Toothed Belt Fixing Element for Bracket Rotation
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Solution Overview
Problem
Existing toothed belt systems face challenges in achieving precise and simple positional fixation of transport brackets, often requiring multiple fixing elements and compromising on thread length and support, which complicates the assembly and affects the belt's running properties.
Innovation Solution
A toothed belt design featuring a single fixing element with web-shaped connecting sections that extend transversely to the transport direction, allowing for rotational fixation and simplified assembly, while maintaining the belt's geometry and running properties, and avoiding damage to the belt body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single fixing element is used with two fastening sections, then the assembly is simplified and production is easier, but the connection rigidity and stability may be insufficient
Solution Approach 1:
The fixing element is segmented into two separate fastening sections (first and second fastening sections) that are spaced apart from each other. These sections are inserted into corresponding recesses in the toothed belt, providing distributed fixation points that enhance connection rigidity while maintaining assembly simplicity through the unified fixing element design.
Solution Approach 2:
Two fastening functions are merged into a single fixing element by providing both a first fastening section and a second fastening section on the same component. This allows the transport bracket to be rotationally fixed to the toothed belt using one fixing element instead of two separate elements, simplifying assembly while achieving stable fixation through multiple engagement points.
2Stability of the object's composition
If the connecting section extends transversely to the transport direction, then the connection rigidity is increased and oscillation is reduced, but the belt geometry and running properties may be compromised
Solution Approach 1:
The connecting section is designed with specific geometric characteristics - it extends transversely to the transport direction to provide rigidity and reduce oscillation, but its height is limited to not protrude beyond the tooth head level. This local geometric optimization ensures that the transverse extension provides stabilizing effect without interfering with the meshing of gear wheels and maintaining normal belt running properties.
3Manufacturing precision
If the fastening sections extend through the tooth into the belt body, then the fixation is more secure, but the belt body may be damaged or load cords may be compromised
Solution Approach 1:
Recesses are pre-formed in the toothed belt at predetermined locations on the tooth heads, extending from the outer surface through the tooth head but stopping before damaging the belt body core and load cords. The fastening sections of the fixing element are designed to fit into these pre-prepared recesses, achieving precise and secure fixation without causing harmful effects to the belt structure.
4Strength
If a nut and screw system is used for fixation, then the connection is secure, but the positioning precision is reduced due to small thread length and lack of support
Solution Approach 1:
The traditional nut and screw mechanical fastening system is replaced with a fixing element that has fastening sections inserted into recesses in the toothed belt. This substitution provides more precise positioning because the fixed geometry of the recesses and fastening sections ensures accurate location, while still achieving secure connection through the engagement of the fastening sections in the recesses.
Data Source
Figure 1~2
Figure 3
AI summary
The toothed belt (1) has a belt body and multiple teeth extending in transportation direction, which are arranged at a distance to each other arranged and transverse to a transportation direction. A fixing element (5) is provided, which has two attachment sections (8) arranged at a distance to each other and a connecting section (9) connecting the attachment sections.