Door Hinge Buffering Device with Torsion Spring Reset
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Solution Overview
Problem
Existing door hinges with oil cylinders are prone to damage, leading to a loss of buffering effect and reduced safety due to the continuous compression and reset of the internal spring, which shortens the service life of the oil cylinder.
Innovation Solution
A door hinge design that incorporates a torsion spring and linkage mechanism to mechanically assist the oil cylinder's reset, reducing the reliance on the internal spring's compression and reset, thereby prolonging the oil cylinder's service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the oil cylinder is used to provide buffering effect in existing door hinges, then the buffering effect is achieved and safety is improved, but the internal spring is easily damaged and service life is shortened
Solution Approach 1:
A torsion spring is introduced as an intermediary component to assist the oil cylinder's reset process. The torsion spring is connected to the linkage and oil cylinder liner, and during door opening, it accumulates rotational energy that helps push the oil cylinder piston back to its initial position, reducing the burden on the oil cylinder's internal spring and extending its service life while maintaining the buffering effect.
2Reliability
If the internal spring continuously compresses and resets in the oil cylinder, then the buffering function is maintained, but the spring wears out quickly causing damage
Solution Approach 1:
The torsion spring performs preliminary action by accumulating rotational energy during door opening. This pre-stored energy is then released to assist the oil cylinder piston in resetting, reducing the frequency and intensity of compression-reset cycles that the internal spring must endure, thereby extending its service life while maintaining buffering function.
3Device complexity
If the door hinge uses only an oil cylinder for buffering, then the structure is simple, but the oil cylinder is easily damaged during use
Solution Approach 1:
The invention merges the torsion spring mechanism with the existing oil cylinder structure. The torsion spring is integrated into the linkage system and connected to the oil cylinder liner, creating a combined mechanism where the torsion spring assists the oil cylinder in resetting. This combination maintains relative structural simplicity while significantly improving the durability and reliability of the oil cylinder by reducing its operational burden.
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 mechanical assistance in resetting the oil cylinder reduces the wear on the internal spring, enhancing the hinge's durability and safety by maintaining a stable buffering effect over time.
Implementation Method 1
a torsion spring and linkage mechanism to mechanically assist the oil cylinder's reset
Data Source
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AI summary
The present application relates to a buffering device for a door hinge, the door hinge includes a hinge base (11), the buffering device includes a linkage (21), an oil cylinder liner (23), a connecting plate (26) and an oil cylinder (27); one end of the linkage (21) is rotatably connected to the hinge base (11), and the other end is rotatably provided in the oil cylinder liner (23); the connecting plate (26) is arranged on the oil cylinder liner (23), and is driven by the linkage (21) to perform a planar movement close to or away from the hinge base (11); andthe oil cylinder (27) includes a cylinder body (271) and a piston rod (272), the cylinder body (271) is fixedly installed in the oil cylinder liner (23), andthe connecting plate (26) is able to contact with the piston rod (272) with the planar movement of the connecting plate (26). The buffering unit connects the linkage to the oil cylinder through adding a connecting plate, so that the linkage (21) is able to rotate to drive the connecting plate (26) to perform a planar movement close to or away from the hinge base (11), and the planar movement of the connecting plate (26) then drives the oil cylinder (27) to compress or reset, a mechanical force during an opening and closing process of the door hinge is cleverly used to help the oil cylinder (27) reset, thereby reducing a loss of the oil cylinder (27). The present application has advantages of reducing the loss of the oil cylinder of the door hinge and prolonging the service life of the oil cylinder.