CN216875673U

CN216875673U - Chair capable of self-adapting to height

Info

Publication number: CN216875673U
Application number: CN202121836686.XU
Authority: CN
Inventors: 马韶
Original assignee: Shaoxing Yongtong Technology Trade Co ltd
Current assignee: Shaoxing Yongtong Technology Trade Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-07-05
Anticipated expiration: 2031-08-06

Abstract

The utility model discloses a chair with self-adaptive height, which comprises a support and a seat board, wherein the seat board comprises an upper board and a lower board, a coarse adjustment power mechanism is arranged at the inner side of the support, the upper end of the coarse adjustment power mechanism is fixedly connected with the lower end surface of the lower board, a switch group I is arranged at two sides of the lower end of the support, a fine adjustment power mechanism is arranged at the lower end of the upper board, the fine adjustment power mechanism comprises a motor, a pinion, a gearwheel, a threaded rod and a threaded sleeve, the motor is fixed on the lower board, the pinion is fixedly connected on an output shaft of the motor, the gearwheel is rotatably connected with the lower board, the gearwheel is meshed with the pinion, one end of the threaded rod is fixedly connected with the gearwheel, the threaded rod is in threaded fit with the threaded sleeve, and one end of the threaded sleeve is fixed on the lower end surface of the upper board. Thereby making the user more comfortable.

Description

Chair capable of self-adapting to height

Technical Field

The utility model relates to the technical field of seats, in particular to a height-adaptive chair.

Background

During work or learning, a considerable portion of the time is sitting and it is therefore important that the chair be safe and comfortable. However, the chairs of the office or the school are generally of a uniform specification, and the comfort of the chairs of some people with high height or low height cannot be guaranteed.

Existing chairs with adjustable height require disassembly of the chair and subsequent reassembly. In the past, the connection structure was damaged, and the firmness and stability of the chair were reduced. Moreover, the adjustable height of the chair is fixed, and the chair can only reach a certain height, so that people cannot find the most suitable height. In view of the above problems, a solution is proposed as follows.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a chair with self-adaptive height, which has the advantages that the height of the chair can be roughly adjusted and finely adjusted, and the chair can reach the most comfortable height.

The technical purpose of the utility model is realized by the following technical scheme:

a chair capable of adapting to height comprises a support, a seat board and a backrest, wherein the seat board comprises an upper board and a lower board, the seat board is positioned at the upper end of the support, the lower end of the backrest is fixedly connected with one side of the seat board, a coarse adjustment power mechanism is arranged on the inner side of the support, the upper end of the coarse adjustment power mechanism is fixedly connected with the lower end face of the lower board, a first switch group is arranged on two sides of the lower end of the support and electrically connected with the coarse adjustment power mechanism, the first switch group is used for controlling the coarse adjustment power mechanism, a fine adjustment power mechanism is arranged at the lower end of the upper board and comprises a motor, a pinion, a gearwheel, a threaded rod and a threaded sleeve, the motor is fixed on the lower board, the pinion is fixedly connected to an output shaft of the motor, the gearwheel is fixed on the lower board and is rotatably connected with the lower board, and the gearwheel is meshed with the pinion, one end of the threaded rod is fixedly connected with the big gear, one end of the threaded rod far away from the big gear is inserted in the threaded sleeve, and is in threaded fit with the threaded sleeve, one end of the threaded sleeve is fixed on the lower end surface of the upper plate, the fine adjustment power mechanism is used for adjusting the height of the seat plate, the seat board is provided with a switch group II which is electrically connected with the fine adjustment power mechanism, the backrest comprises an upper back frame and a lower back frame, one side of the lower back frame is provided with a chute, the lower end of the upper back frame is positioned in the chute, and is in sliding fit with the sliding groove, the lower end of the upper back frame is provided with an adjusting rope, the upper end of the lower back frame is fixedly provided with a fixed pulley, one end of the adjusting rope upwards passes through the fixed pulley, and is fixedly connected with the bracket downwards, the lower end of the bracket is fixedly provided with an energy control mechanism, and the energy control mechanism is electrically connected with each electrical appliance.

Preferably, the gear wheel, the threaded rod and the threaded sleeve are all provided with a plurality of groups, the gear wheel is meshed with the pinion, the sleeve surrounds the center of gravity of the upper plate, the sleeve is evenly distributed, and the threaded rod and the gear wheel are arranged along the position where the sleeve is located.

