Device comprising a container and a suction bag for a suction device and assembly method
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Solution Overview
Problem
Existing suction devices for medical and industrial applications face issues with complex assembly, material consumption, aesthetic appearance, and leakage risks due to the design of suction bags, which often require skillful handling and additional components like frames or covers, leading to high costs and inefficiencies.
Innovation Solution
A device comprising a container with a mounting ring that securely holds a suction bag inside, allowing easy assembly and disassembly without frames, ensuring a tight seal and preventing leakage, while eliminating the need for additional disposable materials and tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the suction bag is permanently attached to the cover and disposed of together, then the assembly is simplified, but material consumption and manufacturing costs increase
Solution Approach 1:
The device is divided into separate components: the reusable container with mounting ring and the disposable suction bag. This segmentation allows the suction bag to be replaced independently without discarding the container, reducing material consumption while maintaining simple assembly.
Solution Approach 2:
The suction bag is designed as a disposable component that is discarded after use, while the container and mounting ring are recovered and reused. This approach reduces overall material consumption by eliminating the need to discard the entire assembly.
2Reliability
If the suction bag is connected to the cover with fastening devices, then the suction bag is held securely in folded state, but the design becomes complex and requires skillful assembly
Solution Approach 1:
The fastening function is extracted from the suction bag itself and transferred to the mounting ring on the container. This allows the suction bag to remain simple while achieving secure holding through the separate mounting ring component.
Solution Approach 2:
The mounting ring acts as an intermediary component between the container and the suction bag. It provides the fastening function without requiring complex integration into either the container or the suction bag, simplifying the overall design.
3Ease of operation
If the suction bag is led outwards between the container and cover via a sealing ring, then the suction bag can be positioned, but gaps or microchannels are created through which liquid can escape
Solution Approach 1:
Instead of leading the suction bag outwards through the sealing ring, the mounting ring is positioned on the container and the suction bag is secured to it. This inverted approach eliminates the need for the suction bag to pass through the sealing ring, preventing gap formation while maintaining easy positioning.
4Ease of manufacture
If the cover is pressed onto the container manually or by suction pressure, then the assembly is simple, but a completely airtight connection is not achieved
Solution Approach 1:
The mounting ring is pre-positioned on the container with its sealing surface ready before the cover is attached. This preliminary action ensures that when the cover is pressed on, the sealing connection is immediately effective, achieving both simplicity and airtightness.
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
The device (1), which is intended for a suction device (8) in the field of medical or industrial applications, comprises a container (2) having a container wall (24) having an inner side (241) and an outer side (242) enclosing a container space (200), to which a container bottom (25) is attached at the bottom and a container opening (20) at the top, a cover (6) for closing the container opening (20), a mounting ring (4), and a single-use suction bag (3) having a bag opening (30) at one end and being held within the container space (200) by the mounting ring (4), enclosed and divided into a lower part (31) closed on one side and an upper part (32) provided with the bag opening (30), the upper part (32) being folded back over the mounting ring (4) and part of the lower part (31).so that the mounting ring (4) defines a receiving opening (300) of the suction bag (3). According to the invention, at least one support element (22) is held or formed on the inside (241) of the container wall (24), on which the mounting ring (4) is supported such that the upper part (32) of the suction bag (3) extends within the container space (200) between the mounting ring (4) and the container wall (24) towards the container bottom (25).