Multi-task Trailer Hitch Assembly with Multiple Receiver Tubes
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Solution Overview
Problem
Conventional trailer hitch systems limit the ability to attach multiple accessories while towing, as they require removing the ball mount to accommodate different accessories, and often use lighter-duty materials unsuitable for automotive use, posing safety risks when misused on vehicles like cars or trucks.
Innovation Solution
A multi-task trailer hitch assembly with multiple receiver tubes that can be oriented horizontally, vertically, or at angles, allowing for the attachment of various accessories while maintaining the ability to tow, featuring a heavier-duty ball mount and secure connection, and compatible with both Class II and Class III hitch receivers, along with shank expander strips for secure accessory attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single receiver tube is used in conventional hitch systems, then the structure is simple and easy to manufacture, but the ability to attach multiple accessories while towing is limited
Solution Approach 1:
The hitch system is segmented into multiple receiver tubes (primary and secondary) that can be independently used. The secondary receiver tube is positioned to allow accessory attachment without interfering with the primary towing function, enabling simultaneous use of multiple accessories while maintaining structural manageability
Solution Approach 2:
The hitch assembly is designed with multi-functionality by incorporating both a primary receiver tube for towing and a secondary receiver tube for accessories. Both tubes share common mounting features and can accommodate various accessories, allowing the same structure to serve multiple purposes simultaneously
2Ease of manufacture
If lighter-duty materials are used in hitch assemblies for ATV and lawn and garden tractor use, then the cost is reduced and weight is decreased, but the assembly may be misused on automotive vehicles creating unsafe conditions
Solution Approach 1:
The hitch assembly incorporates receiver tube dimensions and wall thicknesses that provide locally enhanced strength at critical mounting points. The secondary receiver tube and its support structure are designed with sufficient structural integrity to prevent misuse on automotive vehicles, while the overall assembly remains cost-effective for off-road applications
Solution Approach 2:
The design incorporates preliminary protective measures through specific dimensional requirements and structural features that prevent inappropriate use on automotive vehicles. The receiver tube configurations and mounting arrangements are engineered to be incompatible or unsafe for high-stress automotive applications, thereby preventing misuse before it occurs
3Reliability
If accessories are bolted to the rack system, then the attachment is secure, but the installation and removal require tools and are not quick
Solution Approach 1:
The accessory attachment system uses removable pins or quick-release mechanisms that allow dynamic switching between attached and detached states. Accessories can be quickly installed and removed by simply inserting or removing pins, eliminating the need for tools while maintaining secure attachment during use
Data Source
AI summary
The multi-task trailer hitch assembly of the present invention provides receiving tubes for the attachment of one or more trailer hitch-mounted receiver-type accessories while retaining a trailer hitch for pulling a trailer in the single hitch receiver provided on many trucks and ATVs. This permits the simultaneous use of multiple accessories while retaining the concurrent ability to tow. Multiple receiver tubes can be provided, both horizontal and vertical, and oriented not only toward the rear but also at right angles from the ball mount. This permits fastening one or more attachments from not only the rear but also from the top and inward from both sides toward the ball mount. Extra hitch ball mounts and other towing accessories may also be conveniently stored in the receiver tubes of the present invention while towing with a particular Class II or Class III hitch ball mount in the appropriate vehicle-mounted hitch receiver.