CN104763782A - Automatic tensioning wheel for engine belt - Google Patents
Automatic tensioning wheel for engine belt Download PDFInfo
- Publication number
- CN104763782A CN104763782A CN201510187838.0A CN201510187838A CN104763782A CN 104763782 A CN104763782 A CN 104763782A CN 201510187838 A CN201510187838 A CN 201510187838A CN 104763782 A CN104763782 A CN 104763782A
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- CN
- China
- Prior art keywords
- torsion spring
- pivot
- bearing
- automatic tensioner
- automobile
- 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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Classifications
-
- 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
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
Abstract
The invention discloses an automatic tensioning wheel for an engine belt. The structural design of an existing tensioning wheel results in the problems that a tensioning wheel is difficult to position in machining and large in accuracy error and affects actual working condition backlash of a bearing and generates abnormal sound when working. According to the automatic tensioning wheel for the engine belt, an inner ring of a bearing is provided with an eccentric wheel capable of rotating around a pivot, the inner ring of the bearing is fixedly provided with a shifting fork, the periphery of the pivot is sleeved with a torsion spring, the torsion spring transmits elasticity between a base and the shifting fork through the two ends of the torsion spring, and the elasticity of the torsion spring drives the inner ring of the bearing to rotate around the pivot towards the direction of a tensioning belt through the shifting fork, so tensioning is achieved. According to the automatic tensioning wheel for the engine belt, the inner ring of the bearing is provided with the eccentric hole through the inner diameter, the inner ring of the bearing is fixedly provided with the shifting fork, and the elasticity of the torsion spring drives the inner ring of the bearing to rotate around the pivot towards the direction of the tensioning belt through the shifting fork to achieve tensioning. Due to the fact that an original shifting fork piece is omitted, the number of machining surfaces and machining difficulty are reduced, and the risk that the size of backlash is difficult to control and the risk of sidewiping of the belt due to close fitting of the inner ring of the bearing are avoided.
Description
Technical field
The invention belongs to Idle wheel, specifically automatic tensioner for automobile belt.
Background technique
Belt automatic tensioner, assembling, on the engine as driving force member, is played tightening belt, is prevented the effect of belt slippage.
Prior art is (if Authorization Notice No. is the patent documentation 1 of CN1094573C, the patent documentation 2 that publication No. is CN103649591A) due to the adjustment piece of the shift fork part 13(patent documentation 1 shown in Figure 14-16 will be installed additional, the regulator of patent documentation 2), this shift fork part due to have one with the outer round surface 131 of bearing inner ring interior diameter close-fitting and the bore area 132 that coordinates with pivot, the positioning datum of these two surface Machining is difficult to control, trueness error is larger, when must cause work, belt is close to, belt is in belt wheel off-centring, affect power transmission and produce unnecessary abnormal sound, moreover the outer round surface 131 of shift fork part and brearing bore secure fit, the size of its processing diameter tolerance directly affects the actual conditions play of bearing and produces abnormal sound, there is the security risk that bearing does not turn without play and even locking suddenly in actual use.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition be overcome the design of existing tension wheel structure cause add be difficult to man-hour to locate, trueness error is large, work time affect the defect of bearing actual conditions play and generation abnormal sound, a kind of automatic tensioner for automobile belt is provided, in order to reduce finished surface quantity and difficulty of processing, and there is not bearing inner race produces the control of play size difficulty risk because of close-fitting.
For achieving the above object, automatic tensioner for automobile belt of the present invention, comprise pedestal, pivot, bearing, torsion spring, the inner ring of described bearing has the eccentric opening that can pivot, it is characterized in that: the inner ring of described bearing is fixedly installed shift fork, described torsion spring set is in the periphery of described pivot and transmitted between described pedestal and shift fork by elastic force by its two ends, and the elastic force of described torsion spring orders about described bearing inner ring by shift fork to rotate toward the direction of tightening belt around described pivot and realizes tensioning.
As optimization technique means: one end of described torsion spring is placed in described pedestal or the structure fixing with pedestal, and the other end of described torsion spring is placed in described shift fork or the structure fixing with shift fork.Concrete, described pedestal or fixing structure is provided with the first gear with pedestal, described shift fork or fixing structure is provided with the second gear with shift fork, the two ends of described torsion spring are placed in the first described gear, the second gear respectively.
