CN202176693U - Pulley wheel for unidirectional generator clutch - Google Patents
Pulley wheel for unidirectional generator clutch Download PDFInfo
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- CN202176693U CN202176693U CN2011202812725U CN201120281272U CN202176693U CN 202176693 U CN202176693 U CN 202176693U CN 2011202812725 U CN2011202812725 U CN 2011202812725U CN 201120281272 U CN201120281272 U CN 201120281272U CN 202176693 U CN202176693 U CN 202176693U
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- clutch
- roller
- wheel
- wheel hub
- inner ring
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Abstract
The utility model relates to a pulley wheel for a unidirectional generator clutch. A unidirectional clutch device is arranged between a transmission wheel hub (2) and a transmission shaft (9) and comprises a clutch star wheel (4), a retaining frame (5), rollers (6), elastic elements (7) and an inner ring (8); the clutch star wheel (4), the retaining frame (5) and the inner ring (8) are buckled into a whole; 14 volume grooves are arranged on the inner drum wall of the clutch star wheel (4) along the axial direction, the rollers (6) and the elastic elements (7) are arranged in each of the volume grooves, and one end of each of the elastic elements (7) is abutted against the retaining frame (5), and the other end of each of the elastic elements (7) props against the roller (6) so that the roller (6) stays in working position; and the unidirectional clutch device is arranged in a middle hole of the transmission wheel hub (2) and connected with the transmission wheel hub (2) through interference fit with the clutch star wheel (4), the inner ring (8) of the unidirectional clutch device is connected with the transmission shaft (9) through interference fit, and bearings are arranged on the two axial end surfaces of the inner ring respectively. The pulley wheel for the unidirectional generator clutch has the technical effects of reducing the vibration noise of an engine accessory wheel train, improving the service life of a belt, a generator and the like, and the effects can not be poorer due to the use and abrasion of the product; and compared with the traditional roller/ball or special-shaped wedge type unidirectional clutch, the pulley wheel has simple process and low production cost, is stable, reliable and durable, and has the service life which is several to tens of times of that of the traditional unidirectional clutch.
Description
Technical field
The utility model belongs to the vehicle transmission belt pulley, is specifically related to be used for a kind of low subsidiary generator overrunning clutch belt pulley of engine accessory wheel system.
Background technique
Along with the continuous development of automotive engineering, motor car engine progressively develops to little discharge capacity, high-power, dynamical direction.The thing followed, the power of engine accessory wheel system transmission increases greatly.In order to reduce thus problems such as the engine speed fluctuation aggravation that causes, vibrating noise, part life, the overrunning clutch belt pulley is used on the generator.
The free wheel device that traditional generator one-way belt sheave adopts mainly contains two kinds of patterns, and a kind of is wedge surface roller/pearl formula, and a kind of is special-shaped wedge block type.This its theoretical contact position of two kinds of free wheel devicees is a contact or line contact, belongs to the higher pair contact.The contact structures of this higher pair cause in practical work process; Behind the free wheel device transmitting torque; Roller/pearl, special-shaped voussoir are stressed bigger at contact position; Elastic deformation amount radially reaches the radial rigidity deficiency more greatly, thereby causes the difficulty of wearing and tearing, wedging and the disengagement of roller/pearl, special-shaped voussoir to lose efficacy up to final clutch.
Many shortcomings such as it is low that above-mentioned defective makes that the free wheel device of above two kinds of structure types exists bearing capacity, and reliability is low, transmission efficiency is low, friction wear is abominable, the life-span is short.Cause generator after having used this belt pulley; Growth along with service time; The wearing and tearing of product itself; Product is weakening accessory wheel system noise reduction, the function that reduces vibration gradually, and generally the life-span of this series products only have the generator life-span itself 1/3 in addition lower, in the process that car load uses, need often to change.
The model utility content
Be used in the above-mentioned shortcoming that occurs on the generator in order to solve above free wheel device belt pulley; The utility model provides a kind of generator free wheel device belt pulley of lower pair clutch structure, possesses advantages such as high bearing capacity, high rotating speed, high reliability, long lifetime.
