Segmented Door Stopper with Rotating Joint for Multi-Position Use
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Solution Overview
Problem
Existing door stoppers are either too large, difficult to manufacture due to complex assembly parts and magnets, or limited to a single position and location, failing to provide a versatile and cost-effective solution for keeping doors open.
Innovation Solution
A portable door stopper comprising a fastening element and a fixing element connected by a joint, allowing the door stopper to be used in multiple positions and locations by adjusting the angle between the elements, and utilizing a connecting element like double-sided tape or a screw for attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a door stopper is made portable and small-sized, then it becomes easy to move and install, but it can only be used in one position and one location
Solution Approach 1:
The door stopper is divided into two separate elements: a fastening element and a fixing element. These elements can be connected or separated, allowing the device to be used in multiple positions (on the door, door jamb, or floor) while maintaining portability when separated.
Solution Approach 2:
The fixing element can be moved between different positions (working position and standby position) relative to the fastening element, creating a dynamic structure that adapts to different usage scenarios while remaining compact when folded.
2Reliability
If a door stopper uses magnets for additional fixing, then it becomes more secure, but it becomes difficult and expensive to manufacture
Solution Approach 1:
The magnetic components are completely removed from the design. Instead of using magnets for fixing, the invention relies on mechanical connections through the joint and adhesion through double-sided tape or glue, significantly simplifying manufacturing while maintaining reliability.
Solution Approach 2:
The invention replaces expensive magnetic components with inexpensive alternatives like double-sided tape or glue for attachment, and simple mechanical joints for connection, making the device much more cost-effective to manufacture while maintaining sufficient holding strength.
3Reliability
If a door stopper consists of several assembly parts connected with screws, then it becomes permanently attached, but it becomes complex and cannot be moved to different locations
Solution Approach 1:
The door stopper is segmented into removable elements connected by a joint rather than permanently fixed with screws. This allows the elements to be easily connected and disconnected, enabling relocation to different positions (door, door jamb, or floor) while maintaining secure attachment during use.
Solution Approach 2:
The connection between elements transitions from static permanent attachment to dynamic removable connection. The joint allows elements to be connected when needed for secure attachment and easily separated when relocation is required, providing both reliability and adaptability.
4Ease of manufacture
If a door stopper is made as a single piece, then it becomes simple to manufacture, but it cannot be adjusted to different positions
Solution Approach 1:
Rather than making the door stopper a single rigid piece, it is divided into two elements that can be connected at different positions. This segmentation allows position adjustment while keeping each individual element simple to manufacture, avoiding the complexity of making a single adjustable piece.
Data Source
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AI summary
The door stopper comprises a fastening element 1 in a permanently fixed position and a movable fixing element 2, which are rotatably connected to each other with a joint 3. The fixing element 2 allows the door stopper to have two positions at different angles in relation to the fastening element 1: the working position and the standby position. The door stopper can be used in different locations in relation to the door: the door stoper can be installed on the door, the door jamb, or the floor.