Bionic posture correcting frame

Abstract

A bionic and posture-correcting backrest for study, including a bracket body disposed at the rear of a desk via a mounting rack. An adjustable element is provided on a frame between the chest/abdomen and the desk edge as well as between the chin and lower part of abdomen (slightly above the thighs). The adjustable element is a fist distance away from the desk edge if a user sits on the chair with the correct sitting position. In this way, the “forward sitting position” and the “backward sitting position” or any sitting position therebetween can be achieved and meanwhile freely switched. The adjustable element ensures an appropriate space being formed between the head, eyes, neck, chest, waist, back, elbows and a desk/chair.

1 . A bionic and posture-correcting backrest for study, comprising: a bracket body disposed at the rear of a desk via a mounting rack, wherein
 an adjustable element is provided on a frame which is between a user's chest/abdomen and the desk edge as well as between the user's chin and lower part of abdomen slightly above the thighs;   the adjustable element is a fist distance away from the desk edge if the user sits on the chair with the correct sitting position;   in this way, a “forward sitting position” and a “backward sitting position” or any sitting position therebetween can be achieved and meanwhile freely switched;   the bracket body comprises at least one adjustable tubular pile ( 25 ) and a pectoral/ventral plate ( 29 );   the pectoral/ventral plate ( 29 ) is moveably connected with an upper adjustable plate ( 34 ); and   inside of the adjustable tube ( 25 ) is sheathed with a chin adjustment element to adjust the height of a chin rest ( 1 ).   
     
     
         2 . The bionic and posture-correcting backrest for study of  claim 1 , wherein said adjustable element is that the bracket body comprises the pectoral/ventral plate ( 29 ) and 1-3 adjustable tubular pile(s) ( 25 ) whose inside is sheathed with adjustable tubes ( 24 );
 the length of the adjustable element equals to the distance between two points with one from the upper end of the chest to the lower part of the abdomen and the other one from the lower end of the bracket body to the upper side of the thighs;   the width of the adjustment element equals to the distance between two points with one at 2.5 cm in the middle of the left and right chest and the other one is the two sides of the chest;   the upper end of the adjustable tubular pile ( 25 ) is sheathed with a pad cover ( 32 ) comprising a reversed pin ( 87 );   inside the pad cover ( 32 ) is sheathed with a first adjustable tube ( 24 );   the lower end of the first adjustable tube ( 24 ) is sheathed with a first adjustable pin ( 27 ), which is larger than the adjustable tube ( 24 ) and fits with the adjustable tubular pile ( 25 );   the upper end of the first adjustable tube ( 24 ) sheathed with the chin rest ( 1 );   the chin rest ( 1 ) comprises a chin pad ( 2 ), a frame cover ( 3 ), a button plate ( 4 ), a spring ( 5 ), and a frame base ( 7 ) that are sheathed with one another;   a button ( 6 ) on the button plate ( 4 ) extends out of an aperture ( 8 ) of the chin pad ( 2 );   a sleeve ( 9 ) of the button plate ( 4 ) is sheathed on the upper end of a connecting rod ( 10 );   a follow block ( 11 ) that is attached to the lower end of a connecting rod ( 10 ) is against by an adjustable arm ( 12 ) at one side of the upper end of the first adjustable pin ( 27 );   a transverse shaft ( 14 ) inside the adjustable groove ( 13 ) under the adjustable arm ( 12 ) fixes the first adjustable pin ( 27 ) to the two walls of one side of the first adjustable tube ( 24 );   the lower end of the adjustable arm ( 12 ) is against by a spring ( 5 ) of a base plate ( 78 );   the lower part of the adjustable arm ( 12 ) is in the shape of a “z” and is sheathed with the pin block ( 20 ), whose one side comprises an inclined recess ( 16 ) and whose one end is the pin head ( 17 );   the pin block ( 20 ) is disposed in a pin room ( 21 );   the adjustable tubular pile ( 25 ) at one side of the pin head ( 17 ) of the first adjustable pin ( 27 ) is disposed from top to bottom with the equidistant positional adjustment holes ( 22 );   inside of the upper end of the first adjustable tube ( 24 ) is sheathed with the pad cover ( 32 ) for the reversed pin ( 87 );   inside of the pad cover ( 32 ) is sheathed with the second adjustable tube ( 124 ) and a second adjustable pin at the lower end;   the upper end of the second adjustable tube ( 124 ) is covered by the chin rest ( 1 ); the lower end of the second adjustable pin is against by the upper end of the adjustable arm ( 12 ) of the first adjustable pin ( 27 ) at the other side;   when the second adjustable tube ( 124 ) and the first adjustable tube ( 24 ) slide to the base plate ( 78 ) of the adjustable tubular pile, the pin head ( 17 ) of the second adjustable tube ( 124 ), adjacent to one side of the adjustable arm ( 12 ), passes through the first adjustable tube ( 24 ) and one aperture of the adjustable tubular pile ( 25 );   when the first adjustable tube ( 24 ) is pulled to its limit to the corresponding position of the upper part of the adjustable tubular pile ( 25 ), on the other side, the pin head ( 17 ) of the first adjustable pin ( 27 ) passes through one aperture of the adjustable tubular pile ( 25 );   the first adjustable tube ( 24 ) of one side of the pin head of the second adjustable pin of the second adjustable tube ( 124 ) is disposed with positional adjustment holes ( 22 ) from top to bottom;   the upper end of the adjustable groove ( 13 ) of another adjustable arm ( 112 ) is reversely disposed with the spring ( 5 ); the spring ( 5 ) is placed on a block ( 61 ) that is extended from the wall of the first adjustable pin or the second adjustable pin;   another adjustable arm ( 112 ) extends downwards with an inclined foot that is sheathed with an inclined aperture of another pin block ( 120 ) and a circular pin is used to connect the adjustable tubes as a whole;   at the front of the adjustable tubular pile ( 25 ) and the pectoral/sternal plate ( 29 ) is moveably connected with an upper adjustable plate ( 34 ) in the transversal direction; the width of the upper adjustable plate ( 34 ) is equal to the width of the pectoral/sternal plate ( 29 ) and the length of the upper adjustable plate ( 34 ) is equal to the distance of the fist (to the desk) plus the length of part in the mounting bracket ( 41 );   the two sides of the upper adjustable plate ( 34 ) are disposed with recesses that fit with a moveable pin ( 95 ) of the mounting bracket; the mounting bracket ( 41 ) is reversely disposed at the bottom of the desktop ( 88 );   the adjustable plate cover of the mounting bracket ( 41 ) comprises an upper plate ( 85 ) and a base plate ( 84 ); and   the top two ends and the front end of the upper plate ( 85 ) are each connected with a baffle ( 79 ) and disposed with the moveable pins ( 95 ).   
     
