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Motor-free wheel mechanism driven by shape memory alloy

A memory alloy and motor-less technology, which is applied to mechanisms that generate mechanical power, machines/engines, mechanical equipment, etc., can solve problems such as large volume, small volume, and complex structure of the driving mechanism, so as to reduce complexity, overcome space and effect of weight

Active Publication Date: 2008-06-18
THE HONG KONG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the problem of complex structure and large volume of the shape memory alloy driving mechanism in the prior art, and to use the characteristics of the shape memory alloy to construct a driving mechanism with a smaller overall volume and a simpler structure

Method used

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  • Motor-free wheel mechanism driven by shape memory alloy
  • Motor-free wheel mechanism driven by shape memory alloy
  • Motor-free wheel mechanism driven by shape memory alloy

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Embodiment Construction

[0035] FIG. 1A shows a schematic perspective view of the motorless wheel mechanism of the present invention; FIG. 1B shows an exploded schematic view of the main components of the motorless wheel mechanism of the present invention. Figure 2A is a perspective view of the motorless wheel mechanism of the present invention in its initial state, with one side plate and one driven wheel removed for clarity. Figure 2B is a perspective view of the motorless wheel mechanism of the present invention in its initial state, with one side plate, one driven wheel and end plates removed for clarity. In the figure, the direction to the left is the rear, and the direction to the right is the front.

[0036] The motorless wheel mechanism mainly includes three parts: a main body frame, a rotating part and a moving part. Wherein, the main frame forms an accommodating space, which is composed of two side plates 1, an end plate 10 and a support frame 14, and two driven wheels 7 are also arranged o...

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Abstract

The invention relates to a non-motor wheel which can be driven by shape memory alloy, wherein the invention comprises: a main frame forming one containing space; a rotation part at one side of main frame to rotate relative to the main frame; ratchet (3); and moving part inside the containing space which comprises pushing rod (13) and two SAM actuators (11, 12); the pushing rod (13) has one main body, and upper and lower arms (13A, 13B) longitudinally extending along front and back directions; the free ends of upper and lower arms are arranged with claw and stop claw matched with ratchet (3); two SAM actuators are independently arranged inside two spaces formed by main frame and the main body of pushing rod (13), to move the pushing rod (13) via alternatively powered. The invention has small volume and simple structure.

Description

technical field [0001] The invention relates to a driving mechanism of a micro propulsion device, in particular to a motorless wheel mechanism driven by a shape memory alloy. Background technique [0002] With the rapid development of modern industry, especially micro-robots and computer technology, the demand for driving mechanisms with small size, light weight and high power can be said to be increasing day by day. However, traditional propulsion devices mainly drive the wheels to rotate through motors and gearboxes. The traditional motor drive mechanism has a low power-to-weight ratio and must be installed far away from the driving point. After the motor runs at high speed, it needs a variable speed gear to change the speed, which makes the transmission system complex and bulky. In addition, the use of conventional electric motors limits the size of the overall product. [0003] At present, in the fields of industry, petroleum, chemical industry, and medical treatment, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03G7/06
Inventor 刘建德杨继志黄家强何允贤
Owner THE HONG KONG POLYTECHNIC UNIV
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