CN221204699U

CN221204699U - Office chair with waist support

Info

Publication number: CN221204699U
Application number: CN202323388331.0U
Authority: CN
Inventors: 朱晓雄; 李媛
Original assignee: Anji Aojia Household Products Co ltd
Current assignee: Anji Aojia Household Products Co ltd
Priority date: 2023-12-11
Filing date: 2023-12-11
Publication date: 2024-06-25
Anticipated expiration: 2033-12-11

Abstract

The utility model relates to the technical field of office chairs, in particular to an office chair with a waist support, which comprises a bottom plate, wherein a hydraulic column is arranged on the bottom plate, a chair seat is fixedly connected to the telescopic end of the hydraulic column, armrests are arranged on two sides of the chair seat, a chair back is arranged on the chair seat, a waist support body is arranged on one side of the chair back, which is close to the chair seat, a mounting seat is connected to the waist support body, a moving assembly is arranged in the mounting seat, connecting blocks are fixedly connected to two sides of the mounting seat, movable grooves are formed in two sides of the chair back, a threaded rod II is rotationally connected to the two sides of the chair back, a sliding opening is formed in the position of the chair back, which corresponds to the connecting blocks, a rotating block is connected to the threaded rod II, a top of the chair back is fixedly connected to a top seat, and a driving assembly is arranged in the top seat.

Description

Office chair with waist support

Technical Field

The utility model relates to the technical field of office chairs, in particular to an office chair with a waist support.

Background

Office chairs are various chairs equipped for convenience in daily work and social activities, office workers need to sit indoors for office work, but can cause waist soreness after long-term sitting, and occupational diseases are easily caused.

Patent document CN214711600U discloses an office chair waist support with self-adaptive height, "including setting up in the waist support body of back of the chair one side, be provided with the backup pad in the package cloth layer including the back of the chair, the backup pad both sides are provided with the nut with the backup pad rigid coupling, with nut threaded connection's screw rod, respectively with sprocket one and sprocket two of both sides screw rod rigid coupling, simultaneously with sprocket one and sprocket two meshing driven chain one, drive screw pivoted drive assembly, offered on the back of the chair and supplied the waist to support the slide that the body reciprocated, be provided with coupling assembling between backup pad and the waist support body. According to the utility model, the waist support body can be adjusted up and down by adopting the screw rod and the nut, the handle is manually driven to rotate, and the handle drives the screw rod to rotate through the meshing transmission of the first gear and the second gear, so that the nut is driven to move up and down, the height of the waist support body is adjusted according to different height requirements of a user, and the comfort level of an office chair is improved. When the office chair is used, the height of the waist support is required to be manually adjusted, the operation is too time-consuming and labor-consuming, when a user sits on the chair, the user cannot quickly adjust the waist support height which meets the requirement of the user, the experience of the user is reduced, the waist support cannot move back and forth in the horizontal direction, the supporting effect of the user in different sitting postures cannot be met, and therefore, the office chair with the waist support is provided for solving the problems.

Disclosure of utility model

The utility model aims to provide an office chair with a waist support, which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an office chair with waist support, includes the bottom plate, install the diagonal brace on the bottom plate, install the universal wheel on the diagonal brace, install the hydraulic ram on the bottom plate, the flexible end fixedly connected with seat support of hydraulic ram, the handrail is installed to the seat support both sides, be provided with the back of the chair on the seat support, one side that the back of the chair is close to the seat support is provided with the waist support body, be connected with the mount pad on the waist support body, be provided with the removal subassembly in the mount pad, the equal fixedly connected with connecting block in mount pad both sides, the movable groove has all been seted up to the back of the chair both sides, the movable groove rotation is connected with threaded rod two, the back of the chair has been seted up the slip mouth corresponding to the position department of connecting block, threaded connection has rotatory piece on the threaded rod two, rotatory piece passes the slip mouth and connects on the connecting block, back of the chair top fixedly connected with footstock, be provided with drive assembly in the footstock.

Preferably, the waist support body is arc-shaped.

Preferably, the rotating block and the connecting block are fixedly connected through bolts.