     
         3 . The bionic and posture-correcting backrest for study of  claim 2 , wherein
 said reversed button ( 106 ) is sheathed below the chin rest ( 1 );   the chin rest ( 1 ) of the adjustable tube ( 24 ) comprises a chin pad ( 2 ), another button plate ( 104 ), and lever arms ( 28 );   the chin rest ( 1 ) is sheathed at the upper ends of the two adjustable tubes ( 24 );   the upper ends of the two lever arms ( 28 ) pass through the apertures at the opposite inner sides of the two adjustable tubes ( 24 ) to moveably connect with the upper end of the connecting rod ( 10 ) respectively;   the apertures at the upper ends of the two lever arms ( 28 ) are moveably connected with the transverse shafts ( 14 ) on the chin rest ( 1 );   the upturned sides at the lower ends of the two lever arms ( 28 ) are inserted into the bottom of a connecting groove ( 66 ), which is reversely disposed in the chin rest ( 1 ) and which is on another button plate ( 104 );   another button plate ( 104 ) is hanged on the two lever arms ( 28 ) via hanging rods ( 43 ) at the front and back of the connecting groove ( 66 ); the chin rest ( 1 ) of the adjustable tube ( 24 ) comprises a chin pad ( 2 ) and another lever arm ( 128 ); the chin rest ( 1 ) is sheathed on the upper end of the adjustable tube ( 24 );   the aperture at the upper end of another lever arm ( 128 ) is moveably connected with the transverse shaft ( 14 ), which is at the other side of the connecting tube and which is on the adjustable tube ( 24 );   the lower end of another lever arm ( 128 ) at the other side of the adjustable tube ( 24 ) inclinedly extends to the bottom of the chin rest ( 1 );   the upper end of the first adjustable tube ( 24 ) is covered by the chin rest ( 1 ) and the lower end of the first adjustable tube ( 24 ) is sheathed with a first adjustable pin ( 27 ), which is bigger than the first adjustable tube ( 24 ) and which fits with the adjustable tubular pile ( 25 );   the two adjustable pins ( 27 ) are parallelly connected with each other to form the pin head of an adjustable pin ( 227 );   the pin head ( 17 ) of the adjustable pin ( 227 ) can face one side or face both sides; the pin head ( 17 ) of the first adjustable pin ( 27 ) and the adjustable tubular pile ( 25 ) is disposed with the positional adjustment holes ( 22 ) from top to bottom;   on one side of the pin head ( 17 ), a side button ( 206 ) is extended from the adjustable groove ( 13 ) of the adjustable tubular pile ( 25 ); the side button ( 206 ) comprises an upper button block ( 44 ) and a lower button block ( 45 );   the upper button block ( 44 ) and the lower button block ( 45 ) are respectively at one end inside the first adjustable tube ( 24 ) to connect with the upper end of the adjustable arm ( 12 ) and the lower outer side of the first adjustable pin ( 27 );   one side of the external adjustable tubular pile ( 25 ) is connected with the upper/lower ends of an upper circular tube ( 47 ) and a lower circular tube ( 48 ) that are sheathed with the spring ( 5 ); and   the upper button block ( 44 ) and the lower button block ( 45 ) of the two adjustable tubular piles ( 25 ) are transversally connected as a whole.   
     
