Adjustable Vehicle Door Stopper with Threaded Rotation and Expansion Fastening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automotive deck lid bumpers face issues with dismountability, sealing properties, unwanted rotation, and haptic feedback during adjustment.
Innovation Solution
An adjustable stopper device with a central opening for tool engagement, featuring an inner thread on the base part and an outer thread on the adjustment part, along with a sealing element made of plastic and a fastening structure using expansion and/or hook elements that can be easily mounted and dismounted, preventing unwanted rotation and providing secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fastening structures are used, then secure fixation is achieved, but dismountability is reduced
Solution Approach 1:
The fastening structure is divided into multiple independent expansion elements (e.g., 4 elements) that can individually engage with corresponding openings in the car body. Each element can be independently actuated between fastening and release positions, allowing the base part to be securely fastened when engaged but easily dismounted by actuating the release mechanism.
2Adaptability or versatility
If threaded connection is used for adjustment, then adjustability is achieved, but resistance to unwanted rotation is reduced
Solution Approach 1:
The adjustment part features a composite structure combining a threaded section (for adjustability) with a knurled section (for enhanced grip). The knurled surface provides increased friction and tactile feedback, preventing unwanted rotation while maintaining the ability to adjust the abutment surface position by turning the adjustment part.
3Reliability
If separate sealing element is used, then sealing properties are improved, but device complexity increases
Solution Approach 1:
The sealing element is integrated with the base part as a single unit, eliminating the need for separate assembly steps. The sealing element is formed as part of the base part structure, providing sealing properties around the fastening structure openings while reducing the total number of components and simplifying the device.
4Reliability
If softer stopper part material is used, then sealing properties are improved, but structural strength is reduced
Solution Approach 1:
The stopper part is made of softer material specifically at the regions that contact the vehicle door and the adjustment part, while maintaining adequate structural strength for its function. The softer local regions provide improved sealing and contact properties, while the overall part geometry and material selection ensure sufficient strength to withstand operational loads.
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 solution enhances dismountability, maintains sealing integrity, prevents unwanted rotation, and ensures secure fastening while being easy to install and remove, thus addressing the limitations of existing technologies.
Implementation Method 1
The fastening structure comprises one or more, preferably two, particularly preferably four, expansion and/or hook elements
Implementation Method 2
a fastening structure for fastening the base part to the car body
Implementation Method 3
The thread of the base part is an inner thread and the thread of the adjustment part is an outer thread
Implementation Method 4
a sealing element for sealing against the car body which is surrounding the fastening structure
Data Source
AI summary
An adjustable stopper device (1) for a vehicle door or hood, includes a base part (100), and adjustment part (200), a stopper part (300) and a fastening structure (400). The adjustment part is connected to the base part via threads (120, 220) and thereby rotatable around a device axis (210) with respect to the base part (100). The stopper part is configured to contact the vehicle door and to provide an abutment surface (310) for the vehicle door when the vehicle door is closed, wherein the stopper part is connected to the adjustment part and wherein the axial position of the abutment surface is adjustable by turning the adjustment part with respect to the base part around the device axis. The fastening structure fastens the base part to the car body (2). A vehicle with, use of and method for manufacturing such a device are also described.