CV Joint Adapter Assembly for Grease Sealing and Shaft Connection
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Solution Overview
Problem
Existing joint arrangements face challenges during installation, particularly in introducing and sealing joint grease effectively, especially when connecting multiple shafts in a drive train system.
Innovation Solution
A joint arrangement comprising a joint, a nut, and an adapter unit, with a cavity sealed by opposing sealing devices, allows for the introduction of joint grease and connection to multiple shafts through a two-part adapter unit that accommodates different radii and torque transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a joint arrangement is designed to connect two shafts with sealing bellows, then the joint can be sealed and lubricated, but the installation process becomes complex and difficult, especially for introducing joint grease
Solution Approach 1:
The joint arrangement is divided into separate functional components: the joint itself, the nut for fixing to the first shaft, and the adapter unit for connecting to the second shaft. This segmentation allows each component to be optimized independently and simplifies the installation process by enabling modular assembly.
Solution Approach 2:
The adapter unit is extracted as a separate component that can be removed or adjusted independently. This allows the joint grease to be introduced into the cavity before the adapter unit is fully installed, making the lubrication process much easier and more accessible.
2Reliability
If the cavity is sealed by two opposing sealing devices, then the joint grease can be retained, but access for introducing joint grease becomes difficult
Solution Approach 1:
The joint grease is introduced into the cavity before the final sealing step. The adapter unit is designed to allow grease introduction through its structure, and once the grease is in place, the sealing devices are fully engaged to retain the grease permanently.
3Adaptability or versatility
If a two-part adapter unit is used to accommodate different radii, then adaptability to different shafts is improved, but device complexity increases
Solution Approach 1:
The adapter unit is designed with two parts that can accommodate different shaft radii and configurations. The first adapter component connects to the joint and the second adapter component connects to the second shaft, allowing a single adapter unit design to work with multiple shaft types and sizes.
Data Source
AI summary
A joint arrangement includes comprising a joint, a nut and an adapter unit. The joint has an inner hub, an outer hub, balls and a cage with recesses for the balls. The inner hub has a recess with an inner toothing for receiving a first shaft. A cavity of the joint arrangement located around the balls is closed on two end sides by a respective sealing device. The adapter unit includes a first adapter portion and a second adapter portion which cooperate to transmit torque across the joint arrangement to or from a second shaft.