CN206261124U - A kind of Multifunction expanding tables and chairs - Google Patents

Abstract

The utility model discloses a multifunctional retractable table and chair, which comprises a table top, a chair surface and a base, the table top and the chair front are arranged side by side, and the table top is arranged on the base through two supporting telescopic devices, and the rear ends of the table top and the base pass through It also includes a transmission device arranged in the base, which is used to adjust the height of the desktop; it is also used to drive the chair to move forward and backward to adjust the distance from it to the desktop; it is also used to simultaneously adjust the height of the desktop, And the distance from the chair surface to the table top. The multifunctional telescopic table and chair can be adjusted in height and change the size of the desktop area; the folding and telescopic is completed manually or electrically, and the failure rate is small.

Description

A multifunctional telescopic table and chair

technical field

The utility model belongs to the technical field of office furniture, in particular to a multifunctional retractable desk and chair.

Background technique

At present, the classroom space of each school is limited in size, and at any time, it is occupied by tables and chairs, causing a lot of inconvenience. The problems are as follows: 1. The tables and chairs are fixed and cannot be moved, which makes cleaning inconvenient. 2. Since the size of the tables and chairs is fixed, it cannot be adjusted according to the height of the person, fat or thin, and it is impossible to create a comfortable learning environment, which lacks the needs of humanization. 3. Since most of the desks and chairs in the classroom are fixed on the ground, they occupy the classroom space fixedly, and cannot hold other rich and colorful cultural and sports activities indoors. 4. The desks and chairs have single functions and can only be used for rigid class teaching. 5. The desktop area is small, and there are few things to put on it, which cannot meet the needs of individualization. 6. Since the seat is fixed on the ground, only left and right discussions can be carried out, which is not convenient for front and rear discussions, which is not conducive to discussion teaching.

Utility model content

The technical problem to be solved by the utility model is to provide a multi-functional telescopic table and chair for the deficiencies of the above-mentioned prior art. The multi-functional telescopic table and chair can be adjusted manually and electrically to adjust its height and the position of the seat surface. The size of the desktop can be adjusted, and the failure rate is small, saving energy.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is that a multi-functional telescopic table and chair includes a tabletop, a seat surface and a base, the tabletop and the chair are arranged in front and behind, and the tabletop is arranged on the base through two supporting telescopic devices. The chair surface is set on the base through the connecting device; it also includes a transmission device set in the base, the transmission device is used to adjust the height of the table top, and is also used to drive the front of the chair to move back and forth to adjust the distance from it to the table top;

The supporting telescopic device includes a sleeve vertically connected with the bottom of the desktop and a first lead screw sheathed in the sleeve, and a fixing nut matched with the first lead screw is arranged in the sleeve; The vertically connected hydraulic lifting cylinder and the horizontally arranged telescopic sleeve vertically connected with the hydraulic lifting cylinder are provided with a second lead screw connected to the base inside the telescopic sleeve.

Further, the transmission device includes a first rotating shaft and a second rotating shaft spaced from front to back and arranged transversely, two first bevel gear sets are arranged at intervals on the first rotating shaft, and the positions of the two first bevel gear sets are respectively corresponding to The position of the first lead screw corresponds to the position of the first lead screw, and the longitudinal output gears of the first bevel gear set are respectively connected with the first lead screw at the corresponding position; one end of the first rotating shaft is also provided with a first spur gear; A third shaft in front of the first shaft and parallel to it, the third shaft is provided with a second spur gear, the position of the second spur gear is corresponding to the first spur gear, and they mesh with each other; the third shaft is used to drive the first spur gear The second spur gear rotates to drive the first spur gear to rotate;

A second bevel gear set is arranged on the second rotating shaft, and the second bevel gear set is arranged horizontally and connected with the second lead screw; on the second rotating shaft and at the same end as the first spur gear, A third spur gear is provided; the transmission device also includes a fourth shaft arranged behind the second shaft and parallel to it, the positions of the fourth spur gear and the third spur gear are corresponding and meshed with each other; the fourth shaft is used to drive The fourth spur gear rotates to drive the third spur gear to rotate.

