CN209956173U - Prevent axis, device and vehicle of driving - Google Patents
Prevent axis, device and vehicle of driving Download PDFInfo
- Publication number
- CN209956173U CN209956173U CN201822128444.XU CN201822128444U CN209956173U CN 209956173 U CN209956173 U CN 209956173U CN 201822128444 U CN201822128444 U CN 201822128444U CN 209956173 U CN209956173 U CN 209956173U
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- China
- Prior art keywords
- damping
- bottom bracket
- shaft
- middle shaft
- shell
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides a prevent axis, device and vehicle of driving, this axis includes: the middle shaft shell assembly is provided with openings at two ends; the shaft core is inserted in the middle shaft shell component, and two ends of the shaft core extend out of the opening; the shaft core is sleeved with at least two bearings, and the outer edges of the bearings abut against the inner wall of the middle shaft shell component; at least one of the bearings is a damping bearing. Even if the flywheel is blocked, the middle shaft cannot rotate due to the resistance of the damping bearing, so that the probability of the occurrence of the 'runaway' accident can be greatly reduced. Through adjusting suitable damping size, can reduce the harm of damping to riding experience when reducing "driving" probability as far as possible.
Description
Technical Field
The utility model relates to a axis, in particular to axis, device and vehicle that prevent driving belong to mechanical field.
Background
The boosting principle in the market of the current booster vehicle is divided into a speed control type and a moment control type. When the speed control type moped is normally used, the pedal is stepped by a foot to provide an initial boosting speed, the speed sensor provides a corresponding pulse signal according to the detected rotating speed of a middle shaft connected with the pedal and then transmits the pulse signal to the controller, and the controller outputs a corresponding current according to the input rotating speed and a control algorithm, so that the motor is driven to provide boosting, and the rotating speed of the motor is matched with the rotating speed of the middle shaft. Under normal conditions, a flywheel of the moped is provided with a ratchet wheel structure, so that the flywheel can rotate under the driving of the pedal and the transmission structure only when a user steps on the pedal; the flywheel is not rotated during pushing (no pedaling). However, if foreign matters or rust occur in the flywheel, the flywheel is easy to block, once the flywheel is blocked, the flywheel can rotate along with the hub, at the moment, if the moped is pushed, the flywheel drives the fluted disc and the central shaft to be linked through the chain, the speed sensor detects the rotating speed of the central shaft and sends a speed signal to the controller, the controller outputs current to drive the motor to rotate, and then an 'runaway' event occurs, so that the vehicle moves forward uncontrollably, and unexpected safety accidents are caused.
For this type of "runaway" event, the usual practice is to increase the speed of the central shaft that starts the motor assist, which results in no assist during low speed riding and poor experience.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a prevent axis, device and vehicle of driving according to above-mentioned prior art not enough.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
a bottom bracket for preventing coaster, comprising:
the middle shaft shell assembly is provided with openings at two ends;
the shaft core is inserted in the middle shaft shell component, and two ends of the shaft core extend out of the opening;
the shaft core is sleeved with at least two bearings, and the outer edges of the bearings abut against the inner wall of the middle shaft shell component; at least one of the bearings is a damping bearing.
The utility model discloses a further improvement lies in, damping bearing's coefficient of friction is greater than 0.01.
The utility model discloses a further improvement lies in, the axle core with be provided with the damping packing between the axis shell subassembly.
The utility model discloses a further improvement lies in, the damping filling member is at least one kind in damping gasket, damping ring, damping nested piece, damping curved surface, the damping filler.
The utility model has the further improvement that the damping filling piece is bonded or connected with the inner wall of the middle shaft shell component, and the damping filling piece is tightly attached with the shaft core to form a friction structure;
or the damping filling piece is bonded or in key connection with the shaft core, and the damping filling piece is tightly attached to the inner wall of the middle shaft shell component to form a friction structure.
The utility model has the further improvement that the middle shaft casing component comprises a middle shaft casing and two middle shaft bowls; the central shaft bowl is cylindrical; the middle shaft shell is tubular, and two ends of the middle shaft shell are respectively inserted into the first ends of the two middle shaft bowls.
