CN218791386U

CN218791386U - Office chair

Info

Publication number: CN218791386U
Application number: CN202223320317.2U
Authority: CN
Inventors: 安红兵
Original assignee: Guangdong Muqi Chair Industry Co ltd
Current assignee: Guangdong Muqi Chair Industry Co ltd
Priority date: 2022-12-10
Filing date: 2022-12-10
Publication date: 2023-04-07
Anticipated expiration: 2032-12-10

Abstract

An office chair comprises chair legs, a chair seat and a chair back, wherein the chair seat is provided with armrests, the chair back comprises a waist rest, the waist rest comprises a waist rest support and a waist rest plate, an up-and-down moving groove is formed in the waist rest support, an up-and-down moving block is arranged in the up-and-down moving groove in a sliding manner, a first tooth groove is formed in the up-and-down moving groove, and upper-and-lower latch teeth are formed in the up-and-down moving block; the waist rest comprises an upper movable block, a lower movable block, a front-back movable support, a front-back telescopic groove, a front-back movable block, a second tooth groove, a front-back telescopic latch and a waist rest plate, wherein the front-back movable block is arranged on the upper movable block and the lower movable block, the front-back movable support is arranged on the front-back movable block, the front-back telescopic groove is provided with the front-back telescopic latch, and the waist rest plate is arranged on the front-back movable support. The adjusting structure of sliding up and down and sliding back and forth in two directions is arranged to realize up-down adjustment and front-back adjustment of the waist back plate, so that the waist back plate is adapted to the sitting postures of people with different heights to be adjusted, and the problem that the waist back is adjusted to adapt to people with different statures is solved.

Description

Office chair

Technical Field

The utility model relates to an office chair field, concretely relates to office chair.

Background

Office chair, english office chair, the various chairs that are equipped for work convenience in the daily work and the social activity of referring to, currently, office crowd's office time generally is greater than eight hours, office crowd need sit work on the chair about 60% of time every day, back on the office chair plays important role to the good or bad of office chair seat experience, people's figure diverse, but most back of the chair is all unadjustable on the market, people can not adjust to its self needs, lead to people can waist soreness back pain when sitting for a long time, and people can produce bad position of sitting in order to adapt to the back, lead to various lumbar vertebrae diseases for a long time.

Chinese patent document No. 202221880746.2 discloses a waist rest of back of a chair, it includes waist and leans on the board subassembly and leans on the support frame with waist that the board subassembly is connected, waist leans on the support frame to include the regulation supporting seat of being connected with waist and leans on the board subassembly and with the support foot rest of adjusting the supporting seat connection, the support foot rest is connected on the back of office chair, adjust the supporting seat and include the fixed sleeve, set up the activity endotheca in the fixed sleeve, the screw rod subassembly with activity endotheca threaded connection, the end connection waist of activity endotheca leans on the board subassembly, be provided with sharp guiding mechanism between activity endotheca and the fixed sleeve, through rotating screw rod subassembly drive activity endotheca along sharp guiding mechanism displacement.

In this patent document, a linear guide mechanism is provided between the movable inner sleeve and the fixed sleeve, and the movable inner sleeve can be driven to move along the linear guide mechanism by rotating the screw assembly, so as to drive the lumbar support plate assembly to move back and forth.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an office chair.

The utility model provides a technical scheme that its technical problem adopted is:

an office chair comprises chair legs, a chair seat and a chair back, wherein the chair seat and the chair back are installed on the chair legs, the chair back is positioned behind the chair seat, handrails are arranged on two sides of the chair seat, the chair back comprises a waist rest, the waist rest comprises a waist rest support and a waist rest plate, an up-down moving groove is formed in the waist rest support, an up-down moving block is arranged in the up-down moving groove in a sliding manner, a plurality of first tooth grooves which are sequentially arranged from top to bottom are formed in the side wall of the up-down moving groove, and upper clamping teeth matched with the first tooth grooves are formed in the up-down moving block; the waist rest device comprises an upper movable block, a lower movable block, a front movable block, a rear movable block, a front movable support, a rear movable block, a front movable groove, a rear movable groove, a front movable block, a rear movable block, a plurality of second tooth grooves, a front movable clamping tooth and a rear movable clamping tooth, wherein the front movable block is arranged on the upper movable block, the rear movable block is arranged on the lower movable block, the front movable block is movably matched with the front movable block, the rear movable block is arranged in the front movable groove, the rear movable block is provided with a plurality of second tooth grooves which are arranged from front to back, the front movable clamping tooth and the rear clamping tooth are arranged on the groove walls of the front movable groove and the rear movable groove, and the waist rest plate is arranged on the front movable support and the rear movable support.

