Wave spring mounting structure and motor

Abstract

The utility model discloses a wave spring installation structure and a motor, comprising an end cover, a first groove body with an opening at one end formed on the end cover, a bearing adaptively installed in the first groove body, a second groove body formed at the bottom end in the first groove body, and a wave spring adaptively installed in the second groove body. A third groove body is formed between the first groove body and the second groove body, the diameter of the third groove body is larger than that of the first groove body, a gasket is arranged above the wave spring, a plurality of protruding lugs protruding towards the radial outer side direction are formed on the peripheral face of the gasket, and guide grooves allowing the protruding lugs on the gasket to penetrate downwards are formed in the inner side wall of the first groove body in the depth direction. One end of the guide groove is communicated with the third groove body, and the protruding lug on the gasket is installed in the third groove body in a limited mode. The structure is simple, the feasibility is high, the wave spring and the gasket can be limited and installed in the end cover in advance, and follow-up operation of stator and rotor combination is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile motor technology field, concretely relates to a waveform spring mounting structure and motor. BACKGROUND

[0002] The motor is composed of a rotor and a stator, and is used for converting electric energy and mechanical energy and vice versa. With the rapid development of new energy vehicles, most new energy vehicles adopt a parallel shaft three-bearing electric drive system structure, that is, a motor shaft is supported by a bearing at a non-driving end, and a reducer input shaft is supported by two bearings. Since the motor shaft is supported by only one bearing at the non-driving end, and in order to meet the service life requirement of the motor bearing, the non-driving end bearing needs to be pre-tightened by a waveform spring.

[0003] The existing waveform spring mounting structure and mounting sequence are as follows: first, place the waveform spring above the bearing at the end of the rotor shaft, and then assemble the rotor structure, the upper end cover and the stator in the end cover. During the assembly process, if the waveform spring is shaken, it is easy to fall off the bearing. Moreover, the accuracy of the placement position of the waveform spring is extremely high during the assembly process, otherwise, the waveform spring cannot be accurately inserted into the hole slot on the end cover, resulting in that the rotor structure cannot be smoothly assembled with the end cover and the stator structure. UTILITY MODEL CONTENTS

[0004] In order to solve the problems in the above background art, the utility model provides a waveform spring mounting structure which is simple in structure, easy to implement, and can pre-limit the installation of the waveform spring and the gasket in the end cover, facilitating the subsequent assembly of the rotor and the stator. In addition, the utility model also provides a motor using the above waveform spring mounting structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In the first aspect of the utility model, a waveform spring mounting structure is provided, which comprises an end cover, a first slot body with an opening at one end is formed on the end cover, a bearing is adapted and installed inside the first slot body, a second slot body is formed at the bottom end of the first slot body, a waveform spring is adapted and installed inside the second slot body, a third slot body is formed between the first slot body and the second slot body, the diameter of the third slot body is greater than that of the first slot body, a gasket is provided above the waveform spring, a plurality of lugs protruding towards the radial outside direction are formed on the outer circumferential surface of the gasket, a guide groove is formed on the inner side wall of the first slot body along the depth direction, through which the lugs on the gasket pass downward, one end of the guide groove is in communication with the third slot body, and the lugs on the gasket are limited and installed into the third slot body.

[0007] Further, the depth of the third slot body is greater than the thickness of the gasket.

[0008] Through the above arrangement, when the gasket is used in cooperation with the wave spring and the bearing, the gasket is in a floating device, so that the position of the gasket cannot be stuck in the position of the bearing under the limit size chain.

[0009] Further, the outer diameter of the wave spring is smaller than the outer diameter of the gasket and larger than the inner diameter of the gasket.

[0010] Through the above arrangement, it is ensured that the wave spring and the gasket have a certain contact width, and in turn, it is ensured that the cooperation structure of the gasket and the wave spring meets the strength requirement.

[0011] Further, the opening end of the first groove body is a horn-shaped structure with gradually increasing opening.

[0012] Since the outer diameters of the gasket and the bearing are not much different from the diameter of the first groove body, by arranging the opening end structure of the first groove body, the gasket and the bearing can be smoothly guided to be installed to the corresponding positions inside through the opening end of the first groove body, so that the assembly process is quickly and smoothly performed.

