CN216762062U - Transmission mechanism for motorcycle - Google Patents
Transmission mechanism for motorcycle Download PDFInfo
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- CN216762062U CN216762062U CN202220605601.5U CN202220605601U CN216762062U CN 216762062 U CN216762062 U CN 216762062U CN 202220605601 U CN202220605601 U CN 202220605601U CN 216762062 U CN216762062 U CN 216762062U
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- transmission
- rocker arm
- shaft
- transmission shaft
- rear rocker
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 111
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 230000035939 shock Effects 0.000 claims description 7
- 239000000725 suspension Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
The utility model discloses a transmission mechanism for a motorcycle, which does not need to be tensioned and adjusted, has good sealing property and is easy to maintain. Be equipped with the transmission shaft between motor, the back transmission box, the both ends of transmission shaft all are equipped with transmission shaft universal joint combination, the transmission shaft universal joint combination at transmission shaft both ends respectively with motor output shaft, back transmission box main drive gear axle spline fit, axial positioning between motor output shaft and the transmission shaft universal joint combination that corresponds, leave the space that supplies back transmission box main drive gear axle axial to slide between back transmission box main drive gear axle and the transmission shaft universal joint combination that corresponds.
Description
Technical Field
The utility model relates to the technical field of motorcycles, in particular to a transmission mechanism for a motorcycle.
Background
At present, the transmission modes of the electric motorcycle mainly comprise chain wheel transmission and belt transmission, and a rear wheel fork adopts a bilateral symmetry structure of a common motorcycle. After a traditional vehicle is used for a long time, a chain or a belt is easy to lengthen, a rear wheel chain or a belt tensioning mechanism needs to be adjusted, otherwise, abnormal sound is easy to generate in the riding process, and even the transmission efficiency is reduced; when the chain wheel is used in a severe environment, silt and the like are easily mixed, and the abrasion of the chain wheel and the chain is increased; in the maintenance process, the rear wheel is inconvenient to disassemble.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides a transmission mechanism for a motorcycle, which does not need tensioning adjustment, has good sealing performance and is easy to maintain.
The purpose of the utility model is realized by the following steps:
a transmission mechanism for a motorcycle comprises a motor and a rear transmission box body, wherein a transmission shaft is arranged between the motor and the rear transmission box body, transmission shaft universal joint combinations are arranged at two ends of the transmission shaft, the transmission shaft universal joint combinations at the two ends of the transmission shaft are respectively in spline fit with a motor output shaft and a rear transmission box body main driving gear shaft, the motor output shaft and the corresponding transmission shaft universal joint combinations are axially positioned, and a space for axial sliding of the rear transmission box body main driving gear shaft is reserved between the rear transmission box body main driving gear shaft and the corresponding transmission shaft universal joint combination.
Preferably, a rear rocker arm is arranged between the motor and the rear transmission box body, the rear rocker arm covers the transmission shaft, the rear end of the rear rocker arm is fixedly connected with the rear transmission box body, the front end of the rear rocker arm is hinged with the frame through a rear arm shaft, and the rear rocker arm and the motor output shaft are sealed through a corrugated pipe.
Preferably, the rear end of the rear rocker arm is provided with an upper boss support lug and a lower boss support lug, the front end of the rear transmission box body is correspondingly provided with an upper U-shaped support lug and a lower U-shaped support lug, the upper boss support lug and the lower boss support lug of the rear rocker arm are respectively embedded into the upper U-shaped support lug and the lower U-shaped support lug of the rear transmission box body and are connected and fastened through bolts and nuts, and the rear transmission box body and the rear rocker arm are positioned through steps and sealed through O-shaped rings.
Preferably, the tapered roller bearing and the oil seal are respectively pressed at two ends of a hinge hole of the rear rocker arm; the rear arm shaft is matched with the oil seal through a bushing, and an O-shaped ring is arranged between the bushing and the rear arm shaft to form sealing.
Preferably, the two ends of the hinge hole of the rear rocker arm are respectively press-fitted with a needle bearing, a retainer ring and an oil seal, the middle part of the rear rocker arm is sleeved with a bushing, the two ends of the rear rocker arm are sleeved with positioning bushings, and the positioning bushings are matched with the needle bearing, the retainer ring and the oil seal to form sealing.
