CN216086371U

CN216086371U - Motor rear end cover structure and motor

Info

Publication number: CN216086371U
Application number: CN202122284277.XU
Authority: CN
Inventors: 宁慧敏; 路绪超; 赵守益
Original assignee: Zhejiang Kening Motor Co ltd
Current assignee: Zhejiang Kening Motor Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-03-18
Anticipated expiration: 2031-09-22

Abstract

The utility model relates to the technical field of motors, in particular to a motor rear end cover structure and a motor. In the patent, the rear support is made of aluminum, and the rear end cover is made of iron, so that the cost is directly and effectively reduced; the flexible cushion layer is blocked between the bearing and the side wall of the bearing chamber, so that good damping and noise reduction effects are achieved; the heat on the rear end cover can be conducted to the heat dissipation cushion layer, the heat dissipation cushion layer is close to the central through hole, the heat can be conveniently conducted to the air, and a good heat dissipation effect is achieved.

Description

Motor rear end cover structure and motor

Technical Field

The utility model relates to the technical field of motors, in particular to a motor rear end cover structure and a motor.

Background

With the development of industrialization, motors are widely applied in production and life, in order to adapt to diversified industrial production, the types of the motors are more and more, and the motor end cover bracket is more and more used as a bearing body structure of the motor. The motor body comprises parts such as a stator assembly, a rotor assembly and a rotating shaft, end covers are required to be installed at two ends of the motor body, and the motor is generally installed in the equipment by fixing the support on the two end covers. The motor structure of the drum washing machine disclosed in the chinese patent with the application number of 202022268483.7 comprises a plastic package stator, a front end cover mounted at the front end of the plastic package stator, and a rear mounting bracket mounted at the rear end of the plastic package stator, wherein the rear mounting bracket comprises a rear end plate, a rear sleeve portion extending from the edge of the rear end plate along the axial direction of the rear mounting bracket, and two rear mounting legs, the rear end plate in the rear mounting bracket is used for being mounted at the rear end of the plastic package stator, the rear mounting legs are used for fixing, the functional effects of the rear mounting legs are different, different requirements are met in the aspects of material selection, and the like, but the two integrated designs only can select the same material during manufacturing, and cannot be selectively processed and manufactured, so that the waste of resources is caused.

SUMMERY OF THE UTILITY MODEL

The utility model improves the technical problem, namely, the technical scheme provided by the utility model is that the rear end cover structure of the motor comprises a rear end cover and a rear support, the rear end cover is detachably and fixedly connected with the rear support, the rear end cover comprises a bearing chamber for mounting a bearing, a first annular groove is formed in the side wall of the bearing chamber, a flexible cushion layer is arranged in the first annular groove, a first central through hole and a second annular groove surrounding the first central through hole are formed in the bottom surface of the bearing chamber, a heat dissipation cushion layer is arranged in the second annular groove, and the heat conductivity coefficient of the heat dissipation cushion layer is higher than that of the rear end cover.

Preferably, the second annular groove communicates with the first central through hole.

Preferably, the rear bracket includes a heat conducting mounting plate fixedly connected to the rear end cover, a support plate fixed to the heat conducting mounting plate, and a support leg fixed to the support plate, wherein the heat conducting mounting plate has a higher thermal conductivity than the rear end cover.

Preferably, the heat conducting mounting plate is attached to the rear end cap at a surface facing the rear end cap.

Preferably, the heat conducting mounting plate has a second central through hole in the middle, and the second central through hole and the first central through hole are both circular through holes and are coaxial.

Preferably, the heat conducting mounting plate is provided with a plurality of first reinforcing ribs on a surface back to the rear end cover.

Preferably, a part of the first reinforcing ribs extends to the support plate and is fixedly connected with the support plate.

Preferably, the heat-conducting mounting plate is provided with at least two positioning protrusions on a surface facing the rear end cover, the rear end cover is provided with positioning grooves into which the positioning protrusions are inserted, and the heat-conducting mounting plate is provided with a plurality of bolt mounting holes.

Preferably, a sound insulation cushion is disposed between the rear end cap and the heat conduction mounting plate.

