CN101122321A - Chain tightening arrangement for automobile engine - Google Patents
Chain tightening arrangement for automobile engine Download PDFInfo
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- CN101122321A CN101122321A CNA2007100706950A CN200710070695A CN101122321A CN 101122321 A CN101122321 A CN 101122321A CN A2007100706950 A CNA2007100706950 A CN A2007100706950A CN 200710070695 A CN200710070695 A CN 200710070695A CN 101122321 A CN101122321 A CN 101122321A
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- push rod
- automobile engine
- chain
- tightening arrangement
- chain tightening
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Abstract
The invention discloses a motorbike engine chain tensioner and belongs to the motorbike transmission technical field. The invention settles the problem that a prior motorbike chain tensioner cannot keep the tension of a chain consistent and the motorbike is provided with a large working noise, and so on. The motorbike engine chain tensioner comprises a tensioner body, a jacking rod in the body, and a jacking rod check mechanism between the jacking rod and the body. An external end of the jacking rod stretches out of the body, while the internal end is inisdie the body. A spring is arranged within the body, and is provided with a winding section wound into a plurality of coils and a free end section. The free end section is fixed inside the body. The external peripheral surface of the winding section jacks the internal end of the jacking rod in a flexible way. When the motorbike is at work, the invention can keep the tension of the chain of the motorbike consistent, and the working noise of the motorbike is effectively reduced. The whole tensioner is simple in the structure and convenient for assembling.
Description
Technical field
The present invention relates to a kind of belt tensioner, relate in particular to the tension device that a kind of chain that is used for motorcycle engine carries out tensioner.
Background technique
The power of motorcycle engine generally transmits by belt or chain.Because motor has revolution fluctuation, chain can elongation in the process of transferring power and cause loose, the reason that this is that the motorcycle engine port timing occurs is not normal, situations such as noise take place.The chain tension device can make chain keep suitable tensioner state, to prevent the appearance of above-mentioned situation.
The structure of existing chain tightening arrangement for automobile engine mainly comprises the tension device body of tubular, is provided with the push rod of being made up of screw rod, swivel nut in body, and an end of swivel nut stretches out the outside of body, the other end be positioned at intrinsic screw flight and be connected.Also be provided with clockwork spring or torsion spring in described body, the screw pair that the potential energy that the clockwork spring of pretension or torsion spring are stored is formed by the screw rod swivel nut will rotatablely move and be converted to straight line motion, and torsion is changed into the outside thrust of swivel nut.The outer end of push rod is provided with top-pressure parts such as press strip or roller, and the top-pressure part roof pressure is on the chain of motorcycle, and when chain occurred being elongated phenomenon in the course of the work, the chain tension device can make it keep certain tensioner degree.But this tension device has following defective:
1, since clockwork spring or torsion spring when discharging institute and store potential energy, along with the number of turns of reversing of clockwork spring or torsion spring changes, torsion is followed variation, the thrust of transformation also changes.Incipient stage, the thrust maximum on the push rod, but the length of stretching out outside body along with push rod is elongated, the thrust that is added on the push rod diminishes gradually, and this makes the tensioner degree that tension device can not allow chain be consistent in the course of the work.
2, change thrust into by the screw pair of push rod again because the thrust of push rod is the torsion that leans on clockwork spring or spring to discharge, be subjected to the influence of screw pair accuracy of manufacturing and friction, make thrust loss; The reason thrust that adds first is extremely unstable, and wave range is big (generally reaching 30%～50%), and the motorcycle operating noise is big to making.
Summary of the invention
The objective of the invention is at the existing the problems referred to above of existing chain tightening arrangement for automobile engine, provide a kind of simple in structure, can in the motorcycle working procedure, allow chain keep the motor cycle engine chain tension device of constant tensioner degree.
