CN101109439A - Gear shifting mechanism of engine transmission - Google Patents
Gear shifting mechanism of engine transmission Download PDFInfo
- Publication number
- CN101109439A CN101109439A CNA200710092658XA CN200710092658A CN101109439A CN 101109439 A CN101109439 A CN 101109439A CN A200710092658X A CNA200710092658X A CN A200710092658XA CN 200710092658 A CN200710092658 A CN 200710092658A CN 101109439 A CN101109439 A CN 101109439A
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- Prior art keywords
- tooth sector
- gear
- sector gear
- driven tooth
- gearshift
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- 230000005540 biological transmission Effects 0.000 title abstract description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a gear shifting mechanism of an engine transmission, wherein a driving sector gear is fixed on a gear shifting shaft, a driven sector gear is in clearance fit with a shaft of a speed changing hub and is in flexible connection with the speed changing hub through a torsion spring, the driven sector gear is meshed with the driving sector gear, a shifting fork is in clearance fit with a shifting fork shaft, one end of the shifting fork is in clearance fit with a cam groove arranged on the speed changing hub, the driven sector gear is a dovetail sector gear, two side edges of the dovetail part of the driven sector gear are respectively intersected with tooth profile involutes of edge teeth at the head end and the tail end of a gear part at any position between a reference circle and an addendum circle of the gear, and extension lines of the two side edges of the dovetail part extend and intersect towards the. According to the invention, through the driven sector gear which prevents the driving sector gear from excessively rotating, the meshing disengagement of the driving sector gear and the driven sector gear during gear shifting can be avoided, and the reliability of gear shifting is ensured.
Description
Technical field
The present invention relates to a kind of gearshift of Motor Vehicle, be specifically related to a kind of gearshift of motorcycle engine speed variator.
Background technique
At present, the gearshift of common motorcycle engine speed variator is made up of gearshift axle, active tooth sector, driven tooth sector, speed change hub, declutch shift shaft, shift fork etc.Initiatively tooth sector is fixedly connected on the gearshift axle, driven tooth sector Spielpassung is on the axle of speed change hub, flexibly connect by torsion spring and the formation of speed change hub, driven tooth sector is the dovetail tooth sector, this gear and initiatively tooth sector engagement, in the cam path on the declutch shift shaft on shift fork one end of the Spielpassung insertion speed change hub, the gear that the other end of shift fork is used to stir on the speed changer is done the axial displacement campaign, when external force control gearshift axle rotates, the gearshift axle is by the active tooth sector, driven tooth sector is given the speed change hub with transmission of power, driving the speed change hub rotates, the speed change hub drives shift fork and do the axial displacement campaign on declutch shift shaft, shift fork is stirred the gear change gear transferring power on the speed changer, realizes the variable block outputting power.But, because the dovetail portion dual-side of the driven tooth sector of the gearshift of existing engine speed changer meets at the root circle (seeing Fig. 1 and Fig. 2) of gear respectively with the flank profil involute of gear part head and the tail two ends heel teeth, because the dovetail portion dual-side of driven tooth sector meets at the root circle of gear respectively with the flank profil involute of gear part head and the tail two ends heel teeth, cause active tooth sector with its engagement when rotation angle is excessive, initiatively the heel teeth of tooth sector does not have spacing interference after turning over the heel teeth of driven tooth sector, can also be rotated further after making tooth sector initiatively step the heel teeth of driven tooth sector at heel teeth easily, cause the master, the engagement of driven tooth sector is thrown off, and causes the serious problems that gearshift was lost efficacy thus.In case the engagement of driving and driven tooth sector is thrown off, the gearshift of speed changer just can't be finished gearshift, must cause great trouble and burden to the user with keeping in repair behind the broken case of speed changer.
Summary of the invention
The objective of the invention is problem at above-mentioned prior art existence, a kind of gearshift of engine speed changer is provided, it has and prevents that initiatively tooth sector rotates excessive driven tooth sector, and the engagement of driving and driven tooth sector is thrown off in the time of can avoiding shifting gears, and guarantees the reliability of gearshift.
The object of the present invention is achieved like this: comprise gearshift axle, active tooth sector, speed change hub, driven tooth sector, declutch shift shaft, shift fork, initiatively tooth sector is fixed on the gearshift axle, driven tooth sector Spielpassung is on the axle of speed change hub, flexibly connect by torsion spring and the formation of speed change hub, driven tooth sector and initiatively tooth sector engagement, the shift fork Spielpassung is on declutch shift shaft, and a splaying of shift fork is engaged in the cam path that the speed change hub is provided with.Described driven tooth sector is the dovetail tooth sector, the dual-side of its dovetail portion respectively and the flank profil involute of gear part head and the tail two ends heel teeth meet at gear standard pitch circle to the arbitrary position between the top circle, the line stretcher of the dual-side of dovetail portion extends to the gear part direction and intersects.
