CN111700417A

CN111700417A - Office desk

Info

Publication number: CN111700417A
Application number: CN202010464240.2A
Authority: CN
Inventors: 李泉
Original assignee: Zhejiang Haiyijiao Decoration Furniture Co ltd
Current assignee: Zhejiang Haiyijiao Decoration Furniture Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-09-25
Anticipated expiration: 2040-05-27
Also published as: CN111700417B

Abstract

The invention relates to the technical field of tables, and aims to provide an office table which comprises a table top part, table legs and a drawer; a plurality of rotating structures are arranged on the table legs along the axial lead; the drawer is detachably connected to any rotating structure, and the rotating structure enables the drawer to rotate along the axial lead of the table leg; the office table further comprises a driving mechanism for driving the drawers to rotate and a control mechanism for controlling any drawer to rotate and the other drawers to be not move. The drawer is detachably arranged on the table legs, so that a proper amount of drawer can be arranged according to the amount of the required accommodated objects, and the space occupation below the table face part is reduced; the drawer is rotated out rather than drawn out, so that the opening of the drawer is not influenced by the table legs; and the movement of the drawer is realized by utilizing the driving mechanism and the control mechanism, so that the labor is saved, the convenience is realized, and the comfort level of a user is improved.

Description

Office desk

Technical Field

The invention relates to the technical field of desks, in particular to an office desk.

Background

The office table is a table which is convenient to work in daily life and work and social activities, and generally comprises a table top part and table legs for supporting.

Chinese patent document No. CN110638213A discloses an office table in the prior art, which includes a table top portion, a plurality of legs, and a supporting frame, wherein the upper ends of the legs support the table top portion, and the supporting frame is fixed to the legs below the table top portion. The table top part is provided with a partition board which divides the table top part into two office areas.

The above prior art solutions have the following drawbacks: many people's desks that splice use can not take the drawer cabinet certainly in order to increase the usage space usually, if will accomodate article, then need dispose the drawer cabinet in addition, and the drawer cabinet can occupy certain space when placing under the mesa portion. If the drawer cabinet is placed close to the side edge, for example, behind the front desk legs, the drawer is limited by the front desk legs and can only be pulled out towards the side; if the drawer cabinet is placed at a position close to the middle in order to avoid the desk legs, the space in which the two legs of the user can move is reduced, and the seat can be moved towards the other side along with the legs, so that the comfort level is affected.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an office table, which is high in space utilization rate of a drawer cabinet and has the effect of improving the comfort of a user.

The technical purpose of the invention is realized by the following technical scheme:

an office desk comprises a table top part, table legs and a drawer; a plurality of rotating structures are arranged on the table legs along the axial lead; the drawer is detachably connected to any rotating structure, and the rotating structure enables the drawer to rotate along the axial lead of the table leg; the office table further comprises a driving mechanism for driving the drawers to rotate and a control mechanism for controlling any drawer to rotate and the other drawers to be not move.

By adopting the technical scheme, the drawer is detachably arranged on the table legs, so that a proper amount of drawer can be arranged according to the amount of the required accommodated objects, and the space occupation below the table face part is reduced; the drawer is rotated out rather than drawn out, so that the opening of the drawer is not influenced by the table legs; and the movement of the drawer is realized by utilizing the driving mechanism and the control mechanism, so that the labor is saved, the convenience is realized, and the comfort level of a user is improved.

The invention is further configured to: the rotating structure comprises a bearing ring and a rotating sleeve which are arranged along the axial lead of the table leg; the upper end of the rotating sleeve is detachably connected with the inner ring of the upper bearing ring, and the lower end of the rotating sleeve is detachably connected with the outer ring of the lower bearing ring; the rotating sleeve comprises a first half sleeve and a second half sleeve which are semicircular, and the first half sleeve and the second half sleeve are closed towards the axial lead direction to form a circular ring shape; and an auxiliary half sleeve with the same structure as the second half sleeve is arranged on the side wall of the drawer, and the auxiliary half sleeve can be also folded with the first half sleeve to form a circular ring shape and is connected with the bearing ring.

