CN220865553U - Middle shaft transmission device of electric bicycle - Google Patents
Middle shaft transmission device of electric bicycle Download PDFInfo
- Publication number
- CN220865553U CN220865553U CN202322881195.2U CN202322881195U CN220865553U CN 220865553 U CN220865553 U CN 220865553U CN 202322881195 U CN202322881195 U CN 202322881195U CN 220865553 U CN220865553 U CN 220865553U
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- periphery
- electric bicycle
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- shaft
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 50
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 230000006870 function Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to the technical field of electric bicycles, in particular to a middle shaft transmission device of an electric bicycle, which comprises a transmission shaft, wherein a middle shaft sleeve is rotated on the periphery of the transmission shaft, connecting rods are fixed on the periphery of two ends of the transmission shaft, pedals are fixed on one side of each connecting rod, a driving gear is fixed on the periphery of the transmission shaft, a chain is meshed and rotated on the periphery of the driving gear, a rear wheel gear is meshed and rotated on the inner side of the chain, a rear wheel shaft is fixed on the inner side of the rear wheel gear, a connecting plate is fixed on one side of the middle shaft sleeve, a mounting plate is fixed on one side of the connecting plate, a plurality of holes are formed on one side of the mounting plate, and the holes are connected with the transmission shaft and the rear wheel shaft in a rotating manner. Through setting up connecting plate, mounting panel, screw base, protective frame, gasket, protection pad, fixing bolt, make it have safeguard function, make electric bicycle ride the condition that the personnel's bottom of a trouser leg is rolled into driven gear and chain and reduce, all be a protection to electric bicycle's part and electric bicycle personnel of riding.
Description
Technical Field
The utility model relates to the technical field of electric bicycles, in particular to a middle shaft transmission device of an electric bicycle.
Background
The electric bicycle is a vehicle which uses a storage battery as an auxiliary energy source and is provided with a motor, a controller, a storage battery, a handle bar, and other control components and a display instrument system on the basis of a common bicycle, the existing electric bicycle is an important vehicle for people, and the electric bicycle is also quite environment-friendly as a vehicle.
The prior electric bicycle center shaft transmission device has no protective function, the driven gears and chains are exposed outside, so that the bottoms of trousers of riding personnel are easily rolled into the center shaft transmission device, particularly, traffic accidents are very easy to occur when the trousers are rolled into the center shaft transmission device in the riding process, meanwhile, the transmission motor of the center shaft transmission device of most electric bicycles has no waterproof function, water possibly enters the motor to cause the damage of the motor in rainy days or on water-bearing roads, and therefore, the electric bicycle center shaft transmission device is provided for solving the problems.
Disclosure of utility model
The utility model provides a middle shaft transmission device of an electric bicycle, which aims to solve the problems that most of the middle shaft transmission devices of the existing electric bicycles do not have a protection function, the bottoms of trousers of riding personnel are easily involved in the middle shaft transmission devices by exposing the transmitted gears and chains, particularly traffic accidents are easily caused by the involved in the riding process, and meanwhile, the transmission motors of the middle shaft transmission devices of most electric bicycles do not have a waterproof function, and water possibly enters the motors to damage the motors in rainy days or on water-bearing roads.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides an electric bicycle axis transmission, includes the transmission shaft, it has the center sleeve to rotate on the periphery of transmission shaft, all be fixed with the connecting rod on the periphery at transmission shaft both ends, connecting rod one side is fixed with the footboard, be fixed with the driving gear on the periphery of transmission shaft, the meshing is rotated in the periphery of driving gear has the chain, the inboard meshing of chain is rotated and is had the rear wheel tooth wheel, rear wheel tooth wheel inboard is fixed with the rear axle, center sleeve one side is fixed with the connecting plate, connecting plate one side is fixed with the mounting panel, mounting panel one side is equipped with a plurality of holes, the hole all rotates with transmission shaft and rear axle to be connected, mounting panel one side is equipped with protection unit, be fixed with driven gear on the periphery of transmission shaft, mounting panel one side is fixed with the backup pad, the backup pad downside is fixed with driving motor, driving motor needs wire external power source and switch, be fixed with driving gear on the periphery at driving motor axle head, through the meshing rotation between driving gear and the driven gear, the outside of driving motor is equipped with waterproof unit.
