Vehicle motor and elastic washer
By designing an annular plate-shaped elastic washer with a tongue on the outer periphery and abutment on the inner periphery, the problems of complex assembly and debris accumulation of existing vehicle motor elastic washers are solved, thereby simplifying assembly, reducing costs and improving motor operation stability.
Patent Information
- Application Number
- CN202422821039.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-19
AI Technical Summary
The elastic washers of existing vehicle motors are easily displaced during assembly, causing abnormal operation. The assembly process is complex and costly, and may cause debris accumulation, affecting motor performance.
An annular plate-shaped elastic washer is designed with multiple tongues on the outer periphery and abutment parts on the inner periphery, which simplifies the assembly process, avoids displacement of the elastic washer, and positions it on the bearing seat through the abutment parts to reduce the generation of debris.
The assembly process of the vehicle motor is simplified, the manufacturing cost is reduced, the displacement of the elastic gasket and the accumulation of debris are avoided, and the stability and reliability of the motor operation are improved.
Smart Images
Figure CN223472135U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of vehicle. Specifically, the utility model relates to a vehicle motor and an elastic washer thereof. BACKGROUND
[0002] A vehicle motor (such as an electric power steering motor) comprises a motor cover and a motor shaft, the motor shaft is fixedly connected with a motor rotor and is assembled in the motor cover through a bearing, and a motor stator is also installed in the motor cover. Generally, in order to prevent the bearing from loosening during the operation of the motor, reduce the noise generated by the bearing, and improve the accuracy and smoothness of the rotation of the bearing, an elastic washer is arranged, which can be elastically deformed to apply a pre-stress to the bearing.
[0003] Figure 1 An annular wave-shaped elastic washer 10 commonly used at present is shown, which is configured in a wave shape to obtain elastic performance.
[0004] Figure 2 A partial cross-sectional view of an example of a vehicle motor 1 is shown, which comprises an annular elastic washer 10, a motor shaft 20, a bearing 30, and a motor cover 40. The motor shaft 20 passes through the bearing 30 and is assembled with the bearing 30 at or near a shaft neck 21, the motor cover 40 is provided with a bearing seat 41, and the bearing 30 abuts against the bearing seat 41 via the elastic washer 10 to assemble the motor shaft 20 in the motor cover 40. The vehicle motor further comprises an electronic control unit ECU (not shown), which is arranged at an ECU side A (left side in Figure 2 ) of the motor cover 40; and motor components such as a motor rotor and a motor stator, which are arranged at a motor inner side B (right side in Figure 2 ) of the motor cover 40.
[0005] Figure 3 An exploded perspective view of the vehicle motor 1 shown in Figure 2 is shown, Figures 4a-4b an assembly view of the vehicle motor 1 shown in Figure 2 is shown. As shown in Figure 3 , the motor shaft 20 and the bearing 30 are usually assembled together in advance. When assembled, as shown in Figure 4a , the elastic washer 10 is first installed at the bearing seat 41 of the motor cover 40 from the motor inner side B towards the ECU side A. Then, as shown in Figure 4b , the bearing 30 is installed at the bearing seat 41 together with the motor shaft 20 from the motor inner side B towards the ECU side A, so that the bearing 30 abuts against the elastic washer 10.
[0006] The vehicle motor 1 with the elastic washer configured as shown in Figure 1 and Figure 2 has the following disadvantages. First, two elastic washers 10 are easily installed at the bearing seat when assembled, as shown in Figure 5aAs shown, this can cause abnormal operation of the vehicle motor, and it is difficult to detect such improper installation of the elastic washer without disassembling the motor components inside the motor inner side B. Second, since the elastic washer 10 is in a free state on the bearing seat 41 before the bearing 30 is installed, the elastic washer 10 may be displaced during the installation of the bearing 30, for example, the edge of the elastic washer may be stuck on the outer ring of the bearing 30 (see Figure 5b ), which can cause the elastic washer to lose its function and subsequently cause abnormal operation of the vehicle motor. Similarly, it is difficult to detect improper installation of this elastic washer without disassembling the motor components inside the motor inner side B.