     
         4 . The bionic and posture-correcting backrest for study of  claim 1 , wherein
 said bracket body comprises 1-3 adjustable tubular piles ( 25 ), whose inside is sheathed with adjustable column ( 49 ) and which combines with the pectoral/sternal plate ( 29 );   the length of the adjustable element is equal to the distance of two points with one from the upper end of the chest to the lower part of the abdomen and the other one is from an underframe ( 89 ) of the bracket body to the upper side of the thighs, the width of the adjustment element equals to the distance of two points with one at 2.5 cm in the middle of the left and right chest or the sternal plate ( 30 ) is narrow but the ventral plate ( 31 ) has the same width as the abdomen;   the upper end of the adjustable column ( 49 ) is connected with the chin rest ( 1 ); the other three sides of the adjustable column ( 49 ) form the frame edge ( 64 ); from the middle point of the left and right frame edges ( 64 ) extends downwards with a section;   an acute angle triangle is formed from the middle point of such section to separate the adjustable column ( 49 ) into a rear plate and a front plate; one surface of the rear plate becomes thinner to zero along the rear plate of the adjustable tubular pile ( 25 ) while one surface of the front plate becomes thinner along the front plate of the adjustable tubular pile ( 25 ) to be the gear head ( 18 ) and fit with the positional adjustment gears ( 23 );   the rear side of the front plate of the adjustable column ( 49 ) on the gear head ( 18 ) passes through the front side and extends with a rectangle button underframe ( 89 ) in the transversal direction, which fits with the adjustable groove ( 13 ) of the adjustable tubular pile ( 25 );   the button underframe ( 89 ) matches with the reversed pin ( 87 ) of another button ( 306 ); another button ( 306 ) on the two adjustable tubular piles ( 25 ) can be transversally connected as a whole;   at the connection point between the ventral plate ( 31 ) and the sternal plate ( 30 ) is moveably connected with an upper adjustable plate ( 34 ); the left and right ends of the upper adjustable plate ( 34 ) are disposed with equidistant positional adjustment gears ( 23 ), which fit with the mounting bracket ( 41 );   a bracket position correction element is disposed between the upper adjustable plate ( 34 ) and the pectoral/sternal plate ( 29 ); the adjustable cover of the mounting bracket ( 41 ) comprises a cover plate ( 82 ), a median plate ( 83 ), a base plate ( 84 ), a wheel ( 72 ), a moveable plate ( 98 ), adjustable cover pin blocks ( 220 ), the spring ( 5 ) and another handle ( 165 ); on the opposite side of the wheel ( 72 ) is respectively disposed with a column ( 73 ); on the one side of the two adjustable cover pin blocks ( 220 ) is respectively disposed with the column ( 73 );   the apertures at the two ends of the two moveable plates ( 98 ) are moveably connected with wheel ( 72 ) and the columns ( 73 ) of the two adjustable cover pin blocks ( 220 ); the other side of the adjustable cover pin blocks ( 220 ) is against the spring ( 5 ); the above structure fits with the space formed by the median plate ( 83 ) and the cover plate ( 82 ); one side of the two adjustable cover pin blocks ( 220 ) passes through the median plate ( 83 ) and the adjustable groove ( 13 ) of the inner side of the baffle ( 79 ) with a section; and   the two adjustable cover pin blocks ( 220 ) is extendable along the adjustable groove ( 13 ); the median plate ( 83 ), the baffle ( 79 ) and the base plate ( 84 ) form a transversal gap ( 137 ); the shaft ( 74 ) on the wheel ( 72 ) passes through the aperture of the cover plate ( 82 ) to connect with another handle ( 165 ).   
     