By adopting the technical scheme, the second half sleeve and the auxiliary half sleeve can be replaced mutually, and the second half sleeve is arranged at the position of the desk leg where the drawer is not arranged, so that the attractiveness and integrity of the desk leg are ensured; and the second half sleeve is detached at the position where the drawer needs to be installed, the auxiliary half sleeve and the first half sleeve are gathered and connected to the upper bearing ring and the lower bearing ring, and the rotation of the drawer is facilitated by utilizing the bearing rings.

The invention is further configured to: the upper end and the lower end of the rotating sleeve are respectively provided with a loop bar and a loop hole, the upper end of the inner ring of the bearing ring is provided with a loop bar matched with the loop hole, and the lower end of the outer ring of the bearing ring is provided with a loop hole matched with the loop bar; the lower end of the table leg is provided with a supporting seat, a fastening sleeve is connected to the supporting seat along the axial lead in a threaded manner, and the fastening sleeve upwards supports against the lower end of the lowest bearing ring.

By adopting the technical scheme, the detachable connection between the rotating sleeve and the upper and lower bearing rings is realized by utilizing the matching between the sleeve ring and the ring rod and the matching between the sleeve hole and the ring rod; and the adapter sleeve is used for limiting the vertical displacement space between the rotating sleeve and the bearing ring, when the drawer is to be disassembled and assembled, the adapter sleeve is rotated downwards, so that the rotating sleeve and the drawer have enough space for disassembling and assembling, and the adapter sleeve is screwed upwards for limiting after the disassembling and assembling are finished.

The invention is further configured to: the driving mechanism comprises a speed reducing motor and a driving shaft; the speed reducing motor is arranged at the bottom of the table top plate; the driving shaft is rotatably connected into the table legs along the axial lead of the table legs, and the upper end of the driving shaft is connected with an output shaft of the speed reducing motor; and a linkage structure for driving the drawer to synchronously rotate is arranged between the driving shaft and the drawer.

By adopting the technical scheme, the drawer is driven to rotate by utilizing the speed reducing motor and the driving shaft, so that a user does not need to pull the drawer with great effort, and the labor is saved; and the driving shaft is hidden in the table leg, so that the table leg has better aesthetic property.

The invention is further configured to: the linkage structure comprises a driving gear arranged on the driving shaft and a linkage gear rotationally connected to the drawer; the auxiliary half sleeve is provided with a yielding hole for the linkage gear to penetrate out and be meshed with the driving gear; the control mechanism comprises a lock pin movably connected in the drawer, and the lock pin is used for controlling the linkage gear and the drawer to be locked, so that the linkage gear cannot rotate relative to the drawer.

By adopting the technical scheme, when the lock pin does not lock the linkage gear and the drawer, the driving shaft and the linkage gear rotate relatively, and the drawer does not move; and after the locking pin locks the linkage gear and the drawer, the drive shaft rotates to drive the linkage gear and the drawer to synchronously rotate, thereby realizing the control of different drawers.

The invention is further configured to: the upper end of the linkage gear is provided with a plurality of locking teeth which are uniformly distributed along the circumferential direction of the linkage gear; an upper guide hole is formed in the drawer above the linkage gear, the lock pin is connected in the upper guide hole in a sliding mode along the axis line of the linkage gear, and the upper guide hole limits the lock pin to enable the lock pin not to rotate relative to the drawer; and the lower end of the lock pin is provided with a locking groove matched with the locking teeth.

By adopting the technical scheme, when the lock pin moves downwards, the locking teeth at the upper end of the linkage gear are embedded into the locking groove to realize locking, and the lock pin cannot rotate relative to the drawer, so that the drive gear can drive the linkage gear, the lock pin and the drawer to synchronously rotate.

The invention is further configured to: the lock pin is made of ferromagnetic substances; the control mechanism further comprises an electromagnet, the electromagnet comprises a coil and an iron rod, and one end of the iron rod extends to the lower part of the lock pin; and an upper pressure spring for jacking the lock pin upwards is arranged in the upper guide hole.

