Quick-Release Hand Tool Sleeve With Rotatable Size Identification
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Solution Overview
Problem
Conventional quick release devices for hand tools lack user-friendly identification marks and easy operability, making it difficult for users to select the appropriate device and operate it effectively.
Innovation Solution
A quick release device with a stepped structure for easy gripping and force application, featuring an annular plastic body made of thermoplastic polyester elastomer (TPEE) for flexibility and rotatability, and identification marks that can be rotated for clear visibility, including a slidable sleeve, pin, movable rod, and annular plastic body with a stepped structure between the sleeve and body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional quick release device structure is used, then the device can be assembled to hand tool, but the user cannot identify the dimension quickly and the sleeve member cannot be pushed easily
Solution Approach 1:
The device is segmented into distinct functional components: an identification portion with dimension markings, an annular plastic body providing grip surfaces, a slidable sleeve for operation, and a pin mechanism. This segmentation allows each component to be optimized independently - the identification portion provides clear markings, the annular body provides grip surfaces, and the sleeve provides easy operation without complicating the overall structure
Solution Approach 2:
The annular plastic body acts as an intermediary between the user and the slidable sleeve, providing a stepped structure that serves as both a grip surface and a force application point. This intermediary element makes it easier for users to push the sleeve without requiring direct manipulation of the small sleeve components
2Ease of operation
If no identification mark is provided, then the structure remains simple, but the user is unable to identify and choose the appropriate quick release device quickly
Solution Approach 1:
The identification portion incorporates dimension markings and patterns that can be visually distinguished, allowing users to quickly identify the appropriate device size. The annular plastic body can also incorporate color coding or pattern variations to indicate different dimensions, enabling rapid visual identification without adding mechanical complexity
Solution Approach 2:
The identification markings are positioned on the annular plastic body at a location and orientation that allows users to view them clearly from the outside, adding an informational dimension to the device without increasing its mechanical complexity. The stepped structure also adds a dimensional element that aids in visual identification of device size
3Ease of operation
If the sleeve member is not provided with gripping structure, then the structure remains simple, but the user cannot push and operate the sleeve member easily
Solution Approach 1:
The annular plastic body features a curved stepped structure that conforms to the natural grip positions of human fingers. The rounded contours and stepped surfaces provide ergonomic contact points that make it easy for users to grasp and push the slidable sleeve, transforming a potentially difficult manipulation into an intuitive motion
Data Source
AI summary
A quick release device of a hand tool includes: a main body; an operating portion, including a slidable sleeve movably disposed around the main body and a pin radially inserted into the slidable sleeve, the operating portion further including a movable rod movably disposed in the main body, the pin connected with the movable rod; an annular plastic body, rotatably disposed around the slidable sleeve and corresponding to the pin, a stepped structure formed between the slidable sleeve and the annular plastic body; an identification portion, disposed around the annular plastic body; wherein the slidable sleeve is movable between first and second positions, when the slidable sleeve moves toward the first position, the pin drives the movable rod to move toward a fixing position; when the slidable sleeve moves toward the second position, the pin pushes the movable rod to move toward a releasing position.