Motor driving part assembling device

Abstract

The utility model discloses a motor driving part assembling device, and aims to solve the problems that the bearing fixing mode of the existing motor is easy to generate resonance and loud in noise in the operation process, the fixing structure is complicated, the production efficiency is lower, and the cost is higher. The device comprises an end cover and a bearing, an installation hole is formed in the end cover, an elastic straining ring is installed in the installation hole, an outer ring of the bearing is installed in the elastic straining ring in an interference mode, the elastic straining ring is used for applying radial pressure to the bearing, and the upper surface of the outer ring of the bearing is in contact with a bearing pressing ring. And the outer surface of the bearing pressing ring is in interference fit with the inner wall of the mounting hole. The bearing is limited in the radial direction and the axial direction through the elastic straining ring and the bearing pressing ring, so that the bearing is fixed through a simple structure, meanwhile, the elastic straining ring is a corrugated metal belt, ten clamping jaws are arranged on the bearing pressing ring, machining is convenient, assembling is easy, production efficiency is high, and cost is saved.

Description

Technical Field

[0001] The utility model belongs to the field of electromechanical technology, and in particular relates to a motor drive component assembly device. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for product quality. Currently, electric products on the market are inseparable from motor components. The motor will produce noise when working. As the motor works for a long time, the sound will become rougher and rougher, affecting the user's use.

[0003] Bearings are widely used rotating components in motors and are generally installed between the shaft and the end cover. Existing motors usually include bearings and bearing pressure rings. Usually, the bearings are axially limited by pressure rings or by riveting of bearing pressure rings. With this fixing method, the motor is prone to resonance and high noise during operation. At the same time, the fixing structure is complex, the production efficiency is low, and the cost is high. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide a motor drive component assembly device, which aims to solve the problems of the existing motor bearing fixing method, which is prone to resonance and loud noise during operation, and has a complex fixing structure, low production efficiency and high cost.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a motor drive component assembly device, which includes an end cover and a bearing, the end cover is provided with a mounting hole, an elastic tight ring is installed inside the mounting hole, the outer ring of the bearing is interference mounted inside the elastic tight ring, the elastic tight ring is used to apply radial pressure to the bearing, the upper surface of the outer ring of the bearing is in contact with a bearing pressure ring, the outer surface of the bearing pressure ring is interference fit with the inner wall of the mounting hole, and the bearing pressure ring is used to apply axial pressure to the bearing.

[0008] Preferably, the elastic tight ring is formed by winding an elastic metal, and a plurality of corrugated protrusions are formed on the inner wall of the elastic tight ring, and the corrugated protrusions are interference fit with the outer surface of the bearing.

[0009] Furthermore, the corrugated protrusion is integrally stamped from elastic metal.

[0010] Furthermore, the elastic tight ring is provided with an opening.

[0011] Furthermore, the bearing pressure ring includes an annular end face, the outer surface of the annular end face is fixedly connected with a plurality of claws, the claws include a parallel portion and an extension portion, the extension portion is arranged at an angle, the annular end face, the bearing and the mounting hole are arranged coaxially, the parallel portion is in contact with the outer ring of the bearing, and the extension portion is interference fit with the inner wall of the mounting hole.

[0012] Furthermore, the annular end face is in a conical shape, and the cross-section of the annular end face and the extension portion is a V-shaped structure.

[0013] Furthermore, a pressure plate is fixedly connected to the outer surface of the annular end surface and between two adjacent parallel portions.

[0014] Beneficial Effects

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] In the utility model, the bearing and the elastic retaining ring are accommodated in the mounting hole on the motor mounting end cover, the outer ring of the bearing and the corrugated protrusion on the inner wall of the elastic retaining ring are interference fit, and cooperate with the inner hole of the mounting hole on the end cover, so as to radially fix the bearing, the extension part on the bearing pressing ring has slight elasticity, and after being installed in the mounting hole, the parallel part contacts with the outer volume of the bearing, and the extension part is interference fit with the inner wall of the mounting hole at this time, so that the bearing is axially limited by the ten claws on the bearing pressing ring, which not only reduces the resonance generated when the motor is working, but also can slow down the vibration impact and eliminate noise.

