CN216534581U

CN216534581U - Office chair with adjustable backrest angle

Info

Publication number: CN216534581U
Application number: CN202123165907.8U
Authority: CN
Inventors: 欧阳伟萍
Original assignee: Guangdong Haojiayuan Office Furniture Co ltd
Current assignee: Guangdong Haojiayuan Office Furniture Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-17
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses an office chair capable of adjusting the angle of a backrest, which comprises a seat plate and a backrest adjusting unit; the side surface of the seat plate is rotatably connected with a rotating shaft, the rotating shaft is connected with a backup plate, and the backup plate is provided with a handrail unit; the back regulating unit includes hand wheel, connecting axle, fixed plate, mounting panel, initiative bevel gear, driven bevel gear, rotation screw rod, sleeve, limiting plate, connecting plate and U type seat, mounting panel and fixed plate all set up the lower surface at the seat, are provided with the installation cavity in the mounting panel, and mounting panel and fixed plate rotate respectively and connect the connecting axle, the one end of connecting axle is connected with the hand wheel, and the other end of connecting axle is connected with initiative bevel gear, rotate the screw rod and rotate and connect in the mounting panel, this office chair can effectively adjust the angle of back, improves the security of using, and can follow the adjustment to the angle of handrail, improves user's sense organ experience.

Description

Office chair with adjustable backrest angle

Technical Field

The utility model relates to the technical field of office chairs, in particular to an office chair with an adjustable backrest angle.

Background

Common office chairs are mostly of fixed structures, and the office people are brainworkers, so that the common office chairs are more in thinking, high in working pressure, easy to feel fatigue, limited in noon break time, cannot have a proper rest, are not beneficial to physical and mental health of workers after long-term sitting, and are inconvenient to use due to poor adjustability of the existing office chairs;

an office chair capable of heating and adjusting the angle of a backrest, disclosed in the prior art with the patent publication number of CN212661461U, comprises a seat plate, a backrest and a graphene plate; a seat plate: the middle part of the upper surface is provided with a groove, the left side and the right side of the seat board are provided with handrails, the middle part of the lower surface of the seat board is provided with a hydraulic telescopic column, the lower end of the hydraulic telescopic column is rotatably connected with a base, the lower surface end part of a side arm of the base is provided with a universal wheel, the upper end of the hydraulic telescopic column is provided with an adjusting rod, and the upper end inside the groove formed in the upper surface of the seat board is provided with fixing rods in a linear array manner;

when the adjustable backrest angle adjusting device is used, the angle of the backrest cannot be effectively adjusted, certain dangerousness exists during use, the angle of an office chair cannot be adjusted, the experience of a user is reduced, and therefore the adjustable backrest angle adjusting office chair is provided.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, and provide an office chair capable of adjusting the angle of a backrest, which can effectively adjust the angle of the backrest, improve the use safety, adjust the angle of a handrail along with the angle of the handrail, improve the sensory experience of a user, and effectively solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: an office chair capable of adjusting the angle of a backrest comprises a seat plate and a backrest adjusting unit;

a seat plate: the side surface of the handrail is rotatably connected with a rotating shaft, the rotating shaft is connected with a backup plate, and the backup plate is provided with a handrail unit;

a backrest adjusting unit: comprises a hand wheel, a connecting shaft, a fixing plate, a mounting plate, a driving bevel gear, a driven bevel gear, a rotating screw, a sleeve, a limiting plate, a connecting plate and a U-shaped seat, the mounting plate and the fixed plate are both arranged on the lower surface of the seat plate, a mounting cavity is arranged in the mounting plate, the mounting plate and the fixed plate are respectively and rotatably connected with the connecting shaft, one end of the connecting shaft is connected with a hand wheel, the other end of the connecting shaft is connected with a driving bevel gear, the rotating screw is rotationally connected in the mounting plate, one end of the rotating screw is connected with a driven bevel gear, the driven bevel gear is engaged with the driving bevel gear, the other end of the rotating screw is in threaded connection with the sleeve, the telescopic both sides are provided with the limiting plate, sleeve and limiting plate sliding connection mounting panel, and the muffjoint has the connecting plate, connecting plate swing joint U type seat, U type seat sets up on the backup plate.

During the use, according to user's custom, rotate the hand wheel, the hand wheel drives the connecting axle and rotates, and the connecting axle drives the drive bevel gear and rotates, and drive bevel gear drives driven bevel gear and rotates, and driven bevel gear drives and rotates the screw rod, rotates the screw rod and drives the sleeve and remove, and the sleeve promotes the connecting plate and removes, and the connecting plate promotes U type seat and removes, and U type seat drives the backup plate and removes, and the backup plate rotates through the pivot to the angle between adjustment backup plate and the seat, the angle of view of handrail unit is adjusted according to user's custom again.

