Sealed brushless motor rotor and sealed brushless motor
By setting a raised heat dissipation part on the end face of the rotor body, the problem of poor heat dissipation performance of the sealed brushless motor rotor is solved, the heat dissipation capacity of the rotor is improved, the risk of overheating is reduced, and the stable operation of the motor is ensured.
Patent Information
- Application Number
- CN202422597604.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The rotor of a sealed brushless motor has poor heat dissipation performance, which makes it prone to overheating under high load or long-term operation, affecting motor performance and increasing the risk of failure.
A raised heat dissipation section is provided on the end face of the rotor body to increase the heat dissipation area of the rotor end face. The heat dissipation section drives the airflow to improve the heat dissipation performance.
It effectively reduces the possibility of rotor overheating under high load or long-term operation, ensuring reliable motor operation and ease of use.
Smart Images
Figure CN223744531U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor technical field especially relates to a sealed brushless motor rotor and sealed brushless motor. BACKGROUND
[0002] At present, the sealed brushless motor on the market, its rotor and stator are usually enclosed in the sealed casing, this design although can prevent the invasion of outside dust and moisture, has improved the protection level of motor, but also has brought the problem that the rotor heat dissipation performance is poor. The rotor structure of existing sealed brushless motor is relatively simple, and the heat dissipation capacity is relatively poor. Under the condition of high load or long time operation, the rotor is easy to overheat, which affects the performance of the motor, and even increases the risk of motor failure. SUMMARY
[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, the utility model provides a sealed brushless motor rotor, which is provided with a protruding heat dissipation part on the end face of the rotor main body to increase the heat dissipation area of the rotor, facilitate heat dissipation of the rotor and reduce the possibility of overheating of the rotor under high load or long time operation.
[0004] The utility model also provides a sealed brushless motor with the sealed brushless motor rotor.
[0005] The sealed brushless motor rotor according to the first aspect of the utility model comprises a rotor shaft and a rotor main body, the rotor shaft has an output end, the output end is used to be connected with the outside to output power, the rotor main body is used to be connected with a rotor core, the rotor shaft penetrates through the rotor main body and is fixedly matched with the rotor main body, the rotor main body is provided with a heat dissipation part on one side end face relatively close to the output end and / or one side end face away from the output end, and the heat dissipation part extends along the axis direction of the rotor shaft to protrude relative to the end face of the rotor main body.
[0006] The sealed brushless motor rotor according to the utility model has at least the following beneficial effects: during assembly, the rotor shaft penetrates through the rotor main body and is fixedly matched with the rotor main body, the outer peripheral side of the rotor main body is connected with other components such as the rotor core, and the output end of the rotor shaft is used to be connected with the outside to output power; since the heat dissipation part is provided on one side end face relatively close to the output end and / or one side end face away from the output end of the rotor main body, and the heat dissipation part extends along the axis direction of the rotor shaft to protrude relative to the end face of the rotor main body, the heat dissipation area of the rotor end face can be increased, heat dissipation of the rotor is facilitated, the possibility of overheating of the rotor under high load or long time operation is reduced, and the utility model is convenient to use.
[0007] According to some embodiments of the utility model, the heat dissipation part is in the form of a long strip protruding structure.
[0008] According to some embodiments of the present application, the heat dissipation part is in a curved strip-shaped protruding structure.
[0009] According to some embodiments of the present application, the heat dissipation part is provided with a plurality of uniform intervals around the axis of the rotor shaft.
[0010] According to some embodiments of the present application, the rotor main body is provided with a recess part, and the recess part and the heat dissipation part are arranged on the same side end surface of the rotor main body.
[0011] According to some embodiments of the present application, the recess part is provided with a plurality of recess parts and a plurality of heat dissipation parts, and the recess parts and the heat dissipation parts are alternately distributed around the axis of the rotor shaft.
[0012] According to some embodiments of the present application, a rotation limiting structure is arranged between the rotor shaft and the rotor main body, and the rotation limiting structure is used to limit the rotation of the rotor shaft relative to the rotor main body.
[0013] According to some embodiments of the present application, the rotor main body is provided with a through hole, the rotor shaft passes through the rotor main body through the through hole, the rotation limiting structure includes a cutout and a rotation limiting part, the cutout is arranged on the outer peripheral wall of the rotor shaft, and the rotation limiting part is arranged on the hole wall of the through hole and cooperates with the cutout to limit the rotation of the rotor shaft relative to the rotor main body.
