Solderless riveted structure stator core

Abstract

The application relates to the technical field of stator cores, in particular to a stator core with a non-welding riveting structure, which comprises core plates, the two ends of each core plate are provided with pressing rings, the pressing rings and the core plates are fixedly connected through clamping mechanisms between the two ends, strip-shaped grooves are arranged on the outer walls of the core plates, adjusting mechanisms are arranged in the strip-shaped grooves, tooth blocks are arranged on the inner walls of the shaft centers of the core plates, and tooth grooves are arranged on the two sides of each core plate. The clamping mechanisms and the adjusting mechanisms are arranged, the device can fix a plurality of core plates in a clamping mode, the overall structural stability of the core can be improved, the spacing of the clamping can be adjusted through cooperation with the adjusting mechanisms, and the device can synchronously adjust the number of stacked core plates according to requirements when clamping.

Description

Technical Field

[0001] This invention relates to the field of stator core technology, specifically to a stator core with a weld-free riveting structure. Background Technology

[0002] The stator core is an important component of the motor's magnetic circuit. Together with the rotor core and the air gap between the stator and rotor, it forms the complete magnetic circuit of the motor. In asynchronous motors, the magnetic flux in the stator core is alternating, which results in core losses.

[0003] As disclosed in the authorization announcement CN108233560B, the stator core and motor have achieved the following: the first core part is formed by stacking multiple first laminations along the axial direction of the stator core or by processing them with a first magnetic material; the second core part is formed by stacking second laminations along the direction perpendicular to the axial direction of the stator core or by processing them with a second magnetic material. Through the effect of the staggered stacking of the first and second laminations, the magnetic permeability of the stator core is effectively improved. However, it does not solve the problem that the existing stator cores are unstable due to the fixing by welding and riveting. Therefore, we propose a stator core with or without welding and riveting structure. Summary of the Invention

[0004] The purpose of this invention is to provide a stator core with a weld-free riveting structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A stator core with a weld-free riveted structure, the stator core comprising:

[0007] A core board, wherein pressure rings are provided at both ends of the core board, and the pressure rings at both ends are fixedly connected to the core board by a clamping mechanism;

[0008] A strip groove is formed on the outer wall of the core board, and an adjustment mechanism is provided inside the strip groove;

[0009] The toothed block is disposed on the inner wall of the core plate at the axis, and the core plate has toothed grooves on both sides of the toothed block.

[0010] Preferably, the adjusting mechanism includes a first clamping bar, a slide bar, and positioning holes. The first clamping bar and the second clamping bar are respectively engaged at both ends of the inner side of the strip groove. The slide bar is fixedly connected to the end of the first clamping bar near the second clamping bar. Several positioning holes are opened through the middle of the slide bar. An I-shaped groove is opened inside the end of the second clamping bar near the first clamping bar. The slide bar is movably connected to the I-shaped groove.

[0011] Preferably, the clamping mechanism includes a clamping groove, a fixing member, and a clamp. Several clamping grooves are formed on the outer wall of the pressure ring. The clamps are fixedly connected to the first clamping bar and the second clamping bar on the side near the pressure ring. The clamps at both ends engage with the clamping grooves. The clamps and the clamping grooves are fixedly connected by the fixing member.

[0012] Preferably, the outer ring of the core plate is provided with a plurality of threaded grooves;

[0013] Preferably, the number of clamping grooves is the same as the number of strip grooves;

[0014] Preferably, a locking element is provided at the top of the second clamping bar on the side near the first clamping bar.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This stator core with a weld-free riveting structure, through the setting of an adjustment mechanism, when it is necessary to adjust the clamping distance, firstly, the locking member on one side of the top of the second clamping bar is twisted to slide it out of the positioning hole at the corresponding position of the slide bar. Then, the first and second clamping bars are pulled respectively. When pulled, the slide bar at one end of the first clamping bar will slide outward inside the second clamping bar. After the distance between the first and second clamping bars is adjusted, the locking member is twisted again to fix the output end of the locking member in the positioning hole at the corresponding position of the slide bar, thereby achieving the purpose of easy adjustment.

[0017] 2. This stator core with no welding or riveting structure uses a clamping mechanism to stack several pressure rings. Then, two pressure rings are placed on both sides of the stacked core plate. The clamps at both ends of the first and second clamping bars are then engaged in the clamping grooves on the outside of the pressure rings. Next, the fixing member passes through the clamps and clamping grooves and is fixed in the threaded groove on the outside of the core plate. The connection is made by threaded connection. In this way, several core plates can be clamped and fixed by two pressure rings, thereby achieving the purpose of easy clamping. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the clamping mechanism of the present invention;

[0019] Figure 2 This is a schematic diagram of the tooth block mounting structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the adjustment mechanism structure of the present invention;

[0021] Figure 4 For the present invention Figure 1 Enlarged view of point A in the middle;

[0022] Figure 5 For the present invention Figure 3 Enlarged diagram of point B in the middle.

