Motor end cover and motor
By setting mounting holes at different positions on the end cover of the motor to adapt to the stator diameter of different specifications, the problem of frequent replacement of the end cover in the prior art is solved, and the cost is reduced.
Patent Information
- Application Number
- CN202420266680.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-02
AI Technical Summary
The existing motor end cover needs to be replaced according to the stator diameter of different specifications, resulting in increased material and labor costs.
Design a motor end cover, including an inner ring, an outer ring and a rib strip, and the first and second mounting holes are provided, and the distance between the center of the second mounting hole and the center of the inner ring is greater than that of the center of the first mounting hole and the center of the inner ring. distance, thus adapting to stator diameters of different specifications.
The same motor end cap can be used for two specifications of stator installations without the need to replace the end cap, reducing material and manual design costs.
Smart Images
Figure CN222484429U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of motors and technology, and specifically to a motor end cover and a motor. Background Art
[0002] In the prior art, one motor end cover basically corresponds to one specification of stator. If the stator diameter is changed, the motor end cover must also be replaced accordingly to adapt to the installation of the stator, which increases both material costs and labor costs. Therefore, it is necessary to improve the motor end cover structure. Utility Model Content
[0003] The utility model aims to overcome the defects of the prior art and provides a motor end cover and a motor.
[0004] In order to achieve the above purpose and other purposes, the utility model is implemented through the following technical solutions: a motor end cover is provided, including an inner ring, a bearing mounting hole is arranged on one side of the inner ring; an outer ring, the outer ring is located on the outside of the inner ring, and the outer ring is concentric with the inner ring; an even number of ribs are connected between the inner ring and the outer ring, the ribs are at least 4, and at least 4 ribs extend along the radial direction of the outer ring, among two adjacent ribs, one of the ribs is provided with a first mounting hole, and the other rib is provided with a second mounting hole, the distance between the center of the second mounting hole and the center of the inner ring is greater than the distance between the first mounting hole and the center of the inner ring, and the first mounting hole or the second mounting hole is used to connect the stator.
[0005] Furthermore, the first mounting hole is located on the rib near the end of the outer ring.
[0006] Furthermore, the second mounting hole is arranged at the connection between the rib and the outer ring.
[0007] Furthermore, there are eight ribs, which are evenly arranged between the inner ring and the outer ring along the circumferential direction.
[0008] Furthermore, each of the ribs is provided with a weight-reducing cavity, and the weight-reducing groove extends along the radial direction of the outer ring.
[0009] Furthermore, the weight-reducing cavity penetrates the rib along the axial direction of the motor end cover.
[0010] Furthermore, the motor end cover also includes an annular rib, wherein the annular rib is located between the inner ring and the outer ring, and the annular rib connects an even number of the ribs along the circumferential direction.
[0011] Furthermore, the outer ring includes a first outer ring portion and a second outer ring portion, the axial width of the second outer ring portion is smaller than the axial width of the first outer ring portion, the second outer ring portion is integrally formed in the circumferential direction at the middle part of the outer circumferential surface of the first outer ring portion, and the outer circumferential surfaces of the two ends of the first outer ring portion form a first concave platform and a second concave platform.
[0012] Furthermore, the second mounting hole is arranged at the connection between the rib and the first outer ring.
[0013] The utility model also provides a motor, comprising the motor end cover described above, and also comprising a motor housing, wherein the motor housing and the end cover form a stator mounting cavity; a stator, wherein the stator is located in the stator mounting cavity, and the stator is connected to the motor end cover through the first mounting hole or the second mounting hole; and a rotor, wherein the rotor is located in the stator, one end of the rotor is mounted in the bearing mounting hole through a first bearing, and the other end is mounted on the motor housing through a second bearing.
