Sliding Door Guide Locking Mechanism for Tool-Free Pin Assembly
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Solution Overview
Problem
Existing sliding door guide mechanisms lack a secure and easy-to-visualize method for confirming the securement of the bearing pin, requiring tool-assisted disassembly and making assembly and disassembly cumbersome.
Innovation Solution
A sliding element with a displaceable securing element that locks and releases the bearing pin, allowing for visual confirmation of the locking state and enabling tool-free assembly and disassembly, utilizing a spiral spring for pretension and a keyhole-shaped through-opening for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bending spring with circumferential groove is used to secure the bearing pin, then the bearing pin can be locked in position, but it cannot be readily recognized whether the bearing pin is securely mounted and tool assistance is required for disassembly
Solution Approach 1:
The securing element is designed to be actuated by the bearing pin itself during assembly. When the bearing pin is inserted, it automatically moves the securing element from the release position to the locking position through the cam-shaped interaction, eliminating the need for tool assistance and making the process self-service oriented
Solution Approach 2:
The securing element features a tab that protrudes beyond the sliding body in the release position, providing visual feedback to indicate the unsecured state. When locked, the tab is concealed, providing visual confirmation of the secured state. This feedback mechanism allows operators to visually confirm proper installation without additional tools
2Ease of repair
If a specialized tool is used to bend the bending spring for disassembly, then the bearing pin can be released, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The bearing pin serves a dual function: it both secures itself in the locking position and releases the securing element during disassembly. By inserting the bearing pin at a different angle or position, it automatically actuates the securing element to the release position, enabling tool-free disassembly and significantly reducing maintenance time
Solution Approach 2:
The securing element is designed with dynamic movement capability between locking and release positions. The cam-shaped interaction allows the system to transition between states based on the insertion angle of the bearing pin, providing flexibility and ease of operation without requiring specialized tools
3Reliability
If the securing element is always in contact with the bearing pin, then securement is maintained, but accidental release may occur
Solution Approach 1:
The spiral spring applies preliminary force to maintain the securing element in the locking position, pre-loading the system to ensure securement. This preliminary action ensures that the bearing pin remains firmly secured during normal operation
Solution Approach 2:
The system transitions from a static contact state to a dynamic state where the bearing pin can intentionally actuate the securing element. By changing the insertion angle or position, the bearing pin can move the securing element from the locking position to the release position, enabling intentional release when needed while maintaining security during normal use
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
Facilitates easy, secure, and tool-free assembly and disassembly of the bearing pin, providing a clear visual indication of the locking state, thus simplifying the process and preventing accidental release.
Implementation Method 1
a spiral spring (7) acting on the securing element (2) in order to pretension the securing element (2) towards the sliding body (1)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The sliding element has a sliding body (1) and a safety element (2). The sliding body has a guidance (3) for a bearing journal. The sliding body and the safety element are moved together in a locking position and a released position. The safety element and the bearing journal locks in the guidance in the locking position and releases in the released position.