Door Closer Mechanism With Integrated Damper Lever
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Solution Overview
Problem
Conventional door closer mechanisms are complex and difficult to manufacture and operate, often causing damage and noise due to abrupt opening, which can lead to items being scattered from compartments like glove compartments.
Innovation Solution
A door closer mechanism featuring a base with a channel, a damper device with a housing and groove, a lever, a rotary member, and a spring biasing member, along with a damper member and cover, allowing for easy assembly and effective operation by absorbing the impact of door movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional door closer mechanisms are used, then door movement can be damped, but the structure becomes complicated and difficult to manufacture and operate
Solution Approach 1:
The patent combines the damper device and the door closer mechanism into a single integrated assembly. The damper piston rod is directly connected to the door closer lever, merging two separate functions (damping and closing) into one unified mechanism. This reduces the number of separate components and simplifies the overall structure while maintaining both damping and door closing functions.
Solution Approach 2:
The integrated mechanism serves multiple functions simultaneously: the damper provides impact absorption during door opening, the spring biasing member provides the closing force, and the lever mechanism provides the mechanical advantage for door actuation. This multi-functional design eliminates the need for separate damper and door closer devices, reducing complexity.
2Reliability
If conventional door closer mechanisms are used, then door impact can be absorbed, but the mechanism is difficult to operate by users
Solution Approach 1:
The door closer mechanism operates automatically without requiring user intervention. The spring biasing member automatically provides the closing force when the door is released, and the damper automatically controls the opening speed. The mechanism serves itself by utilizing the door's own weight and the spring's stored energy, eliminating the need for manual operation while maintaining reliable impact absorption.
3Device complexity
If simple door closing mechanisms are used, then the structure is simple, but abrupt opening causes damage and noise
Solution Approach 1:
The damper device is positioned to act before the door completes its opening motion. The damper piston rod connects to the lever in such a way that damping force is applied during the opening process, cushioning the door movement before it can cause abrupt impact. This prior cushioning prevents the harmful effects of sudden door opening while maintaining a relatively simple mechanism structure.
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 mechanism allows for easy manufacturing and operation, effectively damping door movement to prevent damage and noise, ensuring items remain secure within compartments.
Implementation Method 1
a spring biasing member disposed in the housing and engaged with the shaft for applying a spring biasing force onto the shaft
Implementation Method 2
a damper member includes a cylinder connected to the housing, and a piston connected to the lever for resisting or damping the rotational movement of the lever relative to the housing
Data Source
AI summary
A door closer mechanism includes a base attached to a door frame, a housing attached to a door panel and a groove formed in the housing, a lever includes one end slidably engaged with the base and another end connected to the housing with a pivot axle, a rotary member is pivotally connected to the housing with the pivot axle, a shaft is slidably engaged in the housing and pivotally connected to the rotary member with a pivot pin, and a spring biasing member is disposed in the housing and engaged with the shaft for applying a spring biasing force onto the shaft and for biasing the shaft toward one end portion of the channel of the base.