CN103511570B - A kind of tensioning apparatus - Google Patents
A kind of tensioning apparatus Download PDFInfo
- Publication number
- CN103511570B CN103511570B CN201210211362.6A CN201210211362A CN103511570B CN 103511570 B CN103511570 B CN 103511570B CN 201210211362 A CN201210211362 A CN 201210211362A CN 103511570 B CN103511570 B CN 103511570B
- Authority
- CN
- China
- Prior art keywords
- pressing plate
- tensioning apparatus
- hole
- bolt pin
- stretcher
- 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.)
- Active
Links
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
- F16H2007/0804—Leaf springs
Abstract
The present invention relates to automobile technical field, disclose a kind of tensioning apparatus, this tensioning apparatus is used for keeping chain tension, including stretcher, described stretcher includes pressing plate and leaf spring, the one side of described pressing plate and chain contact, and the another side of pressing plate contacts with leaf spring, first end of described pressing plate is movably connected on main engine body, and the second end of described pressing plate arranges porose；This tensioning apparatus also includes: be fixed on main body and can with the bolt pin of described hole relative motion, described bolt pin pass described hole.The embodiment of the present invention passes through the relative motion in this hole of the bolt pin, thus drives stretcher to achieve the moderate tension of chain.Only needing to arrange the bolt pin being fixed on main body and the hole of stretcher pressing plate the second end, just can realize the tensioning to chain, this simple structure is conducive to the assembling of parts, and can reduce cost.
Description
Technical field
The invention belongs to automobile technical field, be specifically related to a kind of tensioning apparatus.
Background technology
Past, in order to the transmission annular flexible components such as the chain of transmission engine drive shaft power and belt are applied the suitable tension force for smoothly carrying out power transmission, and in order to prevent the revolution variation of drive shaft from causing the tension change of annular flexible component so that the vibration of annular flexible component, the tensioning apparatus of the tension force that can automatically adjust annular flexible member is set.
Fig. 1 is the structural representation of prior art tensioner, existing chain stretching device includes supporting member 1, flexible pressing plate 2 and leaf spring 3, flexible pressing plate 2 is held in cylinder block, and one end is supported on supporting member 1, and with chain sliding contact, leaf spring is kept by pressing plate, by its elastic force, flexibility pressing plate 2 is pressed against on chain 4, when chain 4 relaxes, by chain 4 tensioning apparatus, chain 4 is pressed, make chain 4 keep the tension force of appropriateness.But existing supporting member is cast in block with cylinder body and structure is complicated, existing hollow out also has the labyrinths such as reinforcement, easily occurs waste product during cylinder casting, too increases the expense of cylinder body big mould die sinking again.
Summary of the invention
The technical problem to be solved is to overcome the deficiencies in the prior art, thus provides the tensioning apparatus of a kind of simple in construction low cost.
For solving above-mentioned technical problem, the present invention provides following technical scheme:
A kind of tensioning apparatus, this tensioning apparatus is used for keeping chain tension, including stretcher, described stretcher includes pressing plate and leaf spring, the one side of described pressing plate and chain contact, the another side of pressing plate contacts with leaf spring, and the first end of described pressing plate is movably connected on main engine body, and the second end of described pressing plate arranges porose；This tensioning apparatus also includes: be fixed on main body and can with the bolt pin of described hole relative motion, described bolt pin pass described hole.
Compared with prior art, there is advantages that the hole of pressing plate second end of bolt pin that the tensioning apparatus that the present invention provides includes being fixed on main body and stretcher, this bolt pin relative motion in the hole, by the relative motion in this hole of the bolt pin, thus stretcher is driven to achieve the moderate tension of chain.Only needing to arrange the hole of pressing plate second end of the bolt pin being fixed on main body and stretcher, just can realize the tensioning to chain, this simple structure is conducive to the assembling of parts, and can reduce cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art tensioner.
Fig. 2 is the structural representation of embodiment of the present invention tensioning apparatus.
Fig. 3 is the first structural representation of embodiment of the present invention bolt pin.
Fig. 4 is the second structural representation of embodiment of the present invention bolt pin.