The utility model is further improved in that the bearing is accommodated in the central shaft bowl; the bearing is located between the bearing limit structure and the end part of the middle shaft shell.
The utility model discloses still relate to a device of anti-runaway, it includes:
the middle shaft is provided with a power-assisted sensor for detecting the rotating speed of a shaft core;
the crank pedal assembly is arranged at the end part of the shaft core;
the fluted disc is connected with the crank pedal assembly;
the flywheel is fixedly connected with the hub and is in transmission connection with the shaft core through a chain.
The utility model discloses still relate to an electric bicycle who prevents driving, it includes the axis.
The utility model has the advantages that: the damping bearings are arranged at the two ends of the shaft core to improve the rotating resistance of the middle shaft. Even if the flywheel is blocked, the middle shaft cannot rotate due to the resistance of the damping bearing, so that the probability of the occurrence of the 'runaway' accident can be greatly reduced. Through adjusting suitable damping size, can reduce the harm of damping to riding experience when reducing "driving" probability as far as possible.
Drawings
Fig. 1 is a sectional structure view of a middle shaft of the present invention;
fig. 2 is a schematic view of a vehicle in the present invention;
fig. 3 is a block diagram of a control system of a vehicle according to the present invention;
fig. 4 is a sectional structure view of another middle axle of the present invention.
The reference numbers are as follows:
1 a middle shaft shell component, 2 a shaft core, 3 bearings, 4 middle shafts, 5 middle shaft shells, 6 middle shaft bowls,
7 bearing limit structure, 8 damping filling pieces, 9 crank pedal components, 10 fluted discs, 11 flywheels,
12 boost sensor, 13 wheels, 14 hubs, 15 chains, 16 pedals, 17 cranks,
18 a controller.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1: as shown in fig. 1, the present embodiment discloses a middle axle for preventing galloping, which includes: a bottom bracket shell component 1, a shaft core 2 and two bearings 3. The middle shaft shell component 1 is internally provided with a cavity, and two ends of the middle shaft shell component are provided with openings. The shaft core 2 is cylindrical, the middle section of the shaft core is inserted into the middle shaft shell component 1, and two ends of the shaft core 2 respectively extend out of an opening of the middle shaft shell component 1. The bearing 3 is sleeved on the shaft core 2, and the outer edge of the bearing 3 is propped against the inner wall of the middle shaft shell component 1.
Of the two bearings 3, at least one bearing 3 is a damping bearing. The damping bearing can increase the torque required for rotation of the shaft core 2. During the rotation of the shaft core 2 from the stationary state, the torque applied to the shaft core 2 needs to be larger than the static friction force caused by the damping bearing to make the shaft core 2 start to rotate. By arranging the damping bearing, when the flywheel of the moped is slightly blocked, the blocked flywheel cannot drive the shaft core 2 to rotate through the transmission structure, so that the driving accident caused by the speed type moped in a non-riding state when the flywheel is blocked is avoided.
The friction coefficient of the damping bearing is greater than 0.01 during rotation of the shaft core 2. The torque required to overcome the frictional forces caused by the damping bearings is acceptable to most users and is greater than the torque that the flywheel can deliver in the event of a minor failure. Under the condition that the flywheel is blocked, if the moped is pushed, the outer ring of the flywheel is forced to be kept static under the action of the damping bearing of the middle shaft 4 instead of rotating along with the hub.
The bottom bracket shell assembly 1 comprises a bottom bracket shell 5 and two bottom bracket bowls 6. The central shaft bowl 6 is cylindrical, and the central shaft shell 5 is tubular. Two ends of the middle shaft shell 5 are respectively inserted and connected with the first ends of the two middle shaft bowls 6. The outer surface of the middle shaft bowl 6 is provided with a thread structure which is matched with a five-way pipe of the frame; the opening of the bottom bracket shell assembly 1 is arranged at the second end of the bottom bracket bowl 6.
