Quick-Release Screwdriver With Inclined Notch Locking Mechanism
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Solution Overview
Problem
Traditional screwdriver designs require additional processing to form grooves on screwdriver heads for replaceable functionality, increasing production costs.
Innovation Solution
A quick-release screwdriver structure featuring a tool holder with a fixing seat and steel ball mechanism, where a release ring drives a steel ball along an inclined notch to lock or release the tool head, eliminating the need for grooves on the screwdriver heads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a groove is provided on the surface of the screwdriver head and a locking means is provided on the screwdriver to act on the groove, then the screwdriver head can be locked and replaced, but additional processing is required on the screwdriver head which increases production costs
Solution Approach 1:
Instead of providing a groove on the screwdriver head and having the locking means act on it, the patent inverts the approach by providing a protrusion on the locking means that acts on a groove in the fixing seat. This eliminates the need for additional processing on the screwdriver head while maintaining the replaceable function.
Solution Approach 2:
The patent extracts the groove structure from the screwdriver head and relocates it to the fixing seat. This allows the locking mechanism to function without requiring any additional processing on the screwdriver head, thereby reducing production costs while preserving adaptability.
2Adaptability or versatility
If a groove and locking means structure is used to enable screwdriver head replacement, then the replaceable function is realized, but the structure becomes more complex requiring additional components
Solution Approach 1:
The patent inverts the traditional locking mechanism design by placing the groove on the fixing seat rather than on the screwdriver head. This simplifies the overall structure by eliminating the need for complex locking means that would otherwise be required to interact with a groove on the head.
Solution Approach 2:
The fixing seat integrates multiple functions: it provides the groove for the locking mechanism, serves as the mounting structure for the steel ball, and acts as the interface between the screwdriver holder and the screwdriver head. This multi-functionality reduces the number of separate components needed.
3Adaptability or versatility
If traditional locking means are used with grooves on screwdriver heads, then locking and replacement are achieved, but the assembly process becomes more complicated
Solution Approach 1:
By inverting the groove location to the fixing seat, the patent enables simpler assembly where the screwdriver head with its protrusion simply engages with the groove in the fixing seat, eliminating the need for complex alignment and insertion procedures required by traditional designs.
Solution Approach 2:
The groove is pre-formed in the fixing seat during its manufacturing process, rather than requiring additional processing of the screwdriver head during assembly. This preliminary action simplifies the assembly process by eliminating extra steps.
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
Enables secure locking and easy replacement of tool heads without the need for groove formation, reducing production costs and simplifying the assembly process.
Implementation Method 1
a spring member is provided between the release ring and the tool holder, one end of the spring member being installed to the tool holder, the other end of the spring member abutting against the retainer, and the spring member is in a compressed state and applies a force on the retainer to move the retainer toward a head portion of the tool head
Implementation Method 2
an inner wall of the fixing seat is provided with a notch, and a bottom surface of the notch is an inclined surface; a steel ball connected to a release ring is installed in the notch, and the steel ball contacts the tool head; and a movement of the release ring will drive the steel ball to move along a longitudinal direction of the bottom surface of the notch so as to lock or release the tool head
Data Source
AI summary
A quick-release screwdriver structure includes a tool holder and a tool head embedded in a head portion of the tool holder. A fixing seat is sleeved outside the tool head; an inner wall of the fixing seat is provided with a notch, and a bottom surface of the notch is an inclined surface; a steel ball connected to a release ring is installed in the notch, and the steel ball contacts the tool head; and a movement of the release ring will drive the steel ball to move along a longitudinal direction of the bottom surface of the notch so as to lock or release the tool head. A new locking assembly is designed to act on a surface of the tool head so as to achieve locking and disassembly of the tool head.