The motor comprises a motor rear end cover structure and a stator assembly, wherein the motor rear end cover structure is fixedly arranged on the stator assembly through the rear end cover.

Has the advantages that:

the rear bracket is made of aluminum, and the rear end cover is made of iron, so that the cost is directly and effectively reduced; the flexible cushion layer is blocked between the bearing and the side wall of the bearing chamber, so that good damping and noise reduction effects are achieved; the heat on the rear end cover can be conducted to the heat dissipation cushion layer, the heat dissipation cushion layer is close to the central through hole, the heat can be conveniently conducted to the air, and a good heat dissipation effect is achieved.

Drawings

Fig. 1 is a schematic perspective view of a rear end cover structure of a motor according to the present invention;

FIG. 2 is a schematic perspective view of the rear end cap;

FIG. 3 is a schematic view of the structure of the bearing chamber;

FIG. 4 is a schematic structural view of the heat conducting mounting plate;

FIG. 5 is a schematic view of the positioning bosses and the bolt mounting holes on the thermally conductive mounting plate;

FIG. 6 is a schematic diagram of the components of an electric motor according to the present invention;

in the figure: a. rear end cover structure, b, stator module, c, front end cover, 1, rear end cover, 11, bearing chamber, 12, first central through hole, 13, locating hole, 111, first annular groove, 112, second annular groove, 2, rear support, 21, heat conduction mounting panel, 22, backup pad, 23, stabilizer blade, 211, first strengthening rib, 212, location arch, 213, bolt mounting hole, 214, second central through hole.

Detailed Description

The following specific examples are given by way of illustration only and not by way of limitation, and it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made in the examples without inventive faculty, and yet still be protected by the scope of the claims.

Fig. 1 shows a rear end cover structure of a motor according to the present invention, which includes a rear end cover 1 and a rear bracket 2, where the rear end cover 1 and the rear bracket 2 are detachably and fixedly connected, and the rear end cover 1 and the rear bracket 2 are separately processed and manufactured and then spliced and combined, so that the rear end cover 1 and the rear bracket 2 may be made of different materials, in this embodiment, it is preferable that the rear bracket 2 is made of an aluminum material, and the rear end cover 1 is made of an iron material, so that cost reduction is directly and effectively achieved. However, after the cost is reduced, the iron material adopted by the rear end cover 1 is inferior to the aluminum material in terms of heat conductivity, and the iron rear end cover is easier to generate noise when being used after being installed on a motor than the aluminum rear end cover, the rear end cover 1 comprises a bearing chamber 11 for installing a bearing, and the generation of heat and noise also occurs in the bearing chamber 11 when the rear end cover 1 is used; therefore, in the embodiment, the side wall of the bearing chamber 11 is provided with the first annular groove 111, the first annular groove 111 is provided with the flexible cushion layer, the flexible cushion layer is in an annular structure, and when the bearing is installed in the bearing chamber 11, the flexible cushion layer is blocked between the bearing and the side wall of the bearing chamber 11, so that a good damping and noise reduction effect is achieved; in addition, this embodiment is in first central through-hole 12 and encircleing have been seted up to the bottom surface of bearing chamber 11 the second annular groove 112 of first central through-hole 12, be provided with the heat dissipation bed course in the second annular groove 112, the coefficient of heat conductivity of heat dissipation bed course is higher than rear end cap 1, and the heat on the rear end cap 1 can be to the conduction of heat dissipation bed course like this, and the heat dissipation bed course is close to first central through-hole 12, is convenient for pass to the air with the heat in, plays good radiating effect. The flexible cushion layer is preferably made of rubber, and the heat dissipation cushion layer is preferably made of aluminum.

