Extendable Fastener Magazine With Ribbed Fingers for Collar Retention
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Solution Overview
Problem
Existing fastening means with collars, such as screw anchors, tend to fall out of magazines due to uneven weight distribution, making secure storage and handling challenging, especially in construction settings where multiple fastening elements are required.
Innovation Solution
A magazine design featuring receiving cells with engagement fingers that have ribs and a direction-dependent spring constant, allowing secure retention of fastening means with collars through a through-opening mechanism, enabling multiple uses and flexible deformation for easy handling and connection with other magazines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fastening means with collars are stored in a magazine, then multiple fastening means are made available to users, but the uneven weight distribution causes fastening means to fall out of the magazine
Solution Approach 1:
The magazine is divided into multiple receiving cells, each with engagement fingers that independently secure individual fastening means. This segmentation allows each cell to handle the weight distribution problem locally while maintaining overall magazine functionality.
Solution Approach 2:
The engagement fingers are designed to be movable and elastically deformable, allowing them to adapt to the uneven weight distribution of fastening means with collars. The fingers can pivot and deform to accommodate the weight while maintaining secure retention.
2Reliability
If engagement fingers are made rigid to securely hold fastening means, then retention is improved, but the magazine becomes less flexible and harder to handle
Solution Approach 1:
The engagement fingers are designed with elastic deformability and directional spring constants, making them dynamically adaptable. They can deform elastically to accommodate fastening means while maintaining secure retention through their rib structures.
Solution Approach 2:
Different regions of the engagement finger have different mechanical properties - the rib regions are rigid for secure retention while the connection regions are more flexible. This local quality differentiation allows simultaneous achievement of retention and flexibility.
3Reliability
If engagement fingers have high spring constant along insertion direction to prevent movement, then retention is improved, but insertion of fastening means becomes more difficult
Solution Approach 1:
The engagement finger has direction-dependent spring constants with different stiffness in different directions. It has higher spring constant along the insertion direction for retention while having lower spring constant perpendicular to insertion direction for easy insertion.
Solution Approach 2:
The engagement finger has an asymmetric cross-section that creates different spring constants in different directions. This asymmetry allows the finger to be stiffer along the insertion direction for retention while being more compliant perpendicular to insertion for easy insertion.
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 magazine securely holds fastening means with collars, preventing accidental falling and allowing for efficient multiple use, facilitating high-frequency setting operations in construction environments, especially when used with construction robots, while being environmentally friendly due to biodegradable materials.
Implementation Method 1
The engagement finger may be elastically deformable. Thus, different types of fastening means, for example having different collar sizes, can be held in the same magazine.
Implementation Method 2
In particular, the engagement finger may have a higher spring constant along the insertion direction than perpendicularly to the insertion direction.
Data Source
AI summary
A magazine suitable for receiving at least one fastening means is provided, comprising at least one receiving cell, wherein each receiving cell has a cell frame which has a through-opening, wherein the through-opening extends through the receiving cell. Each receiving cell has a multiplicity of engagement fingers which extend from the cell frame with their free ends into the through-opening, wherein each of the engagement fingers has at least one rib. Furthermore, a filled magazine and the use of the filled magazine is also provided.