CN209938841U - Rear bottom fork device of electric vehicle - Google Patents
Rear bottom fork device of electric vehicle Download PDFInfo
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- CN209938841U CN209938841U CN201920598685.2U CN201920598685U CN209938841U CN 209938841 U CN209938841 U CN 209938841U CN 201920598685 U CN201920598685 U CN 201920598685U CN 209938841 U CN209938841 U CN 209938841U
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Abstract
The utility model discloses a chain stay device behind electric motor car has solved current electric motor car transportation inconvenience, and the relatively poor problem of manpower actuating mechanism job stabilization nature on the electric motor car solves the technical measure that this technical problem taken: the rear bottom fork device of the electric vehicle comprises a first longitudinal rod and a second longitudinal rod which are arranged in parallel, wherein a wheel shaft of a rear wheel is connected with the rear end parts of the two longitudinal rods.
Description
Technical Field
The utility model relates to an electric motor car especially relates to rear bottom fork device of electric motor car.
Background
The electric vehicle is a simple tool for riding instead of walk, and has been deeply inserted into the lives of ordinary people in society. The most of the power that moves ahead of current electric motor car is provided by storage battery, motor, and some electric motor cars often need to set up pedal mechanism to assist the manpower to drive the electric motor car to move ahead under the condition that the electric motor car lacks electricity. The main structure of the electric vehicle comprises a frame, a rear bottom fork and a front fork, wherein the rear bottom fork is connected with a rear wheel, and the front fork is connected with a front wheel.
The Chinese utility model patent (CN 208264480U) discloses a rear bottom fork device of an electric vehicle, which comprises a right rear bottom fork, a connecting bridge and a left rear bottom fork; the right rear bottom fork comprises a motor shaft position and is used for mounting the motor shaft, a shock absorption mounting hole, a switching code mounting position and a positioning piece mounting position are arranged on the edge of the motor shaft position, the connecting bridge mounting hole is vertically and oppositely arranged and is located on the middle side of the right rear bottom fork, and the front fork mounting hole is located on the other side of the right rear bottom fork relative to the motor shaft position. The utility model has the advantages of simple and reasonable structure, adopt H type structural design, through the aluminum product forging shaping production technique, easily processing producer produces, can effectively alleviate the holistic weight of back chain stay, increases the intensity of back chain stay, has improved the life of back chain stay.
The rear fork device is just a mounting structure of the electric vehicle, and is connected to the frame through a coupling shaft. A chain wheel in the manual driving mechanism is arranged on a frame, a flywheel is arranged on a rear wheel axle of the electric vehicle, the rear wheel axle is connected to the rear end part of a rear bottom fork, and the chain wheel and the flywheel are in transmission connection through a chain. When the electric vehicle moves forward, the front end of the rear bottom fork rotates around a coupling shaft connected with the vehicle frame due to the jolt of the road surface, so that the central point between the chain wheel and the flywheel is changed frequently, the tension degree of the chain is changed, and the electric vehicle is inconvenient to drive manually to move forward. In addition, the rear bottom fork device is also produced independently, the rear bottom fork is assembled on the electric vehicle in a whole vehicle factory and then the electric vehicle is delivered integrally, the electric vehicle is not suitable for the modularized production of the electric vehicle, and the space occupied by the transportation of the electric vehicle is relatively large.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who needs the solution: the rear bottom fork device of the electric vehicle can provide a motor mounting platform and effectively meets the modular production requirement of the electric vehicle.
For solving the technical problem, the technical scheme of the utility model: the rear bottom fork device of the electric vehicle comprises a first longitudinal rod and a second longitudinal rod which are arranged in parallel, wherein a wheel shaft of a rear wheel is connected with the rear end parts of the two longitudinal rods.
The two longitudinal rods are equivalent to a left bottom fork and a right bottom fork in a common rear bottom fork, the rear ends of the two longitudinal rods are connected together through a wheel shaft, the wheel shaft penetrates through a motor in the middle of a rear wheel, and the front ends of the two longitudinal rods are connected together, so that the two longitudinal rods and the rear wheel exist as an integral device. The integrated unit is coupled to the frame, and the frame itself forms a flexure that is compatible with the integrated unit for assembly. The front end of the longitudinal rod is the end which is assembled on the electric vehicle and points to the electric vehicle faucet, and the rear end of the longitudinal rod is connected with the rear wheel.
