Chair structure with moveable backrest

A backrest and seat technology, applied in the field of seat structure that can move the waist, can solve the problems of difficult treatment and eradication of lumbar muscle injury, difficulty in maintaining lumbar arch and backward folding, etc.

Pending Publication Date: 2017-06-13
刘高潮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the middle of the lumbar spine as the axis, it is very difficult to maintain the lumbar arch backward without external force. Few people can persist in exercising, making lumbar muscle damage a disease that is not easy to treat and eradicate

Method used

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  • Chair structure with moveable backrest
  • Chair structure with moveable backrest
  • Chair structure with moveable backrest

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] Implementation Option 1: If figure 1 , figure 2 As shown: the seat structure with a movable waist includes a backrest 1, a backrest bracket 6, a movable joint 4 at the middle and lower 1 / 4 of the movable backrest, and at least one set of holes 3 on the backrest bracket, pins for the movable joint Inserted in holes of different heights, the height of the backrest can be adjusted; in this embodiment, the backrest support close to the upper and lower edges of the backrest functions as a limit device, so that the backrest will not fall over. Outer leg 8 is arranged on the back leg of seat, in order to adjust the inclination of whole seat, outer leg can be fixed with pin, also can be fixed with screw thread.

Embodiment approach 2

[0029] Implementation plan two: see image 3 , Figure 4 : the seat structure with movable waist includes backrest 1, backrest bracket 6, movable joint 4, connecting device 3 is similar to trapezoid in shape, and there is a hole 11 inside, and the diameter of the hole is slightly larger than the outer diameter of backrest bracket; there is a limit on the upper end of the connecting device The device 2 has a thread lock 7 at the lower end and a hole 8 in the middle and lower part; the movable joint 4 at the lower 1 / 4 of the movable backrest is a shaft, and the two ends of the shaft are inserted into the holes 8 of the connecting device 3, and there are 3 sets of connecting devices On the back support bar, a long opening is provided downwards at the top of the back support bar, and the connecting device 3 can slide on the back support bar 6 to adjust the height of the backrest, and tighten the threaded lock after adjusting properly.

Embodiment approach 3

[0030] Implementation plan three: see Figure 5 , Figure 6 : There are two movable bolts at the lower part of the movable backrest 1, the body of the movable bolt is installed at the lower 1 / 5 of the backrest, the pin is inserted on the connecting device 3, and a spring can be installed at the rear end of the bolt so that the locking pin will not come out accidentally; Device 3 is formed by bending a tube whose inner diameter is slightly larger than the backrest support rod into a U shape, and then bends it downward near the top cross bar of the U shape, and two protrusions are installed at the bend; the U shape connects The two ports of the device have thread locks 7, and the ports of the U-shaped connection device are set on the backrest support. There is a long slot on the top of the backrest support rod. Adjust the height of the connection device 3 to adjust the height of the lower edge of the backrest. , After adjusting, tighten the two lock nuts.

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PUM

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Abstract

The invention discloses a chair structure with a moveable backrest. The chair structure comprises support legs, a backrest body, a moveable joint, a backrest bracket, a connecting device and a limiting device, wherein the moveable joints are mounted at the lower part of the backrest body; the moveable joint is connected with the backrest bracket through the connecting device; the backrest can rotate within a range limited by the limiting device. By adoption of the chair of the structure, waists can take exercise easily.

Description

technical field [0001] The invention relates to a seat structure, in particular to a seat structure with a movable waist. Background technique [0002] Many people suffer from chronic lumbar muscle injuries to varying degrees, which affects work and study and brings pain to life. When people are in a sitting or standing posture, the weight of the upper body is pressed on the lumbar spine and psoas muscles, which easily causes the lumbar spine to bend. Long-term lumbar forward bending is one of the causes of lumbar muscle damage. The method recommended by doctors to exercise the waist and relieve the feeling of soreness in the waist is to bend the waist back and make the lumbar spine arched. Taking the middle of the lumbar spine as the axis, it is very difficult to maintain the lumbar arch backward without external force. Few people can persist in exercising, making lumbar muscle damage a disease that is not easy to treat and eradicate. Contents of the invention [0003] ...

Claims

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Application Information

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IPC IPC(8): A47C7/40
CPCA47C7/40
Inventor 不公告发明人
Owner 刘高潮
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