Sliding Door Manual Unlocking Unit with Multi-Abutment Lever
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Solution Overview
Problem
Existing manual unlocking units for sliding doors with Bowden cables are limited in actuating element disposition, lacking flexibility in structural conditions, safety, and maintenance accessibility.
Innovation Solution
A manual unlocking unit with a pivotable lever element and multiple abutments allows for various actuating elements, such as push-buttons or traction rods, to be used, enabling flexible disposition and maintenance-friendly design by using offset abutments and adjustable components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single disposition possibility for the actuating element is used (e.g., traction rod), then the structure is simple, but the adaptability to different structural conditions and manipulation requirements is reduced
Solution Approach 1:
The lever element is designed with multiple abutments (at least two) that can receive different actuating elements, making the same lever element capable of working with various actuation mechanisms (traction rod, push-button, knob, etc.). This universal design allows the unlocking unit to adapt to different structural conditions and manipulation requirements without requiring different lever elements.
Solution Approach 2:
The invention introduces variability in the actuating element disposition through the multiple abutments on the lever element. The abutments are positioned at different locations and orientations, allowing dynamic selection of the appropriate actuating element based on installation conditions. This dynamic adaptability resolves the contradiction between simplicity and versatility.
2Ease of repair
If the Bowden cable connection is fixed to the mounting plate, then the installation is simple, but the maintenance accessibility is reduced due to the need to release the connection
Solution Approach 1:
The invention extracts the Bowden cable connection from the mounting plate and relocates it to the lever element itself. The cable connects to the lever element through the abutments, which are part of the lever element assembly. This extraction allows the inner covering to be swung out for maintenance without requiring release of the cable connection, as the connection remains integrated with the lever element that can be independently accessed.
3Ease of operation
If only one type of actuating element is supported, then the device is simple, but the ease of operation for different manipulation requirements is reduced
Solution Approach 1:
The lever element is designed as a universal component that can accommodate multiple types of actuating elements (traction rod, push-button, knob, etc.) through its multiple abutments. Each abutment is configured to receive a specific type of actuating element, allowing the same lever element to be operated in different ways depending on the manipulation requirements. This resolves the contradiction by providing operational flexibility without requiring multiple different lever elements.
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 the use of different actuating elements based on structural and safety requirements, improving operational flexibility and maintenance accessibility without altering the unlocking unit's configuration.
Implementation Method 1
a cable (4) having a first end connectable to an unlocking device (1, 2) for the sliding door and a second end connected to the lever element (3), the cable (4) being tensioned to actuate the unlocking device (1, 2)
Implementation Method 2
a return spring (27), wherein the pivoting path for the actuation of the push-button (8) or of the traction rod (10), as well as for the charging through the return spring (27), is limited by stop dogs
Data Source
AI summary
A manual unlocking unit for a sliding door is disclosed. The unlocking unit includes a pivotable lever element comprising a plurality of abutments; a cable having a first end connectable to an unlocking device for the sliding door and a second end connected to the lever element, the cable being tensioned to actuate the unlocking device; and an actuating element actable on at least one of the plural abutments for pivoting the lever element. Each of the plural abutments is configured for receiving a tension or pressure actuating force from the actuating element.