Preferably, the rear rocker arm is provided with a lug for being hinged with the rear shock absorber.
Preferably, the universal joints of the transmission shaft at the two ends of the transmission shaft are connected with the output shaft of the motor and the external spline of the driving gear shaft of the rear transmission box body through internal splines.
Preferably, a retainer ring is fixed at the end part of the output shaft of the motor to form axial positioning for the transmission shaft.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
1. the shaft transmission mode is adopted, the shaft transmission is carried out by a spline pair, tensioning adjustment is not needed, and the spline pair has low transmission noise and small abrasion;
2. the transmission shaft is arranged in the rear wheel fork and is totally closed, so that silt is prevented from entering the transmission shaft, and the working environment of the transmission shaft can be effectively solved;
3. the single-side independent suspension rear wheel fork is adopted, the rear wheel is convenient to disassemble, and the maintenance is simple.
4. The rear wheel fork is connected with the rear transmission box body through the upper screw and the lower screw, so that the appearance is more attractive.
Based on the four points, the utility model greatly improves the core competitiveness of the vehicle market
Drawings
FIG. 1 is a schematic view of a shaft drive configuration;
FIG. 2 is a schematic view of an independent suspension structure;
FIG. 3 is a schematic view of a connection structure of a rear rocker arm and a rear transmission case;
FIG. 4 is a schematic view of a connection structure of a rear rocker arm and a vehicle frame in the first embodiment;
FIG. 5 is a schematic view of a second embodiment of a rear swing arm to frame connection;
fig. 6 is a schematic diagram of the rear rocker arm system.
Reference numerals
In the attached drawings, 1-a rear transmission case; 2-a transmission shaft; 3, a universal joint combination of a transmission shaft; 4-a motor; 5-motor output shaft; 6. 23-a retainer ring; 7-a transmission shaft spline housing; 8-the rear transmission box main drive gear shaft; 9-rear rocker arm; 10-rear shock absorber; 11-shock absorber mounting lugs; 12-a rear rocker arm mounting plate of the frame; 13-a bolt; 14. 15-a nut; 16-a frame; 17-rear arm shaft; 18-tapered roller bearings; 19-oil sealing; 20-a first bushing; 21. 28-O-shaped ring; 22-a second bushing; 24-needle bearings; 25-positioning the bushing; 27-bellows.
Detailed Description
Referring to fig. 1-6, an embodiment of a transmission mechanism for a motorcycle applied to a motorcycle includes a shaft transmission portion, an independent suspension portion.
1. Shaft transmission part
As shown in figure 1, the shaft transmission part mainly comprises a transmission shaft 2, a rear transmission case 1 and a motor 4.
The specific installation relationship is as follows:
as shown in fig. 1, an internal spline of a transmission shaft universal joint combination 3 is connected with an external spline of a motor output shaft 5, and an internal spline of a transmission shaft spline sleeve 7 is connected with an external spline of a rear transmission case body main drive gear shaft 8; after the transmission shaft 2 is arranged on an external spline of the motor output shaft 5, the transmission shaft is fixed on the motor output shaft 5 by the retainer ring 6, so that the transmission shaft 2 is prevented from moving in the axial direction in the rotating process.
The working principle is as follows:
the motor 4 outputs rotation torque through the transmission shaft 2 and transmits the rotation torque to the rear transmission box body 1. The rear transmission case 1 transmits the torque to the rear wheel through the gear pair, thereby realizing rear wheel drive.
2. Independent suspension section
As shown in fig. 2, the independent suspension part mainly comprises five parts, namely a rear transmission case 1, a rear rocker arm 9, a rear shock absorber 10, a motor 4, a frame 16 and the like.
