Universal Joint Bearing Puller With Swinging Cup Alignment

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Traditional methods for replacing bearings in universal joints are labor-intensive and risk structural damage due to manual disassembly, which can lead to energy wastage and potential deformation from improper angle knocking.

Innovation Solution

A joint dismounting tool with a frame body and pulling assembly, featuring a swinging cup member and adjustable arm portions, allows for smooth detachment of bearings by rotating a driving rod to create axial and radial spaces for sliding and swinging, preventing collision and deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If manual knocking method is used to remove bearing, then no special tool is needed, but user energy is wasted and structural damage occurs

Engineering Contradiction:

Improvesimplicity of tool requirementVSAvoiduser energy consumption

Core Design Contradiction:

Ease of manufactureVSLoss of energy

Solution Approach 1:

The patent introduces a pulling assembly as an intermediary tool between the user and the bearing. The pulling assembly includes a pulling head that contacts the bearing and a pulling rod that transmits force, allowing the user to remove the bearing with minimal effort without directly knocking the bearing, thus reducing energy consumption and avoiding structural damage.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the direct manual mechanical knocking action with a mechanical advantage system. The pulling assembly leverages mechanical principles to amplify the user's input force and convert it into the controlled extraction force needed to remove the bearing, substituting the inefficient direct-knocking method with a more efficient mechanical system.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If manual knocking method is used to remove bearing, then no special tool is needed, but bearing may collide and deform structure

Engineering Contradiction:

Improvesimplicity of tool requirementVSAvoidstructural integrity

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The pulling assembly serves as an intermediary that provides controlled force transmission. The pulling head is designed to contact the bearing uniformly, and the pulling rod transmits force along the axial direction, preventing lateral collisions that could deform the bearing or surrounding structure while still achieving bearing removal.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Instead of applying force directly to knock the bearing out (which risks misalignment and collision), the pulling assembly applies force in reverse - pulling the bearing out along its axial direction from the opposite side of the impact point, thereby avoiding deformation risks while maintaining structural integrity.

Inventive Principle:

Principle #13The other way round (Inversion)

3Loss of energy

If pulling assembly is used to remove bearing, then user energy is reduced, but device structure becomes complex

Engineering Contradiction:

Improveuser energy consumptionVSAvoidstructure complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The pulling assembly is segmented into distinct functional components: a pulling head for contacting the bearing, a pulling rod for force transmission, and a frame body for structural support. This segmentation allows each component to be optimized for its specific function while keeping the overall structure manageable and not excessively complex.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pulling assembly is designed with universal applicability - the pulling head can accommodate different bearing types, and the frame body with adjustable arm portions can adapt to various bearing positions and angles. This multi-functionality reduces the need for multiple specialized tools, justifying the moderate increase in structure complexity by providing broad utility.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Ease of operation

If bearing is knocked at inappropriate angle, then no special technique is needed, but unexpected collision deforms interior structure

Engineering Contradiction:

Improvesimplicity of operation techniqueVSAvoidstructural integrity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The pulling assembly inverts the traditional knocking approach by pulling the bearing out axially from the opposite direction rather than knocking it out laterally. This inversion ensures force is applied along the bearing's natural extraction path, preventing misalignment and collision with interior structures while maintaining operational simplicity.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent substitutes the uncontrolled manual knocking action with a controlled mechanical pulling system. The pulling rod and pulling head combination ensures force is applied uniformly and axially, replacing the unpredictable angular knocking with a precise, alignment-free mechanical extraction process that protects structural integrity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11472010B2Joint dismounting tool

Publication Date: 2022.10.18 SHIFUKANG IND CO LTD

AI summary

A joint dismounting tool is provided, including a frame body and a pulling assembly. The frame body includes a base portion and two arm portions, and the two arm portions are disposed on the base portion. The pulling assembly includes a driving rod and a cup member, the driving rod is movably disposed on the base portion, the cup member is connected to the driving rod and swingable relative to the axis, and the cup member is between the two arm portions.