Adjustable Door Closer with Nested Linking Sets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional door closers have a limited adjusting range, making it costly and impractical to assemble on door frames and panels of different sizes, as multiple linking sets are required, increasing production costs and reducing versatility.
Innovation Solution
The door closer incorporates a fixing set with an elongated tube, a bidirectional set, and an extending set, featuring a guiding track, extending arm, locking board, and connecting panel, allowing for adjustable total length and wider compatibility with varying door sizes through engagement of positioning teeth and adjustable screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the linking set length is adjusted to fit different door sizes, then the adaptability improves, but the device complexity increases due to multiple components and adjustment mechanisms
Solution Approach 1:
The extending arm is nested within the guiding track, allowing the linking set to extend or retract along the track axis. The bidirectional set is nested within the elongated tube, enabling movement along the tube's length. This nesting structure provides length adjustment without requiring multiple separate components.
Solution Approach 2:
The patent introduces movable components including the bidirectional set that can move bidirectionally within the elongated tube, and the extending arm that can move within the guiding track. These dynamic elements allow the door closer to adapt its length to different door sizes while maintaining a compact structure when not in use.
2Adaptability or versatility
If multiple linking sets of different sizes are manufactured for various door sizes, then the adaptability improves, but the manufacturing cost increases
Solution Approach 1:
The door closer is designed as a universal product that can accommodate various door sizes through adjustment mechanisms rather than requiring multiple fixed-size models. The elongated tube with bidirectional movement and the guiding track with extending arm provide continuous length adjustment capability, making a single product design suitable for multiple applications.
Solution Approach 2:
The patent enables continuous parameter adjustment of the door closer length by allowing the bidirectional set to move along the elongated tube and the extending arm to move along the guiding track. This parameter adjustability replaces the need for manufacturing multiple discrete size variants.
3Ease of manufacture
If the linking set is made fixed length for simpler manufacturing, then the manufacturing cost decreases, but the adaptability to different door sizes deteriorates
Solution Approach 1:
The door closer is segmented into distinct functional modules: the elongated tube containing the bidirectional set, the guiding track containing the extending arm, and the connecting components. This segmentation allows each module to be manufactured using standard processes while the assembly provides adjustment capability, balancing manufacturing simplicity with adaptability.
Data Source
AI summary
A door closer has a fixing set, a bidirectional set and an extending set. The fixing set has an elongated tube. The elongated tube has two opposite sidewalls and an opening. The bidirectional set is connected to the fixing set, is movably mounted in the elongated tube and has a connecting panel formed on and protruding from the bidirectional set and extending out of the opening. The extending set is pivotally connected to the bidirectional set and has a guiding track, an extending arm, a locking board and a connecting panel. The extending arm is movably mounted in the guiding track and has a connecting end extending out of the guiding track. The locking board engages the guiding track and is connected to the extending arm to adjust a total length of the extending set. The connecting panel is connected to the connecting end of the extending arm.