Trigger Side Switching Mechanism for Compact Driving Machine
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Solution Overview
Problem
Existing portable driving machines for fasteners, such as nails, face challenges in compact design and operation mode switching, as the mechanism for switching between single-shot and continuous-shot driving modes is typically located on the push lever side, complicating the structure and increasing size and weight.
Innovation Solution
The driving switching mechanism is relocated to the trigger side, allowing for a more compact design by simplifying the push lever mechanism and enabling operation mode switching through a movable member and switching valves, facilitating both single-shot and continuous-shot driving modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the operation mode switching mechanism is disposed on the push lever side, then the structure inside the trigger is not complicated, but the driving machine size and weight increase
Solution Approach 1:
The patent inverts the conventional arrangement by moving the operation mode switching mechanism from the push lever side to the trigger side. This reversal allows the switching mechanism to integrate with the trigger assembly, utilizing existing space and structural elements, thereby avoiding the need for additional installation space that would increase overall machine size and weight.
Solution Approach 2:
The trigger assembly is designed to serve multiple functions: it not only activates the driving mechanism through the first switch but also houses the operation mode switching mechanism. This multi-functionality consolidates control elements into a single integrated assembly, reducing the need for separate components and thereby reducing overall machine weight.
2Device complexity
If the operation mode switching mechanism is disposed on the push lever side, then the trigger structure is simplified, but the installation space requirement increases
Solution Approach 1:
The patent inverts the conventional arrangement by moving the operation mode switching mechanism from the push lever side to the trigger side. This reversal allows the switching mechanism to integrate with the trigger assembly, utilizing existing space and structural elements, thereby avoiding the need for additional installation space that would increase overall machine size.
Solution Approach 2:
The operation mode switching mechanism is nested within the trigger assembly structure. The switching mechanism utilizes the existing trigger housing and structural elements, effectively nesting one functional system within another. This nesting approach eliminates the need for separate installation space for the switching mechanism.
3Ease of manufacture
If the driving switching mechanism is disposed on the trigger side, then the push lever mechanism is simplified and disassembly workability is improved, but the trigger structure becomes more complex
Solution Approach 1:
The patent segments the trigger assembly into distinct functional modules: the first switch for activation, the operation mode switching mechanism, and the movable member. This segmentation allows each component to be independently manufactured, assembled, and disassembled, improving manufacturing ease and maintenance workability while distributing complexity across modular units.
Data Source
AI summary
The disclosure discloses a driving machine includes a trigger, a first switch turned on or off by an operation of the trigger, a push lever that moves in response to an operation of pressing an ejection port of a fastener against a driven material, and a second switch turned on or off by movement of the push lever. The driving machine drives the fastener when the first switch and the second switch are both in the ON state. The trigger includes a switching mechanism to switch between a single-shot driving mode and a continuous-shot driving mode.