Further, a first roller is provided on the first rotating shaft between the two first bevel gear sets, and the first roller is used for people to step on and rotate with their feet to drive the first rotating shaft to rotate.

Further, the second rotating shaft is provided with a second roller, and the second rolling wheel is used for people to step on and rotate with their feet, so as to drive the second rotating shaft to rotate.

Further, it also includes a first DC motor, the first DC motor is connected with the third rotating shaft, and the first DC motor is used to drive the third rotating shaft to rotate forward or backward; the end of the third rotating shaft is provided with a first Shake the handle.

Further, a second DC motor is also included, and the second DC motor is connected with the fourth rotating shaft to drive the fourth rotating shaft to rotate forward or reversely; the end of the fourth rotating shaft is provided with a second handle.

Further, the desktop includes a first board surface and a second board surface which are spaced up and down and arranged in parallel, and the first board surface and the second board surface are connected by a linkage mechanism so that the first board surface can be folded on the The upper surface of the second board.

Further, the left and right ends of the second board are connected with a folding board that can be extended and folded downwards, and when the folding board is stretched, it is at the same level as the second board.

Further, a drawer with an open end is provided at the bottom of the second panel, and a first button and a second button are arranged on the bottom plate in the drawer, and the first button and the second button are respectively used to control the movement of the third rotating shaft. Forward rotation and reverse rotation; a third button and a fourth button are also arranged on the bottom plate in the drawer, and the third button and the fourth button are respectively used to control the forward rotation and reverse rotation of the fourth rotating shaft.

Further, the base is box-shaped, and the bottom of the base is provided with a first sliding wheel; the bottom of the hydraulic lifting cylinder is provided with a second sliding wheel.

A multifunctional telescopic table and chair of the utility model has the following advantages: 1. The height, front and back, and the size of the desktop area of the table and chair can be adjusted so as to meet humanized needs. 2. The folding and telescoping of tables and chairs can be adjusted manually or electrically to meet the needs of different groups of people. At the same time, it saves energy and meets the requirements of environmental protection. 3. After shrinking, the table and chair are small in size, occupy a small area, and are easy to move.

Description of drawings

Fig. 1 is the structural representation of a kind of multifunctional retractable table and chair of the utility model;

Fig. 2 is the structural representation of the desktop in the utility model;

Among them: 1. Desktop; 2. Chair surface; 3. Base; 4. Support telescopic device; 4-1. The first screw; 4-2. Sleeve; 5. The first shaft; .The first bevel gear set; 8. The second bevel gear set; 9. The first roller; 10. The second roller; 11. The first spur gear; 12. The third spur gear; 13. The first handle; 14. The third shaft; 15. The second crank; 16. The fourth shaft; 17. The fourth spur gear; 18. The second coupling; 19. Hydraulic lifting cylinder; 20. The second lead screw; cylinder; 22. the first panel; 23. the second panel; 24. linkage mechanism; 25. folding plate; 26. drawer; 27. the first sliding wheel; 28. the second sliding wheel; 29. the second 30. The second spur gear; 31. The first coupling; 32. The first DC motor; 33. The first button; 34. The second button; 35. The third button; 36. The fourth button.

detailed description

The utility model is a multi-functional telescopic table and chair, as shown in the figure, it includes a desktop 1, a chair surface 2 and a base 3, the desktop 1 and the chair surface 2 are arranged front and back, the desktop 1 is arranged on the base 3 through two supporting telescopic devices 4, and the chair surface 2 is arranged on the base 3 through the connection device; it also includes a transmission device arranged in the base 3, the transmission device is used to adjust the height of the table top 1, and is also used to drive the chair surface 2 to move back and forth to adjust the distance from it to the table top 1; The supporting telescopic device 4 comprises a sleeve 4-2 vertically connected to the bottom of the table top 1 and a first lead screw 4-1 sleeved in the sleeve 4-2, and the sleeve 4-2 is provided with a first screw connected to the first wire. The matching fixing nut of the bar 4-1; the connecting device includes a hydraulic lifting cylinder 19 vertically connected with the chair surface 2, and a horizontally arranged telescopic sleeve 21 vertically connected with the hydraulic lifting cylinder 19, and the telescopic sleeve 21 inner sleeve A second lead screw 20 connected to the base 3 is provided.

