CN105059466A - Gear shift mechanism for motorcycle - Google Patents
Gear shift mechanism for motorcycle Download PDFInfo
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- CN105059466A CN105059466A CN201510483923.1A CN201510483923A CN105059466A CN 105059466 A CN105059466 A CN 105059466A CN 201510483923 A CN201510483923 A CN 201510483923A CN 105059466 A CN105059466 A CN 105059466A
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- gear
- output shaft
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- lock groove
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Abstract
The invention relates to a gear shift mechanism for a motorcycle. The gear shift mechanism comprises an input shaft, an output shaft, one or more gear transmission groups which are connected with the input shaft and output shaft, a shifting fork, and a shifting fork cam driving the shifting fork to move, wherein each gear transmission group comprises an input gear arranged on the input shaft, and an output gear arranged on the output shaft, and the input gear and the output gear respectively comprise a first gear input gear and a first gear output gear; a transmission gear which can be connected with the first gear output gear is arranged on the output shaft, locking grooves are formed in the output shaft, unlocking holes are formed in the transmission gear corresponding to the locking grooves, steel balls are arranged between the unlocking holes and the locking grooves, the height of the steel balls is higher than the depth of the locking grooves, and the depth of the unlocking holes is greater than the height of the steel balls. According to the gear shift mechanism disclosed by the invention, the proper operation of entering 1-gear state, 2-gear state and 3-gear state sequentially and necessarily is ensured through reasonable arrangement of the structure, faulty operation of users can be prevented, and the safety of staff and the motorcycle is ensured.
Description
Technical field
The present invention relates to a kind of gearshift of motor bike.
Background technology
The gearshift of motor cycle engine is a kind of technology of comparative maturity, common gearshift is after engine starting, and passable carries out gear-change operation, but a lot of user can in second gear or high-grade starting sometimes, hidden danger is brought to traffic safety, wearing and tearing are caused to engine clucht.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the invention provides a kind of imperative operation person must start by neutral gear, and after starting, gear shift must be introduced into the motorcycle gear shifter of a grade.
The technical scheme that the present invention solves its technical matters is:
A kind of motorcycle gear shifter, comprise input shaft, output shaft, connect the gear transmission group of input shaft and output shaft more than one group, shift fork, drive the shift fork cam of shift fork motion, described gear transmission group comprises the input gear be arranged on input shaft and the output gear be arranged on output shaft, described input gear, output gear includes one grade of input gear respectively, one grade of output gear, described output shaft is provided with the transmission gear that can connect one grade of output gear, it is characterized in that: described output shaft offers lock groove, on described transmission gear, corresponding lock groove position offers unlock hole, steel ball is provided with between described unlock hole and lock groove, the height of described steel ball is higher than the degree of depth of lock groove, the degree of depth of described unlock hole is greater than the height of steel ball.
As preferably, lock groove, unlock hole are respectively arranged with three, and become 120 degree of distributions.
As preferably, the width of lock groove is at least transmission gear is slidably connected to one grade of output gear sliding distance by neutral state.
As preferably, transmission gear and output shaft spline joint, described lock groove is arranged on the spline tooth groove center of described output shaft, and described unlock hole is arranged on the spline tooth top center of described transmission gear.
As preferably, the guide channel line style coupling transmission gear sliding trace on shift fork cam.
One grade of output gear is arranged on output shaft by axle sleeve, namely when one grade of output gear rotates, do not drive output shaft rotation, shift fork is needed to be promoted to be connected with a joggle on one grade of output gear by transmission gear, and transmission gear and output shaft are synchronous axial system, then one grade of input gear drives one grade of output gear and transmission gear to rotate, and transmission gear drives output shaft rotation, realizes Power output.Stirring of transmission gear is realized by shift fork, and the motion of shift fork is realized by shift fork cam, and in shift process, shift fork cam rotates, and realizes gear shift.
In prior art, a lot of user in second gear or high-grade starting, can bring hidden danger to traffic safety, causes wearing and tearing to engine clucht.And the present invention can avoid this situation to occur.
The present invention is provided with lock groove, steel ball, unlock hole, when neutral gear, steel ball is positioned at lock groove, and be positioned at lock groove end, the corresponding lock groove of the unlock hole of transmission gear, during gear shift, due to the reason of steel ball and lock groove, transmission gear can only move to the lock groove other end the one grade of output gear that is connected with a joggle, namely can only one grade of starting.And in other cases, when shift cam drives fork that transmission gear is moved along output shaft to reversing sense, transmission gear can not move because steel ball stops at lock groove end.Transmission gear can not oppositely movement, namely can not second gear or high-grade starting.After one grade of starting, transmission gear rotates, and due to the effect of centnifugal force, steel ball is dumped in unlock hole, and now, transmission gear can be free to slide, and can enter second gear or other gears.Thus when ensure that Vehicular shift, 1 grade must be introduced into, and then enter the proper operation of 2 grades, 3 grades, can user misoperation be prevented, ensure that the safety of personnel and vehicle.
