CN110805668A - Plane scroll spring tensioning wheel with asymmetric damping - Google Patents
Plane scroll spring tensioning wheel with asymmetric damping Download PDFInfo
- Publication number
- CN110805668A CN110805668A CN201911199667.8A CN201911199667A CN110805668A CN 110805668 A CN110805668 A CN 110805668A CN 201911199667 A CN201911199667 A CN 201911199667A CN 110805668 A CN110805668 A CN 110805668A
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- Prior art keywords
- spring
- damping
- support arm
- damping fin
- sleeve
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- 238000013016 damping Methods 0.000 title claims abstract description 94
- 239000013013 elastic material Substances 0.000 claims abstract description 6
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000012858 resilient material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 10
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/0829—Means for varying tension of belts, ropes, or chains with vibration damping means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/0829—Means for varying tension of belts, ropes, or chains with vibration damping means
- F16H7/0838—Means for varying tension of belts, ropes, or chains with vibration damping means of the dissipating material type, e.g. elastomeric spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/081—Torsion springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0863—Finally actuated members, e.g. constructional details thereof
Abstract
An asymmetric damping plane spiral spring tension wheel. The invention relates to the field of belt tensioning pulleys. Aiming at the problems, the invention provides the planar spiral spring tensioning wheel which is exquisite in structure, good in stability and good in using effect. The technical scheme of the invention is as follows: comprises a belt pulley, a support arm, a central shaft, a spring washer, a volute spiral spring and a spring support sleeve; the tensioning wheel further comprises a damping mechanism, the damping mechanism comprises an end cover and a damping fin, the damping fin is attached to one side end face of the support arm, back to the shaft sleeve, the end cover is fixedly connected with one end, far away from the spring support sleeve, of the center shaft, the end cover is made of elastic materials and is connected with the damping fin, and axial positive pressure is provided for the damping fin through the end cover. Have the structure exquisiteness on the whole, stability is good and excellent in use effect's advantage.
Description
Technical Field
The invention relates to the field of belt tensioning pulleys.
Background
At present, most traditional flat spiral spring take-up pulley is as shown in the chinese utility model patent of "novel integral type belt take-up pulley", application number "201820472855.8" that the country was announced in 2019 2 month 1 day, for providing the damping, has set up belleville spring, antifriction plate and panel wherein (being the end cover), provides axial normal pressure through belleville spring pre-compaction deformation to make the antifriction plate provide damping force at support arm swing in-process. However, in such a structure, the compression amount of the belleville spring is fixed, so the damping during the forward and reverse swinging of the tension wheel, namely the loading and unloading processes, is equal, and is symmetrical damping. Symmetric damping in a tensioning wheel usually has a certain risk, namely, when the damping value reaches a certain degree (generally exceeding 50 percent), the phenomenon of non-recovery is easy to occur, and the output torque is insufficient, so that the phenomenon of slippage caused by insufficient belt tension in a wheel train is caused.
Disclosure of Invention
Aiming at the problems, the invention provides the plane volute spiral spring tensioning wheel with asymmetric damping, which has the advantages of exquisite structure, good stability and good use effect, and effectively solves various defects caused by symmetric damping through asymmetric damping.
