CN220401534U

CN220401534U - Motor

Info

Publication number: CN220401534U
Application number: CN202321513255.9U
Authority: CN
Inventors: 李玮峰; 沈忠夫; 莫巧平; 蒋伟; 郑吉龙; 毛益波; 唐渝广
Original assignee: Zhejiang Shimge Pump Co Ltd
Current assignee: Zhejiang Shimge Pump Co Ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2024-01-26
Anticipated expiration: 2033-06-13

Abstract

The utility model relates to a motor, which solves the problems of skew or biased wave spring in the prior art, adopts the following technical scheme: the bearing is characterized in that an annular groove is formed in the side wall of an inner cavity of the bearing seat, and the wave spring is limited in the annular groove. The effect is that: the ring groove is formed in the bearing seat, the wave spring is clamped into the ring groove, and then the bearing seat clamped with the wave spring is sleeved on the bearing, so that the bearing is embedded into the inner cavity of the bearing seat, the situation that the wave spring is askew or biased in the installation process is avoided, and the wave spring generates effective and reliable pretightening force on the bearing.

Description

Motor

Technical Field

The utility model relates to the field of motors, in particular to a motor with an improved wave spring mounting mode.

Background

In an electric motor, the wave spring acts to provide a preload force to the bearing. In the process of motor production and assembly, a bearing sleeve is usually placed on a rotating shaft, then a wave spring is placed on the outer end surface of the bearing, and then a bearing seat is pressed onto the bearing, so that the bearing is embedded into an inner cavity of the bearing seat, as shown in fig. 1. In the installation process, the wave spring is firstly placed and then the bearing seat is pressed, the wave spring is not fixed in position, and the wave spring is easily placed askew or pressed and biased in the pressing process. The bearing seat referred to herein may be a simple bearing seat, or a bearing seat with an integral structure with a bearing end cover, or a bearing seat with an integral structure with an oil chamber, or an upper bearing seat (which is disposed at one end of the motor rotating shaft, i.e. the end facing away from the conveying end on the rotating shaft, i.e. the end corresponding to the appearance end of the cable). The wave spring position is inclined and biased in the mounting process of the bearing, so that the corresponding technical scheme is needed to solve.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide a motor, wherein an annular groove is formed in a bearing seat, a wave spring is clamped into the annular groove, and then the bearing seat clamped with the wave spring is sleeved on a bearing, so that the bearing is embedded into an inner cavity of the bearing seat, the situation that the wave spring is put askew or is biased in the installation process is avoided, and the wave spring generates effective and reliable pretightening force on the bearing.

The technical aim of the utility model is mainly solved by the following technical scheme: the motor comprises a rotating shaft, a bearing arranged on the rotating shaft and a bearing seat matched with the bearing, and a wave spring arranged between the bearing and the bearing seat, and is characterized in that a ring groove is arranged on the side wall of an inner cavity of the bearing seat, and the wave spring is limited in the ring groove. The annular groove is additionally arranged on the side wall of the inner cavity of the bearing seat and used for limiting the wave spring, so that the wave spring is prevented from being touched to shift in the process of pressing the bearing seat, and meanwhile, the wave spring can be prevented from being biased in the process of pressing. The specific assembly process is as follows: the wave spring is clamped into the annular groove, and then the bearing seat clamped with the wave spring is sleeved on the bearing, so that the bearing is embedded into the inner cavity of the bearing seat, and in the installation process, the annular groove has a limiting effect on the wave clamp spring, so that the wave clamp spring is prevented from moving randomly, and the position of the wave spring is prevented from shifting. Meanwhile, under the action of the ring groove, the phenomenon of biased pressure can be avoided, the wave spring can axially deform in the ring groove, and the wave spring can also generate effective and reliable pretightening force on the bearing.

As a further improvement and supplement to the technical scheme, the utility model adopts the following technical measures: the ring groove is arranged at the bottom of the inner cavity of the bearing seat. The bearing is arranged in the bearing end cover, the oil chamber or the upper bearing seat, under the general condition, the waveform clamp spring is arranged at the bottom of the inner cavity of the bearing seat, the bearing end cover, the oil chamber or the upper bearing seat limits one end corresponding to the waveform clamp spring, and the other end of the waveform clamp spring is limited by the bearing, so that the assembly structure of the bearing provided with the waveform clamp spring and the bearing seat is simpler and more reasonable, and each component can work normally and stably. That is, the wave spring is disposed between the end of the bearing and the bottom of the bearing housing.

Further preferably, the diameter of the inner cavity of the bearing seat is D, and the outer diameter of the ring groove is D+0.3-D+0.8mm. In other words, the diameter of the ring groove is 0.3-0.8 mm larger than the diameter of the inner cavity of the bearing seat, so that the ring groove is convenient to adapt to the outer diameter of the wave spring. Of course, when the overall size of the motor is larger, the diameter of the ring groove can be larger than that of the inner cavity of the bearing seat, and when the diameter of the ring groove is increased, the outer diameter of the corresponding wave spring is also increased, and the protection scope of the utility model is also provided.