[0007] Figure 6 Another conventional annular elastic gasket 10' is shown. It is constructed in the form of a plate and has three elastic tongues 11' disposed on the plate surface near its outer periphery 13' to impart elastic properties. In this example, tongues 11' are formed by cutting a portion of the plate and bending the cut portion away from the plate surface. Furthermore, three snap-fit tabs 12' are provided on the plate's outer periphery at locations spaced apart from tongues 11' to facilitate assembly within a motor cover 40'. In addition to snap-fit tabs 12', the plate's outer periphery 13' tapers outwardly away from tongues 11', while its inner periphery 14' bends away from tongues 11'.
[0008] Figure 7 Shows the adoption Figure 6 A partial cross-sectional view of an example of an elastic washer for a vehicle motor 1', with Figure 2 Like the vehicle motor shown, it includes an elastic washer 10', a motor shaft 20', a bearing 30' and a motor cover 40'. The motor shaft 20' passes through the bearing 30' and is assembled with the bearing 30' at or near the journal 21', and the motor cover 40' is provided with a bearing seat 41'. Figure 2 Differently, the bearing 30' is directly supported against the bearing seat 41' to assemble the motor shaft 20' in the motor cover 40'. Similarly, the vehicle motor 1' also includes an electronic control unit ECU (not shown), which is arranged on the ECU side A ( Figure 6 and motor components, such as a motor rotor and a motor stator, which are arranged on the motor cover 40 'of the motor inner side B ( Figure 6 The elastic washer 10 ′ is assembled into the motor cover 40 ′ from the ECU side A and abuts against the bearing 30 ′ via the tongue 11 ′ to apply prestress to the bearing.
[0009] Figure 8 Shown Figure 7 The exploded perspective view of the vehicle motor 1 ' is shown, Figures 9a-9b Shows Figure 7 The assembly diagram of the vehicle motor 1' is shown in FIG. Figure 8As shown, the motor shaft 20' and the bearing 30' are usually assembled together in advance. When assembling, as shown in Figure 9a As shown, first, the bearing 30' is installed together with the motor shaft 20' from the motor inner side B to the ECU side A at the bearing seat 41', so that the bearing 30' is supported against the bearing seat 41'. Then, as shown in Figure 9b As shown, the elastic washer 10' is buckled in the motor cover 40' at the bearing seat 41' from the ECU side A to the motor inner side B, so that the elastic washer 10' is against the bearing 30'.
[0010] With the elastic washer of the configuration shown in Figure 6 and Figure 7 The vehicle motor 1 with the elastic washer of the configuration shown has the following disadvantages. First, when assembling the elastic washer, the position of the bearing in the motor cover needs to be found first, and then the position of the elastic washer is controlled, so that the elastic washer is accurately positioned in the motor cover (see the required accurate distance d' from the plate surface of the elastic washer to the bearing in Figure 10a ), so that the tab 11' is against the bearing when the elastic washer is buckled in the motor cover, which leads to a complicated assembly process and high manufacturing cost. Second, since the elastic washer 10' is buckled in the motor cover 40' and interferes with the motor cover, debris is easily generated, and the debris will accumulate at the place where the outer periphery of the elastic washer is matched with the inner wall of the motor cover (see Figure 10b ), which is not easy to clean during manufacturing, which will cause the vehicle motor to operate abnormally.
[0011] Therefore, there is a need to improve the current elastic washer and motor assembly. SUMMARY
[0012] The purpose of the utility model is to overcome the above-mentioned shortcomings in the prior art.
[0013] Therefore, the utility model provides an elastic washer for a vehicle motor, which is configured as an annular plate, wherein a plurality of elastic tabs are provided on the plate surface at the outer periphery, and an abutting portion is provided at the inner periphery.
[0014] According to the embodiment, the tab is formed by cutting a part of the plate and bending the cut part away from the plate surface, and the abutting portion is formed by bending 90 degrees away from the tab and the plate surface at the inner periphery.
[0015] Preferably, the tabs are uniformly spaced in the circumferential direction.
[0016] Preferably, the radial extension of the tab is substantially the same as the outer periphery of the plate, i.e. the outer periphery of the plate does not substantially exceed the tab in the radial direction.
[0017] The utility model also provides a vehicle motor, including above-mentioned elastic washer, motor shaft, bearing and motor cover. Motor shaft and bearing are assembled together, and the motor cover is equipped with bearing seat, and the bearing is abutted on the bearing seat through the elastic washer, thereby assembling the motor shaft in the motor cover.
