Tool Connecting Rod Radial Gap Magnetic Assembly
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Solution Overview
Problem
Conventional tool connecting rods face issues with magnetic member damage and inaccurate positioning due to manufacturing tolerances, leading to insufficient magnetic attraction and poor operational stability, resulting in high manufacturing costs.
Innovation Solution
A tool connecting rod design featuring a main body with a driving portion and an assembling portion, including a magnetic mechanism with an elastic member and a first gap between the sleeve member and the magnetic member, allowing radial movement to absorb impacts and accommodate manufacturing tolerances, along with a restriction mechanism for stable assembly and magnetic end portion adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rod body and sleeve have the same diametrical dimension to prevent radial movement, then the structure is simple and stable, but the magnetic member is easily damaged due to impact and manufacturing tolerances cause inaccurate positioning
Solution Approach 1:
The patent introduces a gap between the rod body and sleeve, transforming the rigid fixed structure into a dynamic structure where the magnetic member can move radially. This allows the magnetic member to absorb impact forces and adjust its position, preventing damage while maintaining structural simplicity.
Solution Approach 2:
The patent segments the previously unified rod body-sleeve structure by introducing a gap, separating the magnetic member's positioning function from the overall structural stability. This segmentation allows independent optimization of each component's function.
2Manufacturing precision
If low manufacturing tolerances are requested to ensure accurate positioning of the magnetic member, then the operational stability is improved, but the manufacturing cost increases
Solution Approach 1:
The patent changes the dimensional parameter relationship between the rod body and sleeve by introducing a gap, transforming the problem from requiring precise positioning to allowing tolerance compensation through the gap. This parameter change enables easier manufacturing while maintaining operational stability.
Solution Approach 2:
The patent converts the harmful effect of manufacturing tolerances into a beneficial feature by using the gap to accommodate dimensional variations. The gap transforms what would be positioning errors into a functional tolerance zone that protects the magnetic member.
3Force
If the magnetic member protrudes excessively into the assembling hole, then the magnetic attraction is strong, but the connecting member cannot be sufficiently inserted and operational stability deteriorates
Solution Approach 1:
The patent introduces radial movement capability through the gap, allowing the magnetic member to dynamically adjust its protrusion depth. During operation, the magnetic member can move radially to maintain optimal positioning, ensuring both strong magnetic attraction and sufficient space for the connecting member.
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 enhances durability and manufacturing ease by preventing magnetic member damage and improving magnetic attraction, reducing the influence of manufacturing tolerances and lowering production costs while maintaining operational stability.
Implementation Method 1
an elastic member abutted against and between the main body and the magnetic member
Implementation Method 2
a magnetic member 103 disposed thereon for attracting the connecting member 200
Data Source
AI summary
A tool connecting rod is provided, including: a main body, a sleeve member and a magnetic mechanism. The main body includes a driving portion and an assembling portion opposite to the driving portion, and the assembling portion has an assembling hole extending in an axial direction. The sleeve member is non-rotatably disposed on the assembling portion and includes at least one sleeving hole configured to be connected with a connecting member. The magnetic mechanism is disposed within the assembling hole and includes a magnetic member penetrating into the sleeve member and an elastic member abutted against and between the main body and the magnetic member. In a circumferential direction of the magnetic member, a first gap is defined between the sleeve member and the magnetic member so that the sleeve member and the magnetic member are movable radially relative to each other.