CN217159470U

CN217159470U - Motor for electric bicycle

Info

Publication number: CN217159470U
Application number: CN202123444442.XU
Authority: CN
Inventors: 陈国庆
Original assignee: Changzhou Dasen Machinery Co ltd
Current assignee: Changzhou Dasen Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-09
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a motor for electric bicycle, including motor main body, the motor main body outside is connected with the reduction casing, bottom rotation installs first speed reduction axle, second speed reduction axle, third speed reduction axle and fourth speed reduction axle in the reduction casing, motor main body output shaft runs through the reduction casing and is connected with first speed reduction axle, first speed reduction axle has intermeshing's first reduction gear group with the fixed cover of second speed reduction axle surface, second speed reduction axle has intermeshing's second reduction gear group with the fixed cover of third speed reduction axle surface. The utility model discloses a mutually supporting between motor main part, reduction housing, each reduction shaft and each reduction gear group can realize multistage deceleration to motor main part's output shaft, and then makes fourth reduction shaft rotate at a slow speed, and the too fast problem that leads to children to be surprised appears when can effectively avoiding electric bicycle to start, has promoted the security of children electric bicycle driving process.

Description

Motor for electric bicycle

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to motor for electric bicycle.

Background

The electric bicycle is a mechatronic personal transportation tool which takes a storage battery as an auxiliary energy source and is provided with an electric motor, a controller, the storage battery, a rotating handle and other control parts and a display instrument system on the basis of a common bicycle.

Wherein, the motor is a comparatively important spare part among the electric bicycle, however, the rotational speed of motor is very fast on current children's electric motor car, simultaneously because children's control power is relatively poor, leads to the bicycle to be starting and the too fast problem of speed of a motor vehicle appears in the in-process suddenly, leads to children easily to receive the startle, also has certain potential safety hazard simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the prior art and providing a motor for an electric bicycle.

In order to achieve the above purpose, the utility model adopts the following technical scheme: motor for electric bicycle, including the motor main part, the motor main part outside is connected with the reduction casing, bottom rotation installs first reduction shaft, second reduction shaft, third reduction shaft and fourth reduction shaft in the reduction casing, motor main part output shaft runs through the reduction casing and is connected with first reduction shaft, first reduction shaft and the fixed first reduction gear train that has intermeshing that has cup jointed of second reduction shaft surface, second reduction shaft and the fixed second reduction gear train that has intermeshing that has cup jointed of third reduction shaft and third reduction shaft surface, third reduction shaft and the fixed third reduction gear train that has cup jointed intermeshing of fourth reduction shaft surface, reduction casing lateral wall can be dismantled and be connected with the closing cap board, fourth reduction shaft runs through the closing cap board and outwards extends.

As a further description of the above technical solution: first reduction gear set, second reduction gear set and third reduction gear set all include pinion and gear wheel, and are a plurality of the pinion is fixed the cup joint respectively at first reduction shaft, second reduction shaft and third reduction shaft surface, and is a plurality of the gear wheel is fixed the cup joint respectively at second reduction shaft, third reduction shaft and fourth reduction shaft surface.

As a further description of the above technical solution: the outer side wall of the sealing cover plate is fixedly connected with a sealing ring, and the outer periphery of the sealing ring is matched with the inner periphery of the speed reducing shell in size.

As a further description of the above technical solution: the bottom fixedly connected with many internal thread pipes in the speed reduction casing, the thread through hole that sets up a plurality of positions and internal thread pipe one-to-one is run through to the apron lateral wall, and is adjacent threaded connection has locking bolt between thread through hole and the internal thread pipe.

As a further description of the above technical solution: the speed reduction shell inside wall runs through and has seted up clean hole, clean hole lateral wall fixedly connected with goes out oil pipe, play oil pipe surface screw thread has cup jointed the stopcock.

As a further description of the above technical solution: the side wall of the cover sealing plate penetrates through a mounting hole matched with the fourth speed reducing shaft.

The utility model discloses following beneficial effect has:

1. compared with the prior art, this motor for electric bicycle, through motor main part, reduction housing, each reduction shaft and each reduction gear group between mutually supporting, can realize multistage deceleration to motor main part's output shaft, and then make fourth reduction shaft rotate at a slow speed, the too fast problem that leads to children to be surprised appears of speed when can effectively avoiding electric bicycle to start, has promoted the security of children electric bicycle travel in-process, reduces the potential safety hazard of traveling.

