Flexible Door Stopper With S-Shaped Bracket
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Solution Overview
Problem
Conventional door stops damage walls or floors when fixed with screws and are ineffective for higher doors due to their low height and limited stopping power for heavy doors.
Innovation Solution
A door stop with a flexible, S-shaped bracket that can be adjusted and firmly fixed without screws by inserting into existing joints under the baseboard, utilizing its weight to stop doors and featuring an elastic ball or cap for cushioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If door stops are fixed with screws to walls or floors, then they can firmly stop doors, but they cause damage to the wall or floor
Solution Approach 1:
The invention extracts the screw fixation method from the door stop design, replacing it with a spring-loaded expansion mechanism that inserts into existing joints under baseboards. This eliminates the harmful screw penetration while maintaining firm fixation capability through the expansion action of the spring-loaded brackets.
Solution Approach 2:
The patent introduces an intermediary fixation mechanism consisting of spring-loaded expansion brackets that utilize existing joints under baseboards as a mediator between the door stop and the floor. This intermediary system provides secure anchoring without direct damage to the floor surface, as the brackets expand within pre-existing structural gaps.
2Object-affected harmful factors
If door stops are made loose on the floor, then they avoid damage to walls or floors, but they are ineffective for higher doors and heavy doors due to low height and limited stopping power
Solution Approach 1:
The door stop employs a dynamic spring-loaded expansion mechanism that adapts to different door weights and heights. The spring brackets can expand to various degrees based on the applied force, providing proportional stopping power for everything from lightweight interior doors to heavy balcony doors, while remaining loose enough to avoid floor damage.
Solution Approach 2:
The invention changes the physical parameters of the fixation mechanism by using spring-loaded brackets that can adjust their expansion force and position. This allows the same device to effectively stop doors of varying weights and heights by modifying the mechanical parameters of the expansion brackets rather than requiring different fixed-height designs.
3Device complexity
If door stops have fixed height, then they are simple in design, but they cannot accommodate higher doors such as balcony doors
Solution Approach 1:
The spring-loaded expansion brackets provide dynamic adjustability in height and position without complex mechanisms. The brackets can naturally extend or compress based on the required height accommodation, allowing the same simple device design to effectively stop various door types from standard interior doors to tall balcony doors.
Solution Approach 2:
The door stop design achieves universality by incorporating spring-loaded brackets that can adapt to multiple door heights and weights using the same basic structure. The expansion mechanism serves multiple functions: fixation, height adjustment, and force absorption, eliminating the need for different fixed-height designs for different door types.
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 door stop effectively prevents door damage without screwing into walls or floors, accommodating higher doors and providing sufficient stopping power for heavy doors through adjustable and cushioning mechanisms.
Implementation Method 1
The bracket 3 is provided with an elastic ball at the upper end, but can alternatively be provided with an elastic cap
Implementation Method 2
Due to the S-shaped shape of the bracket 3, it gives way when pressure is applied upwards and cushions the door softly
Data Source
Figure 1~3
AI summary
The door stop (1) is ball or cap-shaped and is connected by a screw (2) to an S-shaped part (3) that can be extended. The S-shaped part is at least 2 mm, no more than 4 mm and preferably 2 mm thick. Two attachment elements (4) can be fitted onto the lower S-shaped part.