Fig. 5 is embodiment of the present invention stretcher schematic arrangement schematic diagram when being in initial tension position.
Fig. 6 be embodiment of the present invention stretcher in an intermediate position time schematic arrangement schematic diagram.
Fig. 7 is embodiment of the present invention stretcher schematic arrangement schematic diagram when being in limit slack position.
Fig. 8 be in the embodiment of the present invention Fig. 5 A-A ' to generalized section.
Detailed description of the invention
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The invention discloses a kind of tensioning apparatus, Fig. 2 is the structural representation of embodiment of the present invention tensioning apparatus；This tensioning apparatus is used for keeping chain 10 tension force, including stretcher 11, described stretcher 11 includes pressing plate 14 and leaf spring 15, the one side of described pressing plate 14 contacts with chain 10, the another side of pressing plate 14 contacts with leaf spring 15, and the first end 111 of described pressing plate 14 is movably connected on main engine body 20(cylinder body or cylinder cap) on, further, second end 112 of described pressing plate 14 arranges porose 13, and this hole 13 is positioned at the end of described pressing plate 14；This tensioning apparatus also includes: the bolt pin 12 being fixed on main body 20, and described bolt pin 12 is through described hole 13, can move by relative positioning bolt pin 12 in described hole 13.The present embodiment passes through the bolt pin 12 relative motion in this hole, thus drives stretcher 11 to achieve the moderate tension of chain.Only needing to arrange the hole of pressing plate second end of the bolt pin being fixed on main body and stretcher, just can realize the tensioning to chain, this simple structure is conducive to the assembling of parts, and can reduce cost.In the present embodiment, described hole 13 is a plane with the track of bolt pin 12 relative motion；First end 111 of described pressing plate 14 is positioned at the main body bottom at vertical direction, and the second end 112 of pressing plate 14 is positioned at the main body top at vertical direction, i.e. near a side of cylinder cap.
In the present embodiment, described hole 13 is set to elongate holes, with the region relative motion facilitating this bolt pin 12 to limit in elongate holes with this elongate holes.The long limit of described elongate holes is set to arc, and preferably two long limits are disposed as arc, and the direction that the direction of this arc-shaped bend and stretcher 11 bend is essentially toward the same side.In the present embodiment, the described hole 13 pitch of holes in level of approximation direction, more than the pitch of holes near vertical direction, so can ensure that the stretcher 11 motion relative to bolt pin 12, the beneficially stretching, extension of stretcher 11.
In the present embodiment, this hole 13 and bolt pin 12 matched in clearance, particularly hole 13 in the direction of the width with bolt pin 12 matched in clearance；And gap is less than or equal to 2mm, it is to avoid produce unnecessary rocking；In gap, by the oil lubricating under splashing or drenching, and presser motion track is made to be only pressing plate camber line track.The most described hole 13 is mounting hole；So-called mounting hole i.e. sets up separately in the substantially central portion on the long limit in hole and is equipped with one and arches upward portion 132, as shown in Figure 5；The design of mounting hole makes the stretching, extension of stretcher 11 more freely.The gap that this mounting hole coordinates with bolt pin also to meet the requirement less than or equal to 2mm.
In the present embodiment, described hole 13 periphery is provided with reinforcement 131, and described reinforcement 131 dissipates setting along described hole 13；This hole 13 is as a example by mounting hole, and described reinforcement 131 dissipates setting along mounting hole；When stress can be avoided in motion process to concentrate, mounting hole tears；As shown in Figure 5, reinforcement 131 and the periphery being arranged on hole 13 at groove 135 interval, inwall 133 thickness along its axial direction of this pore structure is more than outer ring 134 thickness along its axial direction of this pore structure, so can ensure that hole 13 is a plane with the track of bolt pin 12 relative motion, it is ensured that hole 13 can be minimum with relative motion resistance with bolt pin.As shown in Figure 8, be in the embodiment of the present invention Fig. 5 A-A ' to generalized section；Inwall 133 thickness along its axial direction of this pore structure is more than outer ring 134 thickness along its axial direction of this pore structure, due to the existence of reinforcement 131, it is therefore prevented that mounting hole in motion process is it may happen that the situation of tear.In other embodiments, inwall 133 thickness of pore structure might be less that or be equal to the outer ring thickness of this pore structure, as long as ensure that hole 13 is in same plane with the face at movement locus place in bolt pin 12 relative movement and smooths.