Preferably, the lower end faces of the lower plate and the upper plate are fixedly connected with angle irons, fasteners are arranged on the angle irons, and the coarse adjustment power mechanism and the threaded sleeve are connected with the angle irons through the fasteners.

Preferably, a caulking groove is formed in the side wall of one side of the upper plate, the two switch sets are located in the caulking groove, the two switch sets comprise a forward switch and a reverse switch, and the forward switch and the reverse switch respectively control the forward rotation and the reverse rotation of the motor.

Preferably, the coarse adjustment power mechanism comprises a plurality of electric push rods, the electric push rods are distributed around the gravity center of the table, a bottom plate is arranged at the lower end of the support, and the lower ends of the electric push rods are fixedly connected to the bottom plate.

Preferably, the switch group is located on the upper end face of one side of the bottom plate, the switch group comprises a lifting button, a descending button and two pedals, two ends of each pedal are hinged to the support, the two pedals are respectively located at the upper ends of the lifting button and the descending button, and the two pedals are used for pressing the lifting button and the descending button.

Preferably, the bottom plate is provided with an elastic stress block, one end of the elastic stress block is connected with the pedal, and the elastic stress block is used for supporting the pedal so as to keep the pedal at an initial position.

Preferably, a plug pin is inserted into the support, a slot is formed in the pedal, the plug pin is in plug-in fit with the slot, and the plug pin is used for fixing the pedal.

Preferably, the backrest is provided with a waist support, the waist support is in sliding fit with the backrest, the back of the waist support is hinged with a plurality of hook frames, and the hook frames are in clamping fit with the backrest.

Preferably, the energy control mechanism comprises a power supply and a relay, and the power supply is provided with a main switch.

The height adjusting device has the advantages that the plug pins are taken out of the slots, then a user sits on the seat board, the pedal is lifted and pressed down by treading on the pedal, the electric push rods are electrified and started to push up the seat board, so that the seat board moves upwards, the pedal where the descending button is located is treaded, the seat board can move downwards, accordingly, the height of the seat board is roughly adjusted, when the height of the seat board is adjusted to be comfortable, the switch group II can be pressed down, the height of the seat board is finely adjusted, the upper board can be slowly lifted by pressing the forward switch, the upper board can be slowly descended by pressing the reverse switch, and finally the seat board is adjusted to be the most comfortable height.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a longitudinal sectional view of the embodiment;

fig. 3 is a transverse sectional view of the first embodiment for showing a switch block.

Reference numerals: 1. a support; 2. a seat plate; 3. an upper plate; 4. a lower plate; 5. a first switch group; 6. a motor; 7. a pinion gear; 8. a bull gear; 9. a threaded rod; 10. a threaded bushing; 11. a second switch group; 12. angle iron; 13. a forward switch; 14. a reverse switch; 15. an electric push rod; 16. a base plate; 17. a lift button; 18. a down button; 19. a pedal; 20. an elastic stress block; 21. a bolt; 22. a power source; 23. a relay; 24. a master switch; 25. a backrest; 26. an upper back frame; 27. a lower back frame; 28. adjusting the rope; 29. a fixed pulley, 30 and a waist support; 31. and (4) hooking the frame.

Detailed Description

The following description is only a preferred embodiment of the present invention, and the protection scope is not limited to the embodiment, and any technical solution that falls under the idea of the present invention should fall within the protection scope of the present invention. In which like parts are designated by like reference numerals. It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper," and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner," and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1, a chair with adaptive height comprises a bracket 1, a seat plate 2 and a backrest 25, wherein the seat plate 2 comprises an upper plate 3 and a lower plate 4. The seat board 2 is arranged at the upper end of the bracket 1, and the bracket 1 supports the seat board 2. The inner side of the support 1 is provided with a coarse adjustment power mechanism, the coarse adjustment power mechanism comprises a plurality of electric push rods 15, the lower end of the support 1 is provided with a bottom plate 16, and the lower ends of the electric push rods 15 are fixedly connected to the bottom plate 16. The electric push rods 15 are uniformly distributed around the gravity center of the seat plate 2, so that the support of the electric push rods 15 on the seat plate 2 is in a stable state, and the seat plate 2 cannot turn over laterally.

As shown in fig. 1, the lower end of the support 1 is fixedly provided with an energy control mechanism, the energy control mechanism comprises a power supply 22 and a relay 23, the power supply 22 is provided with a main switch 24, and the main switch 24 is turned off to cut off the power supply of the power supply 22 to the electrical appliance, so that the false touch events of the switch group one 5 and the switch group two 11 are prevented. The relay 23 is used to protect the circuit and enable the circuit to be switched on in a number of different states, and the power supply 22 is used to power the electrical consumer.

