Nut Leadscrew Automatic Door Mechanism for Compact Space
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Solution Overview
Problem
Conventional automobile automatic door opening and closing mechanisms have low efficiency and require a large space, limiting intelligent upgrades and modifications.
Innovation Solution
A nut leadscrew type automatic door opening and closing mechanism, comprising a driving device, gearbox, nut gear, and leadscrew, where the driving device is fixed to the door, the gearbox is hinged to the door, and the nut gear is disposed in the gearbox, allowing the nut gear to reciprocally move along the leadscrew to generate axial force for door operation, with a gearbox hinge allowing for angle compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If four link mechanisms are used for automatic door opening and closing, then the door can be automated, but the mechanism occupies large space and has low efficiency
Solution Approach 1:
The patent replaces the traditional four-link mechanical mechanism with a leadscrew-nut mechanical substitution system. The leadscrew converts rotational motion from the motor into linear motion of the pushing arm, achieving door automation with a more compact structure that occupies less space while maintaining high transmission efficiency
Solution Approach 2:
The invention introduces a hinge connection between the gearbox and door, allowing the gearbox to swing relative to the door. This adds a dimensional degree of freedom that enables the mechanism to accommodate angle differences between the leadscrew and door rotation center, reducing spatial constraints and occupying less overall space
2Extent of automation
If four link mechanisms are used for automatic door opening and closing, then the door can be automated, but the mechanism has low transmission efficiency
Solution Approach 1:
The patent replaces the four-link mechanism with a leadscrew-nut transmission system that has inherently higher transmission efficiency. The leadscrew converts rotational motion to linear motion with minimal energy loss, and the direct connection between the pushing arm and door eliminates the energy losses associated with multiple linkages and joints in the four-link mechanism
3Extent of automation
If four link mechanisms are used for automatic door opening and closing, then the door can be automated, but high requirements for door installation are needed
Solution Approach 1:
The invention makes the gearbox hinge-connected to the door, allowing it to swing and automatically compensate for angle differences during door operation. This dynamic adjustment capability eliminates the need for precise installation requirements, as the mechanism can adapt to varying angles between the leadscrew and door rotation center throughout the door's opening and closing cycle
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 mechanism achieves high transmission efficiency, reduces space requirements, and allows for smaller and lighter door operation systems, enabling versatile and efficient automatic door opening and closing with minimal structural modifications.
Implementation Method 1
The nut gear is sleeved on the leadscrew, and the driving device is configured to drive the nut gear to rotate, so that the nut gear is reciprocally linearly movable along the leadscrew to push the door to open or close relative to the main body
Data Source
AI summary
A nut leadscrew type automatic door opening and closing mechanism, an automobile automatic door, and an automobile. The nut leadscrew type automatic door opening and closing mechanism includes a driving device, a gearbox, a nut gear, and a leadscrew. The driving device is fixedly connected to a door, the gearbox is hinged to the door, and the nut gear is disposed in the gearbox. One end of the leadscrew is hinged to a vehicle body, and the other end extends in an axial direction. The nut gear is sleeved on the leadscrew, and the driving device is configured to drive the nut gear to rotate, so that the nut gear is reciprocally linearly movable along the leadscrew to push the door to open or close relative to the vehicle body.