Dust filter bag for a vacuum cleaner and assembly of a dust filter bag in a vacuum cleaner
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Solution Overview
Problem
Existing dust filter bag designs for vacuum cleaners lack user-friendly mechanisms for easy insertion and removal, particularly in ensuring the filter bag is always in place during operation, and do not provide a hygienic gripping area for handling filled bags.
Innovation Solution
The design features a holding plate with a fastening surface forming an acute angle relative to the lower gripping section, creating a U-shaped engagement space that allows for easy grasping and handling of the dust filter bag, while the registration projection ensures proper alignment and prevents operation without a filter bag by blocking the filter chamber closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lower gripping section runs parallel to the mounting surface of the retaining plate, then the structure is simple, but the user cannot easily grasp the dust filter bag for insertion and removal
Solution Approach 1:
The lower gripping section is designed to extend in a direction that is not parallel to the mounting surface, creating a three-dimensional configuration. This angular arrangement provides a protruding gripping area that extends beyond the plane of the mounting surface, making it easily accessible to users for grasping the dust filter bag during insertion and removal operations.
2Ease of operation
If the user grasps the retaining plate near the inlet opening for handling, then handling is convenient, but dust contamination occurs during transport of filled bags
Solution Approach 1:
The lower gripping section is extracted as a distinct functional element from the mounting surface area. It is positioned at a distance from the inlet opening and the dust collection area, creating a separate gripping zone that is spatially isolated from the dust-contaminated regions. This allows users to handle the retaining plate and transport filled dust filter bags without exposing their hands to dust contamination.
3Measurement precision
If the registration projection is small for precise positioning, then alignment precision is improved, but the filter chamber closure cannot be blocked effectively
Solution Approach 1:
The registration projection is designed with dynamic characteristics that allow it to perform multiple functions. Its geometry and positioning enable it to provide precise alignment guidance during insertion while also being capable of engaging with corresponding features in the filter chamber closure to effectively block it when the dust filter bag is not properly installed. The projection's shape and size are optimized to balance precision positioning with reliable blocking functionality.
Data Source
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AI summary
The invention relates firstly to a dust filter bag (4) for a vacuum cleaner (1), in particular an electrically operated vacuum cleaner (1), optionally also a vacuum cleaner (1) in the form of a self-propelled floor cleaning device, with a retaining plate (11) to which a dust bag (12) is attached, and which has a preferably closable inlet opening (18) for dust-laden air flowing in an inlet direction substantially perpendicular to an opening surface of the inlet opening (18), wherein furthermore, opposite to the inlet direction of the dust-laden air, an under-engagement section (24) of the retaining plate (11) is formed upstream of a mounting surface (22) of the dust bag (4) on the retaining plate (11).To further develop the dust filter bag, it is proposed that the undercut section (24) overlaps a portion (23) of the retaining plate (11) forming or merging into the mounting surface (22) in a projection direction corresponding to the direction of entry, with an engagement space (25) remaining between the undercut section (24) and the portion (23) of the retaining plate (11). Furthermore, the invention relates to the arrangement of a dust filter bag (4) with a retaining plate (11) and a dust bag (12) attached to the retaining plate (11) in a vacuum cleaner (1).