Purpose of the present invention can realize by following technical proposal: a kind of chain tightening arrangement for automobile engine, comprise hollow the tension device body, be located at intrinsic push rod, be located at the push rod stopping mechanism between push rod and the body, the outside of body is stretched out in the outer end of push rod, the inner is positioned at body, it is characterized in that, be provided with clockwork spring in the described body, clockwork spring has coiling portion and the free end that is wound into some circles, free end is connected in the body, and the outer circumferential face of coiling portion flexibly roof pressure is located in the inner of push rod.
In the above-mentioned chain tension device, clockwork spring generally is the steel band with certain elasticity and intensity, and clockwork spring begins to be wound into the discoid coiling portion with some circles from an end, and the other end is a free end.Free end on the clockwork spring is connected in the body, and the outer circumferential face of coiling portion flexibly roof pressure on the end face of the inner of push rod.In the time of in push rod is assembled to the tension device body, the push rod roof pressure is on the outer circumferential face of coiling portion on the clockwork spring, and the elastic force of the suffered clockwork spring of push rod can have certain constancy.The above-mentioned effect of being located at the push rod stopping mechanism between push rod and the body is to stop the push rod rollback, promptly when motorcycle travels on the bad road surface of road conditions, chain can easily produce beating by a relatively large margin along with jolting of motorcycle integral body, chain acted on reaction force on the push rod and can make push rod overcome the elastic force of clockwork spring and retract in the body this moment, under the effect of stopping mechanism, push rod can keep relative stability, thereby has also just limited the amplitude that chain is beated, and has reduced noise.
In this chain tightening arrangement for automobile engine, described push rod stopping mechanism comprises the taper chamber between push rod and body, and the taper chamber is along wide outside and narrow inside on the push rod length direction, at the indoor wedging part that is provided with of conical cavity.When push rod stretches out outside body, push rod drives the movement outside of wedging part towards the taper chamber, have gap between wedging part and the push rod this moment, the wedging part can not hinder the motion of push rod, and when push rod in body during lateral movement, push rod makes motion of wedging part and rapid wedging between the wall body of push rod and taper chamber, and push rod can not retract to the body inboard.The wedging part can be steel ball, roller or inclined-plane.This push rod stopping mechanism also can be replaced by the roller that is hinged on the curve cam on the body or be hinged on prejudicially on the body, but the stopping mechanism complex structure of this structure, and inconvenience is installed.
In this chain tightening arrangement for automobile engine, be provided with the steel bushing of annular in the described body, an end of steel bushing is provided with the inside oblique shirt rim of stretching out that is connected as a single entity with it, and described taper chamber is formed between the outer circumferential face of described shirt rim and push rod.
The steel bushing of this structure generally be by metal blank through stamping forming, when the steel ball wedging was between the steel bushing conical surface and push rod outer circumferential face, the invar cover conical surface had certain locking angle of wedge, this makes the wedging part can very stably maintain the wedging state.
In this chain tightening arrangement for automobile engine, the inside and outside both sides in steel bushing in described body are respectively equipped with packing ring and trim ring, and the outside of trim ring is provided with elastic component.Generally be provided with the ladder seam on the body inner side surface, be used to assemble packing ring and trim ring, packing ring and trim ring make above-mentioned steel ball be positioned at the chamber of a sealing.
In this chain tightening arrangement for automobile engine, described elastic component is the compressing tablet of a ring-type, is provided with the outside oblique retaining edge of stretching out that is connected as a single entity with it in the outer edge of compressing tablet.The oblique retaining that stretches out is along having certain elasticity, and retaining is along acting on the body, and this elastic component also can be a spring, but preferably also needs to be provided with a trim ring between spring and the steel bushing to limit steel ball.
In this chain tightening arrangement for automobile engine, be provided with the going barrel of hollow in the described body, the coiling portion on the described clockwork spring is positioned at going barrel, and the free end on the described clockwork spring is connected in the end of going barrel.The free end of clockwork spring is generally suppressed by the end face of going barrel, can certainly make clockwork spring be fixed on the going barrel by the mode of welding, but its inconvenience dismounting.
