CN218418881U

CN218418881U - Synchronous lifting table

Info

Publication number: CN218418881U
Application number: CN202222302038.7U
Authority: CN
Inventors: 曾富洪; 周兰花
Original assignee: Panzhihua University
Current assignee: Panzhihua University
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-02-03
Anticipated expiration: 2032-08-31

Abstract

The utility model relates to a synchronous lifting table, which belongs to the field of daily necessities. The leg comprises an upper support (2) and a lower support (1) which are connected in a sliding manner, a transmission shaft (8) is arranged in the lower support (1) on one side and is in threaded connection with the lower support, the upper end of the transmission shaft (8) is in contact connection with the table top plate (3), and the lower end of the transmission shaft (8) is connected with the soft rope (9); the upper part of the lower bracket (1) and the lower end of the upper bracket (2) on the other side are respectively provided with a guide pin (20) and a connecting pin (19), and the other end of the soft rope (9) is connected with the connecting pin (19) after bypassing the guide pin (20). The rotation is transmitted to the transmission shaft (8) through the bevel gear to realize the lifting of the desktop plate (3), and the main supporting leg and the driven supporting leg are connected through the soft rope (9) to realize the synchronous motion of the main supporting leg and the driven supporting leg. The problem of current synchronous lift table's structure complicacy, the cost of manufacture is high is solved.

Description

Synchronous lifting table

Technical Field

The utility model relates to a synchronous lifting table, which belongs to the field of daily necessities.

Background

The desk height that child used at different age brackets in the growth process is different, and this height-adjustable of requirement desk, people in addition when working in the front of the computer, and one is usually just several hours for work, adopt the position of sitting for a long time can produce the injury to the health, for healthy, need stand appearance and the transform between the position of sitting when people use the computer, this height that just requires the desk top can conveniently be adjusted, and traditional desk and desk do not have the height adjustment function.

The lifting mode of the existing lifting table for manually adjusting the height mainly comprises a connecting rod structure for adjusting the height, a gear rack for adjusting the height, a worm gear and worm and spiral transmission combined height adjustment, and a bevel gear transmission and spiral transmission combined height adjustment. The height adjusting states of the connecting rod structures are only two or three, stepless height adjustment cannot be realized, and the requirements of different people are difficult to meet; other lifting tables with a plurality of adjustment modes in the current market are generally provided with one set of same lifting device for each leg so as to realize synchronous lifting of each leg. For example, the national patent CN215532428U discloses a lifting table, which adopts a driving box to drive a transmission shaft to rotate, and then drives a bevel gear of each leg to rotate by the transmission shaft, so as to drive a screw mechanism of each leg to move, thereby realizing the lifting of the lifting table; the national patent CN215685550U discloses a multi-leg synchronous lifting office table, which adopts a direct current motor to transmit rotation to a pair of bevel gears, the bevel gears transmit to a transmission rod, and the transmission rod drives a lifting adjusting mechanism of each leg to realize synchronous lifting of each leg. The structure adopted by the driving modes is still relatively complex, so that the manufacturing cost is high, and the later maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the structure of the existing synchronous lifting table is complex, the manufacturing cost is high, and the later maintenance cost is high.

The utility model provides a technical scheme that its technical problem adopted is: the synchronous lifting table comprises supporting legs and a table top plate, wherein the supporting legs are of inverted T-shaped structures and are arranged at the lower end of the table top plate at intervals, the synchronous lifting table further comprises a transmission shaft, a soft rope and a rotation driving device, the supporting legs comprise an upper support and a lower support, the lower support penetrates into the upper support and is in sliding connection with the upper support, the upper end of the upper support is connected with the lower end of the table top plate, the transmission shaft is arranged in the lower support on one side, the upper portion of the transmission shaft is in threaded connection with the lower support, the rotation driving device drives the transmission shaft to rotate, the upper end of the transmission shaft extends into the upper support and is in contact connection with the lower end of the table top plate, and the lower end of the transmission shaft is connected with one end of the soft rope; the upper part of the lower bracket at the other side is provided with a guide pin, the lower end of the upper bracket at the other side is provided with a connecting pin, and the other end of the soft rope penetrates along the lower end of the lower bracket at the other side and bypasses the guide pin to be connected with the connecting pin.

