CN102168592B - Decompression mechanism for pedal start of motorcycle engine - Google Patents
Decompression mechanism for pedal start of motorcycle engine Download PDFInfo
- Publication number
- CN102168592B CN102168592B CN 201110139588 CN201110139588A CN102168592B CN 102168592 B CN102168592 B CN 102168592B CN 201110139588 CN201110139588 CN 201110139588 CN 201110139588 A CN201110139588 A CN 201110139588A CN 102168592 B CN102168592 B CN 102168592B
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- China
- Prior art keywords
- exhaust valve
- recoil
- pressing plate
- control arm
- motorcycle engine
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- 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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Abstract
The invention provides a decompression mechanism for pedal start of a motorcycle engine. The decompression mechanism comprises a recoil shaft, an exhaust valve rocker arm and an exhaust valve, as well as a pressure plate, a rotatable operating arm and a rotating shaft provided with a reset torsion spring, wherein the pressure plate is fixedly arranged on top of a rod part of the exhaust valve and extends out of the side of the rod part of the exhaust valve; the operating arm is provided with a cam matched with the pressure plate; the periphery of the rotating shaft is fixedly provided with a connecting plate and a pressing block that are mutually parallel; the end of the connecting plate and the operating arm are connected through an inhaul cable; the periphery of the recoil shaft is provided with a lug; and the pressing block clings to the lower side of the lug under the elastic force of the reset torsion spring. With the decompression mechanism, the compression pressure in an air cylinder can be released while a user treads on a recoil starting lever. The decompression mechanism reduces the recoil in pedal start of the engine, and has the benefits of convenience and labor saving in pedal start of the engine.
Description
Technical field
The present invention relates to a kind of motorcycle engine and start the mechanism of decompressor, especially relate to the mechanism of decompressor that motorcycle engine feet is stepped on startup.
Background technique
Motorcycle engine the start up period, need to provide normal working of engine needed startup rotating speed by external force, this external force is used for overcoming the reaction force of surface friction drag and engine compresses process, and the size of reaction force is determined by compression ratio and the discharge capacity of motor.Motorcycle engine all is to provide external force to start to drive crankshaft operation by motor usually, and motor reaches voluntarily running behind certain rotating speed, and motor breaks away from bent axle; When motor can't work, for guaranteeing that motorcycle can normally start, motorcycle is furnished with foot-operated recoil starting drive usually, step fast the recoil starting bar by pin exactly, the recoil starting bar arrives engine crankshaft with power by the gear transmission on the recoil axle, make engine crankshaft running and reach the design minimum speed of motorcycle engine, thereby make engine start.When engine displacement hour, the recoil resistance of motor is less, thereby easily just can step the recoil starting bar with pin and make engine running, yet when engine displacement reaches 200cc when above, with foot-operated moving just effort very, the user that strength is little may just not move motor with human hair combing waste, namely the said function of certain customers is idle, the function that the have more than is needed foot-operated recoil of the user that strength is little starts after electricity starts damage, is not brought into play the function that foot-operated recoil starts.
Summary of the invention
The technical problem that the present invention solves is: the mechanism of decompressor that provides a kind of motorcycle engine feet to step on startup can make things convenient for, labour-saving pin ato unit.
Technological scheme of the present invention is: a kind of motorcycle engine feet is stepped on the mechanism of decompressor of startup, comprise recoil axle, exhaust valve rocker arm and exhaust valve, the two ends of described exhaust valve rocker arm are made as respectively valve connecting part and cam connecting part, be fixedly connected with between the valve connecting part of described exhaust valve rocker arm and the bar section of exhaust valve, it is characterized in that: also comprise a pressing plate, this pressing plate is fixedly installed on the top of described exhaust valve rod section, and this pressing plate extends the side of exhaust valve rod section; One rotatable control arm, this control arm is provided with the cam that matches with described pressing plate; One is provided with the rotating shaft of reduction torsion spring, is fixed with the connecting plate and the briquetting that are parallel to each other on the circumference of this rotating shaft; Wherein, be connected by drag-line between the end of described connecting plate and the described control arm, the circumference of described recoil axle is provided with a projection, and described briquetting is close to the downside of described projection under the elastic force effect of described reduction torsion spring.
Cam on the control arm is half-cylindrical.
The cam of described control arm, described control arm has same shaft axis.
The valve connecting part of described exhaust valve rocker arm, described pressing plate all with between the bar section of described exhaust valve are fixedly connected with by locking nut.