By adopting the technical scheme, when the lock pin is used for locking, the electromagnet is used for generating a magnetic field to attract the lock pin to move downwards, so that the locking teeth are embedded into the locking groove; when the electromagnet does not work, the locking pin is jacked upwards by the upward pressing spring, so that the locking teeth are separated from the locking groove.

The invention is further configured to: a forward rotation button and a reverse rotation button are arranged on the outer side of the drawer; the forward rotation button and the reverse rotation button can both control the electromagnet to work, and the forward rotation button and the reverse rotation button can respectively control the forward rotation and the reverse rotation of the speed reduction motor.

By adopting the technical scheme, the forward rotation button and the reverse rotation button are used for respectively controlling the forward rotation and the reverse rotation of the drawer, and when the forward rotation button is pressed down, the electromagnet works to control the drawer to be locked with the linkage gear; meanwhile, the speed reducing motor works to enable the driving shaft to rotate and drive the drawer to rotate, and the operation is simple and convenient.

The invention is further configured to: the lock pin penetrates upwards to the outside of the drawer and is provided with a positioning groove at the end part; a lower guide hole penetrating downwards is formed in the drawer below the electromagnet, a positioning rod made of ferromagnetic substances is connected in the lower guide hole in a sliding mode, and the iron rod extends in the vertical direction; the lower end of the positioning rod can be embedded into the positioning groove in the drawer below.

By adopting the technical scheme, the positioning rod is matched with the positioning groove at the end part of the lock pin, so that adjacent drawers have a locking effect of mutually limiting rotation; when any drawer is to be rotated, the positioning rod is attracted upwards by utilizing the electromagnet to attract the locking pin to move downwards, so that the moving drawer and the adjacent drawer are unlocked.

The invention is further configured to: the corresponding positions of the upper end and the lower end of the drawer are respectively provided with an infrared transmitting device and an infrared receiving device; the infrared transmitting device and the infrared receiving device can control the electromagnet and the speed reducing motor to work.

Through adopting above-mentioned technical scheme, when the drawer resets, infrared receiving arrangement received the infrared ray that infrared transmitting device took place, and the circuit of control disconnection electro-magnet makes the electro-magnet lose the magnetic field, and the lockpin rebounds and loses the locking to control gear motor stop work, thereby realize the accurate of drawer and reset.

In conclusion, the beneficial effects of the invention are as follows:

1. the drawer is detachably arranged on the table legs, so that a proper amount of drawer can be arranged according to the amount of the required accommodated objects, and the space occupation below the table face part is reduced; the drawer is rotated out rather than drawn out, so that the opening of the drawer is not influenced by the table legs; the movement of the drawer is realized by utilizing the driving mechanism and the control mechanism, so that the labor is saved, the convenience is realized, and the comfort level of a user is improved;

2. the second half sleeve and the auxiliary half sleeve can be replaced mutually, and the second half sleeve is arranged at the position where the drawer is not arranged on the table leg, so that the attractiveness and integrity of the table leg are ensured; the second half sleeve is detached at the position where the drawer needs to be installed, the auxiliary half sleeve and the first half sleeve are combined and connected to the upper bearing ring and the lower bearing ring, and the bearing rings are used for facilitating the rotation of the drawer;

3. the drawer is driven to rotate by the speed reducing motor and the driving shaft, so that a user does not need to pull the drawer with great effort, and the labor is saved; and the driving shaft is hidden in the table leg, so that the table leg has better aesthetic property.

Drawings

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

figure 2 is a schematic view of an exploded view of the table leg of the present invention;

FIG. 3 is a schematic view of the drive mechanism and drawer of the present invention;

FIG. 4 is a schematic cross-sectional view of the drawer of the present invention at the control mechanism;

fig. 5 is a schematic sectional view of the interlocking gear and the electromagnet according to the present invention.