In this chain tightening arrangement for automobile engine, an end place relative with the push rod outer end on the described body is provided with modified gear, and modified gear links by going barrel and described steel bushing.Make going barrel apply a pressure during work of operation modified gear to steel bushing, steel bushing moves certain distance towards the external part direction of push rod, makes steel bushing and packing ring throw off certain distance, during the stressed rollback of push rod, the steel ball wedging is between the push rod periphery and the steel bushing conical surface, and this moment, push rod can not bounce back; During the reverse operating modified gear,, compressing tablet elasticity moves down certain distance, steel bushing lower end surface contact packing ring because of making steel bushing, steel ball can not arrive between the shirt rim of push rod and steel bushing in wedging, push rod can retract in the body, and this has made things convenient for when changing chain or brachymemma chain, to the operation of this chain tension device.
In this chain tightening arrangement for automobile engine, described modified gear comprises that one is threaded in the plug screw of body end.When the turn plug screw, described going barrel can be followed plug screw and be done along moving on the push rod length direction, thereby steel bushing is moved, and realizes deflection function.
In this chain tightening arrangement for automobile engine, described body is fixed with the guide cylinder of a hollow towards the end of push rod outer end, and described push rod passes guide cylinder.The purpose of guide cylinder is that push rod is led when carrying out axial motion.
In this chain tightening arrangement for automobile engine, in being provided with, the outer end of described guide cylinder, on the outer circumferential face of push rod, is provided with snap ring to bulge loop.Snap ring protrudes on the outer circumferential face of push rod, and when push rod reached the limit position in the body outside, snap ring was connected on the inner peripheral surface of described bulge loop, breaks away from body fully to prevent push rod.
Compared with prior art, beneficial effect of the present invention is:
1, in this tension device, owing to be to utilize coiling portion on the clockwork spring directly to the push rod applied thrust, push rod is in the process that reaches the body outside gradually, coiling portion reels gradually, the elastic force that is produced by coiling portion can not change because of coiling action yet, therefore, the size of suffered elastic force can keep relative constant on the push rod, the pressure that push rod is applied on the chain correspondingly also keeps constant relatively, thereby make chain in the motorcycle working procedure, its tensioner degree can be consistent, and is convenient to the pressure that push rod is applied on the chain is selected, can reduce the operating noise of motorcycle effectively, component relevant on the motorcycle are not fragile.
2, since allow on the clockwork spring coiling portion directly flexibly roof pressure on push rod, make that also whole tension device is simple in structure, be convenient to assembling.
Description of drawings
Fig. 1 is the sectional view of this chain tension device.
Fig. 2 is the cutaway view Amplified image of the pushing sleeve in this chain tension device.
Fig. 3 is the structure for amplifying schematic representation of the packing ring in this chain tension device.
Fig. 4 is the cutaway view Amplified image of the steel bushing in this chain tension device.
Fig. 5 is the cutaway view Amplified image of the compressing tablet in this chain tension device.
Fig. 6 is packing ring, steel bushing, the steel ball key plan when being in the wedging state of the stopping mechanism in this chain tension device.
Fig. 7 is packing ring, steel bushing, the steel ball key plan when being in the adjustment state of the stopping mechanism in this chain tension device.
Among the figure, 1, plug screw; 2, body; 3, push pedal; 4, going barrel; 5, clockwork spring; 51, coiling portion; 52, free end; 6, steel bushing; 61, shirt rim; 7, compressing tablet; 71, retaining edge; 8, guide cylinder; 81, bulge loop; 9, snap ring; 10, push rod; 11, steel ball; 12, packing ring; 121, jack; 13, pushing sleeve; 131, pin.
Embodiment
See Fig. 1, the agent structure of chain tightening arrangement for automobile engine of the present invention is the tension device body 2 of a hollow, is axially arranged with shaft-like push rod 10 along it in body 2, and the outside of body 2 is stretched out in the outer end of push rod 10, and the inner is positioned at body 2.In body 2, also be fixed with clockwork spring 5.Clockwork spring 5 used in the present embodiment is the constant force clockwork spring, this clockwork spring 5 has free end 52 and is wound into the discoid coiling portion 51 of some circles, described free end 52 is connected in the body 2, and the outer circumferential face of coiling portion 51 flexibly roof pressure on the end face of push rod 10 the inners.
