Valve Rotator Cover Body Segmented Design for Load Distribution
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Solution Overview
Problem
Existing valve rotating devices for internal combustion engines face high production costs and material inefficiencies due to complex housing designs that require multiple steps and high material input, leading to wear and increased costs.
Innovation Solution
A cover body for the valve rotating device comprising a ring-shaped upper and lower part connected by a connecting piece, allowing for a simple, material-saving production method that reduces production costs and distributes load evenly, enabling easy replacement and adjustment of the axial spring element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a housing-shaped cover is used to accommodate the axial spring element, then the structural support is improved, but the manufacturing complexity and material input increase significantly
Solution Approach 1:
The cover body is divided into two separate ring-shaped parts (upper part and lower part) that are connected by connecting pieces. This segmentation allows each part to be manufactured independently with simpler geometry, avoiding the complex housing-shaped design while still providing the necessary structural support for the axial spring element.
Solution Approach 2:
The two ring-shaped parts are merged through connecting pieces to form a complete cover body structure. This merging approach combines the simplicity of individual parts with the structural integrity of a unified design, achieving both ease of manufacture and functional requirements.
2Strength
If a housing-shaped cover is used to accommodate the axial spring element, then the structural support is improved, but the material input and production costs increase
Solution Approach 1:
By segmenting the cover body into two ring-shaped parts with connecting pieces, the design uses material more efficiently. The connecting pieces are positioned to provide necessary structural support with minimal material, avoiding the excessive material input required for a solid housing-shaped cover.
Solution Approach 2:
The connecting pieces are strategically positioned at specific locations to provide localized structural support where needed, rather than using uniform thick walls throughout the entire cover body. This local quality approach reduces overall material input while maintaining necessary strength.
3Stability of the object's composition
If the connecting piece is arranged radially inside the axial spring element, then the structural integration is improved, but the spring element function is hindered
Solution Approach 1:
The connecting pieces are arranged asymmetrically relative to the axial spring element, positioned radially outside rather than inside. This asymmetric arrangement ensures that the spring element can expand and contract freely in its axial direction without interference from the connecting pieces, while still achieving structural integration through the connecting piece design.
4Stress or pressure
If multiple connecting pieces are used to connect the upper and lower parts, then the load distribution is improved, but the manufacturing complexity increases
Solution Approach 1:
The cover body is segmented into multiple connecting pieces that distribute the load between the upper and lower parts. Each connecting piece is a simple element that can be manufactured independently, and their collective effect achieves load distribution without requiring complex integrated structures.
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
The solution enables a cost-effective, compact, and durable valve rotating device with reduced wear on components, allowing for efficient production and improved service life by distributing load evenly and simplifying the design, thus reducing production costs and enhancing performance.
Implementation Method 1
the upper part and the lower part are connected to each other by at least one connecting piece
Implementation Method 2
the upper part and the lower part are axially spaced apart and are adapted to accommodate an axial spring element therebetween
Implementation Method 3
distributing load evenly
Data Source
AI summary
A cover body (2) for a valve rotating device includes a ring-shaped upper part (4) and a ring-shaped lower part (6). The upper part (4) and the lower part (6) are axially spaced apart and are adapted to accommodate an axial spring element (24) therebetween. The upper part (4) and the lower part (6) are connected to one another by at least one connecting piece arranged at the location opposite an insertion position of the axial spring element (24).A valve rotating device (12) having such a cover body is also provided. A ring-shaped base body (22) has a plurality of pockets (16) oriented in a circumferential direction, in each of which a ball (14) and a tangential spring (32) are arranged. The pockets (16) have a variable depth in the circumferential direction such that inclined raceways (26) for the balls (14) arranged therein are formed. The tangential springs (32) push the balls (14) toward an end of the respective pocket (16). The axial spring element (24) is ring-shaped and a first end of the axial spring element (24) is supported on an ring-shaped stop surface (18) of the base body (22) and a second end of the axial spring element (24) is supported on a surface of the upper part (4) of the cover. A surface of the lower part (6) facing away from the axial spring element (24) rests against the balls (14), and wherein the halls (14) and the axial spring element (24) are arranged overlapping in the axial direction.A method for producing a cover both (2) for a valve rotating device is also provided.