Linear Guideway Retainer With Elastic Ball-Loading and Oil Reservoir
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Solution Overview
Problem
Conventional linear guideway retainers are prone to damage and deformation when colliding with balls, leading to increased assembly time and costs, and existing hook-based designs require significant force for engagement, causing operational difficulties and risking ball displacement.
Innovation Solution
A retainer with a main body, retaining portions, and hollow portions that allow for elastic deformation to facilitate ball installation and retention, reducing the need for excessive force and preventing damage, while also saving lubricating oil through designed gaps and hollows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the retainer directly collides with the balls during assembly, then the assembly process is simple, but the retainer is easily damaged or deformed
Solution Approach 1:
The patent introduces a cushioning structure between the retainer and the balls to prevent direct collision damage. The cushioning layer absorbs impact forces during assembly, protecting the retainer from deformation while maintaining the simplicity of the assembly process.
Solution Approach 2:
The patent employs an intermediary element (such as a guide structure or cushioning layer) that mediates the interaction between the retainer and balls during assembly. This intermediary facilitates smooth ball installation without requiring direct forceful collision, thereby preventing retainer damage.
2Ease of operation
If two hooks are engaged to facilitate ball installation, then the retainers can be easily assembled, but significant force is required causing operational difficulties
Solution Approach 1:
The patent transforms the static hook engagement mechanism into a dynamic one where the retaining portion can elastically deform during ball installation. This dynamic behavior allows the structure to adapt to the installation process, reducing the peak force required while maintaining ease of operation.
Solution Approach 2:
The patent changes the physical state of the retaining portion from rigid to elastically deformable. This parameter change allows the structure to temporarily yield during ball installation, reducing the force needed, and then restore its original shape to maintain retention functionality.
3Force
If the retaining portion is made thinner to reduce deformation force, then easier operation is achieved, but structural strength becomes weak leading to easy damage
Solution Approach 1:
The patent employs a thin-walled hollow portion structure that provides flexibility for easy deformation during ball installation. The hollow cylindrical structure maintains adequate structural strength despite the thin walls, achieving a balance between ease of operation and damage resistance.
Solution Approach 2:
The patent uses a composite structure combining the main body and a hollow portion, creating a structure that is both strong and flexible. The hollow portion acts as a stress-absorbing element that maintains overall structural integrity while allowing localized deformation.
4Ease of operation
If hooks are engaged to install balls, then installation is facilitated, but balls on the other side remain unrestrained and may fall out
Solution Approach 1:
The patent designs the retaining portion to serve multiple functions simultaneously: it acts as both the installation mechanism (through elastic deformation) and the retention mechanism (through the hollow portion structure). This multi-functionality ensures that balls are securely restrained while maintaining ease of installation.
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
Enhances the convenience of installing and removing balls by avoiding direct collision damage and reducing operational force, while extending lubrication through oil-saving design, thus improving assembly efficiency and reducing costs.
Implementation Method 1
When the retaining portion is compressed, a part of the retaining portion is elastically deformed relative to the main body by means of the hollow portion
Implementation Method 2
the hollow portion is used to save lubricating oil for achieving the effect of extended lubrication
Data Source
AI summary
A retainer is used for a linear guideway, including a main body, a retaining portion, and a hollow portion. The main body extends along the longitudinal direction of the retainer. The retaining portion extends from a long side of the main body along the width direction of the retaining portion. The hollow portion is abutted between the retaining portion and the main body for allowing a part of the retaining portion to be elastically deformed when the retaining portion is compressed by an external force. Therefore, when balls are assembled, the retainer of the present invention uses the partial elastic deformation of the retaining portion to avoid damage caused by directly collided with the balls, thereby enhancing convenience of installing and removing the balls. In addition, the hollow portion can be used to save lubricating oil for achieving the effect of extended lubrication.