Preferably, the protection unit comprises a plurality of thread bases, the equal fixed connection of thread base is in one side of mounting panel, thread base one side is fixed with the protection pad, mounting panel one side is equipped with the protection frame, protection frame contact connection is in one side of protection pad, protection frame one side is equipped with a plurality of fixed orificess, the fixed orifices inboard slides has fixing bolt, fixing bolt passes through the screw thread rotation with thread base inboard and is connected.
Preferably, the waterproof unit is a plurality of first supporting seats, the equal fixed connection of first supporting seat is in one side of backup pad, first supporting seat one side all is equipped with the connecting hole, backup pad one side is equipped with first pivot, first pivot fixed connection is in the inboard of connecting hole, it has the buckler to rotate on the periphery of first pivot, buckler one side is fixed with a plurality of second supporting seats, second supporting seat one side all is equipped with the rotation hole, buckler one side is equipped with the second pivot, second pivot fixed connection is in the inboard of rotation hole, it has the fixed plate to rotate on the periphery of second pivot, the fixed plate is connected with the backup pad contact, the backup pad upside is equipped with a plurality of screw holes, fixed plate one side is equipped with a plurality of round holes, the round hole inboard all slides and has the reinforcing bolt, the reinforcing bolt passes through threaded rotation with the screw hole and is connected.
Preferably, anti-slip pads are fixed on two corresponding sides of the pedal.
Preferably, a gasket is sleeved on the periphery of the fixing bolt, and the gasket is in contact connection with one side of the protection frame.
Preferably, the fixing plate is of an L-shaped structure.
The utility model provides a middle shaft transmission device of an electric bicycle, which has the beneficial effects that:
(1) Through setting up connecting plate, mounting panel, screw base, protective frame, gasket, protection pad, fixing bolt, make it have safeguard function, make electric bicycle ride the condition that the personnel's bottom of a trouser leg was rolled into driven gear and chain reduce, all be a protection to electric bicycle's part and electric bicycle personnel of riding.
(2) Through setting up backup pad, buckler, first pivot, first supporting seat, second pivot, fixed plate, reinforcing bolt, second supporting seat, make it have waterproof function, make electric bicycle when rainy day or going on the road that has water, greatly reduced motor by the probability of water invasion.
Drawings
FIG. 1 is a schematic view of a front perspective view of a bottom bracket bearing assembly for an electric bicycle in accordance with the present utility model;
FIG. 2 is a schematic view of a partially enlarged side cut-away perspective view of a bottom bracket bearing assembly for an electric bicycle according to the present utility model;
FIG. 3 is a schematic side view of a middle shaft transmission device of an electric bicycle;
fig. 4 is a schematic view of a partial enlarged structure of the area a in fig. 3 according to the present utility model.
In the figure: the novel waterproof wheel comprises a transmission shaft 1, a rear wheel shaft 2, a middle shaft sleeve 3, a connecting plate 4, a mounting plate 5, a threaded base 6, a protective frame 7, a gasket 8, a protective pad 9, a fixing bolt 10, a driving gear 11, a rear wheel gear 12, a chain 13, a pedal 14, a skid-proof pad 15, a connecting rod 16, a driving motor 17, a driving gear 18, a driven gear 19, a supporting plate 20, a waterproof cover 21, a first rotating shaft 22, a first supporting seat 23, a second rotating shaft 24, a fixing plate 25, a reinforcing bolt 26 and a second supporting seat 27.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-4, an electric bicycle center shaft transmission device comprises a transmission shaft 1, wherein a center shaft sleeve 3 rotates on the periphery of the transmission shaft 1, connecting rods 16 are fixed on the periphery of two ends of the transmission shaft 1, pedals 14 are fixed on one side of each connecting rod 16, and anti-slip pads 15 are fixed on two corresponding sides of each pedal 14, so that the electric bicycle center shaft transmission device has an anti-slip function, and the probability of slipping of electric bicycle riders when the pedals are used is reduced.
