Draft Shield Rail Spring Locking Mechanism
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Solution Overview
Problem
Existing draft shields for balances, especially those designed as accessories, face challenges in cost-effectiveness and ease of use, particularly when not exposed to contamination, as they often require complex manufacturing and quick-release features that are not justified for all applications.
Innovation Solution
A draft shield design featuring rail members with integrated spring elements and holder elements that allow for a form-locked or force-locked engagement of the front wall, enabling easy opening and closing of side walls and the top cover without the need for complex locking mechanisms, using projections and hollowed-out areas for secure attachment and easy detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex locking mechanisms are used to secure the front wall, then the attachment reliability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The spring element automatically engages with the holder element when the front wall is inserted, securing it without requiring manual operation of complex locking mechanisms. The system serves itself by using the insertion motion to compress the spring and trigger the locking action, eliminating the need for separate locking operations while maintaining secure attachment.
Solution Approach 2:
The invention replaces complex mechanical locking mechanisms with a simpler spring-element-based system. Instead of using multiple locking elements, levers, or cam mechanisms, the patent uses a spring element that flexes and engages with a holder element, substituting a sophisticated mechanical system with a more straightforward elastic-mechanical solution.
2Ease of operation
If quick-release features are implemented for easy cleaning access, then the ease of operation is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The spring element system allows the front wall to be easily released by simply pulling it outward, which automatically decompresses the spring and disengages the holder element. This self-service mechanism eliminates the need for separate release levers or complex quick-release features, providing easy cleaning access while maintaining simplicity.
Solution Approach 2:
Instead of requiring a positive action to lock the front wall (such as turning a locking element or pressing a button), the system inverts the approach by using a passive spring element that engages automatically upon insertion. The release is then achieved by simply reversing the insertion motion, making the operation intuitively simple while reducing mechanical complexity.
3Device complexity
If simple attachment mechanisms are used for the front wall, then the device complexity is reduced, but the attachment reliability deteriorates
Solution Approach 1:
The attachment mechanism is segmented into distinct functional elements: the spring element for providing engaging force, the holder element for forming the locking interface, and the projection on the front wall for engagement. This segmentation allows each component to be simple in design while collectively providing reliable attachment through their coordinated interaction.
Solution Approach 2:
The spring element introduces a dynamic parameter (elastic deformation) into the attachment mechanism. By changing the physical state of the spring from rigid to elastic, the system achieves both simplicity and reliability - the spring can be made with simple geometry but provides reliable engagement through its ability to deform and exert continuous engaging force on the holder element.
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
This design provides a cost-effective and user-friendly draft shield that can be installed on balances, offering secure attachment and easy access for cleaning or maintenance without the complexity and expense of previous solutions, suitable for a wide range of applications.
Implementation Method 1
each spring element (16) has a free end facing away from the rail member (3, 4) and exerts a spring force in a direction towards the holder element (17)
Data Source
AI summary
A draft shield (1) for a balance has a rear wall (2), a front wall (11), two side walls (9, 10), a top cover 8, and rail members (3, 4) which extend from the upper corners of the rear wall (2) to the upper corners of the front wall (11) and carry guide tracks (5, 6, 7) in which the top cover (8) and the side walls (9, 10) are slidably seated. According to the invention, each rail member (3, 4) includes at its front end a spring element and a holder element which are integrally connected to the rail members (3, 4) and are made of one piece with the latter. The spring elements and the holder elements are arranged on the rail members (3, 4) in such a way that the front wall (11) can be inserted between the spring elements (16) and the holder elements (17), and as a result of said insertion the front wall (11) will be secured to the rail members (3, 4 ).