Lock groove, unlock hole are respectively arranged with three, and become 120 degree of circle distribution.The width of lock groove is at least transmission gear is slidably connected to one grade of output gear sliding distance by neutral state.Transmission gear and output shaft spline joint, described lock groove is arranged on the spline tooth groove center of output shaft, and unlock hole is arranged on the spline tooth top center of described transmission gear, and namely lock groove is corresponding with unlock hole position.
The present invention is by the cooperation of lock groove, steel ball, unlock hole, make when starting to walk, transmission gear can only move along some specific directions, the guide channel line style of one grade of output gear and shift fork cam is coordinated to arrange again, when then ensure that starting, transmission gear can only move by forward, when reversing sense moves, transmission gear can not move because steel ball stops at lock groove end, when ensure that Vehicular shift, 1 grade must be introduced into, and then enter the proper operation of 2 grades, 3 grades, can user misoperation be prevented, ensure that the safety of personnel and vehicle.
Beneficial effect of the present invention is: the present invention, by the rational setting of structure, when ensure that Vehicular shift, must be introduced into 1 grade, and then enter the proper operation of 2 grades, 3 grades, can prevent user misoperation, ensure that the safety of personnel and vehicle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As Fig. 1, shown in 2, a kind of motorcycle gear shifter, comprise input shaft 1, output shaft 7, connect the gear transmission group of input shaft and output shaft more than one group, shift fork 10, drive the shift fork cam 13 of shift fork motion, shift fork 10 is arranged on declutch shift shaft 11, shift fork cam is arranged guide channel 12, gear transmission group comprises the input gear be arranged on input shaft and the output gear be arranged on output shaft, described input gear, output gear includes one grade of input gear 2 respectively, one grade of output gear 9, input shaft is provided with five grades of input gears 4, output shaft is provided with the transmission gear 8 that can connect one grade of output gear.One grade of output gear 9 is arranged on output shaft 7 by axle sleeve, namely when one grade of output gear rotates, do not drive output shaft rotation, shift fork is needed to be promoted to be connected with a joggle on one grade of output gear 9 by transmission gear 8, and transmission gear 8 and output shaft 7 are synchronous axial system, then one grade of input gear drives one grade of output gear and transmission gear to rotate, and transmission gear drives output shaft rotation, realizes Power output.Stirring of transmission gear is realized by shift fork 10, and the motion of shift fork is driven by declutch shift shaft 11, and declutch shift shaft slides in the guide channel 12 of shift fork cam 13, and in shift process, shift fork cam rotates, and realizes gear shift.
Output shaft 7 offers lock groove 3, and on transmission gear 8, corresponding lock groove position offers unlock hole 5, is provided with steel ball 6 between unlock hole 5 and lock groove 3, and the height of steel ball is higher than the degree of depth of lock groove, and the degree of depth of unlock hole is greater than the height of steel ball.Lock groove 3, unlock hole 5 are respectively arranged with three, and become 120 degree of circle distribution.The width of lock groove 3 is at least transmission gear is slidably connected to one grade of output gear sliding distance by neutral state.
Transmission gear 8 and output shaft 7 spline joint, described lock groove is arranged on the spline tooth groove center of described output shaft, and described unlock hole is arranged on the spline tooth top center of described transmission gear.Guide channel 12 line style coupling transmission gear sliding trace on shift fork cam.
In prior art, a lot of user in second gear or high-grade starting, can bring hidden danger to traffic safety, causes wearing and tearing to engine clucht.And the present invention can avoid this situation to occur.
The present invention is provided with lock groove 3, steel ball 6, unlock hole 5, when neutral gear, steel ball 6 is positioned at lock groove 3, and be positioned at lock groove end, the corresponding lock groove of unlock hole 5 of transmission gear, during gear shift, due to the reason of steel ball and lock groove, transmission gear can only move to the lock groove other end the one grade of output gear 9 that is connected with a joggle, namely can only one grade of starting.And in other cases, when shift cam drives fork 10 that transmission gear is moved along output shaft to reversing sense, transmission gear can not move because steel ball stops at lock groove end.Transmission gear 8 can not oppositely movement, namely can not second gear or high-grade starting.After one grade of starting, transmission gear rotates, and due to the effect of centnifugal force, steel ball 6 is dumped in unlock hole 5, and now, transmission gear can be free to slide, and can enter second gear or other gears.Thus when ensure that Vehicular shift, 1 grade must be introduced into, and then enter the proper operation of 2 grades, 3 grades, can user misoperation be prevented, ensure that the safety of personnel and vehicle.
