Starter Spring Casing Cover Locking Without Screw Sleeves
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing spring casings for starter devices in internal combustion engines occupy a large amount of space due to the need for screw sleeves and additional components for securing the cover plate, which limits their compactness and efficiency.
Innovation Solution
The spring casing design eliminates the need for screw sleeves by using a connecting mechanism formed exclusively by the base body and cover plate, where the cover plate is secured against movement via a projection and opening configuration, allowing for a tool-free mounting and demounting process without additional components, thereby saving space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw sleeves and additional components are used for securing the cover plate, then the connection reliability is improved, but the space consumption increases
Solution Approach 1:
The connecting means is formed by integrating a first part directly into the base body and a second part directly into the cover plate, merging the connection function into the existing structural components rather than using separate screw sleeves and fasteners. This integration eliminates the need for additional components while maintaining secure connection.
Solution Approach 2:
The invention extracts and eliminates the screw sleeves and additional connecting components from the assembly. By removing these unnecessary elements and replacing them with a simplified integrated connecting means, the space consumption is reduced while the connection reliability is maintained through the direct first-part/second-part engagement.
2Strength
If screw sleeves and additional components are used for securing the cover plate, then the connection strength is improved, but the device complexity increases
Solution Approach 1:
The connecting means combines the functions of the base body and cover plate through integrated first and second parts. This merging eliminates the need for separate screw sleeves, holes, and fasteners, reducing the number of components and simplifying the overall device structure while maintaining connection strength.
Solution Approach 2:
The invention removes the complex assembly of screw sleeves, threaded holes, and separate fastening components. By extracting these unnecessary elements and replacing them with a simple integrated connecting means formed by the base body and cover plate themselves, the device complexity is significantly reduced while connection strength is preserved.
3Reliability
If screws and screw sleeves are used for mounting the cover plate, then the securing reliability is improved, but the assembly time increases
Solution Approach 1:
The connecting means merges the mounting function into the structural components themselves. The first part in the base body and the second part in the cover plate form an integrated connection system that eliminates the need for separate screws and screw sleeves, enabling faster assembly while maintaining securing reliability.
Solution Approach 2:
The invention extracts and eliminates the time-consuming screw and screw sleeve assembly process. By removing these separate components and replacing them with an integrated connecting means that can be assembled more quickly, the assembly time is reduced while the securing reliability is maintained through the direct engagement of the first and second parts.
Data Source
AI summary
A spring casing of a starter device of an internal combustion engine has a base body provided with a spring receptacle. A cover plate is provided to cover at least partially the spring receptacle. A connecting device is provided that connects the cover plate and the base body to each other. The connecting device secures the cover plate against a movement relative to the base body in a direction of a center axis of the spring casing. The connecting device only has a first part that is a component of the base body and a second part that is a component of the cover plate and has no further parts. A starter device with such a spring casing is provided.