CN210203825U - Telescopic structure and learning table with same - Google Patents

Abstract

The utility model relates to a extending structure has this extending structure's study table with using, wherein extending structure is including first flexible pipe, the flexible pipe of second, lift actuating mechanism and lining spare subassembly, the flexible inside of establishing at first flexible pipe can be inserted telescopically to the flexible pipe of second, lift actuating mechanism is connected with the flexible pipe of first flexible pipe and second respectively to can drive the flexible pipe of second and reciprocate for first flexible pipe, lining spare subassembly is including a plurality of lining spare that set up on the flexible pipe lateral wall of second along circumference, and this lining spare epirelief is equipped with the bump that offsets with the inside wall of first flexible pipe. Compared with the prior art, the utility model has the advantages of: through the setting of lining piece, can avoid the flexible pipe of second to take place to rock reciprocating the in-process, and the setting of bump can reduce the area of contact of lining piece with first flexible pipe, on the one hand, has reduced the wearing and tearing of lining piece, and on the other hand has improved extending structure's smooth nature.

Description

Telescopic structure and learning table with same

Technical Field

The utility model relates to the technical field of furniture, in particular to a flexible structure and a learning table using the same.

Background

The study table is used in school classroom or family, and is a common study tool for students and word workers. At present, in most study tables, the table top is mostly fixed, the height of the table top cannot be adjusted, so that the use is inconvenient, and particularly, when the desk is used by pupils, the desk is unscientific in arrangement, easy to cause humpback or myopia and other adverse consequences, and the desk can be adjusted to a proper sitting posture only by replacing chairs with different heights, so that the use is inconvenient.

Some height-adjustable learning tables appear in the market at present, and the height of the table top is adjusted by arranging the telescopic structures on the table leg parts. A free lift table as disclosed in utility model patent No. CN201020142472.8 (publication No. CN201630555U) of free lift table, comprising: desktop and left and right table leg are equipped with left linking bridge and are connected with left table leg respectively between desktop and left table leg, are equipped with right linking bridge and are connected with desktop and right table leg respectively between desktop and right table leg, rotate on left and right linking bridge and be connected with the transmission pole, and left and right table leg adopts the lift leg, the lift leg includes: the transmission device comprises a cylinder cover and a sleeve, wherein one end of the cylinder cover is connected with a left connecting support or a right connecting support, the other end of the cylinder cover is arranged in the sleeve, the cylinder cover is connected with the sleeve in a sliding manner, a supporting cylinder is arranged in the cylinder cover, the lower end of the supporting cylinder is arranged at the bottom of the sleeve, a nut is arranged at the upper end of the supporting cylinder, a screw rod is connected with the inner thread of the nut in a rotating manner, the upper portion of the screw rod is connected with the left connecting support or the right connecting support in a rotating manner, and a second helical gear is arranged at the upper end of the screw. Wherein the lower extreme of cover is provided with the slider, and this slider offsets with telescopic inside wall, and it plays the effect that prevents the cover wobbling as the lining spare.

However, both sides of the lining element generally need to be fixed by fastening screws or buckles, and the lining element contacts the inner wall of the table leg on the outer side in a large area and contacts the inner wall of the table leg all around, so that the material consumption is excessive, the friction force is large, the lining element is seriously abraded, and the lifting of the telescopic structure is not smooth enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is to prior art's current situation, provides a little and the good extending structure of smoothness of wearing and tearing.

The second technical problem to be solved by the utility model is to provide a learning desk with the above-mentioned telescopic structure in view of the current situation of the prior art.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a telescoping structure, characterized by: the lining component comprises a plurality of lining parts which are arranged on the outer side wall of the second telescopic pipe along the circumferential direction, and salient points which are abutted against the inner side wall of the first telescopic pipe are convexly arranged on the lining parts.

Preferably, the number of the lining element assemblies is at least two, and the lining element assemblies are arranged at intervals along the height direction of the second telescopic pipe, so that the stability of the second telescopic pipe in the up-and-down moving process is further improved.

Preferably, the lining piece is convexly provided with a positioning column, and correspondingly, the outer side wall of the second telescopic pipe is provided with a positioning hole for inserting the positioning column. The cooperation of reference column and locating hole can realize lining spare spacing in two directions, and the spacing of the inside wall of the first flexible pipe of cooperation can realize lining spare spacing completely in three directions.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the utility model provides an use study table that has foretell extending structure which characterized in that: the telescopic table is characterized by further comprising two supporting legs and a table top, the supporting legs are symmetrically arranged below the table top through the telescopic structures respectively, the bottom of the first telescopic tube is connected with the supporting legs, and the top of the second telescopic tube is connected with the table top.

