Plasterboard Fixing Assembly With Simultaneous Retaining Arm Actuation
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Solution Overview
Problem
Existing fixing devices for plasterboard struggle with uneven gripping and slippage, especially when used in corners or against objects, and there is a risk of over-insertion leading to loss into cavities behind the plasterboard due to varying wall thicknesses.
Innovation Solution
A fixing system with a body having multiple passages and shafts that allow retaining members to pivot from a retracted to an extended position simultaneously, using an activation tool to ensure secure anchoring, and over-insertion stops to prevent excessive depth penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If retaining members are extended to secure the fixing device in the hole, then the fixing device is retainable and prevents removal, but uneven gripping and slippage occur when used in corners or against objects
Solution Approach 1:
The fixing device divides the retention function into multiple independent retaining members (typically three arms) that can be individually activated. Each arm is controlled by its own shaft that can be independently rotated, allowing selective engagement of retaining members based on the installation situation. This segmentation enables uniform gripping distribution while maintaining reliable retention capability.
2Reliability
If the fixing device is inserted deeply into the hole to ensure anchoring, then secure anchoring is achieved, but over-insertion causes loss into cavities behind the plasterboard
Solution Approach 1:
The fixing device incorporates pre-positioned depth control features (such as stops or限位 structures) that prevent over-insertion before the retaining members are extended. This preliminary action ensures that the body remains accessible for operation while automatically adapting to different wall thicknesses, eliminating the need for precise insertion depth control by the user.
3Ease of operation
If multiple shafts are provided for individual rotation of retaining members, then even gripping is achieved, but device complexity increases
Solution Approach 1:
The fixing device combines multiple shafts and retaining members into a single integrated body structure where the shafts are positioned and oriented to work together as a coordinated system. The body integrates the activation mechanism for all retaining members, allowing them to be engaged simultaneously or selectively through a unified operation process, thereby reducing overall system complexity despite having multiple movable components.
Data Source
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AI summary
The present invention relates to a fixing device and finds particular, although not exclusive, utility in providing an anchoring point in plasterboard 23 cavity walls or ceilings for the purpose of affixing other items thereto, in which uneven gripping and/or slippage of the fixing device can be avoided by reducing the steps taken to secure the device.