Reference numerals: 1. a table top portion; 2. desk legs; 21. a bearing ring; 211. a loop bar; 212. annular ring; 22. rotating the sleeve; 221. a first half sleeve; 222. a second half set; 223. a loop bar; 224. trepanning; 23. a supporting seat; 231. a adapter sleeve; 3. a drawer; 31. auxiliary half sleeve; 311. a hole of abdication; 32. an upper guide hole; 321. pressing the spring upwards; 33. a lower guide hole; 331. pressing down the spring; 34. a forward rotation button; 35. a reverse button; 4. a drive mechanism; 41. a reduction motor; 42. a drive shaft; 43. a linkage structure; 431. a drive gear; 432. a linkage gear; 4321. a central shaft; 4322. a locking tooth; 5. a control mechanism; 51. a lock pin; 511. a locking groove; 512. positioning a groove; 52. an electromagnet; 521. a coil; 522. an iron rod; 53. positioning a rod; 6. an infrared emitting device; 7. an infrared receiving device; 8. a battery.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses an office table, as shown in fig. 1, comprising a table top 1, table legs 2 and a drawer 3. The desk legs 2 are provided with a plurality of rotating structures along the axial lead, the drawer 3 can be installed at any rotating structure by adopting a detachable mode, and the rotating structures enable the drawer 3 to rotate out along the axial lead of the desk legs 2 instead of being drawn out outwards, so that the opening of the drawer 3 cannot be influenced by the desk legs 2. And the drawer 3 can be installed in a proper amount according to the amount of needed objects, so that the occupied space below the table board part 1 is reduced, and the comfort level of a user is improved.

As shown in fig. 1 and 2, the rotating structure includes a ring-shaped bearing ring 21 and a ring-shaped rotating sleeve 22, all the bearing rings 21 and the rotating sleeves 22 are alternately arranged along the axis of the table leg 2 to form the outer structure of the table leg 2, and one bearing ring 21 is disposed at each of the upper and lower ends of each rotating sleeve 22. The upper and lower ends of the rotating sleeve 22 are respectively provided with a loop bar 223 and a loop hole 224 extending along the axial lead, the upper end of the inner ring of the bearing ring 21 is welded with a loop bar 211 matched with the loop hole 224, and the lower end of the outer ring of the bearing ring 21 is provided with a loop hole 212 matched with the loop bar 223 (in the figure, the loop hole 224 and the loop hole 212 are shown by dotted lines); the detachable connection between the rotating sleeve 22 and the upper and lower bearing rings 21 is realized by the matching between the collar and the ring rod 211, the sleeve hole 224 and the ring rod 211.

As shown in fig. 2 and 3, the rotating sleeve 22 includes a first half sleeve 221 and a second half sleeve 222 in a semi-circular shape, and the first half sleeve 221 and the second half sleeve 222 are closed together in the axial direction to form a circular ring shape; an auxiliary half sleeve 31 with the same structure as the second half sleeve 222 is arranged at one corner of the side wall of the drawer 3, the second half sleeve 222 and the auxiliary half sleeve 31 can be replaced with each other, and the auxiliary half sleeve 31 can be also folded with the first half sleeve 221 to form a circular ring shape and connected with the bearing ring 21. The second half sleeve 222 is arranged at the position where the drawer 3 is not arranged on the table leg 2, so that the attractiveness and integrity of the table leg 2 are ensured; and the second half-sleeve 222 is removed at the position where the drawer 3 needs to be installed, and the auxiliary half-sleeve 31 is folded together with the first half-sleeve 221 and connected to the upper and lower bearing rings 21, so that the rotation of the drawer 3 is facilitated by the bearing rings 21.

As shown in fig. 2 and 3, the lower end of the table leg 2 is provided with a support base 23, a fastening sleeve 231 is screwed on the support base 23 along the axial line, and the fastening sleeve 231 is abutted against the lower end of the lowest bearing ring 21. The adapter sleeve 231 is used for limiting the vertical displacement space between the rotating sleeve 22 and the bearing ring 21, when the drawer 3 is to be disassembled and assembled, the adapter sleeve 231 is rotated downwards, so that the rotating sleeve 22 and the drawer 3 have enough space for disassembling and assembling, and after the disassembling and assembling are finished, the adapter sleeve 231 is screwed upwards for limiting.