As optimization technique means: described pedestal, shift fork have ring-type flanging in opposite directions, described torsion spring is surrounded by described ring-type flanging.
As optimization technique means: be provided with wearing piece between the hole wall of described eccentric opening and the outer round surface of described pivot.
As optimization technique means: described seat surface is provided with wearing piece between the end face and this end end face of described torsion spring of described shift fork.Further, described wearing piece has axially extended directional post, and described directional post is between described torsion spring and pivot and from the end of described torsion spring to third side to extension.
As optimization technique means: described shift fork is provided with wearing piece towards between the end face and this end end face of described torsion spring of described pedestal.Further, described wearing piece has axially extended directional post, and described directional post is between described torsion spring and pivot and from the end of described torsion spring to third side to extension.
As optimization technique means: arrange directional post between described torsion spring and pivot.
As optimization technique means: the outer surface of the outer ring of described bearing is cylndrical surface.
As optimization technique means: the outer surface of the outer ring of described bearing is provided with at least one belt guide edge.
As optimization technique means: on the outer ring of described bearing, close-fitting installs a hub.
As optimization technique means: described pivot has an endoporus, in described endoporus, configure a rotatable eccentric adjustment bar.
As optimization technique means: described pivot and pedestal fixed configurations.
As optimization technique means: described pivot and pedestal rotatably configure.Further, described pivot has axially penetrating eccentric opening.Described pivot and a regulator plate fixed configurations with eccentric opening.
The invention has the beneficial effects as follows: by bearing inner ring interior diameter is set to eccentric opening, the inner ring of bearing is fixedly installed shift fork, the elastic force of torsion spring is pivotally rotated toward the direction of tightening belt by the inner ring that shift fork orders about bearing and realizes tensioning.Owing to eliminating the shift fork part shown in Figure 14-16, decrease finished surface quantity and difficulty of processing, and there is not bearing inner race produces the control of play size difficulty risk and the risk that is close to of belt because of close-fitting.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the embodiment 1 of automatic tensioner for automobile belt of the present invention;
Fig. 2 is the sectional structure schematic diagram of the embodiment 2 of automatic tensioner for automobile belt of the present invention;
Fig. 3 is the sectional structure schematic diagram of the embodiment 3 of automatic tensioner for automobile belt of the present invention;
Fig. 4 is the sectional structure schematic diagram of the embodiment 4 of automatic tensioner for automobile belt of the present invention;
Fig. 5 is the sectional structure schematic diagram of the embodiment 5 of automatic tensioner for automobile belt of the present invention;
Fig. 6 is the sectional structure schematic diagram of the embodiment 6 of automatic tensioner for automobile belt of the present invention;
Fig. 7 is the sectional structure schematic diagram of the embodiment 7 of automatic tensioner for automobile belt of the present invention;
Fig. 8 is the sectional structure schematic diagram of the embodiment 8 of automatic tensioner for automobile belt of the present invention;
Fig. 9 is the sectional structure schematic diagram of the embodiment 9 of automatic tensioner for automobile belt of the present invention;
Figure 10 is the sectional structure schematic diagram of the embodiment 10 of automatic tensioner for automobile belt of the present invention;
Figure 11 is the sectional structure schematic diagram of the embodiment 11 of automatic tensioner for automobile belt of the present invention;
Figure 12 is the stereogram of Figure 11;
Figure 13 is the schematic diagram of torsion spring of the present invention;
Figure 14 is the axial orthographic projection schematic diagram of prior art shift fork part;
Figure 15 is the rear view of Figure 14;
Figure 16 is that the X-X of Figure 15 is to sectional view;
Number in the figure illustrates: 1-pedestal, 2-pivot, the outer round surface of 21-pivot, 22-endoporus, 23-eccentric opening, 3-bearing, 31-eccentric opening, the outer surface of 32-bearing outer ring, 33-belt guide edge, 4-shift fork, 5-torsion spring, 6-wearing piece, 7-wearing piece, 71-directional post, 8-wearing piece, 81-directional post, 9-directional post, 10-hub, 11-eccentric adjustment bar, 13-shift fork part, 131-outer round surface, 132-bore area, 14-regulator plate.