Between body 2 and push rod 10, also be provided with and be used to prevent that push rod 10 from retracting to the stopping mechanism in the body 2, on an end relative on the body 2, be provided with modified gear with push rod 10 outer ends, modified gear and stopping mechanism link, and the operation modified gear can be removed the retraction qualification of stopping mechanism to push rod 10.
Above-mentioned stopping mechanism comprises the taper chamber that is formed between body 2 and push rod 10 outer circumferential faces and is located at the indoor steel ball of this conical cavity 11, and the taper chamber is along wide outside and narrow inside on the length direction of push rod 10; In body 2, be provided with the steel bushing 6 of annular, see Fig. 4, one end of steel bushing 6 is provided with the inside oblique shirt rim of stretching out 61 that is connected as a single entity with it, described taper chamber is formed between the outer circumferential face of shirt rim 61 and push rod 10, and the inside and outside both sides of steel bushing 6 are respectively equipped with the packing ring 12 and the trim ring of annular, also are provided with the ladder seam that is used to assemble packing ring 12 on the inner peripheral surface of body 2.Be provided with compressing tablet 7 in the outside of trim ring, see Fig. 5, the retaining of oblique protruding annular is along 71 on the outer periphery of compressing tablet 7, and retaining acts on the body 2 along 71.See Fig. 2, Fig. 3, described packing ring 12 is provided with jack 121, be provided with pushing sleeve 13 cylindraceous in the inboard of packing ring 12, this pushing sleeve 13 is provided with the pin 131 consistent with jack 121 numbers, pin 131 is plugged in the jack 121 with gap, and the end of pin 131 is plugged in the annular groove of above-mentioned steel bushing 6 lower end punching presses formation.Be provided with the going barrel 4 of four prism type in the inboard of pushing sleeve 13, coiling portion 51 on the aforementioned clockwork spring 5 is positioned at going barrel 4, free end 52 on the clockwork spring 5 is hung on the end edge of going barrel 4, pushing sleeve 13 fastens with going barrel 4 and goes up and push down clockwork spring coiling portion 51 peripheries, the inner end of described push rod 10 passes above-mentioned compressing tablet 7, trim ring, steel bushing 6, packing ring 12, pushing sleeve 13 respectively and extend in the going barrel 4, the outer circumferential face of the coiling portion 51 on the clockwork spring 5 flexibly roof pressure on the end face of push rod 10 the inners.The end of going barrel 4 the other ends is socketed with top board 3, and above-mentioned modified gear is one to be threaded in the plug screw 1 of body 2 ends, and the inner end roof pressure of plug screw 1 is on top board 3.
Be provided with circular pit at body 2 near the end of push rod 10 outer ends, in this pit, be connected with a guide cylinder 8 cylindraceous, the retaining on the above-mentioned compressing tablet 7 along 71 flexibly roof pressure in the end of guide cylinder 8.Push rod 10 runs through guide cylinder 8, and the outer end of guide cylinder 8 is provided with interior to bulge loop 81, and is connected with the snap ring 9 of protrusion on the outer circumferential face of push rod 10.When push rod 10 stretched out the limit position in body 2 outsides, snap ring 9 was connected on the internal surface of bulge loop 81.
