CN109667897A - Mechanical tensioner with dual torsion spring - Google Patents
Mechanical tensioner with dual torsion spring Download PDFInfo
- Publication number
- CN109667897A CN109667897A CN201710952116.9A CN201710952116A CN109667897A CN 109667897 A CN109667897 A CN 109667897A CN 201710952116 A CN201710952116 A CN 201710952116A CN 109667897 A CN109667897 A CN 109667897A
- Authority
- CN
- China
- Prior art keywords
- tensioner
- coil
- torsion spring
- pivot
- torque arm
- 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.)
- Pending
Links
- 230000009977 dual effect Effects 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The present invention provides a mechanical tensioner having a dual torsion spring, comprising: a tensioner body; and pivots protruding from both side surfaces of the tensioner body. The mechanical tensioner further comprises a double torsion spring comprising: a first coil and a second coil; a first torsion arm and a third torsion arm extending from the first coil; and a second torsion arm and a fourth torsion arm extending from the second coil. The first coil and the second coil are sleeved on the pivot shaft from two sides of the tensioner body respectively, the first torsion arm and the second torsion arm are fixedly installed on two sides of the tensioner body respectively, and the third torsion arm and the fourth torsion arm overhang outwards from two sides of the tensioner body. The torsion spring of the mechanical tensioner of the present invention includes two coils provided at both sides of the tensioner body, so that the tension provided by the torsion spring can be more symmetrical in the thickness direction of the tensioner body (i.e., the height direction of the torsion spring) than in the prior art, thus providing a more symmetrical tension in the width direction of the chain.
Description
Technical field
The present invention relates to the chain stretching devices in car engine timing system, especially the machinery with torsion spring
Tight device.
Background technique
In order to guarantee that the chain moment in the timing system for automobile engine is in tensioning state, need to be arranged tensioning
Device.Since the tensile force unlike hydraulic tensioner is influenced by oil pressure, now, mechanical tensioner is widely used in automobile hair
Chain drive system in motivation.Existing mechanical tensioner uses torsional spring more, and the coil of torsional spring can revolve in tensioner body
Turn, the one leg of torsional spring is fixed in tensioner body, and another one leg is biased to provide tension.
Figures 1 and 2 show that the structural schematic diagram of a kind of mechanical tensioner in the prior art and its torsional spring.Wherein, it turns round
Spring 100 is installed on tensioner body 200 in the side of tensioner body 200.
Chinese invention patent discloses CN105240470A and CN105299160A and provides the mechanical tensioner with torsional spring
With torsional spring fixing means.
Chinese invention patent discloses CN103206498A and discloses mechanical tensioner and coil spring fixation side with U-shaped coil spring
Method.
But following defect exists in the prior art in these:
(1) side of tensioner body is arranged in torsional spring, and the tensile force that torsional spring provides cannot be in the width direction of chain
Guarantee symmetrical.In addition, torsional spring can also provide a torque in its height direction, stretcher can be made unstable, influence system
Runnability.
(2) side of tensioner body is arranged in torsional spring, and torsional spring pops up in order to prevent, needs using complicated mode to torsion
The leg of spring is fixed.
(3) in view of the plastic strain limit of material uses on mechanical tensioner within the scope of identical angle change
Leaf spring or other springs such as coil spring big torque range as the torque range that torsional spring can be provided can not be provided.
Summary of the invention
The object of the present invention is to provide a kind of mechanical tensioners with torsion spring, can provide in use stable
Tensile force.
A kind of mechanical tensioner with torsion spring comprising:
Tensioner body；And
Pivot, it is prominent from the both side surface of the tensioner body,
The mechanical tensioner further includes torsion spring, and the torsion spring includes: first coil and the second coil；From described
The first torque arm and third torque arm that one coil extends；And the second torque arm extended from second coil and the 4th is turned round
Arm,
The first coil and second coil cover on the pivot from the two sides of the tensioner body respectively, institute
It states the first torque arm and second torque arm is fixedly installed to the two sides of the tensioner body respectively, the third torque arm and described
4th torque arm overhangs outward in the two sides of the tensioner body.
In at least one embodiment, the torsion spring further includes connecting the third torque arm and the 4th torque arm
Interconnecting piece.
In at least one embodiment, the torsion spring is wound by single line material.
In at least one embodiment, the first coil and second coil are arranged concentrically.
In at least one embodiment, the first coil is identical with the circle number of second coil.
In at least one embodiment, the torsion spring has face symmetrical structure.
In at least one embodiment, the pivot and the tensioner body are separately formed, the pivot insertion peace
It is attached in the pivotal mounting hole of the tensioner body.