The utility model discloses in, be equipped with locking device on the fore-and-aft movement seat, be equipped with the through-hole that runs through both ends about it on the fore-and-aft movement seat, run through-hole and the flexible groove intercommunication of front and back, be equipped with the slotted hole that runs through both ends about it on the movable block around, locking device is including the plum blossom handle bolt and the fastening nut that are located the upper and lower both ends of fore-and-aft movement seat respectively, the screw section of plum blossom handle bolt passes back threaded connection fastening nut from running through the through-hole, front and back flexible groove and slotted hole.

The utility model discloses in, the back of the chair still includes linking bridge, back support, headrest and cushion, the back support sets up on the linking bridge, the waist is leaned on and is set up in the back support, the headrest sets up the top at the back support, the cushion is installed on the back support towards seat support one side on the surface.

The utility model discloses in, the chair foot includes universal wheel carrier, air pressure bar and connection structure, be equipped with a plurality of universal wheels on the universal wheel carrier, the middle part of universal wheel carrier is equipped with the installation sleeve, the bottom of air pressure bar is fixed in the installation sleeve, connection structure installs on the air pressure bar.

The utility model discloses in, connection structure is including adjusting pole, cushion connecting seat and back connecting piece, the bottom of cushion connecting seat is connected with the top of pneumatic rod, it passes the top that the cushion connecting seat is connected at the pneumatic rod to adjust the pole, the back connecting piece is connected at cushion connecting seat rear, the back connecting piece is connected with linking bridge.

The utility model discloses in, the seat support includes cushion body and cushion bottom plate, cushion bottom plate bottom is equipped with the cushion shift groove, cushion shift groove rear is equipped with the opening, cushion connecting seat swing joint is in the cushion shift groove, the cushion connecting seat left and right sides is by being equipped with a plurality of cushion screens to the back, the cushion bottom plate is provided with the screens mounting, the cushion bottom plate is provided with screens groove, screens groove and cushion shift groove intercommunication, the screens mounting passes screens groove and is connected with the cushion connecting seat, the fixture block of screens mounting with at cushion screens clearance fit.

The utility model discloses in, the handrail includes cushion connecting piece, handrail support and handrail backing plate, the both sides bottom at the cushion bottom plate is installed to the one end of cushion connecting piece, the other end and the handrail leg joint of cushion connecting piece, the top at handrail support is installed to the handrail backing plate.

The utility model has the advantages that: the waist rest bracket of the utility model is provided with an up-down moving groove, an up-down moving block is arranged in the up-down moving groove in a sliding way, the side wall of the up-down moving groove is provided with a plurality of first tooth grooves which are arranged from top to bottom in sequence, and the up-down moving block is provided with an upper latch and a lower latch which are matched with the first tooth grooves, thereby forming an up-down adjusting structure for adjusting the waist rest plate; the upper moving block and the lower moving block are provided with front and rear moving seats, the front and rear moving seats are provided with front and rear moving supports, the front and rear moving seats are provided with front and rear telescopic grooves, the rear end of the front and rear moving supports is provided with front and rear moving blocks movably matched in the front and rear telescopic grooves, the front and rear moving blocks are provided with a plurality of second tooth grooves arranged from front to back, and front and rear moving latch teeth matched with the second tooth grooves are arranged on the groove walls of the front and rear telescopic grooves, so that a front and rear adjusting structure for adjusting the waist back plate is formed. The adjusting structure which slides up and down and slides back and forth is arranged to realize the up-down adjustment and the front-back adjustment of the waist back plate, so that the waist back plate can adapt to the sitting postures of people with different heights to be adjusted, and the problem that the waist back is adjusted to adapt to people with different statures is well solved.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a left side sectional view of the chair back;

