Bicycle Handlebar Stem Damping With Adjustable Shock Absorption
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Solution Overview
Problem
Conventional bicycle handlebars lack shock-absorbing functionality, leading to vibrations being transmitted from the front wheel to the handlebar, causing discomfort and affecting riding comfort and safety, especially on uneven roads.
Innovation Solution
A handlebar shock-absorbing device with a shock-absorbing member and adjustment mechanism, comprising an extension member, threaded hole, and adjustment member, which absorbs vibrations and allows for adjustable damping to enhance comfort and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional stem tube is used to connect the handlebar and front fork tube, then the structure is simple and easy to manufacture, but vibration from the front wheel is transmitted to the handlebar, causing rider discomfort and affecting handling safety
Solution Approach 1:
The patent introduces a shock-absorbing member as an intermediary element between the handlebar holder and the stem base. This mediator component absorbs vibrations before they reach the handlebar, while maintaining the overall structural simplicity through modular design with extension members that integrate into the existing connection architecture.
Solution Approach 2:
The shock-absorbing member is nested within the handlebar holder assembly, with extension members extending from the pivoting portion to create accommodation spaces. This nesting approach allows the shock-absorbing functionality to be integrated within the existing structural envelope without significantly increasing external dimensions or complexity.
2Object-affected harmful factors
If no shock-absorbing mechanism is provided, then the device complexity is low, but the riding comfort deteriorates on uneven roads due to direct vibration transmission
Solution Approach 1:
The shock-absorbing member is pre-installed within the handlebar holder assembly, providing cushioning capability before vibrations occur. The extension members create accommodation spaces that house the shock-absorbing components, ensuring they are positioned to immediately absorb shocks from the front wheel through the stem base connection.
Solution Approach 2:
The patent applies shock-absorbing functionality locally at the critical connection point between the stem base and handlebar holder, rather than throughout the entire bicycle structure. The extension members are strategically positioned to target vibration transmission paths, providing localized comfort improvement without system-wide complexity.
3Adaptability or versatility
If the shock-absorbing member is fixed in position, then the structure is simple, but the shock absorption effect cannot be adjusted for different road conditions
Solution Approach 1:
The patent incorporates an adjustment member with a threaded portion that enables dynamic repositioning of the shock-absorbing member within the accommodation space. This dynamic adjustment capability allows the shock absorption characteristics to be modified for different road conditions, while the threaded mechanism maintains structural simplicity through standard fastening principles.
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
The device effectively reduces handlebar vibrations, enhancing riding comfort and safety by damping shock impulses and allowing for adjustable shock absorption, thereby improving the overall riding experience.
Implementation Method 1
the bicycle will vibrate due to the unevenness of the ground. The vibration on the front wheel is easily transmitted to the handlebar via the front fork tube and the stem tube
Implementation Method 2
the main body of the handlebar holder presses against the shock-absorbing member to buffer and absorb the vibration force
Data Source
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AI summary
In the present invention, the bicycle handlebar (11) is connected to a front fork tube (12) via a stem tube, and the stem tube includes a stem base (2) and a handlebar holder (3). The handlebar holder is provided with a pair of clamping ears (31) for pivotal connection to a pivoting portion (21) of the stem base via a pivoting assembly (4). The inventive shock-absorbing device comprises at least one extension member (5), at least one shock-absorbing member (6), and an adjustment member (7). The shock-absorbing member is mounted in an accommodation space (51) formed between a pressure-contact portion and the main body (33) of the handlebar holder. The adjustment member includes a threaded portion (71) and a rod body (72) integrally protruding from the threaded portion, wherein the threaded portion is threaded into a threaded hole (52), and the rod body is sleeved within the shock-absorbing member, thereby positioning the shock-absorbing member between the main body and the threaded portion. When the user rides the bicycle over uneven terrain and the front fork tube moves vertically due to vibration, the main body of the handlebar holder presses against the shock-absorbing member, thereby buffering and absorbing the vibration force. The adjustment member can be used to adjust the strain level of the shock-absorbing member to achieve different shock-absorbing effects.