Shaft assembly and motor

Abstract

The present invention discloses a rotating shaft assembly and a motor. The rotating shaft assembly includes a rotating shaft, on which a first engaging tooth is provided; and a baffle, on which a through hole is provided, and the baffle is sleeved on the rotating shaft through the through hole. The rotating shaft assembly and the motor of the present invention utilize the deformation generated by the deformation member to facilitate the engagement between the first engaging tooth and the second engaging tooth. Under the premise of ensuring reliable fixation between the rotating shaft and the baffle, the assembly and disassembly are convenient and simple, the assembly efficiency is improved, and the production cost is reduced. When disassembling the baffle, the deformation of the deformation member can be utilized again to facilitate the disengagement between the first engaging tooth and the second engaging tooth, effectively overcoming the need to destroy some parts in the prior art to complete the disassembly between the rotating shaft and the baffle. In addition, directly providing the second engaging tooth on the baffle can avoid the need for additional parts to fix the baffle, thereby reducing the number of motor parts, reducing the axial length of the motor, reducing the volume, and reducing the cost of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of driving equipment, and more particularly to a rotating shaft assembly and a motor. Background Art

[0002] The rotor is one of the most important components in a motor. For a permanent magnet motor, the rotor primarily consists of a rotor shaft, rotor core, permanent magnets, and rotor baffles. The rotor core, which is mounted on the rotor shaft, has embedded permanent magnets. Rotor baffles are installed at both ends of the rotor core to prevent magnetic flux leakage from the permanent magnets. Currently, there are two methods for securing the rotor baffle and rotor core to the rotor shaft. One method involves creating an interference fit between the rotor baffle and rotor core. During installation, the baffle and rotor core are cold-pressed or shrink-fitted onto the rotor shaft. However, this process requires specialized tooling, such as a hydraulic press or a high-temperature chamber, and heating to a specified temperature limit. Consequently, this method is inefficient, requires significant equipment, and results in high maintenance costs. Furthermore, this method can easily cause the rotor baffle and rotor core to shift position after prolonged operation or after exposure to severe vibration, increasing motor vibration and noise and impacting motor performance. The other method involves sliding the rotor baffle and rotor core onto the rotor shaft, with one end secured by a stepped stop on the shaft and the other end secured by a locking nut and a retaining washer. Once the locking nut is tightened into place, the retaining washer is bent and secured, or welded to the shaft using a welding ring. This method increases the number of parts, axial length, and motor cost. Both methods can damage parts when disassembly and reassembly are necessary, making disassembly and assembly difficult. Summary of the Invention

[0003] The invention discloses a rotating shaft assembly and a motor, which solve the problems in the prior art that baffles are difficult to disassemble and assemble and that parts need to be destroyed, resulting in low maintenance efficiency and high costs.

[0004] The present invention discloses a rotating shaft assembly, comprising:

[0005] A rotating shaft, wherein the rotating shaft is provided with a first engaging tooth;

[0006] A baffle, wherein a through hole is provided on the baffle, and the baffle is sleeved on the rotating shaft through the through hole, a deformation structure is provided in the through hole, and a second engaging tooth is provided on the deformation structure;

[0007] The first engaging teeth and the second engaging teeth are engaged with each other.

[0008] The deformation structure includes a clamping plate, the clamping plate is connected to the baffle, and the clamping plate is located inside the through hole;

[0009] There is a distance between the clamping plate and the inner wall of the through hole, and the clamping plate can move toward the inner wall of the through hole to generate deformation;

[0010] The second engaging teeth are arranged on the engaging plate.

[0011] The clamping plate has a first end and a second end opposite to each other, the first end is connected to the baffle, the distance between the second end and the inner wall of the through hole is adjustable, and the second clamping tooth is arranged between the first end and the second end.

[0012] The second engaging tooth has an engaging surface, the engaging surface is engaged with the first engaging tooth, and the engaging surface faces the second end.

[0013] The clamping surface is perpendicular to the axis of the rotating shaft.

[0014] The cross section of the second engaging tooth is a right triangle, and the shape of the engaging surface in the cross section constitutes a right-angled side of the right triangle.

[0015] A buckle handle is provided at the second end.

[0016] The number of the clamping plates is at least two, and the clamping plates are arc-shaped structures. All the clamping plates are distributed in the through hole in a ring shape, and each of the clamping plates is provided with at least one second clamping tooth.

[0017] A matching shaft section is formed on the rotating shaft, and all the first engaging teeth are arranged in parallel on the matching shaft section along the axial direction of the rotating shaft.

[0018] Another aspect of the present invention provides a motor including the above-mentioned rotating shaft assembly.

