CN209896842U - Motor with play adjusting structure - Google Patents

Abstract

The utility model discloses a transfer motor of drunkenness structure, including rotor subassembly and front end housing, the rotor subassembly includes that pivot and fixed cover are established change epaxial rotor core, the front end housing include the front bearing room with set up in the indoor bearing of front bearing, the pivot with the bearing connects and connects, the rotor subassembly still includes fixed cover and establishes change epaxial last copper sheathing and lower copper sheathing, go up the copper sheathing with the copper sheathing is located respectively down the bearing both sides, just the copper sheathing is located down the bearing with between the rotor core, go up copper sheathing, bearing, lower copper sheathing and rotor core top-down supports tightly each other in proper order. The utility model discloses can ensure that rotor core axle clearance size is accurate, production efficiency is high, assembly process is simple, practice thrift cost, process easily control during motor assembly to the uniformity of drunkenness data is stable.

Description

Motor with play adjusting structure

Technical Field

The utility model relates to a motor production technical field, in particular to transfer motor of drunkenness structure.

Background

Axial play refers to the inevitable small movement of the rotating shaft of the motor in the axial direction during operation. Generally, the clearance fit between the rotating shaft and the rotor core is too large, and the motor moves to enlarge the clearance of a joint part which is not in relative motion originally, so that the vibration and the noise of the motor are increased, equipment is damaged, and the service life is shortened.

The existing motor generally limits the axial movement of a rotor core in a mode of a gasket or a wave washer and the like for controlling the axial movement, but the mode is adjusted by controlling the quantity of the gasket or the washer, so that the axial gap size is unstable, the operation is complex, the production efficiency is low, and the consistency of movement data is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the above-mentioned defect among the prior art, provide a motor of transfer drunkenness structure that product axial clearance size is stable, production efficiency is high, assembly process is simple and the process is easily controlled, and it can ensure that rotor core axial clearance size is accurate when the assembly to the uniformity of drunkenness data is stable.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the utility model provides a transfer motor of drunkenness structure, includes rotor subassembly and front end housing, the rotor subassembly includes that pivot and fixed cover are established epaxial rotor core, the front end housing include the fore bearing room with set up in the indoor bearing of fore bearing, the pivot with the bearing connects, the rotor subassembly still establishes including fixed cover the epaxial copper sheathing of going up and lower copper sheathing, go up the copper sheathing with the copper sheathing is located respectively down the bearing both sides, just the copper sheathing is located down the bearing with between the rotor core, go up copper sheathing, bearing, lower copper sheathing and rotor core top-down supports tightly each other in proper order.

Furthermore, the utility model discloses still provide following subsidiary technical scheme: the upper copper sleeve is partially located in the front bearing chamber.

The front bearing chamber is provided with a central through hole for the upper copper sleeve to penetrate through.

The front bearing chamber is provided with a central through hole, and the outer diameter of the upper copper sleeve is smaller than or equal to the aperture of the central through hole.

The upper copper sleeve is in interference fit with the rotating shaft.

The lower copper bush is abutted between the rotor iron core and the bearing.

The lower copper bush is in interference fit with the rotating shaft.

The upper copper sleeve is made of lead brass.

The lower copper sleeve is made of lead brass.

The bearing is a ball bearing.

Compared with the prior art, the utility model has the advantages of:

1. the motor of the utility model adopts the lower copper bush and the upper copper bush which are sheathed on the rotating shaft to cooperate together to control the axial clearance of the rotor core, the size of the axial clearance is accurately adjusted, and the consistency of the motor test is good;

2. the motor of the utility model can correspondingly change the positions of the bearing and the lower copper bush by adjusting the pressing position of the upper copper bush on the rotating shaft in the assembling process, thereby changing the axial displacement of the rotor core;

3. the utility model discloses motor assembly simple process, the drunkenness volume is adjusted through the outside last copper sheathing press-in position of motor, and the process is easily controlled, need not to relapse the dismouting motor, has improved the quality of product, has practiced thrift the cost.

Drawings

Fig. 1 is a schematic structural diagram of the motor of the present invention.

Fig. 2 is an exploded view of the rotor assembly of the motor of the present invention.

Fig. 3 is a schematic cross-sectional view of the motor of fig. 1.

Fig. 4 is a schematic structural diagram of the upper copper sleeve of the motor of the present invention.

Description of reference numerals: 1. a housing; 2. a stator assembly; 3. a rotor assembly; 4. a front end cover; 5. a rear end cap; 31. a rotating shaft; 32 a rotor core; 33. a copper bush is arranged; 34. mounting a copper sleeve; 41. a front bearing chamber; 42. a bearing; 43. a central through hole; 51. a rear bearing chamber.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings.

As shown in fig. 1 and 3, the present embodiment provides a motor with play adjusting structure, which includes a casing 1, a stator assembly 2 disposed in the casing 1, a front end cover 4 integrated with the casing 1, a rear end cover 5 connected to a lower end of the casing 1, and a rotor assembly 3 disposed in the stator assembly 2.

The front end cover 4 is provided with a front bearing chamber 41, the rear end cover 5 is provided with a rear bearing chamber 51, the front and rear bearing chambers 41 and 51 are both provided with a central through hole 43, bearings 42 for bearing the rotor assembly 3 are mounted in the front bearing chamber 41 and the rear bearing chamber 51, the bearings 42 in the rear bearing chamber 51 are fixed in the rear bearing chamber 51, and the bearings 42 are specifically ball bearings.