Preferably, the lifting driving mechanism comprises a supporting tube, a screw rod, a gear box and a crank, wherein the lower end of the supporting tube is arranged at the bottom of the first telescopic tube, a screw hole is formed in the upper end of the supporting tube, the screw rod is connected to the inside of the supporting tube through the screw hole, the gear box is arranged at the top of the second telescopic tube and is rotatably connected with the top of the screw rod, a first gear and a second gear which are perpendicular to each other and meshed are arranged in the gear box, the first gear is connected to the top of the screw rod, and the crank is arranged on the side wall of the gear box in a penetrating mode and is connected with the second gear. When the crank is rotated to drive the second gear to rotate, the first gear rotates to further drive the screw to rotate, the screw can move up and down along the screw hole in the rotating process, and finally the second telescopic pipe is driven to move up and down. Of course, the lifting driving mechanism can also be designed as a motor gear set to realize the automatic lifting of the second telescopic pipe of the telescopic structure in the first telescopic pipe.

Furthermore, the lateral wall that the screw rod is located the bottom is overlapped and is equipped with the bush, and the lateral wall of this bush offsets with the inside wall of stay tube, plays the effect that prevents the screw rod wobbling.

Furthermore, the desk also comprises a transmission rod, and two ends of the transmission rod are respectively connected with second gears in the gear boxes at two sides of the desk. The transmission rod can transmit the rotating torque input by the crank to one side of the learning table to the other side of the learning table to drive the second telescopic pipes on the other side to move up and down, so that the synchronous motion of the second telescopic pipes on the two sides is ensured.

Preferably, the first telescopic pipes and the supporting legs are integrally arranged, and a connecting plate is connected between the first telescopic pipes positioned at two sides of the learning table, so that the stability of the supporting legs at two sides of the learning table is improved.

Preferably, the side wall of the second telescopic pipe is provided with a scale mark for displaying the height along the height direction, so that a user can be prompted to know the specific height of the learning table.

Preferably, foot pads made of wear-resistant materials are arranged on two sides of the bottom of the supporting foot. On the one hand, play the effect of protection ground and supporting legs, on the other hand can reduce the area of contact on study table and ground, and convenience of customers moves the study table.

Compared with the prior art, the utility model has the advantages of: through the setting of lining piece, can avoid the flexible pipe of second to take place to rock reciprocating the in-process, and the setting of bump can reduce the area of contact of lining piece and first flexible pipe, and then reduces the frictional force that first flexible pipe and the flexible pipe of second produced at the relative motion in-process, on the one hand, has reduced the wearing and tearing of lining piece, and on the other hand has improved extending structure's smoothness nature.

Drawings

FIG. 1 is a schematic perspective view of a learning table according to an embodiment of the present invention;

FIG. 2 is an exploded perspective view of FIG. 1;

FIG. 3 is a schematic perspective view of the lifting driving mechanism of FIG. 2;

FIG. 4 is an exploded perspective view of FIG. 3;

FIG. 5 is a perspective view of the liner assembly of FIG. 2;

FIG. 6 is a cross-sectional view of FIG. 1;

FIG. 7 is an enlarged view of a portion of FIG. 6;

fig. 8 is a schematic view of the elevated height of the telescoping structure in fig. 7.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 8, the telescopic structure of the present embodiment includes a first telescopic tube 1, a second telescopic tube 2, a lifting driving mechanism 3 and a lining component, the second telescopic tube 2 can be telescopically inserted into the first telescopic tube 1, the lifting driving mechanism 3 is respectively connected to the first telescopic tube 1 and the second telescopic tube 2 and can drive the second telescopic tube 2 to move up and down relative to the first telescopic tube 1, the lining component includes a plurality of lining members 4 circumferentially disposed on an outer sidewall of the second telescopic tube 2, and protruding points 41 abutting against an inner sidewall of the first telescopic tube 1 are convexly disposed on the lining members 4. Through the setting of lining piece 4, can avoid the second flexible pipe 2 to take place to rock at the in-process that reciprocates, and the setting of bump 41 can reduce the area of contact of lining piece 4 and first flexible pipe 1, and then reduces the frictional force that first flexible pipe 1 and second flexible pipe 2 produced in the relative motion process, on the one hand, has reduced the wearing and tearing of lining piece 4, and on the other hand has improved extending structure's smoothness nature, and lining piece 4 consumes the material relatively reduces simultaneously. The number of lining spare subassembly is two sets of at least, and arranges along the direction of height interval of second extension pipe 2 to further improve the stability of second extension pipe 2 in the process of reciprocating. The number of the convex points 41 can be set according to the requirement, and as shown in fig. 5, in this embodiment, two convex points 41 are provided on some of the lining members 4, and one convex point is provided on some of the lining members 4. In addition, the specific number of the lining elements 4 can be set according to requirements, in the embodiment, the number of the lining element assemblies is two, each group of the lining element assemblies comprises four lining elements 4, the second telescopic pipe 2 is a square pipe, and the four lining elements are respectively arranged on four side walls of the square pipe. The lining element 4 and the second telescopic tube 2 can be connected according to the requirement, in the embodiment, the lining element 4 is convexly provided with the positioning column 42, correspondingly, the outer side wall of the second telescopic tube 2 is provided with the positioning hole 21 for the positioning column 42 to be inserted, the lining element 4 can be limited in two directions by matching the positioning column 42 with the positioning hole 21, and the lining element 4 can be completely limited in three directions by matching the limit of the inner side wall of the first telescopic tube 1.