In the utility model, the transmission device includes a first rotating shaft 5 and a second rotating shaft 6 which are spaced apart from front to back and arranged laterally. Two first bevel gear sets 7 are arranged at intervals on the first rotating shaft 5. The positions correspond to the positions of the corresponding first lead screws 4-1 respectively, and the longitudinal output gears of the first bevel gear set are respectively connected with the first lead screws 4-1 of the corresponding positions; one end of the first rotating shaft 5 is also provided with There is a first spur gear 11; and a third rotating shaft 14 arranged in front of and parallel to the first rotating shaft 5 is also included. The third shaft 14 is provided with a second spur gear 30; the second spur gear 30 corresponds to the position of the first spur gear 11 and meshes with each other; the first handle 13 and the first DC motor 32 are used to drive the third shaft 14 rotates, and drives the first spur gear 11 to rotate through the second spur gear 30; it also includes a first DC motor 32, and the first DC motor 32 is connected to the third rotating shaft 14 through a first coupling 31. The end of the third rotating shaft 14 is provided with a first handle 13 . The first handle 13 is used to drive the third rotating shaft 14 to rotate. A drawer 26 with an open end is also provided at the bottom of the second plate surface 23, and a first button 33 and a second button 34 are arranged on the bottom plate in the drawer 26, and the first button 33 and the second button 34 are used to control the third rotating shaft respectively. 14 forward and reverse.

In the utility model, a second bevel gear set 8 is arranged on the second rotating shaft 6, and the second bevel gear set 8 is arranged horizontally and connected with the second lead screw 20; The gear 11 is provided with a third spur gear 12 at the same end; the transmission also includes a fourth shaft 16 arranged behind the second shaft 6 and parallel thereto, the fourth shaft 16 is provided with a fourth spur gear 17, the fourth The positions of the spur gear 17 and the third spur gear 12 are corresponding and meshed with each other; the second handle 15 and the second DC motor 29 are used to drive the fourth shaft 16 to rotate, and the fourth spur gear 17 is used to drive the third spur gear 12 rotation; also includes a second DC motor 29, the second DC motor 29 is connected with the fourth rotating shaft 16 through the second coupling 18, and is used to drive the fourth rotating shaft 16 to rotate forward or backward; the end of the fourth rotating shaft 16 The second handle 15 is arranged on the upper part, and the second handle 15 is used to drive the fourth rotating shaft 16 to rotate. A third button 35 and a fourth button 36 are also arranged on the bottom plate in the drawer 26 , and the third button 35 and the fourth button 36 are respectively used to control the forward rotation and reverse rotation of the fourth rotating shaft 16 . In actual use, the first handle 13 and the second handle 15 can be disassembled. When the height of the table and chair needs to be adjusted manually, it can be used by connecting the extension ends of the third rotating shaft 14 and the fourth rotating shaft 16, which is convenient. Use, and the first handle 13 and the second handle 15 can be set to different colors.

In the utility model, a first roller 9 is arranged on the first rotating shaft 5 and between the two first bevel gear sets 7. The first roller 9 is used for people to step on and rotate with their feet to drive the first rotating shaft 5 to rotate. . The second rotating shaft 6 is provided with a second roller 10, and the second roller 10 is used for people to step on and rotate with their feet to drive the second rotating shaft 6 to rotate. The base 3 is box-shaped, and the bottom of the base 3 is also provided with a first sliding wheel 27 . The bottom of the hydraulic lifting cylinder 19 is provided with a second sliding wheel 28 . The first roller 9 and the second roller 10 can be fine-tuned, and the adjustment is more precise.

