Rotor

Abstract

The utility model discloses a rotor, which comprises a rotating shaft provided with a supporting part at one end along the axial direction; the first end cover is arranged on the rotating shaft in a sleeving mode and abuts against the supporting part in the axial direction; the plurality of silicon steel sheets sequentially sleeve the rotating shaft in the axial direction, and the rotating shaft can drive the plurality of silicon steel sheets to rotate; the second end cover sleeves the rotating shaft, the plurality of silicon steel sheets are located between the first end cover and the second end cover in the axial direction, and the second end cover abuts against the silicon steel sheets in the axial direction; the locking ring sleeves the rotating shaft, an inner ring of the locking ring is provided with internal threads, the part, corresponding to the locking ring, of the rotating shaft is provided with external threads, and the locking ring is in threaded connection with the rotating shaft; and the double-layer self-locking gasket is arranged on the rotating shaft in a sleeving mode and located between the locking ring and the second end cover in the axial direction. According to the utility model, the installation process of the rotor can be effectively simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a rotor. Background Art

[0002] In a motor, a stator and a rotor are usually included, wherein the rotor is composed of a rotating shaft and a plurality of silicon steel sheets. When the motor is working, the rotating shaft drives the plurality of silicon steel sheets to rotate.

[0003] In the prior art, a plurality of silicon steel sheets are sequentially sleeved on the rotating shaft along the axial direction and are located between two end covers. Finally, the rotor is installed by fixing the end covers to press the plurality of silicon steel sheets.

[0004] For example, a locking ring is provided at the end of the rotor, the locking ring is sleeved on the rotating shaft, and the end cover is located between the locking ring and the silicon steel sheet along the axial direction. A pre-tightening force is applied to the end cover along the axial direction through the locking ring, and at the same time, the locking ring and the rotating shaft are interference fit to achieve the fixation of the silicon steel sheet, the end cover and the rotating shaft.

[0005] For another example, multiple bolts are provided so that the multiple bolts sequentially pass through multiple silicon steel sheets and two end covers in the axial direction and are fixed, so as to fix the silicon steel sheets, the end covers and the rotating shaft.

[0006] However, the above installation method is too complicated, resulting in low processing efficiency. Utility Model Content

[0007] The utility model aims to solve the problem that the current rotor installation method is complicated and leads to low processing efficiency. The utility model provides a rotor, which can effectively simplify the installation process of the rotor.

[0008] In order to solve the above technical problems, the embodiment of the utility model discloses a rotor, comprising:

[0009] A rotating shaft, one end of which along the axial direction is provided with a supporting portion;

[0010] A first end cover, sleeved on the rotating shaft, wherein the first end cover abuts against the supporting portion along the axial direction;

[0011] A plurality of silicon steel sheets are sequentially sleeved on the rotating shaft along the axial direction, and the rotating shaft can drive the plurality of silicon steel sheets to rotate;

[0012] A second end cover is sleeved on the rotating shaft, wherein the plurality of silicon steel sheets are located between the first end cover and the second end cover along the axial direction, and the second end cover abuts against the silicon steel sheets along the axial direction;

[0013] A lock ring is sleeved on the rotating shaft, the inner ring of the lock ring is provided with an internal thread, the portion of the rotating shaft corresponding to the lock ring is provided with an external thread, and the lock ring is threadedly connected to the rotating shaft;

[0014] A double-layer self-locking washer is sleeved on the rotating shaft, and the double-layer self-locking washer is located between the locking ring and the second end cover along the axial direction.

[0015] By adopting the above technical solution, by providing an internal thread on the inner ring of the lock ring, providing an external thread on the rotating shaft, and connecting the lock ring with the rotating shaft through threads, the installation of the rotor is greatly simplified, and the installation efficiency can be improved. At the same time, a double-layer self-locking washer is provided between the lock ring and the second end cover, and the double-layer self-locking washer can effectively prevent the vibration generated during the rotation of the rotor from causing the lock ring to separate from the second end cover, that is, it can effectively ensure the performance and service life of the rotor. Moreover, in the embodiment of the present application, the double-layer self-locking washer can be mass-produced with low cost.

[0016] According to another specific embodiment of the utility model, the double-layer self-locking washer includes a first washer and a second washer;

[0017] The first washer has a first serrated surface and a second serrated surface, and the first serrated surface and the second serrated surface are arranged opposite to each other along the axial direction;

[0018] The second washer has a third serrated surface and a fourth serrated surface, and the third serrated surface and the fourth serrated surface are arranged opposite to each other along the axial direction;

[0019] The first serrated surface abuts against the second end cover along the axial direction;

[0020] The second serrated surface abuts against the lock ring along the axial direction;

[0021] The second serration surface and the third serration surface mesh with each other.