[0017] The utility model limits the bearing radially and axially through the elastic tight ring and the bearing pressure ring, so that the bearing is fixed through a simple structure. At the same time, the elastic tight ring is a corrugated metal belt, and ten claws are arranged on the bearing pressure ring. It is not only convenient to process and assemble, but also has high production efficiency and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0020] Figure 3 It is a front view cross-sectional structural schematic diagram of the utility model;

[0021] Figure 4 It is an enlarged cross-sectional structural schematic diagram of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the elastic tight ring of the utility model;

[0023] Figure 6It is a structural schematic diagram of the bearing pressure ring of the utility model;

[0024] The markings in the accompanying drawings are: 1, end cover; 2, bearing; 3, mounting hole; 4, elastic tightening ring; 5, bearing pressure ring; 401, corrugated protrusion; 402, opening; 501, annular end face; 502, parallel part; 503, extension part; 504, pressure plate. DETAILED DESCRIPTION

[0025] This specific embodiment is a motor drive component assembly device, and its structural schematic diagram is as follows Figure 1-Figure 6 As shown, the device includes an end cover 1 and a bearing 2. The end cover 1 is provided with a mounting hole 3, which is in the shape of a step groove. Due to the installation of the bearing 2, an elastic tight ring 4 is installed inside the mounting hole 3. The outer ring of the bearing 2 is interference-fitted inside the elastic tight ring 4. The elastic tight ring 4 is used to apply radial pressure to the bearing 2. The upper surface of the outer ring of the bearing 2 is in contact with a bearing pressure ring 5. The outer surface of the bearing pressure ring 5 is interference-fitted with the inner wall of the mounting hole 3. The bearing pressure ring 5 is used to apply axial pressure to the bearing 2.

[0026] like Figure 2 and Figure 5 As shown: In this embodiment, the elastic tight ring 4 is formed by winding elastic metal, and the inner wall of the elastic tight ring 4 is formed with a plurality of corrugated protrusions 401 , and the corrugated protrusions 401 are interference fit with the outer surface of the bearing 2 .

[0027] The elastic tight ring 4 is set as a corrugated metal belt, which is used to produce an interference fit between two cylindrical objects. The corrugations act like a spring to fix the two objects together. The corrugations on the corrugated metal belt are the corrugated protrusions 401. When in use, the elastic force of the elastic tight ring 4 is used to make it interference-mounted in the mounting hole 3, and then the bearing 2 is installed in the elastic tight ring 4. At this time, the elastic force of the corrugated protrusions 401 makes the bearing 2 interference-mounted in the elastic tight ring 4, and the corrugated protrusions 401 can also be used for torque control and can provide overload protection against torque slip.

[0028] like Figure 5 As shown: In this embodiment, the corrugated protrusion 401 is stamped integrally from elastic metal, so that the elastic tight ring 4 and the corrugated protrusion 401 are more convenient to process and form, and the cost is also low.

[0029] like Figure 2 and Figure 5 As shown: In this embodiment, an opening 402 is provided on the elastic tight ring 4.

[0030] In this way, when external force is applied to the elastic tight ring 4, the opening 402 will become smaller, and the elastic tight ring 4 will shrink and become smaller. After the elastic tight ring 4 is installed in the mounting hole 3, the external force is removed. At this time, the restoring force of the elastic tight ring 4 makes it interference fit in the mounting hole 3, thereby preventing the elastic tight ring 4 from falling off.

[0031] like Figure 4 and Figure 6 As shown: In this embodiment, the bearing pressure ring 5 includes an annular end face 501, and a plurality of claws are fixedly connected to the outer surface of the annular end face 501. The claws include a parallel portion 502 and an extension portion 503. The extension portion 503 is arranged at an angle. The annular end face 501, the bearing 2 and the mounting hole 3 are arranged coaxially. The parallel portion 502 contacts the outer ring of the bearing 2, and the extension portion 503 is interference fit with the inner wall of the mounting hole 3.

[0032] In this way, the number of claws is preferably ten, the bearing pressure ring 5, the ten claws, the bearing 2 and the mounting hole 3 are concentrically designed, and the ten claws are interference fit with the mounting hole 3, and the bearing pressure ring 5 and the ten claws are evenly distributed along the center, so that uniform force can be ensured;

[0033] When in use, the extension portion 503 on the bearing pressure ring 5 has a slight elasticity. After being installed in the mounting hole 3, the parallel portion 502 contacts the outer roll of the bearing 2. At this time, the extension portion 503 has an interference fit with the inner wall of the mounting hole 3 to prevent the bearing pressure ring 5 from moving in the mounting hole 3.

