Mechanical Panel Locking With Beveled Tool-Free Furniture Assembly
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Solution Overview
Problem
Existing furniture assembly techniques require tools and can lead to incorrect installation, instability, and the need for edge-banding, making the process cumbersome and aesthetically unsatisfactory.
Innovation Solution
A mechanical locking device comprising rod-shaped elements and insertion grooves, along with a locking gear, allows panels to be assembled without tools, providing stability and eliminating the need for edge-banding by using a 45° junction plane and decorative beveled edges, ensuring easy and correct alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional mechanical locking devices are used, then panels can be locked together, but assembly requires tools and is complex
Solution Approach 1:
The patent replaces traditional mechanical locking systems requiring tools with a rod-shaped element that utilizes elastic deformation and friction. The rod is inserted at an angle and locked through material elasticity and surface friction, eliminating the need for tools while maintaining secure connection.
Solution Approach 2:
The locking mechanism is designed to be self-servicing during assembly. The rod-shaped element automatically locks itself through its angled insertion and elastic properties, without requiring external tools or complex adjustment mechanisms. The friction between the rod and insertion groove maintains the locked state passively.
2Reliability
If traditional assembly methods are used, then panels can be connected, but incorrect installation is common
Solution Approach 1:
The rod-shaped element is designed with asymmetric geometry and is inserted at a specific angle (α) relative to the panel surface. This asymmetric design ensures that the rod can only be inserted in the correct orientation, preventing incorrect installation. The insertion groove corresponds specifically to this angled approach, making proper alignment intuitive and error-proof.
3Stability of the object's composition
If panels are assembled with traditional joints, then connection is achieved, but stability is insufficient
Solution Approach 1:
The rod-shaped element is pre-formed with specific elastic properties and angular geometry before assembly. This preliminary preparation ensures that upon insertion, the rod automatically deforms elastically to engage with the insertion groove and locking groove, creating a stable connection without requiring additional stabilization steps or complex multi-component systems.
4Shape
If edge-banding is applied to panel edges, then aesthetics are improved, but manufacturing complexity increases
Solution Approach 1:
The patent extracts the aesthetic function from the edge-banding component and integrates it directly into the panel's edge geometry through the angled junction design. The junction plane itself creates the visual effect previously requiring separate edge-banding materials, eliminating this manufacturing step while maintaining aesthetic quality.
Data Source
AI summary
A set including a first panel, a second panel, a back panel, and a mechanical locking device for locking of a first edge surface of the first panel to a second edge surface of the second panel at a junction plane. The mechanical locking device includes at least one rod-shaped element at the first edge surface and at least one insertion groove at the second edge surface, the rod-shaped element is configured to be inserted into the insertion groove. The mechanical locking device includes a first panel groove on a first panel surface on the first panel and/or a second panel groove on the second panel surface of the second panel. The back panel is configured to cooperate with at least one of the panel grooves, and a locking gear configured to cooperate with the back panel and a panel groove, for locking of the first panel to the second panel.