CN107086698B - Electric control actuator and motor fixing structure for vehicle - Google Patents
Electric control actuator and motor fixing structure for vehicle Download PDFInfo
- Publication number
- CN107086698B CN107086698B CN201710476385.2A CN201710476385A CN107086698B CN 107086698 B CN107086698 B CN 107086698B CN 201710476385 A CN201710476385 A CN 201710476385A CN 107086698 B CN107086698 B CN 107086698B
- Authority
- CN
- China
- Prior art keywords
- motor
- shell
- fixing structure
- housing
- motor fixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007906 compression Methods 0.000 claims abstract description 47
- 230000006835 compression Effects 0.000 claims abstract description 46
- 229920003023 plastic Polymers 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 3
- 239000011257 shell material Substances 0.000 abstract description 19
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 229920000114 Corrugated plastic Polymers 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/26—Means for adjusting casings relative to their supports
Abstract
The application discloses a motor fixing structure which comprises a motor and a shell, wherein the motor is arranged in the shell, an axial gap exists between one or two ends of the motor in the axial direction and the shell, a compression elastic piece is arranged in the axial gap, two ends of the compression elastic piece respectively elastically act on the motor and the shell, and the compression elastic piece is precompressed. When the temperature changes, internal stress or clearance is formed due to the difference of the thermal expansion coefficients of the motor and the shell material, the internal stress is formed due to the fact that the deformation size of the motor is larger than that of the shell, and the internal stress can be counteracted by the axial clearance and the compression elastic piece. The gap is formed by the fact that the deformation size of the motor is smaller than that of the shell, the gap is enlarged in the axial direction, the increased gap can be counteracted by the precompressed compression elastic piece, and meanwhile the motor is firmly fixed. The application also discloses an electric control actuator for the vehicle, which uses the motor fixing structure.
Description
Technical Field
The application relates to the technical field of automobile electric control actuators, in particular to a motor fixing structure. And also relates to an automobile electric control actuator applying the motor fixing structure.
Background
The electric control actuator is an important part of an automobile, and a motor is generally adopted as a power source to control the action of a product. In the field of electric control actuators for vehicles, the electric control actuator may need to bear large vibration, impact load, temperature load and the like due to the specificity of the application environment, and the severe application environment puts high demands on the design of products. The motor unit in the electric control actuator is used as a power source of the whole product, and the fixed structure of the motor unit is directly related to the operation reliability of the motor.
The prior motor fixing mode is shown in fig. 1, a motor 02 is fixed in a housing 01 of an electric control actuator, the motor 02 is fixedly connected with the housing 01, in order to fix the motor 02 firmly, two axial ends of the motor 02 are fixedly attached to the housing 01, and the size of a motor assembly space is fixed. When the ambient temperature changes, the thermal expansion coefficients of the material of the casing 01 and the material of the motor 02 are different, which is likely to cause the product to generate huge internal stress, and finally cause the casing of the product to break. At the same time, this fixing method also has high demands on the assembly process and the size of the parts.
In summary, how to solve the problem of internal stress or gap generated between the motor and the housing due to temperature change is a problem to be solved by those skilled in the art.
Disclosure of Invention
Accordingly, the present application is directed to a motor fixing structure, which reduces the influence of internal stress caused by temperature changes, and avoids unstable motor fixing and vibration caused by clearances caused by temperature changes.
Another object of the present application is to provide a motor actuator for a vehicle, to which the motor fixing structure is applied, so as to reduce the influence of internal stress generated by temperature change, and to avoid unstable motor fixing and vibration caused by a gap generated by temperature change.
In order to achieve the above purpose, the present application provides the following technical solutions:
the utility model provides a motor fixed knot constructs, includes motor and casing, the motor set up in the casing, axial one end or both ends of motor with there is axial clearance between the casing, and be provided with the compression elastic component in the axial clearance, the both ends of compression elastic component elasticity respectively act on the motor with on the casing, compression elastic component precompression.
