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Electric bicycle rear suspension system with worm and gear mechanism for regulating wheelbase

A technology of electric scooter and worm gear, which is applied in axle suspension, bicycle accessories, transportation and packaging, etc. It can solve the problems of passenger discomfort, vibration and shock of worm gear reducer, and influence on the service life of the reducer, and achieve the goal of using The effects of life extension, reliable self-locking safety, and good vibration damping performance

Inactive Publication Date: 2009-04-15
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vibration generated when this electric scooter is running on a rough road will eventually be transmitted step by step through tires, swing arms, output shafts, etc., causing serious vibration impact on the worm gear reducer. Affect the service life of the reducer
At the same time, this vibration will also be transmitted to the occupant, making the occupant feel very uncomfortable.

Method used

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  • Electric bicycle rear suspension system with worm and gear mechanism for regulating wheelbase
  • Electric bicycle rear suspension system with worm and gear mechanism for regulating wheelbase
  • Electric bicycle rear suspension system with worm and gear mechanism for regulating wheelbase

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1 (with reference to Fig. 4,5,7,8,9):

[0022]This example is based on the general description part, and is an example for further improving the vibration reduction and vibration absorption performance of the present invention. In this example, in the end cover hole of the end cover 19, a sleeve 33 sleeved on the output shaft 31 is respectively installed, and the part of the sleeve 33 near the extended end of the output shaft 31 is fixedly sleeved on the output shaft 31 (referring to Fig. 4,7), the other end of this sleeve pipe 33 is sleeved on this output shaft 31 in clearance fit state (referring to Fig. 4,5, 9); There is a state of clearance fit between them - in this embodiment, the middle section of the sleeve 33 and the end cover hole clearance fit part of the end cover 19 is provided with an oil storage tank 3' for storing lubricating oil (refer to Figures 4, 5, 7 ). At both ends of the worm wheel 14, a friction disc 12 fixedly sleeved on the corresp...

Embodiment 2

[0026] This example is an example of the fixed connection structure between the swing arm 4 and the output shaft 31 on the basis of the general description or the first embodiment. In this example, the swing arm 4 is fixedly connected to the output shaft 31 through the swing arm sleeve 20 fixedly connected to the swing arm 4, and simultaneously fixedly connected to the outer end surface of the swing arm sleeve 20 and the end of the output shaft 31. The connection plate 10 on the head is realized; the swing arm sleeve 20 is rotatably sleeved on the outer periphery of the end cover hole hub of the end cover 19, and the connection plate 10 has a sleeve on the end of the output shaft 31 The center hole on the center hole and the end of the output shaft 31 are circumferentially limited by a key. Specifically, in this embodiment (referring to Figs. 3 and 4), the swing arm 4 and the swing arm sleeve 20 are welded as one, and the connection plate 10 is fixed on the end surface of the ...

Embodiment 3

[0027] Embodiment 3 (with reference to Fig. 4,6):

[0028] This example is an example of optimization made on the basis of Example 2. In this example, an anti-off groove is arranged on the outer periphery of the hub portion of the end cap hole of the end cap 19, and an anti-off screw 29 whose front end is inserted into the anti-off groove is installed on the swing arm sleeve 20. Originally, the two friction discs (12 and 12') are fixedly set on the sleeve 33, and one end of the sleeve 33 is fixed on the output shaft 31, and the output shaft 31 at each end is not easy to slide out. . The reliability optimization in this example is only done to improve the reliability of the whole system. Obviously, it is also feasible to adopt other anti-off mechanisms.

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Abstract

The invention provides an electric instead-of-walk vehicle rear hanging frame system with a worm wheel and worm rod adjusting the wheel base. In the system, both ends of a worm wheel of a worm wheel and worm rod mechanism are provided with output shafts which are mutually separated, coaxial with the worm wheel and driven by the worm wheel, the output shafts which are extended out of end covers of both ends of a shell of the worm wheel and worm rod mechanism are fixedly connected with an oscillating arm respectively, two rear wheels of the electric instead-of-walk vehicle are respectively arranged on one end of the corresponding oscillating arms, which are away from the output shafts. The two output shafts are elastic twisted rod shafts, which are fixedly connected with both ends of a worm wheel hub hole respectively. The mechanism is also provided with a friction disk, an inertia disk and an oil gap packing piece, and the oil gap packing piece brings the oil gap in which the viscous oil is filled. The system has the advantages of the adjustment of the wheel base between the front and the rear wheels, better damping performance and long service life, and a rider, particularly the elder or the disabled, can feel especially comfortable.

Description

technical field [0001] The invention relates to an electric scooter, in particular to a rear suspension system of the electric scooter whose wheelbase is adjusted by a worm gear. Background technique [0002] As one of the means of transportation, electric scooter has attracted more and more attention due to its environmental protection, simple structure and easy operation. Especially the four-wheel or three-wheel electric scooter with medium and short mileage, low speed, and single-person riding brings great convenience to the daily transportation of the elderly or disabled people. At present, among these electric scooter products, there is a type that can adjust the wheelbase of the front and rear wheels - when it is necessary to turn in a small space, shorten the wheelbase of the front and rear wheels; To prevent front and rear tipping, just lengthen the wheelbase of its front and rear wheels. The application number is 200710078476.7, and the name is called "underframe ...

Claims

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Application Information

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IPC IPC(8): B62K25/00
Inventor 舒红宇傍島重憲
Owner CHONGQING UNIV
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