Embedded Cam Hydraulic Door Closer for Narrow Frame Doors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door closers are typically installed at the upper end of doors, requiring additional space and making them prone to damage from external impacts.
Innovation Solution
A cam hydraulic door closer designed for narrow frame doors, featuring an embedded installation where the door closer main body, horizontal fastener, and vertical fastener are flush with the door body, preventing external damage and saving space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the door closer is installed at the upper end of the door, then the door closure function is achieved, but the door closer is exposed and prone to damage from external impacts
Solution Approach 1:
The door closer main body is embedded within a cavity formed in the door body, with the front surface of the main body flush with the front surface of the door body. This nesting approach protects the door closer from external impacts while maintaining its closure function.
Solution Approach 2:
The patent introduces fasteners (horizontal fastener and vertical fastener) as intermediary elements to secure the door closer main body within the door body cavity. These fasteners provide stable installation and protection without exposing the door closer to external damage.
2Reliability
If the door closer is installed at the upper end of the door, then the door closure function is achieved, but additional installation space is required
Solution Approach 1:
The door closer main body is nested within a cavity formed in the door body, allowing it to be embedded rather than mounted externally. This reduces the space required for installation while maintaining the door closure function.
Solution Approach 2:
The patent utilizes the thickness dimension of the door body by forming a cavity within it, rather than mounting the door closer on the external surface. This dimensional approach saves installation space while preserving functionality.
3Reliability
If the door closer is embedded in the door body, then the door closer is protected from damage and space is saved, but the installation complexity increases
Solution Approach 1:
The installation system is segmented into distinct components: the door closer main body, horizontal fastener, vertical fastener, and cavity structure. This segmentation allows for standardized manufacturing and simplified assembly procedures despite the embedded design.
Solution Approach 2:
The fasteners serve multiple functions: securing the door closer main body, providing structural support, and enabling adjustable positioning. This multi-functionality reduces the need for additional specialized components, simplifying the overall installation process.
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 embedded design ensures the door closer is not exposed, reducing the risk of damage and maintaining the door's appearance while providing effective door closure control.
Implementation Method 1
the hydraulic oil in the left chamber of the door closer is compressed, and the one-way valve is closed. The hydraulic oil can only flow out through the gap between the door closer housing and the plunger
Implementation Method 2
the hydraulic oil constitutes resistance to the spring release. That is, buffering effect is achieved through throttling, so that the door closing speed is controlled
Implementation Method 3
an eccentric cam shaft, the axial direction of the eccentric cam shaft being perpendicular to the extending direction of the door closer main body, at the same time an end of the eccentric cam shaft being fixedly connected with the door frame, another end of the eccentric cam shaft being rotatably pivoted in the door closer main body
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention belongs to the technical field of door closers, and particularly relates to a cam hydraulic door closer for a narrow frame door, which uses an embedded design, wherein a door closer main body (100), a horizontal fastener (200) and a vertical fastener (300) are fixed in a door body in an embedded installation manner. In one aspect, the door closer main body (100) is positionally limited and fixed in the horizontal direction by the horizontal fastener (200). In another aspect, the door closer main body (100) is positionally limited and fixed in the vertical direction by the vertical fastener (300). Thus, the outer surfaces of the door closer main body (100), the horizontal fastener (200) and the vertical fastener (300) are flush with the door body, that neither takes up extra space nor affects the appearance of the door body. Besides, the door closer main body (100) is not exposed outside, not easily damaged, thereby ensuring the usage performance of the cam hydraulic door closer for the narrow frame door and extending its service life.