Preferably, in the above motor fixing structure, the axial gap is formed between the end of the motor remote from the output shaft and the housing.
Preferably, in the above motor fixing structure, the compression elastic member is a compression spring structure.
Preferably, in the above motor fixing structure, the compression spring structure is a cylindrical compression spring, a conical compression spring, a wave spring or a disc spring.
Preferably, in the motor fixing structure, the compression spring structure is a plastic compression spring integrally formed with the housing.
Preferably, in the above motor fixing structure, the plastic compression spring includes a plurality of wave-shaped plastic elastic members uniformly distributed along a circumferential direction and a spring stopper located between the wave-shaped plastic elastic members, one end of the wave-shaped plastic elastic member is fixed with the housing, the other end is a free end, and the spring stopper is located near the free end and is used for limiting the free end.
Preferably, in the above motor fixing structure, the limiting surface of the spring limiting block is an inclined surface, and one end of the limiting surface, which is close to the free end, is lower than one end of the limiting surface, which is far away from the free end.
Preferably, in the above motor fixing structure, the bottom portion of the housing and the cylindrical portion of the housing are fixed by laser welding.
The application also provides an electric control actuator for the vehicle, which adopts the motor fixing structure according to any one of the above, wherein the shell of the motor fixing structure is the shell of the electric control actuator for the vehicle.
Compared with the prior art, the application has the beneficial effects that:
in the motor fixing structure provided by the application, the motor is arranged in the shell, an axial gap exists between one or two ends of the motor in the axial direction and the shell, and a compression elastic piece is arranged in the axial gap, and the two ends of the compression elastic piece respectively elastically act on the motor and the shell to precompress the compression elastic piece. When the temperature changes, internal stress or clearance is formed due to the difference of the thermal expansion coefficients of the motor and the shell material, the internal stress is formed due to the fact that the deformation size of the motor is larger than that of the shell, and the internal stress can be counteracted by the axial clearance and the compression elastic piece. The gap is formed by the fact that the deformation size of the motor is smaller than that of the shell, the gap is enlarged in the axial direction, the increased gap can be counteracted by the precompressed compression elastic piece, and meanwhile the motor is firmly fixed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a motor fixing structure in the prior art;
fig. 2 is a schematic structural diagram of a motor fixing structure according to an embodiment of the present application;
fig. 3 is a schematic structural view of a compression elastic member of a motor fixing structure according to an embodiment of the present application.
Detailed Description
The core of the application is to provide a motor fixing structure, which reduces the influence of internal stress generated by temperature change and avoids unstable motor fixing and vibration caused by gaps generated by temperature change.
The application also provides an electric control actuator for the vehicle, which adopts the motor fixing structure, reduces the influence of internal stress generated by temperature change, and avoids unstable motor fixing and vibration caused by gaps generated by temperature change.
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 2, an embodiment of the application provides a motor fixing structure, which includes a motor 2 and a housing 1, wherein the motor 2 is disposed in the housing 1, an axial gap exists between one or both ends of the motor 2 in an axial direction and the housing 1, and a compression elastic member 3 is disposed in the axial gap, two ends of the compression elastic member 3 elastically act on the motor 2 and the housing 1 respectively, and the compression elastic member 3 is precompressed and has precompressed elastic force F.
The working principle of the motor fixing structure is as follows: when the temperature changes, internal stress or gap is formed due to the difference of thermal expansion coefficients of the materials of the motor 2 and the housing 1, generally, the material of the housing 1 is plastic, the material of the motor 2 is metal, the internal stress is caused by that the shrinkage of the housing 1 is larger than that of the motor 2 at low temperature, the axial length of the housing 1 becomes shorter than that of the motor 2, and the internal stress can be counteracted by the axial gap and the compression elastic member 3. The gap is formed by the fact that the axial deformation size of the motor 2 is smaller than that of the shell 1 under the action of thermal expansion, the gap is enlarged in the axial direction, the increased gap can be offset through the precompressed compression elastic piece 3, meanwhile, the motor 2 is firmly fixed, and vibration caused by the increase of the gap is avoided.
