CN101936377B - One-way belt pulley - Google Patents
One-way belt pulley Download PDFInfo
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- CN101936377B CN101936377B CN201010273852XA CN201010273852A CN101936377B CN 101936377 B CN101936377 B CN 101936377B CN 201010273852X A CN201010273852X A CN 201010273852XA CN 201010273852 A CN201010273852 A CN 201010273852A CN 101936377 B CN101936377 B CN 101936377B
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Abstract
The invention relates to a one-way belt pulley, in particular to a one-way belt pulley arranged on a transmission shaft of an AC generator and permitting the speed of the belt pulley to be fluctuant relative to the transmission shaft of the AC generator due to the speed fluctuation of a motor. The one-way belt pulley comprises the belt pulley, a mandrel, a torque spring, a friction spring, a thrust washer and a retainer, wherein the torque spring is sleeved on the mandrel; one end of the friction spring is provided with a bending part; the retainer is provided with a groove matched with the bending part; the bending part of the friction spring is embedded into the groove of the retainer; an outer ring of the torque spring is sleeved with a plastic spacer; the plastic spacer is provided with axial elongated slots which are uniformly distributed along circumference direction and used for eliminating resonance generated during the work of the belt pulley; and the friction spring is wound on the plastic spacer. The invention can eliminate the resonance generated during the work of the AC generator and prolong the service life of the one-way belt pulley.
Description
Technical field
The present invention relates to a kind of one-way belt sheave, particularly a kind of being installed on the alternator transmission shaft allows the speed of belt pulley because engine speed fluctuations is former thereby with respect to the one-way belt sheave of alternator transmission shaft fluctuation.
Background technique
Single-way belt pulley of automobile generator comes from Germany, and American-European in the world at present car is, Japan and Korea S car system uses more.The generator one-way belt sheave has OAP/OAD/OWC etc. according to the structure difference, and the producer that produces this belt pulley in the world is main with INA, Leiden, Gates, NSK, NTN, KOYO etc.The main effect of single-way belt pulley of automobile generator is: 1, reduce the fluctuation of front end train tension force, improve each part life of front end train; 2, reduce the fluctuation of speed of front end train, reduce the noise of front end train; 3, avoid reverse impact, effectively protect generator; 4, reduce the energy consumption that the generator counter-rotating causes, energy saving.Wherein, OAD is that application is more in the car in U.S.A, and it can filter at a high speed and shake, and also can filter low speed vibration, and its structure is following: comprise wheel hub, wheel hub is fixedly mounted on the transmission shaft.Wheel hub has opposed first end and second end and the cylindrical body of the axially extended cardinal principle of between, and first flange of an annular is adjacent to second end and radially stretches out from body.First flange comprises outer flange surface, and the outer diameter of this ledge surface is greater than body, and an annular surface radially extends between body and outer flange surface substantially, and is relative with second end.In annular surface, form spiral substantially first groove.One carriage is rotatably installed on the wheel hub.Carriage comprises spiral second groove that is formed in it.One torsion spring extends between hub end and the carrier end; In order to transmitting torque between wheel hub and carriage; Wherein, hub end is maintained in spiral first groove, in order to relative movement between the hub end that prevents torsion spring and the wheel hub; Carrier end is maintained in spiral second groove, in order to relative movement between the carrier end that prevents torsion spring and the carriage.One belt pulley is rotationally attached to wheel hub.Belt pulley comprises an outer surface, this outer surface design with the drive belt friction engagement.Said belt pulley has the internal surface that is formed at wherein.One clutch spring is fastened on the carriage and has many spiral spring coils, and the internal surface friction engagement of these spring coils and belt pulley connects wheel hub and belt pulley with selectivity.Torsion spring and clutch spring along opposite steering wheel around; Make during belt pulley is with respect to the wheel hub acceleration; Clutch spring expansion and with the clamping engagement of internal surface, and during belt pulley is with respect to hub reduction, clutch spring shrinks and breaks away from the clamping engagement with internal surface.The OAD of this structure can not eliminate the resonance that is produced in the alternator work, and the resonance that is produced in the alternator work can make the torsion spring fracture, thereby one-way belt sheave was lost efficacy in advance.The response time of the OAD of this structure is long at interval, and the first flange manufacturing process of its wheel hub is complicated in addition.
