Hydraulic Brake Device With Elastomer Holder
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Solution Overview
Problem
Conventional rim and disk brakes face inefficiencies in braking force due to play in pivots, uneven wear, and instability, particularly in ultra-light designs, and are limited by heavy components and high costs, with existing hydraulic disk brakes prone to twisting and requiring critical tolerances.
Innovation Solution
A hydraulic brake device featuring a carrier body with integrally molded U-shaped structure and symmetrical hydraulic brake assemblies, utilizing an elastomer with a U-shaped portion and holder for stable, balanced braking force, and a lightweight design with easy maintenance, providing a stable and efficient braking system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional rim brake uses pivotal arms with brake shoes, then braking function is achieved, but braking force efficiency is reduced due to pivot play and non-parallel contact
Solution Approach 1:
The patent replaces the conventional pivotal mechanical arm mechanism with a hydraulic piston-based braking system. The hydraulic cylinder and piston eliminate the need for pivotal joints, thereby removing pivot play and achieving more reliable and efficient brake force application through fluid pressure transmission.
2Ease of operation
If conventional rim brake uses heavy duty return spring for releasing arms, then brake releasing function is achieved, but overall weight increases
Solution Approach 1:
The patent replaces the heavy mechanical return spring system with a hydraulic release mechanism. The hydraulic system uses fluid pressure to both apply and release the brake, eliminating the need for heavy mechanical springs and reducing overall brake assembly weight while maintaining ease of operation.
3Reliability
If conventional hydraulic disk brake uses disk rotor, then stable brake force is provided, but twisting effect occurs on front wheel and manufacturing cost increases
Solution Approach 1:
Instead of using a conventional disk rotor that rotates with the wheel, the patent inverts the approach by using a stationary rim brake surface. The brake shoes are fixed to the wheel rim and press against the stationary brake pads, eliminating the rotational twisting effect while maintaining stable brake force application.
4Manufacturing precision
If conventional disk brake requires critical tolerance on cylinder bore and piston diameter, then braking precision is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent replaces the conventional hydraulic disk brake system with a rim brake system that uses brake shoes pressing against the wheel rim. This substitution eliminates the need for precision-machined cylinders and pistons, significantly reducing manufacturing tolerance requirements while maintaining adequate brake force precision through the natural geometry of the rim and brake shoe contact surfaces.
5Ease of manufacture
If conventional rim brake uses two-piece structure with left and right arms, then brake mounting is achieved, but brake force balance becomes unstable without careful setup
Solution Approach 1:
The patent divides the brake system into independent left and right brake assemblies, each with its own piston and brake shoe. This segmentation allows each side to be independently adjusted and optimized, ensuring balanced brake force application without requiring complex two-piece structures or careful setup procedures.
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 solution achieves stable, efficient, and balanced braking with reduced weight and cost, addressing the inefficiencies and limitations of conventional brakes by providing a high structural strength and easy maintenance, while maintaining a lightweight and balanced braking force.
Implementation Method 1
an elastomer connected to the housing. The elastomer has a U-shaped portion formed therein and a movable portion disposed in a center thereof
Implementation Method 2
a hydraulic cylinder, a piston movably received in the axial direction of the cylinder
Implementation Method 3
each brake shoe forces against the rim to brake
Data Source
AI summary
A hydraulic brake device includes a carrier body. The carrier body is integrally molded. The carrier body has at least one assembling portion disposed thereon for assembling purpose. The carrier body has at least one connecting portion respectively extending from the at least one assembling portion. At least one hydraulic brake assembly movably is mounted on the at least one connecting portion of the carrier body. The carrier body with the at least one brake assembly are adapted to assemble with a bicycle for providing a stable assembling effect, a high structural strength, and lightweight effect.