Liquid-Surface Detection Device Holder Rigid Turnable Support
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Solution Overview
Problem
Conventional liquid-surface detection devices fail to provide rigid turnable support for the holder in the frame, leading to potential instability and inaccuracies in detecting liquid levels.
Innovation Solution
The device incorporates a bearing part with a protrusion to guide the holder, a first guiding part for rotary movement, and a second guiding part for vertical movement, along with stopper parts and engaging locking mechanisms to securely attach the float arm, ensuring the holder is rigidly turnable within the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holder is engaged with the bearing part by the engagingly locking claw, then the holder can be supported at the frame, but the support is not rigid and causes instability
Solution Approach 1:
The support mechanism is divided into multiple functional components: the bearing part for rotational support, the holding part with upper and lower pieces for positioning, the first guiding part for rotary movement guidance, and the second guiding part for vertical movement guidance. This segmentation allows each component to perform its specific function while collectively providing rigid support.
Solution Approach 2:
The holding part acts as an intermediary between the holder and the frame. It includes upper and lower pieces that engage with both the holder and the frame, respectively, thereby transmitting and stabilizing the connection. The guiding parts serve as intermediaries to control the movement paths of the holder during assembly and operation.
2Ease of manufacture
If the holder is allowed to move freely, then assembly is easier, but the holder cannot be rigidly turnably supported
Solution Approach 1:
The support mechanism provides dynamic guidance during assembly through the guiding parts, allowing the holder to move along predetermined paths (rotary shaft direction and vertical direction). Once assembled, the holder is rigidly constrained by the bearing part and holding part, transitioning from a dynamic assembly process to a static stable configuration.
Solution Approach 2:
The guiding parts are designed to guide the holder during the assembly process, pre-determining the movement paths before final assembly. The first guiding part guides rotary movement and the second guiding part guides vertical movement, ensuring proper positioning is achieved automatically during assembly without requiring complex alignment procedures.
3Measurement precision
If the float arm is securely locked, then detection accuracy is improved, but the operational range may be restricted
Solution Approach 1:
The locking mechanism is applied locally at specific positions along the float arm rather than along the entire length. The first engagingly locking part and second engagingly locking part are positioned at specific locations to secure the float arm at critical positions, allowing the float arm to maintain stability during operation while still permitting movement within the operational range.
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
This configuration provides a stable and precise liquid-surface detection by ensuring the holder is securely and rigidly turnable, enhancing the operational range and accuracy of the float arm, thus effectively addressing the instability issues in conventional designs.
Implementation Method 1
a terminal having an elastic piece comprising a contact point part coming into contact with an electrode part of the circuit board
Implementation Method 2
a float that operates faithfully following a liquid surface
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Provided is a liquid-surface detection device in which a holder is securely and rotatably supported on a frame. A liquid-surface detection device (F) provided with a holder (2) for rotating a circuit board in conjunction with movement of a float which operates so as to follow a liquid surface, a terminal (5) having an elastic piece (5D) provided with a junction (5A) for contacting an electrode part of the circuit board (4), and a frame (1) for housing a portion of the terminal (5), wherein a bearing part (14) is provided for rotatably supporting an end part of a front arm (3) retained by the holder (2) on an external peripheral portion of the frame (1), the holder (2) is provided with a retaining part (2B) having an upper piece (2A) and a lower piece (2B2) between which the bearing part (14) is disposed, and the frame (1) is provided with a first guide part (17) in which the lower piece (2B2) of the retaining part (2B) of the holder (2) can move in the direction of a rotational axis (S) of the holder (2), and a second guide part (18) in which the lower piece (2B2) of the retaining part (2B) can move in the direction perpendicular to the direction of the rotational axis (S) of the holder (2).