2. Compared with the prior art, this motor for electric bicycle, through the casing that slows down, closing cap board, internal thread pipe, locking bolt, go out mutually supporting between oil pipe and the stopcock, closing cap board detachable connects on the casing that slows down, can dismantle the closing cap board and overhaul the maintenance to the casing internal part that slows down, the interpolation of the lubricating oil of also being convenient for, and the setting of going out the oil pipe is then be convenient for the discharge of unnecessary lubricating oil in the casing that slows down.

Drawings

Fig. 1 is a schematic structural view of a motor for an electric bicycle according to the present invention;

FIG. 2 is a cross-sectional view of a reduction case in a motor for an electric bicycle according to the present invention;

fig. 3 is a schematic structural view of the sealing cover plate in the motor for the electric bicycle provided by the present invention.

Illustration of the drawings:

1. a motor main body; 2. a reduction housing; 3. a first reduction shaft; 4. a second reduction shaft; 5. a third reduction shaft; 6. a fourth reduction shaft; 7. a first reduction gear set; 8. a second reduction gear set; 9. a third reduction gear set; 10. sealing the cover plate; 11. a seal ring; 12. an internally threaded tube; 13. a threaded through hole; 14. locking the bolt; 15. an oil outlet pipe; 16. a pipe plug; 17. and (7) installing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a motor for an electric bicycle: comprises a motor main body 1, a speed reducing shell body 2 is connected with the outer side of the motor main body 1, a first speed reducing shaft 3, a second speed reducing shaft 4, a third speed reducing shaft 5 and a fourth speed reducing shaft 6 are rotatably arranged at the bottom in the speed reducing shell body 2, an output shaft of the motor main body 1 penetrates through the speed reducing shell body 2 and is connected with the first speed reducing shaft 3, a first speed reducing gear set 7 which is mutually meshed is fixedly sleeved on the outer surfaces of the first speed reducing shaft 3 and the second speed reducing shaft 4, a second speed reducing gear set 8 which is mutually meshed is fixedly sleeved on the outer surfaces of the second speed reducing shaft 4 and the third speed reducing shaft 5, a third speed reducing gear set 9 which is mutually meshed is fixedly sleeved on the outer surfaces of the third speed reducing shaft 5 and the fourth speed reducing shaft 6, the first speed reducing gear set 7, the second speed reducing gear set 8 and the third speed reducing gear set 9 respectively comprise pinions and large gears, the plurality of pinions are respectively fixedly sleeved on the outer surfaces of the first speed reducing shaft 3, the second speed reducing shaft 4 and the third speed reducing shaft 5, a plurality of gear wheels are fixedly sleeved on the outer surfaces of the second speed reducing shaft 4, the third speed reducing shaft 5 and the fourth speed reducing shaft 6 respectively, wherein the meshing connection mode of each gear wheel and the pinion can be shown in figure 2, the purpose of reducing speed can be achieved by driving the gear wheels to rotate through the mutually meshed pinions, namely, the rotating speeds of the first speed reducing shaft 3, the second speed reducing shaft 4, the third speed reducing shaft 5 and the fourth speed reducing shaft 6 are sequentially reduced, so that the fourth speed reducing shaft 6 which is finally used as an output end rotates at a low speed, and the running safety of the electric bicycle is guaranteed.

Wherein, 2 lateral walls of speed reduction casing can be dismantled and be connected with closing cap board 10, many internal thread pipes 12 of bottom fixedly connected with in the speed reduction casing 2, the thread through hole 13 of having seted up a plurality of positions and internal thread pipe 12 one-to-one is run through to closing cap board 10 lateral wall, threaded connection has locking bolt 14 between adjacent thread through hole 13 and the internal thread pipe 12, locking bolt 14 can be followed internal thread pipe 12 and dismantled, can demolish closing cap board 10 from speed reduction casing 2 like this, so that overhaul in the speed reduction casing 2, also can demolish closing cap board 10 when needing simultaneously and add lubricating oil toward each gear wheel and pinion engagement department, make the meshing transmission of gear wheel and pinion more smooth and easy.

Further, closing cap board 10 lateral wall fixedly connected with sealing washer 11, the adaptation of 11 periphery sizes and the 2 interior circumference sizes of speed reduction casing of sealing washer 11, the leakproofness of 2 week sides of speed reduction casing can be guaranteed in the setting of sealing washer 11, avoids inside lubricating oil drippage, and fourth speed reduction axle 6 runs through closing cap board 10 and outwards extends, and closing cap board 10 lateral wall runs through the mounting hole 17 of seting up with the 6 looks adaptations of fourth speed reduction axle.

