CN201594769U - Alternating current generator noise reduction structure - Google Patents
Alternating current generator noise reduction structure Download PDFInfo
- Publication number
- CN201594769U CN201594769U CN2009203146300U CN200920314630U CN201594769U CN 201594769 U CN201594769 U CN 201594769U CN 2009203146300 U CN2009203146300 U CN 2009203146300U CN 200920314630 U CN200920314630 U CN 200920314630U CN 201594769 U CN201594769 U CN 201594769U
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- blade tooth
- alternating current
- claw
- noise
- chamfer
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- 210000000078 claw Anatomy 0.000 abstract description 12
- 238000000926 separation method Methods 0.000 abstract 1
- 210000000515 tooth Anatomy 0.000 description 29
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model discloses an alternating current generator noise reduction structure capable of reducing noise of a car alternating current generator, comprising a motor rotor on which a pair of claw poles are arranged, and chamfers are symmetrically arranged along the circumference of each claw tooth of the pair of claw poles; the angle of the chamfer, i.e. the included angle between the position of the claw tooth chamfer and the middle separation surface of the claw tooth, is in the range of 103-115 degrees, and the chamfer has the width of 2.7-3.3 mm; and the chamfer gradually increases from the root part of the claw tooth to the tip part of the claw tooth, and the width of the chamfer gradually reduces from the root part of the claw tooth to the tip part of the claw tooth. With the treatment of the claw tooth chamfers of the claw poles of the rotor, part of electromagnetic noise of the generator can be eliminated so that the noise of the generator can be well reduced, thereby meeting the requirement for environment protection in automobile industry. The novel noise reduction structure is mainly used on the rotor of an alternating current motor.
Description
Technical field
The utility model relates to a kind of motorcar alternator, especially a kind of alternating current generator denoising structure.
Background technology
Reduce noise and be now whole automobile industry do not stop one of target of pursuing, reduced noise and equaled to have improved comfort level, what bring then is satisfaction.
The noise that motorcar alternator produced is mainly from following aspect: the one, and electromagnetic noise, the 2nd, machinery noise, the 3rd, aerodynamic noise.Definite main cause that produces preceding two aspect noises all follows the vibration of motor relevant, and vibration is the source of noise, the mechanical imbalance of rotor can produce significant vibration, on the mechanical imbalance of rotor is mainly reflected in rotor dynamic balancing and beats, because rotor dynamic balancing and beat overproof, cause generator not steady when low cruise, and motor has electromagnetic force to produce when generating, electromagnetic force acts on fixed, in the air gap between rotor, produce rotation Reeb or pulsation Reeb, make stator produce vibration and the radiation noise, rotor dynamic balancing and the beating of rotor of therefore controlling generator are a kind of main method of electromagnetic noise when controlling generator low speed.Because of automobile industry competition at present is growing more intense,, just can further increase product competitiveness if can further reduce the noise of motorcar alternator.
Existing generator amature comprises a pair of pawl utmost point, and each pawl has six pieces of blade tooths on extremely, and two pawls are extremely coaxial to be symmetrical arranged, and blade tooth is relatively staggered, and the blade tooth position does not have chamfering corresponding to the coil windings position on the stator on the blade tooth.
The utility model content
In order to overcome the existing still bigger deficiency of motorcar alternator noise, further reduce the electromagnetic noise of alternating current generator, technical problem to be solved in the utility model provides a kind of alternating current generator denoising structure that can effectively reduce the motorcar alternator noise.The new construction of this noise reduction is mainly used on the rotor of alternating current generator.
The technical scheme that its technical problem that solves the utility model adopts is: the alternating current generator denoising structure, comprise generator amature, and rotor is provided with a pair of pawl utmost point, is symmetrically arranged with chamfering along this each blade tooth periphery to the pawl utmost point.
What is called is symmetrical arranged, and promptly pawl is extremely gone up identical, the size unanimity of chamfer shape of each blade tooth.
The corner dimension of the angle of described chamfering that is blade tooth chamfer site and blade tooth split is between 103 °～115 °, the chamfering width is 2.7～3.3mm, the chamfering size is increased to the blade tooth tip gradually by the blade tooth root, and the chamfering width is dwindled to the blade tooth tip gradually by the blade tooth root.
The beneficial effects of the utility model are: by the blade tooth chamfered to the rotor claw utmost point, can eliminate the part electromagnetic noise, make generator better reduce noise, thereby adapt to the environmental requirement of automobile industry.
Description of drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is an axonometric drawing of the present utility model.
Fig. 3 is the noise testing figure that uses the preceding generator of the utility model.
Fig. 4 is the noise testing figure of generator behind application the utility model.
Among Fig. 3 and Fig. 4, its abscissa is a generator speed, and its ordinate is the noise decibel value.
Be labeled as 1-rotor, 2-blade tooth, 3-blade tooth chamfer site, the 11-pawl utmost point, the 12-pawl utmost point, 20-blade tooth split, 21-blade tooth root, 22-blade tooth tip among the figure.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1 and Figure 2, alternating current generator denoising structure of the present utility model, comprise generator amature 1, rotor 1 is provided with a pair of pawl utmost point 11,12, be symmetrically arranged with chamfering along these each blade tooth 2 peripheries to the pawl utmost point 11,12, promptly the chamfer shape of each blade tooth 2 is identical on the pawl utmost point 11,12, size is consistent.The pawl utmost point is carried out alternating current generator after the chamfered, the high order harmonic component that normal operation is produced is less, generator vibration in the running also just relatively reduces like this, promptly can be by the chamfering of pawl utmost point blade tooth be eliminated the part electromagnetic noise, thus reach the purpose that reduces noise.