[0014] According to the utility model, a first mounting hole and a second mounting hole are arranged on the motor end cover, and a distance between a center of the second mounting hole and a center of the inner ring is greater than a distance between a center of the first mounting hole and a center of the inner ring. Therefore, the second mounting hole is used to install a stator with a larger diameter, and the first mounting hole is used to install a stator with a smaller diameter. That is, the same motor end cover can be used for the installation of stators of two specifications. When the stator diameter is changed, there is no need to replace the motor end cover, thereby reducing material costs and labor design costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Shown is a three-dimensional structural diagram of the motor end cover of the utility model.
[0016] Figure 2 Shown is the front view of the motor end cover of the utility model.
[0017] Figure 3 Shown is a side view of the motor end cover of the utility model. DETAILED DESCRIPTION
[0018] See also Figures 1 to 3 . The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.
[0019] like Figure 1 The figure shows a schematic diagram of the structure of the motor end cover of the utility model. The motor end cover includes an inner ring 1, an outer ring 2 and ribs 3. The ribs 3 are an even number. A bearing mounting hole 11 is provided on one side of the inner ring 1 for mounting a rotor bearing. The outer ring 2 is located on the outer side of the inner ring 1. The outer ring 2 is concentric with the inner ring 1. An even number of the ribs 3 are connected between the inner ring 1 and the outer ring 2. An even number of the ribs 3 are arranged at intervals along the circumference of the outer ring 2. In this embodiment, in order to ensure the strength of the motor end cover, there are at least 4 ribs 3, and at least 4 ribs 3 extend radially along the outer ring 2. Among two adjacent ribs 3, one of the ribs 3 is provided with a first mounting hole 31, and the other of the ribs 3 is provided with a second mounting hole 32, that is, the first mounting hole 31 and the second mounting hole 32 are arranged alternately along the circumference of the outer ring 2, combined with the ribs 3 of the inner ring 2. Figure 2 As shown, the distance between the center of the second mounting hole 32 and the center of the inner ring 1 is greater than the distance between the center of the first mounting hole 31 and the center of the inner ring 1. Since the ribs 3 are an even number, the first mounting hole 31 and the second mounting hole 32 are also an even number, both of which are half the number of the ribs 3. The first mounting hole 31 or the second mounting hole 32 is used to connect the stator. Since the distance between the center of the second mounting hole 32 and the center of the inner ring 1 is greater than the distance between the center of the first mounting hole 31 and the center of the inner ring 1, the second mounting hole 32 is used to install a stator with a larger diameter, and the first mounting hole 31 is used to install a stator with a smaller diameter, that is, the same motor end cover can be used for the installation of two specifications of stators. When the stator diameter is changed, there is no need to replace the motor end cover, which reduces the material cost and labor design cost.
[0020] like Figure 2 As shown, the first mounting hole 31 is located on the rib 3 near the end of the outer ring 2, and the second mounting hole 32 is provided at the connection between the rib 3 and the outer ring 2. As one embodiment, the outer ring 2 includes a first outer ring portion 21 and a second outer ring portion 22, the axial width of the second outer ring portion 22 is smaller than the axial width of the first outer ring portion 21, and the second outer ring portion 22 is integrally formed in the middle of the outer peripheral surface of the first outer ring portion 21 along the circumferential direction, as shown in FIG. Figure 3As shown, the outer circumference of the two ends of the first outer ring portion 21 forms a first concave platform 211 and a second concave platform 212, and the second mounting hole 32 is provided at the connection between the rib 3 and the first outer ring portion 21. The first concave platform 211 is located on the same side of the motor end cover as the bearing mounting hole 11, and the first concave platform 211 is used to dock with the motor housing to form the stator and rotor mounting cavity, and the second boss 212 is used to dock with the electrical box of the motor. In other embodiments, in order to adapt to the stator with a large diameter, the size of the electrical box will also be increased accordingly, and the electrical box is directly sleeved on the outer circumference of the second outer ring portion 22, and then fixed by screws or bolts and other fixing parts.
[0021] Preferably, there are eight ribs 3, which are evenly arranged between the inner ring 1 and the outer ring 2 along the circumferential direction, that is, the eight ribs 3 are arranged axially symmetrically between the inner ring 1 and the outer ring 2. Such an arrangement improves the structural strength of the motor end cover and is not prone to deformation.