     
         5 . The bionic and posture-correcting backrest for study of  claim 4 , wherein
 said bracket position correction element is disposed with a movable connection between the pectoral/sternal plate ( 29 ) and the upper adjustable plate ( 34 ); they are connected by bosses ( 67 ) that fit with the hinge block ( 60 ) of the pectoral/sternal plate ( 29 ) and the upper adjustable plate ( 34 );   the rear side of the hinge block ( 60 ) of the upper adjustable plate ( 34 ) is made into a vertical plane and the plane is concave; a long strip-shaped gap ( 37 ) is disposed from top to bottom of the two ends of the hinge block ( 60 ) of the pectoral/sternal plate ( 29 ) that corresponds to the hinge block ( 60 );   there is a space at the rear side of an adjustable block ( 71 ) between the two strip-shaped gaps ( 37 ); if the adjustable block ( 71 ) is too thick, it is appropriate to open a transversal gap ( 137 ) at the upper or lower adjustable block ( 71 ) of the upper adjustable plate ( 34 );   because the hinge block ( 60 ) is projected backwards, the resilient adjustable block ( 71 ) is also projected backwards; and   the bracket body can be hanged on the upper adjustable plate ( 34 ) and is rotatable forwards and backwards.   
     
     
         6 . The bionic and posture-correcting backrest for study of  claim 4 , wherein at the front of the lower end of the adjustable column ( 49 ) and at two sides of another button ( 306 ) are respectively disposed with 1-2 gear heads ( 18 ), which matches with positional adjustable gear ( 23 ) at the front of the adjustable tubular pile ( 25 );
 the lower end of the adjustable column ( 49 ) is disposed with a bow-shaped leaf spring ( 51 ); a bow point ( 52 ) of the bow-shaped leaf spring ( 51 ) is against the inner side of the rear wall of the adjustable tubular pile ( 25 );   the adjustable column ( 49 ) is the adjustable tube ( 24 ); the lower end of the adjustable tube ( 24 ) is disposed with the bow-shaped leaf spring ( 51 );   the bow point ( 52 ) of the bow-shaped leaf spring ( 51 ) is disposed with another button ( 306 ), which extends out of the adjustable groove ( 13 ) at the front of the adjustable tube ( 24 );   the bow points ( 52 ) at two sides of another button ( 306 ) are respectively disposed with the pin head ( 17 ); the pin head ( 17 ) is sheathed with the positional adjustment holes ( 22 ) at the front wall of the adjustable tubular pile ( 25 ); inside the lower end of the adjustable tube ( 24 ) is sheathed with an inner sleeve adjustable pin ( 327 ); the inner sleeve adjustable pin ( 327 ) is between pin slices ( 56 ) that are moveably connected at the lower end of the adjustable tube ( 24 ) and transversally supports the spring ( 5 );   the pin slices ( 56 ) have one side relative to the spring ( 5 ) respectively disposed with a double button ( 406 ); the two buttons extend out of the left and right adjustable grooves ( 13 ) of the adjustable tubular pile ( 25 ); and   the gear head ( 18 ) that is projected from the lower ends of the two pin slices ( 56 ) matches with the positional adjustment gear ( 23 ) from top to bottom at the inner side of the adjustable groove ( 13 ).   
     
