Powered Ratchet Tool Pivotable Head Locking Mechanism
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Solution Overview
Problem
Powered ratchet tools lack versatility in orientation, limiting their ability to access tight or irregular spaces due to fixed head positions, and often require disassembly for changing orientations.
Innovation Solution
A powered ratchet tool design featuring a pivotable head that can lock into multiple discrete orientations using a collar mechanism, allowing the head to freely pivot between these positions, and a gear assembly that transmits torque to the ratchet mechanism, enabling operation in various orientations without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the head is fixed in a single orientation, then the device structure is simple, but the adaptability to different working orientations is poor
Solution Approach 1:
The head is made dynamically adjustable through a pivoting mechanism that allows the user to change the head orientation relative to the housing. The head can pivot about a second axis that is perpendicular to the motor axis, enabling the head to be positioned at different angles (e.g., 0 degrees, 45 degrees, 90 degrees) to adapt to various working orientations and tight spaces.
Solution Approach 2:
The device is segmented into distinct functional modules: the housing containing the motor, the independently pivoting head containing the ratchet mechanism, and the collar as a separate locking component. This segmentation allows the head to be independently positioned and locked at different orientations without affecting the motor housing structure.
2Adaptability or versatility
If the head can pivot freely between orientations, then the adaptability improves, but the structural stability deteriorates
Solution Approach 1:
The collar is designed to preliminarily engage with the head at predetermined discrete orientations before the user completes the positioning action. The collar includes engagement features that automatically align with corresponding features on the head at specific angles, providing preliminary stabilization before final locking occurs.
Solution Approach 2:
The locking mechanism is designed to self-lock at discrete orientations through the interaction between the collar and the head. When the head pivots to a predetermined orientation, the collar automatically engages with the head to lock it in place without requiring additional locking actions from the user, thereby maintaining structural stability at each positioned orientation.
3Stability of the object's composition
If a locking mechanism is added to secure the head at discrete orientations, then the position stability improves, but the device complexity increases
Solution Approach 1:
The locking function is merged with the collar that already serves as a structural component of the device. The collar is designed to perform dual functions: supporting the head and providing locking capability through engagement features. This merging avoids adding a completely separate locking mechanism and reduces overall device complexity.
Solution Approach 2:
The collar is designed as a multi-functional component that simultaneously serves as a structural support element and a locking mechanism. The same collar that provides structural integrity to the head assembly also includes engagement features that lock the head at discrete orientations, eliminating the need for separate locking components.
4Manufacturing precision
If the head is locked at discrete orientations, then the operational precision improves, but the ease of operation between orientations deteriorates
Solution Approach 1:
The head pivoting mechanism is designed to be dynamically adjustable, allowing smooth movement between discrete orientations. The pivoting action about the second axis (perpendicular to the motor axis) enables the user to easily reposition the head between locked orientations by simply applying force to overcome the locking engagement, making repositioning straightforward while maintaining precise discrete positioning.
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 the ratchet tool to perform fastening tasks in tight or irregular spaces with a large range of orientations, enhancing accessibility and usability without the need for disassembly, and providing adjustable torque settings through a clutch mechanism.
Implementation Method 1
a motor disposed within the housing, the motor including an output spindle driven by the motor about a first axis
Implementation Method 2
the head including a ratchet mechanism driven by the output spindle
Implementation Method 3
a gear assembly disposed in the gear housing portion. The gear assembly is configured to transmit torque from the motor to the ratchet mechanism
Implementation Method 4
a locking mechanism moveable between a first position, in which the head is locked in one of the plurality of discrete orientations with respect to the housing
Data Source
AI summary
A powered ratchet tool includes a housing with a battery receptacle, a motor within the housing with an output spindle driven about a first axis, a battery configured to be coupled to the battery receptacle to power the motor, a head pivotably coupled to the housing and configured to pivot with respect to the housing about a second axis perpendicular to the first axis and between a plurality of discrete orientations, the head including a ratchet mechanism driven by the output spindle and an output drive coupled to the ratchet mechanism and configured to rotate about an output drive axis, and a locking mechanism moveable between a first position, in which the head is locked in one of the plurality of discrete orientations with respect to the housing, and a second position, in which the head freely pivots between the plurality of discrete orientations about the second axis.