Sensor Unit Asymmetric Connector Design for Compact Series Connection
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Solution Overview
Problem
Existing sensor units for construction machines, such as hydraulic shovels, face challenges in compactness due to the limited space available for cable connections between sensor units, making it difficult to connect multiple units in series within the arm section, which affects detection accuracy and signal quality.
Innovation Solution
A sensor unit design featuring a container with a base and lid, including two connectors positioned diagonally to minimize width, allowing for compact configuration and easy connection of multiple units in series, with through-holes for secure attachment and a recessed shape for improved mountability and airtightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a connector is provided in only one place in the sensor units, then the device complexity is reduced, but it becomes substantially difficult to make it compact to draw around a cable that connects the sensor units in series within the limited region of the arm section
Solution Approach 1:
The patent applies asymmetry by providing connectors at different positions on opposite sidewalls of the container. Specifically, the first connector is provided on one sidewall at a position closer to one end, while the second connector is provided on the opposite sidewall at a position closer to the other end. This asymmetric arrangement optimizes cable routing within the limited space of the arm section, enabling compact series connection of multiple sensor units without increasing device complexity.
2Measurement precision
If multiple sensor units are connected in series within the limited arm section region, then detection accuracy is improved, but the device becomes difficult to make compact due to cable routing constraints
Solution Approach 1:
The asymmetric connector positioning enables compact series connection of multiple sensor units within the limited arm section region. By placing connectors at optimized positions on opposite sidewalls, the cable can be routed efficiently between units, allowing multiple units to be connected in series for improved detection accuracy while maintaining compact overall dimensions.
Data Source
AI summary
A sensor unit includes a first sidewall, a second sidewall, a third sidewall connected to one end of the first sidewall and one end of the second sidewall, and a fourth sidewall opposed to the third sidewall of a container including a lid, a first connector, and a second connector. The first connector is attached to the first sidewall further on the side of the fourth sidewall than the side of the third sidewall. The second connector is attached to the second sidewall further on the side of the third sidewall than the side of the fourth sidewall.