[0022] According to another specific embodiment of the utility model, the first serrated surface includes a plurality of first serrations sequentially distributed along the circumference of the first gasket, and the second serrated surface includes a plurality of second serrations sequentially distributed along the circumference of the first gasket;

[0023] The third serration surface includes a plurality of third serrations sequentially distributed along the circumference of the second gasket, and the fourth serration surface includes a plurality of fourth serrations sequentially distributed along the circumference of the second gasket.

[0024] According to another specific embodiment of the utility model, the second sawtooth has a first inclined surface, and the angle between the first inclined surface and the radial direction of the rotating shaft is a first angle;

[0025] The third sawtooth has a second inclined surface, and the second inclined surface is in contact with one of the first inclined surfaces;

[0026] The first included angle is greater than a thread lead angle of the external thread of the rotating shaft.

[0027] With the above technical solution, when the rotor vibrates during rotation, the lock ring is displaced axially relative to the second end cover due to the vibration. Since the lock ring is connected to the rotating shaft through threads, the lock ring must rotate relative to the rotating shaft. However, the first angle is greater than the lead angle of the external thread on the rotating shaft, that is, the axial displacement generated by the lock ring relative to the rotating shaft for each rotation cannot drive the second washer to rotate to make a third serration pass over a first inclined surface of a second serration in the circumferential direction, but will be locked again by the second serration surface and the third serration surface to achieve self-locking.

[0028] According to another specific embodiment of the present invention, along the circumference of the first washer, the length of each of the second serrations is greater than the length of each of the first serrations.

[0029] According to another specific embodiment of the present invention, along the axial direction, the height of each of the first saw teeth is smaller than the height of each of the second saw teeth.

[0030] According to another specific embodiment of the present invention, along the circumference of the second washer, the length of each of the third serrations is greater than the length of each of the fourth serrations.

[0031] According to another specific implementation of the present utility model, along the axial direction, the height of each of the third saw teeth is greater than the height of each of the fourth saw teeth.

[0032] According to another specific embodiment of the present utility model, the second sawtooth and the third sawtooth are both wedge-shaped sawtooth;

[0033] A wedge-shaped groove is formed between every two adjacent second saw teeth, and each of the wedge-shaped grooves is matched with one of the third saw teeth in a concave-convex manner.

[0034] According to another specific embodiment of the present utility model, along the axial direction, the length of the external thread of the rotating shaft is longer than the length of the locking ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A side view of a rotor according to an embodiment of the utility model is shown;

[0036] Figure 2 A three-dimensional view of a rotor according to an embodiment of the utility model is shown;

[0037] Figure 3 An exploded structural view showing a first washer and a second washer of a rotor according to an embodiment of the utility model;

[0038] Figure 4 A three-dimensional view showing the engagement of the first washer and the second washer of the rotor according to the embodiment of the utility model. DETAILED DESCRIPTION

[0039] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0040] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0041] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply 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 on the utility model.

[0042] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0043] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0044] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] refer to Figure 1The embodiment of the present application provides a rotor, comprising: a rotating shaft 101, a first end cover 102, a plurality of silicon steel sheets 103, a second end cover 104, a locking ring 105, and a double-layer self-locking washer 106. Along the axial direction X, the first end cover 102, the plurality of silicon steel sheets 103, the second end cover 104, the double-layer self-locking washer 106, and the locking ring 105 are sequentially sleeved on the rotating shaft 101.

[0046] Exemplarily, a support portion 1011 is provided at one end of the rotating shaft 101 along the axial direction. After the rotor is installed, the support portion 101 abuts against the first end cover 102 .

[0047] A plurality of silicon steel sheets 103 are sequentially sleeved on the rotating shaft 101 along the axial direction, and the rotating shaft 101 can drive the plurality of silicon steel sheets 103 to rotate. Along the axial direction X, the plurality of silicon steel sheets 103 are located between the first end cover 102 and the second end cover 104, and the second end cover 104 abuts against the silicon steel sheets 103 along the axial direction X. In the embodiment of the present application, the number of silicon steel sheets 103 is six, but is not limited thereto, and can also be eight, ten, or more, for example, and can be set according to actual needs.

[0048] Exemplarily, the inner ring of the lock ring 105 is provided with an internal thread (not shown in the figure), the portion of the rotating shaft 101 corresponding to the lock ring 105 is provided with an external thread (not shown in the figure), and the lock ring 105 is threadedly connected to the rotating shaft 101. Along the axial direction X, the double-layer self-locking washer 106 is located between the lock ring 105 and the second end cover 104.

