Drill Chuck Strength-Boosting Structure for Stable Bit Locking
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Solution Overview
Problem
Hand-tight drill chucks often experience loose clamping of drill bits due to insufficient clamping force and failure of the locking state, leading to operational issues during drilling.
Innovation Solution
A strength-boosting drill chuck design incorporating a liquid plastic component with a piston and clutch connection structure that enhances the binding force between the nut and clamping claw, using a radially elastic ring and connecting sleeve to transmit force effectively, ensuring the nut remains secure during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a hand-tight drill chuck uses a simple threaded connection between the nut and clamping jaw, then the device complexity is low and ease of operation is high, but the clamping force is insufficient and the locking state is unstable
Solution Approach 1:
The patent introduces a liquid plastic component as an intermediary between the nut and clamping jaw. This liquid plastic material transmits and amplifies the binding force from the threaded connection, providing enhanced clamping force without requiring a completely redesign of the basic threaded mechanism. The liquid plastic acts as a force amplifier that bridges the gap between simple threading and high-strength clamping.
Solution Approach 2:
The patent employs liquid plastic material, which is a composite material combining properties of liquids and plastics. This material allows the clamping mechanism to achieve both flexibility and strength, enabling the nut-clamping jaw connection to maintain high binding force while accommodating slight variations in threading and wear over time.
2Reliability
If the nut and clamping jaw are connected by simple threads, then the ease of manufacture is high, but the resistance to reverse forces is insufficient causing loosening during operation
Solution Approach 1:
The liquid plastic component serves as a mediator that enhances the reliability of the locking state. It fills the threaded connection interface and provides additional bonding strength, preventing the nut from loosening under reverse forces during drilling operations. The liquid plastic creates a more secure mechanical interlock beyond what simple threads can provide.
3Reliability
If the clamping force is increased to prevent loosening, then the reliability improves, but the device complexity increases due to additional strength-boosting structures
Solution Approach 1:
The patent utilizes the properties of liquid plastic material, which behaves similarly to hydraulic systems in transmitting and amplifying force. The liquid plastic component transforms the rotational motion and binding force from the nut into amplified clamping force on the clamping jaw, providing high reliability without requiring complex mechanical linkages or additional actuating mechanisms.
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
The solution significantly increases the clamping force and resistance to reverse forces, maintaining a stable locked state and improving the overall performance of the drill chuck, preventing loosening during drilling.
Implementation Method 1
The drill chuck is provided with a strength-boosting structure of the connecting force of the nut and the clamping claw, the strength-boosting structure is provided with a liquid plastic component, and a structure that exerts force and transmits force to the liquid plastic component
Data Source
AI summary
The invention provides a strength-boosting drill chuck comprising a drill body, a nut and a clamping claw, which the nut and the clamping jaw forms a threaded connection, and the drill body is provided with an inclined clamping claw hole for the clamping claw to slide forward and backward along the clamping claw hole; wherein the drill chuck is provided with a strength-boosting structure of the connecting force of the nut clamping claw, which is provided with a liquid plastic component, and the structure for exerting force and transmitting force to the liquid plastic component, which enables the force on the liquid plastic component to be transmitted to the nut. The invention can use the liquid plastic component to transmit force, greatly enhance the binding force between the nut and the clamping claw, and increase the force to resist the reverse force and the inertia force. Whether it is a hand tight drill chuck or a drill chuck with self-locking function, it can cope with the adverse effects caused by various reasons on the drill chuck to hold the drill bit and keep the locking state, and significantly improve the properties of the drill chuck, and prevent loosening during drilling.