As shown in fig. 3, the desk further comprises a driving mechanism 4 for driving the drawer 3 to rotate. The driving mechanism 4 comprises a speed reducing motor 41 and a driving shaft 42, the speed reducing motor 41 is installed inside the structural beam at the bottom of the table panel, the driving shaft 42 is rotatably connected inside the table leg 2 along the axial lead of the table leg 2, and the upper end of the driving shaft 42 is connected with the output shaft of the speed reducing motor 41. The linkage structure 43 is arranged between the driving shaft 42 and the drawer 3, so that the drawer 3 can be driven to rotate by utilizing the speed reducing motor 41 and the driving shaft 42, the drawer 3 does not need to be pulled by a user with great effort, and the labor is saved; and the driving shaft 42 is hidden in the table leg 2, which has better aesthetic property.

As shown in fig. 4 and 5, the desk further includes a control mechanism 5 for controlling rotation of any drawer 3 and immobility of other drawers 3, and the control mechanism 5 includes an electromagnet 52 fixedly installed in the drawer 3 and a lock pin 51 movably connected in the drawer 3. The linkage structure 43 includes a driving gear 431 fixed on the driving shaft 42 and a linkage gear 432 rotatably connected to the drawer 3, and the auxiliary half sleeve 31 is provided with a relief hole 311 through which the linkage gear 432 passes to engage with the driving gear 431. The upper end of the linkage gear 432 is provided with a plurality of locking teeth 4322, and the locking teeth 4322 are uniformly distributed along the circumferential direction of the linkage gear 432; an upper guide hole 32 is formed above the linkage gear 432 in the drawer 3, the lock pin 51 is slidably connected in the upper guide hole 32 along the axial lead of the linkage gear 432, a lock groove 511 matched with the lock tooth 4322 is formed at the lower end of the lock pin 51, and a guide strip matched with the upper guide hole 32 to limit the rotation of the lock pin 51 is arranged on the side wall of the lock pin 51. When the lock pin 51 moves downward, the locking tooth 4322 at the upper end of the linkage gear 432 is embedded into the locking groove 511 to realize locking, and the lock pin 51 cannot rotate relative to the drawer 3, so that the drive gear 431 drives the linkage gear 432, the lock pin 51 and the drawer 3 to rotate synchronously, thereby realizing control of different drawers 3.

As shown in fig. 4 and 5, a hollow central shaft 4321 is integrally formed at the axis of the linkage gear 432, the outer wall of the central shaft 4321 is in contact with the drawer 3 to realize the rotational connection, and the electromagnet 52 is located in the central shaft 4321 and is not in contact with the inner wall of the central shaft 4321. The electromagnet 52 comprises a coil 521 and an iron rod 522, the upper end of the iron rod 522 extends to the lower part of the lock pin 51, and the battery 8 for supplying power is arranged in the drawer 3, when the lock pin 51 is used for locking, the electromagnet 52 is used for generating a magnetic field to attract the lock pin 51 to move downwards, so that the locking teeth 4322 are embedded into the locking groove 511; when the electromagnet 52 does not work, the upper guide hole 32 is internally provided with an upper pressing spring 321 for jacking the lock pin 51 upwards, and the upper pressing spring 321 jacks the lock pin 51 upwards to reset, so that the locking teeth 4322 are separated from the locking groove 511.

As shown in fig. 3 and 4, a forward rotation button 34 and a reverse rotation button 35 are disposed on the front end wall of the drawer 3 in the normally retracted state, the forward rotation button 34 and the reverse rotation button 35 are both contact-pressing type key switches, the forward rotation button 34 and the reverse rotation button 35 are both connected to the electromagnet 52 through wires, and the forward rotation button 34 and the reverse rotation button 35 can respectively control the deceleration motor 41 to rotate forward and reverse through a wireless signal transmitter. When the forward rotation button 34 or the reverse rotation button 35 is pressed down, the electromagnet 52 works to control the drawer 3 and the linkage gear 432 to be locked, and simultaneously, the speed reduction motor 41 works to enable the driving shaft 42 to rotate to drive the drawer 3 to rotate, so that the operation is simple and convenient.

