CN2806895Y - Motorcycle engine gearshift mechanism - Google Patents
Motorcycle engine gearshift mechanism Download PDFInfo
- Publication number
- CN2806895Y CN2806895Y CN 200520060428 CN200520060428U CN2806895Y CN 2806895 Y CN2806895 Y CN 2806895Y CN 200520060428 CN200520060428 CN 200520060428 CN 200520060428 U CN200520060428 U CN 200520060428U CN 2806895 Y CN2806895 Y CN 2806895Y
- Authority
- CN
- China
- Prior art keywords
- shifting fork
- cam
- shifting
- shift
- utility
- 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.)
- Expired - Fee Related
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Classifications
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- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
- F16H2063/322—Gear shift yokes, e.g. shift forks characterised by catches or notches for moving the fork
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- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/08—Multiple final output mechanisms being moved by a single common final actuating mechanism
- F16H63/16—Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism
- F16H63/18—Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism the final actuating mechanism comprising cams
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model relates to a gearshift mechanism of a motorcycle engine, which comprises a shifting fork and a shifting cam, wherein the head of the shifting fork is provided with a shifting fork pin which protrudes and extends into a curved slot of the shifting cam. The utility model is characterized in that the shifting fork pin of the head of the shifting fork is provided with a needle bearing. The contact circular arc of the groove face of the shifting cam is enlarged because the shifting fork pin of the head of the shifting fork is provided with the needle bearing, that is, the original size is changed to R5 from R3.5, and the climbing angle of the shifting fork is decreased. Simultaneously, the sliding friction between the shifting fork and the cam is changed to rolling friction, so the running resistance of the shifting fork in the cam slot of the shifting cam is reduced. The gearshift of the entire motorcycle becomes easier, more comfortable and more reliable; simultaneously, the service life of the gearshift mechanism is prolonged. The utility model has the advantages of simplicity, practicality, popularization value and practical value.
Description
Technical field
The utility model relates to a kind of motorcycle engine gear mechanism.
Background technique
Travel under different road conditions, the different speed of a motor vehicle and can both reach the purpose of optimum performance of performance motorcycle engine in order to satisfy motorcycle, motor needs speed change usually, and speed change has dual mode, i.e. stepless speed changing mechanism and step change mechanism.Stepless speed changing mechanism is simple to operate, and is easy to use, but oil consumption and power performance are not ideal enough.Though and have a grade gear gear vehicle to increase gear mechanism, manipulate complicated, but power performance and fuel consume performance are than superior many of stepless speed changing mechanism, so the present motorcycle that uses, especially in, the motorcycle of big discharge capacity all adopts grade gear gear so that reach the vehicle speed of using under the different conditions.For example: CG125 vehicle, the employed motor of this car have fourth gear machine, five grades of machines, six grades of machines, and the shift mode has the branch of circulation shelves, international shelves again.Gear mechanism generally all adopts shift fork shift mode, and its structure comprises parts such as shift fork, shift cam, gear axle and gear pedal; And the shift fork head has shifting fork pin outstanding and put in the curvilinear groove of shift cam, and curvilinear groove drives shifting fork pin and moves also shift fork and move axially and stir the speed change gear speed change when rotating the shift cam.Because shifting fork pin and curvilinear groove are sliding friction, and the diameter of shifting fork pin is less, in long-term use practice, this gear mechanism exists that shift cam frictional resistance is big, phenomenons such as clamping stagnation and gear have some setbacks, gear difficulty are arranged in the gear process, and these phenomenons often occur.Sometimes cam and shift fork premature wear also can occur, generation can not gear and the fault of gear difficulty.
The model utility content
The purpose of this utility model just provides a kind of motorcycle engine gear mechanism, and its surface friction drag is little, gear is easily smooth and easy reliable.
For achieving the above object, motorcycle engine gear of the present utility model mechanism comprises shift fork and shift cam, and the shift fork head has shifting fork pin outstanding and put in the curvilinear groove of shift cam, and it is characterized in that: described shift fork head shifting fork pin is equipped with needle bearing.
Described needle bearing external diameter is 10 millimeters.
The beneficial effects of the utility model are: because shift fork head shifting fork pin is equipped with needle bearing, increased the circular arc that contacts with shift cam groove face, promptly life size R3.5 is become R5, reduced the shift fork ramp angle, change the sliding friction between shifting fork pin and the cam into rolling friction simultaneously, so reduced the resistance that shifting fork pin is moved in the shift cam path.Overcome grade speed change of speaking of previously that has and become the deficiency of mechanism, made the car load gear lighter, more comfortable, more reliable, also prolonged the working life of gear mechanism simultaneously, simple and practical, have and promote and use value.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is the structure cross-sectional schematic of former motorcycle engine gear mechanism.