[0019] The rotating shaft assembly and the motor of the present invention utilize the deformation generated by the deformation member to facilitate the engagement between the first engaging tooth and the second engaging tooth. Under the premise of ensuring reliable fixation between the rotating shaft and the baffle, the assembly and disassembly are convenient and simple, the assembly efficiency is improved, and the production cost is reduced. When disassembling the baffle, the deformation of the deformation member can be utilized again to facilitate the disengagement between the first engaging tooth and the second engaging tooth, effectively overcoming the need to destroy some parts in the prior art to complete the disassembly between the rotating shaft and the baffle, reducing material loss, and directly arranging the second engaging tooth on the baffle can avoid the need for additional parts to fix the baffle, thereby reducing the number of motor parts, reducing the axial length of the motor, reducing the volume, and reducing the cost of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a cross-sectional view of a rotating shaft assembly according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A local schematic diagram of point A;

[0022] Figure 3is a structural schematic diagram of the installation process of the rotating shaft assembly according to an embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of a rotating shaft according to an embodiment of the present invention;

[0024] Figure 5 1 is a schematic structural diagram of a baffle according to an embodiment of the present invention;

[0025] Figure 6 is a cross-sectional view of a baffle according to an embodiment of the present invention;

[0026] Figure 7 is another cross-sectional view of a baffle according to an embodiment of the present invention;

[0027] Figure 8 is another cross-sectional view of a baffle according to an embodiment of the present invention;

[0028] Legend: 1. Rotating shaft; 11. First engaging tooth; 2. Baffle; 3. Second engaging tooth; 4. Engaging plate;. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the embodiments, but is not limited to the contents of the description.

[0030] like Figures 1 to 8 As shown, the present invention discloses a rotating shaft assembly, comprising: a rotating shaft 1, on which a first engaging tooth 11 is provided; a baffle 2, on which a through hole is provided, and the baffle 2 is sleeved on the rotating shaft 1 through the through hole, a deformation structure is provided in the through hole, and a second engaging tooth 3 is provided on the deformation structure; the first engaging tooth 11 and the second engaging tooth 3 are engaged with each other. The deformation generated by the deformable member facilitates the clamping fit between the first clamping tooth 11 and the second clamping tooth 3. Under the premise of ensuring reliable fixation between the rotating shaft 1 and the baffle 2, the assembly and disassembly are convenient and simple, the assembly efficiency is improved, and the production cost is reduced. When disassembling the baffle 2, the deformation of the deformable member can be used again to facilitate the disengagement between the first clamping tooth 11 and the second clamping tooth 3, effectively overcoming the need to destroy some parts in the prior art to complete the disassembly between the rotating shaft 1 and the baffle 2, reducing material loss, and directly arranging the second clamping tooth 3 on the baffle 2 can avoid the need for additional parts to fix the baffle 2, thereby reducing the parts of the rotating shaft 1 assembly, and can reduce the axial length of the rotating shaft 1, reduce the volume, and reduce the cost.

[0031] The deformation structure includes a clamping plate 4 connected to the baffle 2 and located within the through-hole. A gap exists between the clamping plate 4 and the inner wall of the through-hole, allowing the clamping plate 4 to move toward the inner wall of the through-hole to deform. The second clamping teeth 3 are disposed on the clamping plate 4. When the second clamping teeth 3 need to be moved, the clamping plate 4 is squeezed to move toward the inner wall of the through-hole. Driven by the clamping plate 4, the second clamping teeth 3 move away from the first clamping teeth 11, and the baffle 2 can then be installed or removed.

[0032] The clamping plate 4 has a first end and a second end opposite to each other, the first end is connected to the baffle 2, the distance between the second end and the inner wall of the through hole is adjustable, and the second clamping teeth 3 are arranged between the first end and the second end. The magnitude and cross-sectional size of the second clamping teeth 3 are determined according to actual needs, such as Figures 6 to 8 shown.

[0033] When installing the baffle 2, the baffle 2 is directly pushed, and the mutual extrusion of the first engaging teeth 11 and the second engaging teeth 3 is used to force the second engaging teeth 3 to move and the deformation structure to deform. After continuous extrusion and deformation, the baffle 2 moves to the set position.

[0034] When the baffle 2 needs to be removed, the clamping plate 4 is expanded outward with the help of a tool (the second end moves toward the inner wall of the through hole, and the spacing is reduced), so that the second clamping tooth 3 is disengaged from the first clamping tooth 11, and then the baffle 2 is pushed in the axial direction to complete the separation of the baffle 2 from the rotating shaft 1. During the process of removing the baffle 2, the clamping plate 4 is always in the expanded state.

