Car Door Handle Sensor Assembly for Single-Motion Access
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Solution Overview
Problem
Existing car door access systems with electronic sensing units can decrease user experience quality due to non-intuitive placement of the sensing unit and require practice to operate, as they often necessitate separate movements for unlocking and opening the door.
Innovation Solution
A car access assembly with an electronic sensing unit integrated into the handle, featuring a sensor attached to the external side of the car door and a fixing mechanism that transmits constraint applied to the handle for detection of user commands, allowing for intuitive operation with a single movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an electronic sensing unit is added to detect user commands, then the automation of door unlocking is improved, but the ease of operation deteriorates due to non-intuitive placement requiring separate movements
Solution Approach 1:
The patent merges the electronic sensing unit with the mechanical handle structure by integrating the sensor into the handle assembly. The sensor is positioned to detect constraints applied directly to the handle, combining electronic detection capabilities with the familiar mechanical interface. This integration allows the sensing unit to be located in an intuitive position (on the handle itself) while maintaining automated unlocking functionality, resolving the contradiction between automation and ease of operation.
2Ease of operation
If the sensing unit is located on the handle for intuitive operation, then the ease of operation is improved, but the device complexity increases due to integration requirements
Solution Approach 1:
The handle assembly is designed to serve multiple functions: it maintains its traditional mechanical function for door opening while simultaneously housing the electronic sensing unit that detects user commands. The handle structure acts as both a mechanical interface and a mounting platform for the sensor, eliminating the need for separate mounting mechanisms and reducing overall system complexity despite the added electronic functionality.
3Reliability
If a fixing mechanism with multiple elements is used to attach the sensor, then the reliability of sensor attachment is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The fixing mechanism is divided into multiple independent elements: a first element that attaches the sensor to the handle and a second element that secures the assembly to the door. This segmentation allows each fixing element to be optimized for its specific function and installed independently, reducing the cumulative precision requirements compared to a single complex mounting system while maintaining overall attachment reliability.
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 integrated electronic sensing unit facilitates intuitive and efficient operation of the car door, enabling users to unlock and open or close and lock the door with a single movement, enhancing user experience and reducing the need for practice.
Implementation Method 1
the sensor includes at least one strain gauge, said at least one strain gauge being configured to be deformed when the constraint is applied to the handle
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
Electronic sensing unit (1) for a handle (3) attached on a car door, the electronic sensing unit (1) comprises: a sensor (7) attached on an external side of a part of the car door extending according to a reference plane; a fixing mechanism (15) for the sensor (7), the fixing mechanism (15) comprising a first element (17) and a second element (19) configured to cooperate together; the first element (17) being also configured to cooperate with the part of the car door and the sensor (7) or with the handle (3); the second element (19) being also configured to cooperate with the handle (3) or with the part (11) of the car door (5) and the sensor (7) so that a constraint applied to the handle (3) is transmitted to the sensor (7) for detection of a command.