Gravity-Locked Ironing Board Hinge for Spring-Free Angle Adjustment
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Solution Overview
Problem
Existing steam ironing appliances with hinge devices for adjustable inclinations are costly to manufacture and difficult to use due to the location of the release button, which can lead to ergonomic issues and finger pinching risks.
Innovation Solution
A pivotally mounted ironing board with an articulation device featuring a rotatable first part and a movable second part, where the locking element engages or disengages through a notch by translating the ironing board, allowing automatic locking via gravity without a spring mechanism, enabling easy adjustment and secure positioning in multiple angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a spring locking system is used in the hinge device, then the ironing board can be immobilized at different inclinations, but the manufacturing cost increases
Solution Approach 1:
The invention extracts and eliminates the spring component from the locking system. Instead of using a spring-loaded locking mechanism, the patent employs a simple geometric locking system where a locking element engages with notches cut into the hinge components. This removes the need for expensive spring manufacturing and assembly while maintaining the adjustable inclination capability through multiple notch positions.
Solution Approach 2:
The invention replaces the expensive spring mechanism with inexpensive geometric features (notches and locking elements) that are simple to manufacture. The locking elements are basic mechanical components that can be produced at low cost through standard manufacturing processes, significantly reducing the overall manufacturing cost while maintaining functionality.
2Reliability
If the release button is located at the hinge device level, then the locking mechanism can be actuated, but the user manipulation becomes difficult and finger pinching risk increases
Solution Approach 1:
The invention changes the spatial arrangement of the release mechanism from a lateral button press at the hinge level to a vertical motion of the ironing board itself. The user releases the locking mechanism by moving the ironing board up or down along its support mast, which translates the locking element out of engagement with the notch. This dimensional change makes the release operation intuitive and safe, eliminating finger pinching risks while maintaining reliable locking.
Solution Approach 2:
The ironing board's own weight and motion serve the dual purpose of both positioning the board at the desired inclination and actuating the release mechanism. When the user moves the board vertically, the board's weight automatically drives the locking element out of the notch and allows it to engage with the new notch position, eliminating the need for a separate release button and making the system self-actuating.
3Stability of the object's composition
If a spring device is used for locking, then the hinge device can maintain locked positions, but the device complexity and manufacturing cost increase
Solution Approach 1:
The invention extracts the spring component entirely from the system, replacing it with a passive geometric locking system. The stability of locked positions is achieved not through elastic forces from springs but through the mechanical interlocking of locking elements with notches cut into the hinge components. This simplifies the device structure while maintaining position stability.
Solution Approach 2:
The invention replaces the elastic-mechanical spring system with a geometric-mechanical locking system. Instead of using spring force to maintain locked positions, the patent uses the geometry of notches and locking elements that naturally maintain stable positions through their interlocking shapes. This substitution eliminates complex spring mechanisms while achieving the same stability function through simpler geometric means.
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
This solution provides a cost-effective, ergonomic, and user-friendly steam ironing appliance with automatic locking in various positions, enhancing usability and safety by eliminating the need for a spring system and simplifying the locking mechanism.
Implementation Method 1
the notch has a position and a shape suitable for the locking element to engage automatically in the notch under the effect of the weight of the ironing board
Data Source
Figure 1~2.
Figure 3~4
Figure 5~6
AI summary
A steam ironing and/or garment steaming apparatus comprising an ironing board (5) against which a garment to be ironed can be placed for steam treatment, said ironing board (5) being pivotally mounted by means of a hinge (6) allowing the ironing board (5) to be immobilized at various angles, the hinge (6) comprising a first part (61) which is rotationally movable relative to a second part (62), the first part (61) having at least one notch (69A, 69B) into which at least one locking element (65A, 68) carried by the second part (62) engages to prevent rotation of the hinge (6), characterized in that the second part (62) is translationally movable relative to the first part (61) along a stroke and in a direction allowing the locking element (65A,68) in said notch (69A, 69B).,