JP3032668U - Chair slide adjustable backrest - Google Patents

Abstract

(57) [Abstract] [Problem] Backrest with adjustable slide of chair. SOLUTION: A universal rotating structure is provided with two cylindrical guide rods, ring sleeves are fitted to both ends of the guide rods, and a U-shaped fixed clamp is rotatably attached to each ring sleeve. Is formed on the hand rest of the chair with the fixing clamp and the screw member for tightening, and a retractable rod is provided inside the lower portion of the backrest.
Both ends of the expandable rod are fitted to slide sleeves fitted to the outer circumference of the guide rod and can be attached to chairs of different widths, and when used, the slide sleeves can be slid on the guide rod to allow the front and rear positions of the backrest. Can be adjusted, and the L-shaped positioning rod provided on the slide sleeve can be fitted and positioned in the positioning hole formed on the guide rod.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a kind of backrest with adjustable slide of a chair, which is mounted on a well-known hand rest of a chair, and a slide sleeve on a guide rod provided on both sides is horizontally moved back and forth. The present invention relates to a device which can be positioned and has a function of correcting a sitting posture after a person sits down and not pressing the chest.

[0002]

[Prior art]

 In general, not only editors and typists but also salaried workers often carry out word processing tasks in offices, but if they sit in an office chair for a long time, they feel pain in their body and blood circulation is poor. It could even cause a chronic illness over a long period of time. It has been medically proved that the muscles are degenerated when the same posture is continued for a long time, and therefore, after sitting for a certain period of time, it is necessary to perform an appropriate muscle-releasing exercise.

Presently, there are chairs having a reclining function in the market, and by leaning back against the chairs, the tired mind and body can be healed. However, during work, the body is often slightly leaned forward, and since it does not sit on the entire seat, its back bends and becomes a so-called stoop. It could cause pain.

[0004]

[Problems to be solved by the device]

 The present invention is an adjustable backrest structure that can be attached to a well-known chair, the backrest position can be horizontally moved back and forth, the back of the human body can be leaned, and the user can take a correct sitting posture. It is an object to provide a kind of chair with a slidable backrest that does not put a pressure on the chest.

[0005]

According to the invention of claim 1, the backrest 1 has an appropriate size, and one backrest support plate 15 and an expansion / contraction for fitting the backrest support plate 15 inside. The expandable and contractable rod 10 is provided with two hollow pipes fitted to each other, and is fitted in long fitting grooves 121 and 111 provided on the upper side of the two horizontally installed hollow pipes. The lower end of the backrest support plate 15 is fitted and the recessed convex points 122 are provided at appropriate positions in the fitting groove 111 of the outer hollow tube, and the backrest 1 is externally attached to both sides of the telescopic rod 10. A backrest 1 provided with circular end caps 131, 141 projecting to the front and coupled with fixed gears 131, 141, respectively, and two guide rods 31, 32, each of which is a horizontally installed circle It is a long rod with a long shape, and it is equidistantly spaced at appropriate intervals above. The guide rods 31 and 32 provided with a number of positioning holes 33 and two slide sleeves 22 are fitted on the guide rods 31 and 32, respectively, and on the side opposite to the backrest 1 at the rear end of the outer periphery. There are fixed gear mounting seats 211 and 221 into which the fixed gears 131 and 141 are inserted and fitted, respectively, and one of them is a slide sleeve 21 and a push button 216 and an L-shaped rod-shaped positioning are provided at appropriate positions. One push button seat 217 accommodating the rod 213 is provided in a protruding manner, the positioning rod 213 is pivotally connected to one projecting bearing seat 212, and an elastic member 214 is mounted below the horizontal end of the positioning rod 213. The vertical ends of the positioning rod 213 are normally inserted into the through holes 215 formed on the slide sleeve 21, and the slide sleeves 21 and 22 and the four rings are provided. 2 and 4 are fitted to the front and rear ends of the guide rods 31 and 32, respectively, and are fastened on the guide rods 31 and 32 with fixing bolts 41. The rod 4 has a columnar connecting portion and is freely rotatable on the connecting portion. A U-shaped fixed clamp 42 is pivotally connected, and a tightening screw member 43 is formed on one side of the fixed clamp 42. A ring sleeve 4, a combination of the above, and an adjustable backrest of a chair. The guide rods 31 and 32 are attached to the well-known chair handrest by the fixed clamps 42, and the backrest 1 is horizontally moved back and forth on the chair after pressing the push button 216, and the push button 216 is pushed. As a slidable backrest for chairs, which has a locking function after opening, the backrest 1 can be tightly attached to the back of the human body, corrects the sitting posture, and does not press the chest. That.

