Identical Half-Shells for Sealed Molded Part Feed-Through
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Solution Overview
Problem
Existing devices for guiding and sealing long molded parts through device walls require multiple different parts, leading to increased manufacturing effort, assembly complexity, and reduced service life, with existing solutions being cumbersome and costly to replace or repair.
Innovation Solution
A device featuring identical half-shells for the pressure screw with locking contours and a double-threaded internal and external thread system, allowing for quick assembly and sealing, and a plate-like flange with identical halves and interlocking projections for easy connection and sealing of multiple molded parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressure screw consists of two different parts, then the sealing function is achieved, but the number of parts increases and assembly complexity increases
Solution Approach 1:
The patent merges two different half-shells into a single pressure screw component that integrates both sealing and structural functions. The pressure screw combines the sealing collar, thread structure, and positioning features into one unified part, eliminating the need for separate half-shell components while maintaining the sealing function through the integrated collar design.
Solution Approach 2:
The pressure screw is designed as a multi-functional component that simultaneously provides sealing (through the collar), fastening (through the thread), and positioning (through the groove and projection engagement). This universal design replaces multiple specialized parts with a single component that performs all necessary functions.
2Reliability
If the pressure screw consists of two different parts, then the sealing function is achieved, but manufacturing effort increases
Solution Approach 1:
The patent combines multiple manufacturing operations into a single part fabrication process. The pressure screw is manufactured as one integrated component using a single molding or machining process, eliminating the need to separately manufacture and assemble two different half-shells, thereby reducing overall manufacturing effort and cost.
3Duration of action of stationary object
If additional locking means are added to the pressure screw, then the service life is extended, but the device complexity increases
Solution Approach 1:
The locking function is merged into the existing pressure screw structure through the collar with its groove and the corresponding projection on the feed-through nipple. This integration extends service life by preventing loosening without adding separate locking components, as the locking feature is built into the collar itself rather than being a separate element.
Solution Approach 2:
The pressure screw design includes self-locking features where the collar groove engages with the nipple projection to automatically prevent loosening during operation. This self-service locking mechanism extends service life without requiring additional active locking components or complex assembly procedures.
4Ease of operation
If the pressure screw is designed as a single integrated part, then assembly is simplified, but the sealing function may be compromised
Solution Approach 1:
The patent successfully merges the sealing collar with the pressure screw body into a single integrated part. The collar is formed as an integral feature of the pressure screw, combining the sealing function with the fastening function in one component, thereby simplifying assembly while maintaining sealing reliability through the integrated design.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The device has locking contours formed at a collar (4) forming a pressure surface. A latch engagement part and a latch projection are aligned and arranged such that half shells (3) are rotated together transverse to sectional axes of the half shells and transverse to central longitudinal axes. The half shells exhibit an identical form. The half shells are latched by engaging the latch projection into the latch engagement part, when the half shells are brought into a rotated position in which the central longitudinal axes are coaxially aligned.