Luggage Handle Holder with Isolated Weighing Sensor
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Solution Overview
Problem
Existing luggage with integrated weighing sensors face inaccuracies and structural issues due to the use of hard materials, leading to twisting and deformation under load, which affects measurement consistency and assembly efficiency, particularly when handles and sensors are made of non-deformable materials.
Innovation Solution
A case holder design featuring a grip with a built-in fixing base for the weighing sensor, utilizing a rigid lifting bushing with a gap between the inner wall and the grip to maintain contactless separation of the loading and fixed ends, ensuring accurate weighing, and incorporating a guiding path and connecting wire for signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the weighing sensor is coupled with the outer surface of the luggage, then the weighing function is achieved, but the outer surface would be twisted or slanted under overload causing inaccurate measurement
Solution Approach 1:
The invention separates the weighing sensor system from the luggage outer surface by introducing an independent holder structure. The holder contains the weighing sensor and is fixed to the luggage body, while the grip passes through the holder without direct contact with the sensor. This segmentation isolates the sensor from structural deformations of the outer surface, maintaining measurement accuracy under various loading conditions.
2Strength
If the handle and weighing sensor are made of hard material, then the shockproof and anti-twisting abilities are improved, but the structure would be distorted after loading tests causing deviation of the weight sensor
Solution Approach 1:
The weighing sensor is extracted from the handle structure and placed within a separate holder that is fixed to the luggage body. The grip passes through the holder but does not directly contact the sensor. This extraction ensures that even if the handle undergoes deformation during loading tests, the sensor remains isolated in a stable position, preventing measurement deviation while maintaining the strength benefits of hard materials in the handle.
3Ease of operation
If the palm touches the loading end and thumb contacts the retention end of the weighing sensor, then the user can grip the handle, but it would cause an inaccurate weighing operation
Solution Approach 1:
The holder acts as an intermediary structure between the grip and the weighing sensor. The grip passes through the holder, allowing user contact with the outer surface of the holder, while the weighing sensor is contained within the holder and remains contactless. This intermediary structure enables comfortable gripping while preventing direct contact with the sensor, ensuring accurate weighing operations.
4Ease of operation
If the displaying device is mounted on the top side of the outer casing of the handle arrangement, then the display is accessible, but when the luggage is overloaded the base moves vertically pushing the displaying device to be twisted and detach
Solution Approach 1:
The displaying device is extracted from the handle arrangement and mounted on the luggage body or case surface instead. This separation ensures that the displaying device is not affected by vertical movements or twisting of the handle base during overload conditions. The display remains securely positioned and accessible to users while maintaining reliability under various loading conditions.
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 provides accurate and stable weighing measurements, reduces assembly complexity, and allows for the use of both soft and hard materials, enhancing the durability and aesthetic appeal of luggage handles.
Implementation Method 1
a weighing sensor (7) connected between the fixing base (6) and the lifting arrangement (2)
Data Source
AI summary
A case holder with weighing sensor that weighs accurately, has a fixing base of a weighing sensor built in the holder, and ensures the fixed end and the loading end of the weighing sensor meet weighing principle. It includes a grip and a lifting arrangement arranged at two ends of the lower surface of the grip and allowed to pass through a case surface to be fixedly connected with a stressed plate below the case surface. A neutral zone of the grip provides a fixing base for arranging a weighing sensor. A fixed end of the weighing sensor is fixedly connected on the fixing base with screw. A loading end of the weighing sensor includes a rigid and structurally closed lifting bushing fixedly connected thereon. The lifting bushing is arranged around the grip, the fixing base, and the weighing sensor and has two ends separately arranged to the corresponding lifting arrangement. The inner wall of the lifting bushing and the grip have a gap therebetween. Contrasting to the prior art, the present invention allows the relationship of the loading end and the fixed end of the weighing sensor to stick to the weighing principle. Therefore, cases that use the holder of the present invention can weight very accurately.