As shown in Figure 2, the desktop 1 includes a first plate surface 22 and a second plate surface 23 that are spaced up and down and arranged in parallel, and the first plate surface 22 and the second plate surface 23 are connected by a link mechanism 24, so that the first plate surface One panel 22 can be folded on the upper surface of the second panel 23 . Both left and right ends of the second board surface 23 are connected with a folding board 25 that can be extended and folded downwards. When the folding board 25 is stretched, it is at the same level as the second board board 23 .

The utility model is a multifunctional telescopic table and chair. The adjustment process of the height of the desktop 1 is as follows: if the height of the desktop 1 needs to be adjusted manually, the first handle 13 is shaken to drive the third rotating shaft 14 to rotate, and the second spur gear 30 drives the first The rotation of the straight gear 11, under the rotation of the first straight gear 11, drives the first rotating shaft 5 to rotate, then the first bevel gear set 7 moves, and its longitudinal gear drives the first screw 4-1 to rotate, so as to realize the height adjustment of the desktop 1 Adjustment.

It is also possible to adjust the height of the desktop 1 by means of electric control, press the first button 33 or the second button 34, and start the first DC motor 32 to drive the forward or reverse rotation of the third rotating shaft 14 to realize the height of the desktop 1. adjustment.

After the above adjustment, if fine adjustment is needed, then use the feet to turn the first roller 9, turn the first rotating shaft 5, then the first bevel gear set 7 moves, and its longitudinal gear drives the first lead screw 4-1 to rotate, so as to realize the height of the desktop 1. fine-tuning.

The utility model is a multifunctional telescopic table and chair. The adjustment process of the height of the chair surface 2 is as follows: if the height of the chair surface 2 needs to be adjusted manually, the second handle 15 is shaken to drive the fourth rotating shaft 16 to rotate, and the fourth spur gear Driven by 17, the third spur gear 12 rotates to drive the second rotating shaft 6 to rotate, and drives the second bevel gear set 8 to move, and its longitudinal gear drives the second leading screw 20 to rotate to realize the front and rear adjustment of the seat surface 2.

It is also possible to adjust the height of the chair surface 2 by means of electric control, press the third button 34 or the fourth button 36, and start the second DC motor 29 to drive the forward or reverse rotation of the second rotating shaft 6 to realize the seat surface 2. Height adjustment.

After the above adjustment, if fine-tuning is still needed, turn the second roller 10 with your feet, turn the second rotating shaft 6, then the second bevel gear set 8 moves, and its longitudinal gear drives the second lead screw 20 to rotate, so as to realize the adjustment of the height of the seat surface 2. Minor adjustments.

Claims (10)

1. a kind of Multifunction expanding tables and chairs, it is characterised in that including desktop (1), seat (2) and base (3), the desktop (1) Set with before and after seat (2), the desktop (1) is arranged on base (3) by two support telescopic devices (4), the seat (2) it is arranged on base (3) by attachment means；Also include the transmission device being arranged in base (3), the transmission device is used In the height of adjustment desktop (1), it is additionally operable to drive seat (2) to move forward and backward, to adjust its distance for arriving desktop (1)；

The support telescopic device (4) is including the sleeve (4-2) that is connected with desktop (1) bottom vertically and is sheathed on sleeve (4- 2) fixing nut matched with the first leading screw (4-1) is provided with the first leading screw (4-1) in, the sleeve (4-2)；It is described Attachment means include the hydraulic lifting tin (19) be connected vertically with seat (2) and vertical are connected with hydraulic lifting tin (19) The second leading screw (20) being connected with base (3) is arranged with horizontally disposed extension sleeve (21), the extension sleeve (21).