Furthermore, the front end sides of the two longitudinal rods are connected together through a rotating shaft, two ends of the rotating shaft respectively extend out of the outer sides of the two longitudinal rods, a toothed disc is connected to the rotating shaft, a flywheel is connected to a wheel shaft, and the toothed disc is connected with the flywheel through a chain. Because the longitudinal rod and the rear wheel axle form a whole, the flywheel and the chain wheel are assembled on the whole device, the size of the whole device and the relative space position between the internal structures can not be changed in the driving process, and the center distance between the flywheel and the chain wheel can be kept stable, so that the electric vehicle can be conveniently driven by manpower.
Further, the chain wheel and the flywheel are both positioned between the two longitudinal rods. The structure of the manual driving mechanism on the electric vehicle is compact, and the safety of the manual driving mechanism in the working process is high.
Furthermore, the chain wheel and the flywheel are deviated from the first longitudinal rod, a sleeve extending to the chain wheel is arranged on the front end side of the second longitudinal rod, and the sleeve is sleeved on the periphery of the rotating shaft. The sleeve can increase the connection stability at the front ends of the two longitudinal rods on one hand, and can effectively position the crankset on the other hand.
Furthermore, a cylindrical sleeve is arranged at the front end of the first longitudinal rod, and the rotating shaft is connected in the sleeve in a penetrating mode. The sleeve is arranged, so that the first longitudinal rod is conveniently connected with the transmission shaft, and the purpose of smooth rotation of the rotating shaft can be achieved by arranging the bearing between the sleeve and the rotating shaft.
Furthermore, the connecting structure at the front end side of the longitudinal rod is a cylindrical connecting seat which is fixed on the longitudinal rod. The connecting seat has a simple structure, and is convenient to realize the connection and fixation between the frame and the longitudinal rod.
Furthermore, the connecting structure at the rear end side of the longitudinal rod is a sheet-shaped connecting plate, and the wheel shaft is inserted into a fork opening on the connecting plate. The sheet connecting plate is arranged, so that the longitudinal rod is conveniently connected with the rear wheel, and the rear end of the frame is conveniently connected with the rear end of the longitudinal rod through vibration reduction.
Compared with the prior art, the utility model discloses the beneficial effect who has: the rear wheel and the two longitudinal rods are connected into a whole, the electric vehicle can be prepared in a modularized mode, namely the electric vehicle can be manually divided into the rear bottom fork device, the vehicle frame and the front faucet device in the preparation process, and the rear wheel and the two longitudinal rods can be connected together at an electric vehicle dealer to form the whole electric vehicle. In the transportation, the modules of the same kind can be close to each other, which is favorable for saving the transportation space of the electric vehicle, facilitates the transportation of the electric vehicle and saves the transportation cost of the electric vehicle. In addition, the electric vehicle is prepared in a modularized manner, so that the preparation of the electric vehicle can be effectively carried out in a division cooperation manner, the resource allocation is optimized, and a high-precision item production team is conveniently cultured, so that the production quality of the electric vehicle is effectively guaranteed. This back chain stay device is prepared into a whole, can set up manpower drive arrangement on this integrated device, and it is little that manpower drive arrangement's transmission receives external environmental factor to influence for manpower drive arrangement's job stabilization nature is good.
Drawings
Fig. 1 is a front view of the rear fork apparatus of the electric vehicle.
Fig. 2 is a plan view of the rear fork apparatus of the electric vehicle.
Fig. 3 is a perspective view of the rear fork apparatus of the electric vehicle.
Fig. 4 is a reference diagram of a use state of the rear bottom fork device of the electric vehicle.
Detailed Description
In the figure, the rear bottom fork device of the electric vehicle and the rear wheel 1 are arranged into an integral device which is used for being assembled at the rear side of a frame 12 of the electric vehicle and providing a stable installation basis for a manual driving mechanism of the electric vehicle. The structure of the rear bottom fork device of the electric vehicle comprises a first longitudinal rod 4 and a second longitudinal rod 9 which are arranged in parallel, wherein a wheel shaft 2 of a rear wheel 1 is connected to the rear end parts of the two longitudinal rods, and the front end sides of the two longitudinal rods are connected together, so that the rear bottom fork device forms an integral device. The integrated device is connected with the frame 12 through detachable connecting structures which are respectively arranged at the two end sides of the two longitudinal rods, wherein the connecting structure at the rear end of the longitudinal rods is elastically connected with the rear end of the frame 12 through a shock absorber 13.