Bolt pin described in the embodiment of the present invention 12 is fixed on main body 20(cylinder body or cylinder cap) go up and fall in the face that main body 20 is installed；If Fig. 3 is the first structural representation of embodiment of the present invention bolt pin；Bolt pin 12 include enlarged head 123, polished rod portion 122, for the threaded portion 121 being fixed on main body；Described polished rod portion 122 is between enlarged head 123 and threaded portion 121, can move in polished rod portion 122 relatively in described hole 13；Three parts of bolt pin 12 are formed in one.Described hole and polished rod portion matched in clearance.Polished rod portion 122 coordinates with hole 13, there is gap between polished rod portion 122 and hole 13, and particularly hole 13 is less than or equal to 2MM with gap described in polished rod portion 122 matched in clearance in the direction of the width, it is to avoid produce unnecessary rocking；In gap, by the oil lubricating under splashing or drenching, and presser motion track is made to be only pressing plate camber line track.Hole 13 in the present embodiment is elongate holes, and the diameter of described enlarged head 123 is more than interior spacing L2 between the described long limit of elongate holes two.Enlarged head 123 is to prevent automobile in the process of moving, owing to vibration makes pressing plate come off.Can be that main body is welded to connect when bolt pin 12 is fixed on main body, it is also possible to be one-body molded with main body.
Fig. 4 is the second structural representation of embodiment of the present invention bolt pin；The structure of this bolt pin is on architecture basics as shown in Figure 3, and described bolt pin 12 is arranged with a lining 124, further, is arranged with described lining 124 in polished rod portion 122；This lining 124 can be with the relative motion in more convenient hole 13 with bolt pin 12, it is also possible to bolt pin 12 and the service life in hole 13 when extending relative motion.In specific embodiment, this lining 124 can be tightly secured together with polished rod portion 122；Meanwhile, greasing substance is set between lining 124 and hole 13, the beneficially bolt pin 12 relative motion in hole 13.Certainly, lining 124 mutually can also rotate with polished rod portion 122, make lining 124 and hole 13 and and bolt pin 12 between can form mutually rotation, be equally beneficial for the bolt pin 12 relative motion in hole 13, reduce the friction between three.It addition, as another kind of embodiment, described lining can also be needle bearing, i.e. in polished rod portion 122 can with a sheathed needle bearing, such lining 124 and hole 13 and and bolt pin 12 between friction in relative movement can be less.
In the present embodiment, as in figure 2 it is shown, the leaf spring 15 in stretcher 11 can be one or more, if leaf spring 15 is multiple, described tensioning apparatus also includes the blessing device 151 for fixing multiple leaf spring.If leaf spring 15 is one, then need not accommodate device 151.The two ends in hole 13 have certain difference in height L1, and described hole 13 is positioned vertically higher than described hole 13 near one end of leaf spring 15 away from one end of leaf spring 15.As shown in Figure 6, the present embodiment mesopore 13 is mounting hole, described mounting hole is more slightly higher than one end in the vertical direction of close leaf spring 15 away from one end of leaf spring 15, owing to the movement locus of pressing plate 14 the second end has certain radian, and it is low after front height, this structure of mounting hole, so that pressing plate is minimum in the external stress of tensioning process changed with chain change, eliminates unnecessary friction consumption.
At stretcher 11 with chain change during the tensioning that changes, we it is generally acknowledged that stretcher has three kinds of positions: initial tension position, centre position and limit slack position, the limit slack position i.e. home position of leaf spring.It is initial tension position at the chain installation initial stage: in by stretcher, the reverse compacted position of leaf spring pressing plate compresses chain, so that chain keeps certain tensioning state, now chain is active role power to the power of stretcher, and stretcher is passive reaction force to the power of chain, bolt pin 12 now is positioned in hole 13 one end near stretcher 11.And occur after a period of operation when chain relaxes, stretcher recovers to free state from by pressure condition, compare installation initial position, tensioning maximum radian point moves to chain tension direction, thus compress chain, ensureing chain tension state, be now centre position, centre position is the position between initial tension position and limit slack position.Limit slack position is that acupressure probe is no longer by during the reaction force of timing chain during external force, the mounting hole of pressing plate the second end away from leaf spring one end against position, bolt pin 12 the most now is positioned at the one end in hole 13 away from stretcher 11, during limit slack position, pressing plate is in natural reset condition.