[0013] Further, a positioning column is formed on the inner bottom of the second groove body of the end cover, the positioning column is coaxially arranged with the first groove body, and the positioning column is cooperatively installed with the end portion of the rotor shaft.

[0014] Specifically, the end cover and the positioning column are integrally formed, and when the rotor assembly is cooperatively installed with the end cover and the stator assembly in the end cover, the positioning column is cooperatively positioned with the end portion of the rotor shaft, so that the bearing of the end portion of the rotor shaft can be accurately positioned and installed inside the first groove body and abut against the gasket.

[0015] Further, the lugs are uniformly distributed on the outer circumferential surface of the gasket, and the number and position of the guide grooves on the inner side wall of the first groove body correspond to the number and position of the lugs on the outer circumferential surface of the gasket respectively.

[0016] Specifically, two lugs are symmetrically arranged on the outer circumferential surface of the gasket, and two guide grooves are symmetrically formed on the inner side wall of the first groove body, and when installed, the lugs on the gasket are loaded into the third groove body along the corresponding guide grooves, and then the gasket is rotated by a certain angle, and the lugs on the gasket are limitingly installed in the third groove body.

[0017] In the second aspect of the present application, a motor is provided, which comprises the above wave spring installation structure.

[0018] Further, a rotor assembly is further included, the wave spring and the gasket are installed in the end cover of the wave spring installation structure, a bearing is installed at one end of a rotor shaft in the rotor assembly, the bearing is abuttingly installed in the first groove body on the end cover, and the bearing abuts against the gasket.

[0019] Further, a stator assembly is also included, which is installed in cooperation with the rotor assembly.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] The utility model discloses a wave spring mounting structure which comprises an end cover, a first slot body, a guide slot, a second slot body, a positioning column, a third slot body, a horn structure, a gasket and an ear, wherein the end cover is provided with the first slot body, the guide slot, the second slot body and the third slot body, the wave spring is installed in the second slot body in advance, the ear on the gasket is installed into the third slot body along the corresponding guide slot, then the gasket is rotated by a certain angle, and the ear on the gasket is limitedly installed into the third slot body, thereby limiting the wave spring, effectively avoiding the problem that the wave spring falls off when the stator and the rotor are assembled, and prolonging the service life of the wave spring. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0023] Figure 1 It is a structure schematic view of the wave spring mounting structure and the rotor assembly cooperation installation in the utility model;

[0024] Figure 2 It is a cross section view of the wave spring mounting structure and the rotor assembly cooperation installation structure in the utility model;

[0025] Figure 3 It is Figure 2 It is a local structure schematic view of the first slot body;

[0026] Figure 4 It is a local cross section view of the first slot body when the gasket and the wave spring are not installed;

[0027] Figure 5 It is a structure schematic view of the gasket in the utility model;

[0028] Among them, specific drawing mark is:

[0029] End cover 1, first slot body 2, guide slot 3, second slot body 4, positioning column 5, third slot body 6, horn structure 7, gasket 8, ear 9, rotor assembly 10, rotor shaft 11, bearing 12. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] Embodiment 1

[0032] The existing wave spring is directly used in cooperation with the bearing, when installing, the wave spring is directly placed at the end of the bearing, and the wave spring is prone to falling off, in addition, the wave spring needs to be customized and developed according to the bearing size, the cost is higher, and the wave spring is prone to plastic flattening under the cyclic stress.

[0033] In order to solve the above problems, the utility model discloses a wave spring mounting structure, as shown in Figures 1 to 5 The utility model discloses a wave spring mounting structure, as shown in, including end cover 1, the first groove body 2 with the opening of one end is formed on end cover 1, the bearing 12 is adapted to install in the first groove body 2 inside, the second groove body 4 is formed in the first groove body 2 inner bottom, the wave spring (not shown in the drawing) is adapted to install in the second groove body 4 inside, the third groove body 6 is formed between the first groove body 2 and the second groove body 4, the diameter of third groove body 6 is greater than the diameter of first groove body 2, the gasket 8 is equipped above the wave spring, the gasket 8 outer circumferential surface is formed with multiple lug 9 towards the radial outer side direction protruding, the first groove body 2 inner side wall is opened along the depth direction and is provided with the guide groove 3 for the lug 9 on gasket 8 downwardly passing, the guide groove 3 one end is communicated with the third groove body 6, the lug 9 on gasket 8 is limit installation to the third groove body 6 inside.

