Driving Tool Regulator Mechanism for Continuous Strike Control
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Solution Overview
Problem
Nailing machines driven by compressed air face challenges in stabilizing continuous strike operations without electricity, as mechanical time measurement mechanisms are difficult to implement effectively within limited spaces, leading to inconsistent timing and degraded user experience.
Innovation Solution
A driving tool with a regulator mechanism that includes a regulation member and damper to control the movement of a contact lever, allowing for a predetermined time period of continuous strike operation by locking the contact lever and contact arm, enabling stable switching between continuous and non-continuous strike modes without the need for electrical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an electrical timer is used to control continuous strike operations, then time measurement stability is improved, but device complexity increases due to required power source and circuit
Solution Approach 1:
The patent replaces the electrical timer system with a purely mechanical time measurement mechanism. The trigger mechanism itself is used to measure time through its movement from initial position to operation position, eliminating the need for electrical components, power sources, and circuits while maintaining time measurement functionality for controlling continuous strike operations.
2Device complexity
If a mechanical time measurement mechanism is combined with the trigger in limited space, then device complexity is reduced, but time measurement stability deteriorates
Solution Approach 1:
The patent makes the trigger mechanism serve dual functions: both actuating the starting valve for the striking operation and measuring the time period for continuous strike control. By utilizing the trigger's inherent movement and position changes for time measurement, the system eliminates dedicated time measurement components while maintaining measurement stability through the trigger's controlled mechanical motion.
3Productivity
If continuous strike mode is enabled by maintaining trigger ON state, then productivity is improved, but reliability decreases due to potential careless operation
Solution Approach 1:
The patent implements a feedback mechanism where the trigger's position and movement provide information about the operator's intent. The time measurement based on trigger movement duration allows the system to understand whether the operator intends single shot or continuous strike mode, enabling automatic mode selection that balances productivity and safety by requiring deliberate trigger manipulation for continuous operation.
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
The solution allows for stable and consistent continuous strike operations for a predetermined time, improving user experience by maintaining consistent timing and operation feel, while eliminating the need for electrical components and space constraints.
Implementation Method 1
a damper (91) that controls a velocity of the moving member (92)
Data Source
Figure 1
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AI summary
A driving tool (1A) drives a fastener supplied to a nose (12) using a striking mechanism. The driving tool includes a trigger (6), a contact arm (8), a contact lever (7) and a regulator (9). The trigger receives a manipulation which operates the striking mechanism. The contact arm reciprocates and receives another manipulation which operates the striking mechanism. The contact lever operates according to operations of the trigger and the contact arm and switches operating states of the striking mechanism. The regulator regulates a movement of the contact lever in a range from an operable position where the striking mechanism is operable by the contact lever to an operation standby position where the contact lever is operable by the contact arm, according to a reciprocating movement of the contact arm, and switches operating states of the contact lever according to the contact arm.