FIG. 3 is an enlarged view at A;

FIG. 4 is a left side view of the present embodiment;

FIG. 5 is a bottom view of the present embodiment;

FIG. 6 is an exploded view of the seat cushion attachment base, the seat cushion bottom plate and the locking fastener;

fig. 7 is a schematic view of a mounting structure of a plum handle screw, front and rear mating grooves and a fastening nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

As shown in fig. 1 to 7, an office chair comprises chair legs 1, a chair seat 2 and a chair back 3, wherein the chair seat 2 and the chair back 3 are mounted on the chair legs 1, the chair back 3 is positioned behind the chair seat 2, armrests 4 are arranged on two sides of the chair seat 2, the chair back 3 comprises a lumbar support 33, the lumbar support 33 comprises a lumbar support bracket 35 and a lumbar support plate 37, an up-down moving groove 361 is arranged on the lumbar support bracket 35, an up-down moving block 362 is arranged in the up-down moving groove 361 in a sliding manner, a plurality of first tooth grooves which are sequentially arranged from top to bottom are arranged on the side wall of the up-down moving groove 361, and upper and lower latch teeth matched with the first tooth grooves are arranged on the up-down moving block 362; the upper and lower moving block 362 is provided with a front and rear moving seat 363, the front and rear moving seat 363 is provided with a front and rear moving support 364, the front and rear moving seat 363 is provided with a front and rear telescopic slot 365, the rear end of the front and rear moving support 364 is provided with a front and rear moving block 366 movably fitted in the front and rear telescopic slot 365, the front and rear moving block 366 is provided with a plurality of second slots arranged from front to rear, the wall of the front and rear telescopic slot 365 is provided with a front and rear moving latch 367 matched with the second slots, and the lumbar support 37 is arranged on the front and rear moving support 364.

Further, back of the chair 3 still includes linking bridge 31, back support 32, headrest 34 and cushion 38, back support 32 sets up on linking bridge 31, lumbar support 33 sets up in back support 32, headrest 34 sets up the top at back support 32, cushion 38 is installed on the surface of back support 32 towards seat support 2 one side.

Further, a locking device is arranged on the front and rear moving seat 363, a through hole penetrating through the upper end and the lower end of the front and rear moving seat 363 is arranged on the front and rear moving seat 363, the through hole is communicated with the front and rear telescopic grooves 365, an oblong hole 3611 penetrating through the upper end and the lower end of the front and rear moving block 366 is arranged on the front and rear moving block 366, and the oblong hole 3611 is used for reserving a space for the front and rear moving block 366 to move forward and backward; the locking device comprises a plum blossom handle bolt 368 and a fastening nut 369, the plum blossom handle bolt 368 and the fastening nut 369 are respectively located at the upper end and the lower end of the front-back moving seat 363, and the screw section of the plum blossom handle bolt 368 penetrates through the through hole, the front-back telescopic groove 365 and the long circular hole 3611 to be connected with the fastening nut 369 in a threaded mode.

In this embodiment, the waist rest support 35 is provided with an up-down moving groove 361, and then the up-down moving block 362 is movably connected with the up-down moving groove 361, so as to realize the up-down adjusting function of the waist rest plate 37; then, the front-rear moving seat 363 is arranged on the upper-lower moving block 362, and the front-rear telescopic groove 365 is arranged on the front-rear moving seat 363, so that the front-rear moving bracket 364 provided with the front-rear moving block 366 can be matched in the front-rear telescopic groove 365 through the front-rear moving block 366, thereby realizing the front-rear adjusting function of the lumbar support plate 37, realizing the up-down adjustment and the front-rear adjustment of the lumbar support plate 37 through the adjusting structure in two directions, and enabling the lumbar support plate 37 to adapt to the sitting postures of people with different heights to be adjusted.