Since the bottom surface of the bearing housing 11 is provided with the first central through hole 12, preferably, the first central through hole 12 is a circular hole, the bottom surface of the bearing housing 11 actually exists is an annular surface, and the second annular groove 112 surrounding the first central through hole 12 is provided on the annular surface. In the first embodiment, the second annular groove 112 is coaxial with the first central through hole 12, and the diameter of the inner ring edge of the second annular groove 112 is larger than that of the first central through hole 12, so that there is a barrier between the second annular groove 112 and the first central through hole 12, but the heat dissipation cushion has better clamping firmness in the second annular groove 112; in the second embodiment, the second annular groove 112 is coaxial with the first central through hole 12, and the diameter of the inner ring edge of the second annular groove 112 is equal to the diameter of the first central through hole 12, that is, the second annular groove 112 is communicated with the first central through hole 12, so that there is no barrier between the heat dissipation cushion clamped in the second annular groove 112 and the first central through hole 12, and the heat dissipation cushion can directly transfer heat to the air, thereby improving the heat dissipation effect. This embodiment is preferred to the second embodiment described above.

Fig. 1 shows that the rear bracket 2 includes a heat conducting mounting plate 21 fixedly connected to the rear end cover 1, a support plate 22 fixed to the heat conducting mounting plate 21, and a leg 23 fixed to the support plate 22, and the structures of the support plate 22 and the leg 23 are very common in the prior art and will not be described in detail here. In this embodiment the heat conduction mounting panel 21 is installed on the rear end cap 1, and the coefficient of heat conductivity of the heat conduction mounting panel 21 is higher than the rear end cap 1, just so make in the rear end cap 1 can be conducted the after-poppet 2 through the body of the rear end cap 1 by the heat that produces in the bearing chamber on, during rethread after-poppet 2 conducts the air for the radiating efficiency improves the radiating effect. Specifically, the foregoing has been replaced in the present embodiment that the rear bracket 2 is made of aluminum material, the rear end cover 1 is supported by iron material, the thermal conductivity of the aluminum material is higher than that of the iron material, and the heat dissipation effect of the aluminum material is better than that of the iron material. In a further improvement, the surface of the heat conducting and mounting plate 21 facing the rear end cover 1 abuts against the rear end cover 1, and the contact area between the heat conducting and mounting plate 21 and the rear end cover 1 is increased to improve the heat dissipation effect.

Because the existence of heat dissipation bed course and first central through-hole 12, the regional heat in middle part of rear end cap 1 mainly conducts towards the central zone at heat dissipation bed course place to can conduct in the air, so this embodiment is preferred heat conduction mounting panel 21 middle part has second central through-hole 214, and second central through-hole 214 with first central through-hole 12 all is circular through-hole and both coaxial, promptly heat conduction mounting panel 21 is the loop configuration, like this when heat conduction mounting panel 21 installs back on rear end cap 1, heat conduction mounting panel 21 pastes through annular face and leans on in rear end cap 1 region all around, heat conduction mounting panel 21 mainly dispels the heat to rear end cap 1's region all around, directly processes heat conduction mounting panel 21 into the loop configuration man-hour, has reduced the aluminum product quantity, has effectively reduced the cost. In addition, the second center through hole 214 is coaxial with the first center through hole 12, so that the mounting accuracy of the whole rear bracket can be checked by judging the concentricity between the heat conduction mounting plate 21 and the rear end cover 1 after the heat conduction mounting plate is mounted on the rear end cover 1, and the position accuracy of the support leg 23 in the rear bracket 2 can be ensured.

Further improve, this embodiment is preferred that the face of the heat conduction mounting plate 21 back to the rear end cover 1 is provided with a plurality of first reinforcing ribs 211, so that the strength of the heat conduction mounting plate 21 itself is improved, under this premise, the thickness of the heat conduction mounting plate 21 can be properly reduced, the cost is further reduced by reducing the use amount of aluminum material, meanwhile, the conduction path of heat in the heat conduction mounting plate 21 is reduced, and the heat dissipation efficiency is further improved. In a further improvement, preferably, a part of the first reinforcing ribs 211 extends to the support plate 22 and is fixedly connected with the support plate 22, and these first reinforcing ribs 211 not only can improve the connection strength between the support plate 22 and the heat conducting and mounting plate 21, but also can be used as a path for conducting part of heat on the heat conducting and mounting plate 21 to the support plate 22, and because the whole rear bracket 2 is made of aluminum material, the support plate 22 can also have the effect of increasing the heat dissipation efficiency.

