Driving Device Movable Pins for Load Distribution
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Solution Overview
Problem
Existing driving devices with striking units struggle to evenly distribute load among multiple engaging members, leading to reduced efficiency and increased wear.
Innovation Solution
A driving device design where each engaging member can move from a first position to a second position based on load, allowing for equal distribution of load among all engaging members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple engaging members are provided on the rotating member, then the striking unit can be actuated in both directions, but the load cannot be evenly distributed among all engaging members
Solution Approach 1:
The engaging members are designed to be movable relative to the rotating member, allowing them to dynamically adjust their positions. Specifically, engaging members can move between a first position (for engagement with the rack) and a second position (disengaged from the rack). This dynamic positioning enables selective engagement of different engaging members, allowing load to be distributed across multiple members during repeated operations, thereby resolving the contradiction between bidirectional actuation capability and load distribution.
2Strength
If the engaging member in the guide hole moves in the radial direction to reduce load, then that specific engaging member can handle increased load, but other engaging members cannot reduce load
Solution Approach 1:
The system segments the load-bearing function across multiple engaging members by allowing independent positional adjustment of each member. Each engaging member can independently move between engaged and disengaged states, enabling the system to distribute the total load across multiple members over time. This segmentation transforms a single-point load concentration into a distributed load system, improving both individual member strength utilization and overall productivity.
Solution Approach 2:
The rotating member periodically brings different engaging members into engagement with the rack during successive rotation cycles. By combining the periodic rotation with the ability of engaging members to move between positions, the system achieves periodic load distribution where different members bear load in different cycles. This periodic action ensures that no single member is continuously overloaded while maintaining continuous operational capability.
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 design effectively reduces the load on any engaging member, enhancing the device's efficiency and extending the lifespan of its components.
Implementation Method 1
a metal spring is provided, and the spring biases the engaging member provided in the guide hole to the outer side in the radial direction of the rotating member
Implementation Method 2
a piston that receives the pressure of the pressure accumulation chamber
Data Source
AI summary
A driving device capable of reducing the load in any of the plurality of engaging members is provided. The driving device includes an ejection unit to which a fastener is supplied, a striking unit configured to strike the fastener, a rack provided on the striking unit, a wheel provided rotatably, and a plurality of pins provided on the wheel and engaged with and released from the rack, wherein the plurality of pins can change positions in the wheel, and the plurality of pins include a pin located at a first position where the pin can be engaged with the rack and a pin which is located behind the pin in a rotation direction of the wheel and located at a second position where the pin cannot be engaged with the rack when the striking unit is actuated in the direction of striking the fastener.