Motor end cover

Abstract

The utility model discloses a motor end cover, comprising an end cover body, the end cover body is provided with a cavity, the end cover body is provided with a shaft hole, the shaft hole is communicated with the cavity, the end face of the end cover body is provided with a bearing, the bearing is provided with a bearing hole, and the bearing hole and the shaft hole are concentrically arranged. The end face is concave inwards to form a boss, the boss is arranged in the cavity, the shaft hole is formed in the boss, the end cover body is provided with a limiting piece, the limiting piece is provided with a through hole and an elastic pressing part, the pressing part limits the bearing on the boss, the bearing hole is formed in the through hole, the end cover body is provided with a fixing piece, and the fixing piece fixes the limiting piece on the end cover body. According to the utility model, the bearing can be stably fixed on the motor end cover, thereby preventing the bearing from generating stress to cause abrasion of the motor rotating shaft, and reducing noise.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to a motor end cover. Background Art

[0002] At present, motor end covers are generally arranged at both ends of the stator housing to fix and support the motor shaft so that the rotor on the shaft remains coaxial with the stator.

[0003] The prior art installs the bearing on the motor end cover. The motor bearing, also known as the electric motor bearing or motor bearing, is a special bearing used on the electric motor or motor. The bearing used in the motor is a part that supports the shaft. It can guide the rotation of the shaft and also bear the idling parts on the shaft. For example, a Chinese patent discloses an invention patent named a motor end cover and a three-phase motor with the motor end cover (application publication number: CN111953125A); another example is a Chinese patent discloses a utility model patent named a generator front end cover (authorization announcement number: CN202535187U).

[0004] When the motor is running, the motor shaft rotates, causing stress on the bearing. If the bearing is embedded in the notch of the motor end cover, it is easy to cause wear of the motor shaft and generate noise. Therefore, it is necessary to limit the bearing on the motor end cover. How to limit the bearing on the motor end cover is a technical problem that technicians in this field need to solve. Utility Model Content

[0005] The utility model aims to solve the above-mentioned technical problems existing in the prior art and provide a motor end cover, which can limit the bearing on the motor end cover, avoid stress on the bearing and cause wear of the motor shaft, and reduce noise.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The motor end cover comprises an end cover body, the end cover body is provided with a cavity, the end cover body is provided with an axial hole, the axial hole and the cavity are connected, the end face of the end cover body is provided with a bearing, the bearing is provided with a bearing hole, the bearing hole and the axial hole are concentrically arranged; the characteristics are: the end face is concave inward to form a boss, the boss is arranged in the cavity, the axial hole is opened on the boss, the end cover body is provided with a limiter, the limiter is provided with a through hole, the limiter is provided with an elastic clamping part, the clamping part limits the bearing on the boss, the bearing hole is arranged in the through hole, the end cover body is provided with a fixing part, and the fixing part fixes the limiter to the end cover body.

[0008] Furthermore, the limiting member is in a ring shape so that the limiting member wraps around the bearing, and a gap is provided between two adjacent clamping parts. The clamping parts can be deformed according to the shape of the bearing so that the clamping parts are bent and the clamping parts press the surface of the bearing, thereby improving the limiting effect of the limiting member on the bearing.

[0009] Furthermore, the limiting member and the pressing portion are an integrally formed structure, which has good integrity and is easy to manufacture by integral forming.

[0010] Furthermore, the fixing member adopts a pressing sheet, which is arranged on the end cover body and deforms on the end cover body so that the pressing sheet presses the limiting member, which can limit the bearing on the boss, and eliminates screws to reduce costs.

[0011] Furthermore, the end cover body is provided with a cutting opening to form a pressing sheet, and the pressing sheet and the end cover body are an integrally formed structure, so that the pressing sheet and the end cover body have good integrity, and the pressing sheet is easy to manufacture and can be formed quickly.

[0012] Furthermore, four cutting openings are evenly distributed circumferentially, so that the force exerted by the pressing sheet to press the limiting member is uniform.