Further, the chair leg 1 comprises a universal wheel frame 11, a pneumatic rod 12 and a connecting structure 13, wherein a plurality of universal wheels are arranged on the universal wheel frame 11, a mounting sleeve 111 is arranged in the middle of the universal wheel frame 11, the bottom of the pneumatic rod 12 is fixed in the mounting sleeve 111, and the connecting structure 13 is mounted on the pneumatic rod 12.

Further, the connecting structure 13 includes an adjusting rod 131, a cushion connecting seat 132 and a backrest connecting piece 133, the bottom of the cushion connecting seat 132 is connected with the top of the air pressure rod 12, the adjusting rod 131 penetrates through the cushion connecting seat 132 and is connected with the top of the air pressure rod 12, the backrest connecting piece 133 is connected behind the cushion connecting seat 132, and the backrest connecting piece 133 is connected with the connecting bracket 31.

In this embodiment, the universal wheel frame 11 is arranged on the chair leg 1, the office chair can be conveniently moved on the ground integrally through the universal wheels on the universal wheel frame 11, then the height of the chair seat 2 can be adjusted by arranging the air pressure rod 12 and arranging the adjusting rod 131 at the top of the air pressure rod 12, and finally the chair leg 1, the chair seat 2 and the chair back 3 are connected through the connecting structure 13 to form the complete office chair.

Further, seat support 2 includes cushion body 21 and cushion bottom plate 22, cushion bottom plate 22 bottom is equipped with the cushion shift groove 221, cushion shift groove 221 rear is equipped with the opening, cushion connecting seat 132 swing joint is in cushion shift groove 221, the cushion connecting seat 132 left and right sides is by being equipped with a plurality of cushion screens 134 to the back, cushion bottom plate 22 is provided with screens mounting 222, cushion bottom plate 22 is provided with screens groove 223, screens groove 223 and cushion shift groove 221 intercommunication, screens mounting 222 passes screens groove 223 and is connected with cushion connecting seat 132, the fixture block of screens mounting 222 with at cushion screens 134 clearance fit.

In the present embodiment, a plurality of seat cushion detents 134 are disposed on the left and right sides of the seat cushion connecting seat 132 from front to back, and the seat cushion bottom plate 22 is provided with the detent fixing member 222, and the detent of the detent fixing member 222 is movably engaged with the seat cushion detents 134, so that the seat cushion bottom plate 22 is connected with the seat cushion connecting seat 132; when screens mounting 222 and cushion screens 134 unblock, because cushion shift slot 221 rear is equipped with the opening, and cushion connecting seat 132 swing joint is in cushion shift slot 221, and the left and right sides of cushion connecting seat 132 is equipped with a plurality of cushion screens 134 by going to the back, and the fixture block of screens mounting 222 can insert arbitrary screens mounting 222 for seat support 2 can carry out the back-and-forth movement and adjust.

Further, the armrest 4 comprises a cushion connecting piece 41, an armrest support 42 and an armrest cushion plate 43, one end of the cushion connecting piece 41 is installed at the bottoms of the two sides of the cushion bottom plate 22, the other end of the cushion connecting piece 41 is connected with the armrest support 42, and the armrest cushion plate 43 is installed at the top of the armrest support 42.

In this embodiment, the armrests 4 are disposed on both sides of the seat 2, and the armrest pad 43 is mounted on the top of the armrest support 42, so that people can place their hands on the armrest pad 43 to relieve fatigue during work.

The above description is only the preferred embodiment of the present invention, and the technical solutions of the objects of the present invention are all within the protection scope of the present invention as long as the objects are achieved by the substantially same means.

