Pneumatic Tool Trigger Linkage for Integrated Timer Switching
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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, which can lead to unintentional nail firing and require a mechanism to convert the trigger's operation load into the timer's load direction, complicating the tool's design and operation.
Innovation Solution
A pneumatic tool design that incorporates a transmitting mechanism, specifically a link member, to convert the trigger's operation into the timer switch's operation direction, reducing the operator's load and allowing the timer to be integrated within the grip, thereby simplifying the tool's operation and reducing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume 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 and the operation load of the operator increases
Solution Approach 1:
A transmitting member is introduced as an intermediary element between the trigger and the timer switch. This transmitting member transfers the trigger's movement in its original direction to the timer switch, eliminating the need for load direction conversion and reducing operator effort while maintaining the compact arrangement of the timer within the grip chamber
2Reliability
If both the trigger and timer switch are operated by the operator, then the timer function is achieved, but the operation load of the operator increases
Solution Approach 1:
The operation of the trigger is merged with the operation of the timer switch through the transmitting member. When the operator pulls the trigger, this single action simultaneously activates both the drive mechanism and the timer function, eliminating the need for separate operation of the timer switch and reducing the overall operation load
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A pneumatic tool (1) includes a trigger (50) configured to perform a first operation of operating a drive part, a contact member (20) configured to perform a second operation of operating the drive part, a timer (8) 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 (60) configured to control the operation of the timer. The first operation of the trigger is transmitted to the timer switch using a transmitting member (70).