The invention according to claim 2 is the backrest capable of sliding adjustment of the chair according to claim 1, in which a circular elastic pad 431 is provided at an end of the tightening screw member 43 inside the fixed clamp 42. The chair has a slidable backrest, which is characterized in that the hand rest of the chair is prevented from being damaged when it is coupled and the tightening screw member 43 is tightened.

The invention of claim 3 is the backrest capable of sliding adjustment of the chair of claim 1, in which the guide rods 31, 32 and the slide sleeves 21, 22 are directly fixed to both sides of the chair, A long handle provided on 21, 21 is fixed to the backrest 1, and the entire backrest can be moved horizontally.

According to a fourth aspect of the present invention, in the backrest capable of sliding adjustment of the chair according to the first aspect, the contact surface of the backrest with the human body has an appropriate arc shape so that the backrest can closely contact with the human body. The chair has a backrest with adjustable slide.

[0009]

[Embodiment of device]

 The slide-adjustable backrest of the chair of the present invention is attached to a well-known chair, and is provided with two cylindrical guide rods, and ring sleeves are fitted to both ends of the guide rods, respectively. A U-shaped fixed clamp is freely pivoted to form a universal rotating structure, which is mounted on the hand rest of the chair with the fixed clamp and a tightening screw member, and an elastic rod is provided below the backrest. Both ends of the telescopic rod are fitted to slide sleeves fitted around the outer circumference of the guide rod, and can be attached to chairs of different widths.When using, the slide sleeves are slid on the guide rods to support the backrest. The front-rear position can be adjusted, and the L-shaped positioning rod provided on the slide sleeve can be positioned by fitting it into the positioning hole opened on the guide rod. Leaning is assumed to closely contact with the body back is a horizontally movable on a chair, to provide an auxiliary effect that does not compress the chest correct seat attitude.

[0010]

【Example】

 As shown in FIGS. 1 and 2, the present invention includes a sofa-type backrest 1 having an appropriate size, and a hollow inner tube 12 and a hollow outer tube are provided inside the backrest 1. A telescopic rod 10 formed by fitting 11 is accommodated, and fitting grooves 121 and 111 are provided on the upper side of the inner tube 12 and the outer tube 11, respectively, and the same backrest support plate 15 is formed in the fitting grooves 121 and 111. The expansion rod 10 does not rotate in the backrest 1 by fitting and supporting the same, and the length of the expansion rod 10 can be changed. The convex point 122 can be moved while forming a friction state in the fitting groove 121 of the inner pipe 12, and the end caps 131 and 141 at the left and right ends of the telescopic rod 10 project to the left and right outside the backrest 1. Then, the ends of the expansion rod 10 and the end caps 131 and 141 The expansion rod 10 is fixed by sandwiching both sides of the backrest 1, and fixed gears 131 and 141 protruding from the end caps 131 and 141 are provided, and the fixed gears 131 and 141 are slid sleeves, respectively. It is possible to fit into the protruding fixed gear mounting seats 211 and 221 provided on the outer circumferences of 21, 22 and the fitting of the projection and the groove is used for fitting the fixed gears 131 and 141 and the fixed gear mounting seats 211 and 221. The backrest 1 can be changed in various inclination angles (see FIG. 6), and the slide sleeves 21 and 22 are slidably fitted around the outer circumferences of the guide rods 31 and 32, respectively. Circular ring sleeves 4 are fitted on the outer circumferences of both ends, and the ring sleeves 4 are fastened to the guide rods 31 and 32 with fixing bolts 41. A U-shaped fixed clamp 42 that is extended and freely rotates is pivotally connected, and each ring sleeve 4 and the fixed clamp 42 form a universal rotating structure. The fixed clamp 42 can be mounted on a chair handrest at various angles. (See FIG. 6), and the fastening clamp 42 is fastened on the chair's handrest with a single fastening screw member 43 so that the entire backrest structure can be attached to a well-known chair and One elastic pad 431 is provided at the front end of the screw member 43 for preventing damage to the hand rest of the chair when the guide clamp is fixed by the fixing clamp 42.

