Adjustable Bicycle Rack Structure for Mixed Wheel Diameters
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Solution Overview
Problem
Existing bicycle stands are unstable and cannot securely accommodate bicycles with different wheel sizes, leading to potential tipping and instability, especially indoors, and often require specific tire dimensions for secure holding.
Innovation Solution
A bicycle stand system with a channel-shaped recess and a U-shaped support device that can be repositioned and fixed to various points on the stand body, allowing it to accommodate bicycles with varying wheel diameters, and includes features like bores, adjustable feet, and a locking device for stability and theft protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the stand base is enlarged to improve stability, then the stability of the stand is improved, but the maneuverability and space required for setup deteriorate
Solution Approach 1:
The stand is divided into a base unit and a separate support arm assembly. The support arm can be detached and repositioned independently, allowing the base to remain compact for easy maneuverability while the extended support arm provides stability when in use.
Solution Approach 2:
The support arm is designed to be adjustable and repositionable to different locations on the base. This dynamic configuration allows the stand to adapt its stability characteristics based on the bicycle wheel size and position, providing optimal stability without requiring a permanently large base.
2Stability of the object's composition
If the stand is designed for specific tire dimensions, then the stability for that specific type is improved, but the adaptability to different bicycle types deteriorates
Solution Approach 1:
The base is designed with multiple predetermined locations that can accommodate support arms of different lengths and configurations. This universal design allows the same stand to stably support various bicycle types including road bikes, mountain bikes, and children's bikes by simply repositioning the support arm.
Solution Approach 2:
The support arm assembly can be repositioned to different predetermined locations on the base and adjusted to different angles. This dynamic adjustability enables the stand to adapt to different wheel diameters and tire widths, providing stable support for diverse bicycle types without requiring multiple specialized stands.
3Ease of manufacture
If the support device is fixed in position, then the manufacturing simplicity is improved, but the adaptability to different wheel diameters deteriorates
Solution Approach 1:
The support device is segmented into a base unit with multiple mounting locations and a separate support arm assembly. This segmentation allows the base to be manufactured with simple predetermined locations, while the support arm can be independently manufactured and then attached to different locations based on the required wheel diameter accommodation.
4Ease of operation
If the stand is not firmly attached to the ground, then the ease of installation is improved, but the stability deteriorates
Solution Approach 1:
The base is designed with a wide, flat bottom surface that provides a large contact area with the ground, creating inherent stability through geometry rather than attachment. This preliminary design feature allows the stand to be easily installed without ground attachment while maintaining stability through its extended base footprint.
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a bicycle stand system (1) for receiving a bicycle in a parked position. A stand body (3) of the bicycle stand system (1) has an annular recess (5) on a stand body (3) upper face (4) facing opposite the standing surface. The longitudinal axis (6) of the recess (5) is oriented parallel to the longitudinal axis (7) of the stand body (3). A bicycle wheel (2) which is oriented parallel to the longitudinal axis can be at least partly received in the recess (5). The bicycle stand system (1) has a bracket-shaped support device (9) with two bracket limbs (10), and the support device (9) is secured to the stand body (3) by means of the ends (11) of the bracket limbs (10). In a parked position of the bicycle, the wheel (2) can be supported by at least one bracket limb (10) such that the bicycle can be placed within the bicycle stand system (1) in a substantially upright placement position. The stand body (3) has multiple securing sections (12) which are arranged at a distance to the longitudinal axis (6) of the recess and which are mutually spaced in the longitudinal direction of the stand body (3). The bracket-shaped support device (9) can be releasably secured to the ends (11) of the bracket limbs and is thus movably secured to two respective opposing securing sections. In this manner, bicycle wheels with different diameters can be placed within the bicycle stand system (1).