The technical scheme of the invention is as follows: the belt wheel is hinged to one side of the support arm, the central shaft penetrates through the other side of the support arm, and a shaft sleeve is arranged on the end face of one side of the support arm and is sleeved with the central shaft and connected with the support arm into a whole; an accommodating groove is formed in the spring support sleeve, one end of the central shaft penetrates through the shaft sleeve and is fixedly connected with the bottom of the accommodating groove, the volute spring is arranged in the accommodating groove, one end of the volute spring is fixedly connected to the inner wall of the accommodating groove, and the other end of the volute spring is fixedly connected to the outer wall of the shaft sleeve; the spring washer is sleeved with the shaft sleeve and abuts against between the end face of the spring support sleeve and the support arm;
the tensioning wheel also comprises a damping mechanism which is fixedly connected to one end of the central shaft far away from the spring support sleeve and is attached to the end surface of one side of the support arm back to the shaft sleeve;
the damping mechanism comprises an end cover and a damping fin, the damping fin is attached to the end face of one side of the support arm, which is back to the shaft sleeve, the end cover is fixedly connected with one end of the central shaft, which is far away from the spring support sleeve, the end cover is made of elastic materials and is connected with the damping fin, and axial positive pressure is provided for the damping fin through the end cover;
the damping fin is annular, and the end surface facing the support arm is a spiral surface; the end face of the support arm facing the damping fin is provided with an annular step attached to the damping fin, and the end face of the annular step facing the damping fin is a spiral face matched with the damping fin.
The outer wall of the end cover is connected with the inner wall of the damping fin, and the end cover and the damping fin are integrated through injection molding.
The end cover is fixedly connected to the end face, back to the support arm, of the damping fin.
The elastic material is 65Mn spring steel.
When the tension pulley is loaded, the loading torque is continuously increased and the increase amplitude is larger than that of the traditional tension pulley with a symmetrical damping structure, so that the increase amplitude of the belt vibration inhibition force (corresponding to the loading torque) is larger, and the inhibition effect of the belt vibration inhibition force on the belt in the loading process is better than that of the traditional tension pulley; when the tensioning wheel is unloaded, the unloading torque is continuously reduced and the reduction range is smaller than that of the traditional tensioning wheel with a symmetrical damping structure, so that the reduction range of the belt tensioning force (corresponding to the unloading torque) in the scheme is smaller, and the effect of maintaining the belt tensioning force in the unloading process of the scheme is better than that of the traditional tensioning wheel. Meanwhile, when the device is in the actual use process after pre-compression, namely the loading damping is larger than the unloading damping when the support arm is at the same position. Therefore, the scheme integrally solves various defects caused by symmetric damping, and has the advantages of being exquisite in structure, good in stability, good in using effect and the like.
Drawings
FIG. 1 is a schematic structural diagram of the present application,
figure 2 is a top view of figure 1,
figure 3 is a cross-sectional view taken along line a-a of figure 2,
figure 4 is a perspective exploded view of a first embodiment of the present invention,
FIG. 5 is a schematic perspective exploded view of a second embodiment of the present invention;
figure 6 is a schematic view of a damper plate structure,
figure 7 is a top view of figure 6,
figure 8 is a bottom view of figure 6,
figure 9 is a perspective view one of the damping plate,
figure 10 is a second perspective view of the damping plate,
figure 11 is a perspective view three of the damping plate,
FIG. 12 is a fourth perspective view of the damping plate;
FIG. 13 is a perspective view of the arm;
in the figure, 1 is a belt pulley, 2 is an arm, 20 is a shaft sleeve, 21 is an annular step, 22 is a step surface two, 3 is a central shaft, 4 is a spring washer, 5 is a volute spring, 6 is a spring support sleeve, 7 is an end cover, 8 is a damping sheet, 81 is an end surface of the damping sheet facing the arm, and 82 is a step surface one.