Preferably, the movable assembly comprises a first driving motor, a first threaded rod, rotating blocks and a supporting rod, wherein the first driving motor is arranged in the mounting seat, one end of the first threaded rod is fixedly connected with the output end of the first driving motor, the other end of the first threaded rod is rotationally connected to the inner wall of the mounting seat, a sliding groove is formed in the mounting seat, the first threaded rod is connected with the two rotating blocks in a threaded manner, two rotating blocks are respectively connected with one end of the supporting rod in a movable manner, and the other end of the supporting rod is movably connected to the waist support body.

Preferably, the rotating block is abutted to the opening of the chute, and the rotating block is connected to the chute in a sliding manner.

Preferably, the driving assembly comprises a driving motor II, a rotating shaft I, a rotating shaft II and a synchronous belt, the tops of the threaded rods II are respectively fixedly connected with the rotating shaft I and the rotating shaft II, the driving motor II is arranged in the footstock, the output end of the driving motor II is fixedly connected to the rotating shaft I, one end, far away from the threaded rod II, of the rotating shaft II is rotationally connected to the inner wall of the footstock, and the synchronous belt is connected between the rotating shaft I and the rotating shaft II in a transmission mode.

Preferably, the waist support body is provided with a plurality of elastic protruding blocks, and a plurality of elastic protruding blocks are semicircular.

Compared with the prior art, the utility model has the beneficial effects that: the movable assembly can adjust the waist support body to move back and forth, so that gaps are avoided between a user and the waist support body, the user can support the waist when sitting at different positions of the seat, and the practicability is high; the setting of drive assembly need not the manual regulation of user, and the user can sit on the seat support and experience waist and hold in the palm the impression that the body is in different height to adjust waist and hold in the palm the body to the most suitable height, improve office chair's comfort level, labour saving and time saving is convenient for operate.

Drawings

FIG. 1 is a schematic view of an office chair according to the present utility model;

FIG. 2 is a cross-sectional view of the seat back and top seat;

FIG. 3 is an enlarged view of FIG. 2 at A;

fig. 4 is a schematic diagram of the connection of the mounting base and the lumbar support body;

Fig. 5 is a cross-sectional view of the mount.

In the figure: 1. a bottom plate; 2. a diagonal brace; 3. a universal wheel; 4. a hydraulic column; 5. a seat; 6. an armrest; 7. a chair back; 8. a waist support body; 9. a mounting base; 10. a connecting block; 11. a movable groove; 12. a second threaded rod; 13. a sliding port; 14. a rotating block; 15. a top base; 16. driving a first motor; 17. a first threaded rod; 18. a rotating block; 19. a support rod; 20. a chute; 21. a second driving motor; 22. a first rotating shaft; 23. a second rotating shaft; 24. a synchronous belt; 25. elastic protruding block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: an office chair with a waist support comprises a bottom plate 1, wherein an inclined supporting rod 2 is arranged on the bottom plate 1, universal wheels 3 are arranged on the inclined supporting rod 2, a hydraulic column 4 is arranged on the bottom plate 1, the telescopic ends of the hydraulic column 4 are fixedly connected with a chair seat 5, armrests 6 are arranged on two sides of the chair seat 5, a chair back 7 is arranged on the chair seat 5, a waist support body 8 is arranged on one side of the chair back 7, which is close to the chair seat 5, a mounting seat 9 is connected on the waist support body 8, a movable assembly is arranged in the mounting seat 9, connecting blocks 10 are fixedly connected on two sides of the mounting seat 9, movable grooves 11 are respectively arranged on two sides of the chair back 7, threaded rods 12 are rotationally connected with the movable grooves 11, sliding openings 13 are arranged at positions of the chair back 7, which correspond to the connecting blocks 10, rotary blocks 14 are connected on the threaded rods 12 through the sliding openings 13 and are connected to the connecting blocks 10, a top seat 15 is fixedly connected to the top of the chair back 7, a driving assembly is arranged in the top seat 15, the height of the chair seat 5 can be adjusted by the arrangement of the hydraulic column 4, the whole office chair can be moved to any position by the hand handrail 6 through the universal wheels 3 at the bottom of the diagonal brace 2, the waist support body 8 can be moved back and forth by the arrangement of the moving component, the gap between a user and the waist support body 8 is avoided, the user can support the waist when sitting at different positions of the chair seat 5, the practicability is strong, the arrangement of the driving component can drive the threaded rod II 12 in the movable groove 11 to rotate, the threaded rod II 12 rotates to drive the rotating block 14 to move up and down at the sliding port 13, the connecting blocks 10 at the two sides of the mounting seat 9 are driven to move up and down, the waist support body 8 connected on the mounting seat 9 is driven to move up and down, the height of the waist support body 8 is adjusted to be favorable for supporting users with different heights without manual adjustment of the user, the user can sit on seat support 5 experience waist support body 8 is in the impression of different height to adjust waist support body 8 to the most suitable height, improve office chair's comfort level, labour saving and time saving, the operation of being convenient for, when using, driving motor one 16 and driving motor two 21 all control through the intercommunication power and the control switch that set up on handrail 6, relate to circuit and module and are prior art, and the technical staff can realize completely, need not to speak in a long way.