With further reference to fig. 2 and 3, the rotor assembly 3 includes a rotating shaft 31 and a rotor core 32 fixedly sleeved on the rotating shaft 31, the rotating shaft 31 matches with an inner ring of the bearing 42, and the rotating shaft 31 penetrates through the bearing 42. The two axial sides of the rotating shaft 31 respectively pass through the central through holes 43 of the front end cover 4 and the rear end cover 5. The rotor assembly 3 further comprises an upper copper sleeve 34 and a lower copper sleeve 33 which are sleeved on the rotating shaft 31, wherein the upper copper sleeve 34 and the lower copper sleeve 33 are preferably made of lead brass and have good stability to general corrosion. The upper copper sleeve 34 and the lower copper sleeve 33 are respectively in interference fit with the rotating shaft 31, and the lower copper sleeve 33 is positioned between the bearing 42 and the rotor core 32 and can limit the axial displacement of the rotor core 32; the upper copper bush 34 is located at the upper end face of the bearing 42, and the axial position of the lower copper bush 33 can be adjusted by controlling the position at which the upper copper bush 34 is pressed in, thereby adjusting the axial displacement of the rotor core 32 and the bearing 42 inside the motor. Preferably, the outer diameter of the upper copper bush 34 is smaller than or equal to the diameter of the central through hole 43, so that the upper copper bush 34 can enter the bearing chamber 41 along the central through hole 43 and be pressed into the end face of the bearing 42. As shown in fig. 4, in the present embodiment, the copper sleeve is a hollow cylindrical structure, and in other embodiments, the copper sleeve may be configured to match with the external shape structure of the rotating shaft 31 and the bearing 42 according to actual needs.

Pivot 31 passes through its axial displacement of rear bearing room 51 restriction, rotor core 32 when the inside axial clearance of not adjusting of motor, rotor core 32 axial clearance is very big, the utility model discloses in the 3 installation of motor rotor subassembly, with rotor core 32, pivot 31 is impressed in proper order to lower copper sheathing 33 and bearing 42, lower copper sheathing 33 is located between rotor core 32 and the bearing 42, undetermined subassembly 2, after rear end housing 5 and the installation of casing 1 are accomplished, last copper sheathing 34 is impressed pivot 31 along front end housing 4's central through-hole 43, go up copper sheathing 34, bearing 42, lower copper sheathing 33 and rotor core 32 top-down support tightly each other in proper order, ensure that rotor core 32 axial clearance size is accurate.

The motor of the utility model adopts the lower copper bush and the upper copper bush which are sleeved on the rotating shaft to jointly cooperate to control the axial clearance of the rotor core, the size of the axial clearance is accurately adjusted, and the test consistency of the motor is good;

in the technical scheme of the utility model, the lower copper bush and the rotor can be integrally formed before manufacture, the axial displacement size of the rotor in the motor is limited by the pressed position of the upper copper bush in the assembly process of the motor, and the displacement of the rotor is limited by the position of the lower copper bush at the other end of the rotor;

the utility model discloses motor assembly simple process, the play volume is adjusted through the outside last copper sheathing of motor, and the process is easily controlled, need not to relapse the dismouting motor, has improved the quality and the production efficiency of product, has practiced thrift the cost.

It should be noted that the above-mentioned preferred embodiments are only for illustrating the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, and the protection scope of the present invention cannot be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a transfer motor of drunkenness structure, includes rotor subassembly (3) and front end housing (4), rotor subassembly (3) are established including pivot (31) and fixed cover rotor core (32) on pivot (31), front end housing (4) include front bearing room (41) and set up in bearing (42) in front bearing room (41), pivot (31) with bearing (42) join in marriage and connect its characterized in that: rotor subassembly (3) still establish including fixed cover last copper sheathing (34) and lower copper sheathing (33) on pivot (31), go up copper sheathing (34) with lower copper sheathing (33) are located respectively bearing (42) both sides, just lower copper sheathing (33) are located bearing (42) with between rotor core (32), go up copper sheathing (34), bearing (42), lower copper sheathing (33) and rotor core (32) top-down supports tightly each other in proper order.

2. The play adjusting structure motor according to claim 1, wherein: the upper copper sleeve (34) is partially located within the front bearing chamber (41).

3. The play adjusting structure motor according to claim 2, wherein: the front bearing chamber (41) is provided with a central through hole (43) for the upper copper sleeve (34) to penetrate through.

4. The play adjusting structure motor according to claim 3, wherein: the outer diameter of the upper copper sleeve (34) is smaller than or equal to the aperture of the central through hole (43).

5. The play structure adjusting motor according to any one of claims 1 to 4, wherein: the upper copper sleeve (34) is in interference fit with the rotating shaft (31).

6. The play-adjusting structure motor according to any one of claims 1 to 4, wherein: the lower copper bush (33) abuts between the rotor core (32) and the bearing (42).

7. The play adjusting structure motor according to claim 6, wherein: the lower copper sleeve (33) is in interference fit with the rotating shaft (31).

8. The play structure adjusting motor according to any one of claims 1 to 4 or 7, wherein: the upper copper sleeve (34) is made of lead brass.

9. The play structure adjusting motor according to any one of claims 1 to 4 or 7, wherein: the lower copper sleeve (33) is made of lead brass.

10. The play structure adjusting motor according to any one of claims 1 to 4 or 7, wherein: the bearing (42) is a ball bearing.

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