Display Device Fitting Structure With Pre-Fit Stepped Portion
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Solution Overview
Problem
Conventional display screen mounting systems experience incomplete locking of the position-limiting device due to a higher than ideal mounting height, leading to deformation and warping when subjected to parallel forces, as the gap between the base and rear casing increases.
Innovation Solution
A fitting structure featuring a position-limiting device with a pre-fitting stepped portion, a threaded portion, and a relief groove portion, where the relief groove's height is precisely set to ensure complete locking, allowing the stepped portion to contact the fixing face, thereby preventing movement and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the position-limiting device is mounted at a higher mounting height, then the base can be secured to the rear casing, but the position-limiting device cannot completely secure the base, causing gaps to increase and deformation to occur
Solution Approach 1:
The pre-fitting stepped portion is designed to preliminarily position the position-limiting device at the correct height before final threading. This preliminary positioning action ensures that when the threaded portion is engaged, the mounting height is already optimized, preventing both excessive height (which causes incomplete securing) and potential deformation issues
Solution Approach 2:
The invention changes the mounting height parameter by introducing the pre-fitting stepped portion that physically limits the position-limiting device to an optimal height. This parameter modification ensures the device is mounted at precisely the right height to completely secure the base without causing deformation, resolving the contradiction between securing reliability and mounting precision
2Strength
If the position-limiting device is used to secure the base, then the base can be fixed to the rear casing, but the locking is incomplete and gaps increase under force
Solution Approach 1:
The pre-fitting stepped portion performs a preliminary positioning action that ensures the position-limiting device is at the correct height before threading begins. This preliminary action guarantees that when the threaded portion engages with the relief groove portion, the locking is complete and stable, preventing gap formation under applied forces
Solution Approach 2:
The pre-fitting stepped portion acts as an intermediary element between the position-limiting device and the base. It mediates the positioning process by physically limiting the depth of insertion, ensuring that the device locks at the precise height needed to maintain gap stability under force while achieving complete locking strength
3Reliability
If multiple position-limiting devices are used to ensure complete locking, then the base can be securely fixed, but the complexity of the structure increases
Solution Approach 1:
The invention changes the structural parameter by adding the pre-fitting stepped portion to a single position-limiting device. This modification enables one device to achieve complete and reliable locking that would otherwise require multiple devices, thereby maintaining locking reliability while reducing structural complexity
Solution Approach 2:
The position-limiting device is segmented into distinct functional portions: the pre-fitting stepped portion for positioning and the threaded portion for locking. This segmentation allows each portion to perform its specific function optimally, enabling a single device to achieve reliable locking without increasing overall structural complexity
Data Source
AI summary
A fitting structure and a display device are provided. The fitting structure comprises a first device (22), a second device (33) and a position-limiting device (11) configured to fixedly connect the first device (22) and the second device (23), wherein the position-limiting device (11) comprises a pre-fitting stepped portion (113) which is provided in the first device (22), and a threaded portion (111) and a relief groove portion (112) which are provided in the second device (33), and the relief groove portion (112) is arranged between the pre-fitting stepped portion (113) and the threaded portion (111); a height of the relief groove portion (112) is set so that the pre-fitting stepped portion (113) is in contact with a fixing face which is an end face of the second device (33) which is fixedly connected by the position-limiting device (11). The fitting structure can solve a problem of a gap between an end face of the base and an end face of the rear casing being increased when the base is subjected to a force.