Rotary Hinge Damper Gap Adjustment for Low-Speed Door Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional hinge devices with dampers have a constant damping effect, which cannot be adjusted to accommodate individual user preferences for door rotation speeds at low speeds.
Innovation Solution
A position adjustment mechanism is implemented to vary the gap between the damper body and rotor, altering fluid flow resistance and thereby adjusting the damping effect, allowing for customizable door rotation speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional hinge device with damper is used, then the door rotation speed is controlled at low speed, but the rotation speed cannot be adjusted according to user preference
Solution Approach 1:
The patent applies the dynamics principle by making the gap between the rotor and receiving portion adjustable rather than fixed. The position adjustment mechanism allows the gap to be dynamically changed according to user needs, enabling variable damping effects and adjustable door rotation speeds while maintaining a relatively simple overall structure
Solution Approach 2:
The patent applies the parameter changes principle by varying the gap dimension between the rotor and receiving portion to change the damping parameter. By adjusting this geometric parameter, the fluid flow resistance changes, which directly controls the door rotation speed, providing adaptability without complex additional mechanisms
2Ease of operation
If the gap between rotor and receiving portion is made adjustable, then door rotation speed can be controlled, but the device structure becomes more complex
Solution Approach 1:
The patent applies the self-service principle by designing the position adjustment mechanism to be operated by the user themselves for adjusting the door rotation speed according to their preferences. The mechanism allows users to independently control the gap size and thus the damping effect, eliminating the need for external adjustment devices or complex control systems
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
Enables precise adjustment of door rotation speeds at low speeds according to user preference by modifying the damping effect through positional changes of the damper components.
Implementation Method 1
a rotary damper (8), which has a rotor (82) and a damper body (81), and in which a space (83) having an inner circumferential surface is formed between an inner circumferential surface of a receiving portion (81A) of the damper body (81) and an outer circumferential surface of the rotor (82)
Implementation Method 2
a gap between the inner surface of the receiving portion and the end surface of the rotor opposed to each other in the direction of the rotation axis of the rotor is changed to be increased or decreased. As a result, a flow resistance of the gap against the fluid is changed, thereby a damping effect of the damper mechanism being changed
Data Source
Figure 1~3
Figure 4~5
Figure 6
AI summary
A rotary damper 8 is disposed between side plates 41, 42 of an inner link 4 of a hinge device. A damper body 81 of the rotary damper 8 is movable with respect to a rotor 82 in a direction of a rotation axis of the rotor 82. A rotatable cam plate 95 and a movable cam plate 96 are disposed between the side plate 42 and the damper body 81. The rotatable cam plate 95 causes the movable cam plate 96 to be moved in the direction of the rotation axis of the rotor 82 according to a rotational position of the rotatable cam plate 95, thereby causing the damper body 81 to be moved in the direction of the rotation axis of the rotor 82. This causes dimensions of a gap S1 formed between a bottom surface of the damper body 81 and a left end surface of the rotor 82 to be changed. As a result, a flow resistance of the gap S1 against a fluid flowing through the gap S1 is changed, thereby adjusting a rotation speed of the rotor 82 when rotated at a low speed.