Further, the waist support body 8 is arc-shaped, so that the comfort of the waist support of a user is improved.

Further, the rotating block 14 and the connecting block 10 are fixedly connected through bolts, so that the installation seat 9 can be conveniently installed and detached on the chair back 7, and the waist support body 8 can be conveniently overhauled, maintained or replaced.

Further, the movable assembly comprises a first driving motor 16, a first threaded rod 17, rotating blocks 18 and a supporting rod 19, the first driving motor 16 is arranged in the mounting seat 9, one end of the first threaded rod 17 is fixedly connected to the output end of the first driving motor 16, the other end of the first threaded rod 17 is rotationally connected to the inner wall of the mounting seat 9, a sliding groove 20 is formed in the mounting seat 9, two rotating blocks 18 are in threaded connection with the first threaded rod 17, one end of the supporting rod 19 is movably connected to the two rotating blocks 18, the other end of the supporting rod 19 is movably connected to the lumbar support body 8, the first driving motor 16 is started to drive the first threaded rod 17 to rotate, the first threaded rod 17 rotates to drive the two rotating blocks 18 with opposite threads to slide at the sliding groove 20, when the two rotating blocks 18 are close to or far away from each other, the supporting rod 19 and the mounting seat 9 change the angle, the supporting rod 19 rotates to adjust the distance between the lumbar support body 8 and the mounting seat 9, the lumbar support body 8 can move back and forth above the seat 5, gaps between a user and the lumbar support body 8 are avoided, and the lumbar support body 8 can provide a strong supporting effect when the user sits at different positions.

Further, the rotating block 18 is abutted to the opening of the sliding groove 20, and the rotating block 18 is slidably connected to the sliding groove 20, so that the rotating block 18 can stably slide on the sliding groove 20, and further the stability of the front-back movement of the waist support body 8 is improved.

Further, the drive assembly includes driving motor two 21, pivot one 22, pivot two 23 and hold-in range 24, two the top of threaded rod two 12 is fixedly connected with pivot one 22 and pivot two 23 respectively, be provided with driving motor two 21 in the footstock 15, driving motor two 21's output fixed connection is on pivot one 22, the one end rotation that threaded rod two 12 was kept away from to pivot two 23 is connected at the footstock 15 inner wall, the transmission is connected with hold-in range 24 between pivot one 22 and the pivot two 23, and driving motor two 21 starts to drive pivot one 22 rotation, and pivot one 22 rotation drives the drive of hold-in range 24, and the drive of hold-in range 24 drives pivot two 23 rotation, and pivot two 23 rotation drives threaded rod two 12 and rotates in movable groove 11, and threaded rod two 12 rotation drives rotatory piece 14 and reciprocate in sliding port 13 department, and then drives connecting block 10, mount pad 9 and waist support body 8 and reciprocate, adjusts the waist and holds in the palm the height of body 8 in order to support the user of different heights, need not the manual regulation of user, and can be in the waist support body 5 and be at the different height of the rest 8, thereby the comfortable height of operation is convenient for improving the user and is convenient for adjust the comfort height of the chair.

Further, the waist support body 8 is provided with a plurality of elastic protruding blocks 25, the elastic protruding blocks 25 are semicircular, and the elastic protruding blocks 25 can massage the waist of a user in the process of moving the waist support body 8 back and forth and up and down, so that the fatigue of the waist of the user is reduced.