Further preferably, the free height of the wave spring is H, and the height of the ring groove is H-0.3-H-0.8 mm. Through the setting of annular height, can make wave spring have certain degree of freedom in the annular, can prevent simultaneously that wave spring from appearing at the in-process skew of pressure equipment bearing frame or by the circumstances of pressure off tracking again, but also can produce effective and reliable pretightning force to the bearing.

The end face of the ring groove is rectangular. The wave spring is favorable for stably and reliably moving in the ring groove, and certain deformation effect on the wave spring is prevented, so that the deformation of the wave spring is only caused by the force generated by the cooperation of the bearing seat and the bearing.

In the motor, when the bearing pedestal is integrated on the bearing end cover, the motor further comprises the bearing end cover, and the bearing pedestal is arranged in the inner cavity of the bearing end cover and is in an integrated structure with the bearing end cover.

In the motor, when the bearing seat is integrated on the oil chamber, the motor further comprises the oil chamber, and the bearing seat is arranged at the inner end of the oil chamber and is in an integral structure with the oil chamber.

In the motor, when the bearing seat is integrated on the upper bearing seat, the motor further comprises the upper bearing seat, and the bearing seat is arranged at the inner end of the upper bearing seat and is in an integrated structure with the upper bearing seat.

Further preferably, the upper bearing seat is matched with the tail end of the motor rotating shaft, and the tail end of the motor rotating shaft is deviated from the output end of the rotating shaft.

The utility model has the beneficial effects that: 1. and the annular groove is additionally arranged on the side wall of the inner cavity of the bearing seat and used for limiting the wave spring, so that the wave spring is prevented from being touched to shift in the process of press-mounting the bearing seat. 2. The wave spring can be prevented from being biased in the press fitting process. 3. Under the action of the ring groove, the wave spring only performs axial deformation action, and can generate effective and reliable pretightening force on the bearing.

Drawings

Fig. 1 is a schematic view of a prior art structure to which the present utility model relates.

Fig. 2 is a schematic structural view of a first motor according to the present utility model.

Fig. 3 is a partially enlarged structural schematic view of fig. 2.

Fig. 4 is a schematic structural view of a second motor according to the present utility model.

Fig. 5 is a partially enlarged structural schematic view of fig. 2.

Fig. 6 is a schematic structural view of a second motor according to the present utility model.

Fig. 7 is a partially enlarged structural schematic diagram of fig. 2.

In the figure: 1. a rotating shaft; 2. a bearing; 3. a bearing seat; 4. a wave spring; 5. a ring groove; 6. a bearing end cap; 7. an oil chamber; 8. an upper bearing seat; 9. and an output terminal.

Detailed Description

The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.

Example 1: as shown in fig. 2 and 3, a motor includes a rotating shaft 1, a bearing 2 provided on the rotating shaft 1, and a bearing housing 3 fitted with the bearing 2, and a wave spring 4 provided between the bearing 2 and the bearing housing 3.

The improvement of the technical scheme is as follows: the side wall of the inner cavity of the bearing seat 3 is provided with a ring groove 5, and the wave spring 4 is limited in the ring groove 5. The annular groove 5 is additionally arranged on the side wall of the inner cavity of the bearing seat 3 and used for limiting the wave spring 4, so that the wave spring 4 is prevented from being touched to shift in the process of press-fitting the bearing seat 3, and meanwhile, the wave spring 4 can be prevented from being biased in the process of press-fitting.

The specific assembly process is as follows: the wave spring 4 is clamped into the annular groove 5, and then the bearing seat 3 clamped with the wave spring 4 is sleeved on the bearing 2, so that the bearing 2 is embedded into the inner cavity of the bearing seat 3, and in the installation process, the annular groove 5 has a limiting effect on the wave clamp spring, so that the wave clamp spring is prevented from moving randomly, and the position of the wave spring 4 is prevented from shifting. Meanwhile, under the action of the annular groove 5, the phenomenon of biased pressure can be avoided, the wave spring 4 can axially deform in the annular groove 5, and the wave spring 4 can also generate effective and reliable pretightening force on the bearing 2.

In addition to the above technical solution, the ring groove 5 is disposed at the bottom of the inner cavity of the bearing seat 3.

In general, the bearing 2 at one end of the motor shaft is disposed in the bearing end cover 6, the oil chamber 7 or the upper bearing seat 8, and the wave-shaped snap springs are all disposed at the bottom of the inner cavity of the bearing seat 3. The bearing end cover 6, the oil chamber 7 or the upper bearing seat 8 limit one end corresponding to the waveform snap spring, and the other end of the waveform snap spring is limited by the bearing 2, so that the assembly structure of the bearing 2 and the bearing seat 3 provided with the waveform snap spring is simpler and more reasonable, and each part can work normally and stably. That is, the wave spring 4 is disposed between the end of the bearing 2 and the bottom of the bearing housing 3.

