Height-Adjustable Stanchion with Selective Pivot Joint
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Solution Overview
Problem
Existing height-adjustable stanchions for tarpaulin structures on commercial vehicles face challenges in maintaining longevity and structural integrity due to high loads and vibrations when the roof is raised, as existing solutions with joints or guides prone to play compromise both functionality and durability.
Innovation Solution
The stanchion design features a swivel joint that is selectively released or blocked based on the stanchion head's position, allowing for one-sided roof lifting without compromising structural integrity, achieved through a C-profile stanchion head receptacle and an adjusting rod for precise height adjustment, ensuring the stanchion head is securely positioned in both pushed-in and extended positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the stanchion head is made height-adjustable with a pivot joint to enable roof lifting, then the ease of operation is improved, but the reliability deteriorates due to higher loads and vibrations during vehicle travel
Solution Approach 1:
The stanchion head is designed with a pivot joint that can be selectively released or blocked based on operational needs. During loading/unloading, the pivot joint is released to allow roof tilting. During vehicle travel, the pivot joint is blocked to prevent movement and withstand vibrations and loads, thus resolving the contradiction between operational flexibility and structural reliability
Solution Approach 2:
The stanchion head's positional parameter is changed by extending it partially from the stanchion head receptacle. This partial extension creates the necessary clearance for the pivot joint to function during roof lifting, while still maintaining sufficient connection for stability during normal driving, thereby balancing ease of operation with reliability
2Adaptability or versatility
If the stanchion head is extended from the receptacle to release the pivot joint, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The height adjustment function and pivot joint release function are merged into a single action. By extending the stanchion head from the receptacle, both the height is adjusted and the pivot joint is simultaneously released. This eliminates the need for separate mechanisms for each function, reducing overall device complexity while maintaining adaptability
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
Described and illustrated is a stake (9), in particular a corner stake, for a tarpaulin superstructure (1) of a commercial vehicle (N), in particular a truck, trailer or semi-trailer, with a roof (3) that is height-adjustable on at least one side, comprising a stake head (12) for at least partially supporting a roof (3) and a stake head receptacle (14) for at least partially receiving the stake head (12) in a position inserted into the stake head receptacle (14) and in a position extended from the stake head receptacle (14), wherein the stake head (12) and the stake head receptacle (14) are connected by a pivot joint (20) for pivoting the stake head (12) relative to the stake head receptacle (14).In order to enable the roof of the tarpaulin superstructure to be easily lifted on one side from different driving positions and thus roof heights without significantly impairing the durability and design of the stake, it is provided that the stake head (12) in the extended position is extended from the stake head receptacle (14) in such a way that the at least partial pivoting of the stake head (12) about the pivot joint (20) from a starting position to a pivoted position is allowed, and that the stake head (12) in the retracted position is received in the stake head receptacle (14) in such a way that the pivoting of the stake head (12) from the starting position about the pivot joint (20) is at least substantially blocked.