[0014] According to some embodiments of the present application, the outer peripheral wall of the output end is provided with a plurality of notches.
[0015] The sealed brushless motor according to the second aspect of the present application comprises the sealed brushless motor rotor according to the first aspect of the present application.
[0016] The sealed brushless motor according to the present application has at least the following beneficial effects: by adopting the above-mentioned sealed brushless motor rotor, the heat dissipation area of the rotor end surface can be increased, which is beneficial to the heat dissipation of the rotor, reduces the possibility of overheating of the rotor under high load or long time operation, and is beneficial to ensuring the reliable operation of the motor, and is convenient to use.
[0017] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings in which:
[0019] Figure 1Structure schematic view of the sealed brushless motor rotor of the embodiment of the present utility model;
[0020] Figure 2 For Figure 1 Structure schematic view of the cross section of the sealed brushless motor rotor;
[0021] Figure 3 For Figure 1 Structure schematic view of the rotor shaft.
[0022] Reference signs:
[0023] Rotor shaft 100, cutout 101, notch 102, output end 110;
[0024] Rotor main body 200, recess 201, through hole 202, heat dissipation part 210, rotation limiting part 220. DETAILED DESCRIPTION
[0025] The embodiments of the present utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and cannot be understood as a limitation of the present utility model.
[0026] In the description of the present utility model, it is understood that, if the orientation description is involved, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.
[0027] In the description of the present utility model, if the words such as several, greater than, less than, more than, above, below, and within appear, wherein the meaning of several is one or more, the meaning of more than two is more than two, greater than, less than, more than, etc. is not included in the number, and above, below, and within is understood to include the number.
[0028] If the first and second are described for the purpose of distinguishing technical features, they cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0029] In the description of the present utility model, unless otherwise explicitly limited, the words such as setting, installing, and connecting should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present utility model according to the specific content of the technical scheme.
[0030] Refer toFigure 1 and Figure 2 A sealed brushless motor rotor comprises a rotor shaft 100 and a rotor body 200, the rotor shaft 100 has an output end 110 for connecting with the outside to output power, the rotor body 200 is used for connecting with a rotor core, the rotor shaft 100 penetrates the rotor body 200 and is fixedly matched with the rotor body 200, the side end face relatively close to the output end 110 and / or the side end face relatively far away from the output end 110 of the rotor body 200 is provided with a heat dissipation part 210, the heat dissipation part 210 extends along the axis direction of the rotor shaft 100 to protrude relative to the end face of the rotor body 200.
[0031] It can be understood that, as shown in Figure 1 , Figure 2 and Figure 3 , the rotor shaft 100 extends along the up-down direction, the axis thereof is parallel to the up-down direction, the lower end of the rotor shaft 100 is the output end 110, the rotor shaft 100 penetrates the rotor body 200 along the up-down direction, the lower side end face of the rotor body 200 is the side relatively close to the output end 110, the upper side end face of the rotor body 200 is the side relatively far away from the output end 110, the heat dissipation part 210 is arranged on the upper side end face of the rotor body 200 and extends upwardly and protrudes. In assembly, the rotor shaft 100 penetrates the rotor body 200 and is fixedly matched with the rotor body 200, the outer peripheral side of the rotor body 200 is connected with other components such as the rotor core, the output end 110 of the rotor shaft 100 is used for connecting with the outside to output power; since the side end face relatively close to the output end 110 and / or the side end face relatively far away from the output end 110 of the rotor body 200 is provided with the heat dissipation part 210, the heat dissipation part 210 extends along the axis direction of the rotor shaft 100 to protrude relative to the end face of the rotor body 200, therefore the heat dissipation area of the rotor end face can be increased, which is beneficial to the heat dissipation of the rotor, reduces the possibility of overheating of the rotor under high load or long time operation, and is convenient to use.
[0032] In actual application, the specific structure of the rotor shaft 100 and the rotor body 200 can be set according to actual use needs, and the specific structure of the heat dissipation part 210 is not described in detail here, which will be described in detail below.