Each of the central shaft bowls 6 accommodates a bearing 3 therein. The inboard of well axle bowl 6 is provided with bearing limit structure 7, and bearing limit structure sets up the second end at well axle bowl 6. The bearing 3 is located between the bearing retainer 7 and the end of the center shaft housing 5, and the end of the center shaft housing 5 and the bearing retainer 7 are used to limit the axial displacement of the bearing 3. The outer edge of the bearing 3 is in interference fit with the inner surface of the central shaft bowl 6, and the inner edge of the bearing 3 is in interference fit with the shaft core 2.
The embodiment also relates to a vehicle, wherein the vehicle is a two-wheel vehicle or a three-wheel vehicle, and the middle shaft 4 is arranged on a frame of the vehicle.
As shown in fig. 1 to 3, the present embodiment also relates to an anti-galloping device, which comprises the central shaft 4, the crank pedal assembly 9, the toothed disc 10, and the flywheel 11; the device may be part of the vehicle.
The bottom bracket 4 is intended to be mounted in a bottom bracket of a vehicle. The middle shaft 4 is provided with a power-assisted sensor 12 for detecting the rotating speed of the shaft core 2. The two ends of the shaft core 2 are respectively connected with the cranks 17 of the two crank pedal assemblies 9. The end part of the middle shaft 4 is in a quadrangular shape, and the end surface of the middle shaft is provided with a bolt hole. The end of the middle shaft 4 is inserted into the quadrangular hole of the crank 17 and is fastened and connected through a bolt. The fluted disc 10 is fixedly connected with the crank pedal assembly 9 or the shaft core 2 through bolts. The freewheel 11 is connected to the hub 14 of the wheel 14. The flywheel 11 is in transmission connection with the fluted disc 10 through a chain 16.
The crank pedal assembly 9 includes a crank 17 and pedals 16, the pedals 16 being mounted at the ends of the crank 17. The user can drive the shaft core 2 and the toothed disc 10 to rotate by alternately stepping on the pedals 16. The toothed disc 10 drives the flywheel 11, the hub 14 and the wheel 14 to rotate through the chain 16.
The flywheel 11 comprises an inner ring and an outer ring, and a unidirectional ratchet wheel assembly is arranged between the outer ring and the outer ring of the flywheel 11. The outer ring of the flywheel 11 is in transmission connection with a chain 16; the inner ring of the flywheel 11 is fixedly connected with the hub 14. The rotation of the flywheel 11 refers to the rotation of the outer ring of the flywheel 11. Due to the existence of the ratchet wheel component, when the flywheel 11 is normal, the outer ring of the flywheel 11 can only drive the inner ring to rotate in the positive direction, and cannot drive the inner ring to rotate in the reverse direction; when the flywheel 11 is blocked due to a fault, the inner ring and the outer ring of the flywheel 11 are stuck in a blocking way, so that damping exists between the outer ring of the flywheel 11 and the memory, and the unidirectional rotation function part of the ratchet wheel assembly fails.
In this embodiment, the hub 14 is an electric hub, and a motor is provided therein. The hub 14 and the boost sensor 12 are electrically connected to a controller 18. When the power sensor 12 detects that the shaft core 2 rotates, the controller 18 controls the hub 14 to rotate at a corresponding speed, so as to realize power control.
When the user starts to ride, the pedal needs to be pedaled slightly hard, so that the shaft core 2 of the middle shaft 4 starts to rotate against the damping. When the axle core rotates, the controller 18 will determine the pedaling speed of the user according to the rotation speed of the central axle 4, so as to control the rotation speed of the hub 14. The user can change the traveling speed of the vehicle according to the speed by changing the pedaling.
When the user pushes the vehicle and the flywheel 11 is normal, the bottom bracket 4 does not rotate because the pedal 16 is not stepped on. The outer ring of the freewheel 11 also remains stationary and its inner ring rotates with the wheel 14 and the hub 14.