It is 30 °～50 ° that the line stretcher of the dual-side of the dovetail portion of described driven tooth sector extends the angle α that intersects formation to the gear part direction.
Owing to adopted such scheme, driven tooth sector is the dovetail tooth sector, the dual-side of its dovetail portion respectively and the flank profil involute of gear part head and the tail two ends heel teeth meet at the standard pitch circle of gear to the arbitrary position between the top circle, when carrying out gear shift operation, initiatively tooth sector and driven tooth sector are in engagement process, initiatively the heel teeth of tooth sector is after turning over the heel teeth of driven tooth sector, initiatively the Topland of the heel teeth of tooth sector at the standard pitch circle of gear to contacting with driven tooth sector dovetail portion side between the top circle, make the heel teeth of driving gear be subjected to spacing interference, can not be rotated further, thereby stop main, driven gear is thrown off, and guarantees the reliability of gearshift.
It is 30 °～50 ° that the line stretcher of the dual-side of the dovetail portion of driven tooth sector extends the angle α that intersects formation to the gear part direction, if this angle α is greater than 50 °, the heel teeth that then makes the active tooth sector easily is after turning over the heel teeth of driven tooth sector, too early and driven gear forms spacing interference, and the continuity of shifting gears is impacted; If this angle α less than 30 °, then makes the heel teeth of active tooth sector easily after turning over the heel teeth of driven tooth sector, delay and driven gear form spacing, and the time of gearshift is delayed, and driving and driven gear return time lengthening.Therefore, angle α between 30 °～50 °, can make the gear teeth of tooth sector head end initiatively or tail end turn over the heel teeth of driven tooth sector after, its Topland contacts with the dovetail portion side of driven tooth sector, can form spacing interference rightly, when gearshift, not produce any influence.
When the present invention effectively prevents active tooth sector and the gearshift of driven tooth sector, lost efficacy because of excessively meshing to cause disengagement making and shift gears, and guaranteed the reliability of gearshift, having avoided simultaneously need be by breaking the trouble that case keeps in repair.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the schematic representation of active tooth sector of the prior art and the engagement of driven tooth sector;
Fig. 2 is the I portion enlarged view among Fig. 1;
Fig. 3 is the structural representation of the gearshift of engine speed changer of the present invention;
Fig. 4 is to sectional view along the A-A among Fig. 3;
Fig. 5 is the structural representation of the driven tooth sector among Fig. 3;
Active tooth sector when Fig. 6 changes forward gear for adopting the present invention and the schematic representation of driven tooth sector engagement;
Active tooth sector when Fig. 7 retreats retaining for adopting the present invention to change and the schematic representation of driven tooth sector engagement.
Fig. 8 is the another kind of embodiment of the driven tooth sector of the present invention.
In the accompanying drawing, 1 is the gearshift axle, and 2 is the active tooth sector, and 3 is lining, and 4 is driven tooth sector, and 4a is a side, and 5 is torsion spring, and 6 is the speed change hub, and 7 is shift fork, and 8 is the fork axle, and 9 is steel ball, and 10 is pressure spring, and 11 is bolt.