As shown in fig. 1 to 3, two sides of the lower end of the bracket 1 are provided with a first switch group 5, the first switch group 5 is located on the upper end surface of one side of the bottom plate 16, the first switch group 5 comprises a lifting button 17, a descending button 18 and two pedals 19, two ends of the pedal 19 are hinged to the bracket 1, the two pedals 19 are respectively located on the upper ends of the lifting button 17 and the descending button 18, the pedal 19 above the lifting button 17 is stepped, the lifting button 17 is pressed by the pedals 19, the electric push rod 15 is powered on, and the output shaft of the electric push rod 15 pushes the seat plate 2 upwards to lift the seat plate 2. After stepping on the pedal 19 and pressing the descending button 18, the output shaft of the electric push rod 15 retracts into the electric push rod 15 to realize the descending of the seat plate 2, and the rough adjustment of the height of the seat plate 2 can be realized through the switch group I5.

As shown in fig. 1 and 2, the bottom plate 16 is provided with an elastic force-receiving block 20, the elastic force-receiving block 20 is made of an elastic material capable of recovering deformation, such as sponge, and the like, and when the pedal 19 presses the first switch group 5, the elastic force-receiving block 20 is deformed, and when the treading force disappears, the elastic force-receiving block 20 recovers deformation, so as to jack up the pedal 19, and the pedal 19 can recover to the initial position. And the elastic stress block 20 can relieve the force of the pedal 19 on the switch group I5, so that the switch group I5 is protected from being damaged.

As shown in fig. 1, a plug 21 is inserted into the bracket 1, and a slot is formed in the pedal 19, so that when the height of the seat plate 2 is not required to be adjusted, the plug 21 is inserted into the slot to prevent the pedal 19 from rotating, thereby preventing the switch group one 5 from being touched by mistake.

As shown in fig. 1 and 2, a fine adjustment power mechanism is provided at the lower end of the upper plate 3, and the fine adjustment power mechanism includes a motor 6, a pinion 7, a gearwheel 8, a threaded rod 9 and a threaded sleeve 10. One end of a threaded sleeve 10 is fixed on the lower end face of the upper plate 3, and the upper end of the threaded rod 9 is inserted into the threaded sleeve 10 and is in threaded fit with the threaded sleeve 10. The threads on the threaded sleeve 10 and the threaded rod 9 are both small-pitch threads, so that when the threaded rod 9 rotates, the displacement between the threaded sleeve 10 and the threaded rod is small. The plurality of sleeves are uniformly distributed around the gravity center of the upper plate 3, so that the upper plate 3 can stably move, and the phenomena of side turning and the like can be avoided.

As shown in fig. 1 and 2, the bull gears 8 are fixed on the lower plate 4 and rotatably connected with the lower plate 4, and the pinion gears 7 are engaged with the bull gears 8, so that when the pinion gears 7 rotate, the bull gears 8 are driven to rotate synchronously. One end of the threaded rod 9 is fixedly connected with the circle center of the big gear 8, and the output shaft of the motor 6 is fixedly connected with the circle center of the small gear 7. After the motor 6 starts, can drive pinion 7 and rotate, pinion 7 can drive a plurality of gear wheels 8 synchronous rotation to make a plurality of gear wheels 8 drive a plurality of threaded rods 9 synchronous rotation, a plurality of threaded rods 9 can drive a plurality of threaded sleeves 10 and remove, and a plurality of threaded sleeves 10 can promote upper plate 3 and remove, thereby realize the regulation to the 3 positions of upper plate.

As shown in fig. 1 and 2, a caulking groove is formed in a side wall of one side of the upper plate 3, a second switch group 11 is arranged in the caulking groove, the second switch group 11 comprises a forward switch 13 and a reverse switch 14, and after the forward switch 13 is pressed, the motor 6 is powered on and drives the pinion 7 to rotate in the forward direction, so that the upper plate 3 is lifted. After the reverse switch 14 is pressed, the motor 6 is electrified and drives the pinion 7 to rotate reversely, so that the upper plate 3 is lowered. Because the linear velocity between the small gear 7 and the large gear 8 is the same, and the diameter of the large gear 8 is much larger than that of the small gear 7, the angular velocity of the large gear 8, i.e. the rotating speed, is much smaller than that of the small gear 7, so that the rotating speed of the threaded rod 9 is slower, the displacement between the threaded rod 9 and the threaded sleeve 10 is slower, and the fine adjustment of the height of the upper plate 3 is facilitated.

