Spring-Damper Oven Door Hinge for Gentle, Quiet Closing
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Solution Overview
Problem
Conventional oven hinges often result in sudden and noisy door closure due to the lack of adequate braking action, leading to unsatisfactory operation and user experience.
Innovation Solution
A hinge design incorporating a helical spring and a gas or fluid damper cylinder, combined with a rocker lever mechanism, provides a controlled closing action by applying damping forces to slow down the door movement, ensuring gentle and silent closure even without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If elastic elements are used to promote door opening and closing, then door movement is facilitated, but the door closes suddenly and noisily without adequate braking action
Solution Approach 1:
A damper cylinder is introduced as an intermediary component between the door and the hinge mechanism. This damper applies viscous damping force to the lever element, acting as a mediator that controls the door's closing speed and prevents sudden closure while maintaining the elastic elements' facilitation of door movement.
Solution Approach 2:
The damping force parameter is dynamically adjusted based on the door's position and velocity. The damper cylinder provides variable resistance that increases with closing speed, automatically modulating the braking action to achieve gentle closure without compromising the ease of operation throughout the door's range of motion.
2Object-generated harmful factors
If damping forces are applied to control door closing speed, then sudden closure is prevented, but the hinge structure becomes more complex
Solution Approach 1:
The damper cylinder is designed to perform multiple functions: it provides damping force during door closing, supports the lever element during operation, and can be integrated into the existing hinge mounting structure. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in overall structure complexity.
Solution Approach 2:
The damper cylinder is nested within or integrated with the existing hinge assembly components. The damper piston rod connects to the lever element while the cylinder body is mounted on the hinge housing, creating a compact nested arrangement that minimizes space requirements and avoids significant structural complexity increases.
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 proposed hinge design ensures a gradual and quiet door closure, enhancing operational efficiency and user experience by mitigating the sudden closure issue, while protecting the damping components from heat and wear.
Implementation Method 1
The hinge also comprises a helical spring 9 fitted on the outside of the second box-shaped body 6
Implementation Method 2
A hinge design incorporating a helical spring and a gas or fluid damper cylinder, combined with a rocker lever mechanism, provides a controlled closing action by applying damping forces to slow down the door movement
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The hinge for wings or doors, in particular of electrical appliances, comprises a first box-shaped body (5), a second box-shaped body (6), a connecting element (7) between the first and second bodies (5, 6), and a damper cylinder (15) for applying on the second body (6) an action damping its movement towards the first body (5).