Embodiment
With reference to Fig. 3 to Fig. 5, the gearshift of engine speed changer of the present invention comprises gearshift axle, active tooth sector, speed change hub, driven tooth sector, fork axle, shift fork.Gearshift axle 1 one ends are installed in the crankcase, and the other end is used for being connected with the variable block treadle.Initiatively tooth sector 2 is fixed on the gearshift axle, and initiatively tooth sector 2 is weldingly fixed on the gearshift axle.Driven tooth sector Spielpassung is on the axle of speed change hub, flexibly connect by torsion spring and the formation of speed change hub, driven tooth sector 4 one end faces contact with the axial end of speed change hub 6, and driven tooth sector 4 is connected with an end of torsion spring 5, and torsion spring 5 the other ends insert in the hole of speed change hub 6 end faces setting.The lining 3 that is equipped with on torsion spring 5 and the speed change hub axle contacts, lining 3 and speed change hub 6 interference fit, and lining is used to guarantee the axial position of driven tooth sector 4.Driven tooth sector and initiatively tooth sector engagement, driven tooth sector 4 is the dovetail tooth sector, driven sector teeth number equates with the gear teeth number of active tooth sector 2.The dual-side 4a of the dovetail portion of driven tooth sector meets on the standard pitch circle of gear with the flank profil involute of gear part head and the tail two ends heel teeth respectively, forms limited part when being used for driving and driven gear engagement, to prevent the excessively engagement and throwing off of two gears.The line stretcher of the dual-side 4a of dovetail portion extends crossing to the gear part direction, the angle α that forms between the dual-side of the dovetail portion of driven tooth sector is 30 °～50 °, can reach limit effect preferably when this angle α is 40 ° among the present invention.Be respectively equipped with cam path and a plurality of gear locating slot on the side face of speed change hub 6.Shift fork 7 Spielpassung are on declutch shift shaft 8, and a splaying of shift fork 7 is engaged in the cam path that is provided with on the speed change hub, so that shift fork can be along the axial displacement of declutch shift shaft, the other end of shift fork is used to stir the power shift gear of speed changer major-minor axle.Gear locating slot among the present invention is divided into the gear locating slot that advances, neutral gear locating slot and retreats the gear locating slot, a screw 11 that is provided with blind hole is by being threaded on the crankcase body, be placed with a pressure spring 10 in the blind hole on this screw, steel ball 9 is pressed in the gear locating slot of speed change hub by the tension force of pressure spring 10.
With reference to Fig. 6, adopt the present invention to change forward gear, after right-hand heel teeth of active tooth sector turns over right-hand heel teeth of driven tooth sector, initiatively the Topland of the heel teeth of tooth sector contacts with driven tooth sector dovetail portion side, cause driving and driven gear to form spacing interference, throw off because of excessive engagement when avoiding driving and driven fan tooth to rotate forward gear.
With reference to Fig. 7, adopt the present invention to change and retreat retaining, after the heel teeth of active tooth sector left turns over the heel teeth of driven tooth sector left, initiatively the Topland of the heel teeth of tooth sector contacts with driven tooth sector dovetail portion side, cause driving and driven gear to form spacing interference, throw off because of excessive engagement when avoiding driving and driven fan tooth to retreat by turns grade.
The present invention not only is confined to the foregoing description, the dual-side 4a of the dovetail portion of described driven tooth sector also can meet on the standard pitch circle of gear (as shown in Figure 8) with the flank profil involute of gear part head and the tail two ends heel teeth respectively, perhaps the dual-side of the dovetail portion of described driven tooth sector respectively and the flank profil involute of gear part head and the tail two ends heel teeth meet at the standard pitch circle of gear to the arbitrary position between the top circle, the intersection point that the flank profil involute of the dual-side of dovetail portion and gear part heel teeth intersects, distance apart from the gear center of circle equates, all can realize spacing to the driving gear heel teeth, be rotated further and produce the phenomenon that gear engagement breaks away from limiting gear.
Claims (3)
1. the gearshift of an engine speed changer, comprise the gearshift axle, the active tooth sector, the speed change hub, driven tooth sector, declutch shift shaft, shift fork, initiatively tooth sector is fixed on the gearshift axle, driven tooth sector Spielpassung is on the axle of speed change hub, flexibly connect by torsion spring and the formation of speed change hub, driven tooth sector and initiatively tooth sector engagement, the shift fork Spielpassung is on declutch shift shaft, one splaying of shift fork is engaged in the cam path that the speed change hub is provided with, it is characterized in that: described driven tooth sector is the dovetail tooth sector, the dual-side of its dovetail portion respectively and the flank profil involute of gear part head and the tail two ends heel teeth meet at gear standard pitch circle to the arbitrary position between the top circle, the line stretcher of the dual-side of dovetail portion extends to the gear part direction and intersects.
2. the gearshift of engine speed changer according to claim 1 is characterized in that: the line stretcher of the dual-side of the dovetail portion of described driven tooth sector extends to the gear part direction that to intersect the angle α that forms be 30 °～50 °.
