Adhesive Door Frame Mounting With Cam-Lock Error Compensation
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Solution Overview
Problem
The existing methods for mounting stationary frames in door assemblies, such as shower or balcony doors, require drilling into walls, which is time-consuming, risky, and causes permanent damage, limiting future door installation options due to the need for precise hole placement and requiring multiple people.
Innovation Solution
A door assembly with a stationary frame that includes a substrate side with a through hole and a locking assembly featuring an adhesive element, a cam mechanism, and an anchoring portion, allowing for transverse movement without drilling by utilizing an anchoring portion and fixing element with specific width differences to compensate for mounting errors, enabling tool-free installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drilling operation is used to fix stationary frame to wall surface, then reliable fixation is achieved, but wall surface is permanently damaged and drilling time is consumed
Solution Approach 1:
The patent replaces the mechanical drilling and screw fixation system with an adhesive bonding system. The adhesive element is applied to the back surface of the stationary frame and bonds it to the wall, eliminating the need for drilling holes in the wall while achieving reliable fixation through chemical adhesion rather than mechanical penetration.
Solution Approach 2:
The adhesive element serves as an intermediary between the stationary frame and the wall surface. Instead of directly drilling into the wall, the adhesive mediates the connection, allowing the frame to be securely mounted while preserving the wall surface integrity.
2Manufacturing precision
If drilling operation is used to fix stationary frame, then precise positioning is achieved, but installation time increases and multiple people are required
Solution Approach 1:
The patent replaces the drilling operation with adhesive application. The adhesive element can be positioned and adjusted more easily than drilled holes, reducing installation time and eliminating the need for multiple people to operate drilling equipment while maintaining positioning precision through the adhesive's bonding characteristics.
Solution Approach 2:
The adhesive element is prepared in advance and can be positioned on the stationary frame before final mounting. This preliminary positioning allows for easier adjustment and alignment compared to pre-drilled holes, reducing the time and effort required during the actual installation process.
3Adaptability or versatility
If fastener diameter is smaller than through hole diameter to allow transverse movement, then mounting error compensation is achieved, but fixation stability is reduced
Solution Approach 1:
The patent incorporates a cam mechanism that allows the stationary frame to have controlled transverse movement capability. The cam mechanism includes a cam member that can rotate within a cam recess, enabling the frame to adjust position transversely to compensate for mounting errors while maintaining stable fixation through the adhesive bond and cam locking action.
Solution Approach 2:
The patent changes the fixation mechanism from rigid mechanical fastening to adhesive bonding combined with cam-based adjustable locking. This allows the fixation system to transition between stable bonding and controlled movement, enabling both mounting error compensation and fixation stability through different operational states of the cam mechanism.
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
Enables easy, tool-free mounting and adjustment of stationary frames, reducing damage risks and increasing flexibility in door type selection by allowing for error compensation during installation without the need for drilling, thus simplifying the process and minimizing wall damage.
Implementation Method 1
an adhesive element with one side adhered to the wall surface and a locking assembly including a fixing element adhered to the other side of the adhesive element
Data Source
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AI summary
A door assembly comprises a stationary frame having a substrate side. The substrate side has at least one first through hole. The door assembly further comprises an adhesive element and a locking assembly. The locking assembly comprises a fixing element having an anchoring portion, and a cam mechanism movable between a first position and a second position to lock with and release from the anchoring portion. The fixing element has a width less than that of the substrate side and the anchoring portion has a width less than that of the at least one first through hole. Due to the differences between the widths of the substrate side and the fixing element and between the widths of the anchoring portion and the first through hole, the stationary frame is easy to be moved in the width direction, so as to compensate errors generated during mounting operation.