Detailed Description
The invention is shown in figures 1-13, comprising a belt pulley 1, a support arm 2, a central shaft 3, a spring washer 4, a volute spiral spring 5 and a spring support sleeve 6, wherein the belt pulley 1 is hinged on one side of the support arm 2, the central shaft 3 is arranged on the other side of the support arm 2 in a penetrating way, a shaft sleeve 20 is arranged on the end surface of one side of the support arm 2, and the shaft sleeve 20 is sleeved on the central shaft 3 and is connected with the support arm 2 into a whole; an accommodating groove is formed in the spring support sleeve 6, one end of the central shaft 3 penetrates through the shaft sleeve 20 and is fixedly connected with the bottom of the accommodating groove, the volute spring 5 is arranged in the accommodating groove, one end of the volute spring 5 is fixedly connected to the inner wall of the accommodating groove, and the other end of the volute spring 5 is fixedly connected to the outer wall of the shaft sleeve 20; the spring washer 4 is sleeved with the shaft sleeve 20 and is abutted between the end face of the spring support sleeve 6 and the support arm 2;
the tensioning wheel also comprises a damping mechanism which is fixedly connected with one end of the central shaft 3 far away from the spring support sleeve 6 and is attached to the end surface of one side of the support arm 2 back to the shaft sleeve 20;
the damping mechanism comprises an end cover 7 and a damping fin 8, the damping fin 8 is attached to the end face of one side of the support arm 2, which is back to the shaft sleeve 20, the end cover 7 is fixedly connected with one end of the central shaft 3, which is far away from the spring support sleeve 6, the end cover 7 is made of elastic materials and is connected with the damping fin 8, and axial positive pressure is provided for the damping fin 8 through the end cover 7;
the damping fin 8 is annular, and the end surface 81 facing the support arm is a spiral surface; the end face, facing the damping fin 8, of the support arm 2 is provided with an annular step 21 attached to the damping fin 8, and the end face, facing the damping fin 8, of the annular step is a spiral face matched with the damping fin 8. Wherein, a first step surface 82 is arranged between the upper end and the lower end of the spiral surface of the damping fin, and a second step surface 22 is arranged between the upper end and the lower end of the spiral surface of the annular step; when leaving the factory, the first section difference surface and the second section difference surface are attached, during assembly, the tensioning wheel is required to be installed on the surface of the engine firstly, the support arm is rotated again to compress the volute spiral spring, and after the belt is arranged, the support arm is loosened to pull the belt under the influence of the restoring force of the volute spiral spring so as to keep the belt tensioned. When the volute spiral spring is compressed, the first section difference surface and the second section difference surface are far away from each other, so that enough activity space is reserved for forward and reverse swinging of the support arm, namely the loading and unloading processes of the tension wheel.
Then, in the normal use process of the tensioning wheel, if the support arm rotates towards the loading direction, the distance between the first section difference surface and the second section difference surface is continuously increased, so that the damping sheet is gradually far away from the support arm, the deformation of the end cover is gradually increased, the axial positive pressure is increased, and the damping force is increased; if the support arm rotates towards the unloading direction, the distance between the first section difference surface and the second section difference surface is continuously reduced, so that the damping sheet is gradually close to the support arm, the deformation of the end cover is gradually reduced, and the axial positive pressure and the damping force are reduced; finally, asymmetric damping is achieved.
The following discussion is developed for asymmetric damping:
when a traditional tension wheel with a symmetrical damping structure is loaded, the damping force is unchanged, and the spring force is increased, but the damping force is increased, and the spring force is increased, so that when a support arm is at the same position, the loading torque (sum of the damping force and the spring force) of the tension wheel is far larger than that of the traditional tension wheel.
When the traditional tensioning wheel with a symmetrical damping structure is unloaded, the damping force is unchanged, and the spring force is reduced, but the damping force is reduced, and the spring force is reduced, so that when the support arm is at the same position, the unloading torque (the difference between the spring force and the damping force) of the scheme is also larger than the loading torque of the traditional tensioning wheel.
In summary, when the tensioning wheel is loaded, the loading torque is continuously increased and the increase amplitude is larger than that of the traditional tensioning wheel with a symmetrical damping structure, so that the increase amplitude of the belt vibration suppression force (corresponding to the loading torque) in the scheme is larger, and the suppression effect of the scheme on belt vibration in the loading process is better than that of the traditional tensioning wheel; when the tensioning wheel is unloaded, the unloading torque is continuously reduced and the reduction range is smaller than that of the traditional tensioning wheel with a symmetrical damping structure, so that the reduction range of the belt tensioning force (corresponding to the unloading torque) in the scheme is smaller, and the effect of maintaining the belt tensioning force in the unloading process of the scheme is better than that of the traditional tensioning wheel. Meanwhile, when the device is in the actual use process after pre-compression, namely the loading damping is larger than the unloading damping when the support arm is at the same position. Therefore, the scheme integrally solves various defects caused by symmetric damping, and has the advantages of being exquisite in structure, good in stability, good in using effect and the like.