In at least one embodiment, the pivot includes the first pivot and the second pivot, first pivot and institute
It states the second pivot and is installed to the tensioner body from the two sides of the tensioner body.
In at least one embodiment, the pivot and the tensioner body are integrally formed.
In at least one embodiment, the mechanical tensioner is the mechanical tensioner of chain drive system,
The pivot is cylindrical shape, and the bolt for being available for for the tensioner body being installed to engine body passes through；
The tensioner body includes the first spring fixing portion and second spring fixed part, is respectively used to described in fixed installation
First torque arm and second torque arm.
The torsional spring of mechanical tensioner of the invention includes two coils, and two coils are set to the two sides of tensioner body,
To which compared with the prior art, the tensile force that torsional spring provides can be in thickness direction (the i.e. height side of torsional spring of tensioner body
To) on it is more symmetrical, in this way, providing more symmetrical tensile force in the width direction of chain.
Detailed description of the invention
Fig. 1 shows a kind of structural schematic diagram of mechanical tensioner in the prior art.
Fig. 2 shows the structural schematic diagrams of torsional spring in the prior art.
Fig. 3 shows the structural schematic diagram of mechanical tensioner according to embodiment of the present invention.
Fig. 4 shows the tensioner body of mechanical tensioner according to the present invention and the structural schematic diagram of pivot.
Fig. 5 shows the structural schematic diagram of the torsional spring in mechanical tensioner according to the present invention.
Fig. 6 shows the cross-sectional view of mechanical tensioner according to the present invention.
Fig. 7 shows the scheme of installation of mechanical tensioner according to the present invention.
Description of symbols
100 torsional springs, 200 tensioner bodies, 10 mechanical tensioners, 20 chains, 30 first sprocket wheels, 40 second sprocket wheels, 50 spiral shells
Bolt, 1 tensioner body, 11 first spring blocks, 12 second spring blocks, 13 chain sliding surfaces, 2 first pivots, 3 second pivots
Axis, 4 torsional springs, 41 first torque arm, 42 second torque arm, 43 first coils, 44 second coils, leg in 45 springs, 46 interconnecting pieces, 47
Three torque arm, 48 the 4th torque arm.
Specific embodiment
Embodiments of the present invention are described hereinafter with reference to Figure of description.It should be appreciated that these specific descriptions are only used
How to implement the present invention, rather than all feasible modes that exhaustion is of the invention in teaching those skilled in the art, without
In limiting the scope of the invention.
The present invention provides a kind of mechanical tensioner with torsion spring, which includes tensioner body 1, pivot
With torsional spring 4.As shown in figure 5, the single line material that torsional spring 4 can be, for example, spring steel by material is wound.Torsional spring 4 has winding
First coil 43 and the second coil 44 circlewise, one end of first coil 43 extend to form as the first torque arm 41, the second coil
44 one end extends to form as the second torque arm 42, and first coil 43 is connected with the other end of the second coil 44 is formed as leg in spring
45.Leg 45 is substantially U-shaped in spring, and includes: the third torque arm 47 extended to form by the other end of first coil 43；By
The 4th torque arm 48 that the other end of second coil 44 extends to form；And it connects third torque arm 47 and the 4th torque arm 48 and constitutes U
The interconnecting piece 46 of the bottom of font.
Preferably, first coil 43 and the second coil 44 are arranged concentrically.The circle number of first coil 43 and the second coil 44 and
Diameter is preferably equal.Torsional spring 4 is whole preferably to have face symmetrical structure.In this way, being provided by the first torque arm 41 and the second torque arm 42
Elastic force be in the short transverse (that is, axial direction of first coil 43 and the second coil 44) of torsional spring 4 it is symmetrical, this is for chain
20 tension performance is highly beneficial, can eliminate stretcher caused by the difference in height between the two legs as traditional torsional spring assembling or
The unstability of operation.
Tensioner body 1 can be made of such as plastics.Referring to Fig. 3, Fig. 4 and Fig. 6, tensioner body 1 includes the first bullet
Spring block 11 and second spring block 12, the first torque arm 41 are against on the first spring block 11, and the second torque arm 42 is against the second bullet
On spring block 12, so that the first spring block 11 and second spring block 12 prevent torsional spring 4 to be detached from from tensioner body 1.One
In a example, the hook for fixing the first torque arm 41 can be set on the first spring block 11, can be set on second spring block 12
The hook of the second torque arm 42 is fixed, hook helps preferably to fix the first torque arm 41 and the second torque arm 42.Tensioner body 1 further includes
Chain sliding surface 13, referring to Fig. 7, chain sliding surface 13 is contacted with chain 20, can apply tensile force to chain 20.
