Brake Caliper Piston Compression Tool for Damage-Free Resetting
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Solution Overview
Problem
The existing methods for resetting the piston of an automobile brake caliper during brake pad replacement are labor-intensive and prone to damaging the caliper, as they often require manual prying which can cause scratches or deformation.
Innovation Solution
A compression tool with an outer and inner cylinder, a threaded adjustment mechanism, and integrated pressure plates that allow for simultaneous and controlled resetting of pistons, reducing the risk of damage and labor burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pry bar is used to compress the piston, then the piston can be pushed back to its original position, but the brake caliper or piston may be scratched or deformed
Solution Approach 1:
The patent introduces a compression tool with pressure plates as an intermediary device between the operator and the piston. The pressure plates contact the piston evenly through the caliper body, avoiding direct contact with the caliper's external surfaces. This intermediary mechanism distributes the compressive force internally, preventing scratches and deformation of the caliper while effectively resetting the piston.
2Ease of operation
If a pry bar is used to compress the piston, then the piston can be pushed back, but the labor intensity of the worker increases
Solution Approach 1:
The compression tool integrates multiple functional elements into a single device: the outer cylinder and inner cylinder are combined with pressure plates and an adjustment mechanism. This merged structure allows the operator to reset both pistons simultaneously through a single adjustment action, significantly reducing labor intensity compared to using a pry bar for each piston individually.
3Stability of the object's composition
If the piston is not pressed back, then the caliper structure remains intact, but a new brake pad cannot be mounted because the brake pad is too thick
Solution Approach 1:
The compression tool provides dynamic control over the piston position through its adjustment mechanism. The threaded rod and locking nut allow the operator to precisely adjust the distance between pressure plates and apply controlled compressive force to push the piston back. This dynamic adjustment capability enables the piston to be reset to the correct position for new brake pad installation while maintaining caliper structure integrity throughout the process.
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 tool enables safe and efficient resetting of all pistons at once, reducing the risk of damage and labor intensity, while ensuring proper alignment and protection of the brake caliper components.
Implementation Method 1
an internal thread is arranged on the inner surface of the outer cylinder; and an inner side of the internal thread is in threaded connection with an adjustment mechanism that is in contact with the inner cylinder
Implementation Method 2
a surface of the threaded adjustment rod is in threaded connection with a locking nut that is in contact with the inner cylinder
Implementation Method 3
an inner side of the threaded hole is in threaded connection with a positioning bolt; two ends of the positioning bolt penetrate through the threaded hole; and one end of the positioning bolt is inserted into the rectangular groove
Implementation Method 4
an outer surface of the outer cylinder is fixedly connected with a first pressure plate; an outer surface of the inner cylinder is fixedly connected with a second pressure plate arranged outside the outer cylinder
Data Source
AI summary
The present disclosure relates to a compression tool for a piston of an automobile brake caliper, and belongs to the technical field of automobile maintenance. The compression tool for the piston of the automobile brake caliper includes: an outer cylinder and an inner cylinder; the inner cylinder is slidably connected to an inner surface of the outer cylinder; an outer surface of the outer cylinder is fixedly connected with a first pressure plate; an outer surface of the inner cylinder is fixedly connected with a second pressure plate arranged outside the outer cylinder; and a user can simultaneously drive the first pressure plate and the second pressure plate to flatly and straightly push a raised piston to be reset through an adjustment mechanism.