Hidden Wall Cupboard Bracket With Screw-Locked Anti-Disengagement
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Solution Overview
Problem
Existing hidden hanging brackets for wall cupboards are prone to accidental disengagement due to upward and lateral forces, posing safety risks, especially when assembled at low heights, and current anti-disengagement systems can be complicated to assemble and may not function effectively due to interference with wall fixing dowels or screws.
Innovation Solution
A hidden hanging bracket with a perfected anti-disengagement system featuring a screw with a threaded section, tip, and shaped head that engages a horizontal flap on the wall bar, forming side stops to prevent disengagement from upward and lateral forces, while allowing easy assembly and disassembly by positioning the screw to avoid interference with wall fixtures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a hidden hanging bracket is used for wall cupboards, then the appearance is improved and the structure is simplified, but the risk of accidental disengagement increases due to lack of visible constraint
Solution Approach 1:
The patent applies preliminary action by pre-positioning the bead on the hook and pre-forming the undercut in the support bar during manufacturing. The bead is screwed onto the hook before installation, and the undercut is created in advance on the bar, so that when assembled, the anti-disengagement mechanism is immediately active without requiring additional assembly steps or adjustments by the user.
Solution Approach 2:
The patent introduces a bead as an intermediary element that mediates between the hook and the support bar. This bead acts as a mechanical intermediary that translates the hooking action into a locked position by engaging with the undercut, providing the anti-disengagement function without requiring complex mechanisms or visible constraints.
2Reliability
If an anti-disengagement system with a bead is added to prevent upward forces, then the safety is improved, but the assembly complexity increases and the bead may interfere with wall fixing dowels
Solution Approach 1:
The patent merges the anti-disengagement function with the existing hook and support bar components. The bead is integrated onto the hook, and the undercut is formed on the support bar, combining multiple functions (hanging and anti-disengagement) into a unified system that doesn't require separate assembly operations or additional components.
Solution Approach 2:
The bead is pre-screwed onto the hook and the undercut is pre-formed on the support bar during manufacturing, eliminating the need for complex assembly operations during installation. This preliminary preparation simplifies the assembly process while maintaining the anti-disengagement safety function.
3Reliability
If side blocking elements are added to prevent lateral forces, then the anti-disengagement reliability is improved, but the device complexity and difficulty of assembly increase
Solution Approach 1:
The patent merges the lateral force resistance function into the existing bead and undercut mechanism. The bead, when engaged with the undercut, naturally provides resistance to lateral forces without requiring separate side blocking elements. This integration maintains reliability while minimizing device complexity.
Solution Approach 2:
The bead serves multiple functions simultaneously: it prevents upward disengagement forces, resists lateral forces, and maintains the hanging connection. This multi-functionality eliminates the need for separate side blocking elements while maintaining comprehensive anti-disengagement protection.
4Reliability
If the bead is positioned to engage the support bar for anti-disengagement, then the safety is improved, but the bead may encounter wall fixing dowels or screws during assembly, preventing proper engagement
Solution Approach 1:
The patent applies local quality by creating a specific undercut geometry in the support bar at a location optimized for bead engagement. The undercut is positioned and shaped to ensure the bead engages correctly while clearing wall fixing dowels or screws, providing local optimization that resolves the interference problem without compromising overall engagement reliability.
Data Source
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AI summary
A hidden hanging bracket with an anti-disengagement system, for wall cupboards, wherein a cupboard (29) is hooked to a support (17) fixed to the wall (18) by means of a hook (11) with a tooth (15) of a hanging- bracket device of the type in which releasable reciprocal constraint means, consisting of a screw (21) are envisaged between said hook (11) and said support (17), screwed onto said hook (11) and suitable for interfering with said support (17). According to the invention, the screw (21) is screwed into a threaded seat (26) positioned on a section (27) forming part of and incorporated in said hook (11), said section (27) being substantially opposed, not completely offset, with respect to said tooth (15), and that the tip or end part (23) of said screw (21) is engaged with a horizontal flap (edge) (16A) folded directly from said support (17).