Summary of the invention
The technical problem that the present invention will solve is: the present invention provides a kind of one-way belt sheave, and it can eliminate the resonance that is produced in the alternator work, improves the working life of one-way belt sheave.
The technical solution adopted for the present invention to solve the technical problems is: a kind of one-way belt sheave; Have belt pulley, mandrel, torsion spring, friction spring, thrust washer and retainer; Torsion spring is sleeved on the mandrel; Described friction spring comprises kink and spring coil, and retainer has the groove that matches with kink, and the kink of friction spring is flush-mounted in the groove of retainer; The torsion spring outer ring is set with the plastics spacer, and the plastics spacer has the axial elongated slot of resonance circumference uniform distribution, that produce when being used to eliminate belt pulley work; Friction spring is wound on the spacer.The resonance that produces in the one-way belt sheave work passes to the plastics spacer by torsion spring, and the plastics spacer passes to friction spring again, and friction spring is passed to belt pulley, thereby eliminates the resonance that produces in the one-way belt sheave work.
For improving the working life of one-way belt sheave, friction spring one end is remained in the retainer reliably, torsion spring is reliably contacted with retainer, described retainer is the irony retainer.
For shortening the response time of one-way belt sheave; The projection of circumference uniform distribution more than two on the described retainer inner headed face has spacing convex shoulder in the axis body portion of described mandrel, and the projection place corresponding to retainer on the spacing convex shoulder is fluted; The groove of the axis body portion of the projection of retainer and mandrel matches; Retainer is positioned between torsion spring and spacing convex shoulder, and thrust washer is installed on the mandrel against retainer, and the retainer end face has positioning groove; The thrust washer end face has positioning convex; Positioning convex on the thrust washer is positioned at the positioning groove of retainer end face, and the locating bump that the groove on the thrust washer inner headed face on circumference uniform distribution and the mandrel matches, locating bump are inlaid in the groove of mandrel.
Further; For effectively avoiding retainer to move axially with respect to mandrel; Thrust washer is with respect to the mandrel rotational; The groove width of each groove on the described mandrel is inequality, and the width of each projection on the retainer and each locating bump on the thrust washer are suitable with the width of its corresponding groove respectively.In the one-way belt sheave working procedure; Have only when each projection on the retainer just in time with mandrel on the groove location of its corresponding width when overlapping fully; Axial displacement just can take place in retainer under the stressed effect on mandrel; Because the width of each projection is different, and nothing relatively rotates between thrust washer and mandrel, and the positioning convex on the thrust washer is positioned at the positioning groove on the retainer; In the one-way belt sheave working procedure, the projection on the retainer can not overlap with its corresponding groove position of mandrel fully and the restriction of throwing off spacing convex shoulder is outwards moved vertically.
For making one-way belt sheave structure simple; Simple for production; Reduce fabricating cost; The end face that described retainer contacts with torsion spring is made up of first helicoid and one section plane, and this end face has first positioning step, and the end face that the flange part of mandrel links to each other with axis body portion has second helicoid and has second positioning step; Torsion spring one end is torsion spring spring silk first end face against first helicoid of retainer, the end face of this end spring silk, and torsion spring spring silk first end face is against first positioning step; The torsion spring end face also is made up of one section helicoid and plane; Therefore fit fully in the end face of torsion spring and first helicoid and the plane of retainer; Torsion spring spring silk first end face is against first positioning step; Prevent that torsion spring from moving with respect to retainer, the other end of torsion spring is torsion spring spring silk second end face against second helicoid of mandrel, the end face of this end spring silk, and torsion spring spring silk second end face is against second positioning step.Mandrel adopts the thermal forging technology once-through, and manufacturing process is compared with the wheel hub of existing alternator, and is much easy.