The telescopic structure can be applied to a plurality of devices with size adjustment requirements, and for better understanding, the telescopic structure is described by taking the telescopic structure applied to a learning table as an example.

The utility model also provides an use study table that has above-mentioned extending structure, including supporting legs 5 and desktop 6, the quantity of supporting legs 5 is two to set up in the below of desktop 6 through extending structure symmetry respectively, the bottom of first flexible pipe 1 is connected with supporting legs 5, and the top of the flexible pipe 2 of second is connected with desktop 6.

In this embodiment, as shown in fig. 3 and 4, the lifting driving mechanism 3 includes a supporting tube 31, a screw rod 32, a gear box 33 and a crank 34, a lower end of the supporting tube 31 is fixed at the bottom of the first telescopic tube 1 by a U-shaped rotation-preventing connecting piece 35 so as to be unable to rotate, an upper end of the supporting tube 31 is provided with a screw hole 311, the screw rod 32 is connected inside the supporting tube 31 through the screw hole 311, the gear box 33 is arranged at the top of the second telescopic tube 2 and is rotatably connected with the top of the screw rod 32, a first gear 331 and a second gear 332 which are vertically arranged and engaged with each other are installed in the gear box 33, the first gear 331 is connected to the top of the screw rod 32, and the crank 34 is arranged on a side wall of the gear. In this embodiment, the screw hole 311 is formed at the upper end of the support tube 31 by riveting a nut. When the crank 34 is rotated to drive the second gear 332 to rotate, the first gear 331 rotates to further drive the screw 32 to rotate, and the screw 32 moves up and down along the screw hole 311 in the rotating process (the moving direction depends on the rotating direction of the crank 34), and finally drives the second telescopic tube 2 to move up and down. Of course, the lifting driving mechanism 3 can also be designed as a motor gear set to realize the automatic lifting of the second extension tube 2 of the extension structure in the first extension tube 1. Wherein, the cover is equipped with bush 321 on the lateral wall that the screw rod 32 is located the bottom, and the lateral wall of this bush 321 offsets with the inside wall of stay tube 31, plays the effect that prevents the swing of screw rod 32.

As described above, in the present embodiment, two support legs 5 are provided, so that two sets of telescopic structures are required to adjust the height of the table top 6, and therefore two lifting driving mechanisms 3 are required, in order to ensure that the telescopic structures on two sides achieve synchronous motion, the second gears 332 in the gear boxes 33 on two sides of the learning table are connected through the transmission rod 7, and the transmission rod 7 is arranged to transmit the rotation torque input by the crank 34 to one side of the learning table to the other side to drive the second telescopic tube 2 on the other side to move up and down, so as to ensure the synchronous motion of the second telescopic tubes 2 on two sides. Of course, the arrangement of the transmission rod 7 can also omit the crank 34 in one of the lifting drive mechanisms 3, i.e. the movement of the lifting drive mechanisms 3 on both sides can be realized through the arrangement of the crank 34 on one side.

In order to improve the stability of the supporting feet 5 at the two sides of the learning table, the first telescopic pipes 1 and the supporting feet 5 are arranged integrally, and a connecting plate 8 is connected between the first telescopic pipes 1 at the two sides of the learning table. And scale marks 22 for displaying the height are arranged on the side wall of the second extension tube 2 along the height direction, so that a user can be prompted to know the specific height of the learning table. The foot pads 51 made of wear-resistant materials are arranged on two sides of the bottom of the supporting leg 5, so that the ground and the supporting leg 5 are protected on the one hand, the contact area between the learning table and the ground can be reduced on the other hand, and convenience is brought to a user to move the learning table.

