Tacker Flywheel Spring Accumulator Energy Storage
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Solution Overview
Problem
Existing tackers lack efficient energy delivery mechanisms, leading to suboptimal performance in driving nails, as they rely solely on direct energy transfer from a flywheel mass without prolonged energy release.
Innovation Solution
Combining a flywheel mass with a spring accumulator and a centrifugal mechanism, allowing for a detachable frictional connection, which enables prolonged energy release and high driving energy through a rotational movement that pre-tensions the spring accumulator, utilizing an electric motor that maintains continuous rotation during nail driving processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a flywheel mass directly drives the setting piston, then the mechanism is simple, but the energy release duration is short and driving energy is insufficient
Solution Approach 1:
The patent combines a flywheel mass with a spring accumulator to create a hybrid energy storage system. The flywheel stores kinetic energy and the spring accumulator stores elastic potential energy, merging two different energy storage mechanisms to provide both high power output and extended energy release duration for driving the setting piston.
Solution Approach 2:
The spring accumulator acts as an intermediary between the flywheel mass and the setting piston. It receives energy from the flywheel through a friction clutch and then releases this energy to drive the setting piston, thereby extending the energy release duration and providing sufficient driving energy.
2Power
If the electric motor is designed for high power output, then driving energy is sufficient, but the motor size increases
Solution Approach 1:
The flywheel mass is pre-accelerated by the electric motor before the actual nail driving operation. This preliminary action stores energy in the flywheel, allowing the motor to operate at lower power during the driving phase while still delivering sufficient energy through the extended energy release mechanism.
Solution Approach 2:
The system maintains continuous rotation of the flywheel and motor operation throughout the process, with the motor running through multiple successive driving-in processes without changing direction. This continuous operation allows for smaller motor design while maintaining effective energy delivery.
3Adaptability or versatility
If the motor changes direction between driving-in processes, then operational flexibility is improved, but energy efficiency decreases
Solution Approach 1:
The electric motor and flywheel maintain continuous rotation in the same direction throughout multiple driving-in processes. The system is designed to complete several nail driving operations without requiring the motor to reverse direction, thereby maintaining energy efficiency and taking advantage of the electric motor's characteristics.
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
This configuration provides high driving energy efficiently, ensuring effective nail insertion with reduced motor size and energy savings during idle periods, while maintaining consistent motor operation.
Implementation Method 1
an electric motor drives a rotating flywheel mass, with a setting piston for driving in the nail being able to be linearly accelerated by the flywheel mass via a friction clutch
Implementation Method 2
a friction clutch for accelerating the setting piston in the setting direction using the rotational energy of the flywheel mass
Implementation Method 3
the setting piston can be acted upon by a spring element in a setting direction
Implementation Method 4
the centrifugal mass acts on the setting piston, as a result of which the setting piston prestresses the spring accumulator in a clamping direction opposite to the setting direction
Data Source
Figure 1
AI summary
The invention relates to a driving device comprising a drive motor, a flywheel, and a setting piston, wherein the flywheel can be set into a rotary motion via the drive motor, wherein a spring accumulator can be tensioned by the flywheel via a releasable force connection, in particular a friction connection, and wherein the setting piston can be driven in a setting direction via the tensioned spring accumulator.