Pneumatic Tool Trigger Linkage for Timer Switch Operation
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Solution Overview
Problem
Conventional pneumatic tools face increased operator load due to the need to operate both the trigger and a timer switch simultaneously, which can lead to unintentional nail firing and reduced tool size efficiency when the timer is integrated within the grip.
Innovation Solution
A pneumatic tool design that incorporates a transmitting mechanism, such as a link member, to convert the trigger's operation into the necessary direction for the timer switch, allowing the timer to be operated independently and reducing the overall operator load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the timer and timer switch are integrated within the grip chamber to reduce tool size, then the tool size is reduced, but the operator load increases due to needing to operate both trigger and timer switch simultaneously
Solution Approach 1:
The trigger mechanism serves dual functions: it operates the drive part directly and simultaneously operates the timer switch through the link member. The trigger's movement automatically activates the timer without requiring separate operator action, making the system self-serving and reducing operator load while maintaining compact integration within the grip chamber
Solution Approach 2:
The trigger is designed to perform multiple functions: it directly controls the drive part operation and simultaneously controls the timer switch through mechanical linkage. This multi-functionality allows the single trigger operation to manage both the driving mechanism and the timing function, eliminating the need for separate timer switch operation
2Volume of moving object
If the timer is arranged in the space inside the grip chamber, then the tool size is reduced, but the load direction of the trigger must be converted which complicates the mechanism
Solution Approach 1:
A link member serves as an intermediary mechanical element that connects the trigger to the timer switch. This link member translates and transmits the trigger's movement in its original direction to operate the timer switch, avoiding the need for complex load direction conversion mechanisms while enabling compact integration within the grip chamber
Data Source
AI summary
A pneumatic tool includes a trigger configured to perform a first operation of operating a drive part, a contact member configured to perform a second operation of operating the drive part, a timer configured to measure the time during which the drive part can be operated by the second operation of the contact member and to switch the operation mode of the drive part after the time has elapsed, and a timer switch configured to control the operation of the timer. The first operation of the trigger is transmitted to the timer switch using a transmitting member.