CN216454165U

CN216454165U - Liftable office chair

Info

Publication number: CN216454165U
Application number: CN202123010026.9U
Authority: CN
Inventors: 刘毅
Original assignee: Sichuan Yongheng Industrial Co ltd
Current assignee: Sichuan Yongheng Industrial Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-05-10
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a liftable office chair, which comprises a base, wherein a first connecting rod, a second connecting rod and a third connecting rod are arranged in the base in an equidistant surrounding manner, the upper ends of the first connecting rod, the second connecting rod and the third connecting rod are all sleeved with a first rolling bearing, the first rolling bearing is all arranged on the second connecting plate, the second connecting plate is fixedly arranged in the base, the lower ends of the first connecting rod, the second connecting rod and the third connecting rod are all sleeved with a second rolling bearing, the second rolling bearings are all arranged on the bottom side in the base, the top ends of the first connecting rod, the second connecting rod and the third connecting rod all penetrate through the second connecting plate and are integrally formed with screw rods, the screw rods are provided with three groups, and sleeves are all in threaded connection on the screw rods, the utility model can ensure that the chair can not cause the slide rod due to long-time pressing down without influencing the lifting of the chair, the lifting function is more durable.

Description

Liftable office chair

Technical Field

The utility model relates to an official working seat field, in particular to official working seat of liftable.

Background

Office chairs refer to chairs used by general office workers, office chair series is diversified according to requirements of different industries, office chairs can be divided into plate-type office chairs, steel office chairs, metal office chairs, soft office chairs and the like from materials, and office chairs are usually manufactured into chairs with lifting functions in order to meet the use requirements of different workers.

The existing office chair mostly adopts the air rod to lift, and the air rod sliding rod is easy to damage due to long-time sitting and pressing, so that the lifting function can not be damaged, the chair can not be supported, and the service life is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a liftable office chair, the controller controls the motor to rotate in the forward direction to drive the first gear to rotate, the first gear drives the second gear, the third gear and the fourth gear to rotate, thereby driving the first connecting rod, the second connecting rod and the third connecting rod to rotate, then driving the screw to rotate, the sleeve is gradually separated from the screw along with the rotation of the screw through the internal thread which is arranged in the sleeve and is opposite to the screw thread, the chair is driven to move upwards through the first connecting plate to realize the lifting of the chair, otherwise, the chair is descended, when the chair is ascended to a certain degree, the limit ring can prop against the top plate in the base to prevent the sleeve from being completely separated from the screw, so as to solve the problems that most of the prior office chairs proposed in the background technology adopt the air rod to ascend and descend, the long-time sitting pressure easily causes the air rod slide rod, the lifting function is damaged, the seat can not be supported, and the service life is low.

In order to achieve the above object, the utility model provides a following technical scheme: a liftable office chair comprises a base, wherein a first connecting rod, a second connecting rod and a third connecting rod are arranged in the base in an equidistant mode in a surrounding mode, first rolling bearings are sleeved at the upper ends of the first connecting rod, the second connecting rod and the third connecting rod, the first rolling bearings are all installed on a second connecting plate, the second connecting plate is fixedly installed in the base, second rolling bearings are sleeved at the lower ends of the first connecting rod, the second connecting rod and the third connecting rod, the second rolling bearings are all installed on the bottom side in the base, the top ends of the first connecting rod, the second connecting rod and the third connecting rod penetrate through the second connecting plate and are integrally formed with screw rods, the screw rods are provided with three groups, sleeves are all in threaded connection with the screw rods, and limiting rings are welded at the bottoms of the sleeves, the top end of the sleeve penetrates through the top of the base and is fixed to the bottom of a first connecting plate, and the first connecting plate is fixedly connected with the bottom of the seat.

Preferably, a second gear, a third gear and a fourth gear are respectively sleeved on the first connecting rod, the second connecting rod and the third connecting rod, the second gear, the third gear and the fourth gear are all meshed with the first gear, the first gear is connected with the output end of the motor, and the first gear is fixedly installed in a groove formed in the bottom side inside the motor.

Preferably, the lower extreme welding of base outside has the supporting leg, the supporting leg equidistance is provided with the multiunit.

Preferably, the supporting legs are far away from the bottom of one end of the base is provided with universal wheels, and the universal wheels are provided with multiple groups.

