Combined Door Hinge with Variable Hydraulic Damping and Stopper
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Solution Overview
Problem
Conventional hydraulic door hinges are economically uneconomical due to high maintenance and production costs, vulnerability, and reduced durability from complex parts, which also affect the efficiency and ease of assembly, while lacking adjustability for speed and strength control.
Innovation Solution
A door hinge combining adjustable compression spring and hydraulic damping with a built-in stopper mechanism, allowing for variable speed and strength control through adjustable components, including an adjustment pin for spring tension and hydraulic pressure, and a magnet for enhanced closing force, enabling the door to remain open at desired positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hydraulic door hinges use complex parts including hydraulic cylinder, hinge axle member, and drive members, then the door closing function is achieved, but the production cost increases and durability decreases
Solution Approach 1:
The patent combines the hinge function and door closer function into a single integrated device. The hinge barrel serves dual purposes as both the hinge axis support and the housing for the door closer mechanism. The drive member is integrated within the hinge barrel structure, eliminating the need for separate hydraulic cylinder and hinge axle member assemblies. This merging of functions reduces the number of parts while maintaining the door closing capability.
Solution Approach 2:
The hinge barrel is designed to perform multiple functions: it serves as the structural support for the hinge rotation, houses the door closer mechanism, contains the hydraulic fluid chamber, and provides the mounting structure for the drive member. This multi-functionality eliminates the need for separate components and reduces overall device complexity.
2Reliability
If conventional hydraulic door hinges use multiple linked parts, then the door closing function is achieved, but the maintenance cost increases
Solution Approach 1:
By integrating the door closer mechanism within the hinge barrel structure, the patent eliminates multiple separate linked parts that would require individual maintenance. The drive member is contained within the hinge barrel, and the hydraulic chamber is integrated into the same structure, reducing the number of potential failure points and simplifying maintenance requirements.
3Ease of operation
If conventional hydraulic door hinges use many linked parts, then the door closing function is achieved, but the assembly ease decreases
Solution Approach 1:
The integration of the door closer mechanism within the hinge barrel structure reduces the number of assembly steps. Instead of assembling separate hydraulic cylinders, hinge axle members, and drive members, the patent provides a unified structure where the drive member is contained within the hinge barrel, simplifying the assembly process.
4Adaptability or versatility
If conventional hydraulic door hinges use fixed spring and hydraulic pressure, then the door closing function is achieved, but the speed and strength control flexibility is lost
Solution Approach 1:
The patent incorporates an adjustable spring mechanism that allows the user to modify the spring tension according to different door weights and closing speed requirements. The drive member can be repositioned along the hinge barrel to adjust the hydraulic pressure and damping characteristics. This dynamic adjustability enables the same hinge to be optimized for different applications without requiring multiple fixed-design hinges.
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 solution reduces production and maintenance costs, enhances durability, and provides adjustable speed and strength control for door opening and closing, ensuring efficient operation and easy assembly, while allowing for customizable door positioning.
Implementation Method 1
an adjustable compression spring to operate the opening and closing of the door
Implementation Method 2
hydraulic damping with a built-in stopper mechanism, allowing for variable speed and strength control
Implementation Method 3
a magnet for enhanced closing force
Data Source
AI summary
An apparatus combining a door hinge and a door closer is provided. In one embodiment, the hinge provides a variable hydraulic damping speed control with spring action closing, as well as an optional stop action. In one embodiment, the hinge of the present invention includes an adjustable compression spring to operate the opening and closing of the door. After the door has closed to approximately 20 degrees or so, the hydraulic component of the door may then control the speed of the door preferably from approximately 20 degrees until closed. The hydraulic component can also be adjusted to vary the speed and force of the door opening and closing. A pair of magnets may be present in the control cylinder of the hinge to provide more force to complete the closing function. Additionally, a stop function allows for the door to remain open and in place in one embodiment.