Adjustable Frame Lock Mounting for Diverse Bicycle Geometries
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Solution Overview
Problem
Existing frame locks for bicycles are difficult to attach to bicycles with varying frame geometries and may lack suitable threaded bushings, limiting their flexibility and adaptability.
Innovation Solution
A frame lock design featuring separately mounted fastening sections with displaceable holes and elongated slots, allowing adjustment to fit different frame geometries, and a locking mechanism with a movable locking bar and adjustable locking device for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the frame lock is attached using fixed threaded bushings on the rear stays, then the attachment is secure and stable, but the adaptability to different frame geometries is limited
Solution Approach 1:
The fastening section is designed with movable mounting pieces that can be adjusted along the longitudinal axis of the housing. This dynamic positioning capability allows the frame lock to adapt to different frame geometries while maintaining secure attachment through the locking mechanism.
Solution Approach 2:
The fastening section is divided into separate mounting pieces that can be independently positioned. This segmentation allows each mounting piece to be adjusted to suitable positions on different bicycle frames, enabling adaptation to various frame geometries while maintaining reliable attachment.
2Manufacturing precision
If the frame lock design includes fixed positioning holes for attachment, then the manufacturing precision is high, but the ease of operation for different frame geometries is reduced
Solution Approach 1:
The mounting pieces are designed to be movable along the longitudinal axis, allowing the positioning holes to be adjusted to different locations. This dynamic adjustment capability maintains manufacturing precision while enabling easy operation on various frame geometries.
Solution Approach 2:
The fastening section with adjustable mounting pieces serves multiple functions: it provides precise attachment points for secure mounting while allowing adjustment to accommodate different frame geometries. This universal design enables the same component to work on various bicycle types.
3Device complexity
If the frame lock uses a simple fixed attachment design, then the device complexity is low, but the adaptability to various frame geometries is limited
Solution Approach 1:
The attachment structure is segmented into a housing and separate movable mounting pieces. This segmentation adds adaptability through adjustable positioning while keeping each individual component relatively simple in design, balancing complexity and versatility.
Solution Approach 2:
The mounting pieces are designed with movable capability along the longitudinal axis, adding dynamic adjustment functionality to an otherwise simple attachment structure. This minimal dynamic element provides significant adaptability without substantially increasing overall device complexity.
Data Source
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AI summary
A frame lock (11, 13) for a two-wheeled vehicle comprises a housing (13, 15), a locking device (15, 17) which is received in the housing (13, 15), and a locking bar which is movably mounted on the housing (13, 15) between an open position and a closed position and which can be locked in the closed position by means of the locking device (15, 17). The frame lock (11, 13) has two mounting sections (19) with at least one hole (23, 25, 41) each and is designed to be attached to the two-wheeled vehicle by screwing screws (25) through the holes (21, 23, 41) into threaded bushings provided on the two-wheeled vehicle in a screwing direction.Each of the two fastening sections (19) is designed as a fastening piece (21, 23) separately from the housing (13, 15), in which the respective hole (23, 25, 41) is formed and which is slidably mounted on the housing (13, 15) in a linearly guided direction along a displacement direction.