Trailer Hitch Jack Cover with Composite Cushioning and Pin Lock
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Solution Overview
Problem
Existing hitch jack covers are prone to damage from environmental exposure, lack secure fastening, and do not provide adequate security or aesthetic appeal, while also failing to prevent damage to tailgates and hitch jacks from impact.
Innovation Solution
A trailer hitch jack cover made of metal or rigid materials with a cushioned surface and a secure fastening mechanism, including a pin and locking device, that encloses the adjustment mechanism and prevents unauthorized use, while also distributing impact forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If soft cushioning materials are used for the cover, then impact protection is improved, but durability against environmental damage deteriorates
Solution Approach 1:
The cover combines a rigid outer shell made of durable materials (metal, plastic, or composite) with an inner cushioning layer made of soft material (foam, rubber, or elastomer). This composite structure provides both impact absorption from the soft inner layer and environmental durability from the rigid outer shell, resolving the contradiction between impact protection and durability.
2Ease of operation
If simple fastening methods are used, then ease of installation is improved, but security against unauthorized removal deteriorates
Solution Approach 1:
The fastening system is divided into multiple components: a pin that passes through aligned openings in the cover and hitch jack, and a separate locking mechanism (cotter pin, clip, or hasp with padlock). This segmentation allows for easy installation by simply inserting the pin through pre-aligned openings, while providing enhanced security through the additional locking component that prevents unauthorized removal.
3Reliability
If the cover encloses the adjustment mechanism, then security and aesthetics are improved, but accessibility for operation deteriorates
Solution Approach 1:
The adjustment mechanism (crank handle or wheel) is extracted from full enclosure by providing specific openings or access points in the cover. These openings are positioned and sized to allow insertion of tools or hands for operating the adjustment mechanism while maintaining overall enclosure for security and aesthetic purposes. The openings provide selective accessibility without compromising the protective enclosure.
4Strength
If rigid materials are used for the cover, then structural strength is improved, but cushioning capability deteriorates
Solution Approach 1:
The cover employs a composite structure with a rigid outer shell made of strong materials (metal, hard plastic, or composite) that provides structural strength and environmental protection, combined with an inner cushioning layer made of soft material (foam, rubber, or elastomer) that provides impact absorption. This composite approach allows both rigid strength and soft cushioning to coexist in the same cover structure.
Data Source
AI summary
A trailer hitch jack cover includes a housing with a lower open end and configured to be securely disposed over a trailer hitch jack to enclose an operative upper portion of a hitch jack including an adjustment mechanism, a cushion member secured to the housing and covering to an upper surface of the housing, and a fastening mechanism which secures the housing to the hitch jack. The housing is formed of rigid material and includes a side wall which defines an open space therein and an upper member which is fixed to and closes an upper end of the side wall. The cushion member covers an upper surface of the housing upper member.