It is following that concrete structure improves technological scheme:
A kind of unidirectional generator clutch belt pulley comprises power wheel hub 2 and transmission shaft 9, and power wheel hub 1 is the cylindrical tube shape that axially connects, and an end is provided with cover plate 1, and power wheel hub 2 outer circumferential faces are provided with the frictional groove that cooperates with drivign belt; Its improvement is: be provided with the one-way clutch apparatus between said power wheel hub 2 and the transmission shaft 9, this device comprises clutch star-wheel 4, retainer 5, roller 6, elastic element 7 and inner ring 8; Clutch star-wheel 4, retainer 5 and inner ring 8 spiral-locks are an integral body; Said clutch star-wheel 4 inner tube walls are laid with 14 volume grooves vertically, and roller 6 and elastic element 7 are housed in every volume groove, and elastic element 7 one ends are butted on the retainer 5, and the other end withstands roller 6, makes roller 6 be in the working position; The one-way clutch apparatus is located in the mesopore of power wheel hub 2, is connected with power wheel hub 2 through clutch star-wheel 4 interference fit, and its inner ring 8 interference fit are connected with transmission shaft 9, and its axial both ends of the surface are respectively equipped with bearing;
Said roller 6 is a strip, and its cross section is the irregular quadrilateral with arc angle of attachment; Roller 6 one sides are provided with outer working surface 6a, and the another side is provided with inner working face 6b;
Volume groove groove face on the said clutch star-wheel 4 is provided with wedge surface 4a in the clutch of the work that matches with the outer working surface 6a of roller.
The generator free wheel device belt pulley of the utility model lower pair clutch structure applies on the generator pulley of motor car engine accessory wheel system; Its useful technique effect is to reduce the fluctuation of speed of generator and other accessory components in the engine operation process; Thereby the noise when reducing the motor operation, improve the working life of generator and accessory components and reduce the oil consumption of car load, higher than existing overrun belt pulley reliability simultaneously.Life-span is longer.Concrete useful technique effect embodies in the following areas:
1, possess the existing overrun belt pulley equally to effects such as accessory wheel system and generator damping, noise reduction, belt elevator life-spans, and the effect of damping, noise reduction along with growth, the product of service time wearing and tearing has not appearred and has reduced.
2, possess long working life, the life-span of this product, more traditional roller/pearl formula one-way belt sheave increased several times even ten several times, can reach and equal life-span of generator or higher.
Description of drawings
Fig. 1 is the utility model STRUCTURE DECOMPOSITION figure.
Fig. 2 is the utility model front view.
Fig. 3 is the axial sectional view of Fig. 2.
Fig. 4 is Fig. 2 partial enlarged drawing.
Fig. 5 is roller/pearl formula overrunning clutch belt sheave structure partial enlarged drawing.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description.
As shown in Figure 5; Traditional roller/pearl formula overrunning clutch; The wedging contact position 6A (4A) of its roller 6 is a little with 6B or line contacts; When clutch needs transferring power, can produce certain distortion on the contact position 6A of roller 6 and 6B and the corresponding surface of contact, the small surface of contact that produces through distortion comes transferring power.Therefore, the clutch of this structure can not bear bigger load, the distortion under big load will surpass material yield limit and and the irreversible destruction that produces plasticity, and then cause the one-way element inefficacy.At present; Significantly do not changing under the situation of clutch size; Traditional infrastructure product method of life is mainly improved hardness, yield strength and the wear resistance of material on material and heat treatment process; This has increased the cost of product on the one hand, and heat treatment inevitably will bring distortion on the size also can influence the life-span of product on the other hand.Compare; The one-way element of the low auxiliary structure of the utility model; Because wedging contact position 6a and 6b are the face contact, its area of contact has enlarged hundreds of times even thousands of times compared with the line contact because be out of shape the small surface of contact that produces, thereby allows to transmit sizable load.And be applied on the generator, because transmitted load is very little, the direct stress of relative contact is very little, and is therefore lower to the requirement of material, thereby simplified technology, provides cost savings.