This chain tightening arrangement for automobile engine generally is to be assemblied on the vehicle frame of motorcycle with vertical direction, and push rod 10 is to chain with straight down direction top.When phenomenon took place to elongate in the motorcycle working procedure chain, under the effect of clockwork spring 5 upper elasticities, push rod 10 was towards the direction displacement of chain, thereby makes chain keep certain tensioner degree.For the aforesaid taper chamber that is formed between body 2 and the push rod 10, this taper chamber is along having less cone angle on push rod 10 length directions, and promptly steel ball 11 can form certain wedging angle with the taper chamber.Need allow stopping mechanism to the limited tailor-made time spent of the retraction of push rod 10, screw plug screw 1, plug screw 1 end push pedal 3, through going barrel 4, pushing sleeve 13, move a certain distance compressing tablet 7 compressions at this moment towards push rod 10 outer ends thereby promote steel bushing 6, see Fig. 6, steel bushing 6 lower end surfaces break away from packing ring 12; When push rod 10 had the trend that retracts in the body 2, steel ball 11 meeting wedgings were between described shirt rim 61 and push rod 10, thus the retraction of qualification push rod 10.And it to be artificial when making push rod 10 retractions when needing, can unscrew plug screw 1 and make going barrel 4 lower ends vacate certain space, compressing tablet 7 elastic force promotion steel bushing 6 moves towards the interior extreme direction of push rod 10, see Fig. 7, steel bushing 6 lower end surfaces contact packing ring 12, at this moment, can not form the wedging state between described steel bushing 6, push rod 10, the steel ball 11, and can have the gap between the outer circumferential face of steel ball 11 and push rod 10, under the effect of external force, push rod 10 can be in body 2 rollback.
Claims (10)
1. chain tightening arrangement for automobile engine, the tension device body (2) that comprises hollow, be located at the push rod (10) in the body (2), be located at the push rod stopping mechanism between push rod (10) and the body (2), the outside of body (2) is stretched out in the outer end of push rod (10), the inner is positioned at body (2), it is characterized in that, be provided with clockwork spring (5) in the described body (2), clockwork spring (5) has coiling portion (51) and the free end (52) that is wound into some circles, free end (52) is connected in the body (2), and the outer circumferential face of coiling portion (51) flexibly roof pressure is located in the inner of push rod (10).
2. chain tightening arrangement for automobile engine according to claim 1, it is characterized in that, described push rod stopping mechanism comprises the taper chamber that is positioned between push rod (10) and the body (2), and the taper chamber is along wide outside and narrow inside on push rod (10) length direction, at the indoor wedging part that is provided with of conical cavity.
3. chain tightening arrangement for automobile engine according to claim 2, it is characterized in that, be provided with the steel bushing (6) of annular in the described body (2), one end of steel bushing (6) is provided with the inside oblique shirt rim of stretching out (61) that is connected as a single entity with it, and described taper chamber is formed between the outer circumferential face of described shirt rim (61) and push rod (10).
4. according to claim 2 or 3 described chain tightening arrangement for automobile engine, it is characterized in that be respectively equipped with packing ring (12) and trim ring in the inside and outside both sides of steel bushing (6) in described body (2), the outside of trim ring is provided with elastic component.
5. chain tightening arrangement for automobile engine according to claim 4 is characterized in that, described elastic component is the compressing tablet (7) of a ring-type, is provided with the outside oblique retaining that stretches out that is connected as a single entity with it along (71) in the outer edge of compressing tablet (7).
6. chain tightening arrangement for automobile engine according to claim 5, it is characterized in that, be provided with the going barrel (4) of hollow in the described body (2), coiling portion (51) on the described clockwork spring (5) is positioned at going barrel (4), and the free end (52) on the described clockwork spring (5) is connected in the end of going barrel (4).
7. chain tightening arrangement for automobile engine according to claim 6 is characterized in that, described body (2) is gone up an end place relative with push rod (10) outer end and is provided with modified gear, and modified gear links by going barrel (4) and described steel bushing (6).
8. chain tightening arrangement for automobile engine according to claim 7 is characterized in that, described modified gear comprises that one is threaded in the plug screw (1) of body (2) end.
9. according to claim 1,2 or 3 described chain tightening arrangement for automobile engine, it is characterized in that described body (2) is fixed with the guide cylinder (8) of a hollow towards the end of push rod (10) outer end, described push rod (10) passes guide cylinder (8).
