Actuator Coupler with Roller Shaft Brake Actuation
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Solution Overview
Problem
Existing coupling devices for towing and towed vehicles are inefficient in managing momentum transfer, leading to premature wear on towing vehicle brakes and loss of control, especially in larger vehicle combinations, and require complex sensor systems that are prone to operational issues.
Innovation Solution
A simplified actuator/coupler device with a coupler ball attachment to the towing vehicle, featuring a telescopic design with roller shafts and a brake actuator that allows limited movement between the coupler and housing, and includes a brake actuator integrated with a shock absorber and safety mechanisms for emergency braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If simple coupling devices are used, then device complexity is reduced, but braking effectiveness and momentum management deteriorate
Solution Approach 1:
The patent combines the coupling function and brake actuation function into a single integrated device. The coupler housing incorporates a brake actuator mechanism that automatically applies trailer brakes when the coupler experiences compressive forces during braking, eliminating the need for separate sensing systems while ensuring reliable braking effectiveness.
Solution Approach 2:
The coupling device performs multiple functions: mechanical coupling between vehicles, shock absorption through telescopic movement, and automatic brake actuation. This multi-functional design replaces complex sensor-based systems with a unified mechanical solution that handles both coupling and braking control.
2Measurement precision
If electrical sensors are used to sense momentum changes, then braking response accuracy is improved, but device complexity and operational reliability worsen
Solution Approach 1:
The patent replaces electrical sensor systems with a purely mechanical actuation mechanism. The brake actuator is directly connected to the coupler through telescopic movement, converting momentum changes into mechanical brake application without requiring electrical sensors, wiring, or electronic control systems.
Solution Approach 2:
The coupling device automatically detects and responds to momentum changes through its own mechanical structure. The telescopic coupler housing and brake actuator work together to sense compressive forces and automatically apply brakes, making the system self-regulating without external sensing or control systems.
3Stability of the object's composition
If telescopic coupler design is used, then momentum transfer control is improved, but device complexity increases
Solution Approach 1:
The coupler housing is designed with telescopic capability, allowing it to dynamically adjust its length in response to forces between the towing and towed vehicles. This dynamic adjustment provides controlled momentum transfer and shock absorption while maintaining a relatively simple structural design based on cylindrical housings and movable components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively relieves strain on towing vehicle brakes, provides controlled braking in emergency situations, and prevents jack-knifing by allowing for smooth momentum transfer and independent braking of the towed vehicle, enhancing safety and control during deceleration.
Implementation Method 1
A pair of opposing rollers secure to the roller shaft and are located inside the generally hollow interior of the coupler whereby the rollers roll on a surface within the generally hollow interior of the coupler
Data Source
AI summary
An actuator/coupler device having a housing connected to a towed vehicle and a coupler attached to a towing vehicle, wherein the coupler is secured to the housing through a pair of opposing roller shafts extending through a slot within the coupler and a hole in the housing. Rollers secured to the roller shafts bear on a surface within the generally hollow interior of the coupler. A brake actuator secures within the coupler, wherein a first end of the brake actuator is secured to the rear roller shaft and a second end is fixed to the coupler, wherein the brake actuator is in operable communication with the brakes of the towed vehicle such that the brake actuator is actuated by movement of the coupler relative to the housing. A coupler ball socket is included within the coupler for releasable attachment of the coupler ball connected to the towing vehicle.