Preferably, armrests are fixedly mounted on two sides of the outside of the seat, two armrests are arranged, and a controller is mounted at the lower end of one group of armrests.

Preferably, a backrest is fixedly installed at the rear end of the seat.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a head rod, second connecting rod, third connecting rod, first antifriction bearing, second antifriction bearing, screw rod, spacing ring, sleeve, first connecting plate and the seat that set up can make the seat can not lead to the slide bar because of long-time pushing down, does not influence the lift of seat, makes raising and lowering functions more durable to can utilize three screw rods of group to support, further improve the bearing capacity of seat, prolong the service life of seat.

2. Through motor, first gear, second gear, third gear, fourth gear, handrail, controller, back, supporting leg, universal wheel and the second connecting plate that sets up, can be through the lift of controller control seat, convenient to use, the universal wheel can make the convenient removal of seat, does benefit to the official working and uses more.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a structural diagram of the base of the present invention.

Fig. 3 is a structural diagram of the first gear of the present invention.

In the figure: 1. the base, 2, the motor, 3, first gear, 4, the second gear, 5, the third gear, 6, the fourth gear, 7, the head rod, 8, the second connecting rod, 9, the third connecting rod, 10, first antifriction bearing, 11, the second antifriction bearing, 12, the screw rod, 13, the spacing ring, 14, the sleeve, 15, first connecting plate, 16, the seat, 17, the handrail, 18, the controller, 19, the back, 20, the supporting leg, 21, the universal wheel, 22, the second connecting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a liftable office chair as shown in figures 1-3, which comprises a base 1, wherein a first connecting rod 7, a second connecting rod 8 and a third connecting rod 9 are arranged around the inner part of the base 1 at equal intervals, first rolling bearings 10 are sleeved on the upper ends of the first connecting rod 7, the second connecting rod 8 and the third connecting rod 9, the first rolling bearings 10 are all arranged on a second connecting plate 22, the second connecting plate 22 is fixedly arranged in the base 1, second rolling bearings 11 are sleeved on the lower ends of the first connecting rod 7, the second connecting rod 8 and the third connecting rod 9, the second rolling bearings 11 are all arranged on the bottom side of the inner part of the base 1, the top ends of the first connecting rod 7, the second connecting rod 8 and the third connecting rod 9 all penetrate through the second connecting plate 22 and are integrally formed with screw rods 12, the screw rods 12 are provided with three groups, a sleeve 14 is connected on the screw rods 12 through screw threads, the bottom of the sleeve 14 is welded with a limit ring 13, the top end of the sleeve 14 penetrates through the top of the base 1 and is fixed at the bottom of the first connecting plate 15, the first connecting plate 15 is fixedly connected with the bottom of the seat 16, firstly, the first connecting rod 7, the second connecting rod 8 and the third connecting rod 9 are fixedly installed inside the base 1 by the first rolling bearing 10 and the second rolling bearing 11, so that the first connecting rod 7, the second connecting rod 8 and the third connecting rod 9 cannot move up and down when rotating, the second gear 4, the third gear 5 and the fourth gear 6 are always engaged with the first gear 3, the sleeve 14 is internally provided with an internal thread opposite to the thread of the screw 12, when the first connecting rod 7, the second connecting rod 8 and the third connecting rod 9 rotate forward, the screw 12 is driven to rotate, the sleeve 14 is gradually separated from the screw 12, the seat 16 is driven to move upwards by the first connecting plate 15, the lifting of the seat 16 is realized, otherwise, the seat 16 is lowered, and when the seat 16 is lifted to a certain degree, the limiting ring 13 can prop against the top plate 1 in the base 1 to prevent the sleeve 14 from being completely separated from the screw 12.

In this embodiment, the first connecting rod 7, the second gear 4 has been cup jointed on second connecting rod 8 and the third connecting rod 9 respectively, third gear 5 and fourth gear 6, the second gear 4, third gear 5 and fourth gear 6 all mesh with first gear 3, first gear 3 is connected with the output of motor 2, first gear 3 fixed mounting is in the recess that the inside bottom side of motor 2 was seted up, motor 2 rotates, drive first gear 3 and rotate, first gear 3 drives second gear 4, third gear 5 and fourth gear 6 rotate, thereby drive first connecting rod 7, second connecting rod 8 and third connecting rod 9 rotate, through the positive and negative rotation of motor 2, realize the lift of seat 16.

