Screwdriver Press Set Locking Mechanism
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Solution Overview
Problem
Conventional screwdriver structures are inconvenient due to the need to manually operate a slide valve to unlock and fold the cover, limiting operation space and requiring separate hand movements, which complicates user interaction and reduces the ability to withstand force.
Innovation Solution
A screwdriver structure featuring a main body with a switch set and press set, where the press set is movable within a chamber to lock and unlock the switch set using clamping portions, allowing for easy folding and exposure of the press set by reciprocal pressing, thereby simplifying user operation and distributing elastic force effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the slide valve is moved to lock or unlock the cover, then the cover can be secured or released, but the user has to use separate hand movements which causes inconvenience and wastes time
Solution Approach 1:
The patent combines the cover locking mechanism with the press set operation. When the user presses the press set, the clamping portions automatically lock the cover in place. When the press set is released, the cover unlocks automatically. This merges two separate operations (locking and pressing) into one unified action, eliminating the need for separate hand movements and improving operational convenience while maintaining reliable locking
2Volume of moving object
If the handle and cover have a smaller volume, then the device is more compact, but the operation space of the slide valve is limited and the contact area with the user's hand is reduced
Solution Approach 1:
The patent transitions from a lateral sliding operation (requiring horizontal space) to a vertical pressing operation. The press set moves along the longitudinal axis of the handle, utilizing the length dimension rather than width or depth. This dimensional change allows for adequate operation space within a compact cross-sectional area, maintaining device compactness while providing sufficient contact area for user operation
3Device complexity
If the stop hook and stop flange are locked by a single side, then the structure is simple, but the stop hook cannot withstand a large force
Solution Approach 1:
The patent employs asymmetric clamping portions where one side has a clamping surface that contacts the press set while the other side has a corresponding contact surface on the press set. This asymmetric design creates a force distribution mechanism where the locking force is applied through multiple contact points rather than a single point, enabling the structure to withstand larger forces while maintaining relative simplicity
4Volume of moving object
If the slide valve has a smaller volume, then the device is more compact, but the user cannot clearly see the right position of the slide valve and fails the operation
Solution Approach 1:
The patent incorporates visual indicators on the press set that change appearance based on the locked/unlocked state. When the press set is pressed and locked, the indicator displays one visual state (such as a colored band or positional marker), and when released, it displays another visual state. This allows users to clearly see the correct position and operational state of the compact press set, eliminating the visibility problems associated with small components
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 user operation by allowing the press set to be easily folded or exposed without detachment, enhancing usability and force distribution through the clamping and elastic mechanisms, improving user interaction and operational efficiency.
Implementation Method 1
a first elastic member 25 elastically biased between the second seat 22 and the clamping block 23
Implementation Method 2
a second elastic member 36 elastically biased between the first end of the rod 35 and the pin 33
Data Source
AI summary
A screwdriver structure includes a main body, a switch set assembled with the main body, and a press set assembled with the main body and the switch set. The main body is provided with a drive portion, a first chamber, a second chamber, a resting edge, and at least one first slide. The switch set includes two first clamping portions. When the switch set is pressed, the two first clamping portions are moved toward each other or moved away from each other. The press set is pressed and moved in the first chamber to push the switch set, so that the two first clamping portions are moved to clamp and lock the press set. When the press set is pressed again, the two first clamping portions are moved to release the press set.