The driving gear 11 is fixed on the periphery of the transmission shaft 1, the chain 13 is meshed and rotated on the periphery of the driving gear 11, the rear gear 12 is meshed and rotated on the inner side of the chain 13, the rear wheel shaft 2 is fixed on the inner side of the rear gear 12, the connecting plate 4 is fixed on one side of the middle shaft sleeve 3, the mounting plate 5 is fixed on one side of the connecting plate 4, one side of the mounting plate 5 is provided with a plurality of holes, the holes are all rotationally connected with the transmission shaft 1 and the rear wheel shaft 2, one side of the mounting plate 5 is provided with a protection unit, the protection unit comprises a plurality of threaded bases 6, the threaded bases 6 are fixedly connected on one side of the mounting plate 5, a protection pad 9 is fixed on one side of the threaded bases 6, a protection frame 7 is arranged on one side of the protection frame 7, a plurality of fixing holes are formed in a sliding mode on the inner side of the fixing holes, the fixing bolts 10 are connected with the inner side of the threaded bases 6 through threads in a rotating mode, so that the fixing bolts 10 have protection functions, the trouser legs of an electric bicycle rider roll in the driving gear and the chain are reduced, and the parts of the electric bicycle rider are protected, and when the electric bicycle rider are protected specifically: the protection frame 7 is fixed on the threaded base 6 through the fixing bolts 10, the protection pad 9 on the threaded base 6 has the functions of buffering and protecting the protection frame 7, the protection frame 7 is installed when protection is needed, meanwhile, the protection frame 7 is detached by directly screwing off the fixing bolts 10 when the chain 13 or the transmission gear is needed to be checked and maintained due to the fact that the protection frame 7 is detachably installed.
Be fixed with driven gear 19 on the periphery of transmission shaft 1, mounting panel 5 one side is fixed with backup pad 20, backup pad 20 downside is fixed with driving motor 17, driving motor 17 needs external power and switch of wire, be fixed with driving gear 18 on driving motor 17 axle head's the periphery, be connected through the meshing rotation between driving gear 18 and the driven gear 19, driving motor 17's the outside is equipped with waterproof unit, waterproof unit a plurality of first supporting seats 23, first supporting seat 23 all fixed connection is in one side of backup pad 20, first supporting seat 23 one side all is equipped with the connecting hole, backup pad 20 one side is equipped with first pivot 22, first pivot 22 fixed connection is in the inboard of connecting hole, it has buckler 21 to rotate on the periphery of first pivot 22, buckler 21 one side is fixed with a plurality of second supporting seats 27, it has the rotation hole all to be equipped with on one side of buckler 21, second pivot 24 fixed connection is in the inboard of rotation hole, it has fixed plate 25 to rotate on the periphery of second pivot 24, fixed plate 25 and backup pad 20 contact connection, backup pad 20 upside is equipped with a plurality of screw holes, fixed plate 25 inboard side is equipped with consolidates, consolidate motor 26 when having the big joint hole when making water-proof bolt and the big-time of running, when it is carried out by the water, the big probability of running on the bicycle is realized by the screw hole, the big-hole, the water-proof bolt is reduced by the implementation of the big probability, when running is realized by the screw hole, the bicycle is easy to be connected with the following: the waterproof cover 21 is covered on the outer side of the driving motor 17 under the action of the first rotating shaft 22 and the first supporting seat 23, the fixing plate 25 is contacted on the upper side of the supporting plate 20 under the action of the second rotating shaft 24 and the second supporting seat 27, and then the waterproof cover 21 is fixed through the reinforcing bolts 26, and when the driving motor 17 needs to be replaced or maintained, the waterproof cover 21 can be automatically separated only by screwing off the reinforcing bolts 26.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The utility model provides an electric bicycle axis transmission, includes transmission shaft (1), its characterized in that, it has center sleeve (3) to rotate on the periphery of transmission shaft (1), all be fixed with connecting rod (16) on the periphery at transmission shaft (1) both ends, connecting rod (16) one side is fixed with footboard (14), be fixed with driving gear (11) on the periphery of transmission shaft (1), meshing rotation has chain (13) on the periphery of driving gear (11), the inboard meshing rotation of chain (13) has rear wheel tooth wheel (12), rear wheel tooth wheel (12) inboard is fixed with rear axle (2), center sleeve (3) one side is fixed with connecting plate (4), connecting plate (4) one side is fixed with mounting panel (5), mounting panel (5) one side is equipped with a plurality of holes, the hole all is connected with transmission shaft (1) and rear axle (2) rotation, mounting panel (5) one side is equipped with the protection unit, be fixed with driven gear (19) on the periphery of transmission shaft (1), mounting panel (5) one side is fixed with backup pad (20), motor (20) inboard meshing rotation has rear wheel tooth wheel (12), motor (17) are fixed with on the motor (20) side, drive wire (17) and are fixed with on the external drive wire (17), the driving gear (18) is connected with the driven gear (19) through meshing rotation, and a waterproof unit is arranged on the outer side of the driving motor (17).