Further, the handrail unit comprises two connecting columns, a handrail, a spring, a top rod, a second connecting column, a push plate and a clamping plate, wherein the two connecting columns are respectively arranged at two sides of the backup plate, the connecting columns are rotatably connected with the handrail, the handrail is hollow inside, the part of the connecting columns, which is positioned in the handrail, is connected with the clamping plate, a clamping groove is formed in the clamping plate, the top rod is clamped in the clamping groove, the top rod is in sliding connection with the handrail, the second connecting column is arranged on the top rod, the second connecting column is connected with the push plate, the second connecting column and the push plate are in sliding connection with the handrail, the top rod and the handrail are respectively connected at two ends of the spring, when a user needs to adjust the angle of the handrail, the push plate is pushed, the push plate drives the top rod to move through the second connecting column, the top rod is separated from the clamping plate and compresses the spring, the handrail is raised or lowered, so that the handrail is in a proper position, the push plate is loosened, and the ejector rod is clamped into the clamping plate under the action of the elastic force of the spring to fix the handrail.

Further, still include the flexible post of hydraulic pressure and place the board, the flexible post of hydraulic pressure totally four and set up respectively in the lower surface four corners of seat, and the flexible post of hydraulic pressure is connected with places the board, improves the stability of the flexible post of hydraulic pressure through placing the board, adjusts the height of office chair through the flexible post of hydraulic pressure.

Further, still include mount pad and gyro wheel, the mount pad is totally four and rotates respectively to be connected in the lower surface four corners of placing the board, rotates on the mount pad and is connected with the gyro wheel, removes office chair through mount pad and gyro wheel person of facilitating the use.

Further, still include the cushion, the cushion sets up the upper surface at the seat, is provided with the bleeder vent on the cushion, travelling comfort and gas permeability when improving the user through the cushion and using.

Further, still include the cushion, the cushion sets up on the backup plate, and the cushion passes through the viscose bonding on the backup plate, through the cushion travelling comfort when improving the backup plate and leaning on.

Compared with the prior art, the utility model has the beneficial effects that: has the following advantages:

1. the hand wheel drives the driving bevel gear to rotate through the connecting screw rod, the driving bevel gear drives the driven bevel gear to rotate, the driven bevel gear drives the rotating screw rod to rotate, so that the sleeve drives the backup plate to rotate, the angle of the backup plate is adjusted, the convenience of adjusting the angle of the backup plate is improved, the backup plate rotating shaft and the sleeve are connected to the seat plate, and the use safety and the stability of the backup plate are improved;

2. promote the push pedal, the push pedal drives the ejector pin through the second spliced pole and removes, and the ejector pin breaks away from the cardboard, rotates the handrail and adjusts suitable angle, loosens the push pedal, and under the effect of spring, during the ejector pin joint advances the cardboard, fixes the handrail, accomplishes the angular adjustment to the handrail to experience for the more comfortable use of user.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of a partial cross-sectional structure of the present invention;

FIG. 3 is a side view partially cross-sectional structure of the present invention.

In the figure: the seat cushion comprises a seat cushion 1, a backrest adjusting unit 2, a hand wheel 21, a connecting shaft 22, a fixed plate 23, a mounting plate 24, a driving bevel gear 25, a driven bevel gear 26, a rotating screw 27, a sleeve 28, a limiting plate 29, a connecting plate 210, a U-shaped seat 211, a handrail unit 3, a connecting column 31, a handrail 32, a spring 33, a push rod 34, a second connecting column 35, a push plate 36, a clamping plate 37, a rotating shaft 4, a backup plate 5, a hydraulic telescopic column 6, a placing plate 7, a mounting seat 8, a roller 9, a seat cushion 10 and a back cushion 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present embodiment provides a technical solution: an office chair capable of adjusting the angle of a backrest comprises a seat plate 1 and a backrest adjusting unit 2;

seat board 1: the side surface is rotatably connected with a rotating shaft 4, the rotating shaft 4 is connected with a backup plate 5, and the backup plate 5 is provided with a handrail unit 3;