The rotary driving device comprises a bevel gear box, a bevel gear driven shaft and a bevel gear driving shaft, the bevel gear box is arranged in the middle of a lower support provided with a transmission shaft, the bevel gear driven shaft and the bevel gear driving shaft are rotatably arranged in the bevel gear box, one end of the bevel gear driven shaft and one end of the bevel gear driving shaft are provided with meshed bevel gears, the bevel gear driven shaft is arranged along the length direction of support legs, and the transmission shaft is in sliding connection with the bevel gear driven shaft and rotates together with the bevel gear driven shaft.

Furthermore, in the device, a connecting hole is axially formed in the bevel gear driven shaft, and the transmission shaft penetrates through the connecting hole, so that the transmission shaft is in sliding connection with the bevel gear driven shaft and rotates together with the bevel gear driven shaft.

Furthermore, in the device, the connecting hole is of a polygonal hole structure, the lower part of the transmission shaft is of a matched structure, and the lower part of the transmission shaft penetrates into the connecting hole in the middle of the driven shaft of the bevel gear.

Further, in the device, the bevel gear box comprises a bevel gear box cover and a bevel gear box base which are detachably connected.

Furthermore, the end part of the bevel gear driving shaft in the device penetrates out of the bevel gear box and is provided with a driving part.

The transmission shaft penetrates through the lower support and is in threaded connection with the lower support.

Wherein, in the device, the upper end of the transmission shaft is connected with the table top plate through a thrust ball bearing.

The supporting legs are connected through the connecting pipe in the device, and pin shafts are arranged at two ends of the connecting pipe, so that the flexible rope is far away from the end of the transmission shaft and is connected with the connecting pin after bypassing the pin shafts and the guide pins.

Wherein, in the above-mentioned device the connecting pin sets up on the inner wall of upper bracket, is provided with the bar hole of arranging along the axial on the lateral wall of lower carriage, and the connecting pin tip penetrates in the bar hole.

The utility model has the advantages that: the device has simple structure and convenient and efficient operation. The input rotary motion is transmitted to the transmission shaft in a direction changing way through the transmission of the bevel gear by rotating the extension end of the bevel gear driving shaft, the lifting of the tabletop is realized through the spiral motion of the transmission shaft, and the upper bracket is prevented from automatically descending by the self-locking function of the spiral transmission; the transmission is convenient to operate, stable in transmission and controllable in height. Meanwhile, the transmission structures of the driving legs and the driven legs are connected through soft ropes, and the synchronous motion of the driving legs and the driven legs is realized by utilizing the self weight of the lifting transmission device and the tabletop plate, so that the integral stable lifting of the tabletop plate is realized.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left partial sectional view of the present invention.

Fig. 3 is a sectional view of fig. 2 from B-B.

Fig. 4 is an enlarged view of the structure at C in fig. 2 according to the present invention.

Fig. 5 is a front view of fig. 1 according to the present invention.

Fig. 6 is a structural diagram of the present invention before a is cut away in fig. 5.

Fig. 7 is an enlarged schematic view of the joint structure of the upper bracket and the lower bracket on the other side in fig. 5 according to the present invention.