Embodiment
Below in conjunction with Figure of description, the present invention will be further described.
Automatic tensioner for automobile belt of the present invention structure as Figure 1-10 shows, it comprises pedestal 1, pivot 2, bearing 3, torsion spring 5(see Figure 13), the inner ring of bearing 3 has the eccentric opening 31 that can pivot, the inner ring of bearing is fixedly installed shift fork 4, torsion spring 5 is enclosed within the periphery of pivot 2 and is transmitted between pedestal 1 and shift fork 4 by elastic force by its two ends, and the elastic force of torsion spring 5 is pivotally rotated toward the direction of tightening belt by the inner ring that shift fork orders about bearing and realizes tensioning.
During use, by pedestal 1 non-rotatably fixation on the engine, then the elastic force of torsion spring 5 passes to shift fork 4, the inner ring ordering about bearing from shift fork 4 pivotally rotates toward the direction of tightening belt and realizes tensioning.
Concrete, one end of torsion spring 5 is placed in pedestal or the structure fixing with pedestal, and the other end of torsion spring 5 is placed in shift fork or the structure fixing with shift fork.Further, pedestal or fixing structure is provided with the first gear with pedestal, shift fork or fixing structure is provided with the second gear with shift fork, the two ends of torsion spring are placed in the first gear, the second gear respectively.
In order to avoid torsion spring is exposed and affect it and normally work, pedestal 1, shift fork 4 have ring-type flanging in opposite directions, and torsion spring 5 is surrounded by ring-type flanging.
In order to increase the wear-resisting property between eccentric opening and torsion spring 5 end face, between the hole wall of eccentric opening 31 and the outer round surface 21 of pivot, be provided with wearing piece 6.
In order to increase the wear-resisting property between pedestal and torsion spring, pedestal 1 is provided with wearing piece 7(see Fig. 2 towards between the end face and this end end face of torsion spring 5 of shift fork 4).In order to realize torsion spring location, wearing piece 7 has axially extended directional post 71, and directional post 71 is between torsion spring 5 and pivot 2 and from the end of torsion spring 5 to third side to extending (see Fig. 2).
In order to increase the wear-resisting property between shift fork and torsion spring, shift fork 4 is provided with wearing piece 8(see Fig. 1 towards between the end face and this end end face of torsion spring 5 of pedestal 1).Also for ease of and realize torsion spring location, wearing piece 8 has axially extended directional post 81, and directional post 81 is between torsion spring 5 and pivot 2 and from the end of torsion spring 5 to third side to extending (see Fig. 1).
During concrete enforcement, in order to realize, to torsion spring location, directional post 9(can also being arranged separately see Fig. 3-10 between torsion spring 5 and pivot 2).
In order to by belt on the outer surface of bearing outer ring with tightening belt, according to the form of belt, the outer surface 32 of the outer ring of bearing 3 can be made as various shape (Fig. 7-8,10 is depicted as cylndrical surface).Further, the outer surface 32 of the outer ring of bearing 3 is provided with at least one belt guide edge 33, stops belt to depart from the outer surface (see Fig. 7, the hub shown in Fig. 1,6,9 is provided with such structure previous night) of bearing outer ring.The shape of bearing 3 outer ring outer surface 32, belt guide edge 33 are equally applicable to the hub 10 hereafter addressed.
Same, in order to tightening belt, on the outer ring of bearing 3, close-fitting installs a hub 10(see Fig. 1-6,9), belt is tensioned on the outer surface of hub, the outer surface of hub also can be made as cylndrical surface and (be applicable to flat rubber belting, see Fig. 1,3,6,9), the shape such as wedge channel-shaped (be suitable for triangular belt, see Fig. 5), synchronous gear (being suitable for Timing Belt, see Fig. 4).And the outer ring of hub and bearing by riveting, the form close-fitting such as injection moulding installs.
