Trailer Hitch Coupler Locking Device with Ratchet Mechanism
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Solution Overview
Problem
Trailers are vulnerable to theft when unattended, as existing locking mechanisms are not sufficient to prevent unauthorized use or theft.
Innovation Solution
A trailer hitch coupler locking device with a lock mechanism that moves a ratchet member from an engaged to a disengaged position, allowing the elongate member to be moved between holding and releasing positions, preventing unauthorized coupling of a towing hitch ball to the trailer socket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking device is added to the trailer hitch coupler, then security against theft is improved, but device complexity increases
Solution Approach 1:
The locking device is nested within the trailer hitch coupler structure itself. The elongate member fits inside the coupler, and the ratchet mechanism is contained within the locking device housing, creating a compact nested arrangement that provides security without requiring a separate external locking system.
Solution Approach 2:
The locking device serves multiple functions: it prevents theft by blocking the hitch ball insertion, allows authorized removal when needed, and provides a secure storage position for the coupler when not in use. The same mechanism handles both security locking and operational release functions.
2Reliability
If the elongate member is held in position by the ratchet mechanism, then security is improved, but ease of operation for authorized users deteriorates
Solution Approach 1:
The ratchet mechanism is pre-configured to engage automatically with the elongate member, providing immediate security upon installation. The spring-loaded ratchet member is positioned to automatically latch when the elongate member is inserted, eliminating the need for separate locking actions while maintaining security.
Solution Approach 2:
The ratchet mechanism transitions from a static locked position to a dynamic unlocked position when force is applied. The spring-loaded ratchet member can be pushed back to disengage from the elongate member's ratchet surface, allowing easy release when needed while maintaining secure engagement during normal operation.
Data Source
AI summary
Provided is a trailer hitch coupler locking device for preventing the unauthorized use or theft of the trailer when stored or otherwise unattended. The locking device includes a lock mechanism configured to move a ratchet member from a first position where the ratchet member is engaged with an elongate member to a second position away from the elongate member where the members are disengaged. The elongate member is movable from a first position where an end of the elongate member is proximate a hitch ball to hold a trailer socket between the end of the elongate member and the hitch ball, and a second position where the end of the elongate member is spaced from the hitch ball to allow the trailer socket to be moved away from the locking device.