Elastic Tissue Case Frame to Prevent Projection and Jamming
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Solution Overview
Problem
Conventional household tissue cases with sliding lids face issues of tissue projection and jamming during closure, and difficulty in accessing tissues deep under the frame member due to the frame member's wide opening configuration.
Innovation Solution
A household tissue case design featuring a casing with a dispensing opening and a sliding lid, where a frame member made of an elastic material is attached to the perimeter with staggered restricting portions forming a letter-Z shape, positioned off-center to control tissue projection and facilitate easy access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a frame member with a wide opening is used to facilitate tissue removal, then ease of operation is improved, but the tissue projection length increases causing jamming during lid closure
Solution Approach 1:
The frame member is segmented into multiple restricting portions (first, second, third restricting portions) that are spatially separated and staggered. This segmentation allows each portion to independently control tissue projection at different locations, preventing excessive projection and jamming while maintaining adequate opening for tissue removal.
Solution Approach 2:
The restricting portions are arranged asymmetrically with staggered positions rather than symmetrically. The first restricting portion is positioned at one location while the second and third restricting portions are positioned at different locations with offset coordinates. This asymmetric arrangement creates non-uniform tissue guidance that effectively controls projection length without creating jamming conditions.
2Reliability
If a lid member with a small area opening is used to prevent tissue jamming, then reliability is improved, but ease of operation deteriorates due to difficulty in accessing deep tissues
Solution Approach 1:
Different portions of the frame member have different functional qualities. The first restricting portion provides one type of constraint while the second and third restricting portions provide different constraint patterns. This local differentiation allows the frame to simultaneously prevent jamming in certain areas while maintaining accessibility in other areas, resolving the contradiction between reliability and ease of operation.
Solution Approach 2:
The restricting portions are arranged in a three-dimensional staggered configuration rather than a simple planar arrangement. By positioning the restricting portions at different depths and lateral positions, the invention creates multiple spatial layers of tissue guidance, allowing tissue removal from various angles while preventing excessive projection that would cause jamming.
3Stability of the object's composition
If the dispensing opening is positioned at the center, then structural symmetry is improved, but tissue removal from depth becomes difficult due to obstruction
Solution Approach 1:
The dispensing opening is deliberately positioned asymmetrically relative to the frame member, and the restricting portions are arranged in a non-symmetric staggered pattern. This asymmetric configuration removes the obstruction that would block access to deep tissues while maintaining adequate structural stability through the distributed arrangement of restricting portions.
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 effectively suppresses tissue projection without hindering deep tissue removal, ensuring smooth operation and preventing jamming during lid closure.
Implementation Method 1
the frame member being made of an elastic member
Data Source
AI summary
The length of a projection of a household tissue is suppressed without hampering the removal of household tissues situated at a depth under a frame member. The frame member (14) is attached to the perimeter of the dispensing opening (11). The frame member is made of elastic material. The opposite ends of the frame member in the short-side direction of the casing (10) in a plan view have restricting portions (14b) that extend in such directions as to cover the dispensing opening (11). The restricting portions (14b, 14b) are arranged so as not to overlap each other such that the tips thereof are staggered in the long-side direction of the casing in a plan view, thereby forming a letter-Z shaped cut in the frame member.