the backrest adjusting unit 2: comprises a hand wheel 21, a connecting shaft 22, a fixing plate 23, a mounting plate 24, a driving bevel gear 25, a driven bevel gear 26, a rotating screw 27, a sleeve 28, a limit plate 29, a connecting plate 210 and a U-shaped seat 211, wherein the mounting plate 24 and the fixing plate 23 are both arranged on the lower surface of the seat plate 1, a mounting cavity is arranged in the mounting plate 24, the mounting plate 24 and the fixing plate 23 are respectively connected with the connecting shaft 22 in a rotating way, one end of the connecting shaft 22 is connected with the hand wheel 21, the other end of the connecting shaft 22 is connected with the driving bevel gear 25, the rotating screw 27 is rotatably connected in the mounting plate 24, one end of the rotating screw 27 is connected with the driven bevel gear 26, the driven bevel gear 26 is meshed with the driving bevel gear 25, the other end of the rotating screw 27 is connected with the sleeve 28 in a threaded way, the limit plates 29 are arranged on two sides of the sleeve 28, the sleeve 28 and the limit plate 29 are slidably connected with the mounting plate 24, the sleeve 28 is connected with the connecting plate 210, the connecting plate 210 is movably connected with the U-shaped seat 211, the U-shaped seat 211 is arranged on the backup plate 5.

During the use, according to user's custom, rotate hand wheel 21, hand wheel 21 drives connecting axle 22 and rotates, connecting axle 22 drives drive bevel gear 25 and rotates, drive bevel gear 25 drives driven bevel gear 26 and rotates, driven bevel gear 26 drives and rotates screw rod 27 and rotates, it drives sleeve 28 and removes to rotate screw rod 27, sleeve 28 promotes connecting plate 210 and removes, connecting plate 210 promotes U type seat 211 and removes, U type seat 211 drives backup plate 5 and removes, backup plate 5 rotates through pivot 4, thereby adjust the angle between backup plate 5 and the seat 1, again according to user's custom adjustment handrail unit 3's angle of sight.

The armrest unit 3 comprises two connecting posts 31, an armrest 32, a spring 33, a push rod 34, a second connecting post 35, a push plate 36 and a clamping plate 37, wherein the two connecting posts 31 are respectively arranged at two sides of the backup plate 5, the connecting post 31 is rotatably connected with the armrest 32, the armrest 32 is hollow inside, the part of the connecting post 31 located in the armrest 32 is connected with the clamping plate 37, the clamping plate 37 is provided with a clamping groove, the push rod 34 is clamped in the clamping groove, the push rod 34 is slidably connected with the armrest 32, the second connecting post 35 is arranged on the push rod 34, the second connecting post 35 is connected with the push plate 36, the second connecting post 35 and the push plate 36 are slidably connected with the armrest 32, two ends of the spring 33 are respectively connected with the push rod 34 and the armrest 32, when a user needs to adjust the angle of the armrest 32, the push plate 36 is pushed, the push plate 36 drives the push rod 34 to move through the second connecting post 35, the push rod 34 is separated from the clamping plate 37 and compresses the spring 33, the armrest 32 is raised or lowered to place the armrest 32 in the proper position, the push plate 36 is released, and the push rod 34 is clamped into the clamping plate 37 under the elastic force of the spring 33 to fix the armrest 32.

Still include the flexible post of hydraulic pressure 6 and place board 7, the flexible post of hydraulic pressure 6 totally four and set up respectively in the lower surface four corners of seat 1, and the flexible post of hydraulic pressure 6 is connected with places board 7, improves the stability of the flexible post of hydraulic pressure 6 through placing board 7, adjusts the height of office chair through the flexible post of hydraulic pressure 6.

Still include mount pad 8 and gyro wheel 9, mount pad 8 totally four just rotate respectively to connect in the lower surface four corners of placing board 7, rotate on the mount pad 8 and be connected with gyro wheel 9, remove office chair through

mount pad

8 and 9 person of facilitating the use of gyro wheel.

Still include cushion 10, cushion 10 sets up the upper surface at seat 1, is provided with the bleeder vent on the cushion 10, improves travelling comfort and gas permeability when the user uses through cushion 10.

Still include cushion 11, cushion 11 sets up on backup plate 5, and cushion 11 passes through the viscose and bonds on backup plate 5, through cushion 11 travelling comfort when improving backup plate 5 and leaning on.