[0023] In the diagram: 1. Core plate; 2. Pressure ring; 3. Clamping mechanism; 4. Strip groove; 5. Adjustment mechanism; 6. Tooth block; 7. Tooth groove; 8. First clamping bar; 9. Second clamping bar; 10. Positioning hole; 11. I-beam groove; 12. Clamping groove; 13. Fixing component; 14. Chuck; 15. Threaded groove; 16. Slide bar. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0028] Please see Figures 1-5 As shown, the present invention provides a technical solution:

[0029] A stator core with a weld-free riveted structure, including...

[0030] Core board 1, with pressure rings 2 at both ends, and the pressure rings 2 at both ends are fixedly connected to the core board 1 by a clamping mechanism 3;

[0031] The strip groove 4 is formed on the outer wall of the core plate 1, and the strip groove 4 is provided with an adjustment mechanism 5 inside;

[0032] Tooth block 6 is located on the inner wall of the core plate 1 at the axis. Tooth groove 7 is provided on both sides of the core plate 1 located on the tooth block 6.

[0033] Through the above scheme, by setting the clamping mechanism 3 and the adjusting mechanism 5, this device fixes several core plates 1 by clamping, which can improve the overall structural stability of the iron core. In addition, the clamping spacing can be adjusted with the adjusting mechanism 5, so that the device can adjust the number of core plates 1 stacked as needed when clamping.

[0034] In this embodiment, preferably, the adjustment mechanism 5 includes a first clamping bar 8, a slide bar 16, and positioning holes 10. The first clamping bar 8 and the second clamping bar 9 are respectively engaged at both ends of the inner side of the strip groove 4. The slide bar 16 is fixedly connected to the end of the first clamping bar 8 near the second clamping bar 9. Several positioning holes 10 are opened through the middle of the slide bar 16. An I-shaped groove 11 is opened inside the end of the second clamping bar 9 near the first clamping bar 8. The slide bar 16 is movably connected to the I-shaped groove 11.

[0035] With the above scheme, by setting the adjustment mechanism 5, when it is necessary to adjust the clamping distance, first twist the locking part on the top side of the second clamping bar 9 to slide it out of the positioning hole 10 at the corresponding position of the slide bar 16. Then pull the first clamping bar 8 and the second clamping bar 9 respectively. When pulling, the slide bar 16 at one end of the first clamping bar 8 will slide outward inside the second clamping bar 9. After the distance between the first clamping bar 8 and the second clamping bar 9 is adjusted, twist the locking part again to thread the output end of the locking part into the positioning hole 10 at the corresponding position of the slide bar 16 and fix it, thereby achieving the purpose of easy adjustment.

[0036] In this embodiment, preferably, the clamping mechanism 3 includes a clamping groove 12, a fixing member 13 and a clamp 14. Several clamping grooves 12 are opened on the outer wall of the pressure ring 2. The clamp 14 is fixedly connected to the side of the first clamping bar 8 and the second clamping bar 9 near the pressure ring 2. The clamps 14 at both ends are engaged with the clamping grooves 12. The clamps 14 and the clamping grooves 12 are fixedly connected by the fixing member 13.

[0037] By using the above scheme, by setting up the clamping mechanism 3, several pressure rings 2 are stacked and placed, and then two pressure rings 2 are placed on both sides of the stacked core plate 1. Then, the clamps 14 at both ends of the first clamping strip 8 and the second clamping strip 9 are snapped into the clamping grooves 12 on the outside of the pressure rings 2. Then, the fixing member 13 is passed through the clamps 14 and the clamping grooves 12 and fixed in the threaded grooves 15 on the outside of the core plate 1. The connection is fixed by threaded connection. In this way, several core plates 1 can be clamped and fixed by the two pressure rings 2, thereby achieving the purpose of easy clamping.

[0038] In this embodiment, preferably, a plurality of threaded grooves 15 are provided through the outer ring of the core plate 1;

[0039] The purpose of setting the threaded groove 15 through the above scheme is to facilitate the connection and fixation of the core plate 1 by the fastener 13 passing through several fasteners 13;

[0040] In this embodiment, preferably, the number of clamping grooves 12 and strip grooves 4 are the same;

[0041] The purpose of setting the clamping groove 12 in the above scheme is to set the number of clamping grooves 12 to be the same as that of the strip groove 4, so as to facilitate the docking during installation.