Labeled as: the structure comprises a lower support 1, an upper support 2, a tabletop plate 3, a connecting pipe 4, a bevel gear box cover 5, a bevel gear box seat 6, a bevel gear driven shaft 7, a transmission shaft 8, a soft rope 9, a radial ball bearing A10, a radial ball bearing B11, a thrust ball bearing 12, a bevel gear driving shaft 13, an angular contact ball bearing A14, an angular contact ball bearing B15, an end cover 16, an adjusting sleeve 17, a snap ring 18, a connecting pin 19 and a guide pin 20.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 7, the table with synchronous lifting of the present invention comprises a supporting leg and a table top plate 3, wherein the supporting leg has an inverted T-shaped structure and is disposed at the lower end of the table top plate 3 at intervals, the table further comprises a transmission shaft 8, a soft rope 9 and a rotation driving device, the supporting leg comprises an upper bracket 2 and a lower bracket 1, the lower bracket 1 penetrates into the upper bracket 2 and is slidably connected with the upper bracket, the upper end of the upper bracket 2 is connected with the lower end of the table top plate 3, the transmission shaft 8 is disposed in the lower bracket 1 at one side, the upper part of the transmission shaft 8 is in threaded connection with the lower bracket 1, the rotation driving device drives the transmission shaft 8 to rotate, the upper end of the transmission shaft 8 extends into the upper bracket 2 and is in contact connection with the lower end of the table top plate 3, and the lower end of the transmission shaft 8 is connected with one end of the soft rope 9; the upper part of the lower bracket 1 at the other side is provided with a guide pin 20, the lower end of the upper bracket 2 at the other side is provided with a connecting pin 19, and the other end of the soft rope 9 penetrates through the lower end of the lower bracket 1 at the other side and bypasses the guide pin 20 to be connected with the connecting pin 19. As can be understood by those skilled in the art, the transmission shaft 8 is disposed inside the lower bracket 1 on one side, so that it is preferable that the upper bracket 2 and the lower bracket 1 are both tubular structures, the lower bracket 1 penetrates into the upper bracket 2 and is slidably connected with the upper bracket, the upper end of the upper bracket 2 is connected with the lower end of the table top plate 3, the upper end of the transmission shaft 8 extends into the upper bracket 2 and is connected with the lower end of the table top plate 3 in a contact manner, the transmission shaft 8 is driven to rotate by the rotation driving device, and the upper part of the transmission shaft 8 is connected with the lower bracket 1 through a screw thread, so that the transmission shaft 8 is actually in a spiral motion, and further directly acts on the table top plate 3 to realize the lifting. Meanwhile, the lower end of the transmission shaft 8 is connected with one end of the soft rope 9, and the other end of the soft rope 9 penetrates through the lower end of the lower support 1 on the other side and bypasses the guide pin 20 to be connected with the connecting pin 19, so that when the transmission shaft 8 is in thread lifting, the soft rope 9 can be pulled to further realize synchronous lifting of the upper support 2 on one side far away from the transmission shaft 8, otherwise, the synchronous lifting is opposite.

Preferably, the rotation driving device in the above device includes a bevel gear box, a bevel gear driven shaft 7 and a bevel gear driving shaft 13, the bevel gear box is disposed in the middle of the lower support 1 provided with the transmission shaft 8, the bevel gear driven shaft 7 and the bevel gear driving shaft 13 are rotatably disposed in the bevel gear box, one end of the bevel gear driven shaft 7 and one end of the bevel gear driving shaft 13 are provided with meshed bevel gears, the bevel gear driven shaft 7 is arranged along the length direction of the support leg, and the transmission shaft 8 is slidably connected with the bevel gear driven shaft 7 and rotates together with the bevel gear driven shaft 7. As will be understood by those skilled in the art, in order to facilitate the movement of the driving shaft 8, the present device preferably includes a bevel gear box, a bevel gear driven shaft 7 and a bevel gear driving shaft 13, the bevel gear box is disposed in the middle of the lower bracket 1 where the driving shaft 8 is disposed, the bevel gear driven shaft 7 and the bevel gear driving shaft 13 are rotatably disposed in the bevel gear box, specifically, the bevel gear driven shaft 7 is vertically disposed in the bevel gear box through a radial ball bearing a10 and a radial ball bearing B11, the bevel gear driving shaft 13 is horizontally disposed in the bevel gear box through an angular contact ball bearing a14 and an angular contact ball bearing B15, the outer side of the angular contact ball bearing B is limited by a snap ring 18, and the outer rings of the angular contact ball bearing a14 and the angular contact ball bearing B15 contact an adjusting sleeve 17 extending into the taper to avoid the wear of the bevel gear box, and the outer side is fixed by an end cap 16, and the end of the actual bevel gear driving shaft 13 extends out of the end cap 16 and is the driving part behind the end. And the bevel gear driven shaft 7 and one end of the bevel gear driving shaft 13 are provided with meshed bevel gears, the bevel gear driven shaft 7 can be driven to rotate actually by rotating the bevel gear driving shaft 13, the actual bevel gear driven shaft 7 is arranged along the length direction of the supporting leg, the transmission shaft 8 is in sliding connection with the bevel gear driven shaft 7 and rotates together with the bevel gear driven shaft 7, so that the bevel gear driven shaft 7 drives the transmission shaft 8 to rotate, and the transmission shaft 8 is in threaded motion finally due to the fact that the middle part of the transmission shaft 8 is in threaded connection with the lower support 1.

Preferably, in the device, the bevel gear driven shaft 7 is axially provided with a connecting hole, and the transmission shaft 8 is arranged in the connecting hole in a penetrating manner, so that the transmission shaft 8 is connected with the bevel gear driven shaft 7 in a sliding manner and rotates together with the bevel gear driven shaft 7. It can be understood by those skilled in the art that the present structure is only preferred to provide a connecting hole in the axial direction of the bevel gear driven shaft 7, and the transmission shaft 8 is inserted into the connecting hole, so that due to the arrangement of the connecting hole and the transmission shaft 8, the transmission shaft 8 and the bevel gear driven shaft 7 are slidably connected, that is, the transmission shaft 8 can slide along the axial direction of the bevel gear driven shaft 7, and the transmission shaft 8 and the bevel gear driven shaft 7 rotate together.