As shown in fig. 1, the lower end faces of the lower plate 4 and the upper plate 3 are fixedly connected with angle irons 12, fasteners are arranged on the angle irons 12, the upper ends of the electric push rod 15 and the threaded sleeve 10 are connected with the angle irons 12 through the fasteners, and the angle irons 12 can increase the contact area between the electric push rod 15 and the seat plate 2, so that the pressure on the seat plate 2 is reduced, and the seat plate 2 is protected from being damaged.

As shown in fig. 1 and 2, the backrest 25 includes an upper back frame 26 and a lower back frame 27, a sliding slot is provided on one side of the lower back frame 27, and the upper back frame 26 is slidably engaged with the sliding slot. The lower end of the upper back frame 26 is provided with an adjusting rope 28, the upper end of the lower back frame 27 is fixedly provided with a fixed pulley 29, and one end of the adjusting rope 28 upwards passes through the fixed pulley 29 and is downwards fixedly connected with the bracket 1. When the height of the seat board 2 is adjusted and the height between the seat board 2 and the bracket 1 is changed, the adjusting rope 28 can synchronously change the length of the upper back frame 26 extending into the lower back frame 27, thereby changing the overall height of the backrest 25 and enabling the height of the backrest 25 to be matched with the height of a human body. The backrest 25 is provided with the waist support 30, the waist support 30 is in sliding fit with the backrest 25, the waist support 30 can be manually slid, and the height of the waist support 30 can be adjusted, so that the back of the waist height of a user can be supported by escaping, and the backrest 25 is more comfortable. The back of the waist support 30 is hinged with a plurality of hook frames 31, and one end of each hook frame 31 can be arranged on the lower back frame 27 by rotating the hook frames 31, so that the waist support 30 is prevented from sliding downwards under the action of gravity.

The working principle is as follows: when the height of the seat needs to be adjusted, the main switch 24 is firstly opened, and then the bolt 21 is pulled out, so that the pedal 19 can rotate. When adjusting, the user sits on bedplate 2, can feel the comfort level that bedplate 2 height brought in real time.

The user steps on the pedal 19, presses the raising button, and energizes the electric push rod 15 to push the seat plate 2 upward, and the user determines the timing to release the pedal 19 according to his or her feeling. If the seat plate 2 is sensed to be too high, the pedal 19 can be stepped on, the descending button 18 is pressed, the descending button 18 enables the electric push rod 15 to be electrified, the electric push rod 15 drives the seat plate 2 to move downwards, the height of the seat plate 2 is adjusted to be a comfortable height, then the pedal 19 is loosened, and the rough adjustment of the height of the seat plate 2 is completed.

When fine adjustment is carried out, the forward switch 13 is pressed, the motor 6 drives the pinion 7 to rotate forward, the pinion 7 drives the large gears 8 to rotate forward, the large gears 8 drive the threaded rods 9 to rotate forward, the threaded rods 9 are moved out of the threaded sleeves 10, and therefore the threaded sleeves 10 can push the upper plate 3 upwards. When the reverse switch 14 is pressed, the threaded sleeve 10 drives the upper plate 3 to move downwards, so that the height of the upper plate 3 is adjusted. Because the angular speed between the small gear 7 and the large gear 8 is different, the displacement speed between the threaded rod 9 and the threaded sleeve 10 is low, so that the upper plate 3 can be finely adjusted, and a user can adjust the height which is most suitable for the user according to the requirement of the user.

When the height of the seat board 2 is adjusted, the height between the seat board 2 and the bracket 1 is changed, the adjusting rope 28 can pull the upper back frame 26 or loosen the upper back frame 26, so that the height of the upper back frame 26 is changed, the synchronous adjustment of the height of the backrest 25 and the height of the seat board 2 is realized, and the user has a comfortable backrest 25.