The specific installation relationship is as follows:
assembling the rear transmission case 1 and the rear rocker arm 9, as shown in fig. 3, respectively embedding upper and lower boss lugs of the rear rocker arm 9 into upper and lower U-shaped lugs of the rear transmission case 1, and connecting and fastening the lugs by using bolts 13 and nuts 14; the installation clearance between the upper boss lug and the lower boss lug of the rear rocker arm 9 and the end face of the upper U-shaped lug and the lower U-shaped lug of the rear transmission box body 1 is 0.5mm, so that the assembly is convenient, after the bolt and the nut are fastened, the end face of the bolt boss is in contact with the end faces of the upper boss lug and the lower boss lug of the rear rocker arm 9, the assembly clearance of the rear rocker arm 9 in the axial direction of the bolt is automatically eliminated, and the use requirement is met.
Assembling the rear rocker arm 9 and the frame 16, as shown in fig. 4, respectively press-fitting a tapered roller bearing 18 and an oil seal 19 at two ends of the rear rocker arm 9; installing the O-ring 21 in the first bush 20; then, parts such as a second bush 22, a first bush 20 provided with an O-shaped ring 21, a rear rocker arm 9 and the like are respectively arranged in a large hole from a mounting hole at the right end of the frame 16 by using the rear arm shaft 17 and are fastened by using a nut 15; for the convenience of assembly, the clearance between the frame 16 and the rear rocker arm 9 with bearings and bushings at two ends is 2mm, after the rear arm shaft 17 is fastened with a nut, the rear arm shaft 17 automatically eliminates the axial clearance of the rear rocker arm 9 on the rear arm shaft 17 through the second bushing 22, the rear rocker arm 9 is prevented from moving in the axial direction, meanwhile, the requirement that the rear rocker arm 9 can freely rotate flexibly is met, and in order to meet the requirement of the bearing use environment, the oil seals 19 and the O-shaped rings 21 which are arranged at two ends of the rear rocker arm 9 play a role in sealing and dust prevention.
As shown in fig. 2, the rear suspension system is assembled by mounting one end of the rear shock absorber 10 on the frame rear rocker mounting plate 12 and the other end on the frame shock absorber mounting lug 11.
As shown in fig. 6, in the process of assembling the rear rocker arm 9 and the rear transmission case 1, an O-ring 28 is assembled between the boss of the rear transmission case 1 and the boss of the rear rocker arm 9, and a bellows 27 is assembled between the rear rocker arm 9 and the motor 4, so that the suspension system is realized to prevent substances such as silt from entering the interior and influencing the service life of the oil seal 19.
In the running process of a vehicle, under the action of shock absorption, a rear wheel fork (consisting of a rear rocker arm 9 and a rear transmission box body 1) rotates around a rear arm shaft 17, and meanwhile, a transmission shaft 2 rotates around a universal joint rotating shaft of the transmission shaft 2, so that when the rear rocker arm 9 rotates, the transmission shaft 2 also rotates simultaneously, and the rotating shaft is arranged inside the rear rocker arm 9, so that the sealing cleanliness of the motor 4 and the rear transmission box body 1 is ensured, and the integral shape of a rear suspension system is not influenced.
The utility model is not limited to the above-mentioned embodiment, referring to fig. 5, the assembly of the rear rocker arm 9 and the frame can also adopt a needle bearing 24, the structure of the needle bearing 24 is more compact, as shown in fig. 5, the needle bearing 24, the retainer ring 23, the oil seal 19 and the positioning bush 25 are respectively pressed on two ends of the rear rocker arm 9; fitting the first bushing 20 in the middle of the rear rocker arm 9; then, a rear arm shaft 17 is used for respectively installing a second bushing 22 from a mounting hole at the right end of the frame to be a large hole, and the second bushing is fastened by a nut 15; for the convenience of assembly, the clearance between the frame and the rear rocker arm 9 with bearings and bushings at two ends is 2mm, after the rear arm shaft 17 is fastened with a nut, the rear arm shaft 17 automatically eliminates the axial clearance of the rear rocker arm 9 on the rear arm shaft 17 through the second bushing 22, and the rear rocker arm 9 is prevented from moving in the axial direction.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the utility model, and that, although the utility model has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (8)
1. The utility model provides a drive mechanism for motorcycle, includes motor, back transmission case, its characterized in that: be equipped with the transmission shaft between motor, the back transmission box, the both ends of transmission shaft all are equipped with transmission shaft universal joint combination, the transmission shaft universal joint combination at transmission shaft both ends respectively with motor output shaft, back transmission box main drive gear axle spline fit, axial positioning between motor output shaft and the transmission shaft universal joint combination that corresponds, leave the space that supplies back transmission box main drive gear axle axial to slide between back transmission box main drive gear axle and the transmission shaft universal joint combination that corresponds.