The working principle of the office chair with the adjustable backrest angle provided by the utility model is as follows: when the backrest cushion is used, a user sits on the seat plate 1, the comfort and the air permeability of the user during use are improved through the seat cushion 10, the hand wheel 21 is rotated, the hand wheel 21 drives the connecting shaft 22 to rotate, the connecting shaft 22 drives the driving bevel gear 25 to rotate, the driving bevel gear 25 drives the driven bevel gear 26 to rotate, the driven bevel gear 26 drives the rotating screw 27 to rotate, the rotating screw 27 drives the sleeve 28 to move, the sleeve 28 pushes the connecting plate 210 to move, the connecting plate 210 pushes the U-shaped seat 211 to move, the U-shaped seat 211 drives the backrest plate 5 to move, the backrest plate 5 rotates through the rotating shaft 4, so that the angle between the backrest plate 5 and the seat plate 1 is adjusted, the comfort of the backrest plate 5 during backrest is improved through the backrest cushion 11, when the angle of the armrest 32 needs to be adjusted by the user, the push plate 36 is pushed, the push plate 36 drives the ejector rod 34 to move through the second connecting column 35, the ejector rod 34 is separated from the clamp plate 37 and compresses the spring 33, raise or reduce handrail 32, make handrail 32 be in suitable position, loosen push pedal 36, under the effect of spring 33 elasticity, during ejector pin 34 joint advances cardboard 37, fix handrail 32, accomplish handrail 32's adjustment, through placing the stability that board 7 improved hydraulic telescoping post 6, adjust the height of office chair through hydraulic telescoping post 6, remove office chair through mount pad 8 and gyro wheel 9 person of facilitating the use.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An office chair of adjustable back angle which characterized in that: comprises a seat plate (1) and a backrest adjusting unit (2);

seat plate (1): a rotating shaft (4) is rotatably connected to the side surface of the handrail, a backup plate (5) is connected to the rotating shaft (4), and a handrail unit (3) is arranged on the backup plate (5);

backrest adjustment unit (2): comprises a hand wheel (21), a connecting shaft (22), a fixing plate (23), a mounting plate (24), a driving bevel gear (25), a driven bevel gear (26), a rotating screw (27), a sleeve (28), a limiting plate (29), a connecting plate (210) and a U-shaped seat (211), wherein the mounting plate (24) and the fixing plate (23) are both arranged on the lower surface of the seat plate (1), a mounting cavity is arranged in the mounting plate (24), the mounting plate (24) and the fixing plate (23) are respectively and rotatably connected with the connecting shaft (22), one end of the connecting shaft (22) is connected with the hand wheel (21), the other end of the connecting shaft (22) is connected with the driving bevel gear (25), the rotating screw (27) is rotatably connected in the mounting plate (24), one end of the rotating screw (27) is connected with the driven bevel gear (26), the driven bevel gear (26) is meshed with the driving bevel gear (25), rotate other end threaded connection sleeve (28) of screw rod (27), the both sides of sleeve (28) are provided with limiting plate (29), sleeve (28) and limiting plate (29) sliding connection mounting panel (24), and sleeve (28) are connected with connecting plate (210), connecting plate (210) swing joint U type seat (211), U type seat (211) set up on backup plate (5).

2. An adjustable back angle office chair as claimed in claim 1, wherein: the armrest unit (3) comprises a connecting column (31), an armrest (32), a spring (33), a top rod (34), a second connecting column (35), a push plate (36) and a clamping plate (37), the two connecting columns (31) are respectively arranged at two sides of the backup plate (5), the connecting columns (31) are rotatably connected with handrails (32), the inside of the handrail (32) is hollow, the part of the connecting column (31) positioned in the handrail (32) is connected with a clamping plate (37), a clamping groove is arranged on the clamping plate (37), a mandril (34) is clamped in the clamping groove, the top rod (34) is connected with the handrail (32) in a sliding way, a second connecting column (35) is arranged on the top rod (34), the second connecting column (35) is connected with a push plate (36), the second connecting column (35) and the push plate (36) are connected with the handrail (32) in a sliding way, two ends of the spring (33) are respectively connected with the mandril (34) and the handrail (32).

3. An adjustable back angle office chair as claimed in claim 1, wherein: the seat is characterized by further comprising hydraulic telescopic columns (6) and a placing plate (7), wherein the hydraulic telescopic columns (6) are four in number and are respectively arranged at four corners of the lower surface of the seat plate (1), and the hydraulic telescopic columns (6) are connected with the placing plate (7).

4. An adjustable back angle office chair as claimed in claim 3, wherein: still include mount pad (8) and gyro wheel (9), mount pad (8) are totally four and rotate respectively and connect in the lower surface four corners of placing board (7), rotate on mount pad (8) and be connected with gyro wheel (9).

5. An adjustable back angle office chair as claimed in claim 1, wherein: the novel seat cushion is characterized by further comprising a seat cushion (10), wherein the seat cushion (10) is arranged on the upper surface of the seat plate (1), and air holes are formed in the seat cushion (10).

6. An adjustable back angle office chair as claimed in claim 1, wherein: the backrest is characterized by further comprising a back cushion (11), wherein the back cushion (11) is arranged on the backrest plate (5), and the back cushion (11) is adhered to the backrest plate (5) through adhesive.