Bicycle Rear Stand Mounting Head Torsion-Proof Design
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Solution Overview
Problem
Existing bicycle rear stands are prone to twisting due to non-positive connections, which can lead to instability during support or when the bicycle is tilted, and often have visible fastening elements that can cause issues during off-road use.
Innovation Solution
A rear stand design featuring a mounting head with a large, flat contact surface connected to the dropout, utilizing a screw connection with internal threads and pin-like projections for a torsion-proof and mechanically rigid attachment, minimizing external fastening elements for improved stability and reduced visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a non-positive connection is used to attach the support head to the bicycle frame, then the device complexity is reduced, but the reliability deteriorates due to twisting and loosening risks
Solution Approach 1:
The mounting head is divided into multiple functional elements: a clamp body for gripping the cylindrical section, a support flange for additional contact, and separate fastening elements (screws/nuts) for securing. This segmentation allows each element to perform its specific function optimally while maintaining overall reliability without excessive complexity.
Solution Approach 2:
The patent combines multiple contact surfaces (the clamp body gripping the cylindrical section and the support flange contacting the lower edge) into a single mounting head assembly. This merging creates a multi-point connection that distributes loads and prevents twisting while maintaining reasonable device complexity.
2Reliability
If a soldered connection with a rectangular plate fastening element is used, then the reliability improves by preventing twisting, but the ease of operation deteriorates due to non-detachable fastening
Solution Approach 1:
The fastening system transitions from a static soldered connection to a dynamic mechanical fastening system using screws or nuts. This allows the connection to be securely fixed during use (providing reliability) while enabling easy detachment when needed (improving ease of operation). The mechanical threads provide controlled adjustability and reversibility.
3Reliability
If multiple visible fastening elements are used to ensure stable connection, then the reliability improves, but the object-generated harmful factors worsen due to soiling and objects being caught
Solution Approach 1:
The fastening elements (screws, nuts, or other securing components) are strategically positioned and designed to be minimally visible from the outside. The mounting head structure is configured so that fastening elements are either hidden within the clamp body or positioned in locations where they do not protrude significantly, thereby reducing soiling and snagging risks while maintaining connection stability.
Solution Approach 2:
The mounting head is designed with differentiated local qualities: the external surfaces that contact the environment are smooth and minimized to reduce soiling, while the internal structure contains robust fastening elements for reliability. The support flange provides additional contact area without requiring additional external fastening elements.
Data Source
AI summary
The two-wheeler has a rear kickstand (10) which comprises a mounting head (20) connected with the two-wheeler and a rod-shaped support (12) mounted in the mounting head and pivotable around a pivot axis (11). The mounting head is detachably connected with a rear section of the two-wheeler. The connection between the rear kickstand and rear section of the two-wheeler comprises two contact surfaces. The two contact surfaces lie against each other between the rear kickstand and the rear area of the two-wheeler. One of the contact surfaces lie in a plane which runs perpendicular to horizontal. An independent claim is included for a rear kickstand-supporting device for a two-wheeler.