Under normal conditions, the outer diameter of the waveform snap spring is large, and the inner diameter of the waveform snap spring is small, so that the waveform spring can smoothly generate a certain pretightening force on the bearing.

In this embodiment, the diameter of the inner cavity of the bearing seat 3 is D, and the outer diameter of the ring groove 5 is d+0.3 to d+0.8mm). Namely, the diameter of the ring groove 5 is 0.3-0.8 mm larger than the diameter of the inner cavity of the bearing seat 3, so that the ring groove is convenient to adapt to the outer diameter of the wave spring 4. The preferable scheme of the diameter of the ring groove 5 is as follows: the outer diameter of the ring groove 5 is D+0.5mm, and in order to form proper fit between the wave spring and the bearing and between the wave spring and the ring groove 5, the outer diameter of the wave spring is D+0.3-D+0.5mm, preferably the outer diameter of the wave spring is D+0.3mm.

Of course, when the overall size of the motor is larger, the diameter of the ring groove 5 can be larger than that of the inner cavity of the bearing seat 3, and when the diameter of the ring groove 5 is increased, the outer diameter of the corresponding wave spring 4 is also increased, which is also within the protection scope of the utility model.

Further preferably, the free height of the wave spring 4 is H, and the height of the ring groove 5 is H-0.3 to H-0.8mm. For the improved technical scheme, the wave spring 4 can have a certain degree of freedom in the annular groove 5 through the arrangement of the height of the annular groove 5, and meanwhile, the wave spring 4 can be prevented from deviating or being biased in the process of press-fitting the bearing seat 3, and an effective and reliable pretightening force can be generated on the bearing 2. The preferable scheme of the height of the ring groove 5 is as follows: the height of the ring groove 5 is H-0.5mm.

Further optimize the technical scheme of annular 5, the terminal surface of annular 5 is the rectangle, is favorable to wave spring 4 to stably and reliably remove in annular 5, prevents to produce certain deformation effect to wave spring 4, makes wave spring 4's deformation come from the force that the cooperation of bearing frame 3 and bearing produced alone.

In this embodiment, the bearing housing 3 is integrated on the bearing end cap 6, so that the motor further includes the bearing end cap 6, and the bearing housing 3 is disposed in the inner cavity of the bearing end cap 6 and is integrally formed with the bearing end cap 6.

Example 2: as shown in fig. 4 and 5, on the basis of embodiment 1, the bearing housing 3 is integrated on the oil chamber 7, and therefore, the motor further includes the oil chamber 7, and the bearing housing 3 is provided at the inner end of the oil chamber 7 and is integrally structured with the oil chamber 7.

Example 3: as shown in fig. 6 and 7, on the basis of embodiment 1, the bearing housing 3 is integrated on the upper bearing housing 8, and therefore, the motor further includes the upper bearing housing 8, and the bearing housing 3 is provided at the inner end of the upper bearing housing 8 and is integrally formed with the upper bearing housing 8.

Further preferably, the upper bearing seat 8 is matched with the tail end of the motor rotating shaft 1, and the tail end of the motor rotating shaft 1 is away from the output end 9 of the rotating shaft 1.

The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the utility model. In the above-described embodiments, the present utility model is susceptible to various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a motor, includes pivot (1), set up bearing (2) on pivot (1) and with bearing (2) complex bearing frame (3), set up in wave spring (4) between bearing (2) with bearing frame (3), its characterized in that set up an annular (5) on the lateral wall of the inner chamber of bearing frame (3), wave spring (4) are spacing in annular (5).

2. An electric machine according to claim 1, characterized in that the ring groove (5) is arranged at the bottom of the inner cavity of the bearing housing (3).

3. An electric machine according to claim 2, characterized in that the wave spring (4) is arranged between the end of the bearing (2) and the bottom of the bearing housing (3).

4. The motor according to claim 1, characterized in that the diameter of the inner cavity of the bearing seat (3) is D, and the outer diameter of the ring groove (5) is d+0.3-d+0.8 mm.

5. The motor according to claim 1, characterized in that the free height of the wave spring (4) is H, and the height of the ring groove (5) is H-0.3-H-0.8 mm.

6. An electric machine according to any one of claims 1-5, characterized in that the end faces of the ring grooves (5) are rectangular.

7. The electric machine according to any of claims 1-5, further comprising a bearing end cap (6), the bearing housing (3) being arranged in an inner cavity of the bearing end cap (6) and being of unitary construction with the bearing end cap (6).

8. The electric machine according to any one of claims 1-5, characterized in that it further comprises an oil chamber (7), said bearing housing (3) being arranged at an inner end of said oil chamber (7) and being of unitary construction with said oil chamber (7).

9. The electric machine according to any one of claims 1-5, characterized in that it further comprises an upper bearing housing (8), said bearing housing (3) being arranged at an inner end of said upper bearing housing (8) and being of unitary construction with said upper bearing housing (8).

10. An electric machine according to claim 9, characterized in that the upper bearing block (8) cooperates with the rear end of the shaft (1), which rear end faces away from the output end (9) of the shaft.