Of course, the above-mentioned telescopic structure is not limited to be applied to a learning desk, and can also be applied to other equipment such as a learning chair, taking the learning chair as an example, the height of the chair back of the learning chair can be adjusted through the telescopic structure, and specifically, refer to the utility model patent of "a learning chair back lifting device and learning chair" with patent application number CN201721361942.8 (publication number CN 208550596U).

The working principle of the utility model is as follows: when the height of the learning table needs to be adjusted, as shown in fig. 7, the crank 34 is rotated in a specific direction to drive the second gear 332 to rotate, the transmission rod 7 transmits the rotation of the second gear 332 to the second gear 332 on the other side of the learning table, the second gears 332 on the two sides rotate synchronously to drive the first gear 331 to rotate, and further drive the screw rod 32 to rotate, the screw rod 32 can move upwards along the screw hole 311 in the rotating process, and finally drive the second telescopic tube 2 to move upwards, and the lining member 4 is arranged to prevent the second telescopic tube 2 from shaking in the up-and-down moving process until the height of the second telescopic tube 2 is adjusted to a proper height, and then the crank 34 stops rotating, as shown in fig. 8, and the height of the telescopic structure rises.

Claims (10)

1. A telescoping structure, characterized by: including first flexible pipe (1), second flexible pipe (2), lift actuating mechanism (3) and lining spare subassembly, the inside of establishing in first flexible pipe (1) can be inserted telescopically in second flexible pipe (2), lift actuating mechanism (3) are connected with first flexible pipe (1) and second flexible pipe (2) respectively to can drive second flexible pipe (2) and reciprocate for first flexible pipe (1), lining spare subassembly is including a plurality of lining spare (4) of setting on second flexible pipe (2) lateral wall along circumference, and this lining spare (4) epirelief is equipped with bump (41) that offset with the inside wall of first flexible pipe (1).

2. The telescoping structure of claim 1, wherein: the number of the lining component assemblies is at least two, and the lining component assemblies are arranged at intervals along the height direction of the second telescopic pipe (2).

3. The telescoping structure of claim 1, wherein: the lining piece (4) is convexly provided with a positioning column (42), and correspondingly, the outer side wall of the second telescopic pipe (2) is provided with a positioning hole (21) for the positioning column (42) to be inserted.

4. A learning table to which the telescopic structure of any one of claims 1 to 3 is applied, characterized in that: the telescopic table is characterized by further comprising two supporting legs (5) and a table top (6), wherein the two supporting legs (5) are symmetrically arranged below the table top (6) through telescopic structures respectively, the bottom of the first telescopic tube (1) is connected with the supporting legs (5), and the top of the second telescopic tube (2) is connected with the table top (6).

5. The learning table of claim 4, wherein: lifting drive mechanism (3) are including stay tube (31), screw rod (32), gear box (33) and crank (34), the lower extreme setting of stay tube (31) is in the bottom of first flexible pipe (1), and screw hole (311) have been seted up to the upper end of stay tube (31), screw rod (32) are connected in the inside of stay tube (31) through screw hole (311), gear box (33) set up the top at second flexible pipe (2), and rotate with the top of screw rod (32) and be connected, install mutually perpendicular setting and the first gear (331) and second gear (332) of meshing in gear box (33), the top at screw rod (32) is connected in first gear (331), crank (34) are worn to establish on the lateral wall of gear box (33) and are connected with second gear (332).

6. The learning table of claim 5, wherein: the outer side wall of the screw (32) at the bottom is sleeved with a bushing (321), and the outer side wall of the bushing (321) is abutted to the inner side wall of the supporting pipe (31).

7. The learning table of claim 5, wherein: the desk further comprises a transmission rod (7), and two ends of the transmission rod (7) are respectively connected with second gears (332) in gear boxes (33) positioned on two sides of the desk.

8. The learning table of claim 4, wherein: the first telescopic pipes (1) and the supporting legs (5) are integrally arranged, and a connecting plate (8) is connected between the first telescopic pipes (1) positioned at two sides of the learning table.

9. The learning table of claim 4, wherein: and scale marks (22) for displaying the height are arranged on the side wall of the second extension pipe (2) along the height direction.

10. The learning table of claim 4, wherein: foot pads (51) made of wear-resistant materials are arranged on two sides of the bottom of the supporting leg (5).

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