Push-Bar Bracket Assembly with Pivot Pins and Clevis Brackets
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Solution Overview
Problem
Existing attachment mechanisms for vehicle push bars are inadequate in accommodating push bars of different designs and materials, as they fail to provide a universal and efficient method for securing various types of push bars to vehicles.
Innovation Solution
A push-bar assembly featuring upper and lower brackets with pivot pins and clevis brackets, along with optional springs and solenoids, allows for secure attachment and detachment of push bars to vehicle rails and bumpers, enabling versatility across different vehicle types and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a universal attachment mechanism is designed to accommodate different push bar designs and materials, then adaptability is improved, but device complexity increases
Solution Approach 1:
The attachment mechanism uses standardized vehicle rails and bumpers as mounting points that can accommodate various push bar designs, materials, and configurations. The bracket system with pivot pins and clevis brackets provides a universal interface that works with different push bar types without requiring custom mounting solutions for each variant.
Solution Approach 2:
The attachment mechanism is divided into separate functional components: upper brackets attached to vehicle rails, lower brackets attached to bumpers, pivot pins for rotation, and clevis brackets with pins for securing. This segmentation allows each component to be optimized independently while maintaining overall adaptability.
2Reliability
If a secure attachment mechanism is implemented, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The mechanism incorporates movable pins that can be shifted between locked and unlocked positions. The pins are designed to be easily manipulated by hand or simple tools, allowing quick installation and removal while maintaining secure attachment when engaged. The dynamic nature of the pin system enables rapid state changes between secured and unsecured conditions.
3Ease of operation
If manual pin shifting is used, then ease of operation is improved, but productivity deteriorates
Solution Approach 1:
The manual pin-shifting mechanism is replaced with solenoid actuators that automatically move the pins between locked and unlocked positions. This automation significantly increases installation and removal speed while maintaining the same secure attachment functionality, making the system suitable for high-productivity applications.
4Reliability
If springs are used to bias pins to locked position, then reliability is improved, but device complexity increases
Solution Approach 1:
Springs are incorporated into the pin mechanism to automatically bias the pins toward the locked position, ensuring secure attachment without requiring additional actuators or complex control systems. The springs provide continuous force to maintain the locked state, and the system self-regulates without external intervention during normal operation.
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 solution provides a secure, adaptable, and efficient method for attaching push bars to vehicles, accommodating various designs and materials, ensuring reliable installation and removal while accommodating different vehicle types.
Implementation Method 1
A pair of springs with each spring being attached between one of the pins and one of the lower brackets to bias the pin to a locked position
Implementation Method 2
a pair of solenoids each operatively connected to one of the pins and one of the lower brackets for shifting the pin between a locked position and an unlocked position
Data Source
AI summary
A push-bar assembly including a push-bar and a pair of push-bar supports. The push-bar supports are attached by a pair of upper brackets and a pair of lower brackets. The lower brackets include about which a mounting block attached to the push-bar supports pivot when the push-bar assembly is assembled to a vehicle. A clevis bracket and clevis pin are provided on lower bracket assemblies that secure a lower mounting block on the push-bar supports to a pair of lower bracket assemblies.