Tool Chuck Lock Release Mechanism for Low-Wear Loosening
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Solution Overview
Problem
Existing chuck apparatuses require manual force and twisting to release the lock between ratchet teeth and locking spring bodies, leading to accelerated wear of ratchet teeth and complicating the loosening process when replacing tools.
Innovation Solution
A chuck apparatus with a lock release mechanism that automatically releases the lock between ratchet teeth and locking spring bodies when rotational force in the tightening direction is set to zero, utilizing a pressing deformation part to elastically deform and restore the locking spring body, allowing effortless rotation in the loosening direction and reducing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lock between ratchet teeth and locking spring body is maintained after tightening, then the tool holding force is ensured, but the ratchet teeth wear is accelerated and the loosening operation becomes difficult
Solution Approach 1:
The lock release mechanism performs preliminary action by automatically releasing the locking spring body from the ratchet teeth before the loosening operation begins. When the rotating cylinder is rotated in the loosening direction, the lock release mechanism detects this rotation and actively ejects the locking spring body from the engagement position, preparing the system for smooth loosening without requiring manual force to break the lock
Solution Approach 2:
The lock release mechanism enables the system to serve itself by automatically detecting the loosening rotation and releasing the lock without external intervention. The mechanism uses the rotational movement itself as the trigger signal to activate the release, making the system self-regulating and eliminating the need for users to apply additional force or perform special maneuvers to release the lock
2Reliability
If the locking spring body and ratchet teeth remain locked after tightening, then the tool is securely held, but the wear of ratchet teeth is accelerated
Solution Approach 1:
The lock release mechanism introduces dynamics by transitioning the locking system from a static locked state to an active release state based on operational conditions. During tightening, the lock is maintained for security; during loosening rotation, the mechanism dynamically activates to release the lock, creating a responsive system that adapts its locking state based on the direction of rotation rather than remaining statically locked
Solution Approach 2:
The locking and releasing of the ratchet teeth occurs periodically based on the tightening and loosening cycles of the chuck. The lock release mechanism ensures that during each loosening cycle, the lock is temporarily disengaged, creating a periodic pattern of locked-unlocked states that reduces continuous wear on the ratchet teeth while maintaining security during tightening phases
3Ease of operation
If manual force is applied to release the lock, then the locking can be broken, but the operation becomes complicated and time-consuming
Solution Approach 1:
The lock release mechanism replaces the manual mechanical force requirement with an automated mechanical system. Instead of relying on the user to apply twisting force to break the lock, the mechanism uses a release protrusion and release groove interaction that automatically converts the loosening rotation into a locking release action, substituting complex manual manipulation with a simpler automated mechanical response
Solution Approach 2:
The release protrusion and release groove act as intermediaries between the rotating cylinder and the locking spring body. This intermediary mechanism translates the rotational movement of the cylinder into the ejection of the locking spring body from the ratchet teeth, providing a mechanical mediation that simplifies the overall operation by decoupling the loosening rotation from the direct force requirement to break the lock
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 easy rotation of the chuck in the loosening direction for tool replacement and significantly reduces wear on ratchet teeth, thereby extending the service life of the apparatus.
Implementation Method 1
a pressing deformation part 11 for pressing and elastically deforming a to-be-pressed part 9a of the locking spring body 9 when the rotating cylinder 1 is rotated in the tightening direction
Data Source
AI summary
Provided is a chuck apparatus enabling ease of rotation of a rotating cylinder in the loosening direction when replacing a tool, suppressed wear of the ratchet teeth, and a longer life span. Through the rotation of a rotating cylinder (1), the chuck apparatus expands or contracts a plurality of jaws (3) inserted into a hole (2a) provided to a tip end of a body (2), and sandwiches and holds a tool (4) using the jaws (3). An annular rotating body (8) screwed together with the jaws (3) and rotating together with the rotating cylinder (1) is fitted to the body (2) inside the rotating cylinder (1). Annular ratchet teeth (5) are provided to the body (2) or the rotating body (8), a detachable locking spring body (9) for locking with the ratchet teeth (5) is provided, and a lock release mechanism is provided for forcibly releasing the locking between the ratchet teeth (5) and the locking spring body (9) when a rotational force in a tightening direction is brought to zero after the rotating cylinder (1) has been rotated in the tightening direction and a holding force on the tool (4) has reached a predetermined value.