Chair with separate and interconnecting type lumbar and thoracic supports

Abstract

The present invention relates to an apparatus for effectively purifying and neutralizing toxic gases such as odors, fumes or various volatile organic compounds generated by research laboratories, chemical processing factories or hospitals where medicinal products are handled. The apparatus according to the present invention comprises: a main body having an intake, an exhaust and a control panel; a pre-filter, a first filter, first and second neutralizing pellet beds, and a second filter which are mounted in the apparatus main body and are placed from the intake to the exhaust in that order; and a blower and a driving device placed between the first and second neutralizing pellet beds. The apparatus effectively purifies and neutralizes toxic gases and collects fine particles or dust. Thus, the apparatus helps to maintain health of researchers, people who perform experiments, workers in chemical factories, or medical workers, since the filter and neutralizing pellet bed are configured in a cartridge form, the apparatus is low-maintenance. Also, additional connection of other facilities or pipes is not required. Therefore, the apparatus has high usability due to the independent compact form and function thereof, and can be driven with less noise.

Description

TECHNICAL FIELD[0001]The present invention relates to a chair with separate and interconnecting type lumbar and thoracic supports. More particularly, the present invention relates to a chair with separate and interconnecting type lumbar and thoracic supports in that a back support is physically divided into a lumbar support and a thoracic support, the lumbar support is formed to be curvable, and the lumbar and thoracic supports are configured to be interconnected to each other, so that, when a sitter tilts his / her upper or lower back backward for rest or tension relief, the lower back area of the sitter is comfortably brought into contact with and supported by the lumbar support with a backward tilt of a relatively large angle, and at the same time, the upper back area of the sitter is comfortably brought into contact with and supported by the thoracic support with a backward tilt of a relatively small angle. Therefore, the lumbar and thoracic supports share the task of comfortably ...

AI Technical Summary

Benefits of technology

[0023]The ergonomic chair with separate and interconnecting type lumbar and thoracic supports according to the present invention as described above has advantageous effects in that the back support is physically divided into the lumbar support and the thoracic support, the lumbar support is formed to be curvable, and the lumbar and thoracic supports are configured to be interconnected to each other, so that the lumbar vertebra and the thoracic vertebrae are clearly and tightly supported during sitting in a correct posture and they are tightly supported without generating a gap between the lumbar vertebra and the chair when the sitter tilts his / her upper and lower back far backward for rest or tension relief, thereby increasing in comfortableness and easefulness and having the excellent posture stability without overturning the chair, and selectively the height of the armrest can be easily adjusted according to the height of the sitter and a use aspect thereof, thereby more improving in comfortableness and easefulness and giving a good sense of seating to a seat.

Problems solved by technology

These pains in the waist or spine are caused by a sitting of a continuous tension for hours, a habitually bad sitting posture, a sleep under a wrong posture and environment, or an applying of a big power in a wrong posture and so forth.

Since this phenomenon gets worse around the boundary between the lumbar vertebra and the thoracic vertebrae, there is a problem in that it is a major cause the boundary between the waist or waist part and the back is inversely strained or the sitter feels inconvenience.

However, since the body sizes and the postures of the sitters are difference from each other, it is not easy to select the proper auxiliary cushions in well with the volume, shape and elasticity thereof.

Also, when the auxiliary cushions do not fit them properly, it has a marginal effect or on the contrary the posture thereof can become bad, or there is a fear of the loss thereof.

Also, because the back support is erectly and smoothly formed, when the sitter tilts the upper and lower back far backward, the gap is still generated between the lumbar vertebra and the back support, thereby it is ergonomically unsatisfactory in terms of comfortableness.

Moreover, since the bending angle becomes larger in the boundary between the erected waist support 3 and the back support 4 tilted backward, still there is a problem in that it is a major cause the boundary between the waist or waist part and the back is inversely strained or the sitter feels inconvenience.

Also, because the metal back support frame 4a of the conventional chairs 1′ or 1″ has a strip shape to be exposed to outside, there is a problem in that it lacks a sense of beauty in external appearance.

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