Tablet Hand Strap With Central Adhesive Load Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic tablets are difficult to hold due to their weight and size, leading to discomfort and the risk of slipping, especially when using the touch screen with one hand while trying to support the device with the other, which is typically weaker.
Innovation Solution
A fastening device comprising self-adhesive surfaces with a flexible strip connected via a central connector, distributing traction forces evenly and allowing for ergonomic grip and balance, with optional self-gripping elements for secure holding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hand strap is attached to secure the tablet to the user's hand, then the tablet can be prevented from falling, but the device becomes bulkier and less comfortable
Solution Approach 1:
The fastening device is divided into separate components: a self-adhesive base that attaches to the tablet and a flexible strip that wraps around the hand. This segmentation allows each component to be optimized independently - the adhesive base remains small and flat while the flexible strip provides the necessary securing function, reducing overall bulkiness compared to integrated strap designs.
Solution Approach 2:
A self-adhesive intermediate layer is introduced between the tablet and the flexible strip. This adhesive mediator enables secure attachment while maintaining a thin profile, avoiding the need for bulky mechanical fastening mechanisms. The adhesive transfers forces effectively while keeping the device compact and comfortable.
2Ease of manufacture
If the connector is positioned at the edge of the self-adhesive surface, then the flexible strip can be attached, but the traction force creates stress concentration that may cause detachment
Solution Approach 1:
The connector is strategically positioned at the center of the self-adhesive surface rather than at the edge. This central positioning creates a local quality distribution where the traction force is applied at the point of maximum adhesive support, preventing stress concentration at the edges and ensuring more uniform stress distribution across the adhesive interface, thereby enhancing bonding reliability.
3Ease of operation
If the user holds the tablet at one side, then the tablet can be gripped, but the weight creates a large moment that generates muscle tension
Solution Approach 1:
The flexible strip acts as a counterbalancing element that wraps around the hand and provides support opposite to the tablet's weight. By distributing the supporting force across multiple contact points on the hand rather than relying on a single grip point, the system creates a counterbalancing effect that reduces the moment arm and consequently decreases the muscle tension required to hold the tablet.
4Reliability
If the self-adhesive surface area is increased to improve bonding, then the connector positioning becomes less critical, but the device becomes larger and less comfortable
Solution Approach 1:
Rather than increasing the overall adhesive surface area, the invention optimizes the local quality of adhesive distribution by positioning the connector at the center. This central positioning ensures that the adhesive material is utilized most efficiently, with the highest stress concentration area (under the connector) having the maximum adhesive support. This approach maintains bonding reliability while keeping the adhesive area compact and comfortable.
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 solution provides a comfortable, secure, and easy-to-use grip for electronic tablets, reducing muscle tension and preventing accidental drops, while being simple to apply and robust in use.
Implementation Method 1
a self-adhesive having a self-adhesive surface and a connecting surface which is located opposite the self-adhesive surface, the fastening device being characterized in that the flexible strip is linked to the self-adhesive by means of a connector disposed in an area on the connecting surface which is facing a central area of the self-adhesive surface so that a traction force exerted on the flexible strip is distributed substantially homogeneously over the self-adhesive surface
Data Source
AI summary
A fastening device includes a self-adhesive part having a self-adhesive surface and a connecting surface which is situated on the opposite side from the self-adhesive surface. A flexible strip extends from the connecting surface of the self-adhesive part. The flexible strip is joined to the self-adhesive part by means of a connecting element disposed in a region on the connecting surface. This region faces a central region of the self-adhesive surface. Thus, a traction force exerted on the flexible strip is distributed substantially uniformly over the self-adhesive surface.