Load Detector With Elastic Body Buffering
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Solution Overview
Problem
Conventional load detectors are difficult to handle due to exposed load sensors, have many parts that complicate size reduction, and are prone to excessive load application damaging the diaphragm or reducing sensor sensitivity.
Innovation Solution
A load detector design featuring a load sensor placed in a case with a projective pressure receiving part and an elastic body on the same side as the upper surface, which absorbs loads and prevents direct contact with the sensor, reducing the number of parts and ensuring stable sensor sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the load sensor is placed in an exposed state, then the load detector can be easily handled, but the load sensor may be damaged or sensor sensitivity may be lowered due to excessive load application
Solution Approach 1:
The patent introduces an elastic body as an intermediary component between the external environment and the load sensor. This elastic body receives external loads and transmits them to the load sensor in a controlled manner, preventing direct contact and excessive loads. The elastic body acts as a buffer that protects the sensor while still allowing accurate load detection.
2Device complexity
If the load sensor is placed in a case with an elastic body on the same side as the upper surface, then the number of parts is reduced and size is minimized, but the structure becomes more complex
Solution Approach 1:
The patent merges the elastic body and load sensor into a single integrated unit housed within one case. The elastic body is positioned on the same side as the upper surface of the load sensor, allowing them to work together as a unified load detection system. This integration reduces the overall number of separate components while maintaining protective functionality.
3Volume of stationary object
If the manipulating body is placed on the elastic body as in conventional designs, then the load can be applied to the diaphragm, but the size and profile of the load detector increase
Solution Approach 1:
The patent changes the spatial arrangement by placing the elastic body on the same side as the upper surface of the load sensor, rather than stacking components vertically as in conventional designs. This dimensional reorganization allows the elastic body and load sensor to work together in a more compact configuration, reducing the overall size and profile of the load detector while maintaining effective load transfer.
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 design enhances handling ease, reduces the size and profile of the load detector, and maintains superior sensor sensitivity by absorbing impacts and preventing excessive loads from being applied to the sensor.
Implementation Method 1
an elastic body placed on the same side as the upper surface of the load sensor, the elastic body being configured to receive a load and press the load sensor in its height direction
Implementation Method 2
since the elastic body directly or indirectly abuts the pressure receiving part on the upper surface of the load sensor, even if a strong impact is applied, the impact is absorbed by the elastic body
Data Source
AI summary
A load detector and an electronic unit using load detectors include a load sensor having a projective pressure receiving part, a case in which the load sensor is placed with the pressure receiving part facing toward the upper surface of the case, and an elastic body placed on the same side as the upper surface of the load sensor, the elastic body configured to receive a load and press the load sensor in its height direction.