10. chain tightening arrangement for automobile engine according to claim 9 is characterized in that, to bulge loop (81), is provided with snap ring (9) on the outer circumferential face of push rod (10) in the outer end of described guide cylinder (8) is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100706950A CN101122321B (en) | 2007-09-06 | 2007-09-06 | Chain tightening arrangement for automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100706950A CN101122321B (en) | 2007-09-06 | 2007-09-06 | Chain tightening arrangement for automobile engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101122321A true CN101122321A (en) | 2008-02-13 |
| CN101122321B CN101122321B (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100706950A Active CN101122321B (en) | 2007-09-06 | 2007-09-06 | Chain tightening arrangement for automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101122321B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615509A (en) * | 2013-12-12 | 2014-03-05 | 玉环中本机械有限公司 | Tensioner of chain of motorcycle engine |
| CN109531400A (en) * | 2018-12-10 | 2019-03-29 | 浙江大学台州研究院 | Motorcycle Mainspring type tension device grinds measuring mechanism |
| CN109794765A (en) * | 2018-12-10 | 2019-05-24 | 浙江大学台州研究院 | Motorcycle Mainspring type tension device automatic assembling detects production line |
| CN111133227A (en) * | 2017-09-29 | 2020-05-08 | 本田技研工业株式会社 | Hydraulic tensioner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5524725A (en) * | 1994-07-01 | 1996-06-11 | Arctco, Inc. | Automatic chain tension adjustor |
| CN2931937Y (en) * | 2006-07-28 | 2007-08-08 | 高喜 | Tension device of motorbicycle engine chain |
| CN201090691Y (en) * | 2007-09-06 | 2008-07-23 | 高喜 | Tightening device of motorcycle engine chain |
-
2007
- 2007-09-06 CN CN2007100706950A patent/CN101122321B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615509A (en) * | 2013-12-12 | 2014-03-05 | 玉环中本机械有限公司 | Tensioner of chain of motorcycle engine |
| CN103615509B (en) * | 2013-12-12 | 2016-06-29 | 玉环中本机械有限公司 | A kind of chain tightening arrangement for automobile engine |
| CN111133227A (en) * | 2017-09-29 | 2020-05-08 | 本田技研工业株式会社 | Hydraulic tensioner |
| CN111133227B (en) * | 2017-09-29 | 2023-03-31 | 本田技研工业株式会社 | Hydraulic tensioner |
| CN109531400A (en) * | 2018-12-10 | 2019-03-29 | 浙江大学台州研究院 | Motorcycle Mainspring type tension device grinds measuring mechanism |
| CN109794765A (en) * | 2018-12-10 | 2019-05-24 | 浙江大学台州研究院 | Motorcycle Mainspring type tension device automatic assembling detects production line |
| CN109794765B (en) * | 2018-12-10 | 2020-10-30 | 浙江大学台州研究院 | Automatic assembling and detecting production line for spring type tensioner of motorcycle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101122321B (en) | 2012-02-08 |
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Owner name: YUHUAN ZHONGBEN MACHINERY CO., LTD. Free format text: FORMER OWNER: GAO XI Effective date: 20100511 |
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Free format text: CORRECT: ADDRESS; FROM: 317602 YUHUAN ZHONGBEN MACHINERY CO., LTD., HAICHENG ROAD,KANMEN, ZHUGANG CITY, YUHUAN COUNTY, ZHEJIANG PROVINCE. TO: 317602 KANMENHAICHENG ROAD, ZHUGANG TOWN, YUHUAN COUNTY, ZHEJIANG PROVINCE |
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Effective date of registration: 20100511 Address after: 317602 Yuhuan County Town, Zhujiang Town, Zhejiang, Haicheng Province, Kanmen Applicant after: YUHUAN ZHONGBEN MACHINERY CO., LTD. Address before: 317602 Yuhuan County Kanmen Town, Haicheng Road, Yuhuan, China Zhejiang Machinery Co., Ltd. Applicant before: Gao Xi |
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Address after: 317602 Haicheng Road, Kanmen, Zhugang Town, Yuhuan County, Zhejiang Province Patentee after: Zhejiang Zhongben Machinery Co., Ltd. Address before: 317602 Haicheng Road, Kanmen, Zhugang Town, Yuhuan County, Zhejiang Province Patentee before: YUHUAN ZHONGBEN MACHINERY CO., LTD. |