Holding Sleeve Assembly with Interlocking Blocking Members
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Solution Overview
Problem
Conventional hand tool holding sleeve structures are difficult to assemble, disassemble, and fabricate, lacking interchangeability and adjustability, and are costly due to complex designs and high part counts.
Innovation Solution
A fabrication method for a holding sleeve involving a tubular first sleeve with through holes and a stepped shoulder portion, equipped with blocking members and a coil spring that overlaps the blocking members radially to prevent disengagement, allowing for easy assembly and disassembly, and a second sleeve that is controllably movable to secure the blocking members within the first sleeve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the holding sleeve is relatively fixedly secured to the handle using conventional structures, then the structural stability is improved, but the interchangeability and adjustability are lost, and the fabrication complexity increases
Solution Approach 1:
The holding sleeve incorporates a movable second sleeve that can slide along the first sleeve, transitioning between locked and unlocked positions. This dynamic structure enables the holding sleeve to be securely attached to handles when needed, while also allowing for easy removal and repositioning, thus achieving both stability and adaptability
Solution Approach 2:
The holding sleeve is divided into multiple functional components: a first sleeve with through holes, a second movable sleeve, blocking members, and elastic members. This segmentation allows each component to perform its specific function independently, facilitating easy assembly, disassembly, and adjustment while maintaining overall structural integrity
2Reliability
If the holding sleeve is designed with multiple parts and complex structures to achieve stability, then the reliability is improved, but the fabrication difficulty and cost increase
Solution Approach 1:
The first sleeve and second sleeve are designed to fit together through simple cylindrical interfaces with through holes, eliminating the need for complex joining mechanisms. The blocking members and elastic members work together as a integrated locking system that is both reliable and simple to manufacture
Solution Approach 2:
The elastic members automatically engage with the blocking members to secure the second sleeve in position, eliminating the need for additional fasteners or complex assembly steps. The structure is self-securing, which simplifies manufacturing while maintaining reliability
3Force
If the spring member is much longer than the control ferrule with coil pitch greater than detent diameter, then the elastic force is improved, but the disengagement prevention fails during fabrication
Solution Approach 1:
The coil spring is designed with varying coil pitches: a greater coil pitch in the intermediate portion to provide sufficient elastic force, and reduced coil pitches at the opposite ends to prevent disengagement of the detent. This localized variation in coil pitch optimizes both the elastic force and the retention function at different locations of the spring
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
Facilitates quick and easy assembly, disassembly, and fabrication of the holding sleeve, reducing costs and complexity while enabling interchangeability and adjustability, allowing for efficient use in hand tools.
Implementation Method 1
disposing an elastic member around the first sleeve, wherein the elastic member is a coil spring, one end of the elastic member is abutted against the stepped shoulder portion of the first sleeve, without being depressed, an other end of the elastic member statically interferentially corresponds to the blocking member in a radial direction of the first sleeve so as to prevent disengagement of the at least one blocking member from the at least one through hole
Implementation Method 2
disposing a second sleeve around the first sleeve, wherein the elastic member is compressed between and abutted against the stepped shoulder portion and the second sleeve, the second sleeve is controllably movable relative to the first sleeve
Data Source
AI summary
A fabrication method of a holding sleeve is provided. The holding sleeve is adapted to dispose around a body portion of a main body and can rotate relative to the body portion. A blocking member is disposed in at least one through hole of a first sleeve. A second sleeve is movable relative to and disposed around the first sleeve. The blocking member is controllably pressed by the second sleeve to be partially received in an annular groove of the body portion. An elastic member is disposed around and between the first sleeve the first and second sleeves. Before the second sleeve is mounted to the first sleeve, a part of the elastic member corresponds to the blocking member in a radial direction of the first sleeve and can limit the blocking member to locate in the through hole.