Oven Door Hinge Structure for Balanced Closing and Impact Buffering
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Solution Overview
Problem
Conventional oven door hinges face issues with damage due to high kinetic potential energy when closing, leading to potential damage to the door sill or hinge, and require complex adjustments for different oven types.
Innovation Solution
A hinge structure featuring a hinge arm, hinge base, support, connecting piece, rocking bar, and spring mechanism that provides balancing and buffering forces, allowing the door to stop at specific angles and maintain holding pressure, with adjustable components for varying weights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a common spring-based hinge is used to close the oven door, then the door closing function is simple, but the door strikes the door sill with high speed causing damage
Solution Approach 1:
The patent applies beforehand cushioning by introducing a buffer mechanism that activates before the door completes its closing motion. The buffer includes a buffer rod, buffer spring, and buffer limiting component that engage when the door approaches the closed position, absorbing kinetic energy and reducing impact speed before the door contacts the door sill, thereby preventing damage while maintaining simple operation
Solution Approach 2:
The patent uses an intermediary mechanism between the spring-driven door closing force and the door sill contact. The buffer assembly acts as a mediator that intercepts the closing motion, converting the direct impact into a controlled deceleration process through the buffer spring and buffer rod, which absorb and dissipate energy before the door finally rests on the sill
2Object-affected harmful factors
If damping material is added to the door sill to reduce impact, then impact damage is reduced, but the spring still has large potential energy and remains easy to damage
Solution Approach 1:
The buffer assembly serves as an intermediary energy management system between the high-potential-energy spring and the door sill. The buffer spring and buffer rod create a secondary energy absorption pathway that activates before door contact, reducing the kinetic energy that reaches the door sill while also providing a controlled release mechanism that protects the main closing spring from damage
Solution Approach 2:
The buffer mechanism provides beforehand cushioning by engaging the buffer spring and buffer rod before the door completes its closing motion. This pre-engagement absorbs excess kinetic energy and controls the deceleration rate, protecting both the door sill from impact damage and the main spring from damage due to uncontrolled energy release
3Object-affected harmful factors
If a complex hinge structure is used to control closing speed, then impact damage is avoided, but the structure becomes complicated and requires adjustment for different oven types
Solution Approach 1:
The patent applies segmentation by dividing the hinge system into distinct functional modules: the main closing spring for primary door movement, the buffer spring and buffer rod for impact reduction, and the buffer limiting component for controlled engagement. This modular segmentation allows each component to perform its specific function independently, simplifying the overall design while achieving both impact protection and speed control
Solution Approach 2:
The patent implements dynamics through the buffer limiting component that can be adjusted to control when and how the buffer engages. This dynamic adjustment capability allows the hinge to adapt to different door weights and closing speeds without requiring complete redesign, reducing complexity while maintaining effective impact protection across different oven types
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 safe, stable, and convenient operation of oven doors by controlling the closing speed and maintaining a balancing angle between 25° and 85°, reducing the risk of damage and accommodating different oven types with adaptable force adjustments.
Implementation Method 1
a first end of a spring is hung to the connecting shaft, and the other end of the spring is hung to a hanging shaft that is disposed fixedly with the hinge base
Implementation Method 2
When the oven door needs to be closed, it is only needed to let the oven door free, and the oven door is closed because of a resetting function of the spring
Data Source
AI summary
A hinge includes a hinge arm (1) and a hinge base (6) fitting with the hinge arm. A support (2) is disposed between the hinge arm (1) and the hinge base. A first end of the support is movably connected to the hinge arm, and a second end is movably disposed with the hinge base (6). A locking position (12) is disposed on the hinge arm. A connecting piece (4) is disposed in fitting with the locking position. A first end of the connecting piece is movably connected to the body of the support, and a second end is movably connected to a first end of a rocking bar (7). The body portion of the rocking bar (7) is movably connected coaxially to a second end of the support (2) and the hinge base (6). A connecting shaft (72) is disposed on a second end of the rocking bar. A first end of a spring (3) is hung to the connecting shaft, and the other end of the spring is hung to a hanging shaft (62) that is disposed fixedly with the hinge base. Because of the connecting spring, the connecting piece and the support on the key component rocking bar, by adjusting a hole position of a connecting rivet and a force of the spring, a balancing force and a buffering force can be provided for gates with different weights in a changing way, and the adaptability is good.