Triple-Sliding Rear Load Carrier for Luggage Compartment Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing load carriers for vehicles with bicycles or luggage often obstruct access to the luggage compartment, especially when vehicles have large movement range lids, such as double rear doors, due to complex kinematics and insufficient displacement of the sliding frame.
Innovation Solution
A load carrier with an intermediate sliding element between the basic frame and sliding frame, allowing a telescopical displacement of the sliding frame relative to the basic frame, extending the movement range to at least 60 cm, and incorporating a locking mechanism to secure the position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sliding frame is moved linearly backwards and tilted backwards relative to the basic frame (two degrees of freedom), then it is possible to open the luggage compartment lid of the vehicle, but the kinematics is complicated and the extended rear position is not sufficiently far away from the retracted front position
Solution Approach 1:
The patent divides the single sliding frame structure into two separate sliding frames that can move independently relative to each other and the basic frame. This segmentation allows each frame to perform simpler linear sliding movements rather than requiring complex combined tilting and sliding kinematics, thereby reducing mechanical complexity while achieving the necessary displacement distance for luggage compartment access.
Solution Approach 2:
The patent introduces an additional spatial dimension by arranging two sliding frames in series rather than requiring a single frame to perform both linear and angular movements. The second sliding frame is positioned to extend the displacement in the longitudinal direction, effectively using dimensional arrangement to achieve greater total displacement without complex kinematic mechanisms.
2Ease of operation
If the sliding frame is moved linearly backwards and tilted backwards relative to the basic frame (two degrees of freedom), then it is possible to open the luggage compartment lid of the vehicle, but the extended rear position is not sufficiently far away from the retracted front position
Solution Approach 1:
The patent segments the displacement function into two independent sliding frames, where the first sliding frame provides initial displacement and the second sliding frame provides additional displacement. This segmentation allows the total displacement distance to be extended beyond what a single sliding frame could achieve, ensuring sufficient clearance for vehicles with large movement range lids such as double rear doors.
Solution Approach 2:
The patent implements a nested arrangement where the second sliding frame is positioned within or alongside the first sliding frame's movement path. This nested configuration allows the second frame to extend the total displacement distance while maintaining a compact overall structure, effectively achieving greater reach without proportionally increasing the device's footprint.
3Length of stationary object
If an intermediate sliding element is arranged between the basic frame and the sliding frame for telescopical displacement, then the displacement distance is extended, but the device complexity increases
Solution Approach 1:
The patent segments the telescopic displacement mechanism into two independent sliding frames that slide relative to each other, rather than using a complex single-stage telescopic mechanism. This segmentation simplifies the intermediate sliding element design while achieving extended displacement distance through the combined movement of both frames.
Solution Approach 2:
The patent employs dynamic sliding mechanisms where the two sliding frames can move independently relative to each other and the basic frame. This dynamic arrangement allows the system to achieve extended displacement distance through coordinated movement of multiple components rather than requiring a complex fixed telescopic structure, thereby reducing overall device complexity.
Data Source
AI summary
The present invention relates to a load carrier, in particular a load carrier for bicycles and/or luggage, for attachment to the rear side of vehicle, with a basic structure having a basic frame and a coupling device for attachment to a vehicle arranged at a front end of the basic frame, and a sliding frame for receiving a load, in particular for receiving bicycles or a luggage box, wherein the sliding frame is translationally moveable relative to the basic frame between a retracted front position and an extended rear position.