Adjustable Brake Master Cylinder Lever for Variable Torque Ratio
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Solution Overview
Problem
Existing brake technologies lack the ability to adjust the torque ratio between the input and output force arms, requiring multiple brake pumps for different user needs and grip strengths, and are structurally impractical for customizable braking effects.
Innovation Solution
A brake upper pump with an adjustable force arm mechanism, featuring a pivot mechanism and distance-adjusting mechanism to alter the ratio of input and output force arms, allowing users to adjust torque based on their grip strength and desired braking effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the brake pump uses a fixed force arm structure, then the manufacturing cost is reduced and the structure is simplified, but it cannot adapt to different user grip strengths and braking requirements
Solution Approach 1:
The patent applies the dynamics principle by making the force arm length adjustable rather than fixed. The adjustable force arm mechanism allows the brake pump to change its mechanical characteristics dynamically to suit different user needs, directly resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The patent implements parameter changes by allowing the force arm length parameter to be varied. This enables the same brake pump to provide different mechanical advantages for users with different grip strengths, eliminating the need for multiple customized pumps while maintaining structural feasibility.
2Adaptability or versatility
If multiple customized brake pumps are produced for different user needs, then the adaptability to different users is improved, but the production cost and device complexity increase significantly
Solution Approach 1:
The patent applies universality by designing a single brake pump model that can serve multiple user needs through the adjustable force arm mechanism. This multi-functional design allows one pump to replace what would otherwise require multiple customized pumps, directly reducing production costs while maintaining adaptability.
Solution Approach 2:
The dynamic adjustability of the force arm enables a single universal pump design to accommodate varying user requirements, eliminating the need for mass-producing multiple customized variants and thereby reducing manufacturing complexity and cost.
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
Enables customizable braking experiences by adjusting torque ratios without the need for multiple brake pumps, enhancing user convenience and reducing production costs.
Implementation Method 1
The connection point between the brake pump body and the brake lever is set as the rotation fulcrum position, and the distance between the rotation fulcrum position and the force-generating position of the user's hand-held brake lever forms the input force arm. The distance between the rotation fulcrum position and the thrust output position forms the output moment arm, and the input torque is equal to the output torque.
Implementation Method 2
Torque represents the physical quantity of the rotational effect produced when a force acts on an object. The product of the force and the moment arm is called the moment of the force about the axis of rotation.
Implementation Method 3
The principle is to combine one end of a brake hose with the output end of the internal oil circuit of a brake lever seat, and the other end of the brake hose is combined with a disc brake, which can push a piston in the internal oil circuit by pressing the handle. The lever allows the pressure in the oil circuit to act on the disc brake through the brake oil pipe, thereby forming the operation of the disc brake.
Data Source
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AI summary
A brake upper pump with an adjustable force arm, including a brake pump body, a brake handle, and a piston rod components extending into the brake pump body; The position where the user holds the brake lever is the grip input position, the connection between the brake pump body and the brake lever is the rotation fulcrum position, the connection between the piston rod assembly and the brake lever is the thrust output position; The distance between the rotation fulcrum position and the force-generating point of the user's hand-held brake lever forms the input force arm, and the distance between the rotation fulcrum position and the thrust output position forms the output force arm; A first force arm adjustable mechanism is provided at the rotation fulcrum, and the first force arm adjustable mechanism can change the rotation center of the brake lever relative to the brake pump body.