Pop-up Flash Module Linkage Mechanism for Compact Camera Design
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Solution Overview
Problem
Modern cameras require a compact pop-up flash module that can open and close efficiently within a limited space, as existing designs often involve numerous elements that complicate this process.
Innovation Solution
A flash module comprising a flash, a base, a solenoid, a linkage bar, a hook, and elastic members, which utilize a solenoid to retract the flash and a hinge mechanism to rotate it, allowing for minimal components and vertical arrangement to reduce size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a built-in pop-up flash uses traditional opening mechanisms, then the flash can be opened and closed, but the number of elements increases and the space required increases
Solution Approach 1:
The patent combines multiple functions into fewer components. The linkage bar integrates the function of connecting the flash to the base and providing the mechanical advantage for opening. The hook combines the function of latching the flash in the open position and providing a pivot point. This merging reduces the total number of elements compared to traditional mechanisms that would separate these functions into multiple independent components.
Solution Approach 2:
The linkage bar serves multiple functions: it connects the flash to the base, provides mechanical leverage for opening, and guides the motion path. The hook serves dual purposes as both a latch mechanism and a pivot point for rotation. This multi-functionality reduces the number of dedicated components needed, directly addressing the contradiction between fewer elements and operational effectiveness.
2Length of stationary object
If the flash module uses more elements for opening and closing, then the mechanism may be more robust, but the thickness and size of the camera increase
Solution Approach 1:
The patent utilizes vertical space within the camera body by arranging the flash to rotate upward from a horizontal accommodation position. The hinge mechanism is positioned to allow this vertical motion, effectively using the thickness dimension of the camera to accommodate the flash's travel path. This dimensional approach allows a reliable opening mechanism without increasing the camera's overall thickness.
Solution Approach 2:
The flash nests within the camera body when closed, fitting into an accommodation space formed by the base. The linkage bar and hook are positioned to engage with features on the flash and base respectively, creating a compact nested arrangement when the flash is closed. This nesting allows the mechanism to be space-efficient while maintaining reliability through proper engagement of components.
3Volume of stationary object
If the flash module is designed to be compact, then the camera size is reduced, but the space for mechanical elements is limited
Solution Approach 1:
The mechanism uses dynamic motion paths to maximize space efficiency. The flash rotates on a hinge rather than translating linearly, allowing it to sweep through an arc that fits within the available volume. The linkage bar changes its orientation and leverage ratio dynamically during the opening motion, allowing compact packaging while providing sufficient force. This dynamic approach allows the mechanism to fit in limited space without excessive complexity.
Solution Approach 2:
The accommodation space for the flash is positioned asymmetrically within the camera body, optimized for the specific rotation path of the hinge mechanism. The linkage bar is positioned to engage the flash at an asymmetric point that maximizes mechanical advantage within the available space. This asymmetric arrangement allows the mechanism to be compact while maintaining reliability, avoiding the need for symmetric spacing that would waste volume.
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 flash module to open and close with fewer elements, minimizing the thickness and size of the camera while maintaining efficient operation, allowing for synchronized flash activation with the camera.
Implementation Method 1
The solenoid comprises an armature with an aperture and attracts the armature in a first position if the flash is at the close position.
Data Source
AI summary
Embodiments of this invention provide a flash module and an image-capturing apparatus having the flash module. The flash module includes a flash, a base, a solenoid, a linkage bar, a hook, a first elastic member, and a second elastic member. When necessary, the elements of the flash module perform a process to automatically move the flash to an open position.