Air Brake Lock Assembly Tamper-Proof Knob Mechanism
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Solution Overview
Problem
Air brake actuation knobs on tractor vehicles can be tampered with, compromising the security of parked vehicles, as existing solutions fail to effectively prevent unauthorized activation.
Innovation Solution
A tamper-proof air brake securing device assembly that mounts over the air brake knobs, featuring a lock mechanism with a base and enclosure for each knob, allowing selective locking and unlocking, and optionally spring-loaded for enhanced security, preventing the knobs from being pushed in and thus maintaining the air brake engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If air brake actuation knobs are made accessible for operation, then ease of operation is improved, but security against tampering deteriorates
Solution Approach 1:
The air brake control system is segmented into two functional parts: the air brake knob for operation and the lock mechanism for security. The lock assembly includes separate components (locking plate, cam, shaft) that work independently but coordinate to provide both security and operational access when authorized.
Solution Approach 2:
A lock mechanism serves as an intermediary between the unauthorized environment and the air brake knobs. The locking plate and cam act as mediators that physically block knob operation unless the lock is authorizedly disengaged, thereby preventing tampering while preserving legitimate use.
2Object-affected harmful factors
If a lock mechanism is added to secure air brake knobs, then security against tampering is improved, but device complexity worsens
Solution Approach 1:
The lock mechanism is merged with the existing air brake knob assembly rather than being a completely separate system. The locking plate integrates with the knob structure, and the cam mechanism utilizes the existing shaft and mounting points, thereby adding security functionality while minimizing overall device complexity.
Solution Approach 2:
The lock assembly components serve multiple functions: the locking plate provides both structural support and the locking barrier, the cam provides both the locking action and the release mechanism when rotated, and the shaft serves both as a mounting element and as part of the locking mechanism. This multi-functionality reduces the number of separate parts needed.
3Reliability
If spring-loaded mechanism is used for enhanced security, then reliability is improved, but manufacturing complexity worsens
Solution Approach 1:
The spring provides beforehand cushioning by maintaining constant pressure on the locking plate, ensuring it remains engaged with the knob and dash. This pre-loaded spring mechanism ensures reliable locking without requiring complex active control systems, as the spring automatically compensates for wear and positional variations.
Data Source
AI summary
An air brake lock assembly helps to prevent air brake actuation knobs from being actuated. The air brake lock in accordance with the present invention is a theft-prevention device that mounts over the air brake knobs on the dash of a semi-truck cab. It is installed between the dash and the knobs and, when locked, the assembly prevents the knobs from being pushed in. If the air brake knobs cannot be pushed back in, the air brake will remain locked and the truck and trailer will remain immobile. In one embodiment of the present invention, the assembly includes a base and an enclosure for each brake knob. An air brake lock is disposed between the knobs such that the knobs can be selectively locked and unlocked. In one embodiment, the assembly is spring-loaded. In another embodiment, the assembly is not spring-loaded.