In this embodiment, an axial gap is formed between one end of the motor 2 far away from the output shaft of the motor and the housing 1, and accordingly, two ends of the compression elastic member 3 elastically act on one end of the motor 2 far away from the output shaft and the bottom of the housing 1, respectively, so that the setting of the compression elastic member 3 is facilitated. Of course, the axial gap may be formed between the housing 1 and one end of the motor 2 close to the output shaft, or between the housing 1 and both ends of the motor 2.
In the embodiment, the compression elastic member 3 is a compression spring structure, specifically, a cylindrical compression spring, a conical compression spring, a wave spring, a disc spring, or the like, which are separately disposed in the axial gap. Of course, the compression elastic member 3 may be an elastic rubber as long as it can provide a compression elastic force.
As shown in fig. 3, the present embodiment provides another compression spring structure, which is a plastic compression spring integrally formed with the housing 1, and particularly integrally formed with the bottom of the housing 1. Through the integrated into one piece with casing 1, processing simple to operate.
Further, in the present embodiment, the plastic compression spring includes a plurality of wave-shaped plastic elastic members 31 uniformly distributed along the circumferential direction and a spring stopper 32 located between two adjacent wave-shaped plastic elastic members 31, one end of the wave-shaped plastic elastic member 31 is fixed with the housing 1, the other end is a free end, and the spring stopper 32 is disposed near the free end for restricting movement of the free end.
The waveform plastic elastic piece 31 can be compressed to generate elasticity, and in the compression process, the waveform plastic elastic piece 31 extends, the free end of the waveform plastic elastic piece 31 moves towards the side of the spring limiting block 32, and when the waveform plastic elastic piece moves to the spring limiting block 32, the free end is limited to move, so that the waveform plastic elastic piece 31 is prevented from being deformed continuously, the waveform plastic elastic piece 31 is prevented from being broken due to overlarge deformation, and meanwhile, the free end is limited, so that the elasticity coefficient of the waveform plastic elastic piece 31 can be enhanced, and the elasticity performance is improved.
Further, in the present embodiment, the limiting surface of the spring limiting block 32 is an inclined surface, and an end of the limiting surface near the free end of the corrugated plastic elastic member 31 is lower than an end of the limiting surface far away from the free end. That is, as the wave-shaped plastic elastic member 31 is continuously extended, the free end moves on the limiting surface of the spring limiting block 32, and since the limiting surface is an inclined surface, the free end of the wave-shaped plastic elastic member is gradually limited, and the elastic coefficient is gradually increased.
In the present embodiment, the bottom of the housing 1 and the cylindrical portion of the housing 1 are fixed by laser welding. The material cost of bolts and the like can be saved, and the assembly process is simplified.
The embodiment of the application also provides an electric control actuator for a vehicle, wherein the motor fixing structure described in any embodiment is adopted, and the shell 1 is a shell of the electric control actuator. Therefore, in the automobile environment with larger vibration, impact load and temperature load, the motor 2 and the electric control actuator shell can be better fixed, the influence of internal stress generated by temperature change is reduced, and the phenomenon that the motor is not firmly fixed and vibrates due to a gap generated by temperature change is avoided.
