efficiency and lightweight stator designed by the present invention, through the design of the preferred special-shaped magnetic conduction ring, according to the magnetic circuit requirements of the motor stator, only thickens the magnetic circuit at the parts with high magnetic conduction requirements in the stator, and thins all other parts with low magnetic conduction requirements, thereby realizing the reduction of the overall weight of the stator without reducing the magnetic conduction performance of the stator; the design of the end cover structure can also make its weight lighter; this structure can not only achieve lightweight design, but also has high installation efficiency and does not affect performance, and has strong practicability and is suitable for popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall schematic diagram of the present invention Figure 1 .

[0018] Figure 2 is the overall schematic diagram of the present invention Figure 2 .

[0019] Figure 3 is the top view schematic diagram of the present invention.

[0020] Figure 4 is the installation schematic diagram of the tubular casing and the magnetic poles.

[0021] In the above figures, there are a tubular casing 1, a first magnetic steel 2, a second magnetic steel 3, an end cap 4, a first magnetic conductive ring 5, a second magnetic conductive ring 6, a through hole 7, a riveting buckle 8, a mounting foot 9, a first gap 10, and a second gap 11. Specific Embodiment

[0022] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0023] Please refer to Figures 1 to 4 . It should be noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] Embodiment: As Figure 1 and 4As shown in the figure, a high-efficiency lightweight stator structure includes a tubular housing 1. Inside the tubular housing 1, at least a pair of magnetic poles are provided, and there are gaps between adjacent magnetic poles. An irregular magnetic conduction ring is provided outside the tubular housing 1, and the number and position of the irregular magnetic conduction rings are set in one-to-one correspondence with the gaps. The magnetic poles are arranged in a shape-fitting manner with the inner wall of the tubular housing 1, and the irregular magnetic conduction rings are all arranged in a shape-fitting manner with the outer wall of the tubular housing. At one axial side of the tubular housing 1, an end cover 4 is provided, and the end cover 4 and the irregular magnetic conduction ring are an integral body. The magnetic pole includes a first magnetic steel 2 and a second magnetic steel 3 arranged oppositely. A first gap 10 and a second gap 11 are provided between the first magnetic steel 2 and the second magnetic steel 3. First magnetic conduction rings 5 and second magnetic conduction rings 6 corresponding to the first gap 10 and the second gap 11 respectively are provided outside the tubular housing 1. Both ends of the end cover 4 straddle the ends of the tubular housing 1 and are respectively arranged corresponding to the upper and lower parts of the first gap 10 and the second gap 11. Four through holes 7 are provided on the tubular housing 1; the through holes 7 are all located below the magnetic poles, and the four through holes 7 are respectively arranged corresponding to the lower left corner, the lower right corner of the first magnetic conduction ring 5, the lower left corner, and the lower right corner of the second magnetic conduction ring 6. The connection parts of the end cover 4 with the first magnetic conduction ring 5 and the second magnetic conduction ring 6 are detachably embedded in the tubular housing 1.

[0026] The preferred embodiment is: As shown in Figure 1 and 2 As shown in the figure, two mounting feet 9 bent outward are provided on both the first magnetic conduction ring 5 and the second magnetic conduction ring 6. They are used to fix the motor and the flange.

[0027] The preferred embodiment is: As shown in Figure 1 and 2 As shown in the figure, several riveting buckles 8 are provided at the other axial end of the tubular housing 1, and the riveting buckles 8 are integrally provided with the tubular housing 1. They are used for riveting with the rear end cover of the motor.

[0028] The preferred embodiment is: As shown in Figure 1 and 2 As shown in the figure, the first magnetic conduction ring 5 and the second magnetic conduction ring 6 are respectively located at both ends of the end cover 4 and are integrally formed with the end cover 4. Both ends of the end cover 4 are respectively connected to the first magnetic conduction ring 5 and the second magnetic conduction ring 6. It is equivalent to that the first magnetic conduction ring 5 and the second magnetic conduction ring 6 extend from both sides of the end cover 4 and are integrally arranged, with high installation efficiency and accurate positioning.

[0029] The preferred embodiment is: As shown in Figure 1 and 2 As shown in the figure, both side surfaces of the end cover 4 are trapezoidal cross-sections. Both sides of the end cover 4 are cut off, and only the middle section straddles the tubular housing 1. The weight of the end cover 4 can be made lighter.

