Handheld Clamping Tool Bracket Locking Mechanism
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Solution Overview
Problem
Conventional handheld clamping tools require complex and labor-intensive procedures to switch between clamping and expansion modes, involving frequent detachment and reattachment of the bracket, which is inconvenient and time-consuming.
Innovation Solution
A handheld clamping tool design featuring a sliding bar with two lock holes, a bracket that can be selectively coupled to either end, a handle holder with a second jaw, a driving handle, and a control knob system comprising a male and female knob member with a pin and compression spring, allowing easy switching between clamping and expansion modes by locking or unlocking the bracket to the sliding bar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bracket is detachably coupled to the sliding bar with a lock screw and nut mechanism, then the bracket can be securely locked in position, but the operation procedure becomes complicated and time-consuming when switching between modes
Solution Approach 1:
The patent extracts the locking function from the bracket assembly and integrates it into the sliding bar through a separate locking mechanism. The locking member is positioned on the sliding bar and engages with the bracket, allowing the bracket to be quickly locked and unlocked without complex manual operations. This separation simplifies the mode switching process while maintaining secure locking.
Solution Approach 2:
The patent introduces a locking member as an intermediary component between the bracket and sliding bar. This locking member includes a locking protrusion that engages with a corresponding recess on the bracket, providing a simple yet reliable locking mechanism that can be quickly actuated to secure or release the bracket without requiring complex manual manipulation.
2Adaptability or versatility
If the bracket is frequently detached and reattached to switch between clamping and expansion modes, then the tool can adapt to different applications, but the time and labor required increases significantly
Solution Approach 1:
The patent implements a dynamic locking mechanism that allows the bracket to be quickly locked and unlocked through a simple actuating motion. The locking member can be moved between engaged and disengaged positions, enabling rapid mode switching between clamping and expansion applications without requiring complete detachment and reattachment of the bracket.
Solution Approach 2:
The patent designs the locking mechanism with preliminary positioning features that align the bracket and sliding bar components before locking occurs. The locking protrusion and corresponding recess are pre-positioned to engage automatically when the bracket is moved into place, eliminating the need for complex alignment procedures and reducing the time required for mode switching.
3Strength
If a lock screw and nut mechanism is used to secure the bracket, then the connection is strong and reliable, but the structural complexity and number of parts increases
Solution Approach 1:
The patent extracts the threading and nut components from the locking mechanism, replacing them with a simpler locking member that uses a direct engagement system. The locking protrusion on the sliding bar engages with a recess on the bracket, eliminating the need for threads and nuts while maintaining connection strength and reducing the number of parts.
Solution Approach 2:
The patent segments the locking function into a separate locking member that is independent from the bracket and sliding bar main structures. This locking member is a simple, single-piece component that provides the necessary locking action without requiring complex assemblies of threads, nuts, and washers, thereby reducing overall device complexity.
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 quick and convenient mode switching between clamping and expansion applications, simplifying the operation process and reducing the time and effort required, while maintaining structural integrity and functionality.
Implementation Method 1
a compression spring mounted between the male knob member and the bracket to support the male knob member in the locking position where the pin is inserted through the lock hole
Data Source
AI summary
A handheld clamping tool includes a sliding bar, a bracket selectively and detachably coupled to one of two opposite ends of the sliding bar and providing a first jaw, a handle holder affixed to the sliding bar and providing a second jaw, a driving handle operable to move the bracket relative to the handle holder, and a control knob including a male knob member and a female knob member coupled together in a horizontal bottom hole of the bracket, a pin affixed to the female knob member and movable with the female knob member in and out of a lock hole at one end of the sliding bar to lock/unlock the bracket and the sliding bar, and a compression spring mounted between the male knob member and the bracket to support the male knob member in the locking position where the pin is inserted through the lock hole.