[0034] On the basis of the existing wave spring, a gasket 8 is added, and lugs 9 are arranged on the outer circumferential surface of the gasket 8, when assembling, the wave spring is pre-installed into the second groove body 4, then the lugs 9 on the gasket 8 are downwardly loaded into the third groove body 6 along the corresponding guide groove 3, then the gasket 8 is rotated by a certain angle, the lugs 9 are staggered with the guide groove 3, the lugs 9 on the gasket 8 are limit installed into the third groove body 6, the wave spring is limited, which can effectively avoid the problem of wave spring falling off when the stator and rotor are assembled, and the rotor and the end cover 1 and the stator and rotor can be directly assembled subsequently, in addition, due to the cooperation of the gasket 8 and the wave spring, the wave spring is prevented from being plastic flattened when subjected to axial impact, and the service life of the wave spring is prolonged.

[0035] In order to avoid the bearing 12 being stuck under the limit size chain, the depth of the third groove body 6 is greater than the thickness of the gasket 8, when the gasket 8 is used in cooperation with the wave spring and the bearing 12, the gasket 8 is in a floating device, which ensures that the position of the gasket 8 will not be stuck with the position of the bearing 12 under the limit size chain.

[0036] In order to ensure that the strength of the wave spring meets the use requirements, the outer diameter of the wave spring is smaller than the outer diameter of the gasket 8 and larger than the inner diameter of the gasket 8, so that the wave spring has a certain contact width with the gasket 8, and the cooperation structure of the gasket 8 and the wave spring meets the strength requirements.

[0037] In order to facilitate the installation of the gasket 8 and the bearing 12 into the groove in the end cover 1, the opening end of the first groove 2 is a gradually increasing opening horn structure 7. Since the outer diameter of the gasket 8 and the bearing 12 is not much different from the diameter of the first groove 2, by setting the opening end structure of the first groove 2, the gasket 8 and the bearing 12 can be smoothly guided to be installed to the corresponding position inside through the opening end of the first groove 2, and the installation process is ensured to be fast and smooth.

[0038] The positioning column 5 is formed on the inner bottom of the second groove 4 of the end cover 1, the positioning column 5 is coaxially arranged with the first groove 2, and the positioning column 5 is cooperatively installed with the end portion of the rotor shaft 11. Specifically, the end cover 1 and the positioning column 5 are integrally formed, and when the rotor assembly 10 is cooperatively installed with the end cover 1 and the stator assembly in the end cover 1, the positioning column 5 is cooperatively installed with the end portion of the rotor shaft 11, so that the bearing 12 at the end portion of the rotor shaft 11 can be accurately positioned and installed inside the first groove 2 and abut against the gasket 8.

[0039] The lugs 9 are uniformly distributed on the outer circumferential surface of the gasket 8, and the number and position of the guide grooves 3 on the inner side wall of the first groove 2 correspond to the number and position of the lugs 9 on the outer circumferential surface of the gasket 8 one by one. The number of lugs 9 on the outer circumferential surface of the gasket 8 can be adjusted according to actual application. In a specific embodiment, two lugs 9 are symmetrically arranged on the outer circumferential surface of the gasket 8, and two guide grooves 3 are symmetrically formed on the inner side wall of the first groove 2. When installing, the lugs 9 on the gasket 8 are loaded into the third groove 6 along the corresponding guide groove 3, then the gasket 8 is rotated by a certain angle, the lugs 9 are staggered with the guide grooves 3, and the lugs 9 on the gasket 8 are limited to be installed into the third groove 6.