For the ease of tension adjusting, pivot has an axially penetrating endoporus 22, configures a rotatable eccentric adjustment bar 11 in endoporus 22, when Idle wheel is assembled to motor, by screwing the tension force of eccentric adjustment bar adjusting tensioning wheel, last fixed pedestal.
Pivot 2 and pedestal 1 fixed configurations, the two links together by modes such as riveted joint, close-fitting, injection moulding, cast.
In order to simplify assembly structure, being sometimes designed to pivot 2 and also rotatably configuring (see Figure 11) with pedestal 1.Pivot 2 has axially penetrating eccentric opening 23, and with regulator plate 14 fixed configurations (see Figure 11-12), tension adjusting is rotated by rotating regulator plate with the stationary axle of pivot in eccentric opening 23 during use, after tension force is adjusted, secured adjusted plate.
Claims (18)
1. automatic tensioner for automobile belt, comprise pedestal (1), pivot (2), bearing (3), torsion spring (5), it is characterized in that: the inner ring of described bearing (3) has the eccentric opening (31) that can pivot, the inner ring of described bearing is fixedly installed shift fork (4), described torsion spring (5) is enclosed within the peripheral of described pivot (2) and is transmitted between described pedestal (1) and shift fork (4) by elastic force by its two ends, the elastic force of described torsion spring (5) orders about described bearing inner ring by shift fork to rotate toward the direction of tightening belt around described pivot and realizes tensioning.
2. automatic tensioner for automobile belt according to claim 1, is characterized in that: one end of described torsion spring is placed in described pedestal or the structure fixing with pedestal, and the other end of described torsion spring is placed in described shift fork or the structure fixing with shift fork.
3. automatic tensioner for automobile belt according to claim 2, it is characterized in that: described pedestal or fixing structure is provided with the first gear with pedestal, described shift fork or fixing structure is provided with the second gear with shift fork, the two ends of described torsion spring are placed in the first described gear, the second gear respectively.
4. automatic tensioner for automobile belt according to claim 1, is characterized in that: described pedestal (1), shift fork (4) have ring-type flanging in opposite directions, and described torsion spring (5) is surrounded by described ring-type flanging.
5. automatic tensioner for automobile belt according to claim 1, is characterized in that: be provided with wearing piece (6) between the hole wall of described eccentric opening (31) and the outer round surface (21) of described pivot.
6. automatic tensioner for automobile belt according to claim 1, is characterized in that: described pedestal (1) is provided with wearing piece (7) towards between the end face and this end end face of described torsion spring (5) of described shift fork (4).
7. automatic tensioner for automobile belt according to claim 6, it is characterized in that: described wearing piece (7) has axially extended directional post (71), described directional post (71) to be positioned between described torsion spring (5) and pivot (2) and from the end of described torsion spring (5) to third side to extension.
8. automatic tensioner for automobile belt according to claim 1, is characterized in that: described shift fork (4) is provided with wearing piece (8) towards between the end face and this end end face of described torsion spring (5) of described pedestal (1).
9. automatic tensioner for automobile belt according to claim 8, it is characterized in that: described wearing piece (8) has axially extended directional post (81), described directional post (81) to be positioned between described torsion spring (5) and pivot (2) and from the end of described torsion spring (5) to third side to extension.
10. automatic tensioner for automobile belt according to claim 1, is characterized in that: arrange directional post (9) between described torsion spring (5) and pivot (2).
11. automatic tensioner for automobile belts according to claim 1, is characterized in that: the outer surface (32) of the outer ring of described bearing (3) is cylndrical surface.
12. automatic tensioner for automobile belts according to claim 1, is characterized in that: the outer surface (32) of the outer ring of described bearing (3) is provided with at least one belt guide edge (33).
13. automatic tensioner for automobile belts according to claim 1, is characterized in that: on the outer ring of described bearing (3), close-fitting installs a hub (10).
14. automatic tensioner for automobile belts according to claim 1, is characterized in that: described pivot has an endoporus (22), configuration one rotatable eccentric adjustment bar (11) in described endoporus (22).
15. automatic tensioner for automobile belts according to claim 1, is characterized in that: described pivot (2) and pedestal (1) fixed configurations.
16. automatic tensioner for automobile belts according to claim 1, is characterized in that: described pivot (2) and pedestal (1) rotatably configure.