[0049] The rotor provided in the embodiment of the present application greatly simplifies the installation of the rotor by providing an internal thread on the inner ring of the locking ring 105 and an external thread on the rotating shaft 101, and the locking ring 105 is threadedly connected to the rotating shaft 101, thereby improving the installation efficiency. At the same time, a double-layer self-locking washer 106 is provided between the locking ring 105 and the second end cover 104 along the axial direction X. The double-layer self-locking washer 106 can effectively prevent the vibration generated during the rotation of the rotor from causing the locking ring 105 to separate from the second end cover 104, that is, it can effectively ensure the performance and service life of the rotor. In addition, in the embodiment of the present application, the double-layer self-locking washer 106 can be mass-produced at a low cost.

[0050] refer to Figures 2 to 4 In some possible implementations, the double-layer self-locking washer 106 includes a first washer 1061 and a second washer 1062, wherein the first washer 1061 has a first serrated surface 1071 and a second serrated surface 1072, and the first serrated surface 1071 and the second serrated surface 1072 are disposed opposite to each other along the axial direction X. The second washer 1062 has a third serrated surface 1073 and a fourth serrated surface 1074, and the third serrated surface 1073 and the fourth serrated surface 1074 are disposed opposite to each other along the axial direction X.

[0051] Exemplarily, the first serrated surface 1071 abuts against the second end cover 104 along the axial direction X, and the fourth serrated surface 1074 abuts against the lock ring 105 along the axial direction X. The second serrated surface 1072 and the third serrated surface 1073 mesh with each other.

[0052] Exemplarily, the first sawtooth surface 1071 includes a plurality of first sawteeth 1081 sequentially distributed along the circumferential direction R1 of the first gasket 1061, and the second sawtooth surface 1072 includes a plurality of second sawteeth 1082 sequentially distributed along the circumferential direction R1 of the first gasket 1061. The third sawtooth surface 1073 includes a plurality of third sawteeth 1083 sequentially distributed along the circumferential direction R2 of the second gasket 1062, and the fourth sawtooth surface 1074 includes a plurality of fourth sawteeth 1084 sequentially distributed along the circumferential direction R2 of the second gasket 1062. The plurality of second sawteeth 1082 and the plurality of third sawteeth 1083 are meshed.

[0053] In some possible implementations, the material of the second end cover 104 is softer than the material of the double-layer self-locking washer 106. For example, the material of the second end cover 104 is aluminum, and the material of the double-layer self-locking washer 106 is steel, but it is not limited thereto and can be other materials as long as the material of the second end cover 104 is softer than the material of the double-layer self-locking washer 106. When the rotor is installed, the plurality of first serrations 1081 abut against the second end cover 104. Since the material of the second end cover 104 is softer than the material of the double-layer self-locking washer 106, the plurality of first serrations 1081 on the first serration surface 1071 will form indentations on the second end cover 104, thereby increasing the friction between the first serration surface 1071 and the second end cover 104.

[0054] In some possible implementations, the material of the lock ring 105 is softer than that of the double-layer self-locking washer 106. For example, the lock ring 105 and the double-layer self-locking washer 106 are both made of steel, but the double-layer self-locking washer 106 is made harder than the lock ring 105 through processing, but is not limited to this and may be made of other materials. When the rotor is installed, the plurality of fourth serrations 1084 abut against the lock ring 105. Since the material of the lock ring 105 is softer than that of the double-layer self-locking washer 106, the plurality of fourth serrations 1084 on the fourth serration surface 1074 will form indentations on the lock ring 105, thereby increasing the friction between the fourth serration surface 1074 and the lock ring 105.

[0055] refer to Figure 3 and Figure 4 , the second sawtooth 1082 and the third sawtooth 1083 are both wedge-shaped sawtooth. Taking the first washer 1061 as an example, refer to Figure 4 A wedge-shaped groove 10823 is formed between every two adjacent second saw teeth 1082 , and each wedge-shaped groove 10823 is matched with a third saw tooth 1083 in a concave-convex manner, that is, each wedge-shaped saw tooth is inserted into a wedge-shaped groove 10823 .

[0056] Furthermore, the second sawtooth 1082 has a first inclined surface 10821, and the angle between the first inclined surface 10821 and the radial direction Y of the shaft 101 is a first angle α (i.e., the inclined surface inclination angle), and the first angle α is greater than the thread lead angle (not shown) of the external thread on the shaft 101. The third sawtooth 1083 has a second inclined surface 10822, and the second inclined surface 10822 is in contact with one of the first inclined surfaces 10821.