Below as a example by mounting hole is more slightly higher than one end in the vertical direction of close leaf spring 15 away from one end of leaf spring 15, above-mentioned each position is described in detail.
Initial tension position: Fig. 5 is embodiment of the present invention stretcher schematic arrangement schematic diagram when being in initial tension position；I.e. being initially installed to the position on engine, now the radius of the radian of stretcher 11 is maximum；The passive stress of stretcher 11, now, chain is in initial tensioning state when installing, chain can slide along pressing plate, chain has certain tensile force, and then chain has reaction force to pressing plate, makes one end of the close leaf spring of the mounting hole of pressing plate the second end be resisted against on bolt pin.
Centre position: Fig. 6 be embodiment of the present invention stretcher in an intermediate position time schematic arrangement schematic diagram；Along with engine runs, chain has a little elongation or vibration, when chain relaxes, stretcher is under the tension force of self, and pressing plate 14 is under the position-limiting action of bolt pin 12, and stretcher 11 moves upward along pressing plate 14 camber line track, make chain tensioning again, having certain tensile force, and gradually develop from initial tension position toward limit slack position, now bolt pin 12 is positioned at the non-both ends of mounting hole；Described centre position i.e. refers to the position between initial tension position and limit slack position.Stretcher is always maintained at tension chain state, develops toward stretcher reset condition, and after chain is lax, stretcher is in passive stress, or active force state, depending on chain elongation state.
Limit slack position: Fig. 7 is embodiment of the present invention stretcher schematic arrangement schematic diagram when being in limit slack position；Limit slack position be acupressure probe no longer by during the reaction force of chain during external force, the mounting hole of pressing plate the second end away from leaf spring one end against position, now the radius of the radian of stretcher 11 is maximum；During limit slack position, pressing plate is in natural reset condition.
Stretcher carries out tensioning through three of the above location status to chain, the mounting hole pitch-row in the radian direction of tensioner travel is from determining according to service life of chain, leaf spring material performance, the mounting hole pitch-row in the radian direction of tensioner travel is from stretcher can be made at the least restriction range of motion, make stretcher unsuitable excessive to chain tension, cross conference and reduce service life of chain；Mounting hole length direction is typically designed along leaf spring by the change direction of tensioning state to nature.In actual application, can be according to service life of chain and leaf spring material performance, two limit installation dimensions that specification stretcher can move, then re-define mounting hole size.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (8)
1. a tensioning apparatus, this tensioning apparatus is used for keeping chain tension, including stretcher, described stretcher includes pressing plate and leaf spring, the one side of described pressing plate and chain contact, the another side of pressing plate contacts with leaf spring, and the first end of described pressing plate is movably connected on main engine body, it is characterized in that, the second end of described pressing plate arranges porose；This tensioning apparatus also includes: be fixed on main body and can with the bolt pin of described hole relative motion, described bolt pin pass described hole；Described hole is a plane with the track of bolt pin relative motion；Two ends, described hole have difference in height, and described hole is positioned vertically higher than one end near leaf spring, described hole away from one end of leaf spring.
Tensioning apparatus the most according to claim 1, it is characterised in that described hole is elongate holes.
Tensioning apparatus the most according to claim 2, it is characterised in that the long limit of described elongate holes is set to arc.
Tensioning apparatus the most according to claim 1, it is characterised in that described hole and bolt pin matched in clearance.
Tensioning apparatus the most according to claim 1, it is characterised in that described bolt pin include enlarged head, can with the polished rod portion of described hole relative motion, for the threaded portion being fixed on main body；Described polished rod portion is positioned between enlarged head and threaded portion.