Geomery according to general generator blade tooth, the angle of described chamfering that is blade tooth chamfer site 3 are 103 °～115 ° with the scope of blade tooth split 20 angles, the chamfering width generally is being 2.7～3.3mm, and in, the chamfering size is increased to blade tooth tip 22 gradually by blade tooth root 21, the chamfering width is dwindled to blade tooth tip 22 gradually by blade tooth root 21, and the high order harmonic component after the chamfering obviously reduces like this.
Embodiment:
As shown in Figure 1 and Figure 2, utilize the utility model to carry out chamfered to motorcar alternator.Each blade tooth 2 chamfered to a pair of pawl utmost point 11,12 of its rotor 1, the chamfer shape of each blade tooth 2 is identical, size is consistent, the corner dimension of the angle of described chamfering that is blade tooth chamfer site 3 and blade tooth split 20 is between 103 °～115 °, the chamfering size is increased to blade tooth tip 22 gradually by blade tooth root 21, and the chamfering width is dwindled to blade tooth tip 22 gradually by blade tooth root 21.
Alternating current generator before and after improving is carried out noise testing, improve preceding noise testing figure as shown in Figure 3, the noise testing figure after the improvement as shown in Figure 4.Comparison diagram 3 and Fig. 4 as can be seen, the high order harmonic component after the improvement obviously reduces.The utility model can effectively reduce the noise of motorcar alternator.
Claims (2)
1. the alternating current generator denoising structure comprises generator amature (1), and rotor (1) is provided with a pair of pawl utmost point (11,12), it is characterized in that: be symmetrically arranged with chamfering along this each blade tooth (2) periphery to the pawl utmost point (11,12).
2. alternating current generator denoising structure as claimed in claim 1, it is characterized in that: the corner dimension of the angle of described chamfering that is blade tooth chamfer site (3) and blade tooth split (20) is between 103 °～115 °, the chamfering width is 2.7～3.3mm, the chamfering size is increased to blade tooth tip (22) gradually by blade tooth root (21), and the chamfering width is dwindled to blade tooth tip (22) gradually by blade tooth root (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203146300U CN201594769U (en) | 2009-11-12 | 2009-11-12 | Alternating current generator noise reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203146300U CN201594769U (en) | 2009-11-12 | 2009-11-12 | Alternating current generator noise reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594769U true CN201594769U (en) | 2010-09-29 |
Family
ID=42776834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203146300U Expired - Fee Related CN201594769U (en) | 2009-11-12 | 2009-11-12 | Alternating current generator noise reduction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201594769U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361174A (en) * | 2014-11-19 | 2015-02-18 | 芜湖杰诺瑞汽车电器系统有限公司 | Noise simulating calculation method for automotive alternating current generator |
| CN106877606A (en) * | 2017-04-28 | 2017-06-20 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN106877605A (en) * | 2017-04-28 | 2017-06-20 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN106899157A (en) * | 2017-04-28 | 2017-06-27 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN106936280A (en) * | 2017-04-28 | 2017-07-07 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN107070149A (en) * | 2017-04-28 | 2017-08-18 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN108292869A (en) * | 2015-12-01 | 2018-07-17 | 法雷奥电机设备公司 | It is provided with the pawl pole rotor of the electric rotating machine of at least one chamfering formed on the rear of pawl |
| CN108292877A (en) * | 2015-11-24 | 2018-07-17 | 法雷奥电机设备公司 | Rotating electrical machine for a motor vehicle |
-
2009
- 2009-11-12 CN CN2009203146300U patent/CN201594769U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361174A (en) * | 2014-11-19 | 2015-02-18 | 芜湖杰诺瑞汽车电器系统有限公司 | Noise simulating calculation method for automotive alternating current generator |
| CN108292877A (en) * | 2015-11-24 | 2018-07-17 | 法雷奥电机设备公司 | Rotating electrical machine for a motor vehicle |
| CN108292869A (en) * | 2015-12-01 | 2018-07-17 | 法雷奥电机设备公司 | It is provided with the pawl pole rotor of the electric rotating machine of at least one chamfering formed on the rear of pawl |
| CN108292869B (en) * | 2015-12-01 | 2020-03-03 | 法雷奥电机设备公司 | Claw-pole rotor of a rotating electrical machine provided with at least one chamfer formed on the trailing edge of the claw |
| CN106877606A (en) * | 2017-04-28 | 2017-06-20 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN106877605A (en) * | 2017-04-28 | 2017-06-20 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN106899157A (en) * | 2017-04-28 | 2017-06-27 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN106936280A (en) * | 2017-04-28 | 2017-07-07 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN107070149A (en) * | 2017-04-28 | 2017-08-18 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
| CN106899157B (en) * | 2017-04-28 | 2023-07-18 | 上海法雷奥汽车电器系统有限公司 | Automotive alternating-current generator |
| CN106877606B (en) * | 2017-04-28 | 2023-10-13 | 上海法雷奥汽车电器系统有限公司 | Automotive alternating-current generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20171112 |