Can set up manpower actuating mechanism on this back chain stay device to ride through manpower is supplementary when the electric motor car lacks the electricity. The front end sides of the two longitudinal rods are connected together through a rotating shaft, two ends of the rotating shaft respectively extend out of the outer sides of the two longitudinal rods, pedals 6 are respectively arranged at two extending ends of the rotating shaft, and the rotating shaft is driven to rotate through the pedals 6. A chain wheel 7 is fixedly sleeved on the rotating shaft in the circumferential direction, a flywheel is fixedly sleeved on the wheel shaft 2 at the position of the rear wheel 1 in the circumferential direction, and the chain wheel 7 is connected with the flywheel through a chain 8 to realize transmission. The figure shows that the chain wheel 7 and the flywheel are both positioned between the two longitudinal rods, the chain wheel 7 and the flywheel are both deviated to the first longitudinal rod 4, the front end side of the second longitudinal rod 9 is provided with a sleeve 10 extending to the chain wheel 7, and the sleeve 10 is sleeved on the periphery of the rotating shaft. A bearing is provided between the sleeve 10 and the rotating shaft, and the rotating shaft can smoothly rotate in the inner circumferential direction of the sleeve 10 by the support of the bearing. A cylindrical sleeve 11 is provided at the front end of the first vertical rod 4, the rotating shaft is inserted into the sleeve 11, and a bearing is also provided between the sleeve 11 and the rotating shaft.
The connecting structure at the front end side of the longitudinal rod is a cylindrical connecting seat 5, the connecting seat 5 is welded and fixed on the lower side surface of the longitudinal rod, and the frame 12 and the connecting seat 5 are connected and fixed through a pin shaft. Of course, instead of the cylindrical coupling seat 5, the coupling structure may be a plate-like body, which is fixed to the frame 12 by welding by means of bolts.
A connecting plate 3 is welded and fixed at the rear end part of the longitudinal rod, a fork opening is formed on the connecting plate 3, and a wheel shaft 2 on the rear wheel 1 is inserted in the fork opening. The coupling plate 3 is relatively large in size, the coupling plate 3 protrudes to the upper side of the longitudinal bar, and the coupling plate 3 constitutes a coupling structure of the rear end side of the longitudinal bar. The upper end of the shock absorber 13 is coupled with the rear end side of the frame 12, and the lower end of the shock absorber 13 is coupled with the gusset 3.
Claims (7)
1. The rear bottom fork device of the electric vehicle comprises a first longitudinal rod and a second longitudinal rod which are arranged in parallel, wherein a wheel shaft of a rear wheel is connected with the rear end parts of the two longitudinal rods.
2. The electric vehicle rear bottom fork device according to claim 1, wherein the front end sides of the two longitudinal bars are coupled together through a rotating shaft, both ends of the rotating shaft extend to the outer sides of the two longitudinal bars, respectively, a chain wheel is coupled to the rotating shaft, a flywheel is coupled to the wheel shaft, and the chain wheel is coupled to the flywheel through a chain.
3. The electric vehicle rear fork apparatus of claim 2, wherein the chain wheel and the flywheel are both located between the two longitudinal bars.
4. The electric vehicle rear fork apparatus as claimed in claim 3, wherein the chain wheel and the flywheel are biased toward the first longitudinal bar, and a sleeve extending toward the chain wheel is provided on a front end side of the second longitudinal bar, and the sleeve is fitted around an outer circumference of the rotating shaft.
5. The electric vehicle rear fork device of claim 4, wherein the front end of the first longitudinal bar is provided with a cylindrical sleeve, and the rotating shaft is inserted into the sleeve.
6. The electric vehicle rear fork apparatus as claimed in any one of claims 1 to 5, wherein the coupling structure at the front end side of the longitudinal bar is a cylindrical coupling seat fixed to the longitudinal bar.
7. The electric vehicle rear fork device as claimed in any one of claims 1 to 5, wherein the coupling structure at the rear end side of the longitudinal bar is a plate-shaped coupling plate, and the wheel shaft is inserted into a fork opening on the coupling plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598685.2U CN209938841U (en) | 2019-04-28 | 2019-04-28 | Rear bottom fork device of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598685.2U CN209938841U (en) | 2019-04-28 | 2019-04-28 | Rear bottom fork device of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209938841U true CN209938841U (en) | 2020-01-14 |
Family
ID=69130690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920598685.2U Active CN209938841U (en) | 2019-04-28 | 2019-04-28 | Rear bottom fork device of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209938841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524045A (en) * | 2022-01-25 | 2022-05-24 | 北京阿帕科蓝科技有限公司 | Rear fork and bicycle |
-
2019
- 2019-04-28 CN CN201920598685.2U patent/CN209938841U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524045A (en) * | 2022-01-25 | 2022-05-24 | 北京阿帕科蓝科技有限公司 | Rear fork and bicycle |
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