Vehicle Towing Structure That Preserves Rear Collision Energy Absorption
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Solution Overview
Problem
Existing towing devices for vehicles are heavy and difficult to mount, lack effective energy absorption during low-speed collisions, and compromise vehicle safety and torsion resistance.
Innovation Solution
A towing device design that includes a U-shaped beam and L-shaped supports connected to the rear floor and anti-collision beam, dispersing forces through the rear floor cross member and energy absorption boxes, maintaining the original anti-collision beam and boxes for improved low-speed collision protection and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cross member is used in the towing device, then the towing device can be mounted on the vehicle, but the weight and size of the towing device increase significantly
Solution Approach 1:
The towing device is divided into separate components: a towing component and a connecting component. The towing component includes a towing body and a connecting component with a connecting body that connects to the vehicle's longitudinal members. This segmentation eliminates the need for a heavy cross member while maintaining structural integrity and mounting capability.
2Reliability
If the original rear anti-collision beam and energy absorption boxes are removed to install the towing device, then the towing device can be mounted, but the low-speed collision protection effect is lost
Solution Approach 1:
The towing device is integrated with the vehicle's existing rear anti-collision beam and energy absorption boxes. The connecting component connects to the longitudinal members, while the towing component works in conjunction with the retained anti-collision beam, merging towing functionality with collision protection functionality.
3Strength
If a hard connection is used between the towing device and the vehicle, then the towing device can be firmly mounted, but collision force is directly transmitted to the vehicle body without energy absorption
Solution Approach 1:
The energy absorption boxes serve as intermediary elements between the connecting component and the vehicle body. These boxes provide a controlled deformation mechanism that absorbs collision energy, preventing direct transmission of impact forces to the vehicle's longitudinal members and body structure.
4Ease of operation
If the towing device structure is simplified to reduce weight, then single-person mounting becomes feasible, but torsion resistance may be compromised
Solution Approach 1:
The towing device is segmented into a towing component and a connecting component that utilizes the vehicle's existing structural elements (longitudinal members, rear anti-collision beam). This segmentation reduces overall weight and complexity for easier handling, while the connection to the vehicle's strong longitudinal members maintains sufficient torsion resistance.
Data Source
AI summary
Disclosed are a towing device for a vehicle and a vehicle. The towing device includes a front end portion and a rear end portion connected to the front end portion, where the front end portion is arranged on a rear floor and a rear floor cross member, so as to disperse an external force borne by the front end portion to the rear floor cross member; and the rear end portion includes a connecting seat and a tow hook connected to the connecting seat and extending out towards an exterior of the vehicle, the connecting seat being arranged on a rear anti-collision beam, so as to transmit an external force borne by the rear end portion to longitudinal members by means of the rear anti-collision beam and energy absorption boxes.