Claims

1. The utility model provides an office chair, includes chair foot (1), seat support (2) and back of the chair (3), install on chair foot (1) seat support (2) and back of the chair (3), back of the chair (3) are located seat support (2) rear, seat support (2) both sides all are equipped with handrail (4), back of the chair (3) leans on (33) including the waist, the waist leans on (33) to lean on support (35) and waist and leans on board (37), its characterized in that including the waist: an up-down moving groove (361) is formed in the lumbar support (35), an up-down moving block (362) is arranged in the up-down moving groove (361) in a sliding mode, a plurality of first tooth grooves which are sequentially arranged from top to bottom are formed in the side wall of the up-down moving groove (361), and upper clamping teeth and lower clamping teeth matched with the first tooth grooves are arranged on the up-down moving block (362); the waist rest device is characterized in that a front and rear moving seat (363) is arranged on the upper and lower moving block (362), a front and rear moving support (364) is arranged on the front and rear moving seat (363), a front and rear telescopic groove (365) is formed in the front and rear moving seat (363), a front and rear moving block (366) movably matched with the front and rear telescopic groove (365) is arranged at the rear end of the front and rear moving support (364), a plurality of second tooth grooves arranged from front to rear are formed in the front and rear moving block (366), a front and rear moving latch (367) matched with the second tooth grooves is arranged on the wall of the front and rear telescopic groove (365), and the waist rest plate (37) is arranged on the front and rear moving support (364).

2. An office chair as claimed in claim 1, wherein: be equipped with locking device on the fore-and-aft movement seat (363), be equipped with the through-hole that runs through both ends about it on the fore-and-aft movement seat (363), run through-hole and flexible groove (365) intercommunication around, be equipped with slotted hole (3611) that run through both ends about it on the fore-and-aft movement block (366), locking device is including plum blossom handle bolt (368) and fastening nut (369) that are located both ends about fore-and-aft movement seat (363) respectively, the screw section of plum blossom handle bolt (368) passes back threaded connection fastening nut (369) from running through-hole, flexible groove (365) and slotted hole (3611) around.

3. An office chair as claimed in claim 1, wherein: back of the chair (3) still includes linking bridge (31), back support (32), headrest (34) and cushion (38), back support (32) set up on linking bridge (31), the waist leans on (33) to set up in back support (32), headrest (34) set up the top at back support (32), cushion (38) are installed at back support (32) towards seat support (2) one side on the surface.

4. An office chair as claimed in claim 1, wherein: chair foot (1) includes universal wheel carrier (11), pneumatic rod (12) and connection structure (13), be equipped with a plurality of universal wheels on universal wheel carrier (11), the middle part of universal wheel carrier (11) is equipped with installation sleeve (111), the bottom of pneumatic rod (12) is fixed in installation sleeve (111), connection structure (13) are installed on pneumatic rod (12).

5. An office chair as claimed in claim 4, wherein: connection structure (13) are including adjusting pole (131), cushion connecting seat (132) and back connecting piece (133), the bottom and the top of atmospheric pressure pole (12) of cushion connecting seat (132) are connected, adjust pole (131) and pass cushion connecting seat (132) and connect the top at atmospheric pressure pole (12), back connecting piece (133) are connected at cushion connecting seat (132) rear, back connecting piece (133) are connected with linking bridge (31).

6. An office chair as claimed in claim 5, wherein: seat support (2) are including cushion body (21) and cushion bottom plate (22), cushion bottom plate (22) bottom is equipped with cushion shift groove (221), cushion shift groove (221) rear is equipped with the opening, cushion connecting seat (132) swing joint is in cushion shift groove (221), cushion connecting seat (132) left and right sides is by being equipped with a plurality of cushion screens (134) after going to, cushion bottom plate (22) are provided with screens mounting (222), cushion bottom plate (22) are provided with screens groove (223), screens groove (223) and cushion shift groove (221) intercommunication, screens mounting (222) are passed screens groove (223) and are connected with cushion connecting seat (132), the fixture block of screens mounting (222) with at cushion screens (134) clearance fit.

7. An office chair as claimed in claim 6, wherein: handrail (4) include cushion connecting piece (41), handrail support (42) and handrail backing plate (43), the both sides bottom at cushion bottom plate (22) is installed to the one end of cushion connecting piece (41), the other end and the handrail support (42) of cushion connecting piece (41) are connected, the top at handrail support (42) is installed to handrail backing plate (43).