The rear bracket 2 is detachably fixed on the rear end cover 1 through the heat conducting mounting plate 21, in this embodiment, it is preferable that the heat conducting mounting plate 21 is provided with at least two positioning protrusions 212 on a surface facing the rear end cover 1, the rear end cover 1 is provided with positioning holes 13 for inserting the positioning protrusions 212, and the heat conducting mounting plate 21 is provided with a plurality of bolt mounting holes 213. When the rear bracket 2 is installed, the positioning protrusion 212 is first inserted into the positioning hole 13 to fix and position the rear bracket 2, and then a bolt is inserted into the rear end cover 1 through the bolt mounting hole 213 to fix the rear bracket. In a further improvement, a sound insulation cushion layer, such as sound insulation cotton, may be further disposed between the rear end cap 1 and the heat conduction mounting plate 21, so as to improve the noise reduction effect.

The motor comprises a motor rear end cover structure a and a stator assembly b, wherein the motor rear end cover structure a is fixedly arranged on the stator assembly b through a rear end cover 1, parts necessary for motor operation, such as a rotor assembly and a rotating shaft, are arranged in the stator assembly b, a front end cover c is arranged at the other end of the stator assembly b, and a bearing is arranged in a bearing chamber of the rear end cover 1.

While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a motor rear end cap structure, its characterized in that, includes rear end cap (1) and after-poppet (2), rear end cap (1) with the dismantled and assembled fixed connection of after-poppet (2), bearing chamber (11) of rear end cap (1) including being used for supplying the bearing installation, first annular groove (111) have been seted up on the lateral wall of bearing chamber (11), be provided with flexible bed course in first annular groove (111), first central through-hole (12) and encircleing have been seted up to the bottom surface of bearing chamber (11) second annular groove (112) of first central through-hole (12), be provided with the heat dissipation bed course in second annular groove (112), the coefficient of heat conductivity of heat dissipation bed course is higher than after-poppet (1).

2. An electric machine rear end cap arrangement according to claim 1, characterized in that the second annular groove (112) communicates with the first central through hole (12).

3. An electric machine rear end cap structure according to claim 2, characterized in that the rear bracket (2) comprises a heat conducting mounting plate (21) fixedly connected to the rear end cap (1), a support plate (22) fixed to the heat conducting mounting plate (21), and a support leg (23) fixed to the support plate (22), wherein the heat conducting mounting plate (21) has a higher thermal conductivity than the rear end cap (1).

4. An electric machine rear end cap structure according to claim 3, characterized in that the heat conducting mounting plate (21) abuts against the rear end cap (1) on the side facing the rear end cap (1).

5. An electric machine rear end cap structure according to claim 4, characterized in that the heat conducting mounting plate (21) has a second central through hole (214) in the middle, and the second central through hole (214) and the first central through hole (12) are both circular through holes and are coaxial.

6. An electric machine rear end cap structure according to claim 5, characterized in that the heat conducting mounting plate (21) is provided with a plurality of first reinforcing ribs (211) on the surface facing away from the rear end cap (1).

7. The rear end cover structure of the motor according to claim 6, wherein a part of the first reinforcing ribs (211) extend to the support plate (22) and are fixedly connected with the support plate (22).

8. The motor rear end cover structure according to claim 7, wherein at least two positioning protrusions (212) are arranged on the surface of the heat conduction mounting plate (21) facing the rear end cover (1), positioning holes (13) for the positioning protrusions (212) to insert are arranged on the rear end cover (1), and a plurality of bolt mounting holes (213) are arranged on the heat conduction mounting plate (21).

9. An electric machine rear end cap structure according to claim 8, characterized in that a sound insulating cushion is provided between the rear end cap (1) and the heat conducting mounting plate (21).

10. An electric machine, comprising an electric machine back end cap structure (a) according to any of claims 1-9, and further comprising a stator assembly (b), wherein the electric machine back end cap structure (a) is fixedly mounted on the stator assembly (b) through the back end cap (1).