     
         7 . The bionic and posture-correcting backrest for study of  claim 4 , wherein
 inside the adjustable tubular pile ( 25 ) is sheathed with the adjustable column ( 49 ), extending from the chest to the lower part of the abdomen and the upper side of the thighs; the chin pad ( 2 ) is at the place where the upper end of the adjustable column ( 49 ) extends forwards at 90°;   the bottom of the upper end of the adjustable column ( 49 ) is disposed with another chin adjustment element; the chin adjustment element comprises a cover plate ( 82 ), a front plate ( 76 ) of the pectoral plate, equivalent to the median plate ( 83 ), a rear plate ( 77 ) of the pectoral plate (equivalent to the base plate ( 84 )), a wheel ( 72 ), moveable plates ( 98 ), the adjustable cover pin blocks ( 220 ), the spring ( 5 ) and another handle ( 165 );   the front plate ( 76 ) and the rear plate ( 77 ) form a vertical gap ( 237 ) therebetween;   the adjustable cover pin blocks ( 220 ) at the left and right of the vertical gap ( 237 ) match with the adjustable column ( 49 ) having the equidistant positional adjustment gears ( 23 );   the shaft ( 74 ) on the wheel ( 72 ) extends out of the aperture of the cover plate ( 82 ) and is fixed with another handle ( 165 ); the column ( 73 ) extending out of the opposite side of the shaft is placed in the aperture ( 8 ) at the front of the rear plate ( 77 ) via the adjustable groove ( 13 ) of the adjustable column ( 49 ); in the middle of the front and rear sides of the pectoral/sternal plates ( 29 ) that are at the left and right sides of the adjustable tubular pile ( 25 ) is disposed with a flat gap extending to the left and right sides; at the upper and lower sides of the flat gap are moveably connected with a moveable pectoral plate ( 58 ), respectively; the moveable pectoral plate ( 58 ) uses the moveable connecting point as the start point and has the same distance at the left, right and top; between the moveable pectoral plate ( 58 ) and the pectoral/sternal plates ( 29 ) is covered by a boss ( 67 );   the moveable pectoral plate ( 58 ) is moveable by 90° between flat and stand positions; the inner side of the upper end of the adjustable tubular pile ( 25 ) is slightly small and is sheathed with the adjustable column ( 49 ) for a vertical cap nut ( 91 );   the adjustable column ( 49 ) has a small upper section and big lower section and is moveably sheathed with a bolt ( 33 ); the lower end of the bolt ( 33 ) is connected with the upper end of an arc-shaped boss ( 167 ); the lower end of the arc-shaped boss ( 167 ) is connected with a knob ( 93 ) that can be transversally rotated;   the lower end of the arc-shaped boss ( 167 ) can also be connected with umbrella-shaped gears ( 94 ); the umbrella-shaped gears ( 94 ) are sheathed with the umbrella-shaped gears ( 94 ) at the two ends of the knob ( 93 ) which is rotatable in the vertical direction; and   the knob ( 93 ) is disposed at the two sides or middle of the lower ends of the adjustable tubular piles ( 25 ).   
     
     
         8 . The bionic and posture-correcting backrest for study of  claim 1 , wherein said on the sternal plate ( 30 ) of the bracket body is disposed with a bracket folding element. 
     
     
         9 . The bionic and posture-correcting backrest for study of  claim 8 , wherein said bracket folding element is above the upper adjustable plate ( 34 ) of the sternal plate ( 30 ) to horizontally separate the bracket body into upper and lower sections;
 the intersection point of the two sections is disposed with a hinge ( 59 );   the left and right ends of the pectoral/sternal plate ( 29 ) are each disposed with a connecting tubular pile ( 62 );   the left/right sides and the three edges of the connecting column in the connecting tubular pile ( 62 ) of the sternal plate ( 30 ) are the frame edge; the lower side extends upward with a gear head, which fits with the positional adjustment gear of the connecting tubular pile ( 62 );   the lower part of the gear head is connected with a handle ( 65 ) extending out of an adjustable groove ( 13 ); the connecting column is moveable ups and downs; and   the frame folds to the front or back to form an integral part with the connecting fastener ( 68 ).   
     
