Adjustable Tattoo Chair Backrest and Support for Multi-Pose Access
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Solution Overview
Problem
Existing tattoo chairs lack adjustability, making it inconvenient to tattoo areas other than the shoulders, leading to discomfort for both the tattoo artist and the person receiving the tattoo.
Innovation Solution
A tattoo chair with a rotatable backrest, adjustable hydraulic brace, and customizable armrests and leg rests, allowing for various poses and improved comfort through gear racks, springs, and detachable components like a headrest and cushion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the backrest is fixedly connected to the seat, then the chair structure is simple and stable, but the person receiving tattoos cannot adopt different poses for tattooing various body parts
Solution Approach 1:
The backrest is made rotatable relative to the seat through a hinge connection, allowing it to dynamically adjust between a leaning position (for shoulder tattoos) and a flush position (for back/belly tattoos). This dynamic transformation enables the chair to adapt to different tattooing scenarios without requiring multiple separate chairs.
Solution Approach 2:
The backrest connection is divided into discrete adjustment positions using a gear rack and supporting rod mechanism. The gear rack provides multiple engagement points, allowing the backrest to be positioned at specific angles rather than continuously adjusted, simplifying the mechanism while maintaining versatility.
2Adaptability or versatility
If the brace height is fixed, then the chair structure is simple, but it is inconvenient to tattoo different body parts such as back, belly, waist and leg
Solution Approach 1:
A hydraulic lifting device is used to replace manual mechanical height adjustment mechanisms. The hydraulic system provides smooth, controlled height adjustment with minimal effort, allowing the brace to be raised or lowered to accommodate different body parts being tattooed.
Solution Approach 2:
The brace is designed with 360-degree rotational capability around the hydraulic lifting device axis, making it dynamic and adaptable. This allows the brace to be positioned at any angle and height, facilitating access to various body parts including upper back, waist, and legs.
3Ease of operation
If the armrests are fixed on both sides of the seat, then the chair structure is simple, but the person receiving tattoos feels uncomfortable when tattooing arms
Solution Approach 1:
The armrest system is segmented into detachable components that can be independently positioned. The armrests can be removed from the seat and reattached to the backrest at different locations, allowing flexible configuration based on the tattooing area. This segmentation enables comfort optimization without requiring a completely complex adjustable mechanism.
Solution Approach 2:
The armrests are designed to be dynamically repositionable between the seat and backrest. Using snap springs and positioning grooves, the armrests can be easily moved to different locations and securely held in place, providing adaptability for different tattooing scenarios.
4Ease of operation
If the supporting rod is not secured, then the backrest can be freely adjusted, but the supporting rod may unexpectedly fall out of the gear rack groove
Solution Approach 1:
A spring mechanism is installed to provide a retaining force on the supporting rod, preventing it from accidentally falling out of the gear rack groove. The spring acts as a safety cushion that maintains constant contact with the rod, ensuring it remains engaged with the gear rack teeth while still allowing intentional adjustment when needed.
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 the person receiving tattoos to adopt comfortable positions, reducing fatigue and improving the tattoo artist's ease of work, facilitating the tattooing of diverse body parts without discomfort.
Implementation Method 1
a spring is provided between the lower part of inner side of the seat and the supporting rod
Implementation Method 2
the brace is a hydraulic lifting device with its height adjusted via a pedal
Data Source
AI summary
A tattoo chair, comprises a backrest (1), a seat (2), a brace (3) for supporting the said seat (2), and a base (4) for allowing the chair to stand stably, characterized in that: the lower end of the said backrest (1) is rotatablely attached to the inner side of the said seat (2); a supporting fixed plate (5) is provided under the bottom surface of the said seat (2); at least one fixed gear rack (10) is mounted from top to bottom on the rear surface of the said backrest (1); a supporting rod (50) is provided on the said supporting fixed plate (5); one end of the said supporting rod (50) is rotatablely attached to the said supporting fixed plate (5), and the other end is put into one of grooves of the said gear rack (10) on the rear surface of the said backrest (1). The present utility model facilitates the person to be tattooed to adopt different poses, so that the tattoo artist can work more easily; further, when getting tattooed, the person will feel free and easy from any discomfort in the various poses.