[0042] In this embodiment, preferably, a locking element is provided at the top of the second clamping bar 9 on the side close to the first clamping bar 8;

[0043] The purpose of setting the locking element in the above scheme is to facilitate the use of the locking element to fix the first clamping bar 8 and the second clamping bar 9 together.

[0044] In this embodiment, the stator core with a weld-free riveting structure is used by first stacking several core plates 1, then placing two clamping rings 2 on both sides of the stacked core plates 1. Next, the clamps 14 at both ends of the first clamping bar 8 and the second clamping bar 9 are engaged in the clamping grooves 12 on the outside of the clamping rings 2. Then, the fixing member 13 passes through the clamps 14 and the clamping grooves 12 and is fixed in the threaded grooves 15 on the outside of the core plate 1. The connection is made by threaded connection. In this way, several core plates 1 can be clamped and fixed by the two clamping rings 2. When needed... When adjusting the clamping distance, first twist the locking member on one side of the top of the second clamping bar 9 to slide it out of the positioning hole 10 at the corresponding position of the slide bar 16. Then pull the first clamping bar 8 and the second clamping bar 9 respectively. When pulling, the slide bar 16 at one end of the first clamping bar 8 will slide outward inside the second clamping bar 9. After the distance between the first clamping bar 8 and the second clamping bar 9 is adjusted, twist the locking member again to thread the output end of the locking member into the positioning hole 10 at the corresponding position of the slide bar 16 to fix it, thereby achieving the purpose of easy adjustment.

[0045] According to one embodiment of this application, the device can solve the problems of unsatisfactory motor performance caused by the lack of firmness and neatness of stator core stacking in existing brushless DC motors. Specifically, it is a stator core with a weld-free riveting structure. During stacking, multiple laminations are stacked together by laser welding at six points on the outer circumference of the stator laminations to ensure inter-laminar pressure. Then, a special grinding process is used to remove the molten layer, firmly forming the core into a whole. The stator core structure provided by this invention eliminates the need for fixing devices such as riveting grooves, lamination grooves, and argon arc welding grooves. This not only improves the overall structural stability of the core and optimizes the motor's magnetic circuit, resulting in a compact spatial layout and increased power density, but also simplifies the stamping process and improves the appearance quality of the core.

[0046] The foregoing has shown and described 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 to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stator core with a weld-free riveted structure, characterized in that: The weld-free riveted stator core includes Core plate (1), both ends of the core plate (1) are provided with pressure rings (2), and the pressure rings (2) at both ends are fixedly connected to the core plate (1) by a clamping mechanism (3); A strip groove (4) is formed on the outer wall of the core plate (1), and an adjustment mechanism (5) is provided inside the strip groove (4). The toothed block (6) is located on the inner wall of the core plate (1) at the axis. The core plate (1) has toothed grooves (7) on both sides of the toothed block (6). The adjusting mechanism (5) includes a first clamping bar (8), a slide bar (16) and a positioning hole (10). The two ends of the inner side of the strip groove (4) are respectively engaged with the first clamping bar (8) and the second clamping bar (9). The first clamping bar (8) is fixedly connected to the slide bar (16) at the end near the second clamping bar (9). The middle part of the slide bar (16) is perforated with several positioning holes (10). The second clamping bar (9) is close to the first clamping bar (9). One end of the clamping bar (8) has an I-shaped groove (11) inside, and the slide bar (16) is movably connected to the I-shaped groove (11); the clamping mechanism (3) includes a clamping groove (12), a fixing member (13) and a clamp (14). Several clamping grooves (12) are opened on the outer wall of the pressure ring (2). The clamps (14) are fixedly connected to the side of the first clamping bar (8) and the second clamping bar (9) near the pressure ring (2). The clamps (14) at both ends are engaged with the clamping grooves (12). The clamps (14) and the clamping grooves (12) are fixedly connected by the fixing member (13).

2. The stator core with a weld-free riveting structure according to claim 1, characterized in that: The outer ring of the core plate (1) is provided with several threaded grooves (15).

3. The stator core with a weld-free riveting structure according to claim 1, characterized in that: The number of clamping grooves (12) is the same as the number of strip grooves (4).

4. The stator core with a weld-free riveting structure according to claim 1, characterized in that: The second clamping bar (9) has a locking element at its top end on the side near the first clamping bar (8).

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