Handleless Motor Vehicle Door Linear Opening Element
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Solution Overview
Problem
Existing motor vehicle doors with electrically opening locks often have insufficient gaps between the door leaf and the vehicle body for manual opening, especially when rubber seals lose sealing pressure and manufacturing tolerances vary, making it difficult for operators to open the door completely.
Innovation Solution
A handleless motor vehicle side door design featuring a drive-connected opening member that moves linearly against the vehicle body, creating a gap of approximately 50 mm to 100 mm by utilizing a small adjustment path of 10 mm to 20 mm, allowing for easy manual opening, where the opening member is arranged inside the door leaf and moves against a wall perpendicular to the door's axis of rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the door leaf is equipped with an electric door lock that opens automatically, then the locking function is improved, but the gap between the door leaf and vehicle body becomes insufficient for manual opening
Solution Approach 1:
The opening element is actuated in advance by the drive unit after the electric door lock opens, creating a preliminary gap of 50-100 mm that facilitates subsequent manual opening by the operator
Solution Approach 2:
The opening element serves as an intermediary mechanism between the electric lock system and the door leaf, translating the lock's opening action into a controlled gap creation that enables manual operation
2Reliability
If rubber seals are used to create partial opening, then the sealing function is improved, but the gap becomes insufficient when sealing pressure is lost
Solution Approach 1:
The opening element is designed to automatically create and maintain the necessary gap without requiring continuous seal pressure, making the gap creation self-sustaining once activated by the drive unit
3Ease of manufacture
If manufacturing tolerances are standard, then production cost is reduced, but the gap may be inherently too small for manual opening
Solution Approach 1:
The opening element dynamically adjusts the gap parameter from the standard manufacturing tolerance range to a controlled 50-100 mm opening gap, decoupling the final gap size from manufacturing tolerances
4Reliability
If a complex stay mechanism is used to create gap, then the gap reliability is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical stay mechanisms with a simpler drive unit that actuates the opening element, reducing the number of moving parts while maintaining gap reliability through controlled actuation
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 ensures a safe and structurally simple means to open the door leaf relative to the vehicle body, reducing the technological effort and costs while providing a sufficient gap for manual operation, enhancing functional reliability and ease of use.
Implementation Method 1
the opening element connected to the drive is designed as a linear actuator arranged close to an axis of rotation of the door leaf; wherein the opening element moves against the motor vehicle body in the extended position
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
The invention relates to a motor vehicle door, in particular a handless motor vehicle door. Said motor vehicle door is equipped with a door leaf (1), at least one drive (12, 13) and an opening element (14) which is connected to the drive (12, 13), for at least slightly opening the door leaf (1) with respect to a vehicle body (3). According to the invention, the opening element (14) is embodied as a linear control element which is paraxial compared to a rotational axis (2) of the door leaf (1).