Buckle Mechanism Position Stability for Bio-information Measurement
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Solution Overview
Problem
The existing biological information measuring devices struggle with maintaining the correct position adjustment between the second plate frame member and the belt, leading to difficulties in reattaching the device to the wrist due to displacement during removal.
Innovation Solution
The device incorporates a buckle mechanism with a second plate part that extends beyond the first plate part, featuring a first fixing element on the inner surface and a second fixing element on the outer surface of the belt, along with engagement protrusions to securely attach the second plate frame member to the belt, ensuring accurate and reproducible position adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the belt is made annular by connecting the base end part and front end part with a buckle, then the device can be attached to the wrist, but the other end part of the second plate frame member may be displaced from the adjusted position when the hand is rubbed on the inner surface of the belt ring during attachment or removal
Solution Approach 1:
The buckle is divided into multiple plate frame members (first plate frame member, second plate frame member) that can move independently relative to each other. This segmentation allows the buckle to flex during attachment and removal operations, reducing stress on the connection between the second plate frame member and the belt, thereby preventing displacement while maintaining ease of operation.
Solution Approach 2:
The buckle structure allows for dynamic changes in the spatial parameters (position and orientation) of the plate frame members during attachment and removal. The ability of the plate frame members to rotate and adjust their positions enables the system to accommodate the rubbing motion of the hand without compromising the final position stability of the second plate frame member relative to the belt.
2Device complexity
If the second plate frame member is directly attached to the belt, then the structure is simple, but the position adjustment between the second plate frame member and the belt is difficult to maintain accurately
Solution Approach 1:
The buckle incorporates dynamic elements including rotatable plate frame members and adjustable plate parts that can move relative to each other. This dynamic structure enables precise position adjustment of the second plate frame member with respect to the belt during the attachment process, while maintaining a relatively simple overall structure. The adjustable nature allows for accurate positioning without requiring complex pre-adjustment mechanisms.
Data Source
AI summary
A biological information measuring device includes a buckle including a first plate having a plate shape and being fixed to the other end of a second plate frame member and a second plate having a plate shape being rotatable. The second plate has a part that extends beyond the first plate when the second plate overlaps an outer surface of the first plate. A first fixing element is on a side of the extended part that becomes an inner surface when the second plate overlaps the outer surface of the first plate. A second fixing element is engageable with the first fixing element on the outer surface of the front end of the belt. An first engagement protrusion is on the first plate, and a second engagement protrusion overlaps the first engagement protrusion in a direction with the first engagement protrusion is on the second plate.