Transverse Leaf Spring Suspension for Lower Vehicle Floor Height
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Solution Overview
Problem
Existing vehicle suspension systems with coil springs limit the ability to lower the floor height of the vehicle body due to the upward/downward width of the coil spring.
Innovation Solution
A suspension system featuring a transverse leaf spring with a fixed and free leaf end, connected by a link that allows the free leaf end to move in a direction crossing the arm rotation axis, enabling the floor height of the vehicle body to be lowered without spring constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a coil spring is installed in an upward/downward direction to support the lower portion of the vehicle body, then the suspension can absorb vibrations effectively, but the height of the floor of the vehicle body cannot be lowered below a certain height due to the upward/downward width of the coil spring itself
Solution Approach 1:
The patent transitions from a conventional vertical coil spring arrangement to a transverse leaf spring configuration oriented in the left/right direction. This dimensional change allows the spring to be positioned laterally rather than vertically, thereby reducing the upward/downward width that previously constrained floor height. The link mechanism connects the transverse spring to the arm assembly, enabling the spring force to be transmitted effectively while occupying minimal vertical space.
2Stability of the object's composition
If the upper end of the coil spring is installed to support a lower portion of the vehicle body, then the suspension structure can maintain vehicle body stability, but the floor height is limited by the spring's upward/downward width
Solution Approach 1:
The transverse leaf spring is oriented in the left/right direction rather than vertically, changing the dimension in which the spring force is applied. The link mechanism transfers this lateral spring force to the arm assembly, maintaining vehicle body stability while allowing the floor to be positioned lower since the spring no longer occupies vertical space above the floor.
Solution Approach 2:
The link acts as an intermediary component that connects the transverse leaf spring to the arm assembly. It transfers the spring force from the lateral direction to the vertical suspension movement, enabling the decoupling of spring orientation from floor height constraints while maintaining the stabilizing function.
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 design allows for the lowering of the vehicle body floor height without spring-related limitations, enhancing space utilization and maintaining suspension durability and noise reduction.
Implementation Method 1
a transverse leaf spring including a fixed leaf end, of which a relative position to the arm rotation axis is fixed, and a free leaf end that is moved in a direction crossing the arm rotation axis with respect to the fixed leaf end
Data Source
AI summary
A suspension for a vehicle includes an arm including an arm body, a transverse leaf spring including a fixed leaf end and a free leaf end, and a link connecting the arm and the transverse leaf spring. The link includes a first link end connected to the arm body and configured to rotate relative to the arm body, where a rotation center of the first link end is located at the arm body, a second link end connected to the free leaf end and configured to rotate relative to the arm, and a link body that extends between the first link end and the second link end, the link body being spaced apart from the arm body.