The connection mode of the damping sheet and the end cover is representatively illustrated by two embodiments:
in the first embodiment, the outer wall of the end cover 7 is connected with the inner wall of the damping fin 8, and the two are integrally injection-molded. In this way, because the two ends of the central shaft are respectively fixedly connected with the end cover and the spring support sleeve, and the distance between the support arm and the spring support sleeve is not changed, when the damping sheet is far away from the support arm, the deformation amount of the end cover is increased, and when the damping sheet is close to the support arm, the deformation amount of the end cover is decreased.
In the second embodiment, the end cap 7 is fixedly connected to the end surface of the damping fin 8 facing away from the support arm 2. Similarly, when the damping fin is far away from the support arm, the end cover is pressed, so that the deformation of the end cover is increased; on the contrary, when the damping fin is close to the support arm, the deformation of the end cover is reduced.
The elastic material is 65Mn spring steel.
Claims (5)
1. A plane volute spiral spring tension pulley with asymmetric damping is characterized by comprising a belt pulley, a support arm, a central shaft, a spring washer, a volute spiral spring and a spring support sleeve, wherein the belt pulley is hinged to one side of the support arm; an accommodating groove is formed in the spring support sleeve, one end of the central shaft penetrates through the shaft sleeve and is fixedly connected with the bottom of the accommodating groove, the volute spring is arranged in the accommodating groove, one end of the volute spring is fixedly connected to the inner wall of the accommodating groove, and the other end of the volute spring is fixedly connected to the outer wall of the shaft sleeve; the spring washer is sleeved with the shaft sleeve and abuts against between the end face of the spring support sleeve and the support arm;
the tensioning wheel also comprises a damping mechanism which is fixedly connected to one end of the central shaft far away from the spring support sleeve and is attached to the end surface of one side of the support arm back to the shaft sleeve;
the damping mechanism comprises an end cover and a damping fin, the damping fin is attached to the end face of one side of the support arm, which is back to the shaft sleeve, the end cover is fixedly connected with one end of the central shaft, which is far away from the spring support sleeve, the end cover is made of elastic materials and is connected with the damping fin, and axial positive pressure is provided for the damping fin through the end cover;
the damping fin is annular, and the end surface facing the support arm is a spiral surface; the end face of the support arm facing the damping fin is provided with an annular step attached to the damping fin, and the end face of the annular step facing the damping fin is a spiral face matched with the damping fin.
2. An asymmetrically damped spiral spring tensioner as claimed in claim 1, wherein said end cap outer wall is connected to the damper inner wall and is injection molded as one piece.
3. An asymmetrically damped spiral spring tensioner according to claim 1, wherein said end cap is fixedly attached to the end of the damping plate facing away from the arm.
4. An asymmetrically damped spiral spring tensioner as claimed in claim 1, wherein said resilient material is 65Mn spring steel.