Preferably, the connecting hole in the device is a polygonal hole structure, the lower part of the transmission shaft 8 is a matched structure, and the lower part of the transmission shaft 8 penetrates into the connecting hole in the middle of the bevel gear driven shaft 7. The technical personnel in the field can understand that, in order to make things convenient for transmission shaft 8 to be connected with bevel gear driven shaft 7, the preferred bevel gear driven shaft 7 axial of this device is provided with the connecting hole, but preferred connecting hole is the square hole, and 8 lower parts of transmission shaft are square tubular construction, wear to establish transmission shaft 8 in the connecting hole, just can make transmission shaft 8 and bevel gear driven shaft 7 co-rotation, and because transmission shaft 8 and bevel gear driven shaft 7 clearance fit, so transmission shaft 8 can follow bevel gear driven shaft 7 axial sliding connection.

Preferably, the bevel gear box in the device comprises a bevel gear box cover 5 and a bevel gear box base 6 which are detachably connected. As can be understood by those skilled in the art, the bevel gear box of the device preferably comprises a bevel gear box cover 5 and a bevel gear box base 6 which are detachably connected, the outer wall of the bevel gear box cover 5 is actually connected with the upper section of the lower bracket 1, the bevel gear box base 6 is connected with the lower section of the lower bracket 1, and the bevel gear box is detachably connected to facilitate the installation of the internal components of the bevel gear box.

Preferably, in the above device, the end of the bevel gear driving shaft 13 is extended out of the bevel gear box and is provided with a driving part. It will be appreciated by those skilled in the art that in order to facilitate rotation of the bevel gear drive shaft 13, the present device preferably has the end of the bevel gear drive shaft 13 extending through the bevel gear box and having a drive portion arranged such that rotation of the bevel gear drive shaft 13 is achieved by direct rotation of the drive portion. In practice, it may be preferable that the driving part has an outer hexagonal or inner hexagonal structure.

Preferably, in the device, the middle part of the transmission shaft 8 is provided with an external thread, the upper end of the lower bracket 1 positioned at the same side of the transmission shaft 8 is provided with an internal thread matched with the external thread, and the transmission shaft 8 is arranged in the lower bracket 1 in a penetrating way and is in threaded connection with the lower bracket 1. The technical personnel in the field can understand that, this device further prefers the screw thread connection structure setting of transmission shaft 8 and lower carriage 1, specifically is provided with the external screw thread in the middle part of transmission shaft 8, and the upper end of the lower carriage 1 that is located transmission shaft 8 homonymy is provided with the internal thread of adaptation, and transmission shaft 8 wears to establish in lower carriage 1 and with lower carriage 1 threaded connection.

Preferably, the upper end of the transmission shaft 8 in the above device is connected with the table top 3 through a thrust ball bearing 12. As will be appreciated by those skilled in the art, because the drive shaft 8 is threaded upwardly, the drive shaft 8 is preferably connected to the table top 3 at its upper end by a thrust ball bearing 12 in order to avoid dry friction between the drive shaft 8 and the table top 3.

Preferably, the supporting legs in the device are connected through a connecting pipe 4, and pin shafts are arranged at two ends of the connecting pipe 4, so that the end, far away from the transmission shaft 8, of the flexible rope 9 bypasses the pin shafts and the guide pins 20 and then is connected with the connecting pin 19. As can be understood by those skilled in the art, in order to ensure the firm connection of the support legs, the two support legs are preferably connected into a whole through the connecting pipe 4, that is, the two lower brackets 1 are connected into a whole, and meanwhile, the two ends of the connecting pipe 4 are provided with the pin shafts, so that the end, far away from the transmission shaft 8, of the soft rope 9 is connected with the connecting pin 19 after bypassing the pin shaft and the guide pin 20, and the smooth operation of the soft rope 9 is ensured.

