Cab Mount Bush Integration for Commercial Vehicle Vibration
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Solution Overview
Problem
Conventional cab mounting apparatuses for commercial vehicles face issues with inadequate vibration absorption and durability, leading to poor ride comfort and increased manufacturing costs due to complex structures and expensive components.
Innovation Solution
A cab mounting apparatus with integrated bush and stopper members in the front mount and bar-like lateral damping rods in the rear mount, utilizing rubber and metal materials for improved shock absorption and reduced manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If separate stopper members are attached to the bush in the conventional front mount, then longitudinal stiffness is reinforced and contact between connecting arm and front bracket is prevented, but assembly becomes troublesome and manufacturing costs increase
Solution Approach 1:
The stopper members are integrated directly into the bush structure as a unitary body, eliminating separate attachment steps and reducing assembly complexity while maintaining the longitudinal stiffness reinforcement function
2Object-affected harmful factors
If separate stopper members and rubber grease are used in the conventional front mount, then frictional contact and noise are prevented, but manufacturing costs increase
Solution Approach 1:
The stopper members are merged with the bush into a single integrated component, reducing the number of parts and assembly steps, which directly lowers manufacturing costs while maintaining the function of preventing frictional contact and noise
3Ease of operation
If conventional bush structure is used in the front mount, then pivotal connection is enabled, but relative displacement between front bracket and connecting arm is not sufficiently absorbed, leading to poor vibration absorption and low durability
Solution Approach 1:
The stopper members are integrated with the bush to form a unitary structure that enhances the bush's ability to absorb relative displacement while maintaining pivotal connection functionality, thereby improving durability and vibration absorption
4Strength
If expensive shock absorbers are used in the conventional rear mount, then lateral movement and vibration are prevented, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive shock absorbers with a simpler, more cost-effective bush structure that provides sufficient lateral stability without the high manufacturing cost of conventional shock absorbers
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
Enhances vibration absorption and ride comfort by integrating bush and stopper members into a single unitary body and using bar-like lateral damping rods, while reducing manufacturing costs and improving durability.
Implementation Method 1
The bush may absorb relative displacement between the front bracket and the connecting arm, thereby preventing longitudinal movement of the cab
Implementation Method 2
The cab mounting apparatus for a commercial vehicle may be configured to connect the cab to the chassis, and to absorb vibrations transmitted from the chassis to the cab while the vehicle is driving
Implementation Method 3
A pair of stoppers may be symmetrically attached to both left and right surfaces of the bush, and each stopper may be made of a shock-absorbing material such as polyurethane. Thus, the pair of stoppers may reinforce longitudinal stiffness of the bush
Implementation Method 4
the pair of stoppers may reinforce longitudinal stiffness of the bush, and prevent contact or interference between the connecting arm and the front bracket
Implementation Method 5
Rubber grease such as NIGLUBE® from NIPPON GREASE CO., Ltd. may be applied between the stopper and the front bracket, thereby preventing frictional contact and noise between the stopper and the front bracket
Data Source
AI summary
A cab mounting apparatus for a vehicle includes a front mount connecting between a front side of a cab and a chassis. A rear mount connects between a rear side of the cab and the chassis. The front mount includes a stabilizer link disposed on a front side of the vehicle, a pair of front brackets individually fixed to the front side of the cab, and a pair of connecting arms individually connecting between respective ends of the stabilizer link and the respective front brackets. Each connecting arm is pivotally connected to each front bracket by a hinge member and a bush. The bush has a pair of stopper members disposed on both ends thereof. The bush and the pair of stopper members are integrated into a single unitary body.