Double-Linkage Brake Handle for Time-Delayed Front-Rear Braking
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Solution Overview
Problem
Traditional two-wheeled vehicle brake systems lack the ability to differentiate braking force between rear and front wheels, resulting in poor braking efficiency and safety, as both wheels receive equal braking force regardless of driver input.
Innovation Solution
A double linkage safety brake system with a brake handle, driving arm, and connecting rods, where the distance between the first and second shaft holes differs, allowing the rear wheel brake to engage first with less force and the front wheel brake to engage later with greater force, creating a time difference in braking action.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both front and rear wheel brakes are activated simultaneously with equal force, then the braking system is simple to operate, but the braking efficiency and safety are poor
Solution Approach 1:
The brake linkage is segmented into two independent pathways: the first linkage component (first connecting rod, first support shaft) controls the rear wheel brake, while the second linkage component (second connecting rod, second support shaft) controls the front wheel brake. This segmentation allows each component to operate independently with different timing and force characteristics, resolving the contradiction between simple operation and effective braking by dividing the single braking action into two sequential, differentiated actions.
Solution Approach 2:
The first linkage component is designed to activate the rear wheel brake before the second linkage component activates the front wheel brake. This preliminary action sequence ensures that the rear wheel decelerates first, reducing the vehicle's momentum before the front brake applies its greater stopping force, thereby improving overall braking safety and effectiveness while maintaining a simple single-handle operation.
2Power
If the driver increases braking force, then the braking performance improves, but the rear and front wheels still output the same braking force simultaneously
Solution Approach 1:
The linkage system implements local quality differentiation by designing the first and second linkage components with different geometric parameters. The first connecting rod has a shorter effective lever arm (first distance) while the second connecting rod has a longer effective lever arm (second distance), causing the front brake to receive greater force multiplication than the rear brake when the driver applies force to the handle. This local differentiation in force distribution improves both braking power and safety.
Solution Approach 2:
The system dynamically adjusts the braking force distribution between front and rear wheels based on the driver's input force magnitude. As the driver increases braking force on the handle, the linkage mechanism dynamically transmits this force through the two separate pathways, with the front brake receiving progressively greater force due to its longer lever arm, thereby dynamically optimizing braking performance and safety in proportion to driver input.
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
This system enhances braking performance, safety, and stability by allowing the rear wheel to decelerate first and the front wheel to engage with greater force, improving overall vehicle control and preventing accidents.
Implementation Method 1
a first connecting rod (21) and a second connecting rod (22), a first support shaft (210) is pivoted between the first shaft hole (201) and the first connecting rod (21), and the outer side of the first connecting rod (21) is connected to the rear wheel brake wire (40)
Implementation Method 2
a second support shaft (220) is pivoted between the second shaft slot (202) and the second connecting rod (22), and the outer side of the second connecting rod (22) is connected to the front wheel brake wire (41)
Implementation Method 3
the second shaft hole (202) is an arc-shaped elongated hole, the distance (d1) between the first shaft hole (201) and the shaft (200) is smaller than the distance (d2) between the second shaft hole (202) and the shaft (200)
Data Source
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AI summary
This invention relates to a double linkage safety brake system, which includes at least a brake handle, a base, a rear wheel brake wire, a front wheel brake line, a rear wheel brake and a front wheel brake. Said brake handle is provided with a first connecting rod and a second connection rod, the driving arm of brake handle is provided with a first shaft hole and a second shaft hole, the second shaft hole is an arc-shaped elongated hole, the distance between the first shaft hole and the shaft 200 is smaller than the distance between the second shaft hole and the shaft. A first support shaft is pivoted between the first shaft hole and the first connecting rod, and the outer side of the first connecting rod is connected to said rear wheel brake wire. A second support shaft is pivoted between the second shaft slot and the second connecting rod, and the outer side of the second connecting rod is connected to the front wheel brake wire. In this way, the driver only needs to press the brake once to output a time difference braking force by the first connecting rod and the second connecting rod, and the rear wheel brake and the front wheel brake can generate a time difference braking action; furthermore, the moving arc length of the second connecting rod is greater than the moving arc length of the first connecting rod when the driving arm rotates, so the braking force generated by the second connecting rod is greater than the braking force of the first connecting rod, and the braking force of the front wheel brake is greater than the braking force of the rear wheel brake, to achieve the purpose of safe braking, and can prevent accidents caused by the driver start the front wheel brake first.