Fig. 2 is the shift shift fork structural representation of former gear mechanism.
Fig. 3 is the cross-sectional schematic along Fig. 2.
Fig. 4 is the utility model embodiment's a structure cross-sectional schematic.
Fig. 5 is the shift shift fork structural representation of this novel gear mechanism.
Fig. 6 is that cross-sectional schematic is amplified in the part of Fig. 5.
Among the figure: 1 shift fork, 2 shift cams, 3 shifting fork pin, 4 curvilinear grooves, 5 needle bearings.
Embodiment
As shown in Figure 1 to Figure 3, the gear mechanism of former motorcycle engine, comprise three shift forks in left, center, right and the shift cam that are contained on the declutch shift shaft, the shift fork head has the shifting fork pin of R3.5 outstanding and put in the wide 7 millimeters curvilinear groove of shift cam, when rotating the shift cam curvilinear groove drive shifting fork pin also shift fork move axially and stir the speed change gear speed change.
Fig. 4 is to the utility model embodiment's shown in Figure 6 motorcycle engine gear mechanism, comprise three shift forks in left, center, right and the shift cam that are contained on the declutch shift shaft, the shift fork head has shifting fork pin, needle bearing BK0607 is housed on this pin, described needle bearing external diameter is 10 millimeters, outstanding and put in the wide 10 millimeters curvilinear groove of shift cam, same, when rotating the shift cam curvilinear groove drive shifting fork pin also shift fork move axially and stir the speed change gear speed change.
Claims (2)
1, a kind of motorcycle engine gear mechanism comprises shift fork (1) and shift cam (2), and the shift fork head has shifting fork pin (3) outstanding and put in the curvilinear groove (4) of shift cam, and it is characterized in that: described shift fork head shifting fork pin is equipped with needle bearing (5).
2, motorcycle engine gear according to claim 1 mechanism, it is characterized in that: the curvilinear groove of described shift cam (4) is wide 10 millimeters, and described needle bearing is the BK0607 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060428 CN2806895Y (en) | 2005-06-28 | 2005-06-28 | Motorcycle engine gearshift mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060428 CN2806895Y (en) | 2005-06-28 | 2005-06-28 | Motorcycle engine gearshift mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2806895Y true CN2806895Y (en) | 2006-08-16 |
Family
ID=36921194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520060428 Expired - Fee Related CN2806895Y (en) | 2005-06-28 | 2005-06-28 | Motorcycle engine gearshift mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2806895Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287527A (en) * | 2011-07-26 | 2011-12-21 | 浙江吉利汽车研究院有限公司 | Transmission shift mechanism |
| CN102853070A (en) * | 2012-08-28 | 2013-01-02 | 丹阳市富豪机械制造有限公司 | Gear box shifting fork |
| 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 |
| CN103403405A (en) * | 2011-03-01 | 2013-11-20 | 铃木株式会社 | Transmission for automatic two-wheeled vehicle |
| CN104048040A (en) * | 2013-03-16 | 2014-09-17 | 江苏普盛动力股份有限公司 | Embedded shifting mechanism for outboard motor |
| CN111173925A (en) * | 2020-01-22 | 2020-05-19 | 凯博易控车辆科技(苏州)股份有限公司 | Gear shifting mechanism and gear shifting method of transmission and vehicle |
-
2005
- 2005-06-28 CN CN 200520060428 patent/CN2806895Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103403405A (en) * | 2011-03-01 | 2013-11-20 | 铃木株式会社 | Transmission for automatic two-wheeled vehicle |
| CN103403405B (en) * | 2011-03-01 | 2016-09-14 | 铃木株式会社 | The variable-speed motor of motorcycle |
| CN102287527A (en) * | 2011-07-26 | 2011-12-21 | 浙江吉利汽车研究院有限公司 | Transmission shift mechanism |
| CN102853070A (en) * | 2012-08-28 | 2013-01-02 | 丹阳市富豪机械制造有限公司 | Gear box shifting fork |
| 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 |
| CN104048040A (en) * | 2013-03-16 | 2014-09-17 | 江苏普盛动力股份有限公司 | Embedded shifting mechanism for outboard motor |
| CN111173925A (en) * | 2020-01-22 | 2020-05-19 | 凯博易控车辆科技(苏州)股份有限公司 | Gear shifting mechanism and gear shifting method of transmission and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060816 Termination date: 20140628 |
|
| EXPY | Termination of patent right or utility model |