As shown in FIGS. 3, 4 and 5, one slide sleeve 21 of the two slide sleeves 21 and 22 of the present invention has a supporting seat 212 extending in a projecting position at an appropriate position. An L-shaped positioning rod 213 is pivotally connected to the support seat 212, an elastic member 214 is provided below the horizontal portion of the positioning rod 213, and the positioning rod 213 is inclined with the elastic member 214. The guide rod 31 that is supported by the slide rod 21 and has the vertical end of the positioning rod 213 extended under normal conditions into the through hole 215 formed on the slide sleeve 21. A positioning hole 33 having the same shape as the through hole 215 is also provided on the upper side, and after the slide sleeve 21 is slid on the guide rod 31, the vertical end of the positioning rod 213 extends into the positioning hole 33. The slide sleeve 21 is prevented from sliding further when it is inserted, and the horizontal end of the positioning rod 213 is pressed and lowered by the pressing operation of the push button 216. At the same time, the vertical end of the L-shaped positioning rod 213 can be moved out of the positioning hole 33, and the entire push button 216 is provided so as to project above the inside of the push button sheet 217 on the slide sleeve 21, which is attractive. A convenient pressing part is formed.

As shown in FIG. 6, in use, the present invention mounts the guide rods 31, 32 and the backrest 1 on the hand rest of a known chair by the fixing clamp 42 and the tightening screw member 43, among which, The backrest 1 is adjusted to various inclination angles according to actual demand, and after pushing the push buttons 216 side by side, the backrest 1 is moved horizontally on the guide rods 31 and 32, and when the push button 216 is released, Since the backrest 1 can be positioned horizontally and the entire backrest 1 can be tightly adhered to the back of the human body, it has the function of correcting the sitting posture and has the effect of not pressing the chest. In addition, the telescopic rod 10 provided in the backrest 1 can be adjusted according to the width between the two guide rods 31 and 32, and the ring sleeve 4 on the guide rods 31 and 32 loosens the fixing bolt. After that, it is moved by the guide rods 31 and 32, so that the present invention can be applied to a well-known chair having different widths and different types of hand rests.

FIG. 7 shows another structural embodiment of the present invention, in which the structures of the guide rods 31, 32 and the slide sleeves 21, 22 are fixed to both sides of the seat of the chair, and the slide sleeve 21, 22 With the long handles 5 and 6 provided on the rear side, it is connected to the backrest 1, and the backrest 1 can be slid horizontally back and forth on the guide rods 31 and 32. Similarly, a DIY (Do It Yourself) type The function of the adjustment chair is achieved.

The contact surface of the backrest 1 with the human body is formed in an appropriate arc shape so that it can closely contact the back of the human body.

[0015]

[Effect of device]

 The present invention is an adjustable backrest structure that can be attached to a well-known chair, the backrest position can be horizontally moved back and forth, the back of the human body can be leaned, and the user can take a correct sitting posture. It is a kind of chair with a slidable backrest that does not put pressure on the chest.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is an exploded perspective view of a telescopic rod portion of the present invention.

FIG. 3 is an exploded perspective view of a guide rod and a slide sleeve portion of the present invention.

FIG. 4 is an exploded perspective view of a positioning rod structure in a push button according to the present invention.

FIG. 5 is a view showing a positioning state by locking the slide sleeve of the present invention.

FIG. 6 is a view showing a usage state of the present invention.

FIG. 7 is a schematic view of another structural embodiment of the present invention.

