Folding table structure

Abstract

A folding table structure comprises a table top, two table legs, a cross beam combined between the table legs and two rotating frames, the two rotating frames are combined on the two opposite sides of the bottom face of the table top respectively, the rotating frames are combined at the top ends of the table legs in a turnover mode respectively, and a plurality of adjustable supporting columns are arranged at the bottom ends of the table legs respectively. A lifting wheel frame is arranged in each table leg, a plurality of rolling wheels are arranged at the bottom end of each lifting wheel frame, and each lifting wheel frame is connected to each rotating frame, so that when the table top and each rotating frame turn over from the horizontal direction (using state) to the vertical direction (moving state), each lifting wheel frame moves downwards to enable each rolling wheel to protrude out of each table leg. According to the utility model, the rollers extend out only when moving, and when in use, the rollers are folded to enable the adjustable pillars to be grounded, so that the rollers can be prevented from rotating when being grounded, and the height of the adjustable pillars can be adjusted to correspond to the uneven ground.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foldable table, in particular to a foldable table structure capable of storing the rollers in the table legs. BACKGROUND

[0002] When flexible space planning is required, foldable tables are often used to replace fixed tables so that the tables can be folded and stored when not in use to reduce the occupied space. However, such foldable tables must be easily movable and positionable, and are often provided with multiple wheels under the table legs to contact the ground. In order to facilitate movement, the wheels are usually horizontally rotatable by 360 degrees. Therefore, even if the wheels are locked after being moved and positioned, the wheels can still be slightly rotated, causing the table to be accidentally moved.

[0003] In addition, the wheels of the prior art do not have a mechanism for adjusting the height, and if the ground is uneven, all the wheels cannot contact the ground, which will cause the table to shake.

[0004] Therefore, based on years of research and practical experience in the relevant field, the present inventor has developed a foldable table structure to improve the shortcomings of the prior art. SUMMARY

[0005] The main purpose of the utility model is to provide a foldable table structure that can store the rollers when the table top is in a flat use state and contact the ground with adjustable supports to correspond to uneven ground. When the table top is in a moving state of being flipped, the rollers are pushed out of the table legs by the flipping action of the table top, and the rollers can contact the ground to facilitate movement.

[0006] To achieve the above purpose, the foldable table structure of the utility model comprises a table top, two table legs, a cross beam combined between the table legs, and two rotating frames. The opposite sides of the bottom surface of the table top are combined with a rotating frame, and the rotating frame is reversibly combined with the top end of each table leg. The bottom end of each table leg has multiple adjustable supports. The foldable table structure is characterized in that each table leg comprises a lifting wheel frame, the bottom end of each lifting wheel frame is provided with multiple rollers, and each lifting wheel frame is connected to each rotating frame. When the table top and the rotating frame are flipped from the horizontal direction to the vertical direction, each lifting wheel frame moves downward, and each roller protrudes out of each table leg.

[0007] In an embodiment, each of the table legs has a leg accommodating space inside for accommodating a lifting wheel frame, each of the table legs has a rotating shaft protruding inwardly at the top end, each of the rotating frames is rotatably sleeved on the outside of the rotating shaft, each of the rotating frames is located on the inside of the table leg, the crossbeam is combined between the rotating shafts, the crossbeam fixes the table legs from rotating, each of the table legs has a rotating hole on one side of the rotating shaft at the top end, that is, the rotating shaft is slightly smaller than the top end of the table leg, so that the rotating hole is arranged on the side, each of the rotating frames has a driving shaft protruding towards the rotating hole, each of the driving shafts extends to the leg accommodating space through the rotating hole, each of the driving shafts is connected to the lifting wheel frame, each of the rotating frames has a locking accommodating space inside for accommodating a locking rod, each of the rotating shafts has a plurality of locking grooves, and each of the locking rods is telescopically clamped on one of the locking grooves.

[0008] Each of the rotating holes can extend along the circumference of the rotating shaft, because the driving shaft performs circumferential movement when the rotating frame rotates, and the rotating hole extending along the circumference enables the driving shaft to move without being blocked when the rotating frame rotates. The top of each of the lifting wheel frames can have a connecting piece sleeved on the driving shaft, so that the movement of the driving shaft can drive the movement of the lifting wheel frame when the rotating frame rotates. Each of the connecting pieces can be sleeved on the driving shaft in a horizontally extending long circular hole, so that the circumferential movement of the driving shaft can be smoothly converted into the vertical movement of the lifting wheel frame.