Lock groove, unlock hole are respectively arranged with three, and become 120 degree of distributions.The width of lock groove 3 is at least transmission gear is slidably connected to one grade of output gear 9 sliding distance by neutral state.Transmission gear 8 and output shaft 7 spline joint, described lock groove 3 is arranged on the spline tooth groove center of output shaft 7, and unlock hole is arranged on the spline tooth top center of described transmission gear, and namely lock groove is corresponding with unlock hole position.
The present invention is by the cooperation of lock groove, steel ball, unlock hole, make when starting to walk, transmission gear can only move along some specific directions, the guide channel line style of one grade of output gear and shift fork cam is coordinated to arrange again, when then ensure that starting, transmission gear can only move by forward, when reversing sense moves, transmission gear can not move because steel ball stops at lock groove end, when ensure that Vehicular shift, 1 grade must be introduced into, and then enter the proper operation of 2 grades, 3 grades, can user misoperation be prevented, ensure that the safety of personnel and vehicle.
The present invention, by the rational setting of structure, when ensure that Vehicular shift, must be introduced into 1 grade, and then enter the proper operation of 2 grades, 3 grades, can prevent user misoperation, ensure that the safety of personnel and vehicle.
Claims (5)
1. a motorcycle gear shifter, comprise input shaft, output shaft, connect the gear transmission group of input shaft and output shaft more than one group, shift fork, drive the shift fork cam of shift fork motion, described gear transmission group comprises the input gear be arranged on input shaft and the output gear be arranged on output shaft, described input gear, output gear includes one grade of input gear respectively, one grade of output gear, described output shaft is provided with the transmission gear that can connect one grade of output gear, it is characterized in that: described output shaft offers lock groove, on described transmission gear, corresponding lock groove position offers unlock hole, steel ball is provided with between described unlock hole and lock groove, the height of described steel ball is higher than the degree of depth of lock groove, the degree of depth of described unlock hole is greater than the height of steel ball.
2. a kind of motorcycle gear shifter according to claim 1, is characterized in that: described lock groove, unlock hole are respectively arranged with three, and becomes 120 degree of distributions.
3. a kind of motorcycle gear shifter according to claim 2, is characterized in that: the width of described lock groove is at least transmission gear is slidably connected to one grade of output gear sliding distance by neutral state.
4. a kind of motorcycle gear shifter according to claim 3, it is characterized in that: described transmission gear and output shaft spline joint, described lock groove is arranged on the spline tooth groove center of described output shaft, and described unlock hole is arranged on the spline tooth top center of described transmission gear.
5. a kind of motorcycle gear shifter according to claim 4, is characterized in that: the guide channel line style coupling transmission gear sliding trace on described shift fork cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510483923.1A CN105059466A (en) | 2015-08-10 | 2015-08-10 | Gear shift mechanism for motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510483923.1A CN105059466A (en) | 2015-08-10 | 2015-08-10 | Gear shift mechanism for motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105059466A true CN105059466A (en) | 2015-11-18 |
Family
ID=54489065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510483923.1A Pending CN105059466A (en) | 2015-08-10 | 2015-08-10 | Gear shift mechanism for motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105059466A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805299A (en) * | 2016-05-25 | 2016-07-27 | 重庆隆鑫发动机有限公司 | Gear shifting protection speed changer and engine |
| CN105840813A (en) * | 2016-05-25 | 2016-08-10 | 重庆隆鑫发动机有限公司 | Position limiting mechanism for transmission shifting and transmission |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5969565A (en) * | 1982-10-13 | 1984-04-19 | Mitsubishi Electric Corp | Stepless speed change gear |
| CN102359588A (en) * | 2011-10-31 | 2012-02-22 | 浙江春风动力股份有限公司 | Driven gear device for motorcycle engine |
| CN204871456U (en) * | 2015-08-10 | 2015-12-16 | 宁波市龙嘉摩托车有限公司 | Motorcycle shifter |
-
2015
- 2015-08-10 CN CN201510483923.1A patent/CN105059466A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5969565A (en) * | 1982-10-13 | 1984-04-19 | Mitsubishi Electric Corp | Stepless speed change gear |
| CN102359588A (en) * | 2011-10-31 | 2012-02-22 | 浙江春风动力股份有限公司 | Driven gear device for motorcycle engine |
| CN204871456U (en) * | 2015-08-10 | 2015-12-16 | 宁波市龙嘉摩托车有限公司 | Motorcycle shifter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805299A (en) * | 2016-05-25 | 2016-07-27 | 重庆隆鑫发动机有限公司 | Gear shifting protection speed changer and engine |
| CN105840813A (en) * | 2016-05-25 | 2016-08-10 | 重庆隆鑫发动机有限公司 | Position limiting mechanism for transmission shifting and transmission |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |