Stop Buffer Anti-Rotation Device for Vehicle Parts
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Solution Overview
Problem
Existing stop buffers for vehicle parts are complex and prone to wear, leading to inefficiencies and noise during vehicle operation.
Innovation Solution
A simple and robust stop buffer device comprising an elastic stop buffer with a buffer shaft and buffer head, secured against rotation using a securing element that engages with the receiving body through a thread and helical ramp section, enhancing stability and service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a stop buffer is used to support a vehicle part in a closed position, then the position stability is improved and noise is reduced, but the device complexity increases and wear resistance decreases
Solution Approach 1:
The stop buffer device is divided into distinct functional segments: the buffer element for position support, the securing element for anti-rotation, and the receiving body for mounting. This segmentation allows each component to be optimized independently, reducing overall complexity while maintaining stability.
Solution Approach 2:
The stop buffer device integrates multiple functions into a single compact assembly: it provides position support, prevents rotation, and absorbs impact forces. The buffer element serves both as a positioning mechanism and a shock absorber, reducing the need for additional components.
2Object-generated harmful factors
If a stop buffer is used to support a vehicle part under preload, then noise is reduced, but the device complexity increases and service life decreases
Solution Approach 1:
The buffer element is pre-loaded into the receiving body before final assembly, creating a cushioning effect that absorbs impact forces and prevents rattling noises. This pre-cushioning protects the buffer element from excessive wear during operation, extending service life.
Solution Approach 2:
The buffer element is designed as a simple, replaceable component that can be easily replaced when worn. This allows the main structural components (receiving body, securing element) to remain in service for extended periods, improving overall service life while keeping noise reduction effective.
3Reliability
If a securing element is added to prevent rotation of the stop buffer, then reliability is improved, but device complexity increases
Solution Approach 1:
The securing element features an asymmetric design with a projection on one side that engages with a corresponding recess in the receiving body. This asymmetric geometry prevents rotation in one direction while maintaining simplicity, improving reliability without adding complex mechanisms.
Solution Approach 2:
The securing element acts as an intermediary component between the buffer element and the receiving body, providing the anti-rotation function. This mediator approach allows the main components to remain simple while achieving the desired reliability through the intermediate securing mechanism.
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 device provides stable support and reduces noise by preventing rotation, thus extending the service life and improving the operational efficiency of vehicle parts.
Implementation Method 1
The securing element engages at least partially in the thread of the buffer shaft and is supported on the receiving body... This preferably prevents rotation (e.g., clockwise rotation) of the stop buffer relative to the receiving body
Implementation Method 2
The buffer shaft has a thread (e.g., a screw thread)... The securing element further engages at least partially in the thread of the buffer shaft
Implementation Method 3
A first independent aspect of the present disclosure relates to a device for supporting a (e.g. pivotable) first vehicle part (such as a vehicle door) on a (e.g. fixed) second vehicle part (such as a driver's cab)... The stop buffer can, for example, be made of plastic or rubber... (e.g., only one (e.g., elastic) stop buffer)
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3G
AI summary
The invention relates to a device (10) for supporting a first vehicle part (20) against a second vehicle part. The device (10) has a stop buffer (11) with a buffer shaft (12) and a buffer head (14) connected to the buffer shaft (12), wherein the buffer shaft (12) has a thread (13) and the buffer head (14) has a stop surface (15) for the second vehicle part. The device (10) further comprises a receiving body (16) which is arranged or can be arranged on the first vehicle part (20) and which has an opening (17) into which the buffer shaft (12) is screwed. Furthermore, the device (10) has a locking element (18) for preventing the stop buffer (11) from rotating, wherein the locking element (18) is arranged between the buffer head (14) and the receiving body (16), engages at least partially in the thread (13) of the buffer shaft (12) and is supported on the receiving body (16).