Leaf Spring Suspension Layout for Fewer Parts and More Cabin Space
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Solution Overview
Problem
Conventional vehicle suspensions require a large number of parts and complex assembly processes, leading to increased weight, reduced interior space, and longer assembly times due to the use of coil springs and separate shock absorber mounting.
Innovation Solution
A suspension system utilizing a main frame, lower and upper leaf springs, connection brackets, eye clips, and rubber bushes, which reduces the number of parts and assembly operations, and eliminates the need for a separate shock absorber mounting space, incorporating elastically deformable components and a lightweight aluminum eye clip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional suspension with coil spring and separate shock absorber is used, then the shock absorption function is achieved, but the number of parts increases and assembly time increases
Solution Approach 1:
The patent combines the shock absorber and coil spring into a single integrated assembly where the shock absorber is mounted within the coil spring structure. This merging eliminates the need for separate mounting spaces and reduces the overall number of parts while maintaining both shock absorption and vibration damping functions.
Solution Approach 2:
The coil spring structure serves multiple functions: it acts as both the spring element for vibration damping and as the mounting structure for the shock absorber. This multi-functionality reduces the need for additional components and simplifies the overall suspension system design.
2Reliability
If a conventional suspension with coil spring is used, then the shock absorption function is achieved, but the interior space of the vehicle is reduced
Solution Approach 1:
By integrating the shock absorber within the coil spring structure, the patent eliminates the need for separate mounting spaces. This space-saving design allows for more efficient use of vehicle interior space while maintaining full shock absorption functionality.
3Reliability
If a conventional suspension with multiple parts is used, then the shock absorption function is achieved, but the weight of the vehicle is increased
Solution Approach 1:
The integration of the shock absorber and coil spring into a single assembly reduces the total number of parts and fasteners required. This consolidation directly reduces the overall weight of the suspension system while maintaining the same shock absorption performance.
4Reliability
If a conventional suspension with various parts is used, then the shock absorption function is achieved, but the assembly time is increased
Solution Approach 1:
The integrated design of the shock absorber and coil spring assembly reduces the number of separate components that need to be installed and the number of fastening operations required. This simplification directly reduces assembly time and improves production efficiency.
Solution Approach 2:
The shock absorber is pre-mounted within the coil spring structure during manufacturing, creating a pre-assembled unit that requires minimal installation steps during vehicle assembly. This preliminary action significantly reduces the time required during final assembly operations.
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 reduces assembly time and weight, improves fuel efficiency, and expands interior space by simplifying the assembly process and eliminating the need for a separate shock absorber mounting area.
Implementation Method 1
a suspension for a vehicle, which can reduce the assembly time and the weight of a vehicle... a lower leaf spring installed on either side of the main frame; an upper leaf spring disposed above the lower leaf spring... The first lower leaf spring and the second lower leaf spring may have a curved shape so as to be elastically deformable. The upper leaf spring may have a curved shape so as to be elastically deformable.
Implementation Method 2
a rubber bush mounted on either side of the upper leaf spring... an elastic part interposed between the rubber bush cover and the upper leaf spring, and elastically deformed by the upper leaf spring. The elastic part may be made of rubber.
Data Source
AI summary
A suspension for a vehicle may include: a main frame; a lower leaf spring installed on either side of the main frame; an upper leaf spring disposed above the lower leaf spring so as to be spaced apart from the lower leaf spring; a connection bracket supported by the upper leaf spring, and rotatably mounted on the main frame; an eye clip mounted on an end portion of the lower leaf spring, and connected to a wheel; and a rubber bush mounted on either side of the upper leaf spring, and connected to a vehicle body.