[0057] According to the above technical solution, when the rotor vibrates during rotation, the lock ring 105 is displaced relative to the second end cover 104 along the axial direction X due to the vibration. Since the lock ring 105 is connected to the rotating shaft 101 through threads, the lock ring 105 must rotate relative to the rotating shaft 101. As mentioned above, since the fourth serration 1084 will form an indentation on the lock ring 105, thereby increasing the friction between the fourth serration surface 1074 and the lock ring 105, the lock ring 105 will drive the second washer 1062 to rotate together. However, the first angle α is greater than the thread lead angle of the external thread on the rotating shaft 101, that is, referring to Figure 4 Combined with Figure 1 The displacement along the axial direction X generated by each rotation of the locking ring 105 relative to the rotating shaft 101 cannot drive the second washer 1062 to rotate to make a third serration 1083 pass over the first inclined surface 10821 of a second serration 1082 from one wedge groove 10823a to the next wedge groove 10823b along the circumferential direction R1, but will be locked again by the third serration 1083 and the wedge groove 10823a to achieve self-locking.

[0058] In some possible implementations, along the circumferential direction R1 of the first washer 1061, the length of each second sawtooth 1082 is greater than the length of each first sawtooth 1081. Along the axial direction X, the height of each first sawtooth 1081 is less than the height of each second sawtooth 1082. Along the circumferential direction R2 of the second washer 1062, the length of each third sawtooth 1083 is greater than the length of each fourth sawtooth 1084. Along the axial direction X, the height of each third sawtooth 1083 is greater than the height of each fourth sawtooth 1084.

[0059] In some possible implementations, along the axial direction X, the length of the external thread of the rotating shaft 101 is longer than the length of the locking ring 105 .

[0060] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A rotor, characterized in that: include: A rotating shaft, one end of which is provided with a support portion along the axial direction; A first end cover, sleeved on the rotating shaft, wherein the first end cover abuts against the supporting portion along the axial direction; A plurality of silicon steel sheets are sequentially sleeved on the rotating shaft along the axial direction, and the rotating shaft can drive the plurality of silicon steel sheets to rotate; A second end cover is sleeved on the rotating shaft, wherein the plurality of silicon steel sheets are located between the first end cover and the second end cover along the axial direction, and the second end cover abuts against the silicon steel sheets along the axial direction; A lock ring is sleeved on the rotating shaft, the inner ring of the lock ring is provided with an internal thread, the portion of the rotating shaft corresponding to the lock ring is provided with an external thread, and the lock ring is threadedly connected to the rotating shaft; A double-layer self-locking washer is sleeved on the rotating shaft, and the double-layer self-locking washer is located between the locking ring and the second end cover along the axial direction.

2. The rotor according to claim 1, characterized in that The double-layer self-locking washer comprises a first washer and a second washer; The first washer has a first serrated surface and a second serrated surface, and the first serrated surface and the second serrated surface are arranged opposite to each other along the axial direction; The second washer has a third serrated surface and a fourth serrated surface, and the third serrated surface and the fourth serrated surface are arranged opposite to each other along the axial direction; The first serrated surface abuts against the second end cover along the axial direction; The second serrated surface abuts against the lock ring along the axial direction; The second serration surface and the third serration surface mesh with each other.

3. The rotor according to claim 2, characterized in that The first serration surface includes a plurality of first serrations sequentially distributed along the circumference of the first gasket, and the second serration surface includes a plurality of second serrations sequentially distributed along the circumference of the first gasket; The third serration surface includes a plurality of third serrations sequentially distributed along the circumference of the second gasket, and the fourth serration surface includes a plurality of fourth serrations sequentially distributed along the circumference of the second gasket.

4. The rotor according to claim 3, characterized in that The second sawtooth has a first inclined surface, and the angle between the first inclined surface and the radial direction of the rotating shaft is a first angle; The third sawtooth has a second inclined surface, and the second inclined surface is in contact with one of the first inclined surfaces; The first included angle is greater than a thread lead angle of the external thread of the rotating shaft.

5. The rotor according to claim 3, characterized in that Along the circumference of the first gasket, the length of each of the second serrations is greater than the length of each of the first serrations.

6. The rotor according to claim 3, characterized in that Along the axial direction, a height of each of the first saw teeth is smaller than a height of each of the second saw teeth.

7. The rotor according to claim 3, characterized in that Along the circumference of the second gasket, the length of each of the third serrations is greater than the length of each of the fourth serrations.

8. The rotor according to claim 3, characterized in that Along the axial direction, the height of each of the third saw teeth is greater than the height of each of the fourth saw teeth.

9. The rotor according to claim 3, characterized in that The second sawtooth and the third sawtooth are both wedge-shaped sawtooth; A wedge-shaped groove is formed between every two adjacent second saw teeth, and each of the wedge-shaped grooves is matched with one of the third saw teeth in a concave-convex manner.

10. The rotor according to any one of claims 1 to 9, characterized in that Along the axial direction, the length of the external thread of the rotating shaft is longer than the length of the locking ring.

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