For making between mandrel and belt pulley reliable supporting is arranged, between the axis body portion of described mandrel and belt pulley internal surface first ball bearing is housed, between the flange part outer surface of described mandrel and belt pulley internal surface second ball bearing is housed.
The invention has the beneficial effects as follows: one-way belt sheave of the present invention, can effectively eliminate the resonance that produces in the alternator work, improve the working life of one-way belt sheave, response is timely, and simple in structure, the mandrel manufacturing process is simple, and is easy to assembly.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the structural representation of the specific embodiment of one-way belt sheave of the present invention.
Fig. 2 is the structural representation of the mandrel among the present invention.
Fig. 3 is the right elevation of Fig. 2.
Fig. 4 is the structural representation of the torsion spring among the present invention.
Fig. 5 is the structural representation of the friction spring among the present invention.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the structural representation of the thrust washer among the present invention.
Fig. 8 is the A-A sectional view of Fig. 7.
Fig. 9 is the stereogram of the thrust washer among the present invention.
Figure 10 is the structural representation of the retainer among the present invention.
Figure 11 is the left view of Figure 10.
Figure 12 is the right elevation of Figure 10.
Figure 13 is the B-B sectional view of Figure 12.
Figure 14 is the C-C sectional view of Figure 12.
Figure 15 is the structural representation of the plastics spacer among the present invention.
Figure 16 is the D-D sectional view of Figure 13.
Among the figure: 1. belt pulley, 2. mandrel, 2-1. flange part, 2-2. axis body portion, 2-2-1. groove, the spacing convex shoulder of 2-2-2.; 2-3. second helicoid, 2-4. second positioning step, 3. torsion spring, 3-1. torsion spring spring silk first end face, 3-2. torsion spring spring silk second end face, 4. friction spring; 4-1. kink, 4-2. spring coil, 5. thrust washer, 5-1 positioning convex, 5-2. locating bump, 6. retainer; 6-1. groove, 6-2. projection, 6-3. first helicoid, 6-4. first positioning step, 6-5. positioning groove; 6-6. the plane, 7. plastics spacer, the axial elongated slot of 7-1., 8. first ball bearing, 9. second ball bearing.
Embodiment
The specific embodiment of the one-way belt sheave of the present invention shown in Fig. 1～16; Have belt pulley 1, mandrel 2, torsion spring 3, friction spring 4, thrust washer 5 and retainer 6; Mandrel 2 has flange part 2-1 and the 2-2 of axis body portion, and torsion spring 3 is sleeved on the 2-2 of axis body portion of mandrel 2, and friction spring 4 comprises kink 4-1 and spring coil 4-2; Retainer 6 has the groove 6-1 that matches with kink 4-1; The kink 4-1 of friction spring 4 is flush-mounted in the groove 6-1 of retainer 6, and torsion spring 3 outer rings are set with plastics spacer 7, and plastics spacer 7 has ten axial elongated slot 7-1 of resonance circumference uniform distribution, that produce when being used to eliminate belt pulley work; Friction spring 4 is wound on the plastics spacer 7.
Retainer 6 is the irony retainer; Three projection 6-2 of circumference uniform distribution on retainer 6 inner headed faces; The width of each projection 6-2 on the retainer 6 is inequality; Have spacing convex shoulder 2-2-2 on the 2-2 of axis body portion of mandrel 2, spacing convex shoulder 2-2-2 goes up the fluted 2-2-1 in projection 6-2 place corresponding to retainer 6, and the width of the projection 6-2 that the groove width of each the groove 2-2-1 on the mandrel 2 is corresponding with it is suitable.Thrust washer 5 is installed on the mandrel 2 against retainer 6, and retainer 6 end faces have positioning groove 6-5, and thrust washer 5 end faces have positioning convex 5-1, and the positioning convex 5-1 on the thrust washer 5 is positioned at the positioning groove 6-5 of retainer 6 end faces.Three locating bump 5-2 of circumference uniform distribution on thrust washer 5 inner headed faces, the projection 6-2 of the width of locating bump 5-2 and retainer 6 is consistent, and is all suitable with the groove 2-2-1 of the 2-2 of axis body portion of mandrel 2.During assembling; After installing torsion spring 3; After the corresponding identical groove 2-2-1 of groove width on the projection 6-2 of retainer 6 and the mandrel 2 aimed at, it is inboard that retainer 6 is press fit into mandrel 2 upper limit convex shoulder 2-2-2, three locating bump 5-2 on thrust washer 5 inner headed faces packed among the groove 2-2-1 that corresponding groove width is identical on the mandrel 2 again; Spacing convex shoulder 2-2-2 restriction retainer 6 moves axially with respect to mandrel 2, and spacing convex shoulder 2-2-2 restriction thrust washer 5 is with respect to mandrel 2 rotational.
