Tablet Stand Frame With Stepped Rotation and Replaceable Hand Strap
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Solution Overview
Problem
Prior stand frames for tablet devices are prone to looseness and vibration, leading to reduced lifetime, and the hand strap is non-replaceable and susceptible to wear, making them impractical for long-term use.
Innovation Solution
A multifunctional stand frame that uses balls and recesses to securely position the disk and frame, allowing step-by-step rotation for stable support, and features a replaceable hand strap for improved usability and compatibility with external supporting objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the disk is buckled to the annular recess by using the buckle, then the disk is rotatable with respect to the seat continuously to various positions, but the frame body is easy to loose and thus difficult to be fixed on a specific position
Solution Approach 1:
The patent applies the dynamics principle by implementing a rotation mechanism that can switch between two states: continuous rotation during adjustment phase, and step-by-step positioning during fixation phase. The ball and recess structure enables the disk to rotate continuously when balls are not engaged, then lock into specific positions when balls engage with recesses, resolving the contradiction between continuous rotatability and fixing stability
Solution Approach 2:
The patent implements periodic action through the ball-and-recess locking mechanism. As the disk rotates, balls periodically engage with recesses at specific angular positions, creating discrete locking points. This periodic engagement allows the frame body to be firmly fixed at multiple predetermined angles while maintaining the ability to rotate between positions, thus resolving the contradiction between continuous rotation and stable fixation
2Reliability
If the disk is retained by the ball and the recess of the seat, then the disk is retained at specific location so as not to be loose, but the rotation is step by step rather than continuous
Solution Approach 1:
The system dynamically transitions between continuous rotation mode and stepped positioning mode. During initial adjustment, the disk can rotate continuously as balls pass over recesses without engagement. Once a ball engages with a recess, the system locks into a stable positioned state. This dynamic behavior allows both continuous rotation capability and stable fixation to coexist, resolving the apparent contradiction
3Duration of action of stationary object
If the hand strap is fixed to two ends of the disk, then it provides continuous support, but it is unreplaceable and easy to wear or be dirt
Solution Approach 1:
The hand strap system is segmented into a permanent mounting structure on the disk and a replaceable strap component. The mounting structure includes fixed attachment points on the disk, while the hand strap itself is designed as a separate, removable element that can be easily replaced when worn or dirty. This segmentation maintains continuous support functionality while enabling easy replacement of the consumable strap portion
Solution Approach 2:
The hand strap is designed as a disposable or replaceable component that can be discarded when worn or contaminated, and recovered/replaced by users. The permanent mounting structure on the disk is retained and reused, while the strap portion is replaced periodically. This approach maintains continuous support functionality while enabling easy maintenance and hygiene
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 stand frame provides stable support, prolongs its lifetime, and allows for adjustable angles and hanging options, with a replaceable hand strap enhancing user convenience and compatibility with external devices.
Implementation Method 1
each ball has a respective spring which installed at an upper side of the ball and is confined with the installing hole; by elasticity of the spring, the ball may expose out of the disk or reduce into the installing hole
Data Source
AI summary
A multifunctional stand frame for a tablet electronic device comprises a seat; a bottom of the seat serving to connect a back side of a tablet electronic device; the seat having a plurality of retaining holes; in installing, the seat being connected to the tablet electronic device by using a connecting unit to pass through the retaining hole of the seat and a locking hole of the tablet electronic device; so that the seat is installed to the tablet electronic device; a disk being positioned above an upper side of the seat and being rotatably installed to the seat; a center of the disk having a through hole; a fixing shaft extending from an upper side of the seat and penetrating through the through hole of the disk; the disk being loosely arranged to the seat through the retaining hole and being rotatable with respect to the fixing shaft.