Liquid Level Detector Arm Retention Mechanism
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Solution Overview
Problem
Existing liquid level detectors face the risk of the arm coming off its supporting member when exposed to a container, leading to potential contact and dislodgment during installation.
Innovation Solution
A liquid level detector design featuring a supporting member with a holder and cover configuration that prevents exposure of the arm, utilizing a snap fit structure and bending points to securely attach the arm between the holder and cover, ensuring it remains in place and prevents displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the holding portion, hook, and stopper are exposed to outside of the liquid level detector, then the installation process becomes simpler, but the arm may come into contact with the container and come off the supporting member
Solution Approach 1:
The patent applies nesting by placing the holding portion, hook, and stopper inside the container body rather than exposing them externally. The supporting member with these components is nested within the detector assembly, specifically positioned inside the container body, which prevents external contact while maintaining functional integrity. This resolves the contradiction by keeping the arm retention components protected yet operational.
Solution Approach 2:
The patent introduces the container body as an intermediary protective structure between the external environment and the arm retention components. The container body acts as a mediator that prevents direct contact between external objects and the holding portion, hook, and stopper, thereby protecting the arm from dislodgment while allowing the detector to function normally.
2Ease of repair
If the supporting member is exposed to outside, then the arm can be easily accessed for maintenance, but the supporting member may make contact with the container and cause the arm to come off
Solution Approach 1:
The supporting member is nested within the container body, with the holding portion, hook, and stopper positioned inside the container body. This nesting arrangement protects these components from external contact during installation and operation, preventing the harmful effect of container contact while maintaining the structural integrity of the arm support system.
Solution Approach 2:
The patent repositions the supporting member and its components from an external exposure configuration to an internal nested configuration within the container body. This dimensional repositioning moves the components from the external dimension to the internal dimension, eliminating contact with external containers while preserving functional accessibility through the detector's operational interface.
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 design effectively prevents the arm from coming off the supporting member, even when the detector is placed into a container, maintaining accurate liquid level detection and reducing the risk of mechanical failure.
Implementation Method 1
an arm attached to the float and configured to convert a linear motion of the float in an up-and-down direction to a rotary motion
Data Source
AI summary
A liquid level detector may include a float; an arm attached to the float and configured to convert a linear motion of the float in an up-and-down direction to a rotary motion; a sensor configured to detect the rotary motion; and a supporting member supporting the arm to be rotatable relative to the sensor. The supporting member may include: a body fixed to the sensor; a holder rotatably attached to the body; and a cover arranged on an opposite side from the body with the holder intervened in between, and covering the holder from the opposite side. The arm may be supported by the supporting member between the holder and the cover.