Linear Actuator Guide Block Snap-Fit Retaining Member
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Solution Overview
Problem
Existing linear actuators face challenges in reducing manufacturing costs and simplifying assembly processes, as they often require complex structures and assembly methods.
Innovation Solution
A linear actuator design featuring a guide mechanism with circulation grooves and a detachable retaining member that allows rolling bodies to circulate freely, simplifying the assembly of cover members and reducing the number of assembly steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cover members are assembled using bolts or similar fastening methods with respect to the guide block, then the assembly is secure and reliable, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The patent replaces the traditional bolt-based mechanical fastening system with a snap-fit retention mechanism. The retaining member features engagement protrusions that fit into corresponding recesses in the guide block, eliminating the need for bolts and significantly simplifying the assembly process while maintaining secure attachment.
Solution Approach 2:
The retaining member is designed as a separate, detachable component that can be independently assembled and disassembled from the guide block. This segmentation allows for easy maintenance and replacement without affecting the entire assembly, reducing assembly complexity while preserving reliability.
2Ease of operation
If a detachable retaining member is used to assemble cover members with respect to the guide block, then ease of assembly is enhanced and structure is simplified, but the retention mechanism becomes more complex
Solution Approach 1:
The patent combines multiple functions into the retaining member: it simultaneously retains the cover members on the guide block and provides structural support for the circulation grooves. This merging of functions reduces the overall number of components needed, simplifying the overall structure despite the specialized nature of the retaining member.
Solution Approach 2:
The retaining member serves multiple purposes: it acts as a fastener for cover members, a structural support element, and a guide for the circulation grooves. This multi-functionality reduces the total component count and simplifies assembly procedures while maintaining system reliability.
3Ease of manufacture
If the structure of the linear actuator is simplified to reduce manufacturing costs, then manufacturing cost decreases, but the reliability and performance of the guide mechanism may be compromised
Solution Approach 1:
The patent changes the retention mechanism from a multi-component bolted assembly to a single-piece snap-fit design. This parameter change in the assembly method reduces manufacturing complexity and cost while maintaining or even improving reliability through more consistent fit and reduced assembly variability.
Solution Approach 2:
The retaining member is designed as a simple, easily manufactured component that can be produced cost-effectively through standard molding or machining processes. Its simplicity allows for low-cost manufacturing while maintaining sufficient durability for the application, reducing overall system cost without compromising reliability.
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
This design enhances ease of assembly and reduces manufacturing costs by simplifying the structure and eliminating the need for complex bolt-based assembly, while ensuring reliable retention of rolling bodies in circulation grooves.
Implementation Method 1
a plurality of rolling bodies roll and circulate through the circulation grooves
Data Source
AI summary
A linear actuator. A guide block for constituting a guide mechanism includes a pair of ball circulation grooves formed in the lower surface of the guide block, the lower surface facing a cylinder body, and balls are mounted in the ball circulation groove. A pair of cover blocks are respectively mounted to the opposite end surfaces of the guide block, and the base section of a cover plate of a plate material is mounted to the lower part of the guide block to thereby retain the balls within the ball circulation groove. Hook sections provided to ends of the base section are engaged with the cover blocks to thereby integrally connect the cover blocks and the guide block.