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Wheelchair three-gear gearbox

A technology of gearbox and wheelchair, applied in the direction of gear transmission, belt/chain/gear, patient's chair or special means of transportation, etc., can solve the problems of users being trapped, chain drop, etc., to reduce implementation time and easy to operate. , the effect of low failure rate

Active Publication Date: 2018-06-29
国家康复辅具研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it ignores a common and crucial factor, that is, the problem of chain dropping. Most users are elderly and physically disabled. Once chain hanging occurs, users can only be trapped without external assistance.

Method used

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  • Wheelchair three-gear gearbox
  • Wheelchair three-gear gearbox
  • Wheelchair three-gear gearbox

Examples

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

[0023] Example. A three-speed gearbox for hand-pushed wheelchairs, the structure of which is as follows: Figures 1 to 3 As shown: it includes a fixed shaft 12 on which a wheel output gear 10 is fixed; a plurality of inner planetary gears 9 engaged with the wheel output gear 10 are evenly distributed outside the outer wheel output gear 10, and each inner planetary gear 9 is meshed with a first Outer planetary gears 7.1, all outer planetary gears 7 are meshed in the same wheel input gear 11; the inner planetary gears 9 and the first outer planetary gears 7.1 are arranged on the same planetary gear carrier 8; the planetary gear carrier 8 The first bearing 13.1 is rotationally connected with the fixed shaft 12; the planet carrier 8 is provided with a shaft sleeve 8.1 on the side away from the wheel ou...

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PUM

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Abstract

The invention discloses a wheelchair three-gear gearbox. The wheelchair three-gear gearbox comprises a fixed shaft (12); a wheel output gear (10) is fixed on the fixed shaft (12); multiple internal planet gears (9) engaged with the wheel output gear (10) are uniformly distributed out of the wheel output gear (10); the outer sides of all the internal planet gears (9) are engaged with first externalplanet gears (7.1); all the external planet gears (7.1) are engaged in the same wheel input gear (11); a shaft sleeve (8.1) is arranged on the side, far form the wheel output gear (10), of a planet wheel frame (8); the shaft sleeve (8.1) is rotationally connected with the fixed shaft (12) through a second bearing (13.2); from the side, near the wheel output gear (10), of the shaft sleeve (8.1), asecond-gear frame (6), a first-gear frame (4) and a third-gear frame (5) are arranged in sequence; and a transmission (2) is arranged on the first-gear frame (4). The wheelchair three-gear gearbox can adjust the output efficiency of a wheelchair to improve the wheelchair use maneuverability and autonomy, is stable and convenient to adjust the speed, and is not easy to break down.

Description

technical field [0001] The invention relates to a three-speed gearbox for a hand-push wheelchair, which belongs to the technical field of variable-speed hand-push wheelchairs. Background technique [0002] Wheelchairs are a basic means of transportation in the elderly and disabled service system. Variable speed wheelchairs currently on the market mainly include two categories: hand push wheelchairs and electric wheelchairs. At this stage, the development of electric wheelchairs in my country has certain limitations due to the constraints of economic development level, maintenance, and carrying aspects. Hand-push wheelchairs have always been the first choice of consumers because of their advantages such as firm structure, easy maintenance, low price, and easy portability. It should be noted that hand-pushed wheelchairs mainly rely on manpower to move forward, requiring users to have good upper limb control ability. However, the physical functions of the elderly and physica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/44A61G5/10A61G5/02
CPCA61G5/02A61G5/1032F16H3/44
Inventor 储照伟栾会芹王振泽樊瑜波姚杰冯成龙郭俊超闫和平苏宏伦
Owner 国家康复辅具研究中心
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