Wedge Motion Transmission for Variable Speed and Direction Ratios
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Solution Overview
Problem
Current motion transmitting devices face challenges in achieving significant downsizing and weight reduction, particularly when requiring different speeds or directions between the input and output ends, due to their complex structures and numerous components.
Innovation Solution
A motion transmitting device composed of sliders and connecting bodies with adjustable inclination angles and guide orientations, allowing for variable displacement and speed ratios between input and output ends, and incorporating a direction conversion mechanism for flexible orientation without increasing component complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional motion transmitting devices use gear trains, cam mechanisms, or link mechanisms to achieve different speeds or directions between input and output ends, then the speed and direction requirements are met, but the device size and weight increase due to complex structures and numerous components
Solution Approach 1:
The patent changes the geometric parameters of the wedge-shaped component, specifically the inclination angle of the inclined surface, to achieve different speed and direction ratios between input and output. By adjusting this single parameter, the device can adapt to various motion requirements without changing the overall structure or adding components, thus avoiding weight increase while maintaining versatility
Solution Approach 2:
The patent concentrates the motion transformation function into a single localized wedge-shaped component with a specifically designed inclined surface, rather than distributing the function across multiple gears, cams, or links. This localization of function reduces the number of components and overall device weight while maintaining the capability to achieve different speed and direction ratios through parameter adjustment
2Adaptability or versatility
If conventional motion transmitting devices are designed to accommodate different speeds or directions between input and output ends, then the functional requirements are satisfied, but the device complexity increases making downsizing difficult
Solution Approach 1:
The patent merges the functions of multiple conventional components (gears, cams, or links) into a single integrated wedge-shaped component. The inclined surface of the wedge combines the speed transformation and direction conversion functions that would traditionally require separate mechanisms, thereby simplifying the overall structure and reducing component count while maintaining full motion transformation capability
Solution Approach 2:
The patent uses parameter adjustment (specifically the inclination angle of the wedge's inclined surface) to provide adaptability for different motion requirements without increasing structural complexity. This allows a single simple structure to perform multiple functions by changing geometric parameters rather than adding complex mechanisms
3Volume of moving object
If conventional motion transmitting devices use multiple components to achieve downsizing, then the device size is reduced, but the weight reduction is limited due to the numerous component parts
Solution Approach 1:
The patent combines multiple components into a single wedge-shaped component, which simultaneously achieves volume reduction and weight reduction. By eliminating the need for multiple separate parts (gears, cams, links, bearings), the device becomes both more compact and lighter, overcoming the limitation of conventional downsized devices that still contained numerous small components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy downsizing and weight reduction while maintaining functionality, allowing for various forms and applications, such as in robots and machine tools, with the ability to adjust displacement and speed ratios and direction conversion without increasing size or weight.
Implementation Method 1
a connecting body (31) movable along a connecting body guide (16) provided in the holder (11)
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A motion transmitting device comprising: a slider movable along a slider guide; and a connecting body movable along a connecting body guide, wherein the slider and the connecting body are disposed in contact with each other, each of the slider and the connecting body has a contact surface that is slidable, and the amount of displacement and/or the speed of displacement of an output end relative to an input end can be reduced or can be made equal to each other or increased through setting of the angle of a center axis line of the slider guide about a center axis line of the connecting body guide and/or the inclination angle of the contact surface.