Damper Rotor Assembly with Pre-Compressed Elastic Members
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Solution Overview
Problem
Existing damper devices in hybrid vehicles face challenges in assembling elastic members that are preliminarily compressed, leading to complex and difficult assembly processes.
Innovation Solution
A method of assembling a damper device that involves overlapping support and accommodation portions to eliminate offsets, using fixtures to compress and rotate elastic members into place, allowing for easy assembly of multiple elastic members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If elastic members are preliminarily compressed and assembled to rotors, then noise can be inhibited in a predetermined torsional actuation range, but assembling complexity increases and ease of manufacture deteriorates
Solution Approach 1:
The elastic members are preliminarily compressed to a predetermined compression amount before assembly. This preliminary action ensures that the elastic members are pre-compressed to the optimal state for noise inhibition, eliminating the need for complex compression mechanisms during assembly and actually simplifying the overall process.
Solution Approach 2:
A compression amount adjustment mechanism serves as an intermediary device that controls the compression of elastic members. This mechanism allows for precise adjustment of compression amounts during assembly, making the assembly process more manageable and less complex by providing a controlled method to achieve the required pre-compression state.
2Object-generated harmful factors
If multiple elastic members are assembled with preliminary compression, then noise inhibition is improved, but assembly time and productivity are reduced
Solution Approach 1:
Elastic members are pre-compressed to the exact required compression amount before assembly. This preliminary preparation eliminates the need for time-consuming compression adjustments during the assembly process itself, allowing workers to simply install the pre-compressed members without delays.
Solution Approach 2:
The assembly process is segmented into distinct stages: pre-compression of elastic members (done beforehand), and installation (done during assembly). By separating the compression action from the installation action, the actual assembly process becomes faster and more productive while still achieving the required noise inhibition performance.
3Object-generated harmful factors
If elastic members are pre-compressed for noise inhibition, then device performance is improved, but device complexity increases
Solution Approach 1:
A compression amount adjustment mechanism is introduced as an intermediary device that simplifies the overall system by providing a controlled, adjustable method for pre-compressing elastic members. This mechanism allows for easy adjustment of compression amounts and can accommodate different numbers of elastic members, thereby reducing assembling complexity rather than increasing it.
Solution Approach 2:
The compression amount adjustment mechanism provides dynamic adjustability, allowing the compression amount to be changed based on different assembly requirements. This dynamic capability makes the device more versatile and easier to assemble for different configurations, reducing overall complexity.
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
Facilitates easy and efficient assembly of elastic members in the damper device, reducing the complexity and enhancing the assembly process.
Implementation Method 1
a first elastic member and a second elastic member which are each preliminarily disposed in a compressed state
Implementation Method 2
a damper part, including a pair of plates and a plurality of torsion springs
Implementation Method 3
a torque limiter unit that limits a torque to be transmitted between the engine and the drive unit
Data Source
AI summary
In a method of assembling a damper device, a first support portion of a first rotor and a first accommodation portion of a second rotor are overlapped to eliminate an axial offset between them. A first elastic member is placed in the first support portion and the first accommodation portion. A second support portion of the first rotor and a second accommodation portion of the second rotor are overlapped to eliminate an axial offset between them by simultaneously compressing the first elastic member and rotating the second rotor relative to the first rotor to a first-side in a rotational direction. A second elastic member is placed in the second support portion and the second accommodation portion. Simultaneously, the second elastic member is compressed and the second rotor is rotated relative to the first rotor to a second-side in the rotational direction by angle corresponding to the offset between the first support portion and the first accommodation portion.