3. the gearshift of engine speed changer according to claim 1 and 2 is characterized in that: the dual-side of the dovetail portion of described driven tooth sector, the intersection point that intersects with the flank profil involute of gear part heel teeth equates apart from the distance in the gear center of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710092658XA CN100516597C (en) | 2007-09-03 | 2007-09-03 | Gear shifting mechanism of engine transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710092658XA CN100516597C (en) | 2007-09-03 | 2007-09-03 | Gear shifting mechanism of engine transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101109439A true CN101109439A (en) | 2008-01-23 |
| CN100516597C CN100516597C (en) | 2009-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710092658XA Expired - Fee Related CN100516597C (en) | 2007-09-03 | 2007-09-03 | Gear shifting mechanism of engine transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100516597C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062395A (en) * | 2013-01-09 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Gear shifting mechanism of manual transmission |
| CN106049236A (en) * | 2016-07-20 | 2016-10-26 | 徐工集团工程机械股份有限公司道路机械分公司 | Manipulating device for road roller |
| CN111637219A (en) * | 2020-06-16 | 2020-09-08 | 蜂巢传动科技河北有限公司 | Actuator of transfer case |
| CN113586697A (en) * | 2020-04-30 | 2021-11-02 | 蜂巢传动科技河北有限公司 | Torque manager |
| WO2023155479A1 (en) * | 2022-02-17 | 2023-08-24 | 中车株洲电力机车有限公司 | Power switching system of rack rail vehicle, power switching method and railway vehicle |
| WO2024045409A1 (en) * | 2022-08-31 | 2024-03-07 | 浙江春风动力股份有限公司 | Engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2383758Y (en) * | 1998-04-20 | 2000-06-21 | 许秀忠 | Electric speed variator for motorcycle |
| JP2001352808A (en) * | 2000-06-12 | 2001-12-25 | Yanmar Agricult Equip Co Ltd | Vegetable transplanter |
| CN2481559Y (en) * | 2001-05-15 | 2002-03-13 | 重庆力帆轰达实业(集团)有限公司 | Engine gearshift for motorcycle |
| JP2005273818A (en) * | 2004-03-25 | 2005-10-06 | Atsumi Tec:Kk | Operating device for automatic transmission for vehicle |
-
2007
- 2007-09-03 CN CNB200710092658XA patent/CN100516597C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062395A (en) * | 2013-01-09 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Gear shifting mechanism of manual transmission |
| CN103062395B (en) * | 2013-01-09 | 2015-08-05 | 浙江吉利汽车研究院有限公司杭州分公司 | A kind of manual transmission gearshift |
| CN106049236A (en) * | 2016-07-20 | 2016-10-26 | 徐工集团工程机械股份有限公司道路机械分公司 | Manipulating device for road roller |
| CN113586697A (en) * | 2020-04-30 | 2021-11-02 | 蜂巢传动科技河北有限公司 | Torque manager |
| CN113586697B (en) * | 2020-04-30 | 2023-02-24 | 蜂巢传动科技河北有限公司 | Torque manager |
| CN111637219A (en) * | 2020-06-16 | 2020-09-08 | 蜂巢传动科技河北有限公司 | Actuator of transfer case |
| CN111637219B (en) * | 2020-06-16 | 2021-12-28 | 蜂巢传动科技河北有限公司 | Actuator of transfer case |
| WO2023155479A1 (en) * | 2022-02-17 | 2023-08-24 | 中车株洲电力机车有限公司 | Power switching system of rack rail vehicle, power switching method and railway vehicle |
| WO2024045409A1 (en) * | 2022-08-31 | 2024-03-07 | 浙江春风动力股份有限公司 | Engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100516597C (en) | 2009-07-22 |
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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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: No. 99 Chongqing Jiulongpo Hualong Avenue Kowloon Park Patentee after: Loncin Industry Co., Ltd. Address before: LONCIN Industrial Park, Baihe Industrial Zone, Chongqing economic and Technological Development Zone Patentee before: Loncin Industry Co., Ltd. |
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| C56 | Change in the name or address of the patentee |
Owner name: LONCIN LONCIN GENERAL DYNAMICS CO., LTD. Free format text: FORMER NAME: LONCIN INDUSTRY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 99 No. 400052 Chongqing Jiulongpo Hualong Avenue Kowloon Park Patentee after: Loncin General Dynamics Co., Ltd. Address before: 99 No. 400052 Chongqing Jiulongpo Hualong Avenue Kowloon Park Patentee before: Loncin Industry Co., Ltd. |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chongqing Longxin Engine Ltd. Assignor: Loncin General Dynamics Co., Ltd. Contract record no.: 2012500000044 Denomination of invention: Gear shift mechanism of engine speed changer Granted publication date: 20090722 License type: Exclusive License Open date: 20080123 Record date: 20120508 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20080123 Assignee: Chongqing Longxin Engine Ltd. Assignor: Loncin General Dynamics Co., Ltd. Contract record no.: 2012500000044 Denomination of invention: Gear shift mechanism of engine speed changer Granted publication date: 20090722 License type: Exclusive License Record date: 20120508 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20200903 |
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| CF01 | Termination of patent right due to non-payment of annual fee |