Tensioning apparatus the most according to claim 5, it is characterised in that described hole and polished rod portion matched in clearance.
Tensioning apparatus the most according to claim 5, it is characterised in that described hole is elongate holes.
Tensioning apparatus the most according to claim 7, it is characterised in that the diameter of described enlarged head is more than the interior spacing between the described long limit of elongate holes two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210211362.6A CN103511570B (en) | 2012-06-26 | 2012-06-26 | A kind of tensioning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210211362.6A CN103511570B (en) | 2012-06-26 | 2012-06-26 | A kind of tensioning apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103511570A CN103511570A (en) | 2014-01-15 |
| CN103511570B true CN103511570B (en) | 2016-09-07 |
Family
ID=49894799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210211362.6A Active CN103511570B (en) | 2012-06-26 | 2012-06-26 | A kind of tensioning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103511570B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482143A (en) * | 2014-12-01 | 2015-04-01 | 奇瑞汽车股份有限公司 | Timing chain tensioning device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19815692B4 (en) * | 1998-04-08 | 2007-04-26 | Skf Gmbh | chain tensioner |
| JP2001153192A (en) * | 1999-11-24 | 2001-06-08 | Honda Motor Co Ltd | Tensioner device |
| JP2006002711A (en) * | 2004-06-21 | 2006-01-05 | Yamaha Motor Co Ltd | Engine |
| CN100455846C (en) * | 2004-09-01 | 2009-01-28 | 利滕斯汽车合伙公司 | Tensioner for a timing chain |
| US7691018B2 (en) * | 2005-04-01 | 2010-04-06 | Borgwarner, Inc. | Wedge-damped blade tensioner |
| DE102005033015A1 (en) * | 2005-07-15 | 2007-01-18 | Schaeffler Kg | Chain tensioner |
| JP5424446B2 (en) * | 2008-06-26 | 2014-02-26 | ボーグワーナー インコーポレーテッド | Tensioning device |
| CN202732868U (en) * | 2012-06-26 | 2013-02-13 | 比亚迪股份有限公司 | Tension device |
-
2012
- 2012-06-26 CN CN201210211362.6A patent/CN103511570B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103511570A (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202082365U (en) | Belt tightening pulley device | |
| CN103511570B (en) | A kind of tensioning apparatus | |
| JPS62110055A (en) | Tensioner for driving belt | |
| JP2000213607A (en) | Belt tensioner, engine having it, and driving system | |
| CN100416127C (en) | Internal expanding electromagnetic braker | |
| CN202732868U (en) | Tension device | |
| CN101387335A (en) | Tensioner | |
| CN202790357U (en) | Tensioning gear | |
| CN202707965U (en) | Tensioning device | |
| CN202484226U (en) | Drive belt tensioning device | |
| CN102787876A (en) | Rocker arm support structure for engine | |
| KR100933060B1 (en) | A tentionbearing | |
| CN204900711U (en) | Automobile engine is with automatic belt tensioner who has damping member | |
| CN104214206A (en) | Thrust device of engine camshaft | |
| CN209959815U (en) | Pneumatic tensioner | |
| CN100507312C (en) | Traction mechanism guide | |
| CN202690923U (en) | Belt tensioning pulley | |
| CN205859068U (en) | A kind of regulating wheel | |
| CN201787009U (en) | Tensioner | |
| CN212536562U (en) | Automatic tensioning mechanism of belt pulley | |
| CN201047425Y (en) | Universal belt tension pulley of diesel engine | |
| CN202926982U (en) | Pulley automatic tensioning device | |
| CN2772581Y (en) | Two-way follow-up mechanism of driver for sight-seeing vehicle | |
| CN218320435U (en) | Steel wire rope guide wheel device and tower crane | |
| CN205534062U (en) | Tension pulley assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180702 Address after: 518118 3001 and 3007 BYD Road, Pingshan street, Pingshan New District, Shenzhen, Guangdong Patentee after: BYD AUTOMOBILE INDUSTRY CO., LTD. Address before: 518118 BYD Road, Pingshan New District, Shenzhen, Guangdong 3009 Patentee before: Biyadi Co., Ltd. |