Pivot includes the first pivot 2 and the second pivot 3, and the first pivot 2 and the second pivot 3 are from the two sides of tensioner body 1
It is inserted into tensioner body 1.First coil 43 and the second coil 44 are respectively fitted over the first pivot 2 and the second pivot the other way around
On 3.
Preferably, the first pivot 2 and the second pivot 3 it is aligned with each other be mounted in tensioner body 1,2 He of the first pivot
The outer diameter having the same of second pivot 3.
The first coil 43 of torsional spring 4 and the second coil 44 are covered from two opposite directions in the first pivot 2 and the second pivot 3
On, torsional spring 4 is symmetrically installed on tensioner body 1 by substantially face via the first pivot 2 and the second pivot 3.Even if shaking
Emotionally condition, torsional spring 4 can also be retained securely in tensioner body 1.The installation of torsional spring 4 can make full use of tensioner body
The space of 1 two sides.In the present embodiment using the wire coil of smaller line footpath around torsional spring 4 can provide and existing skill
In art using bigger line footpath wire coil around same number of turns (i.e. first coil 43 and the second coil 44 respectively with the line of the prior art
The circle number of circle is identical) the identical torque of torsional spring, this brings advantage spatially for the assembly layout of system.
As shown in fig. 6, in the case where the first pivot 2 and the second pivot 3 are cylindrical body, using bolt 50 from axially across
Tensioner body 1 is fixed on engine body by pivot, is against leg 45 in spring on engine body.
In the example shown in the series of figures, the first pivot 2 and the second pivot 3 are cylindrical body.However, the invention is not limited thereto, as long as
First coil 43 and the second coil 44 can be installed on pivot.For example, pivot can be column.
The schematic diagram that mechanical tensioner 10 of the invention is installed to the state of chain drive system is shown in Fig. 7.Chain 20
On the first sprocket wheel 30 and the second sprocket wheel 40.When mechanical tensioner 10 is installed, pivot is passed axially through by machine using bolt 50
Tool stretcher 10 is mounted on engine body.Chain sliding surface 13 in tensioner body 1 is in contact with chain 20, spring
Middle leg 45 is against on engine body.The tension chain 20 under the action of torsional spring 4 of tensioner body 1.Provided due to torsional spring 4
Power is symmetrical in the short transverse of tensioner body 1, even if under vibrating conditions, torsional spring 4 can also be retained securely in tensioning
On device ontology 1.
Although the specific technical solution of the present invention is set forth in the above specific embodiment, also
It should be understood that
(1) pivot of the invention is not limited to the first pivot and the second pivot being packed into from tensioner body two sides, may be used also
To be that a complete pivot penetrates the other side from the side of tensioner body and is pierced by.
In pivot and in the case where 1 separable assembled of tensioner body, can in the case where not changing the shape of torsional spring 4 incite somebody to action
Torsional spring 4 is by being pivotally mounted to tensioner body 1, it further ensures that torsional spring 4 can be reliably held at tensioner body 1
On.
(2) pivot can be integrally formed with tensioner body 1.In this case, it is only necessary to make first coil 43 and
Two coil 44, which is separated from each other, to be installed to torsional spring 4 in tensioner body 1, and after installation, 4 elastic recovery of torsional spring is deformed to
State originally, torsional spring 4 can be still reliably held in tensioner body 1.
(3) merely for the two sides for making tensioner body 1 uniform tension in order purpose, torsional spring 4 in the application even can be with
It is two sseparated torsional springs, two sseparated torsional springs are respectively installed to tensioner body 1 from the two sides of tensioner body 1.This is still
The tensile force that can be realized on 20 width of chain is consistent.
Therefore, " torsion spring " mentioned in the application includes two torsional springs separated from each other, also includes tool as shown in Figure 5
There are two the twin coil torsional springs of coil.
The fixed structure of (4) first torque arm 41 and the second torque arm 42 is not limited to the first spring block 11 and second spring link stopper
12.The first torque arm 41 and the second torque arm 42 can be fixedly mounted on tensioner body with other fixed structures (spring fixing portion)
On 1.
(5) " pivot is prominent from the both side surface of tensioner body " mentioned in the application refers to exist around pivot
The first coil 43 of torsional spring 4 and the space of the second coil 44 are installed, therefore, pivot is outstanding from surrounding surface.But
Pivot need not be more prominent than the surface at other positions of 1 two sides of tensioner body.