[0013] Furthermore, the fixing part adopts a connecting buckle, and the connecting buckle is provided with an inner cavity and a connecting hole, the inner cavity and the connecting hole are connected, and the connecting buckle is fixed on the end face with a fixing screw, and the limiting part and the bearing are arranged in the inner cavity, so that the connecting buckle fixes the limiting part, and the clamping part and the bearing hole are arranged in the connecting hole, which can limit the bearing on the boss and protect the bearing, thereby increasing the service life of the bearing.

[0014] Furthermore, the fixing member adopts a pressure plate, which is provided with a second connecting hole. The pressure plate is fixed on the end cover body. The pressure plate presses the entire limiting member. The clamping part and the bearing hole are arranged in the second connecting hole. The bearing can be limited on the boss and the bearing can be protected, thereby increasing the service life of the bearing.

[0015] Furthermore, a connecting column is provided on the end face, a locking screw is threadedly connected to the connecting column, and the end of the locking screw presses the pressure plate, which is suitable for a motor end cover with a larger thickness.

[0016] Furthermore, the end cover body is provided with heat dissipation holes to improve the heat dissipation effect.

[0017] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0018] The utility model installs the bearing on the boss so that there is a certain distance between the bearing and the end face of the end cover body, thereby increasing the installation space for the bearing and limiting the bearing without being affected by the shape of the end face of the end cover body. The elastic pressing part on the limiter presses the surface of the bearing to limit the bearing on the boss, and then the limiter is fixed to the end cover body by a fixing part, so that the bearing can be firmly fixed on the motor end cover, avoiding stress on the bearing and causing wear of the motor shaft, and reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1This is a schematic diagram of the structure of the first embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the third embodiment of the present invention.

[0023] In the figure, 1-end cover body; 2-end face; 3-bearing; 4-boss; 5-limiting piece; 6-pressing part; 7-gap; 8-pressing sheet; 9-cutting opening; 10-bearing hole; 11-connecting buckle; 12-fixing screw; 13-pressing plate; 14-connecting column; 15-end; 16-heat dissipation hole; 17-clamping part; 18-reinforcement rib; 19-recessed part. DETAILED DESCRIPTION

[0024] like Figure 1 As shown, it is the first embodiment of the utility model.

[0025] The motor end cover comprises an end cover body 1, and the side and end surface 2 of the end cover body 1 can be provided with heat dissipation holes 16 to improve the heat dissipation effect. The end cover body 1 is provided with a cavity, and the end cover body 1 is provided with an axial hole, and the axial hole is connected with the cavity.

[0026] The end face 2 of the end cover body 1 is concave inward to form a boss 4, which is arranged in the cavity, and the shaft hole is opened on the boss 4. The end cover body 1 is provided with a stopper 5, which is in a ring shape so that the stopper 5 wraps the bearing 3, and the stopper 5 is provided with a through hole, and the stopper 5 is provided with an elastic clamping part 6. The stopper 5 and the clamping part 6 are an integrally formed structure with good integrity and convenient for integrally formed manufacturing. A gap 7 is provided between two adjacent clamping parts 6, and the clamping part 6 can be deformed according to the shape of the bearing 3, so that the clamping part 6 is bent, and the clamping part 6 presses the surface of the bearing 3, thereby improving the limiting effect of the stopper 5 on the bearing 3, and limiting the bearing 3 on the boss 4. The bearing 3 is provided with a bearing hole 10, and the bearing hole 10 is provided in the through hole so that the bearing hole 10 is exposed, and at the same time, the bearing hole 10 and the shaft hole are arranged concentrically. The end cover body 1 is provided with a fixing part, and the fixing part fixes the stopper 5 to the end cover body 1.