[0018] According to the embodiment, the motor shaft passes through the bearing and is assembled together with the bearing at or near the journal.
[0019] Preferably, the elastic washer rests on the bearing seat by the abutment portion, and the outer periphery of the elastic washer does not abut against the inner wall of the motor cover.
[0020] The elastic washer according to the utility model has a simple structure, can simplify the assembly process of the vehicle motor, reduce manufacturing cost, avoid displacement of the elastic washer during assembly, and reduce or avoid generation of debris during operation of the motor. BRIEF DESCRIPTION OF DRAWINGS
[0021] Embodiments of the utility model will be explained in more detail in the drawings, in which:
[0022] Figure 1 A schematic perspective view of an elastic washer according to a prior art example is shown;
[0023] Figure 2 A partial cross-sectional view of a vehicle motor with the elastic washer shown in Figure 1
[0024] A partial cross-sectional view of a vehicle motor with the elastic washer shown in Figure 3 Figure 2 An exploded perspective view of the vehicle motor shown in
[0025] Figures 4a-4b Figure 2 A schematic perspective view of an assembly process of the vehicle motor shown in
[0026] Figures 5a-5b A partial cross-sectional view of a vehicle motor with the elastic washer shown in Figure 2
[0027] Figure 6 A schematic perspective view of an elastic washer according to another prior art example is shown;
[0028] Figure 7 A partial cross-sectional view of a vehicle motor with the elastic washer shown in Figure 6
[0029] An exploded perspective view of the vehicle motor shown in Figure 8 Figure 7 A partial cross-sectional view of a vehicle motor with the elastic washer shown in
[0030] Figures 9a-9b Figure 7 a schematic perspective view of an assembly process of the vehicle motor shown in FIG. 1;
[0031] Figures 10a-10b shown in FIG. 1 is shown; Figure 7 a schematic cross-sectional view of the vehicle motor shown in FIG. 1 is shown;
[0032] Figure 11 a schematic perspective view of an elastic gasket according to an embodiment of the present application is shown;
[0033] Figure 12 a partial cross-sectional view of a vehicle motor having an elastic gasket according to an embodiment of the present application is shown;
[0034] Figure 13 shown in FIG. 1 is shown; Figure 12 a schematic perspective view of an exploded view of the vehicle motor shown in FIG. 1 is shown;
[0035] Figures 14a-14b shown in FIG. 1 is shown; Figure 12 a schematic perspective view of an assembly process of the vehicle motor shown in FIG. 1 is shown; and
[0036] Figures 15a-15c shown in FIG. 1 is shown. Figure 12 a schematic cross-sectional view of the vehicle motor shown in FIG. 1 is shown.
[0037] In the drawings, the embodiments of the present application are shown in a simplified manner in order to illustrate the principles of the present application. The drawings are not necessarily to scale. Like reference numerals in different drawings denote like parts. DETAILED DESCRIPTION
[0038] For the convenience of description, directional terms are used in the specification, which refer to the directions shown in the drawings, and the actual directions can be different.
[0039] Reference will now be made to Figures 11-13 An elastic gasket 110 and a vehicle motor 100 according to an embodiment of the present application are described in detail.
[0040] Figure 11 An annular elastic gasket 110 according to an embodiment of the present application is shown, which is configured in a plate shape, and 3 elastic tabs 111 are provided at an outer circumference 113 on the plate surface at uniform intervals to obtain elastic properties. In this example, the tabs 111 are formed by cutting a portion of the plate and bending the cut portion away from the plate surface, and extend radially by substantially the same as the outer circumference 113. In addition, the plate is bent away from the plate surface at an inner circumference 114 by 90 degrees at the tabs 111, thereby forming an abutting portion 112 to be fitted to a bearing seat 141 of a motor cover 140.
[0041] Figure 12 a schematic perspective view of an elastic gasket according to an embodiment of the present application is shown; Figure 11Figure 1 shows a partial cross-sectional view of a vehicle motor 100 with an elastic washer 110, which includes an annular elastic washer 110, a motor shaft 120, a bearing 130, and a motor housing 140. The motor shaft 120 passes through the bearing 130 and is assembled with the bearing 130 at or near a shaft neck 121, and the motor housing 140 is provided with a bearing seat 141, and the bearing 130 is abutted against the bearing seat 141 via the elastic washer 110 to assemble the motor shaft 120 in the motor housing 140. The vehicle motor further includes an electronic control unit ECU (not shown) arranged at an ECU side A (left side in Figure 12 Figure 1) of the motor housing 140; and motor components such as a motor rotor and a motor stator arranged at a motor inner side B (right side in Figure 12 Figure 1) of the motor housing 140. In this example, due to the presence of the abutting portion 112, the elastic washer 110 only rests on the bearing seat 141 during assembly, i.e. the elastic washer is prevented from being displaced before the bearing is assembled, without the need to provide a snap tab on the outer periphery 113 to abut against the inner wall of the motor housing 140.