2. The electric bicycle bottom bracket bearing device according to claim 1, wherein the protection unit comprises a plurality of threaded bases (6), the threaded bases (6) are fixedly connected to one side of the mounting plate (5), a protection pad (9) is fixed to one side of the threaded bases (6), a protection frame (7) is arranged on one side of the mounting plate (5), the protection frame (7) is in contact connection to one side of the protection pad (9), a plurality of fixing holes are formed in one side of the protection frame (7), fixing bolts (10) are slidably arranged on the inner sides of the fixing holes, and the fixing bolts (10) are in threaded rotation connection with the inner sides of the threaded bases (6).
3. The electric bicycle center shaft transmission device according to claim 1, wherein the waterproof unit is provided with a plurality of first supporting seats (23), the first supporting seats (23) are fixedly connected to one side of the supporting plate (20), the first supporting seats (23) are provided with connecting holes on one side, the supporting plate (20) is provided with a first rotating shaft (22) on one side, the first rotating shaft (22) is fixedly connected to the inner side of the connecting holes, the periphery of the first rotating shaft (22) is rotationally provided with a waterproof cover (21), one side of the waterproof cover (21) is fixedly provided with a plurality of second supporting seats (27), one side of the second supporting seats (27) is provided with rotating holes, one side of the waterproof cover (21) is provided with a second rotating shaft (24), the second rotating shaft (24) is fixedly connected to the inner side of the rotating holes, the second rotating shaft (24) is rotationally provided with a fixing plate (25), the fixing plate (25) is in contact connection with the supporting plate (20), the side of the supporting plate (20) is provided with a plurality of threaded holes, one side of the fixing plate (25) is provided with a plurality of reinforcing round holes (26), and the reinforcing round holes are rotationally connected to the inner sides through a plurality of round holes (26).
4. The electric bicycle bottom bracket transmission according to claim 1, wherein anti-slip pads (15) are fixed on both sides of the pedal (14) corresponding to each other.
5. The electric bicycle bottom bracket transmission device according to claim 2, wherein a gasket (8) is sleeved on the periphery of the fixing bolt (10), and the gasket (8) is in contact connection with one side of the protective frame (7).
6. A bottom bracket transmission for electric bicycles, according to claim 3, characterized in that the fixing plate (25) is of L-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322881195.2U CN220865553U (en) | 2023-10-26 | 2023-10-26 | Middle shaft transmission device of electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322881195.2U CN220865553U (en) | 2023-10-26 | 2023-10-26 | Middle shaft transmission device of electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220865553U true CN220865553U (en) | 2024-04-30 |
Family
ID=90821333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322881195.2U Active CN220865553U (en) | 2023-10-26 | 2023-10-26 | Middle shaft transmission device of electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220865553U (en) |
-
2023
- 2023-10-26 CN CN202322881195.2U patent/CN220865553U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |