Door Wing Locking Device with Elastomer Damping
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Solution Overview
Problem
Existing door wing locking devices require large installation space and non-adjustable opening angles, limiting the door's opening width and flexibility due to the absence of damping mechanisms and compact design.
Innovation Solution
A compact locking device with a C-shaped slide rail carriage, elastomer damping element, and adjustable locking angle, featuring a latching lever with a detent extension and beveled locking lug for enhanced holding force and damping, allowing for adjustable opening angles and reduced installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional locking device with rocker and multiple springs is used, then the door wing can be held open, but the installation space becomes large and the slide rail length increases
Solution Approach 1:
The patent combines the damping function and support function into a single elastomer element. The elastomer element simultaneously provides damping for the slider movement and supports the locking lever in its pivoting motion, eliminating the need for separate damping devices and spring elements. This merging of functions significantly reduces the overall device dimensions and slide rail length while maintaining the door wing holding capability.
Solution Approach 2:
The elastomer element serves multiple functions within the locking device: it acts as a damping element for the slider, provides support for the locking lever during pivoting, and contributes to the overall structural stability. This multi-functionality allows the device to maintain reliability with a compact design, resolving the contradiction between holding function and installation space.
2Reliability
If a large slide rail is used to accommodate traditional locking devices, then the door opening width is limited, but the locking device can hold the door open
Solution Approach 1:
The locking device position along the slide rail is adjustable, allowing the locking angle of the door wing to be varied. The carriage can be positioned at different locations on the slide rail, and the locking device can be fastened at any position, enabling flexible adjustment of the door opening angle. This dynamic adjustability accommodates different door sizes and opening requirements while maintaining the holding capability.
Solution Approach 2:
The locking device is divided into separable components: the carriage that moves along the slide rail, the locking lever assembly, and the elastomer element. This segmentation allows the carriage to be positioned at different locations to adjust the locking angle, while the locking lever and elastomer element provide the holding and damping functions. The modular design enables adaptability to various door configurations.
3Ease of operation
If damping devices are added to the locking device, then the slider movement can be dampened, but the device complexity and installation space increase
Solution Approach 1:
The elastomer element integrates the damping function with the structural support function. As the slider moves during door opening and closing, the elastomer element absorbs and dissipates energy through its elastic deformation, providing damping. Simultaneously, it supports the locking lever in its pivoting motion. This single element performs both functions, eliminating the need for separate damping devices and reducing structural complexity.
Solution Approach 2:
The elastomer element provides self-damping through its inherent elastic properties during the normal operation of the locking device. As the locking lever pivots and the slider moves, the elastomer element automatically dampens these movements through its elastic deformation and recovery, without requiring additional active damping mechanisms or complex control systems.
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 a larger maximum door opening angle, reduced slide rail length, and adjustable damping and holding force, accommodating various door sizes and types, including revolving doors, windows, and flaps.
Implementation Method 1
a spring element, which is advantageously designed as an elastomer element, is provided, which is arranged in the latching lever
Implementation Method 2
interacts with the elastomer element to dampen the movement of the slider
Implementation Method 3
The elastomeric element can be preloaded with an adjusting screw, with which the elastomeric element can be squeezed and is thus supported more strongly on the base of the C-shaped slide rail
Implementation Method 4
The preload of the elastomeric element can be adjusted with an adjusting screw that can be adjusted along a slot, whereby the elastomeric element is squeezed
Implementation Method 5
The latching hook arranged on the locking extension slides up more easily and thus the locking of the locking element of the slider into the locking device is facilitated
Data Source
Figure 1~3
Figure 4~6
AI summary
The device (8) has a door closer (4) connected with a sliding arm (6). A slider (7) is arranged at the sliding arm and guided into a sliding rail (5). A locking element is arranged at the slider. The locking element combines together with a locking extension for fixing the slider and for locking a door leaf (2). A locking lever is pivotably mounted at carriages in a rotary bearing on one end. An elastomeric element is arranged in the locking lever, retains force of the locking device and damps a movement of the door leaf.