The end face that retainer 6 contacts with torsion spring 3 is made up of the first helicoid 6-3 and one section plane 6-6; And this end face has the first positioning step 6-4, and the end face that the flange part 2-1 of mandrel 2 links to each other with the 2-2 of axis body portion has the second helicoid 2-3 and has the second positioning step 2-4; Torsion spring 3 one ends are the torsion spring spring silk first end face 3-1 against the first helicoid 6-3 of retainer 6, the end face of this end spring silk; The torsion spring spring silk first end face 3-1 is against the first positioning step 6-4; Prevent that torsion spring 3 is with respect to retainer 6 motions; The other end of torsion spring 3 is the torsion spring spring silk second end face 3-2 against the second helicoid 2-3 of mandrel 2, the end face of this end spring silk; The torsion spring spring silk second end face 3-2 prevents that against the second positioning step 2-4 torsion spring 3 is with respect to mandrel 2 motions.
Between the 2-2 of axis body portion of mandrel 2 and belt pulley 1 internal surface first ball bearing 8 is housed, between the flange part 2-1 outer surface of mandrel 2 and belt pulley 1 internal surface second ball bearing 9 is housed.
Claims (4)
1. one-way belt sheave; Have belt pulley (1), mandrel (2), torsion spring (3), friction spring (4), thrust washer (5) and retainer (6); Described mandrel (2) has flange part (2-1) and axis body portion (2-2); Torsion spring (3) is sleeved in the axis body portion (2-2) of mandrel (2); Described friction spring (4) comprises kink (4-1) and spring coil (4-2), and retainer (6) has the groove (6-1) that matches with kink (4-1), and the kink (4-1) of friction spring (4) is flush-mounted in the groove (6-1) of retainer (6); It is characterized in that: described torsion spring (3) outer ring is set with plastics spacer (7), and plastics spacer (7) has the axial elongated slot (7-1) of resonance circumference uniform distribution, that produce when being used to eliminate belt pulley work; Friction spring (4) is wound on the plastics spacer (7); Described retainer (6) is the irony retainer; The projection (6-2) of circumference uniform distribution more than two on described retainer (6) inner headed face; Has spacing convex shoulder (2-2-2) in the axis body portion (2-2) of described mandrel (2); Spacing convex shoulder (2-2-2) is gone up and is located fluted (2-2-1) corresponding to the projection (6-2) of retainer (6); The projection (6-2) of retainer (6) matches with the groove (2-2-1) of the axis body portion (2-2) of mandrel (2); Retainer (6) is positioned between torsion spring (3) and spacing convex shoulder (2-2-2); Thrust washer (5) is installed on the mandrel (2) against retainer (6); Retainer (6) end face has positioning groove (6-5), and thrust washer (5) end face has positioning convex (5-1), and the positioning convex (5-1) on the thrust washer (5) is positioned at the positioning groove (6-5) of retainer (6) end face; The locating bump (5-2) that groove (2-2-1) on thrust washer (5) inner headed face on circumference uniform distribution and the mandrel (2) matches, locating bump (5-2) are inlaid in the groove (2-2-1) of mandrel.
2. one-way belt sheave according to claim 1; It is characterized in that: the groove width of each groove (2-2-1) on the described mandrel (2) is inequality, and width and each locating bump on the thrust washer (5) of each projection (6-2) on the retainer (6) are suitable with the width of its corresponding groove (2-2-1) respectively.