Working principle: during the use, start driving motor one 16 drive threaded rod one 17 rotate, threaded rod one 17 rotates and drives two screw threads to revolve to opposite turning block 18 and slide in spout 20 department, when two turning blocks 18 are close to or keep away from mutually, the bracing piece 19 changes with the angle between the mount pad 9, the distance between support bar 19 rotation regulation waist support body 8 and the mount pad 9, waist support body 8 can reciprocate above seat 5, avoid the user and waist support body 8 between the space, so that the user can both provide the supporting role to the waist when sitting in seat 5 different positions, the practicality is strong, driving motor two 21 starts and drives the rotation of pivot one 22, the rotation of pivot one 22 drives the hold-in range 24 transmission, the rotation of synchronous belt 24 drives the rotation of pivot two 23, the rotation of pivot two 23 drives threaded rod two 12 and rotates in movable groove 11, two 12 rotation drive turning block 14 and reciprocate in sliding port 13 department, and then drive connecting block 10, mount pad 9 and waist support body 8 reciprocate, adjust the waist support body 8's height so that support body 8 is in order to support the user to the waist, need not to support the user, the user can adjust the waist support body 8 at the height at the most, the height of the user is convenient for the height is adjusted to the height is at the seat 8, the user is at the height is convenient for the height is adjusted to the height is at the most comfortable, the height is adjusted to the height is convenient for the user is at the height is adjusted to the height is at the height is convenient to the chair 8.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Office chair with waist support, comprising a bottom plate (1), and being characterized in that: install diagonal brace (2) on bottom plate (1), install universal wheel (3) on diagonal brace (2), install hydraulic ram (4) on bottom plate (1), flexible end fixedly connected with seat support (5) of hydraulic ram (4), handrail (6) are installed to seat support (5) both sides, be provided with back of the chair (7) on seat support (5), one side that back of the chair (7) is close to seat support (5) is provided with waist support body (8), be connected with mount pad (9) on waist support body (8), be provided with movable assembly in mount pad (9), all fixedly connected with connecting block (10) in mount pad (9) both sides, movable groove (11) have all been seted up in back of the chair (7) both sides, movable groove (11) are connected with threaded rod (12) in the rotation, seat support (7) correspond the position department of connecting block (10) and have been seted up sliding opening (13), threaded connection has rotary block (14) on threaded rod (12) are close to seat support body (8), be provided with movable assembly (15) in the top of the seat support (9) and drive top of the seat support (15).

2. An office chair with lumbar support according to claim 1, wherein: the waist support body (8) is arc-shaped.

3. An office chair with lumbar support according to claim 1, wherein: the rotating block (14) is fixedly connected with the connecting block (10) through bolts.

4. An office chair with lumbar support according to claim 1, wherein: the movable assembly comprises a first driving motor (16), a first threaded rod (17), rotating blocks (18) and a supporting rod (19), wherein the first driving motor (16) is arranged in the mounting seat (9), one end of the first threaded rod (17) is fixedly connected with the output end of the first driving motor (16), the other end of the first threaded rod (17) is rotatably connected to the inner wall of the mounting seat (9), a sliding groove (20) is formed in the mounting seat (9), two rotating blocks (18) are connected to the first threaded rod (17) in a threaded mode, one end of each supporting rod (19) is movably connected to the corresponding two rotating blocks (18), and the other end of each supporting rod (19) is movably connected to the waist support body (8).

5. An office chair with lumbar support according to claim 4, wherein: the rotating block (18) is abutted to the opening of the sliding groove (20), and the rotating block (18) is connected to the sliding groove (20) in a sliding mode.

6. An office chair with lumbar support according to claim 1, wherein: the driving assembly comprises a driving motor II (21), a rotating shaft I (22), a rotating shaft II (23) and a synchronous belt (24), wherein the tops of the threaded rods II (12) are fixedly connected with the rotating shaft I (22) and the rotating shaft II (23) respectively, the driving motor II (21) is arranged in the footstock (15), the output end of the driving motor II (21) is fixedly connected onto the rotating shaft I (22), one end, far away from the threaded rods II (12), of the rotating shaft II (23) is rotationally connected onto the inner wall of the footstock (15), and the synchronous belt (24) is connected between the rotating shaft I (22) and the rotating shaft II (23) in a transmission manner.

7. An office chair with lumbar support according to claim 1, wherein: the waist support is characterized in that a plurality of elastic protruding blocks (25) are arranged on the waist support body (8), and the elastic protruding blocks (25) are semicircular.