Shutter Locking Mechanism with Spring-Loaded Rod
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Solution Overview
Problem
Existing closure devices for protecting optical device lenses, such as cameras, are complex and expensive to produce, and simpler systems can only lock the closure cap in a closed position, failing to provide locking in both closed and open positions.
Innovation Solution
A compact locking system comprising a support with transverse projections, a rotatable closure cap, and a locking device with a rod and tubular hole, utilizing frustoconical surfaces and a helical spring to allow locking in multiple positions, reducing production complexity and enabling secure closure and access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing device is designed to lock the shutter cover in both open and closed positions, then the locking capability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the locking mechanism directly into the hinge assembly. The hinge includes a hinge body with a locking element that can engage with a recess in the shutter cover, combining two functions (hinging and locking) into a single integrated component. This eliminates the need for separate locking devices while providing reliable locking in both open and closed positions.
Solution Approach 2:
The hinge assembly serves multiple functions: it provides the rotational pivot for the shutter cover, maintains the cover in the open position through the locking element, and enables smooth closing motion. The spring mechanism within the hinge provides both the force to hold the cover open and the controlled release during closing, making the hinge a universal component that handles both positioning and locking tasks.
2Ease of manufacture
If a simple hinge and latch system is used, then the manufacturing cost is reduced, but the locking capability in both positions is lost
Solution Approach 1:
The patent combines the latch function directly into the hinge body. The locking element is an integral part of the hinge assembly, eliminating the need for separate latch components. This integration maintains manufacturing simplicity while achieving reliable locking in both open and closed positions, as the locking element engages with a simple recess in the shutter cover.
Solution Approach 2:
The hinge assembly performs multiple functions including providing rotational movement, maintaining the open position through its locking element, and enabling controlled closing. This multi-functional design achieves reliable locking capability without requiring complex separate locking mechanisms, keeping manufacturing costs low while improving functionality.
3Device complexity
If a compact locking system is designed, then the device complexity is reduced, but the locking reliability may be compromised
Solution Approach 1:
The locking mechanism is merged into the hinge assembly, creating a compact integrated system. The locking element within the hinge body engages with a recess in the shutter cover, providing reliable locking without requiring separate locking components. This integration reduces device complexity while maintaining locking reliability through the simple yet effective engagement geometry.
Solution Approach 2:
The compact hinge assembly serves as both the pivot mechanism and the locking device. The spring-loaded locking element provides reliable engagement in the open position, while the same hinge structure enables smooth closing and latching in the closed position. This multi-functional compact design achieves reliable locking without increasing device complexity.
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
The solution provides a cost-effective, compact locking mechanism that securely locks the closure cap in various positions, enhancing usability and reducing production costs while maintaining operational simplicity.
Implementation Method 1
a locking device with a rod and tubular hole, utilizing frustoconical surfaces and a helical spring
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The present invention relates to a sealing device comprising: a mounting (12); a sealing cover rotatably movable relative to the mounting; and a device (40) for locking the sealing cover. The locking device comprises: a rod (42) translatable relative to the mounting, said rod including an abutment (54); a counter-abutment (72) supported by the sealing cover; and a compression spring (64) arranged along the second axis, wherein said spring keeps the abutment engaged with the counter-abutment. The abutment and the counter-abutment are configured such that said engagement locks the rotation of the sealing cover in order to hold said cover in a locked position. Compression of the spring releases the abutment from engagement with the counter-abutment, thereby allowing the sealing cover to rotate.