17. automatic tensioner for automobile belts according to claim 16, is characterized in that: described pivot (2) has axially penetrating eccentric opening (23).
18. automatic tensioner for automobile belts according to claim 17, is characterized in that: described in there is eccentric opening pivot (2) and a regulator plate (14) fixed configurations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510187838.0A CN104763782B (en) | 2015-04-20 | 2015-04-20 | Automatic tensioner for automobile belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510187838.0A CN104763782B (en) | 2015-04-20 | 2015-04-20 | Automatic tensioner for automobile belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104763782A true CN104763782A (en) | 2015-07-08 |
| CN104763782B CN104763782B (en) | 2017-06-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510187838.0A Active CN104763782B (en) | 2015-04-20 | 2015-04-20 | Automatic tensioner for automobile belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104763782B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545887A (en) * | 2016-01-08 | 2016-05-04 | 长沙职业技术学院 | Eccentric fast locking mechanism |
Citations (8)
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|---|---|---|---|---|
| DE10235540A1 (en) * | 2002-08-03 | 2004-02-19 | Ina-Schaeffler Kg | Tensioner for a belt drive, using an elastic belt, has a structured laying surface at the carrier body to compensate for any negative alignment deviation between the axes of the body and the eccentric through wear |
| DE10252432A1 (en) * | 2002-11-12 | 2004-05-27 | Ina-Schaeffler Kg | Tension device for traction belt etc. has plastic angled ring supported with flat disc section on end plate |
| CN201152347Y (en) * | 2005-04-22 | 2008-11-19 | 谢夫勒两合公司 | Holding fixture for traction tool transmission mechanism |
| CN201575116U (en) * | 2009-10-29 | 2010-09-08 | 上海振华轴承总厂 | Variable-stiffness automatic belt tensioner |
| CN202001567U (en) * | 2011-03-04 | 2011-10-05 | 洪金坤 | Idle wheel for automobile engine |
| CN202301850U (en) * | 2011-09-30 | 2012-07-04 | 广西玉柴机器股份有限公司 | Engine wheel train tensioning wheel |
| CN202883911U (en) * | 2011-11-03 | 2013-04-17 | 浙江庆源车业部件有限公司 | Vehicle belt tension pulley assembly |
| CN203756761U (en) * | 2014-01-13 | 2014-08-06 | 浙江优联汽车轴承有限公司 | Automatic tensioning wheel bearing for belt |
-
2015
- 2015-04-20 CN CN201510187838.0A patent/CN104763782B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10235540A1 (en) * | 2002-08-03 | 2004-02-19 | Ina-Schaeffler Kg | Tensioner for a belt drive, using an elastic belt, has a structured laying surface at the carrier body to compensate for any negative alignment deviation between the axes of the body and the eccentric through wear |
| DE10252432A1 (en) * | 2002-11-12 | 2004-05-27 | Ina-Schaeffler Kg | Tension device for traction belt etc. has plastic angled ring supported with flat disc section on end plate |
| CN201152347Y (en) * | 2005-04-22 | 2008-11-19 | 谢夫勒两合公司 | Holding fixture for traction tool transmission mechanism |
| CN201575116U (en) * | 2009-10-29 | 2010-09-08 | 上海振华轴承总厂 | Variable-stiffness automatic belt tensioner |
| CN202001567U (en) * | 2011-03-04 | 2011-10-05 | 洪金坤 | Idle wheel for automobile engine |
| CN202301850U (en) * | 2011-09-30 | 2012-07-04 | 广西玉柴机器股份有限公司 | Engine wheel train tensioning wheel |
| CN202883911U (en) * | 2011-11-03 | 2013-04-17 | 浙江庆源车业部件有限公司 | Vehicle belt tension pulley assembly |
| CN203756761U (en) * | 2014-01-13 | 2014-08-06 | 浙江优联汽车轴承有限公司 | Automatic tensioning wheel bearing for belt |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545887A (en) * | 2016-01-08 | 2016-05-04 | 长沙职业技术学院 | Eccentric fast locking mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104763782B (en) | 2017-06-30 |
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