Claims (10)
1. a kind of mechanical tensioner with torsion spring comprising:
Tensioner body；And
Pivot, it is prominent from the both side surface of the tensioner body,
It is characterized in that,
The mechanical tensioner further includes torsion spring, and the torsion spring includes: first coil and the second coil；From the First Line
Enclose the first torque arm and third torque arm extended；And the second torque arm and the 4th torque arm extended from second coil,
The first coil and second coil cover on the pivot from the two sides of the tensioner body respectively, and described
One torque arm and second torque arm are fixedly installed to the two sides of the tensioner body, the third torque arm and the described 4th respectively
Torque arm overhangs outward in the two sides of the tensioner body.
2. the mechanical tensioner according to claim 1 with torsion spring, which is characterized in that the torsion spring further includes connecting
Connect the interconnecting piece of the third torque arm and the 4th torque arm.
3. the mechanical tensioner according to claim 2 with torsion spring, which is characterized in that the torsion spring is by single line
Material is wound.
4. the mechanical tensioner according to claim 1 with torsion spring, which is characterized in that the first coil and described
Second coil is arranged concentrically.
5. the mechanical tensioner according to claim 1 with torsion spring, which is characterized in that the first coil and described
The circle number of second coil is identical.
6. the mechanical tensioner according to claim 1 with torsion spring, which is characterized in that the torsion spring, which has, to be faced
Claim structure.
7. the mechanical tensioner according to any one of claim 1 to 6 with torsion spring, which is characterized in that the pivot
Axis and the tensioner body are separately formed, and the pivot insertion is installed in the pivotal mounting hole of the tensioner body.
8. the mechanical tensioner according to claim 7 with torsion spring, which is characterized in that the pivot includes the first pivot
Axis and the second pivot, first pivot and second pivot are installed to the stretcher from the two sides of the tensioner body
Ontology.
9. the mechanical tensioner according to any one of claim 1 to 6 with torsion spring, which is characterized in that the pivot
Axis is integrally formed with the tensioner body.
10. the mechanical tensioner according to any one of claim 1 to 6 with torsion spring, which is characterized in that the machine
Tool stretcher is the mechanical tensioner of chain drive system,
The pivot is cylindrical shape, and the bolt for being available for for the tensioner body being installed to engine body passes through；
The tensioner body includes the first spring fixing portion and second spring fixed part, is respectively used to be fixedly mounted described first
Torque arm and second torque arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952116.9A CN109667897A (en) | 2017-10-13 | 2017-10-13 | Mechanical tensioner with dual torsion spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952116.9A CN109667897A (en) | 2017-10-13 | 2017-10-13 | Mechanical tensioner with dual torsion spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109667897A true CN109667897A (en) | 2019-04-23 |
Family
ID=66138823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710952116.9A Pending CN109667897A (en) | 2017-10-13 | 2017-10-13 | Mechanical tensioner with dual torsion spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109667897A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210356022A1 (en) * | 2020-05-14 | 2021-11-18 | Tsubakimoto Chain Co. | Tensioner lever |
| US20230049971A1 (en) * | 2021-08-16 | 2023-02-16 | Tsubakimoto Chain Co. | Tensioner lever |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5471895A (en) * | 1993-01-18 | 1995-12-05 | Tsubakimoto Chain Co. | Camshaft driving mechanism of double overhead camshaft engine |
| JP2001021014A (en) * | 1999-07-07 | 2001-01-26 | Mitsubishi Agricult Mach Co Ltd | Chain tension adjusting device |
| CN1468347A (en) * | 2000-10-03 | 2004-01-14 | �Ǵĺ�˾ | Accessory and motor/generator belt drive tensioner |
| US20070021252A1 (en) * | 2005-07-21 | 2007-01-25 | Weber Motor Ag | Tensioning system |
| DE102006007353A1 (en) * | 2006-02-17 | 2007-08-23 | Schaeffler Kg | Twin spiral spring acting on lever tensions automotive timing chain or pulley belt |