In this embodiment, the lower extreme welding of base 1 outside has supporting leg 20, and supporting leg 20 equidistance is provided with the multiunit, and supporting leg 20 supports seat 16, makes seat 16 more stable.

In this embodiment, universal wheels 21 are all installed to the bottom of the one end of supporting leg 20 far away from base 1, and the universal wheels 21 are provided with the multiunit, and universal wheels 21 makes seat 16 can remove, makes things convenient for the official working to use.

In this embodiment, armrests 17 are fixedly mounted on two sides of the exterior of the seat 16, two armrests 17 are provided, wherein a controller 18 is mounted at the lower end of one group of armrests 17, the armrests 17 can increase the comfort of the seat 16, and the controller 18 is used for controlling the motor to rotate, so as to realize the lifting of the seat 16.

In the present embodiment, a backrest 19 is fixedly installed at the rear end of the seat 16, and the backrest 19 can be leaned on by office workers, so as to increase the comfort of the seat 16.

This practical theory of operation: the utility model relates to an office chair of liftable, at first 2 forward rotations through 18 control motor of controller, drive first gear 3 and rotate, first gear 3 drives second gear 4, third gear 5 and fourth gear 6 rotate, thereby drive head rod 7, second connecting rod 8 and third connecting rod 9 rotate, then drive screw rod 12 and rotate, through the inside internal thread opposite with screw rod 12 screw thread that sets up of sleeve 14, make sleeve 14 along with the rotation of screw rod 12, break away from on screw rod 12 gradually, drive seat 16 upward movement through first connecting plate 15, realize seat 16's rising, otherwise make seat 16 descend, when rising to the certain degree, spacing ring 13 can withstand the roof of 1 inside of base, prevent that sleeve 14 and screw rod 12 from breaking away from completely.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an office chair of liftable, includes base (1), its characterized in that: a first connecting rod (7), a second connecting rod (8) and a third connecting rod (9) are arranged in the base (1) in an equidistance surrounding mode, first rolling bearings (10) are sleeved at the upper ends of the first connecting rod (7), the second connecting rod (8) and the third connecting rod (9), the first rolling bearings (10) are all installed on a second connecting plate (22), the second connecting plate (22) is fixedly installed in the base (1), second rolling bearings (11) are sleeved at the lower ends of the first connecting rod (7), the second connecting rod (8) and the third connecting rod (9), the second rolling bearings (11) are all installed at the bottom side in the base (1), the top ends of the first connecting rod (7), the second connecting rod (8) and the third connecting rod (9) penetrate through the second connecting plate (22) and are integrally formed with screws (12), the utility model discloses a chair, including base (1), screw rod (12) all have sleeve (14) on all threaded connection, the spacing ring (13) have all been welded to the bottom of sleeve (14), the top of sleeve (14) all runs through the top of base (1) and fix in the bottom of first connecting plate (15), the bottom fixed connection of first connecting plate (15) and seat (16).

2. The liftable office chair of claim 1, wherein: the first connecting rod (7), the second connecting rod (8) and the third connecting rod (9) are respectively sleeved with a second gear (4), a third gear (5) and a fourth gear (6), the second gear (4), the third gear (5) and the fourth gear (6) are all meshed with the first gear (3), the first gear (3) is connected with the output end of the motor (2), and the first gear (3) is fixedly installed in a groove formed in the bottom side inside the motor (2).

3. The liftable office chair of claim 1, wherein: the welding of the outside lower extreme of base (1) has supporting leg (20), supporting leg (20) equidistance is provided with the multiunit.

4. A liftable office chair according to claim 3, wherein: the supporting legs (20) are far away from the bottom of one end of the base (1) and are provided with universal wheels (21), and the universal wheels (21) are provided with multiple groups.

5. The liftable office chair of claim 1, wherein: armrests (17) are fixedly mounted on two sides of the outer portion of the seat (16), two armrests (17) are arranged, and a controller (18) is mounted at the lower end of one group of armrests (17).

6. The liftable office chair of claim 1, wherein: the back (19) is fixedly arranged at the rear end of the seat (16).