Of course, the motor mounting structure of the present application may also be used in other environments with relatively large vibration, impact and temperature loads.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The motor fixing structure comprises a motor (2) and a shell (1), wherein the motor (2) is arranged in the shell (1), and is characterized in that an axial gap exists between one or two ends of the motor (2) in the axial direction and the shell (1), a compression elastic piece (3) is arranged in the axial gap, two ends of the compression elastic piece (3) respectively elastically act on the motor (2) and the shell (1), and the compression elastic piece (3) is precompressed so as to be used for counteracting the axial internal stress or the axial gap formed by the motor (2) and the shell (1) due to different thermal expansion coefficients;
the compression elastic piece (3) is of a compression spring structure, the compression spring structure is a plastic compression spring integrally formed with the shell (1), the plastic compression spring comprises a plurality of waveform plastic elastic pieces (31) uniformly distributed along the circumferential direction and spring limiting blocks (32) positioned between the waveform plastic elastic pieces (31), one end of the waveform plastic elastic pieces (31) is fixed with the shell (1), the other end of the waveform plastic elastic pieces is a free end, and the spring limiting blocks (32) are arranged close to the free end and are used for limiting the free end;
the limiting surface of the spring limiting block (32) is an inclined surface, and one end, close to the free end, of the limiting surface is lower than one end, far away from the free end, of the limiting surface.
2. A motor fixing structure according to claim 1, characterized in that the axial gap is formed between the end of the motor (2) remote from its output shaft and the housing (1).
3. The motor fixing structure according to claim 1 or 2, characterized in that the bottom of the housing (1) and the cylindrical portion of the housing (1) are fixed by laser welding.
4. An electric control actuator for a vehicle, characterized in that a motor fixing structure as claimed in any one of claims 1 to 3 is adopted, and a housing (1) of the motor fixing structure is a housing of the electric control actuator for a vehicle.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710476385.2A CN107086698B (en) | 2017-06-21 | 2017-06-21 | Electric control actuator and motor fixing structure for vehicle |
| PCT/CN2018/092134 WO2018233658A1 (en) | 2017-06-21 | 2018-06-21 | In-vehicle electric control executor and motor fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710476385.2A CN107086698B (en) | 2017-06-21 | 2017-06-21 | Electric control actuator and motor fixing structure for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107086698A CN107086698A (en) | 2017-08-22 |
| CN107086698B true CN107086698B (en) | 2023-12-15 |
Family
ID=59606986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710476385.2A Active CN107086698B (en) | 2017-06-21 | 2017-06-21 | Electric control actuator and motor fixing structure for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107086698B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018233658A1 (en) * | 2017-06-21 | 2018-12-27 | 中原内配（上海）电子科技有限公司 | In-vehicle electric control executor and motor fixing structure |
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| CN205753852U (en) * | 2016-05-16 | 2016-11-30 | 南昌富亿达电机电器有限公司 | A kind of car generator protector |
| CN205951659U (en) * | 2016-07-22 | 2017-02-15 | 湖北开特汽车电子电器系统股份有限公司 | Air door actuator of automobile air -conditioner |
| CN106640351A (en) * | 2016-10-08 | 2017-05-10 | 上海电控研究所 | Electric control actuator for variable-geometry turbocharging |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4027865A (en) * | 1974-07-24 | 1977-06-07 | Bbc Brown Boveri & Company Limited | Reinforced disk springs |
| JP2003324890A (en) * | 2002-04-26 | 2003-11-14 | Namiki Precision Jewel Co Ltd | Small coreless motor |
| CN2550738Y (en) * | 2002-06-25 | 2003-05-14 | 东南大学 | Temperature compensator for optical fiber grating wave length |
| CN101447711A (en) * | 2008-12-26 | 2009-06-03 | 广东省东莞电机有限公司 | Motor and method for improving running reliability of motor |
| CN102075055A (en) * | 2010-07-22 | 2011-05-25 | 金龙机电股份有限公司 | Micro linear vibration motor |
| CN202719061U (en) * | 2012-08-16 | 2013-02-06 | 刘浩 | Waveform spring and threaded connection device composed of the same |
| CN103706502A (en) * | 2013-12-27 | 2014-04-09 | 梁海军 | Flow regulating device of foaming gun |
| WO2015149208A1 (en) * | 2014-03-31 | 2015-10-08 | 深圳市智行单轴双轮驱动技术有限公司 | Steering motor |
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Also Published As
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|---|---|
| CN107086698A (en) | 2017-08-22 |
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