[0042] Figure 13 Figure 2 shows an exploded perspective view of the vehicle motor 100 shown in Figure 12 Figure 1, Figures 14a-14b Figure 3 shows an assembly view of the vehicle motor 100 shown in Figure 12 Figure 1. As shown in Figure 13 Figure 1, the motor shaft 120 and the bearing 130 are usually assembled together in advance. During assembly, as shown in Figure 14a Figure 3, the elastic washer 110 is first installed at the bearing seat 141 of the motor housing 140 from the motor inner side B towards the ECU side A, such that the abutting portion 112 abuts against the bearing seat 141. Then, as shown in Figure 14b Figure 3, the bearing 130 together with the motor shaft 120 is installed at the bearing seat 141 from the motor inner side B towards the ECU side A, such that the bearing 130 abuts against the tab 111 of the elastic washer 110.
[0043] The vehicle motor 100 with the elastic washer 110 in the configuration shown in Figure 11 Figure 1 and Figure 12 Figure 2 has the following advantages. First, the need to install two elastic washers during assembly is avoided, eliminating the risk of abnormal operation of the vehicle motor resulting therefrom. Second, due to the presence of the abutting portion 112, as shown in Figure 15a Figure 1, the position of the elastic washer does not need to be precisely controlled, the assembly process is simple, and the manufacturing cost is low. Third, the generation of debris is avoided or at least reduced, and even if debris is generated, it will not accumulate, and it is easy to remove during manufacturing by means of a blow gun 200 or a vacuum cleaner 300, as shown in Figure 15b Figure 2. Fourth, if the elastic washer is installed improperly, it is easy to detect by measuring the distance d between the inner periphery bending of the elastic washer and the motor housing 140 of the ECU side A, as shown in Figure 15cwithout disassembling the motor components within the motor interior side B.
[0044] The above embodiments illustrate the principles of the present application in specific applications, and the words and expressions used are illustrative and not restrictive. It will be apparent to those skilled in the art that the use of these words and expressions does not preclude any equivalents of the features illustrated and described. Those skilled in the art can make various modifications to the above embodiments in form, use and implementation details without exercising inventive capability, and without departing from the principles and concepts of the present application defined in the claims
[0045] In some cases, the features disclosed in the present application can be used independently of other features. On the other hand, when necessary, the features disclosed in the present application can be combined to provide various combinations.
Claims
1. An elastic washer for a vehicle motor, characterized by, The elastic washer is configured as an annular plate, wherein a plurality of elastic tabs are provided at an outer periphery on a plate surface, and an abutting portion is provided at an inner periphery, wherein the tabs are formed by cutting a portion of the plate and bending the cut-out portion away from the plate surface, and the abutting portion is formed by bending 90 degrees away from the tabs at the inner periphery from the plate surface.
2. The elastomeric gasket of claim 1, wherein, The tabs are evenly spaced in the circumferential direction.
3. The elastomeric gasket of claim 1 or 2, wherein, The radial extension of the tabs is the same as the outer periphery of the plate.
4. A vehicle electric motor comprising a motor shaft, a bearing and a motor cover, wherein the motor shaft and the bearing are assembled together, and the motor cover is provided with a bearing seat, characterized in that, The vehicle electric machine further comprises an elastic washer according to any one of claims 1-3, the bearing abutting against the bearing seat via the elastic washer, whereby the electric machine shaft is fitted within the electric machine housing.
5. The vehicle electric machine of claim 4, wherein, The electric machine shaft passes through the bearing and is fitted therewith at or near the journal.
6. The vehicle electric machine according to claim 4 or 5, characterized by The elastic washer rests on the bearing seat via the abutting portion, and the outer periphery of the elastic washer does not abut against the inner wall of the electric machine housing.