[0035] All second engaging teeth 3 are arranged side by side in a direction from the first end to the second end. A mating shaft section is formed on the rotating shaft 1, and all first engaging teeth 11 are arranged side by side on the mating shaft section along the axis of the rotating shaft 1. The mating of the first engaging teeth 11 and the second engaging teeth 3 can restrict movement of the baffle 2 on the rotating shaft 1 along the axis of the rotating shaft 1.

[0036] The second engaging tooth 3 has an engaging surface that engages with the first engaging tooth 11 and faces the second end. Preferably, the engaging surface is perpendicular to the axis of the rotating shaft 1. This perpendicular engaging surface creates an axial restriction between the baffle 2 and the rotating shaft 1, thereby achieving locking.

[0037] The cross-section of the second engaging tooth 3 is a right triangle, with the engaging surface in this cross-section forming one of the right-angled sides of the triangle. This right-angled triangle structure ensures that the engaging surface is less likely to deform during the engaging process, thereby ensuring a secure engagement between the first engaging tooth 11 and the second engaging tooth 3. The hypotenuse of the right triangle also serves as a guide during the extrusion and installation of the baffle 2, facilitating relative movement between the second engaging tooth 3 and the first engaging tooth 11, thereby facilitating installation.

[0038] Preferably, the cross-section of the first engaging tooth 11 is also a right triangle, and its function and effect are the same as those of the second engaging tooth 3. The engaging surface perpendicular to the axis is used to limit the axial direction between the baffle 2 and the rotating shaft 1 to achieve locking, ensuring that the engaging surface is not easily deformed during the engaging process, thereby ensuring the engaging effect between the first engaging tooth 11 and the second engaging tooth 3.

[0039] Preferably, there are at least two clamping plates 4 , and the clamping plates 4 are arc-shaped. All the clamping plates 4 are distributed in a ring shape in the through hole, and each clamping plate 4 is provided with at least one second clamping tooth 3 .

[0040] At least two second engaging teeth 3 form a ring, the plane of the ring is perpendicular to the axis of the rotating shaft 1 , and all the second engaging teeth 3 form multiple rings, which are arranged in parallel along the axis of the rotating shaft 1 .

[0041] A buckle portion is provided at the second end, and deformation of the clamping plate 4 is achieved by applying pressure to the buckle portion.

[0042] Another aspect of the present invention provides a motor including the above-mentioned rotating shaft 1 assembly.

[0043] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not possible to enumerate all embodiments here. Any obvious variations or modifications arising from the technical solution of the present invention remain within the scope of protection of the present invention.

Claims

1. A rotating shaft assembly, characterized in that: include: A rotating shaft (1), wherein the rotating shaft (1) is provided with a first engaging tooth (11); A baffle (2), wherein a through hole is provided on the baffle (2), and the baffle (2) is sleeved on the rotating shaft (1) through the through hole, a deformation structure is provided in the through hole, and a second engaging tooth (3) is provided on the deformation structure; The first engaging tooth (11) and the second engaging tooth (3) are engaged with each other; The deformation structure comprises a clamping plate (4), the clamping plate (4) is connected to the baffle (2), and the clamping plate (4) is located inside the through hole; There is a distance between the clamping plate (4) and the inner wall of the through hole, and the clamping plate (4) can move toward the inner wall of the through hole to generate deformation; The second clamping teeth (3) are arranged on the clamping plate (4).

2. The shaft assembly according to claim 1, wherein: The clamping plate (4) has a first end and a second end opposite to each other, the first end is connected to the baffle (2), the distance between the second end and the inner wall of the through hole is adjustable, and the second clamping tooth (3) is arranged between the first end and the second end.

3. The shaft assembly according to claim 2, wherein: The second engaging tooth (3) has an engaging surface, the engaging surface is engaged with the first engaging tooth (11), and the engaging surface faces the second end.

4. The shaft assembly according to claim 3, wherein: The clamping surface is perpendicular to the axis of the rotating shaft (1).

5. The shaft assembly according to claim 3, wherein: The cross section of the second engaging tooth (3) is a right triangle, and the shape of the engaging surface in the cross section constitutes a right-angled side of the right triangle.

6. The shaft assembly according to claim 2, wherein: A buckle handle is provided at the second end.

7. The shaft assembly according to claim 1, wherein: The number of the clamping plates (4) is at least two, and the clamping plates (4) are of an arc-shaped structure. All the clamping plates (4) are distributed in an annular shape in the through hole, and each of the clamping plates (4) is provided with at least one second clamping tooth (3).

8. The shaft assembly according to claim 1, wherein: A matching shaft section is formed on the rotating shaft (1), and all the first engaging teeth (11) are arranged in parallel on the matching shaft section along the axial direction of the rotating shaft (1).

9. A motor, characterized in that: A rotary shaft assembly comprising any one of claims 1 to 8.

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