As shown in fig. 4 and 5, a lower guide hole 33 penetrating downward is provided in the drawer 3 below the electromagnet 52, a positioning rod 53 made of a ferromagnetic material is slidably connected to the lower guide hole 33, and a pressing spring 331 for pressing the positioning rod 53 downward is provided in the lower guide hole 33. The positioning rod 53 corresponds to the lock pin 51 in the vertical direction, the lock pin 51 penetrates upwards to the outside of the drawer 3, the end part of the lock pin 51 is provided with a positioning groove 512, the lower end of the positioning rod 53 can be embedded into the positioning groove 512 on the lower drawer 3, and the positioning rod 53 is matched with the positioning groove 512 on the end part of the lock pin 51, so that the adjacent drawers 3 have the locking effect of mutually limiting rotation; when any drawer 3 is rotated, the detent 51 is attracted downward by the electromagnet 52, and the detent 53 is attracted upward, so that the moving drawer 3 is unlocked from the adjacent drawer 3.

As shown in fig. 3 and 4, the infrared emitting device 6 and the infrared receiving device 7 are respectively disposed at corresponding positions of the upper end and the lower end of the drawer 3, and the infrared emitting device 6 and the infrared receiving device 7 can control the electromagnet 52 and the speed reduction motor 41 to operate. When the drawer 3 is reset, the infrared receiving device 7 receives infrared rays generated by the infrared emitting device 6, the circuit of the electromagnet 52 is controlled to be disconnected, the electromagnet 52 loses a magnetic field, the lock pin 51 rebounds to lose locking, and the speed reducing motor 41 is controlled to stop working, so that the drawer 3 is accurately reset.

The specific operation flow of this embodiment is as follows:

when the drawer 3 is to be installed, the fastening sleeve 231 is firstly rotated downwards, so that the rotating sleeve 22 at the position to be installed is loosened; the second half sleeve 222 is replaced by the auxiliary half sleeve 31 on the drawer 3, and the driving gear 431 is meshed with the linkage gear 432; finally, the adapter sleeve 231 is screwed up again.

When the drawer 3 is to be pulled out, the forward button 34 or the reverse button 35 on the outer side of the drawer 3 is simply pressed, so that the electromagnet 52 attracts the lock pin 51 to lock the linkage gear 432 and the drawer 3 downward, attracts the positioning rod 53 on the lower end to move upward, and the reduction motor 41 drives the driving shaft 42 to rotate, thereby driving the drawer 3 to rotate by the driving gear 431 and the linkage gear 432. When the other button is pressed, the drawer 3 rotates reversely until the infrared receiving device 7 receives the infrared ray generated by the infrared emitting device 6, the circuit of the electromagnet 52 is controlled to be switched off, the electromagnet 52 loses the magnetic field, the lock pin 51 rebounds to lose the locking, and the speed reducing motor 41 is controlled to stop working, so that the drawer 3 is accurately reset.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. An office table comprises a table top part (1), table legs (2) and a drawer (3); the method is characterized in that: a plurality of rotating structures are arranged on the table legs (2) along the axial lead; the drawer (3) is detachably connected to any rotating structure, and the rotating structure enables the drawer (3) to rotate along the axial lead of the table leg (2); the office table further comprises a driving mechanism (4) for driving the drawers (3) to rotate and a control mechanism (5) for controlling any drawer (3) to rotate and other drawers (3) to be immobile.

2. A desk as recited in claim 1, wherein: the rotating structure comprises a bearing ring (21) and a rotating sleeve (22) which are arranged along the axial lead of the table leg (2); the upper end of the rotating sleeve (22) is detachably connected with the inner ring of the upper bearing ring (21), and the lower end of the rotating sleeve (22) is detachably connected with the outer ring of the lower bearing ring (21); the rotating sleeve (22) comprises a first half sleeve (221) and a second half sleeve (222) which are semicircular, and the first half sleeve (221) and the second half sleeve (222) are closed towards the axial lead direction to form a circular ring shape; an auxiliary half sleeve (31) with the same structure as the second half sleeve (222) is arranged on the side wall of the drawer (3), and the auxiliary half sleeve (31) can be also folded with the first half sleeve (221) to form a circular ring shape and is connected with the bearing ring (21).