3. one-way belt sheave according to claim 1; It is characterized in that: the end face that described retainer (6) contacts with torsion spring (3) is made up of first helicoid (6-3) and one section plane (6-6); And this end face has first positioning step (6-4), and the end face that the flange part (2-1) of mandrel (2) links to each other with axis body portion (2-2) has second helicoid (2-3) and has second positioning step (2-4); Torsion spring (3) one ends are torsion spring spring silk first end face (3-1) against first helicoid (6-3) of retainer (6), the end face of this end spring silk; Torsion spring spring silk first end face (3-1) is against first positioning step (6-4); The other end of torsion spring (3) is torsion spring spring silk second end face (3-2) against second helicoid (2-3) of mandrel (2), the end face of this end spring silk, and torsion spring spring silk second end face (3-2) is against second positioning step (2-4).
4. one-way belt sheave according to claim 1; It is characterized in that: between the axis body portion (2-2) of described mandrel (2) and belt pulley (1) internal surface first ball bearing (8) is housed, between flange part (2-1) outer surface of described mandrel (2) and belt pulley (1) internal surface second ball bearing (9) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010273852XA CN101936377B (en) | 2010-09-07 | 2010-09-07 | One-way belt pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010273852XA CN101936377B (en) | 2010-09-07 | 2010-09-07 | One-way belt pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101936377A CN101936377A (en) | 2011-01-05 |
| CN101936377B true CN101936377B (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010273852XA Active CN101936377B (en) | 2010-09-07 | 2010-09-07 | One-way belt pulley |
Country Status (1)
| Country | Link |
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| CN (1) | CN101936377B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182749A (en) * | 2011-04-21 | 2011-09-14 | 江苏南方轴承股份有限公司 | Decoupler mandrel capable of preventing force conducted interference and decoupler using the same |
| CN102305251B (en) * | 2011-08-25 | 2014-07-23 | 江苏南方轴承股份有限公司 | Composite retainer for decoupler pulley and decoupler pulley |
| CN108087450A (en) * | 2017-12-25 | 2018-05-29 | 台州振鹏单向器有限公司 | A kind of damper pulley of roller type one way coupling |
| CN109838473A (en) * | 2019-03-25 | 2019-06-04 | 常州博立汽车科技有限公司 | One kind surmounting decoupler |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19843946A1 (en) * | 1997-09-24 | 1999-03-25 | Koyo Seiko Co | Belt pulley unit for seat belt of vehicle |
| US6083130A (en) * | 1997-05-07 | 2000-07-04 | Litens Automotive Partnership | Serpentine drive system with improved over-running alternator decoupler |
| CN201401494Y (en) * | 2009-04-09 | 2010-02-10 | 李志敏 | Automobile generator one-way belt pulley |
| CN201779233U (en) * | 2010-09-07 | 2011-03-30 | 江苏南方轴承股份有限公司 | One-way belt pulley |
-
2010
- 2010-09-07 CN CN201010273852XA patent/CN101936377B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6083130A (en) * | 1997-05-07 | 2000-07-04 | Litens Automotive Partnership | Serpentine drive system with improved over-running alternator decoupler |
| DE19843946A1 (en) * | 1997-09-24 | 1999-03-25 | Koyo Seiko Co | Belt pulley unit for seat belt of vehicle |
| CN201401494Y (en) * | 2009-04-09 | 2010-02-10 | 李志敏 | Automobile generator one-way belt pulley |
| CN201779233U (en) * | 2010-09-07 | 2011-03-30 | 江苏南方轴承股份有限公司 | One-way belt pulley |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101936377A (en) | 2011-01-05 |
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Address after: 213000 Longxiang Road, Wujin high tech Development Zone, Changzhou City, Jiangsu Province Patentee after: Jiangsu Nanfang Precision Industry Co.,Ltd. Address before: 213164 No. 9, Longxiang Road, high tech Development Zone, Wujin District, Changzhou City, Jiangsu Province Patentee before: Jiangsu Nanfang Bearing Co.,Ltd. |
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