[Explanation of symbols]

1 ... Backrest 10 ... Expansion / contraction rod 11 ... Inner tube 12 ... Outer tube 111, 121 ... Fitting groove 122 ... Convex point 1
3, 14 ... Fixed gear 131, 141 ... End cap 15 ... Back support plate 21, 22 ... Slide sleeve 211, 221 ... Fixed gear mounting seat 212 ...
-Bearing seat 213-Positioning rod 214-Elastic member 215-Through hole 216-Push button 217-Push button sheet 31, 32 ... Guide rod 33-Positioning hole 4.・ Ring sleeve 41
・ ・ ・ Fixing bolt 42 ・ ・ ・ Fixing clamp 43 ・ ・ ・ Tightening screw member 431 ・ ・ ・ Elastic pad 5, 6 ・ ・ ・ Long handle

Claims (4)

[Scope of utility model registration request] 1. A backrest 1 having an appropriate size, and on the inside thereof, one backrest support plate 15 and a telescopic rod 10 to which the backrest support plate 15 is fitted, the telescopic rod 10 being one of two. Long fitting grooves 121, 11 which are formed by fitting empty tubes to each other and are provided on the upper sides of the two horizontally installed hollow tubes.
1, the lower end of the backrest support plate 15 is fitted in, and
Concave convex points 122 are provided at appropriate positions in the fitting groove 111 of the outer hollow tube, and the backrest 1 is provided on both sides of the telescopic rod 10.
A backrest 1 provided with circular end caps 131, 141 protruding to the outside and coupled with fixed gears 131, 141 respectively, and two guide rods 31, 32, which are circles installed horizontally A guiding rod 31, which is a long rod having a shape, and is provided with a plurality of positioning holes 33 at an appropriate distance above the rod.
32 and two slide sleeves 22, which are fitted onto the guide rods 31 and 32, respectively, and fixed gears 131 and 141 are inserted and fitted on the opposite sides of the backrest 1 at the outer periphery rear end, respectively. Gear mounting seats 211 and 221 are provided, and a push button 216 and an L-shaped positioning rod 213 are provided at appropriate positions on one of the slide sleeves 21.
One push-button seat 217 accommodating the same is provided in a protruding manner, and the positioning rod 213 is provided with one protruding bearing seat 212.
The elastic member 214 is mounted below the horizontal end of the positioning rod 213, and the vertical end of the positioning rod 213 normally enters into the through hole 215 provided on the slide sleeve 21. 21 and 22, and four ring sleeves 4, respectively, the above-mentioned guide rods 31, 3
It is fitted to the front and rear ends of 2 and the guide rod 3 is fixed with the fixing bolt 41.
A U-shaped fixed clamp 42, which has a columnar connecting portion and is freely rotated, is pivotally connected to the connecting portion 1, 32, and a tightening screw member 43 is provided on one side of the fixing clamp 42. The ring sleeve 4, which is perforated, is the back of the chair that is a combination of the above and the guide rod 3.
1, 32 are mounted on a well-known chair hand rest by a fixed clamp 42, and after pressing the push button 216, the backrest 1 is horizontally moved back and forth on the chair, and the locking function after opening the push button 216. A backrest with a slidable chair, characterized in that the backrest 1 can be tightly attached to the back of the human body, the sitting posture is correct, and the chest is not pressed. 2. A chair with a slidable backrest according to claim 1, wherein a circular elastic pad 431 is coupled to an end of the tightening screw member 43 inside the fixed clamp 42. Backrest with adjustable slide for the chair, characterized in that damage to the hand rest of the chair when the 43 is tightened is prevented. 3. A backrest with adjustable slide of a chair according to claim 1, in which the guide rods 31, 32 and the slide sleeves 21, 22 are directly fixed to both sides of the chair, and the long handle is placed on the slide sleeves 21, 22. A chair-sliding adjustable backrest characterized in that the guide rods 31, 32 are fixed to the backrest 1 so that the entire backrest can be moved horizontally. 4. The backrest with adjustable slide of the chair according to claim 1, wherein the contact surface of the backrest with the human body is formed into a proper arc shape so that the backrest can be closely contacted with the human body. Featuring a backrest with adjustable slide on the chair.