Display Link Assembly With Replaceable Gear for Lower Repair Cost
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Solution Overview
Problem
The existing display devices with integrally formed gears face challenges in manufacturing costs due to high stiffness material requirements and increased repair costs when gears break, as the entire link needs to be replaced.
Innovation Solution
A display device design featuring a link assembly with a gear coupled to an arm, where the gear is fastened using a fastening member, minimizing material costs and allowing for easier assembly and replacement of individual components, thereby reducing manufacturing and service costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If gears are formed integrally with links using high stiffness material, then the stiffness of the gear is improved, but the manufacturing cost and material cost of the link are increased
Solution Approach 1:
The link is divided into two separate components: the link body and the gear. The gear is coupled to the link body through a fastening member (such as a screw or rivet) rather than being integrally formed. This segmentation allows the gear to be made from high stiffness material while the link body can use less expensive material, thereby reducing overall manufacturing cost while maintaining gear stiffness.
2Stability of the object's composition
If gears are formed integrally with links, then the structural integrity is improved, but the repair cost increases when gear breaks
Solution Approach 1:
By separating the gear from the link body through a detachable fastening member, the design enables independent replacement of the gear. When the gear breaks or wears out, only the gear needs to be replaced rather than the entire link assembly, significantly reducing repair costs while maintaining structural integrity during operation.
3Strength
If high stiffness material is used for the entire link, then the stiffness of the gear is ensured, but the material cost of the link is increased
Solution Approach 1:
The high stiffness material is applied locally only to the gear portion where stiffness is critical for mechanical function, while the link body uses a different, less expensive material. This local quality approach ensures the gear has sufficient stiffness for its function while minimizing overall material cost of the link assembly.
Data Source
AI summary
The present embodiment may comprise: a display module; a link assembly connected to the display module; and a rotation mechanism connected to the link assembly so as to rotate the link assembly. In addition, the link assembly may comprise: a pair of links; and a link joint to which each link, of the pair of links, is rotatably connected. At least one link, of the pair of links, may comprise: an arm from which at least one gear coupling part protrudes; a gear; and a fastening member for fastening the gear to the gear coupling part. A first fastening hole may be formed in the gear coupling part; a second fastening hole, matching with the first fastening hole, may be formed in the gear; and the fastening member may couple the gear to the gear coupling part by being inserted in the first fastening hole and the second fastening hole.