     
         10 . The bionic and posture-correcting backrest for study of  claim 1 , wherein the bracket body is disposed with a ventral plate adjustment element. 
     
     
         11 . The bionic and posture-correcting backrest for study of  claim 10 , wherein said ventral plate adjustment element shortens the ventral plate ( 31 );
 the adjustable tubular piles ( 25 ) are disposed at the left and right sides of the ventral plate ( 31 );   at the lower end of the ventral plate ( 31 ) is disposed with a lower crossbeam ( 40 ), which aligns to the width of the ventral plate ( 31 ); the upper end of the lower crossbeam ( 40 ) is perpendicularly connected with the lower end of the adjustable column in the adjustable tubular pile ( 25 );   the positional adjustment holes ( 22 ) and bolts ( 33 ) are disposed between the adjustable tubular pile and the lower adjustable column; at the front of the lower crossbeam ( 40 ) is moveably connected with the lower adjustable plate ( 35 );   the lower end of the ventral plate ( 31 ) is disposed with another lower crossbeam ( 140 ); another lower crossbeam ( 140 ) is behind the adjustable tubular pile ( 25 ) and is formed by left and right crossbeams;   the side between another lower crossbeam ( 140 ) and the adjustable tubular pile ( 25 ) is covered by bosses ( 67 ) from top to bottom;   the upper end of another lower crossbeam ( 140 ) is connected with the lower end of the adjustable column of the adjustable tubular pile ( 25 );   the left and right frames of the adjustable column and the top three surfaces form the frame edge; the lower surface extends upwards with a turned gear head;   the gear head can be sheathed on the upper or lower equidistant positional adjustment gears of the adjustable tubular pile ( 25 ); at the lower side of the positional adjustment gear is connected with the handle ( 65 ), extending out of the adjustable groove ( 13 ); and   the connecting column is moveable up and down.   
     
     
         12 . The bionic and posture-correcting backrest for study of  claim 1 , wherein at the lower end at the front of the bracket body is moveably connected with a lower adjustable plate ( 35 );
 the width of the lower adjustable plate ( 35 ) equals to the width of the upper adjustable plate ( 34 ) and the length of the lower adjustable plate ( 35 ) is equal to the distance of the fist plus the element that cooperates with the adjustable base plate ( 86 ) and which can adjust the frame to decline forwards and backwards;   at the rear of the lower adjustable plate ( 35 ) and adjacent to the front of the adjustable tubular pile ( 25 ) is disposed with a convex button hole ( 54 ); and   between the front end of the lower adjustable plate and the adjustable base plate ( 86 ) is disposed with a magnet.   
     
     
         13 . The bionic and posture-correcting backrest for study of  claim 1 , wherein
 a clamp structure is applied for the adjustable plate cover and the adjustable cover;   the clamp comprises a mounting bracket follow block ( 99 ), a mounting plate ( 38 ), a connecting plate ( 81 ), fastening bolt ( 75 ), and follow block ( 80 ); the mounting bracket follow block ( 99 ) and the mounting plate ( 38 ) are connected by the connecting plate ( 81 );   one end of the fastening bolt ( 75 ) passes through the mounting plate ( 38 ) and is sheathed with the follow block ( 80 );   at the opposite sides of the mounting bracket follow block ( 99 ) and the follow block ( 80 ) is sheathed with a rubber padding plate;   the clamp is moveable and divides the connecting plate ( 81 ) into upper and lower sections; the lower section, long and narrow, connects one side of the mounting bracket follow block ( 99 ) and is disposed with the adjustable groove ( 13 ) from top to bottom;   the upper section, short and wide, connects one side of the mounting plate ( 38 ) and at the overlapped side with the lower section is disposed with a clamp groove ( 97 ) from top to bottom, which fits with the connecting plate ( 81 ); and   a bolt ( 33 ) extending out of the lower end of the clamp groove ( 97 ) passes through the adjustable groove ( 13 ) to engage with a butterfly cap nut ( 92 ).