[0027] In the first embodiment, the fixing member adopts a pressing sheet 8. By setting the position of the end face 2 of the end cover body 1 and cutting a cutting opening 9 on the end cover body 1, a pressing sheet 8 can be formed on the end cover body 1. Then, the pressing sheet 8 on the end cover body 1 is deformed so that the pressing sheet 8 presses the limiting member 5. At this time, the pressing sheet 8 and the end cover body 1 are an integrally formed structure, so that the pressing sheet 8 and the end cover body 1 have good integrity, and the pressing sheet 8 is easy to manufacture and quickly formed. The first embodiment adopts four cutting openings 9 evenly distributed circumferentially, so that the force of the pressing sheet 8 pressing the limiting member 5 is uniform. This embodiment can limit the bearing 3 on the boss 4, and there is no need to use screws. The pressing sheet 8 is directly derived from the end cover body 1, which reduces costs and is suitable for aluminum alloy motor end covers.

[0028] In the first embodiment, a clamping portion 17 is provided at the corner of the end cover body 1. When the motor end cover and the housing are installed, the clamping portion 17 is clamped on the outside of the housing to improve the stability of the connection between the motor end cover and the housing.

[0029] like Figure 2 As shown, this is the second embodiment of the utility model.

[0030] The motor end cover comprises an end cover body 1, and the side and end surface 2 of the end cover body 1 can be provided with heat dissipation holes 16 to improve the heat dissipation effect. The end cover body 1 is provided with a cavity, and the end cover body 1 is provided with an axial hole, and the axial hole is connected with the cavity.

[0031] The end face 2 of the end cover body 1 is concave inward to form a boss 4, which is arranged in the cavity, and the shaft hole is opened on the boss 4. The end cover body 1 is provided with a stopper 5, which is in a ring shape so that the stopper 5 wraps the bearing 3, and the stopper 5 is provided with a through hole, and the stopper 5 is provided with an elastic clamping part 6. The stopper 5 and the clamping part 6 are an integrally formed structure with good integrity and convenient for integrally formed manufacturing. A gap 7 is provided between two adjacent clamping parts 6, and the clamping part 6 can be deformed according to the shape of the bearing 3, so that the clamping part 6 is bent, and the clamping part 6 presses the surface of the bearing 3, thereby improving the limiting effect of the stopper 5 on the bearing 3, and limiting the bearing 3 on the boss 4. The bearing 3 is provided with a bearing hole 10, and the bearing hole 10 is provided in the through hole so that the bearing hole 10 is exposed, and at the same time, the bearing hole 10 and the shaft hole are arranged concentrically. The end cover body 1 is provided with a fixing part, and the fixing part fixes the stopper 5 to the end cover body 1.

[0032] In the second embodiment, the fixing member adopts a connecting buckle 11, and the connecting buckle 11 is provided with an inner cavity and a connecting hole 1, the inner cavity and the connecting hole 1 are connected, and the connecting buckle 11 is fixed on the end face 2 by three fixing screws 12, and the limiting member 5 and the bearing 3 are arranged in the inner cavity, so that the connecting buckle 11 fixes the limiting member 5, and the clamping part 6 and the bearing hole 10 are arranged in the connecting hole 1. At this time, the thickness of the connecting buckle 11 is relatively thin, which can limit the bearing 3 on the boss 4, and it also protects the bearing 3, thereby increasing the service life of the bearing 3, and is suitable for the motor end cover of aluminum alloy.

[0033] like Figure 3 As shown, it is the third embodiment of the utility model.

[0034] The motor end cover comprises an end cover body 1, and the side and end surface 2 of the end cover body 1 can be provided with heat dissipation holes 16 to improve the heat dissipation effect. The end cover body 1 is provided with a cavity, and the end cover body 1 is provided with an axial hole, and the axial hole is connected with the cavity.

[0035] The end face 2 of the end cover body 1 is concave inward to form a boss 4, which is arranged in the cavity, and the shaft hole is opened on the boss 4. The end cover body 1 is provided with a stopper 5, which is in a ring shape so that the stopper 5 wraps the bearing 3, and the stopper 5 is provided with a through hole, and the stopper 5 is provided with an elastic clamping part 6. The stopper 5 and the clamping part 6 are an integrally formed structure with good integrity and convenient for integrally formed manufacturing. A gap 7 is provided between two adjacent clamping parts 6, and the clamping part 6 can be deformed according to the shape of the bearing 3, so that the clamping part 6 is bent, and the clamping part 6 presses the surface of the bearing 3, thereby improving the limiting effect of the stopper 5 on the bearing 3, and limiting the bearing 3 on the boss 4. The bearing 3 is provided with a bearing hole 10, and the bearing hole 10 is provided in the through hole so that the bearing hole 10 is exposed, and at the same time, the bearing hole 10 and the shaft hole are arranged concentrically. The end cover body 1 is provided with a fixing part, and the fixing part fixes the stopper 5 to the end cover body 1.