Preferably, in the above device, the connecting pin 19 is disposed on the inner wall of the upper bracket 2, the sidewall of the lower bracket 1 is provided with a strip-shaped hole arranged along the axial direction, and the end of the connecting pin 19 penetrates into the strip-shaped hole. As can be understood by those skilled in the art, in order to ensure that the upper bracket 2 far away from the side of the transmission shaft 8 moves up and down, the connecting pin 19 is preferably disposed on the inner wall of the upper bracket 2, and a strip-shaped hole is disposed on the side wall of the lower bracket 1 along the axial direction, and the end of the connecting pin 19 penetrates into the strip-shaped hole, so that the connecting pin 19 moves up and down vertically due to the arrangement of the strip-shaped hole, thereby facilitating the vertical movement of the table top 3.

Claims

1. Synchronous lift table, including landing leg and desktop board (3), the landing leg is for falling T shape structure, and the interval sets up the lower extreme at desktop board (3), its characterized in that: the support leg comprises an upper support (2) and a lower support (1), the lower support (1) penetrates into the upper support (2) and is in sliding connection with the upper support, the upper end of the upper support (2) is connected with the lower end of the table top plate (3), the transmission shaft (8) is arranged in the lower support (1) on one side, the upper portion of the transmission shaft (8) is in threaded connection with the lower support (1), the rotation driving device drives the transmission shaft (8) to rotate, the upper end of the transmission shaft (8) extends into the upper support (2) and is in contact connection with the lower end of the table top plate (3), and the lower end of the transmission shaft (8) is connected with one end of the soft rope (9); the upper part of the lower bracket (1) at the other side is provided with a guide pin (20), the lower end of the upper bracket (2) at the other side is provided with a connecting pin (19), and the other end of the soft rope (9) penetrates along the lower end of the lower bracket (1) at the other side and bypasses the guide pin (20) to be connected with the connecting pin (19).

2. The synchronous lifting table as recited in claim 1, wherein: the rotation driving device comprises a bevel gear box, a bevel gear driven shaft (7) and a bevel gear driving shaft (13), the bevel gear box is arranged in the middle of a lower support (1) provided with a transmission shaft (8), the bevel gear driven shaft (7) and the bevel gear driving shaft (13) are rotatably arranged in the bevel gear box, one ends of the bevel gear driven shaft (7) and the bevel gear driving shaft (13) are provided with meshed bevel gears, the bevel gear driven shaft (7) is arranged along the length direction of supporting legs, and the transmission shaft (8) is in sliding connection with the bevel gear driven shaft (7) and rotates together with the bevel gear driven shaft (7).

3. The synchronous lifting table as claimed in claim 2, wherein: the bevel gear driven shaft (7) is axially provided with a connecting hole, and the transmission shaft (8) penetrates through the connecting hole, so that the transmission shaft (8) is in sliding connection with the bevel gear driven shaft (7) and rotates together with the bevel gear driven shaft (7).

4. A synchronous lifting table as claimed in claim 3 wherein: the connecting hole is of a polygonal hole structure, the lower part of the transmission shaft (8) is of an adaptive structure, and the lower part of the transmission shaft (8) penetrates into the connecting hole in the middle of the bevel gear driven shaft (7).

5. The synchronous lifting table as claimed in claim 2, wherein: the bevel gear box comprises a bevel gear box cover (5) and a bevel gear box seat (6) which are detachably connected.

6. The synchronous lifting table as claimed in claim 2, wherein: the end part of the bevel gear driving shaft (13) penetrates out of the bevel gear box and is provided with a driving part.

7. The synchronous lifting table as claimed in claim 1, wherein: the middle of the transmission shaft (8) is provided with external threads, the upper end of the lower bracket (1) positioned at the same side of the transmission shaft (8) is provided with adaptive internal threads, and the transmission shaft (8) penetrates through the lower bracket (1) and is in threaded connection with the lower bracket (1).

8. The synchronous lifting table as recited in claim 1, wherein: the upper end of the transmission shaft (8) is connected with the desktop plate (3) through a thrust ball bearing (12).

9. The synchronous lifting table as recited in claim 1, wherein: the supporting legs are connected through connecting pipes, and pin shafts are arranged at two ends of each connecting pipe, so that the ends, far away from the transmission shaft (8), of the soft ropes (9) are connected with the connecting pins (19) after bypassing the pin shafts and the guide pins (20).

10. The synchronous lifting table as recited in claim 1, wherein: the connecting pin (19) is arranged on the inner wall of the upper support (2), the side wall of the lower support (1) is provided with strip-shaped holes which are arranged along the axial direction, and the end part of the connecting pin (19) penetrates into the strip-shaped holes.