Snap-Fit Assembly Structure With Integrated Positioning and Locking
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Solution Overview
Problem
Conventional assembly structures for electronic equipment require a large space for separate positioning and engagement portions, leading to inefficiencies in assembling resin panels to bodies using snap-fit engagement.
Innovation Solution
An assembly structure that integrates a base with an elastically-deformable engagement portion and a positioning hole, where the engagement portion is connected to the base, and a locking portion with a projection that inserts into the hole, allowing for simultaneous positioning and fixing of parts, reducing the required space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate positioning portion and engagement portion are provided, then positioning accuracy is improved, but the required space increases
Solution Approach 1:
The patent combines the positioning portion and engagement portion into a single integrated assembly structure. The positioning protrusion and engagement protrusion are formed as integrated features on the same component, eliminating the need for separate positioning and engagement elements. This merging maintains positioning accuracy while significantly reducing the space required for the assembly structure.
Solution Approach 2:
The assembly structure is designed to perform multiple functions simultaneously: the positioning protrusion provides positioning accuracy, while the engagement protrusion provides fixing functionality. By making the assembly structure multi-functional, the patent eliminates the need for separate dedicated positioning and engagement components, thereby reducing the overall space required.
2Reliability
If separate positioning pin and engagement portion are used, then positioning and fixing functions are achieved, but device complexity increases
Solution Approach 1:
The patent merges the positioning pin and engagement portion into a single integrated assembly structure. The positioning protrusion and engagement protrusion are formed as unified features on the same component, reducing the number of separate parts from two (positioning pin + engagement portion) to one integrated structure, thereby simplifying the device while maintaining both positioning and fixing functions.
Solution Approach 2:
While merging components, the patent maintains functional segmentation within the integrated structure by providing distinct positioning protrusions and engagement protrusions. This internal segmentation ensures that each function (positioning and fixing) is clearly defined and performed by specific features within the unified structure, maintaining reliability without increasing overall 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
This solution reduces the space needed for positioning and fixing, enhances workability by integrating positioning and engagement functions, and contributes to product miniaturization by eliminating the need for separate spaces for these components.
Implementation Method 1
an engagement portion (15) that is elastically-deformable and protrudes from the base (14)
Data Source
AI summary
An assembly structure for assembling a first part to a second part includes a first assembly portion provided in the first part and a second assembly portion provided in the second part. The first assembly portion includes a base, an engagement portion that elastically-deformable and protrudes from the base, and a hole formed in a circumference of a connection portion at which the engagement portion is connected to the base. The second assembly portion includes a locking portion that is engaged with the engagement portion to lock the first and second assembly portions together, and a projection that is inserted into the hole. In a state in which the projection is inserted into the hole, the engagement portion is engaged with the locking portion.