3. A desk as recited in claim 2, wherein: the upper end and the lower end of the rotating sleeve (22) are respectively provided with a sleeve rod (223) and a sleeve hole (224), the upper end of the inner ring of the bearing ring (21) is provided with a ring rod (211) matched with the sleeve hole (224), and the lower end of the outer ring of the bearing ring (21) is provided with a ring hole (212) matched with the sleeve rod (223); the lower end of the table leg (2) is provided with a supporting seat (23), a fastening sleeve (231) is connected to the supporting seat (23) along the axis thread, and the fastening sleeve (231) upwards supports against the lower end of the lowest bearing ring (21).

4. A desk as recited in claim 3, wherein: the driving mechanism (4) comprises a speed reduction motor (41) and a driving shaft (42); the speed reducing motor (41) is arranged at the bottom of the table top plate; the driving shaft (42) is rotatably connected into the table legs (2) along the axial lead of the table legs (2), and the upper end of the driving shaft (42) is connected with the output shaft of the speed reducing motor (41); and a linkage structure (43) for driving the drawer (3) to synchronously rotate is arranged between the driving shaft (42) and the drawer (3).

5. A desk as recited in claim 4, wherein: the linkage structure (43) comprises a driving gear (431) arranged on the driving shaft (42) and a linkage gear (432) rotationally connected to the drawer (3); the auxiliary half sleeve (31) is provided with a yielding hole (311) for the linkage gear (432) to penetrate out and be meshed with the driving gear (431); the control mechanism (5) comprises a lock pin (51) movably connected in the drawer (3), and the lock pin (51) is used for controlling the linkage gear (432) and the drawer (3) to be locked, so that the linkage gear (432) cannot rotate relative to the drawer (3).

6. A desk as recited in claim 5, wherein: the upper end of the linkage gear (432) is provided with a plurality of locking teeth (4322), and the locking teeth (4322) are uniformly distributed along the circumferential direction of the linkage gear (432); an upper guide hole (32) is formed in the drawer (3) above the linkage gear (432), the lock pin (51) is connected into the upper guide hole (32) in a sliding mode along the axis of the linkage gear (432), and the upper guide hole (32) limits the lock pin (51) to enable the lock pin not to rotate relative to the drawer (3); the lower end of the lock pin (51) is provided with a locking groove (511) matched with the locking teeth (4322).

7. A desk as recited in claim 6, wherein: the lock pin (51) is made of ferromagnetic substance; the control mechanism (5) further comprises an electromagnet (52), the electromagnet (52) comprises a coil (521) and an iron rod (522), and one end of the iron rod (522) extends to the position below the lock pin (51); an upper pressure spring (321) used for jacking the lock pin (51) upwards is arranged in the upper guide hole (32).

8. A desk as recited in claim 7, wherein: a forward rotation button (34) and a reverse rotation button (35) are arranged on the outer side of the drawer (3); the forward rotation button (34) and the reverse rotation button (35) can both control the electromagnet (52) to work, and the forward rotation button (34) and the reverse rotation button (35) can respectively control the speed reduction motor (41) to rotate forwards and reversely.

9. A desk as recited in claim 7, wherein: the lock pin (51) upwards penetrates out of the drawer (3) and is provided with a positioning groove (512) at the end part; a lower guide hole (33) penetrating downwards is formed in the drawer (3) below the electromagnet (52), a positioning rod (53) made of ferromagnetic substances is connected in the lower guide hole (33) in a sliding mode, and the iron rod (522) extends in the vertical direction; the lower end of the positioning rod (53) can be embedded into a positioning groove (512) on the lower drawer (3).

10. A desk as recited in claim 7, wherein: the corresponding positions of the upper end and the lower end of the drawer (3) are respectively provided with an infrared transmitting device (6) and an infrared receiving device (7); the infrared transmitting device (6) and the infrared receiving device (7) can control the electromagnet (52) and the speed reducing motor (41) to work.