2. according to a kind of Multifunction expanding tables and chairs described in claim 1, it is characterised in that between the transmission device is including before and after Every and horizontally set first rotating shaft (5) and the second rotating shaft (6), two first cones are arranged at intervals with the first rotating shaft (5) Gear train (7), the position of two positions of the first bevel gear group (7) respectively with corresponding first leading screw (4-1) is corresponding, And the longitudinal output gear of first bevel gear group (7) is connected with first leading screw (4-1) of correspondence position respectively；Described first turn One end of axle (5) is additionally provided with the first spur gear (11)；Also include being arranged on first rotating shaft (5) front and in parallel the Three rotating shafts (14), are provided with the second spur gear (30) on the 3rd rotating shaft (14), second spur gear (30) and first straight The position of gear (11) is corresponding, and intermeshing；3rd rotating shaft (14) is rotated for the second spur gear of drive (30), to drive First spur gear (11) is rotated；

A second bevel gear group (8) is provided with second rotating shaft (6), second bevel gear group (8) level to setting, It is connected with the second leading screw (20)；In same one end on second rotating shaft (6) and with the first spur gear (11), the 3rd is provided with Spur gear (12)；The transmission device also includes being arranged on the second rotating shaft (6) rear and the 4th rotating shaft (16) in parallel, 4th spur gear (17) is corresponding with the position of the 3rd spur gear (12), and intermeshing；4th rotating shaft (16) is for driving the Four spur gears (17) are rotated, to drive the 3rd spur gear (12) to rotate.

3. according to a kind of Multifunction expanding tables and chairs described in claim 2, it is characterised in that on the first rotating shaft (5), and position The first roller (9) is provided between two first bevel gear groups (7), first roller (9) is trampled simultaneously for people with pin Rotate, to drive first rotating shaft (5) to rotate.

4. according to a kind of Multifunction expanding tables and chairs described in claim 3, it is characterised in that set on second rotating shaft (6) There is the second roller (10), second roller (10) is trampled and rotated for people with pin, to drive the second rotating shaft (6) to rotate.

5. according to a kind of Multifunction expanding tables and chairs described in claim 4, it is characterised in that also including the first direct current generator (32), first direct current generator (32) is connected with the 3rd rotating shaft (14), and first direct current generator (32) is for driving the Three rotating shafts (14) forward or reverse；The end of the 3rd rotating shaft (14) is provided with the first crank (13).

6. according to a kind of Multifunction expanding tables and chairs described in claim 5, it is characterised in that also including the second direct current generator (29), second direct current generator (29) is connected with the 4th rotating shaft (16), for driving the 4th rotating shaft (16) forward or reverse； The end of the 4th rotating shaft (16) is provided with the second crank (15).

7. according to a kind of Multifunction expanding tables and chairs described in claim 6, it is characterised in that the desktop (1) is including between the upper and lower Every and the first plate face (22) and the second plate face (23) that be arranged in parallel, first plate face (22) and the second plate face (23) are by even Linkage mechanism (24) is connected, so that first plate face (22) may be folded in the second plate face (23) upper surface.

8. according to a kind of Multifunction expanding tables and chairs described in claim 7, it is characterised in that the left and right of second plate face (23) Two ends are respectively connected with a folded sheet (25) that is extensible and turning up downwards, when the folded sheet (25) is stretched, with second plate Face (23) is in same level.

9. according to a kind of Multifunction expanding tables and chairs described in claim 8, it is characterised in that the second plate face (23) bottom is also The drawer (26) of open at one end is provided with, the first button (33) and the second button are provided with the base plate in the drawer (26) (34), first button (33) and the second button (34) are respectively used to control rotating and reverse for the 3rd rotating shaft (14)；It is described The 3rd button (35) and the 4th button (36) are additionally provided with base plate in drawer (26), the 3rd button (35) and the 4th press Button (36) is respectively used to control rotating and reverse for the 4th rotating shaft (16).

10. according to a kind of Multifunction expanding tables and chairs described in claim 9, it is characterised in that the base (3) is case shape, And the bottom of the base (3) is additionally provided with the first movable pulley (27)；The bottom of hydraulic lifting cylinder (19) is provided with second Movable pulley (28).