Plastic Suds Container Joint for Vibration Absorber Torque Transfer
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Solution Overview
Problem
Vibration absorbers in washing machines with plastic suds containers face challenges in transmitting torque without damaging the plastic, as traditional prestressing methods can cause deformation and are not feasible with plastic elements.
Innovation Solution
The design incorporates S-shaped molded parts with flush bores and arched areas on joint pieces to securely fasten vibration absorbers, using a screw and nut system that absorbs and transmits torque through frictional grip, minimizing deformation and allowing precise adjustment of stress on the plastic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a firmly screwed-on connection with prestressing force is used to transmit torque, then torque transmission capability is improved, but the plastic material is damaged and prestressing relaxes rapidly
Solution Approach 1:
The patent introduces an intermediary frictional grip connection between the fastening element and the vibration absorber mounting. Instead of directly prestressing the plastic, the torque is transmitted through friction between the fastening element and the vibration absorber, mediated by the joint pieces that distribute forces. This intermediary friction-based transmission protects the plastic from direct high-stress prestressing while still achieving torque transmission.
Solution Approach 2:
The patent changes the parameter of force transmission from direct mechanical prestressing to friction-based force transmission. By utilizing frictional grip between the fastening element and the vibration absorber mounting, the system achieves torque transmission without requiring high prestressing forces that would damage the plastic material.
2Force
If traditional fastening methods are used, then torque transmission is achieved, but deformation of plastic components occurs
Solution Approach 1:
The patent changes the force transmission parameter from direct mechanical connection to friction-based connection. The joint pieces are designed with frictional surfaces that transmit torque through controlled friction rather than rigid mechanical connection, preventing deformation of plastic components while maintaining torque transmission capability.
3Force
If the fastening element is designed for high torque transmission, then force transmission is improved, but the complexity of the fastening system increases
Solution Approach 1:
The joint pieces serve multiple functions: they provide structural support, enable friction-based torque transmission, distribute forces to protect the plastic, and simplify the overall fastening system. This multi-functionality reduces the need for additional specialized components, thereby reducing overall system complexity while maintaining high torque transmission capability.
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 solution enables reliable and stable transmission of torque forces, reducing part count and installation time, while preventing deformation of the plastic components and ensuring a secure, vibration-damped pivot axis.
Implementation Method 1
a screw and nut system that absorbs and transmits torque through frictional grip
Implementation Method 2
Vibration absorbers on vibrating aggregates of automatic washers have the function of absorbing movement in their direction of action
Data Source
AI summary
A suds container for a washing machine includes plastic and is disposed so as to vibrate inside the machine housing, and includes first and second joint pieces. The first joint piece has a first bore therethrough and the second joint piece has a second bore therethrough aligned with the first bore. The first and second joint pieces are configured to fasten a vibration absorber with a fastening eye of the vibration absorber disposed between the joint pieces. A fastening element is at least partially received in the first and second bores and configured to fasten the vibration absorber. An S-shaped molded part is disposed on the joint pieces and includes third and fourth aligned bores and a first and a second arched area. The first arched area has a U-shape and is disposed between the joint pieces. The second arched area extends so as to overlap a free end of the first joint piece at an outer portion thereof.