Sphygmomanometer Lead Wire Stabilization via Casing Ribs
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Solution Overview
Problem
Sphygmomanometers with vibration elements experience noise due to the flexible lead wires vibrating and causing contact between adjacent members, which is not effectively addressed by existing technologies.
Innovation Solution
A sphygmomanometer design featuring a casing with ribs that securely fix the lead wires between the side wall and the ribs, reducing noise by stabilizing the lead wires and preventing vibrations from causing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lead wire is made flexible to allow movement, then the ease of operation is improved, but the noise generated by vibration increases
Solution Approach 1:
The patent introduces ribs as an intermediary structure between the lead wire and the casing. These ribs act as a mediator that provides both mechanical support and vibration damping, allowing the lead wire to maintain flexibility while preventing excessive vibration that causes noise. The ribs create a controlled environment for the lead wire without restricting its necessary movement.
2Object-generated harmful factors
If the lead wire is fixed securely to prevent vibration, then the noise is reduced, but the flexibility and ease of operation deteriorates
Solution Approach 1:
The patent applies local quality by providing support only at specific locations where ribs are positioned, rather than fixing the entire lead wire rigidly. This allows the lead wire to remain flexible in unsupported sections while being stabilized at critical points where vibration would cause noise. The support structure provides localized constraint without global rigidity.
3Volume of moving object
If the casing size is reduced for compactness, then the portability is improved, but the space for lead wire management deteriorates
Solution Approach 1:
The patent implements nesting by integrating the lead wire support structure directly into the casing walls through the ribs. The ribs are formed as integral parts of the casing, eliminating the need for separate support components. This nested integration allows effective lead wire management within the compact casing volume without increasing overall device size.
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 effectively reduces noise caused by lead wire vibrations, maintaining a compact size for the sphygmomanometer while ensuring the lead wires are securely fixed, thereby enhancing the device's operational quietness and structural integrity.
Implementation Method 1
a piezoelectric pump located in the casing and including a nozzle of which gas is jetted out
Data Source
AI summary
A sphygmomanometer includes a casing including a base and a side wall surrounding the base, a circuit board provided in the casing, a piezoelectric pump located in the casing and including a nozzle of which gas is jetted out, a first lead wire and a second lead wire each having one end electrically connected to the piezoelectric pump and an other end electrically connected to the circuit board, and a first rib and a second rib each projecting from the base toward the inside of the casing. A direction in which the first rib and second rib project is substantially parallel to a direction in which the nozzle extends. The first lead wire is press-fitted between the side wall and the first rib, and the second lead wire is press-fitted between the first rib and the second rib.