Clutch type electric bicycle chain wheel driving mechanism

A technology of electric bicycle and sprocket drive, which is applied in the direction of rider drive, vehicle parts, vehicle gearbox, etc. It can solve the problems of customer travel safety hazards, low flywheel service life, safety hazards, etc., to increase work stability and The effect of service life, reducing working hours and prolonging service life

Pending Publication Date: 2020-07-14
TIANJIN MEIPAI ELECTRIC TECH CO LTD
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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

Method used

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  • Clutch type electric bicycle chain wheel driving mechanism
  • Clutch type electric bicycle chain wheel driving mechanism
  • Clutch type electric bicycle chain wheel driving mechanism

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] see attached Figure 1-2 , a clutch type electric bicycle sprocket drive mechanism, including axle 1, motor end disc 2, sprocket 3, outer end disc 4 and return spring 5.

[0038] The motor end plate 2 is rotatably mounted on the axle 1, and a ring of teeth 2-1 is provided on the outer end surface of the motor end plate.

[0039] The sprocket 3 is installed on the axle 1, the sprocket 3 is located on the outside of the motor end plate 2, the sprocket 3 and the axle 1 are installed in rotation, and the sprocket 3 and the axle 1 are in clearance sliding fit. It can slide axially along the wheel shaft; a locking column 3-1 is arranged on the opposite side of the sprocket 3 to the motor end plate 2, which is matched with 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 is realized.

[0040] The outer end d...

Example Embodiment

[0049] Embodiment 2

[0050] The operating method of the clutch-type electric bicycle sprocket drive mechanism is as follows:

[0051]When the rider rides forward, the chain drives the sprocket to run forward. When the sprocket runs forward, the pawl on the outer end disc will drive the sprocket to approach the motor end disc, so that the locking column on the sprocket enters the motor end. Between the teeth of the disc, as the sprocket continues to run forward, the locking column enters the root of the tooth under the self-guided action of the teeth. attached Figure 5 ), does not affect the continued operation of the subsequent sprocket, and then the sprocket drives the entire motor wheel to run, and the car body moves forward.

[0052] When the rider stops riding, the sprocket moves to the outside under the action of the return spring, and disengages from the transmission engagement with the teeth of the motor end plate. At this time, the operation of the motor wheel will...

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PUM

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Abstract

The invention discloses a clutch type electric bicycle chain wheel driving mechanism. The driving mechanism comprises a wheel shaft, a motor end disc, a chain wheel, an outer end disc and a reset spring, wherein the outer end disc, the chain wheel and the motor end disc are sequentially installed on the wheel shaft from outside to inside, a circle of teeth are arranged on an outer end surface of the motor end disc, the chain wheel and the wheel shaft are installed in a rotating mode, are in clearance sliding fit and can slide in the axial direction of the wheel shaft, locking columns matched with teeth of the motor end disc are arranged on one surface, opposite to the motor end disc, of the chain wheel, a ratchet pawl mechanism used for driving the chain wheel to get close to the motor enddisc is arranged between the chain wheel and the outer end disc, and a reset spring is installed between the chain wheel and the motor end disc and provides restoring force for the chain wheel to disengage from the motor end disc. The driving mechanism is advantaged in that the chain wheel is only in meshed transmission with the motor wheel in a riding state, so the working time of the chain wheel is greatly shortened, the service life of the chain wheel is prolonged, moreover, running noise of the chain wheel is reduced, and the follow-up rotation condition is avoided.

Description

technical field [0001] The invention belongs to the technical field of electric bicycles, in particular to a clutch type electric bicycle sprocket drive mechanism. Background technique [0002] See attached Figure 6 and 7 , 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 the motor wheel...

Claims

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Application Information

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IPC IPC(8): B62M6/60B62M9/10
CPCB62M6/60B62M9/10
Inventor 朱庆华
Owner TIANJIN MEIPAI ELECTRIC TECH CO LTD
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