5. An asymmetrically damped spiral spring tensioner according to claim 1, further comprising at least one self-lubricating bearing between said central shaft and said sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911199667.8A CN110805668A (en) | 2019-11-29 | 2019-11-29 | Plane scroll spring tensioning wheel with asymmetric damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911199667.8A CN110805668A (en) | 2019-11-29 | 2019-11-29 | Plane scroll spring tensioning wheel with asymmetric damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110805668A true CN110805668A (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911199667.8A Pending CN110805668A (en) | 2019-11-29 | 2019-11-29 | Plane scroll spring tensioning wheel with asymmetric damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110805668A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946783A (en) * | 2020-08-19 | 2020-11-17 | 江苏亚廷汽车科技有限公司 | Variable damping high-balance tensioning wheel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620385A (en) * | 1994-10-28 | 1997-04-15 | Dayco Pti S.P.A. | Tensioners for driving belts |
| US20020010045A1 (en) * | 2000-01-12 | 2002-01-24 | Alexander Serkh | Damping mechanism for a tensioner |
| US20030008739A1 (en) * | 2001-07-05 | 2003-01-09 | Jochen Asbeck | Belt tensioning device |
| JP2006162006A (en) * | 2004-12-09 | 2006-06-22 | Jtekt Corp | Auto tensioner |
| US20100234155A1 (en) * | 2006-03-22 | 2010-09-16 | Antchak John R | Tensioner For Flexible Drives |
| US20130095966A1 (en) * | 2011-10-17 | 2013-04-18 | GM Global Technology Operations LLC | Flexible rotary belt drive tensioner |
| CN204493616U (en) * | 2015-01-30 | 2015-07-22 | 温州博立汽车科技有限公司 | Asymmetric damping tension pulley |
| CN204900711U (en) * | 2015-06-29 | 2015-12-23 | 上海贝尼汽车科技有限公司 | Automobile engine is with automatic belt tensioner who has damping member |
| CN205278261U (en) * | 2015-12-31 | 2016-06-01 | 温州博立汽车科技有限公司 | Asymmetric high damping belt tensioner |
| CN207161644U (en) * | 2017-09-14 | 2018-03-30 | 浙江庆源车业部件有限公司 | A kind of belt stress |
| CN208778610U (en) * | 2018-07-27 | 2019-04-23 | 上海贝序汽车科技有限公司 | A kind of tension pulley mechanism of new automobile engine |
| CN211145256U (en) * | 2019-11-29 | 2020-07-31 | 江苏亚廷汽车科技有限公司 | Plane scroll spring tension wheel with asymmetric damping |
-
2019
- 2019-11-29 CN CN201911199667.8A patent/CN110805668A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620385A (en) * | 1994-10-28 | 1997-04-15 | Dayco Pti S.P.A. | Tensioners for driving belts |
| US20020010045A1 (en) * | 2000-01-12 | 2002-01-24 | Alexander Serkh | Damping mechanism for a tensioner |
| US20030008739A1 (en) * | 2001-07-05 | 2003-01-09 | Jochen Asbeck | Belt tensioning device |
| JP2006162006A (en) * | 2004-12-09 | 2006-06-22 | Jtekt Corp | Auto tensioner |
| US20100234155A1 (en) * | 2006-03-22 | 2010-09-16 | Antchak John R | Tensioner For Flexible Drives |
| US20130095966A1 (en) * | 2011-10-17 | 2013-04-18 | GM Global Technology Operations LLC | Flexible rotary belt drive tensioner |
| CN204493616U (en) * | 2015-01-30 | 2015-07-22 | 温州博立汽车科技有限公司 | Asymmetric damping tension pulley |
| CN204900711U (en) * | 2015-06-29 | 2015-12-23 | 上海贝尼汽车科技有限公司 | Automobile engine is with automatic belt tensioner who has damping member |
| CN205278261U (en) * | 2015-12-31 | 2016-06-01 | 温州博立汽车科技有限公司 | Asymmetric high damping belt tensioner |
| CN207161644U (en) * | 2017-09-14 | 2018-03-30 | 浙江庆源车业部件有限公司 | A kind of belt stress |
| CN208778610U (en) * | 2018-07-27 | 2019-04-23 | 上海贝序汽车科技有限公司 | A kind of tension pulley mechanism of new automobile engine |
| CN211145256U (en) * | 2019-11-29 | 2020-07-31 | 江苏亚廷汽车科技有限公司 | Plane scroll spring tension wheel with asymmetric damping |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946783A (en) * | 2020-08-19 | 2020-11-17 | 江苏亚廷汽车科技有限公司 | Variable damping high-balance tensioning wheel |
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