[0030] The preferred embodiment is: As shown in Figure 1 and 2As shown, a hollow structure is provided on the body of the end cover 4, which can reduce the overall weight of the stator.

[0031] Principle: As Figures 1 to 4 shown, the magnetic poles are divided into two magnetic steel structures and arranged in the housing. The magnetic-conducting housing of the stator thickens only the places with high requirements according to the magnetic circuit requirements, that is, the places of the first magnetic-conducting ring 5 and the second magnetic-conducting ring 6. The two magnetic-conducting rings are equivalent to thickening the housing, and the other places irrelevant to magnetic conduction can be made relatively thinner to reduce the overall weight; the end cover 4 is not used as the whole cover, but only a middle section is left to straddle the housing, and the weight of the end cover 4 can also be made lighter; both ends of the end cover 4 are respectively connected to the two side magnetic-conducting rings, which is equivalent to that the magnetic-conducting rings extend from the end cover 4, with stable structure and convenient installation and positioning; such a structure does not affect the performance and can also reduce the overall weight, obtaining a lightweight and high-performance stator assembly.

[0032] The high-efficiency and lightweight stator designed by the present invention, through the design of the preferred special-shaped magnetic-conducting ring, thickens the magnetic circuit only at the parts with high magnetic-conduction requirements in the stator according to the magnetic circuit requirements of the motor stator, and thins all the other places with low magnetic-conduction requirements, thereby reducing the overall weight of the stator without reducing the magnetic-conduction performance of the stator; the design of the end cover structure can also make its weight lighter; this structure can not only achieve lightweight design, but also has high installation efficiency and does not affect the performance, with strong practicability and is suitable for popularization.

[0033] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A high-efficiency lightweight stator structure, characterized in that: It includes a tubular housing, inside which there are at least a pair of magnetic poles, and there are gaps between adjacent magnetic poles; outside the tubular housing, there is a special-shaped magnetic conductive ring, and the number and position of the special-shaped magnetic conductive rings are arranged in one-to-one correspondence with the gaps; the magnetic poles are arranged in a shape-fitting manner with the inner wall of the tubular housing, and the special-shaped magnetic conductive rings are all arranged in a shape-fitting manner with the outer wall of the tubular housing. At one axial side of the tubular housing, there is an end cover. The magnetic poles include a first magnetic steel and a second magnetic steel arranged oppositely, and there are a first gap and a second gap between the first magnetic steel and the second magnetic steel. Outside the tubular housing, there are a first magnetic conductive ring and a second magnetic conductive ring corresponding to the first gap and the second gap respectively, and the first magnetic conductive ring and the second magnetic conductive ring are separately arranged on the outer peripheral surface of the tubular housing; both ends of the end cover straddle the ends of the tubular housing and are respectively arranged in an up-and-down corresponding manner with the first gap and the second gap, and the first magnetic conductive ring and the second magnetic conductive ring are respectively located at both ends of the end cover and are integrally formed with the end cover.

2. The high-efficiency lightweight stator structure according to claim 1, characterized in that: Four through holes are provided on the tubular housing; the through holes are all located below the magnetic poles, and the four through holes are respectively arranged corresponding to the lower left corner of the first magnetic conductive ring, the lower right corner of the first magnetic conductive ring, the lower left corner of the second magnetic conductive ring, and the lower right corner of the second magnetic conductive ring.

3. The high-efficiency lightweight stator structure according to claim 2, characterized in that: At the other axial end of the tubular housing, there are a number of riveting buckles, and the riveting buckles are integrally arranged with the tubular housing.

4. The high-efficiency lightweight stator structure according to claim 3, wherein: The connections between the end cover and the first magnetic conductive ring and the second magnetic conductive ring are detachably embedded in the tubular housing.

5. The high-efficiency lightweight stator structure according to claim 4, characterized in that: Two mounting feet bent outward are provided on both the first magnetic conductive ring and the second magnetic conductive ring.

6. The high-efficiency and lightweight stator structure according to claim 5, characterized in that: Both side surfaces of the end cover are trapezoidal cross-sections.

7. The high-efficiency lightweight stator structure according to claim 6, characterized in that: A hollow structure is provided on the body of the end cover.

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