Valve connecting part and the described pressing plate of described exhaust valve rocker arm are formed in one.
The invention has the beneficial effects as follows: control arm rotates and is arranged on the cylinder head, the position of rotating shaft is near the recoil axle, when the user has just stepped the recoil starting bar, the recoil starting bar drives the recoil axle and rotates, the projection of axle of recoiling this moment presses the briquetting of rotating shaft, thereby so that briquetting and connecting plate rotate simultaneously, owing to be connected by drag-line between the end of connecting plate and the control arm, therefore the rotation of connecting plate is so that control arm also produces corresponding rotation, cam on the control arm presses the pressing plate that is fixedly installed on exhaust valve rod section downwards at this moment, thereby pressing plate promotes exhaust valve rod section and forces valve opening, lay down the compression pressure in the cylinder behind the valve opening, reduce the running resistance of engine crankshaft, promote the speed of crankshaft of motor, make motor in the little situation of external force, satisfy the starting speed of motor, pilot engine.The invention enables the user when stepping the recoil starting bar, can lay down the compression pressure in the cylinder, the recoil when reducing pedal starting engine has conveniently, the beneficial effect of labour-saving pedal ato unit.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the control arm among the present invention;
Fig. 3 is that the A-A of Fig. 2 is to schematic representation;
Fig. 4 is the structural representation of rotating shaft, connecting plate and briquetting among the present invention;
Fig. 5 is the knot intention of projection among the present invention and the state between the briquetting one;
Fig. 6 is the knot intention of projection among the present invention and the state between the briquetting two.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
Referring to Fig. 1～Fig. 6, a kind of motorcycle engine feet is stepped on the mechanism of decompressor of startup, comprises recoil axle 1, exhaust valve rocker arm 2, exhaust valve 3, pressing plate 4, control arm 5, reduction torsion spring 6, rotating shaft 7 and drag-line 9.The two ends of exhaust valve rocker arm 2 are made as respectively valve connecting part and cam connecting part, be fixedly connected with between the valve connecting part of exhaust valve rocker arm 2 and the bar section of exhaust valve 3, pressing plate 4 is fixedly installed on the top of exhaust valve 3 bar sections, and this pressing plate 4 extends the side of exhaust valve 3 bar sections; Control arm 5 rotates and is arranged on the cylinder head, and this control arm 5 is provided with the cam 5a that matches with pressing plate 4, and the cam 5a on the control arm is half-cylindrical, and the cam 5a of control arm 5, control arm has same shaft axis.Reduction torsion spring 6 is arranged in the rotating shaft 7, is fixed with the connecting plate 7a and the briquetting 7b that are parallel to each other on the circumference of this rotating shaft 7.Be connected by drag-line 9 between the end of connecting plate 7a and the control arm 5, the circumference of recoil axle 1 is provided with a projection 1a, and briquetting 7b is close to the downside of projection 1a under the elastic force effect of reduction torsion spring 6.The valve connecting part of exhaust valve rocker arm 2, pressing plate 4 all with between the bar section of exhaust valve 3 are fixedly connected with by locking nut 8.Valve connecting part and the pressing plate 4 of exhaust valve rocker arm 2 are formed in one.
Working principle of the present invention is:
When motor is in foot-operated starting state: referring to Fig. 5, when the user has just stepped the recoil starting bar, the recoil starting bar drives the recoil axle and rotates, the projection 1a of axle 1 of recoiling this moment presses the briquetting 7b of rotating shaft downwards, thereby so that briquetting 7b and connecting plate rotate simultaneously, owing to be connected by drag-line between the end of connecting plate and the control arm, therefore the rotation of connecting plate is so that control arm also produces corresponding rotation, cam on the control arm presses the pressing plate that is fixedly installed on exhaust valve rod section downwards at this moment, thereby pressing plate promotes exhaust valve rod section and forces valve opening, lay down the compression pressure in the cylinder behind the valve opening, reduce the running resistance of engine crankshaft, promote the speed of crankshaft of motor, make motor in the little situation of external force, satisfy the starting speed of motor, pilot engine.
When motor is in foot-operated startup done state: referring to Fig. 6, the effect of reduction torsion spring 6 is to allow rotating shaft 7 returns, simultaneously rotating shaft 7 drives the connecting plate return, the connecting plate return drives the drag-line return, drag-line drives the control arm return, plate cylindrical cam and pressing plate on the control arm are thrown off mutually, and exhaust valve normally cuts out, engine work.