| WO2011026788A1 (en) * | 2009-09-01 | 2011-03-10 | SSI Schäfer Noell GmbH Lager- und Systemtechnik | Device for tensioning continuously recirculating conveyors |
| CN102050239A (en) * | 2009-11-03 | 2011-05-11 | 广东海洋大学 | Square and round bale dual-purpose type twining film wrapping machine |
| CN203309039U (en) * | 2013-06-03 | 2013-11-27 | 宁波丰茂远东橡胶有限公司 | Dual spring type tensioning wheel assembly used for engine |
| CN203374743U (en) * | 2013-06-04 | 2014-01-01 | 柳州五菱柳机动力有限公司 | Balance shaft chain tensioner |
| CN204195594U (en) * | 2014-10-10 | 2015-03-11 | 福建新龙马汽车股份有限公司 | A kind of gasoline engine timing chain rapid mounting clamp device |
| CN105240470A (en) * | 2014-05-28 | 2016-01-13 | 舍弗勒技术股份两合公司 | Mechanical tensioner for oil pump chain and assembling method thereof |
-
2017
- 2017-10-13 CN CN201710952116.9A patent/CN109667897A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5471895A (en) * | 1993-01-18 | 1995-12-05 | Tsubakimoto Chain Co. | Camshaft driving mechanism of double overhead camshaft engine |
| JP2001021014A (en) * | 1999-07-07 | 2001-01-26 | Mitsubishi Agricult Mach Co Ltd | Chain tension adjusting device |
| CN1468347A (en) * | 2000-10-03 | 2004-01-14 | �Ǵĺ�˾ | Accessory and motor/generator belt drive tensioner |
| US20070021252A1 (en) * | 2005-07-21 | 2007-01-25 | Weber Motor Ag | Tensioning system |
| DE102006007353A1 (en) * | 2006-02-17 | 2007-08-23 | Schaeffler Kg | Twin spiral spring acting on lever tensions automotive timing chain or pulley belt |
| WO2011026788A1 (en) * | 2009-09-01 | 2011-03-10 | SSI Schäfer Noell GmbH Lager- und Systemtechnik | Device for tensioning continuously recirculating conveyors |
| CN102050239A (en) * | 2009-11-03 | 2011-05-11 | 广东海洋大学 | Square and round bale dual-purpose type twining film wrapping machine |
| CN203309039U (en) * | 2013-06-03 | 2013-11-27 | 宁波丰茂远东橡胶有限公司 | Dual spring type tensioning wheel assembly used for engine |
| CN203374743U (en) * | 2013-06-04 | 2014-01-01 | 柳州五菱柳机动力有限公司 | Balance shaft chain tensioner |
| CN105240470A (en) * | 2014-05-28 | 2016-01-13 | 舍弗勒技术股份两合公司 | Mechanical tensioner for oil pump chain and assembling method thereof |
| CN204195594U (en) * | 2014-10-10 | 2015-03-11 | 福建新龙马汽车股份有限公司 | A kind of gasoline engine timing chain rapid mounting clamp device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210356022A1 (en) * | 2020-05-14 | 2021-11-18 | Tsubakimoto Chain Co. | Tensioner lever |
| US11668373B2 (en) * | 2020-05-14 | 2023-06-06 | Tsubakimoto Chain Co. | Tensioner lever |
| US20230049971A1 (en) * | 2021-08-16 | 2023-02-16 | Tsubakimoto Chain Co. | Tensioner lever |
| US11732784B2 (en) * | 2021-08-16 | 2023-08-22 | Tsubakimoto Chain Co. | Tensioner lever |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7153227B2 (en) | Isolator for alternator pulley | |
| US8052559B2 (en) | Tensioner with two way damper | |
| US8783219B2 (en) | Switchable cam follower | |
| US6238311B1 (en) | Blade tensioner with retaining pin and bracket | |
| KR102137279B1 (en) | Belt transmission system | |
| CN109667897A (en) | Mechanical tensioner with dual torsion spring | |
| US9869378B2 (en) | Load application device | |
| US6322469B1 (en) | Dual arm chain tensioner for contacting multiple chain strands | |
| US3782220A (en) | Tension-torsion tie bar | |
| US8215444B2 (en) | Roll restrictor system for an automotive powertrain | |
| US20080274847A1 (en) | Belt tensioning device | |
| CN101725669A (en) | Chain | |
| CN102667243A (en) | Multi-strand tensioning arrangement with moving arms | |
| JP2003214455A (en) | Flexible coupling | |
| CN102216650A (en) | Linearly acting tensioning element | |
| US20070010361A1 (en) | Belt tensioning device with external damping sleeve | |
| US9611896B2 (en) | Elastic force transmission element and coupling device | |
| US10760635B2 (en) | Torsion spring assembly, camshaft phaser and belt or chain tightener therewith | |
| US20070021253A1 (en) | Belt tensioning device | |
| US6641496B2 (en) | Blade tensioner | |
| CA2930672C (en) | Variable stiffness compression apparatus, systems and methods of using the same | |
| CN202032051U (en) | Tension device for traction mechanism driving device | |
| US20070012277A1 (en) | Torsional damper for balance shafts | |
| KR102310502B1 (en) | Double Compression Ratio type Bush and Suspension System thereby | |
| CN109667898A (en) | Hydraulic tensioning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190423 |