[0040] The cooperation installation process of the wave spring installation structure, the wave spring, the gasket 8 and the rotor assembly 10 is as follows:

[0041] (1) The wave spring is pre-placed in the second groove 4 on the end cover 1;

[0042] (2) Then the lugs 9 on the gasket 8 are loaded into the third groove 6 along the corresponding guide groove 3 on the inner side wall of the first groove 2, then the gasket 8 is rotated by a certain angle, the lugs 9 are staggered with the guide grooves 3, and the lugs 9 on the gasket 8 are limited to be installed into the third groove 6, and the wave spring is limited;

[0043] (3) then the rotor assembly 10 and end cap 1 and end cap 1 in the stator assembly for installation, rotor assembly 10 in the rotor shaft 11 end bearing 12 precision installation to the first groove 2 inside, and with the gasket 8, in the process, the second groove 4 in the positioning column 5 and the rotor shaft 11 end positioning cooperation.

[0044] Example 2

[0045] A motor, such as Figures 1 to 3 As shown, comprising the above wave spring mounting structure, also includes the rotor assembly 10, wave spring mounting structure of end cap 1 installed in the wave spring (not shown in the figure) and gasket 8, rotor assembly 10 for the conventional rotor structure for motor in the prior art, the rotor shaft 11 end of the rotor assembly 10 is installed with bearing 12, bearing 12 butt joint installation to the first groove 2 on the end cap 1, and the bearing 12 and gasket 8.

[0046] Also includes the stator assembly (not shown in the figure), the stator assembly for the conventional stator structure for motor in the prior art, the stator assembly is installed in advance to the end cap 1, and then with the rotor assembly 10 installation.

[0047] The assembly process of the motor is as follows:

[0048] (1) the stator assembly is installed in advance to the end cap 1;

[0049] (2) the wave spring is placed in advance in the second groove 4 on the end cap 1;

[0050] (3) then the lug 9 on the gasket 8 is loaded into the third groove 6 along the corresponding guide groove 3 on the inner wall of the first groove 2, and then the gasket 8 is rotated by a certain angle, the lug 9 is staggered with the guide groove 3, the lug 9 on the gasket 8 is limited to be installed in the third groove 6, and the wave spring is limited;

[0051] (4) then the rotor assembly 10 and end cap 1 and end cap 1 in the stator assembly for installation, rotor assembly 10 in the rotor shaft 11 end bearing 12 precision installation to the first groove 2 inside, and with the gasket 8, in the process, the second groove 4 in the positioning column 5 and the rotor shaft 11 end positioning cooperation.

[0052] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A wave spring mounting structure characterized by comprising: The end cover is provided with a first groove with an opening at one end, a bearing is fitted in the first groove, a second groove is formed at the bottom of the first groove, a wave spring is fitted in the second groove, a third groove is formed between the first groove and the second groove, the diameter of the third groove is larger than that of the first groove, a gasket is arranged above the wave spring, a plurality of lugs protruding radially outward are formed on the outer circumferential surface of the gasket, a guide groove is formed in the inner side wall of the first groove along the depth direction for the lugs on the gasket to pass downward, one end of the guide groove is connected with the third groove, and the lugs on the gasket are limitedly installed in the third groove.

2. The wave spring mounting structure according to claim 1, characterized by The depth of the third groove is greater than the thickness of the gasket.

3. The wave spring mounting structure according to claim 1 or 2, characterized by The outer diameter of the wave spring is smaller than the outer diameter of the gasket and greater than the inner diameter of the gasket.

4. The wave spring mounting structure according to claim 3, characterized by The opening end of the first groove is a horn-shaped structure with gradually increasing opening.

5. The wave spring mounting structure according to claim 1, characterized by A positioning column is formed at the bottom of the second groove of the end cover, the positioning column is coaxially arranged with the first groove, and the positioning column is fitted with the end of the rotor shaft.

6. The wave spring mounting structure according to claim 1, characterized by The lugs are uniformly distributed on the outer circumferential surface of the gasket, and the number and position of the guide grooves on the inner side wall of the first groove correspond to the number and position of the lugs on the outer circumferential surface of the gasket, respectively.

7. An electric machine characterized by The wave spring installation structure of any one of claims 1-6 is included.

8. The electric machine of claim 7, wherein, The end cover of the wave spring installation structure is further provided with a wave spring and a gasket, a rotor assembly is further included, a bearing is fitted at one end of a rotor shaft of the rotor assembly, the bearing is butted and installed in the first groove of the end cover, and the bearing abuts against the gasket.

9. The electric machine of claim 8, wherein, A stator assembly is further included, and the stator assembly is fitted with the rotor assembly.

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