Sensor Protector V-Shaped Cross Section Detection Range
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Solution Overview
Problem
Existing protectors with sensors have a limited movable range for detecting objects, such as fingers, due to the oblong-shaped space between conductive parts, which restricts detection to a narrow angle, making it difficult to detect objects beyond 60°.
Innovation Solution
The design features a hollow part with a V-shaped cross section, where the conductive parts have a convex and concave shape, allowing for a wider movable range and improved detection capabilities, with the space between them having a uniform width and both ends of the V-shaped cross section continuously provided on the inner surface of the outer coat, enhancing the sensor's ability to detect objects over a broader range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the space between conductive parts has an oblong-shaped cross section, then the structure is simple to manufacture, but the movable range for detecting objects is limited to a narrow angle
Solution Approach 1:
The patent transitions from a two-dimensional oblong-shaped cross section to a three-dimensional V-shaped cross section with uniform width. This dimensional change allows the conductive parts to bend over a wider angular range (up to 120 degrees) while maintaining manufacturability through standard molding processes.
Solution Approach 2:
The patent changes the geometric parameters of the space between conductive parts from an oblong shape to a V-shaped cross section with uniform width. This parameter change enables the conductive parts to achieve greater flexibility and bending capability, expanding the detection angle range without compromising structural integrity.
2Adaptability or versatility
If the conductive parts are positioned to provide wide detection range, then object detection capability is improved, but the sensor size increases
Solution Approach 1:
The patent employs curved surfaces and rounded edges in the V-shaped cross section design, allowing the conductive parts to bend more effectively within a compact volume. The curved geometry enables greater angular movement (120 degrees) without requiring a larger sensor housing, thus maintaining a compact size while expanding detection range.
3Measurement precision
If the space between conductive parts has uniform width with V-shaped cross section, then detection capability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent combines the V-shaped cross section with uniform width into a single integrated mold cavity design. This merging of features allows both the angular detection capability and uniform spacing to be achieved simultaneously through standard injection molding processes, avoiding the need for complex multi-step manufacturing that would require极高 precision.
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 enables detection of objects over a wider range of 120° on both the inner-cabin and outer-cabin sides, improving the sensor's capability and preventing cracks from convex substances, while also simplifying production and miniaturizing the sensor.
Implementation Method 1
a sensor (pressure sensitive sensor) 80 which outputs a corresponding electric signal upon detecting the object
Data Source
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AI summary
A protector with a sensor is installed on a sliding door (1) for detecting an alien substance by touch between two conductive parts (54, 55) in a hollow part (52) with a space (53) therebetween. An outer peripheral surface of the hollow part is an outer coat (52a) substantially having a horseshoe shaped cross section. Both ends (52b, 52c) of the outer coat are connected with an installation base member (11). The two conductive parts (54, 55) comprising a conductive part (55) having a convex shape on a lower part of the hollow part and a conductive part (54) having a concave shape on an upper part of the hollow part are shaped and positioned in a manner that the space (53) substantially has a V-shaped cross section and a uniform width in cross section, an opening of the V-shaped cross section faces a side of said installation base member, and both ends (53a, 54b) of the V-shaped cross section are continuously provided on an inner surface of the outer coat (52a).