[0036] In the third embodiment, the fixing member adopts a pressure plate 13 of a certain thickness, and the pressure plate 13 has good strength. The pressure plate 13 is provided with a second connection hole, and the pressure plate 13 is fixed on the end cover body 1. The pressure plate 13 presses the entire limiter 5. The clamping part 6 and the bearing hole 10 are arranged in the second connection hole, which can limit the bearing 3 on the boss 4, and protect the bearing 3, thereby increasing the service life of the bearing 3, and is suitable for the motor end cover of the cast iron. The pressure plate 13 is provided with an inner concave part 19, and the inner concave part 19 can better press the clamping part 6.

[0037] The end surface 2 of the end cover body 1 is provided with a connecting column 14, and the connecting column 14 is threadedly connected with a locking screw, and the end 15 of the locking screw presses the pressing plate 13, which is suitable for motor end covers with larger thickness.

[0038] In the third embodiment, the heat dissipation hole 16 is large in size, and the strength of the end surface 2 needs to be increased. A reinforcing rib 18 is provided on the end surface 2 to increase the strength.

[0039] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A motor end cover, comprising an end cover body, wherein the end cover body is provided with a cavity, the end cover body is provided with an axial hole, the axial hole is communicated with the cavity, the end surface of the end cover body is provided with a bearing, the bearing is provided with a bearing hole, and the bearing hole and the axial hole are concentrically arranged; Features: The end surface is concave inward to form a boss, the boss is arranged in the cavity, the axial hole is opened on the boss, the end cover body is provided with a limiter, the limiter is provided with a through hole, the limiter is provided with an elastic clamping portion, the clamping portion limits the bearing on the boss, the bearing hole is arranged in the through hole, the end cover body is provided with a fixing member, and the fixing member fixes the limiter to the end cover body.

2. The motor end cover according to claim 1, characterized in that: The limiting member is in a ring shape so that the limiting member wraps around the bearing, and a gap is provided between two adjacent pressing parts so that the pressing parts are bent to press the bearing.

3. The motor end cover according to claim 1, characterized in that: The limiting member and the pressing portion are an integrally formed structure.

4. The motor end cover according to claim 1, characterized in that: The fixing member is a pressing sheet, which is arranged on the end cover body and deforms on the end cover body so that the pressing sheet presses the limiting member.

5. The motor end cover according to claim 4, characterized in that: The end cover body is provided with a cutting opening to form the pressing sheet, and the pressing sheet and the end cover body are an integrally formed structure.

6. The motor end cover according to claim 5, characterized in that: The four cutting openings are evenly distributed around the circumference.

7. The motor end cover according to claim 1, characterized in that: The fixing member adopts a connecting buckle, and the connecting buckle is provided with an inner cavity and a connecting hole. The inner cavity and the connecting hole are communicated with each other. The connecting buckle is fixed to the end surface with a fixing screw. The limiting member and the bearing are arranged in the inner cavity, so that the connecting buckle fixes the limiting member, and the clamping part and the bearing hole are arranged in the connecting hole.

8. The motor end cover according to claim 1, characterized in that: The fixing member adopts a pressing plate, the pressing plate is provided with a second connecting hole, the pressing plate is fixed on the end cover body, the pressing plate presses the entire limiting member, and the pressing part and the bearing hole are arranged in the second connecting hole.

9. The motor end cover according to claim 8, characterized in that: The end surface is provided with a connecting column, the connecting column is threadedly connected with a locking screw, and the end of the locking screw presses the pressing plate.

10. The motor end cover according to claim 1, characterized in that: The end cover body is provided with heat dissipation holes.

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