Drill Chuck Locking Structure for Secure Jaws and Easy Release
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Solution Overview
Problem
Existing drill chucks suffer from self-locking or loosening issues during drilling, making it inconvenient for operators to use and replace drill bits.
Innovation Solution
A drill chuck design featuring a locking structure between the housing and jaws, with a toothed structure and clamping mechanism that restricts movement to prevent further clamping or unclamping, and a driving assembly that includes a sleeve and elastic member to manage the locking member's rotation, ensuring the jaws remain secure without becoming too tight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drill chuck uses a self-locking mechanism to prevent jaw loosening during drilling, then the reliability of the drilling operation is improved, but the ease of operation deteriorates because the jaw cannot be loosened by hand to replace drill bits
Solution Approach 1:
The patent implements a dynamic locking mechanism where the locking member can be actively engaged or disengaged based on operational needs. During drilling, the locking member engages with the toothed structure to prevent jaw loosening. For drill bit replacement, the locking member can be actively disengaged to allow jaw loosening. This dynamic state change resolves the contradiction between reliability during operation and ease of operation during maintenance.
Solution Approach 2:
The patent introduces a locking member as an intermediary element between the jaw and the driving assembly. This locking member acts as a mediator that can selectively engage or disengage to control the connection between components. When engaged, it provides reliable locking; when disengaged, it allows easy loosening for drill bit replacement, thus resolving the contradiction through intermediate control.
2Reliability
If the driving assembly continuously drives the locking member to rotate to maintain jaw clamping, then the jaw security is improved, but the device complexity increases due to the need for continuous actuation mechanisms
Solution Approach 1:
The patent extracts the continuous actuation mechanism from the driving assembly and replaces it with a simple toothed structure and locking member combination. The toothed structure on the locking member engages with corresponding teeth on the driving assembly, allowing the jaw to be clamped securely without requiring continuous rotational driving. This extraction of the continuous actuation function reduces device complexity while maintaining jaw clamping stability.
Solution Approach 2:
The toothed structure on the locking member enables the mechanism to maintain its own locking state passively once engaged. The interlocking teeth automatically maintain the clamped position without requiring continuous external actuation. This self-maintaining locking mechanism eliminates the need for complex continuous driving mechanisms, reducing device complexity while ensuring jaw clamping stability.
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
Prevents the jaws from loosening during drilling and prevents them from being clamped too tightly, effectively addressing the self-locking or loosening issues, enhancing operational convenience and reliability.
Implementation Method 1
a driving assembly, disposed on an outer side of the locking member, the driving assembly being configured to drive the locking member to rotate
Data Source
AI summary
Some embodiments of the present disclosure provide a drill chuck. The drill chuck includes: a drill body; jaws, partially disposed in the drill body, external threads being provided on an outer wall of the jaws; a locking member, disposed on the outer side of the drill body, the locking member being provided with internal threads, the locking member and the jaws being in threaded fit to enable the jaws to be movably disposed in the drill body; a driving assembly, disposed on an outer side of the locking member, the driving assembly being configured to drive the locking member to rotate, the driving assembly being disposed between a housing and the locking member, the housing driving the locking member to rotate by the driving assembly to enable the jaws to move in the drill body; and a locking structure, located between the housing and the jaws.