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A kind of electric bicycle sprocket clutch driving method

A technology of electric bicycles and driving methods, which is applied in the directions of rider driving, vehicle components, vehicle gearboxes, etc., can solve the problems of customer travel safety hazards, low flywheel service life, and ratchet pawl structure damage, etc., to increase work stability. durability and service life, reduced working hours, and aesthetically pleasing model design

Active Publication Date: 2021-07-30
天津奔豆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The flywheel always runs with the motor wheel, which greatly increases the working time of the flywheel. Since the flywheel has a ratchet and pawl structure to ensure the one-way transmission of riding, the ratchet and pawl structure inside the flywheel is prone to damage, resulting in lower service life
[0004] 2. After the flywheel has worked and aged for a long time, it is prone to crank rotation (when the motor wheel is running, due to the aging friction inside the flywheel, it may drive the outer ring of the flywheel to rotate, and then the outer ring of the flywheel drives the chain to rotate, and the chain drives the crank Follow-up), the crank follow-up will cause the power-assist sensor to send a power-assist signal to the controller. The controller mistakenly thinks that the customer uses the power-assist function, resulting in a speeding car, which brings hidden dangers to the travel safety of the customer.
[0005] 3. After the flywheel has been aging for a long time, when the motor wheel drives the flywheel to run, there will be a lot of noise
[0006] 4. The flywheel is installed on the end plate of the motor through threads, and the flywheel is easy to run back for a long time, which will cause safety hazards

Method used

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  • A kind of electric bicycle sprocket clutch driving method
  • A kind of electric bicycle sprocket clutch driving method
  • A kind of electric bicycle sprocket clutch driving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] See attached Figure 1-2 , a clutch type electric bicycle sprocket drive mechanism, including a wheel shaft 1, a motor end plate 2, a sprocket 3, an outer end plate 4 and a return spring 5.

[0039] The motor end plate 2 is rotatably mounted on the wheel shaft 1, and a ring of teeth 2-1 is arranged on the outer end surface of the motor end plate.

[0040] The sprocket 3 is installed on the wheel shaft 1, and the sprocket 3 is located on the outside of the motor end plate 2. The sprocket 3 and the wheel shaft 1 are installed in rotation, and there is a gap sliding fit between the sprocket 3 and the wheel shaft 1. The sprocket Able to slide axially along the wheel shaft; on the opposite side of the sprocket 3 to the motor end plate 2, there is a locking column 3-1 that matches the teeth 2-1 of the motor end plate, and the locking column can be inserted into the motor end plate Between the teeth, the transmission engagement between the sprocket 3 and the motor end plate 2...

Embodiment 2

[0055] See attached Figure 6-8 , This embodiment differs from Embodiment 1 in that: a cam mechanism m is provided between the sprocket 3 and the outer end plate 4, not a ratchet and pawl mechanism. When the sprocket 3 is running in the forward direction, the cam mechanism drives the sprocket 3 to move towards the motor end plate 2, thereby realizing the transmission engagement of the sprocket 3 and the motor end plate 2.

[0056] Specifically, a cam mechanism m is provided on the inner surface of the outer end plate 4, and the outer end surface of the sprocket 3 has no ratchet but is flat. When the cyclist rides forward, the chain drives the sprocket to rotate forward, and when the sprocket rotates forward, the outer surface of the sprocket 3 drives the cam to support by friction (see attached Figure 7 ), so that the cam drives the sprocket 3 to move along the axle 1 to the direction of the motor end plate 2, so that the locking column on the sprocket enters between the tee...

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PUM

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Abstract

The invention discloses a sprocket clutch driving method for an electric bicycle, which comprises a wheel shaft, a motor end plate, a sprocket, a clutch drive mechanism and a reset mechanism; the sprocket is installed on the wheel shaft and can move axially along the wheel shaft; the motor end plate is installed on the On the wheel shaft, there is a clutchable meshing structure that can cooperate with each other between the motor end plate and the sprocket; the clutch drive mechanism is used to drive the sprocket to move to the motor end plate to engage with it; the reset mechanism is used to drive the sprocket to separate from the motor end In the riding state, the sprocket is driven by the chain to rotate in the forward direction, and the clutch driving mechanism drives the sprocket to move to the end plate of the motor to mesh with it, and then the sprocket drives the end plate of the motor to rotate; in the non-riding state, the reset mechanism drives the chain The wheel disengages from the motor end plate. The sprocket will only mesh with the motor wheel in the riding state, which greatly reduces the working time of the sprocket and prolongs the service life of the sprocket; it also reduces the running noise of the sprocket and avoids the occurrence of co-rotation.

Description

technical field [0001] The invention belongs to the technical field of electric bicycles, and in particular relates to a clutch driving method for an electric bicycle sprocket. Background technique [0002] See attached Figure 9 and 10 , the existing bicycle rear wheel drive structure is that the motor wheel is installed on the rear wheel shaft a, the motor end plate b of the motor wheel is provided with a threaded port b-1 for installing the flywheel (ie sprocket wheel), and the flywheel c is installed through threads The threaded port is fixedly installed with the motor wheel, and there is a ring of teeth on the outer ring of the flywheel, so that the outer ring of the flywheel is connected with the crank wheel through a chain to realize chain transmission, and the inside of the flywheel adopts a ratchet pawl structure to ensure riding The one-way transmission of this flywheel transmission structure has the following problems: [0003] 1. The flywheel always runs with t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M6/60B62M9/10
CPCB62M6/60B62M9/10
Inventor 朱庆华
Owner 天津奔豆科技有限公司