When a user pushes a vehicle and the flywheel 11 is blocked due to a fault, at the moment, a ratchet wheel part between an inner ring and an outer ring of the flywheel 11 fails, the inner ring of the flywheel 11 applies thrust to the outer ring of the flywheel, the thrust can be transmitted to the middle shaft 4 along with the transmission mechanism, but the middle shaft 4 has certain damping, so when the acting force of the inner ring of the flywheel 11 to the outer ring is not enough to push the shaft core 2 of the middle shaft 4 to rotate, the damping of the shaft core 2 is greater than that of the blocked flywheel 11, the shaft core 2 of the middle shaft 4 can continuously keep static, and the middle shaft 4 enables the outer ring of the flywheel 11 to overcome the damping between the outer ring and the inner ring, so that a vehicle-flying accident caused by the fact that the flywheel 11 drives the shaft core.
Example 2: as shown in fig. 4, the main difference between this embodiment and embodiment 1 is the structure of the bottom bracket. In order to further increase the torque required for the rotation of the shaft core 2, a damping filling 8 is arranged between the shaft core 2 and the central shaft housing 5. The damping filling part 8 is at least one of a damping gasket, a damping ring, a damping sleeve block, a damping curved surface and a damping filling material. The damping insert 8 is intended to form a fixed connection with one of the central shaft housings 5 and to form a friction structure with the other. For example, the damping filler 8 may be a damping shim bonded or keyed to the inner wall of the bottom bracket shell assembly 1 and closely attached to the side of the bottom bracket shell 2 to form a friction structure. For another example, the damping filler 8 is bonded, hinged or keyed to the side of the axle core 2 and forms a friction structure with the inner wall abutting against the bottom bracket shell assembly 1.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A bottom bracket for preventing coaster, comprising:
the middle shaft shell assembly is provided with openings at two ends;
the shaft core is inserted in the middle shaft shell component, and two ends of the shaft core extend out of the opening;
the shaft core is sleeved with at least two bearings, and the outer edges of the bearings abut against the inner wall of the middle shaft shell component; at least one of the bearings is a damping bearing, and the friction coefficient of the damping bearing is greater than 0.01.
2. The bottom bracket axle of claim 1, wherein a damping filler is disposed between the axle core and the bottom bracket axle housing assembly.
3. The bottom bracket axle of claim 2, wherein the damping filler is at least one of a damping shim, a damping ring, a damping sleeve block, a damping curved surface and a damping filler.
4. The bottom bracket axle for preventing the runaway as claimed in claim 2, wherein the damping filling piece is bonded or connected with the inner wall of the bottom bracket axle housing component, and the damping filling piece is tightly attached to the axle core to form a friction structure;
or the damping filling piece is bonded or in key connection with the shaft core, and the damping filling piece is tightly attached to the inner wall of the middle shaft shell component to form a friction structure.
5. The bottom bracket shell assembly of claim 1, comprising a bottom bracket shell and two bottom bracket bowls; the central shaft bowl is cylindrical; the middle shaft shell is tubular, and two ends of the middle shaft shell are respectively inserted into the first ends of the two middle shaft bowls.
6. The bottom bracket shell as defined in claim 5, wherein said bearing is received in said bottom bracket shell; the bearing is located between the bearing limit structure and the end part of the middle shaft shell.
7. An anti-runaway device, comprising:
a bottom bracket according to any one of claims 1 to 6, having a force sensor mounted thereon for detecting the rotational speed of said axle core;
the crank pedal assembly is arranged at the end part of the shaft core;
the fluted disc is connected with the crank pedal assembly;
the flywheel is fixedly connected with the hub and is in transmission connection with the shaft core through a chain.
8. An electric bicycle for preventing from flying, which is characterized by comprising the center shaft of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822128444.XU CN209956173U (en) | 2018-12-18 | 2018-12-18 | Prevent axis, device and vehicle of driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822128444.XU CN209956173U (en) | 2018-12-18 | 2018-12-18 | Prevent axis, device and vehicle of driving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209956173U true CN209956173U (en) | 2020-01-17 |
Family
ID=69236174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822128444.XU Expired - Fee Related CN209956173U (en) | 2018-12-18 | 2018-12-18 | Prevent axis, device and vehicle of driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209956173U (en) |
-
2018
- 2018-12-18 CN CN201822128444.XU patent/CN209956173U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200117 Termination date: 20211218 |