Screwless Rear Cover Fastening With Tooth-Shaped Elastic Clamp
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Solution Overview
Problem
Current fastening methods for products like in-vehicle and desktop screens require screw holes to be hidden, leading to increased material and production costs due to the need for additional decorative strips or nameplates, which cannot be easily reworked.
Innovation Solution
A fastening device comprising a back plate, a rear cover with a protruding portion, and an elastic piece with a tooth-shaped opening, allowing for interference assembly without the need for additional assembly parts like screws, by using the elastic piece to clamp and fix the rear cover to the back plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional assembly parts (screws) are used to fasten the rear cover to the back plate, then the fastening strength is improved, but the device complexity and material cost increase
Solution Approach 1:
The elastic piece integrates multiple functions into a single component: it provides fastening through the tooth-shaped structure that engages with the protruding portion, offers cushioning through its elastic material properties, and eliminates the need for separate screws or fasteners. This merging of functions reduces device complexity while maintaining fastening strength.
Solution Approach 2:
The elastic piece with its tooth-shaped opening structure automatically engages with the protruding portion of the rear cover through elastic deformation and interference fit, creating a self-fastening mechanism that does not require additional screws or complex assembly procedures. The elastic nature allows for self-adjustment and secure engagement.
2Reliability
If additional assembly parts (screws) are used to fasten the rear cover to the back plate, then the fastening reliability is improved, but the material cost and production cost increase
Solution Approach 1:
The invention extracts and eliminates the need for separate screws and fasteners from the assembly, using only the elastic piece with its integrated tooth-shaped structure. This reduction in the number of components directly reduces material cost while the elastic engagement mechanism maintains fastening reliability.
Solution Approach 2:
The elastic piece is designed as a simple, inexpensive component made from elastic material that can be easily manufactured and replaced if needed. Its simplicity and use of common elastic materials make it more cost-effective than metal screws and fasteners, reducing both material and production costs.
3Shape
If nameplates or decorative strips are added to cover screw holes, then the appearance quality is improved, but the production cost increases and reworkability decreases
Solution Approach 1:
The invention completely removes the need for nameplates or decorative strips by eliminating screw holes through the screwless fastening mechanism. The elastic piece engages with the protruding portion in a way that does not require visible fasteners or cosmetic coverings, thereby simplifying the manufacturing process and reducing costs.
Solution Approach 2:
The fastening mechanism is designed to be both functional and aesthetically pleasing without requiring additional cosmetic components. The elastic piece and protruding portion engagement can be designed to be concealed or integrated into the overall structure, providing both fastening and appearance functions through the basic components themselves.
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 material and production costs by eliminating the need for screws and other assembly parts, while maintaining a visually appealing design by using the elastic piece's tooth-shaped structure for clamping and fixing the rear cover to the back plate.
Implementation Method 1
The elastic piece is arranged between the back plate and the rear cover. The elastic piece has a first opening, and the protruding portion passes through the first opening, and the first opening is a tooth-shaped structure.
Data Source
AI summary
A fastening device including a back plate, a rear cover and an elastic piece is provided. The rear cover is arranged on the back plate and has a protruding portion. The elastic piece is arranged between the back plate and the rear cover. The elastic piece has a first opening, and the protruding portion passes through the first opening, and the first opening is a tooth-shaped structure.