In addition, the one-way element of conventional construction the time will cause clutch to produce an extra deflection angle in distortion, i.e. angle of slide, and this will make clutch in the process of locking that gets loose, deformed region produced repeatedly alternating stress and strain.This deformed region own is exactly the most concentrated zone of clutch configuration stress; On automobile current generator, use; The irregular fluctuation of speed frequency of bent axle output is very high; Reach 30 to 120Hz, under the fluctuation of speed of this frequency, stress and strain repeatedly can cause contact position fatigue failure fast and wearing and tearing.The one-way element of the low auxiliary structure of the utility model has adopted the face contact, and stress and strain is all very little, and does not produce angle of slide basically, thereby under the abominable operating mode of the fluctuation of speed, possesses higher reliability and longer life-span.
Embodiment:
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4; Between power wheel hub 2 and the transmission shaft 9 overrunning clutch is housed; This overrunning clutch comprises clutch star-wheel 4; Be laid with wedge surface 4a in 14 volume grooves and the clutch on its inwall vertically, roller 6 and elastic element 7 all are housed in every volume groove of star-wheel, and roller 6 and elastic element 7 are remained on the working position by retainer 5.Elastic element 7 one ends are butted on the retainer 5, and the other end withstands roller 6, make roller 6 be in the working position, and the outer peripheral surface of wedge surface 4a in its outer working surface 6a and the clutch, inner working face 6b and inner ring 8 formation face respectively contacts.The axial two ends of clutch are respectively equipped with bearing 3a and bearing 3b, and for interference fit is connected, its inner peripheral surface also is connected for interference fit with the outer wall of transmission shaft 9 between the inwall of the outer peripheral surface of bearing and clutch and power wheel hub 2.-----
The working principle of the utility model is following:
When this overrunning clutch belt pulley moves with correct transmission direction; It is power wheel hub 2 clockwise direction when running in Fig. 3; This moment, roller 6 was under the effect of elastic element 7; The outer peripheral surface of wedge surface 4a in the clutch on its outer working surface 6a and the clutch star-wheel 4, inner working face 6b and inner ring 8 is wedging mutually, and this wedging passes to power and transmission shaft 9 by power wheel hub 1, thereby makes one-way belt sheave turn round normally and transmitted load.
When the rotating speed of accessory wheel system fluctuates decline suddenly; The rotating speed of power wheel hub 2 will lower thereupon; But the trend that this moment, transmission shaft 9 moved before under action of inertia, also having, so transmission shaft 9 will be with respect to power wheel hub 2 generation counterrotatings, promptly transmission shaft 9 will be with respect to power wheel hub 2 rotation counterclockwise; This moment, elastic element 7 was compressed; And under action of centrifugal force, roller 6 will be along wedge surface 4a in the clutch with respect to a bit of distance of clutch star-wheel 4 positive movements, and after this wedge surface of the outer peripheral surface of roller inner working face 6b and inner ring 8 composition gets loose; Be in " no power transmission state " between transmission shaft 9 and the power wheel hub 2 this moment, and transmission shaft 9 is in the inertia motion state; When the rotating speed of accessory wheel system from before the decline state that fluctuates become when ging up for fluctuation; The rotating speed of power wheel hub 2 will surmount the transmission shaft 9 of inertia motion this moment; And roller 6 pushed in the wedge surface lockup state before replying, drive transmission shaft 9 and move together thereby return " power transmission state ".
The structure of the utility model lower pair clutch is the surface of contact of conjugation at contact position, and area of contact is big and fretting wear is even, sliding friction when clutch gets loose, only occurs.And along with the appearance of friction, can earlier the irregular place of surface of contact be worn away, making the contact ratio of surface of contact of this conjugation be improved, this is similar to the useful friction of sliding bearing.Aggravation along with abrasion; The wedging position of roller will than under the original state slightly to the elastic element pretension direction segment distance that moves; The change of this distance is ten micron-sized; Therefore the stress machine of the clutch effect that gets loose not have change basically, only faint in theory change the pretightening force of elastic element, but also can ignore.Therefore use this novel clutch belt pulley after working long hours, still can guarantee original performance and higher reliability.