The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a chair of self-adaptation height, includes support (1), bedplate (2) and back (25), its characterized in that, bedplate (2) include upper plate (3) and hypoplastron (4), bedplate (2) are located the upper end of support (1), one side fixed connection of lower extreme and bedplate (2) of back (25), the inboard of support (1) is equipped with coarse adjustment power unit, coarse adjustment power unit's upper end and the lower terminal surface fixed connection of hypoplastron (4), both sides of support (1) lower extreme are equipped with switch group (5), switch group (5) and coarse adjustment power unit electric connection, switch group (5) are used for controlling coarse adjustment power unit, the lower extreme of upper plate (3) is equipped with fine adjustment power unit, fine adjustment power unit includes motor (6), pinion (7), gear wheel (8), Threaded rod (9) and threaded sleeve (10), motor (6) are fixed on hypoplastron (4), pinion (7) fixed connection is on the output shaft of motor (6), gear wheel (8) are fixed on hypoplastron (4), and rotate with hypoplastron (4) and be connected, gear wheel (8) and pinion (7) meshing, the one end and gear wheel (8) fixed connection of threaded rod (9), the one end that gear wheel (8) were kept away from in threaded sleeve (10) is pegged graft in threaded sleeve (9), and with threaded sleeve (10) screw-thread fit, the lower terminal surface at upper plate (3) is fixed to the one end of threaded sleeve (10), fine setting power unit is used for adjusting the height of bedplate (2), be equipped with switch group two (11) on bedplate (2), switch group two (11) and fine setting power unit electric connection, backrest (25) are including last back of the body frame (26) and lower back of the body frame (27), one side of lower back of the body frame (27) is equipped with the spout, the lower extreme of going up back of the body frame (26) is located the spout, and with spout sliding fit, the lower extreme of going up back of the body frame (26) is equipped with adjusts rope (28), the upper end of lower back of the body frame (27) has set firmly fixed pulley (29), the one end of adjusting rope (28) upwards passes fixed pulley (29) to downwards and support (1) fixed connection, the lower extreme of support (1) has set firmly energy control mechanism, energy control mechanism and each use electrical apparatus electric connection.

2. The chair with the self-adaptive height as claimed in claim 1, wherein the gear wheel (8), the threaded rod (9) and the threaded sleeve (10) are provided with a plurality of groups, the gear wheels (8) are meshed with the pinion (7), the sleeves are uniformly distributed around the gravity center of the upper plate (3), and the threaded rod (9) and the gear wheel (8) are arranged along the positions of the sleeves.

3. The height-adaptive chair according to claim 2, wherein the lower end surfaces of the lower plate (4) and the upper plate (3) are fixedly connected with angle irons (12), fasteners are arranged on the angle irons (12), and the coarse adjustment power mechanism and the threaded sleeve (10) are connected with the angle irons (12) through the fasteners.

4. The chair with the self-adaptive height as claimed in claim 1, wherein a caulking groove is formed in the side wall of one side of the upper plate (3), the second switch group (11) is located in the caulking groove, the second switch group (11) comprises a forward switch (13) and a reverse switch (14), and the forward switch (13) and the reverse switch (14) respectively control the forward rotation and the reverse rotation of the motor (6).

5. The height-adaptive chair according to claim 1, wherein the coarse adjustment power mechanism comprises a plurality of electric push rods (15), the electric push rods (15) are distributed around the gravity center of the table, a bottom plate (16) is arranged at the lower end of the support (1), and the lower ends of the electric push rods (15) are fixedly connected to the bottom plate (16).

6. A chair with self-adaptive height according to claim 5, wherein the first switch group (5) is positioned on the upper end surface of one side of the bottom plate (16), the first switch group (5) comprises a lifting button (17), a descending button (18) and two pedals (19), two ends of each pedal (19) are hinged with the bracket (1), the two pedals (19) are respectively positioned on the upper ends of the lifting button (17) and the descending button (18), and the two pedals (19) are used for pressing the lifting button (17) and the descending button (18).

7. A chair with self-adaptive height according to claim 6, characterized in that the bottom plate (16) is provided with an elastic force-bearing block (20), one end of the elastic force-bearing block (20) is connected with the pedal (19), and the elastic force-bearing block (20) is used for supporting the pedal (19) so as to keep the pedal (19) at the initial position.

8. The chair with the self-adaptive height as claimed in claim 7, wherein a plug pin (21) is inserted into the support (1), a slot is formed in the pedal (19), the plug pin (21) is in plug fit with the slot, and the plug pin (21) is used for fixing the pedal (19).

9. The height-adaptive chair according to claim 1, wherein a waist support (30) is arranged on the backrest (25), the waist support (30) is in sliding fit with the backrest (25), a plurality of hook frames (31) are hinged to the back of the waist support (30), and the hook frames (31) are in clamping fit with the backrest (25).

10. A chair of adaptive height according to claim 1, wherein the energy control mechanism comprises a power source (22) and a relay (23), and the power source (22) is provided with a main switch (24).