Oven Door Hinge With Fluid Damper Prevents Rebound
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Solution Overview
Problem
Conventional hinges for kitchen oven doors fail to prevent the closing bump and subsequent rebound, especially with heavy glass doors, and are structurally complex, leading to high production costs and assembly challenges.
Innovation Solution
A hinge with a fluid-operated damper and a kinematic mechanism that includes a transmission element with a contoured end sliding at a predefined angle to slow the door's closing movement, combined with an antibounce system using a screw and integrated elements for secure attachment, simplifying assembly and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional slowing systems are used to prevent door impact, then door closing speed is controlled, but the system cannot prevent bump and rebound of tilting heavy glass doors
Solution Approach 1:
The hinge system employs a dynamic dual-mode operation where the damper provides continuous viscous damping during normal closing, and the antibounce system engages dynamically when door velocity exceeds a threshold or rebound is detected, adjusting the damping characteristics based on real-time door motion conditions
Solution Approach 2:
The system changes the damping parameter from a fixed conventional slowing system to a variable system that adjusts damping force based on door velocity and position, with the fluid-operated damper providing velocity-proportional damping and the antibounce system providing additional force when needed to prevent bump and rebound
2Temperature
If heavy glass materials are used for door insulation, then thermal insulation performance is improved, but the door mass increases causing greater closing bump and rebound
Solution Approach 1:
The fluid-operated damper acts as a counterbalancing mechanism that generates a damping force proportional to door velocity, effectively counteracting the gravitational force on heavy glass doors during closing motion and preventing the harmful effects of high door mass
3Speed
If structurally complex hinges are used to achieve slowing function, then door closing speed is controlled, but production costs and assembly complexity increase
Solution Approach 1:
The invention merges the slowing function and antibounce function into a single integrated hinge assembly where the fluid-operated damper and antibounce system work together as one unified mechanism, eliminating the need for separate complex slowing mechanisms and reducing overall structural complexity
Solution Approach 2:
The system uses a fluid-operated damper that employs hydraulic or pneumatic principles to provide velocity-proportional damping, replacing complex mechanical slowing mechanisms with a simpler fluid-based solution that achieves the same speed control function
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 hinge effectively prevents door rebound and simplifies assembly and installation, reducing production costs and enabling easy installation on existing ovens while maintaining structural integrity.
Implementation Method 1
means for slowing the closing movement of the door, which comprise a container of a fluid-operated damper
Implementation Method 2
a kinematic mechanism designed to interact with elastic means for the facilitated closing and opening of the door
Data Source
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AI summary
Hinge (10, 110) for doors of kitchen ovens, of the type comprising a first arm (11, 111) to be associated with a door for closing a chamber of an oven, and a second arm (12, 112), articulated to the first arm (11, 111), to be associated with the structure of the oven (53, 153), between the first arm (11, 111) and the second arm (12, 112) there being interposed a kinematic mechanism (13, 113) which is adapted to actuate elastic means (14, 114) for the facilitated closing of the door, between the first arm (11, 111) and the second arm (12, 112) there also being interposed means (15, 115) for slowing the closing movement of the door which act continuously between 40° and 0°, the hinge (10, 110) such as to render the second arm integral with the structure of the oven (53, 153).