[0034] like Figure 3 and Figure 4 As shown: In this embodiment, the annular end surface 501 is in a cone shape, and the cross section of the annular end surface 501 and the extension portion 503 is a V-shaped structure.

[0035] Such an arrangement can ensure that the annular end surface 501 does not contact the inner roll of the bearing 2 , so that the parallel portion 502 can better press the outer roll end surface of the bearing 2 .

[0036] like Figure 6 As shown: In this embodiment, a pressure plate 504 is fixedly connected to the outer surface of the annular end surface 501 and located between two adjacent parallel portions 502 .

[0037] Such arrangement can increase the contact area between the pressure plate 504 and the outer ring of the bearing 2, so that the bearing pressure ring 5 can better fit with the outer roll end surface of the bearing 2 to prevent sliding.

[0038] Working principle: When in use, after applying external force to the elastic tight ring 4, the opening 402 will become smaller, and the elastic tight ring 4 will shrink and become smaller. After the elastic tight ring 4 is installed in the mounting hole 3, the external force is removed. At this time, the restoring force of the elastic tight ring 4 makes it interference-fitted in the mounting hole 3, and then the bearing 2 is installed in the elastic tight ring 4. At this time, the elastic force of the corrugated protrusion 401 makes the bearing 2 interference-fitted in the elastic tight ring 4, and the corrugated protrusion 401 can also be used for torque control and can provide overload protection for torque slip;

[0039] Since the elastic tightening ring 4 adopts an elastic gasket, vibration impact can be reduced. The bearing 2 and the elastic tightening ring 4 are accommodated in the mounting hole 3 on the motor mounting end cover 1. The outer ring of the bearing 2 and the corrugated protrusion 401 on the inner wall of the elastic tightening ring 4 are interference fit, and cooperate with the inner hole of the mounting hole 3 on the end cover 1, so as to radially fix the bearing 2. The extension part 503 on the bearing pressing ring 5 has a slight elasticity. After being installed in the mounting hole 3, the parallel part 502 contacts the outer roll of the bearing 2. The extension part 503 is now interference fit with the inner wall of the mounting hole 3, so that the bearing 2 is axially limited by the ten claws on the bearing pressing ring 5, thereby reducing the resonance generated when the motor is working.

[0040] All technical features in this embodiment can be freely combined according to actual needs.

[0041] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A motor drive component assembly device, comprising an end cover (1) and a bearing (2), characterized in that: The end cover (1) is provided with a mounting hole (3), an elastic ring (4) is installed inside the mounting hole (3), the outer ring of the bearing (2) is interference-fitted inside the elastic ring (4), the elastic ring (4) is used to apply radial pressure to the bearing (2), the upper surface of the outer ring of the bearing (2) is in contact with a bearing pressure ring (5), the outer surface of the bearing pressure ring (5) is interference-fitted with the inner wall of the mounting hole (3), and the bearing pressure ring (5) is used to apply axial pressure to the bearing (2).

2. The motor drive component assembly device according to claim 1, characterized in that: The elastic tight ring (4) is formed by winding an elastic metal, and a plurality of corrugated protrusions (401) are formed on the inner wall of the elastic tight ring (4), and the corrugated protrusions (401) are interference fit with the outer surface of the bearing (2).

3. The motor drive component assembly device according to claim 2, characterized in that: The corrugated protrusion (401) is integrally stamped from elastic metal.

4. The motor drive component assembly device according to claim 2, characterized in that: The elastic tight ring (4) is provided with an opening (402).

5. The motor drive component assembly device according to claim 1, characterized in that: The bearing pressure ring (5) includes an annular end face (501), the outer surface of the annular end face (501) is fixedly connected with a plurality of claws, the claws include a parallel portion (502) and an extension portion (503), the extension portion (503) is arranged at an angle, the annular end face (501), the bearing (2) and the mounting hole (3) are arranged coaxially, the parallel portion (502) is in contact with the outer ring of the bearing (2), and the extension portion (503) is interference fit with the inner wall of the mounting hole (3).

6. The motor drive component assembly device according to claim 5, characterized in that: The annular end surface (501) is in a conical shape, and the cross-section of the annular end surface (501) and the extension portion (503) is a V-shaped structure.

7. The motor drive component assembly device according to claim 6, characterized in that: A pressure plate (504) is fixedly connected to the outer surface of the annular end surface (501) and is located between two adjacent parallel portions (502).

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