Vehicle Cargo Door Stop Arrangement With Locking Handle
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Solution Overview
Problem
Existing door stop arrangements for vehicle loading spaces are not simple or compact enough, lacking efficiency in their operation and design.
Innovation Solution
A door stop arrangement featuring a fixed base part with a pivotally mounted stop lever and an actuating handle, where the handle has a hook that locks onto the base, allowing the lever to pivot and engage with the door bolt, utilizing spring mechanisms for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a door stop arrangement uses a fixed base part with a pivotally mounted stop lever and handle mechanism, then the door can be securely stopped in the open position, but the arrangement becomes too complex and bulky
Solution Approach 1:
The patent combines the stop lever and handle into a single integrated pivoting assembly that rotates together around a common axis. This merging of components reduces the number of separate parts and simplifies the overall structure while maintaining the door stopping function. The stop lever and handle are connected such that they move as one unit, eliminating the need for separate mounting mechanisms.
Solution Approach 2:
The pivoting assembly serves multiple functions: the stop lever engages with the door bolt to hold the door open, while the handle provides the actuating force to pivot the lever into position. The spring mechanism simultaneously provides both the restoring force to return the assembly to its neutral position and the locking force to maintain engagement. This multi-functionality reduces the need for separate components for each function.
2Reliability
If the stop lever is mounted to pivot between rest and door stop positions, then the door can be effectively stopped, but the arrangement occupies excessive space
Solution Approach 1:
The handle is positioned within or adjacent to the stop lever structure, with both components sharing the same pivoting space. The spring mechanism is integrated into the assembly, with its mounting points located on existing structural elements of the stop lever and handle. This nesting of components within each other's spatial envelope minimizes the overall volume occupied by the arrangement.
Solution Approach 2:
The stop lever and handle pivot in an arc that utilizes the available three-dimensional space efficiently. The pivoting motion transforms linear space requirements into rotational space utilization, allowing the components to occupy a compact cylindrical volume rather than requiring extended linear space. The arrangement leverages the vertical and lateral dimensions of the door frame to accommodate the pivoting motion.
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 provides a simpler, more compact, and efficient mechanism for stopping and opening vehicle doors, ensuring secure engagement and easy release with minimal effort.
Implementation Method 1
counter to spring means reminder 18
Implementation Method 2
two compression springs 18a, 18b
Implementation Method 3
return spring 26
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a door stop arrangement (4) for opening and closing a space such as the cargo area of a vehicle, particularly in its open position, of the type comprising a fixed base (10) mounted on the support structure of the door (4), a stop lever (14) pivotally mounted on the fixed base (10) between a rest position and a stop position of the door (4) in its open position, an actuating handle (16) for pivoting the lever (14), and means (18) for returning the lever (14) to this rest and stop position, characterized in that it comprises locking means (20, 22) of the handle (16) on the fixed base (10) when the stop lever (14) is in its door stop position. The invention is applicable to transport vehicles.