Bicycle Handlebar Clamp Using Overmolded Plastic and Metal Insert
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Solution Overview
Problem
Existing bicycle handlebar clamps are costly due to the need for metal components, and there is a need for a more cost-effective solution that maintains reliable clamping force.
Innovation Solution
A bicycle handlebar clamp design featuring a ring segment with integrated plastic projections and a metal retaining element, where the retaining element is overmolded within the projections, allowing for a screw to reduce the slot width for clamping, and a plastic material is used for the clamp body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal components are used for the bicycle handlebar clamp, then reliable clamping force is achieved, but manufacturing cost increases
Solution Approach 1:
The bicycle handlebar clamp combines plastic material for the clamp body with a metal retaining element (such as a metal insert or threaded insert) integrated into the plastic structure. This composite construction allows the majority of the component to be manufactured from inexpensive plastic while incorporating metal only where structurally necessary to provide reliable clamping force and thread engagement, thereby resolving the contradiction between cost and reliability.
2Ease of manufacture
If the clamp body is made from plastic material, then manufacturing cost is reduced, but clamping reliability may be compromised
Solution Approach 1:
The clamp body is manufactured from plastic material throughout most of its structure, providing cost-effective manufacturing. However, localized metal reinforcement elements are integrated into specific critical areas where high strength and reliability are required, such as the clamping surfaces and thread engagement zones. This local quality approach ensures that plastic is used where cost reduction is prioritized while metal provides strength where reliability is critical.
3Device complexity
If an integrated retaining element design is used, then device complexity is reduced and manufacturing is simplified, but assembly precision requirements increase
Solution Approach 1:
The retaining element is integrated directly into the plastic clamp body through processes such as injection molding with embedded metal inserts or overmolding. This merging of components reduces the total number of separate parts and simplifies assembly, as the metal retaining element becomes an inherent part of the plastic clamp structure rather than a separate component requiring additional assembly steps.
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 design enables a cost-effective handlebar clamp with reliable clamping force, utilizing plastic for the clamp body and a metal retaining element for secure fixation, reducing manufacturing costs without compromising performance.
Implementation Method 1
the retaining element is overmolded within the projections
Data Source
Figure 1~2
Figure 3
AI summary
A bicycle handlebar grip clip for fixing a bicycle handlebar grip to a handlebar has an annular segment element (10) which in the mounted state partially surrounds more particularly an inner sleeve of a bicycle handlebar grip. The annular segment element (10) has two projections (12, 14) for receiving a clamping device (18, 20). Between the two projections (12, 14), a slit (26) is formed, the width of which can be reduced with the aid of the clamping device (18, 20). The clamping device (18, 20) has a clamping element (20), more particularly designed as a screw, which interacts with a retaining element (18), which is more particularly designed as a threaded sleeve. The retaining element (18) is arranged preferably completely within the projection (12), wherein the projection (12) is preferably manufactured as a plastic injection-moulded element and the retaining element (20) is overmoulded during manufacturing for fixing in the projection (12).