2 inside walls of speed reduction casing run through and have seted up clean hole, clean hole lateral wall fixedly connected with goes out oil pipe 15, go out oil pipe 15 surface screw thread and have cup jointed stopcock 16, it is located speed reduction casing 2 bottommost position to go out oil pipe 15, along with the meshing transmission of gear and gear wheel down, unnecessary lubricating oil drips downwards and progressively piles up in clean hole position on it, unnecessary lubricating oil can in time be through 15 outwards discharges of oil pipe after stopcock 16 opens, avoid speed reduction casing 2 interior oil dirt to pile up thick influence its internal environment.

The utility model discloses its functional principle is explained to following mode of operation of accessible:

after the motor main part 1 starts, its output shaft drives first speed reduction shaft 3 and the pinion rotation on it, the pinion drives second speed reduction shaft 4 through the gear wheel rather than the meshing and rotates, first reduction gear 7 works promptly, reach one-level speed reduction purpose, the same reason, pinion on it drives the gear wheel rotation on the third speed reduction shaft 5 when second speed reduction shaft 4 rotates, second reduction gear 8 works and reaches second grade speed reduction purpose, the same reason, fourth speed reduction shaft 6 as final output is under the drive of third reduction gear 9, its rotational speed is lower relatively, thereby can drive the drive wheel rotation on the electric bicycle, the too fast problem that leads to children to be surprised when can effectively avoid electric bicycle to start appears.

In addition, when noticing that electric bicycle's drive wheel starts comparatively puckery, can dismantle apron 10 from speed reduction casing 2 through unscrewing locking bolt 14, can add lubricating oil toward each gear wheel and pinion engagement position this moment, promote its transmission effect, unnecessary lubricating oil can in time be through going out oil pipe 15 outwards discharging after stopcock 16 is opened, avoids speed reduction casing 2 interior oil dirt to pile up thick influence its internal environment.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a motor for electric bicycle, includes motor main part (1), its characterized in that: the motor is characterized in that a speed reduction shell (2) is connected to the outer side of the motor main body (1), a first speed reduction shaft (3), a second speed reduction shaft (4), a third speed reduction shaft (5) and a fourth speed reduction shaft (6) are rotatably mounted at the bottom in the speed reduction shell (2), and an output shaft of the motor main body (1) penetrates through the speed reduction shell (2) and is connected with the first speed reduction shaft (3);

the outer surfaces of the first speed reducing shaft (3) and the second speed reducing shaft (4) are fixedly sleeved with a first speed reducing gear set (7) which is meshed with each other, the outer surfaces of the second speed reducing shaft (4) and the third speed reducing shaft (5) are fixedly sleeved with a second speed reducing gear set (8) which is meshed with each other, and the outer surfaces of the third speed reducing shaft (5) and the fourth speed reducing shaft (6) are fixedly sleeved with a third speed reducing gear set (9) which is meshed with each other;

the side wall of the speed reducing shell (2) is detachably connected with a sealing cover plate (10), and the fourth speed reducing shaft (6) penetrates through the sealing cover plate (10) and extends outwards.

2. The motor for an electric bicycle according to claim 1, wherein: first reduction gear set (7), second reduction gear set (8) and third reduction gear set (9) all include pinion and gear wheel, and are a plurality of the pinion is fixed cup joint respectively at first reduction shaft (3), second reduction shaft (4) and third reduction shaft (5) surface, and is a plurality of the gear wheel is fixed cup joint respectively at second reduction shaft (4), third reduction shaft (5) and fourth reduction shaft (6) surface.

3. The motor for an electric bicycle according to claim 1, wherein: the outer side wall of the sealing cover plate (10) is fixedly connected with a sealing ring (11), and the outer periphery of the sealing ring (11) is matched with the inner periphery of the speed reducing shell (2) in size.

4. The motor for an electric bicycle according to claim 1, wherein: many internal thread pipes (12) of bottom fixedly connected with in speed reduction casing (2), the thread through hole (13) of having seted up a plurality of positions and internal thread pipe (12) one-to-one are run through to apron (10) lateral wall, and are adjacent threaded connection has locking bolt (14) between thread through hole (13) and internal thread pipe (12).

5. The motor for an electric bicycle according to claim 1, wherein: the speed reduction casing (2) inside wall runs through and has seted up clean hole, clean hole lateral wall fixedly connected with goes out oil pipe (15), play oil pipe (15) surface screw thread cover has cup jointed stopcock (16).

6. The motor for an electric bicycle according to claim 1, wherein: and a mounting hole (17) matched with the fourth speed reducing shaft (6) is formed in the side wall of the sealing cover plate (10) in a penetrating manner.