2. A transmission mechanism for a motorcycle according to claim 1, wherein: the rear rocker arm is arranged between the motor and the rear transmission box body, the rear rocker arm covers the transmission shaft, the rear end of the rear rocker arm is fixedly connected with the rear transmission box body, the front end of the rear rocker arm is hinged with the frame through a rear arm shaft, and the rear rocker arm and the motor output shaft are sealed through a corrugated pipe.
3. A transmission mechanism for a motorcycle according to claim 2, wherein: the rear rocker arm is provided with an upper boss support lug and a lower boss support lug at the rear end, an upper U-shaped support lug and a lower U-shaped support lug are correspondingly arranged at the front end of the rear transmission box body, the upper boss support lug and the lower boss support lug of the rear rocker arm are respectively embedded into the upper U-shaped support lug and the lower U-shaped support lug of the rear transmission box body and are connected and fastened through bolts and nuts, and the rear transmission box body and the rear rocker arm are positioned through steps and sealed through O-shaped rings.
4. A transmission mechanism for a motorcycle according to claim 2, wherein: two ends of a hinge hole of the rear rocker arm are respectively pressed with a tapered roller bearing and an oil seal; the rear arm shaft is matched with the oil seal through a bushing, and an O-shaped ring is arranged between the bushing and the rear arm shaft to form sealing.
5. A transmission mechanism for a motorcycle according to claim 2, wherein: the two ends of a hinge hole of the rear rocker arm are respectively press-fitted with a needle bearing, a retainer ring and an oil seal, the middle part of the rear rocker arm is sleeved with a bushing, the two ends of the rear rocker arm are sleeved with positioning bushings, and the positioning bushings are matched with the needle bearing, the retainer ring and the oil seal to form sealing.
6. A transmission mechanism for a motorcycle according to claim 2, wherein: and the rear rocker arm is provided with a support lug which is used for being hinged with the rear shock absorber.
7. A transmission mechanism for a motorcycle according to claim 1, wherein: and the universal joints of the transmission shafts at the two ends of the transmission shaft are connected with the output shaft of the motor and the outer spline of the driving gear shaft of the rear transmission box body through inner splines.
8. A transmission mechanism for a motorcycle according to claim 7, wherein: and a retainer ring is fixed at the end part of the output shaft of the motor to axially position the transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220605601.5U CN216762062U (en) | 2022-03-18 | 2022-03-18 | Transmission mechanism for motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220605601.5U CN216762062U (en) | 2022-03-18 | 2022-03-18 | Transmission mechanism for motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216762062U true CN216762062U (en) | 2022-06-17 |
Family
ID=81959988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220605601.5U Active CN216762062U (en) | 2022-03-18 | 2022-03-18 | Transmission mechanism for motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216762062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114560036A (en) * | 2022-03-18 | 2022-05-31 | 香港鸿达智能科技有限公司 | Suspension system for motorcycle |
-
2022
- 2022-03-18 CN CN202220605601.5U patent/CN216762062U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114560036A (en) * | 2022-03-18 | 2022-05-31 | 香港鸿达智能科技有限公司 | Suspension system for motorcycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240911 Address after: Building 1, 2nd Floor, No. 9 Xinqin Road, Hongshan Street, Xinwu District, Wuxi City, Jiangsu Province, China 214142 Patentee after: Wuxi Dianyu Xingtu Technology Co.,Ltd. Country or region after: China Address before: Room 1003, 10th Floor, Building 2, New Harbour City, 30 Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong, China Patentee before: Hong Kong Hongda Intelligent Technology Co.,Ltd. Country or region before: Hong-Kong |