Shading Device Housing Locking Mechanism
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Solution Overview
Problem
Existing shading devices, such as vertical awnings, face challenges with secure attachment to supporting structures due to high loads from wind or ice, leading to potential detachment and deformation of locking mechanisms under external forces.
Innovation Solution
A shading device with an adjustable locking bar that can be moved into a locked position to securely clamp the housing against the support device, using a guide rail with a recess for the locking bar and wedge surfaces for compressive force, and a fixing device to prevent unintentional loosening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the housing is attached to the supporting structure by means of a locking connection, then the installation is quick and requires no additional tools, but the locking connection may come loose under high loads from wind or ice
Solution Approach 1:
The housing is pre-equipped with integrated locking elements (clamping jaws with wedge surfaces) that are ready to engage with the supporting structure. The locking mechanism is designed to be activated simply by inserting the housing into the support structure, with the clamping jaws automatically engaging through the wedge action of the projection, eliminating the need for additional tools or assembly steps during installation.
Solution Approach 2:
The locking mechanism utilizes wedge surfaces (inclined planes) where the projection with wedge surfaces engages with the clamping jaws. The wedge geometry converts the insertion force into a strong clamping force, creating a self-locking mechanism that securely holds the housing to the supporting structure under high loads from wind or ice.
2Reliability
If additional screws are used to hold the housing to the supporting structure, then the attachment security is improved, but the installation becomes cumbersome and time-consuming
Solution Approach 1:
The locking function and the attachment function are merged into a single integrated locking connection system. The clamping jaws and wedge surfaces are built into the housing structure itself, combining the securing mechanism with the housing rather than being separate components that require additional installation steps.
Solution Approach 2:
The locking mechanism is self-activating through the wedge action. When the housing is inserted into the supporting structure, the projection with wedge surfaces automatically engages the clamping jaws, creating the locking connection without requiring additional tools, screws, or manual adjustment by the installer.
3Device complexity
If the clamping jaw is exposed and sits unprotected on the clamping screw, then the device complexity is reduced, but the clamping jaw and clamping screw may deform under external loads
Solution Approach 1:
The protective function is merged with the structural components. The guide rail is designed to enclose and protect the locking bolt, while the housing structure itself provides protection for the clamping jaws. This integration of protection into the existing structure avoids adding separate protective components while maintaining simplicity.
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
Ensures secure and stable attachment of the housing to the support device, preventing detachment under external loads and allowing for easy assembly and disassembly.
Implementation Method 1
The locking bolt is guided in a guide during its adjustment movement, so that the operation of the locking bolt is simplified for a user
Implementation Method 2
a clamping jaw, which engages with the projection via wedge surfaces and holds the projection in the receptacle
Data Source
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AI summary
A shading device comprises a fabric that can be wound onto and unwound from a fabric roller. The fabric roller is housed in a casing that is attached to a support structure. A locking device includes at least one adjustable locking element that can be adjusted between a locked position, in which it positively engages the casing with the support structure, and a release position, in which the casing can be removed from the support structure. The locking element is a sliding and/or pivoting locking bolt, and the casing is clamped against the support structure by the locking bolt when the bolt is in its locked position.