[0033] In some embodiments, the heat dissipation part 210 is in a long strip protruding structure. It can be understood that, as shown in Figure 1 and Figure 2 , the heat dissipation part 210 is in a long strip protruding structure, which is beneficial to increase the heat dissipation area on the one hand, and on the other hand, the long strip heat dissipation part 210 can drive the airflow in the motor to move when the rotor rotates, thereby reducing the local temperature of the motor, which is beneficial to the heat dissipation and cooling of the motor, and is convenient to use. In actual application, in addition to the above structure, the heat dissipation part 210 can also be a semispherical point protruding structure, which can be set according to actual use needs.
[0034] Further, the heat dissipation part 210 is in a curved strip-shaped protruding structure. It can be understood that, as shown in Figure 1 and Figure 2 , the heat dissipation part 210 is curved in a strip shape. Compared with a straight line, the curved structure is beneficial to make the surface area of the heat dissipation part 210 larger, so as to improve the heat dissipation performance. In actual application, the heat dissipation part 210 can be in a "C" type curved structure or an "S" type curved structure, which can be set according to actual needs.
[0035] Further, the heat dissipation part 210 is provided with a plurality of uniform intervals around the axis of the rotor shaft 100. It can be understood that, as shown in Figure 1 and Figure 2 , the heat dissipation part 210 is provided with twelve, and the twelve heat dissipation parts 210 are uniformly distributed around the rotor shaft 100, which is beneficial to increase the heat dissipation area of the upper side of the rotor, and also beneficial to drive the airflow movement in the motor through the heat dissipation part 210, so as to improve the heat dissipation performance. In actual application, the specific number and distribution position of the heat dissipation part 210 can be set according to actual needs.
[0036] Further, the heat dissipation part 210 is inclined to the end surface of the rotor main body 200 (not shown in the figure). Under the condition of the same height, the surface area of the heat dissipation part 210 arranged in an inclined manner is larger, and the heat dissipation part 210 arranged in an inclined manner is also beneficial to drive the airflow movement, which is beneficial to improve the heat dissipation performance.
[0037] Further, the rotor main body 200 is provided with a recessed part 201, and the recessed part 201 and the heat dissipation part 210 are arranged on the same side end surface of the rotor main body 200. It can be understood that, as shown in Figure 1 and Figure 2 , by arranging the recessed part 201, the recessed part 201 and the heat dissipation part 210 are arranged on the upper side end surface of the rotor main body 200, so as to further increase the heat dissipation area of the upper side end surface of the rotor and further improve the heat dissipation performance. In actual application, in addition to the above structure, the recessed part 201 can also be arranged on the heat dissipation part 210 to increase the surface area of the heat dissipation part 210. The specific shape and recess depth of the recessed part 201 can be set according to actual needs.
[0038] Further, the recessed part 201 is provided with a plurality of recessed parts 201, and the plurality of recessed parts 201 and the plurality of heat dissipation parts 210 are alternately distributed around the axis of the rotor shaft 100. It can be understood that, as shown in Figure 1 and Figure 2 , the recessed part 201 is also provided with twelve, and the twelve recessed parts 201 and the twelve heat dissipation parts 210 are alternately distributed around the rotor shaft 100, which is beneficial to make the heat dissipation of the upper side end surface of the rotor uniform, so as to be convenient to use. In actual application, the specific number and distribution position of the recessed part 201 can be set according to actual needs.
[0039] In some embodiments, a limiting rotation structure is arranged between the rotor shaft 100 and the rotor body 200, and the limiting rotation structure is used to limit the rotation of the rotor shaft 100 relative to the rotor body 200. It can be understood that by arranging the limiting rotation structure to limit the rotation of the rotor shaft 100 relative to the rotor body 200, the fixed fit between the rotor shaft 100 and the rotor body 200 is facilitated, and the effective output of power is ensured.
[0040] Further, the rotor body 200 is provided with a through hole 202, the rotor shaft 100 passes through the rotor body 200 through the through hole 202, the limiting rotation structure includes a cutout 101 arranged on the outer peripheral wall of the rotor shaft 100 and a limiting rotation portion 220 arranged on the hole wall of the through hole 202 and matched with the cutout 101 to limit the rotation of the rotor shaft 100 relative to the rotor body 200.
