Pedal Spring Guide Structure to Prevent Seat Tilting
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Solution Overview
Problem
In pedal simulators, the movement of spring seats in a direction perpendicular to the direction of spring deformation is not restricted, leading to potential inhibition of spring deformation due to tilting or shifting, which affects the pedaling operation.
Innovation Solution
A pedal device is designed with a pedal that rotates about a rotation axis, featuring first and second elastic members that generate reaction forces. The device includes holders with guides that restrict movement perpendicular to the deformation direction, preventing inhibition of elastic member deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If spring seats are allowed to move freely in directions perpendicular to spring deformation, then the device structure is simpler and easier to manufacture, but the spring deformation may be inhibited due to tilting or shifting
Solution Approach 1:
Guides are introduced as intermediary components between the spring seats and the cylinder wall. These guides constrain the spring seats to move only in the axial direction (parallel to spring deformation) while preventing radial movement that would cause tilting or shifting. This mediator structure ensures reliable spring deformation without requiring complex manufacturing of the entire assembly.
2Reliability
If guides are added to restrict movement of elastic members, then the reliability of deformation is improved, but the device complexity increases
Solution Approach 1:
Instead of making the entire pedal device complex, guides are added only at the specific locations where spring seats are positioned within the cylinder. This local addition of guiding features provides the necessary constraints only where needed, without complicating other parts of the device. The guides are simple cylindrical or slot structures that can be easily integrated into the existing design.
3Ease of operation
If spring seats are constrained to move only in the deformation direction, then the pedaling operation becomes smoother, but the structural complexity increases
Solution Approach 1:
Guides serve as intermediary components that smoothly constrain spring seat movement to the axial direction. The guides provide a low-friction surface for the spring seats to slide against, ensuring smooth pedaling operation. The simple cylindrical or slot geometry of the guides minimizes the increase in structural complexity while achieving the desired operational smoothness.
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 pedal device effectively suppresses the inhibition of deformation of the elastic members, ensuring stable reaction forces are generated, and preventing the pedal from becoming stuck during operation.
Implementation Method 1
a first elastic member configured to be deformed by a pedaling force from the pedal as the pedal rotates, and to generate a reaction force against the pedaling force of the operator
Implementation Method 2
a second elastic member configured to be deformed by a pedaling force from the pedal as the pedal rotates, and to generate a reaction force against the pedaling force of the operator
Implementation Method 3
The first guide moves in the deformation direction of the first elastic member relative to the second guide and slides with the second guide in the deformation direction of the first elastic member
Implementation Method 4
The second holder moves in the deformation direction of the second elastic member relative to the third guide, and slides with the third guide in the deformation direction of the second elastic member
Data Source
AI summary
In a pedal device, a first elastic member is deformed in accordance with a sliding operation of a first guide of a first holder in a vehicle longitudinal direction with a second guide of a second holder by a force from a pedal when the pedal rotates. Further, due to the force from the pedal when the pedal rotates, a second elastic member is deformed in accordance with a sliding operation of the second guide in the vehicle longitudinal direction with a third guide of a guide member. Further, the first guide and the second guide are made to restrict movement in a vehicle vertical direction. In addition, the second holder and the third guide are made to mutually restrict movement in the vehicle vertical direction.