Claims (1)
1. unidirectional generator clutch belt pulley; Comprise power wheel hub (2) and transmission shaft (9); Power wheel hub (1) is the cylindrical tube shape that axially connects, and an end is provided with cover plate (1), and power wheel hub (2) outer circumferential face is provided with the frictional groove that cooperates with drivign belt; It is characterized in that: be provided with the one-way clutch apparatus between said power wheel hub (2) and the transmission shaft (9), this device comprises clutch star-wheel (4), retainer (5), roller (6), elastic element (7) and inner ring (8); Clutch star-wheel (4), retainer (5) and inner ring (8) spiral-lock are an integral body; Said clutch star-wheel (4) inner tube wall is laid with 14 volume grooves vertically; Roller (6) and elastic element (7) are housed in every volume groove; Elastic element (7) one ends are butted on the retainer (5), and the other end withstands roller (6), make roller (6) be in the working position; The one-way clutch apparatus is located in the mesopore of power wheel hub (2), is connected with power wheel hub (2) through clutch star-wheel (4) interference fit, and its inner ring (8) interference fit is connected with transmission shaft (9), and its axial both ends of the surface are respectively equipped with bearing;
Said roller (6) is a strip, and its cross section is the irregular quadrilateral with arc angle of attachment; Roller (6) one sides are provided with outer working surface (6a), are provided with working surface (6b) in the another side;
Volume groove groove face on the said clutch star-wheel (4) is provided with wedge surface (4a) in the clutch of the work that matches with the outer working surface (6a) of roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202812725U CN202176693U (en) | 2011-08-04 | 2011-08-04 | Pulley wheel for unidirectional generator clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202812725U CN202176693U (en) | 2011-08-04 | 2011-08-04 | Pulley wheel for unidirectional generator clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202176693U true CN202176693U (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202812725U Expired - Fee Related CN202176693U (en) | 2011-08-04 | 2011-08-04 | Pulley wheel for unidirectional generator clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202176693U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806658A (en) * | 2014-01-28 | 2015-07-29 | 本田技研工业株式会社 | One-way clutch and crank-type continuously-variable transmission |
| CN110249161A (en) * | 2016-11-15 | 2019-09-17 | 哈金森公司 | Non-coupled pulley |
-
2011
- 2011-08-04 CN CN2011202812725U patent/CN202176693U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806658A (en) * | 2014-01-28 | 2015-07-29 | 本田技研工业株式会社 | One-way clutch and crank-type continuously-variable transmission |
| CN110249161A (en) * | 2016-11-15 | 2019-09-17 | 哈金森公司 | Non-coupled pulley |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEFEI JIASUN TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HEFEI JIASUN PRECISION MACHINERY CO., LTD. Effective date: 20120705 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 230088 NO.105, RESEARCH AND DEVELOPMENT CENTER, GONGCHENGJISHU CO., LTD., HEFEIGONGDA AUTO, NO.252, WANSHUI ROAD, HEFEI CITY HIGH-TECH ZONE, ANHUI PROVINCE TO: 230088 HOUSE 2, BUILDING F, HUAYIKEXUEYUAN, NO.71, TIANDA ROAD, HEFEI CITY HIGH-TECH ZONE, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120705 Address after: Tianda high tech Zone 230088 Hefei Road, Anhui province No. 71 Huayi Science Park F building two floor Patentee after: Hefei Jiasun Technology Co., Ltd. Address before: 230088, No. 105, Anhui waterway, 252 hi tech Zone, Anhui, Hefei, Hefei automotive engineering technology research and Development Center Patentee before: Hefei Jiaxun Precision Machinery Manufacturing Co.,Ltd. |
|
| 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: 20120328 Termination date: 20180804 |