Cosmetic Compact Hinge With Removable Pans and Segmented Spine
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Solution Overview
Problem
Cosmetic compacts with plastic hinges are prone to breaking under stress, and conventional manufacturing processes require separate labeling steps, increasing costs and vulnerability to damage.
Innovation Solution
A cosmetic compact design featuring a spine with extensions that allows for an unlocked and locked position, incorporating outer wrap material into the assembly process, and using magnets for secure closure, enabling easy replacement of pans and enhancing hinge durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional plastic hinges are used to connect the cover and base, then the compact can be assembled easily, but the hinge is prone to breaking under stress
Solution Approach 1:
The hinge is divided into two separate components: a first hinge portion integrated into the base and a second hinge portion integrated into the cover. These segments connect through a hinge connection that allows relative movement, distributing stress across multiple connection points rather than relying on a single plastic hinge, thereby improving durability while maintaining ease of assembly
Solution Approach 2:
The hinge connection merges the first and second hinge portions into a unified rotating joint mechanism. This combined structure allows the cover and base to rotate relative to each other while sharing the mechanical load, preventing the single-point failure that plagues conventional plastic hinges
2Productivity
If labeling is performed as a separate step after assembly, then the compact can be manufactured, but the cost increases considerably
Solution Approach 1:
The labeling operation is merged with the assembly process by applying labels to components (cover, base, or hinge portions) before they are final assembled. This integration allows labeling and assembly to occur in a unified manufacturing flow, eliminating separate labeling steps and reducing overall manufacturing cost while maintaining productivity
Solution Approach 2:
Labeling is performed as a preliminary action during the assembly process rather than as a post-assembly step. By pre-applying labels to components before final assembly, the manufacturing process streamlines operations and reduces the number of discrete steps required, thereby lowering costs while preserving production efficiency
3Reliability
If pans are secured with adhesive materials, then the pans are held in place, but the replacement of pans becomes difficult
Solution Approach 1:
The pan retention system transitions from a static adhesive bond to a dynamic mechanical locking mechanism. The extensions can be positioned to engage with the base structure, providing secure retention through reversible mechanical interference rather than permanent adhesive bonding, enabling easy pan replacement while maintaining security during use
Solution Approach 2:
The adhesive material is extracted from the pan retention system and replaced with a mechanical locking mechanism using extensions and structural engagement. This removal of adhesive allows for non-destructive, tool-free pan replacement while maintaining secure pan retention through the mechanical extension-base interaction
4Reliability
If the hinge is made more durable, then the compact structure is strengthened, but the complexity of the hinge increases
Solution Approach 1:
The hinge is segmented into two portions (first in base, second in cover) that connect through a simple hinge connection interface. This segmentation allows each portion to be optimized for its specific function while maintaining overall structural integrity, achieving enhanced durability without requiring complex hinge mechanisms
Solution Approach 2:
The hinge connection serves multiple functions: it connects the cover and base, allows relative rotation, and provides structural support. By designing the hinge portions to fulfill multiple roles simultaneously, the system achieves durability without adding unnecessary complexity, as the same structural elements perform several functions
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 design provides a more durable hinge, allows for easier assembly with integrated labeling, and facilitates the replacement of pans, reducing costs and improving the compact's structural integrity.
Implementation Method 1
The cover and the base can include magnets for magnetically securing the cover to the base when the cosmetic compact is in a closed position
Data Source
AI summary
A cosmetic compact including a hinge, the hinge including a spine having at least two extensions and at least two protrusions extending from the at least two extensions; a base, the base including at least two receivers and at least one opening configured to receive at least one pan; and a cover, wherein the cover and the base are connected to one another via the hinge. The spine having (1) a locked position wherein the extensions are configured to wrap around the base and the at least two protrusions are configured to be removably locked into the at least two receivers thereby securing the at least one pan within the at least one opening, and (2) an unlocked position wherein the at least two protrusions are configured to be removed from the at least two receivers thereby providing access to the at least one opening.