[0022] In order to reduce the weight of the motor end cover, each of the ribs 3 is provided with a weight reduction cavity 33, and the weight reduction cavity 33 extends along the radial direction of the outer ring 2. Furthermore, the weight reduction cavity 33 passes through the ribs 3 along the axial direction of the motor end cover, and the weight reduction effect is better.
[0023] In order to further enhance the structural strength of the motor end cover, the motor end cover further comprises an annular rib 4, wherein the annular rib 4 is located between the inner ring 1 and the outer ring 2, and the annular rib 4 connects an even number of the ribs 3 along the circumferential direction.
[0024] The utility model also provides a motor, comprising the motor end cover described above, and also comprising a motor housing, a stator and a rotor, wherein the motor housing and the motor end cover form a stator mounting cavity, the stator is located in the stator mounting cavity, the stator is connected to the motor end cover through the first mounting hole 31 or the second mounting hole 32, the rotor is located in the stator, one end of the rotor is mounted in the bearing mounting hole 11 through a first bearing, and the other end is mounted on the motor housing through a second bearing, and the rotor rotates relative to the stator, the motor end cover and the motor housing.
[0025] Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value. The above embodiments are only illustrative of the principles and effects of the utility model, and are not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.
Claims
1. A motor end cover, characterized in that: include An inner ring, one side of the inner ring is provided with a bearing mounting hole; An outer ring, the outer ring is located outside the inner ring, and the outer ring is concentric with the inner ring; An even number of ribs are connected between the inner ring and the outer ring, there are at least 4 ribs, and at least the 4 ribs extend radially along the outer ring. Among two adjacent ribs, one of the ribs is provided with a first mounting hole, and the other rib is provided with a second mounting hole. The distance between the center of the second mounting hole and the center of the inner ring is greater than the distance between the first mounting hole and the center of the inner ring. The first mounting hole or the second mounting hole is used to connect the stator.
2. A motor end cover according to claim 1, characterized in that: The first mounting hole is located on the rib near the end of the outer ring.
3. A motor end cover according to claim 2, characterized in that: The second mounting hole is arranged at the connection between the rib and the outer ring.
4. A motor end cover according to claim 3, characterized in that: There are eight ribs, which are evenly arranged along the circumferential direction between the inner ring and the outer ring.
5. A motor end cover according to any one of claims 1 to 4, characterized in that: A weight-reducing cavity is provided on each of the ribs, and the weight-reducing cavity extends along the radial direction of the outer ring.
6. A motor end cover according to claim 5, characterized in that: The weight-reducing cavity penetrates the rib along the axial direction of the motor end cover.
7. The motor end cover according to claim 5, characterized in that: The motor end cover also includes an annular rib, which is located between the inner ring and the outer ring, and the annular rib connects an even number of the ribs along the circumferential direction.
8. A motor end cover according to claim 7, characterized in that: The outer ring includes a first outer ring portion and a second outer ring portion, the axial width of the second outer ring portion is smaller than the axial width of the first outer ring portion, the second outer ring portion is integrally formed in the middle part of the outer peripheral surface of the first outer ring portion along the circumferential direction, and the outer peripheral surfaces of the two ends of the first outer ring portion form a first concave platform and a second concave platform.
9. A motor end cover according to claim 8, characterized in that: The second mounting hole is arranged at the connection between the rib and the first outer ring.
10. A motor, comprising the motor end cover according to any one of claims 1 to 9, characterized in that: Also included is a motor housing, wherein the motor housing and the end cover form a stator mounting cavity; A stator, wherein the stator is located in the stator mounting cavity, and the stator is connected to the motor end cover through the first mounting hole or the second mounting hole; A rotor is located in the stator, one end of the rotor is mounted in the bearing mounting hole through a first bearing, and the other end of the rotor is mounted on the motor housing through a second bearing.