[0041] It can be understood that, as shown in Figure 2 and Figure 3 , the through hole 202 penetrates up and down, the rotor shaft 100 passes through the rotor body 200 through the through hole 202, the outer peripheral wall of the rotor shaft 100 is provided with the cutout 101, the hole wall of the through hole 202 is provided with the limiting rotation portion 220 protruding from the hole wall, the limiting rotation portion 220 is matched with the cutout 101 to limit the rotation of the rotor shaft 100 relative to the rotor body 200, and the fixed fit is achieved, which is simple in structure and convenient to use. In actual application, the rotor shaft 100 can be embedded in the rotor body 200 when the rotor body 200 is cast, so that the limiting rotation portion 220 is matched with the cutout 101; in addition to the above structure, the rotor shaft 100 and the hole wall of the through hole 202 can also be provided with key grooves, and then the key connection is used to limit the rotation of the rotor shaft 100 relative to the rotor body 200, and the specific form of the limiting rotation structure can be changed accordingly according to actual use needs.
[0042] In some embodiments, the outer peripheral wall of the output end 110 is provided with a plurality of notch grooves 102. It can be understood that, as shown in Figure 1 , Figure 2 and Figure 3 , the notch groove 102 extends in the up-down direction, and a plurality of notch grooves 102 are arranged along the outer peripheral wall of the output end 110 of the rotor shaft 100 and are distributed at intervals, so as to increase the surface roughness of the output end 110 of the rotor shaft 100, reduce the possibility of slipping when the output end 110 is connected with external components, and facilitate the effective output of power. In actual application, the specific structure and the number of the notch grooves 102 can be set according to actual use needs.
[0043] The sealed brushless motor according to the second aspect of the present application comprises the sealed brushless motor rotor according to the first aspect of the present application.
[0044] According to the sealed brushless motor, the sealing brushless motor rotor is adopted, the heat dissipation area of the rotor end face is increased, heat dissipation of the rotor is facilitated, the possibility of overheat of the rotor under high load or long time operation is reduced, reliable operation of the motor is ensured, and the sealed brushless motor is convenient to use.
[0045] Since other configurations of the sealed brushless motor are known to those skilled in the art, they are not described in detail here.
[0046] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art in the technical field without departing from the purpose of the utility model.
Claims
1. A sealed brushless motor rotor, characterized by, The application relates to a sealed brushless motor rotor. The rotor shaft has an output end for connecting with the outside to output power; The rotor body is used for connecting with a rotor core, the rotor shaft passes through the rotor body and is fixedly matched with the rotor body, the rotor body is provided with a heat dissipation part on a side end face relatively close to the output end and / or a side end face far away from the output end, and the heat dissipation part extends along the axis direction of the rotor shaft to protrude relative to the end face of the rotor body.
2. The sealed brushless motor rotor of claim 1, wherein, The heat dissipation part is in a long strip protruding structure.
3. The sealed brushless motor rotor of claim 2, wherein, The heat dissipation part is in a curved long strip protruding structure.
4. The sealed brushless motor rotor of claim 2, wherein, The heat dissipation part is provided with a plurality of uniform interval distribution around the axis of the rotor shaft.
5. The sealed brushless motor rotor of claim 4, wherein, The rotor body is provided with a recess part, and the recess part and the heat dissipation part are arranged on the same side end face of the rotor body.
6. The sealed brushless motor rotor of claim 5, wherein, The recess part is provided with a plurality of recess parts and a plurality of heat dissipation parts which are alternately distributed around the axis of the rotor shaft.
7. The sealed brushless motor rotor of claim 1, wherein, The rotor shaft and the rotor body are provided with a rotation limiting structure for limiting the rotation of the rotor shaft relative to the rotor body.
8. The sealed brushless motor rotor of claim 7, wherein, The rotor body is provided with a through hole, the rotor shaft passes through the rotor body through the through hole, the rotation limiting structure comprises a cutout arranged on the outer peripheral wall of the rotor shaft and a rotation limiting part arranged on the hole wall of the through hole and matched with the cutout to limit the rotation of the rotor shaft relative to the rotor body.
9. The sealed brushless motor rotor of claim 1, wherein, The outer peripheral wall of the output end is provided with a plurality of grooves.
10. A sealed brushless motor characterized by comprising: The application further relates to a sealed brushless motor rotor according to any one of claims 1 to 9.