Claims (5)
1. a motorcycle engine feet is stepped on the mechanism of decompressor of startup, comprise recoil axle (1), exhaust valve rocker arm (2) and exhaust valve (3), the two ends of described exhaust valve rocker arm (2) are made as respectively valve connecting part and cam connecting part, be fixedly connected with between the bar section of the valve connecting part of described exhaust valve rocker arm (2) and exhaust valve (3), it is characterized in that: also comprise
One pressing plate (4), this pressing plate (4) is fixedly installed on the top of described exhaust valve (3) bar section, and this pressing plate (4) extends the side of exhaust valve (3) bar section;
One rotatable control arm (5), this control arm (5) are provided with the cam (5a) that matches with described pressing plate (4);
One is provided with the rotating shaft (7) of reduction torsion spring (6), is fixed with the connecting plate (7a) and the briquetting (7b) that are parallel to each other on the circumference of this rotating shaft (7);
Wherein, be connected by drag-line (9) between the end of described connecting plate (7a) and the described control arm (5), the circumference of described recoil axle (1) is provided with a projection (1a), and described briquetting (7b) is close to the downside of described projection (1a) under the elastic force effect of described reduction torsion spring (6).
2. step on the mechanism of decompressor of startup according to motorcycle engine feet claimed in claim 1, it is characterized in that: the cam on the control arm (5a) is for half-cylindrical.
3. step on the mechanism of decompressor of startup according to motorcycle engine feet claimed in claim 1, it is characterized in that: the cam (5a) of described control arm (5), described control arm has same shaft axis.
4. step on the mechanism of decompressor of startup according to motorcycle engine feet claimed in claim 1, it is characterized in that: the valve connecting part of described exhaust valve rocker arm (2), described pressing plate (4) all with between the bar section of described exhaust valve (3) are fixedly connected with by locking nut (8).
5. step on the mechanism of decompressor of startup according to motorcycle engine feet claimed in claim 1, it is characterized in that: the valve connecting part of described exhaust valve rocker arm (2) and described pressing plate (4) are formed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110139588 CN102168592B (en) | 2011-05-27 | 2011-05-27 | Decompression mechanism for pedal start of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110139588 CN102168592B (en) | 2011-05-27 | 2011-05-27 | Decompression mechanism for pedal start of motorcycle engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102168592A CN102168592A (en) | 2011-08-31 |
| CN102168592B true CN102168592B (en) | 2013-01-16 |
Family
ID=44489890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110139588 Expired - Fee Related CN102168592B (en) | 2011-05-27 | 2011-05-27 | Decompression mechanism for pedal start of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102168592B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362590B (en) * | 2013-05-08 | 2015-05-13 | 浙江日晟农林科技有限公司 | Engine starting pressure relief mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451737Y (en) * | 2000-12-09 | 2001-10-03 | 重庆力帆轰达实业(集团)有限公司 | Decompressor of engine |
| CN2653136Y (en) * | 2003-01-09 | 2004-11-03 | 伍本银 | Pressure reducer for motorcycle engine |
| CN2692351Y (en) * | 2004-04-13 | 2005-04-13 | 重庆大江摩托车发动机制造有限公司 | Pressure redueing device of motorcar vertical engine |
| CN202117729U (en) * | 2011-05-27 | 2012-01-18 | 重庆建设摩托车股份有限公司 | Pressure relief mechanism for pedaled start of motorcycle engine |
-
2011
- 2011-05-27 CN CN 201110139588 patent/CN102168592B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451737Y (en) * | 2000-12-09 | 2001-10-03 | 重庆力帆轰达实业(集团)有限公司 | Decompressor of engine |
| CN2653136Y (en) * | 2003-01-09 | 2004-11-03 | 伍本银 | Pressure reducer for motorcycle engine |
| CN2692351Y (en) * | 2004-04-13 | 2005-04-13 | 重庆大江摩托车发动机制造有限公司 | Pressure redueing device of motorcar vertical engine |
| CN202117729U (en) * | 2011-05-27 | 2012-01-18 | 重庆建设摩托车股份有限公司 | Pressure relief mechanism for pedaled start of motorcycle engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102168592A (en) | 2011-08-31 |
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| 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 | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151116 Address after: 400054 Banan District, Chongqing building Avenue, No. 2, building 1 Patentee after: CHONGQING CONSTRUCTION ELECTROMECHANICAL CO., LTD. Address before: 400054 Huaxi Industrial Park, Banan District, Chongqing Road, No. 1 Patentee before: Chongqing Jianshe Motorcycle Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20180527 |