[0009] In an embodiment, the locking rods are combined with a linkage rod, so that the user can operate the linkage rod to simultaneously move the locking rods out of the locking grooves, and then rotate the table top and the rotating frames; each of the locking rods is connected to a return spring, so that the locking rod is clamped on one of the locking grooves by default, and the locking rod is pushed into another locking groove by the return spring when the user releases the locking rod and rotates to the position; each of the driving shafts and the locking rods is arranged on the opposite side of the rotating shaft, for example, the driving shaft is arranged on the side facing downward when the table top is turned over, and the locking rod is arranged on the side facing upward when the table top is turned over; each of the adjustable supports is combined with the bottom of the table leg in a screwing manner, so that the user can adjust the height by rotating the adjustable support.

[0010] The utility model discloses the advantage lies in, in the use state of the table top being flat, each of the rollers is collected, and the position of each of the rollers cannot be moved due to the rotation (non-rolling) of the roller, and the height of each of the adjustable supports can be adjusted to correspond to the uneven ground, so that the utility model will not shake even if the ground is uneven. When the utility model needs to be moved, each of the rollers is pushed out to the position protruding from the table leg by the turning action of the table top, so that each of the rollers can be used to facilitate the movement, and the utility model has the stability during use and the convenience during storage.

[0011] In order to clearly and fully disclose the present invention, preferred embodiments are listed and described in detail below. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A three-dimensional diagram of the utility model in use;

[0013] Figure 2 A three-dimensional diagram of the mobile state of the utility model;

[0014] Figure 3 for Figure 1 Front view of

[0015] Figure 4 for Figure 2 Front view of

[0016] Figure 5 This is a schematic diagram of the operation of the lifting wheel frame of the utility model (1);

[0017] Figure 6 This is a schematic diagram of the operation of the lifting wheel frame of the utility model (II);

[0018] Figure 7 Schematic diagram of the operation of the rotating frame of the utility model (1);

[0019] Figure 8 This is a schematic diagram of the operation of the rotating frame of the utility model (2).

[0020] Description of Reference Numerals

[0021] 1. Desktop;

[0022] 2. Table legs;

[0023] 21. Adjustable support pillars;

[0024] 22. Lifting wheel frame;

[0025] 23. Roller;

[0026] 24. Space for table legs;

[0027] 25. Rotation axis;

[0028] 26. Rotating hole;

[0029] 27. Locking slot;

[0030] 28. Connectors;

[0031] 29. Oblong hole;

[0032] 3. Beam;

[0033] 4. Rotating frame;

[0034] 41. Drive shaft;

[0035] 42. Locking housing space;

[0036] 5. Locking lever;

[0037] 51. Connecting rod;

[0038] 52. Reset spring;

[0039] 6. Linking rod. DETAILED DESCRIPTION

[0040] Please refer to Figures 1 to 5 , the drawings of the embodiments of the utility model are disclosed, and the folding table structure of the utility model is illustrated by the above-mentioned drawings, which comprises a tabletop 1, two table legs 2, a crossbeam 3 combined between the table legs 2 and two rotating frames 4, the two rotating frames 4 are combined at opposite sides of the bottom surface of the tabletop 1 respectively, and the rotating frame 4 is reversibly combined at the top end of each table leg 2 respectively, the bottom end of each table leg 2 is respectively provided with a plurality of adjustable supports 21, and the folding table structure is characterized in that each table leg 2 comprises a lifting wheel frame 22 respectively, the bottom end of each lifting wheel frame 22 is respectively provided with a plurality of rollers 23, and each lifting wheel frame 22 is connected to each rotating frame 4 respectively, so that when the tabletop 1 and each rotating frame 4 are turned from the horizontal direction to the vertical direction, each lifting wheel frame 22 moves downward to make each roller 23 protrude out of each table leg 2. In the embodiment, each adjustable support 21 is combined with the bottom of each table leg 2 in the form of screwing, so that the user adjusts the height of each adjustable support 21 by rotating each adjustable support 21, and locking each adjustable support 21 into each table leg 2 can reduce the height, and turning each adjustable support 21 out of each table leg 2 can increase the height.

[0041] Figures 4 to 8It can be seen that in this embodiment, each table leg 2 has a table leg accommodating space 24 inside to accommodate each lifting wheel frame 22. Each lifting wheel frame 22 is roughly in the shape of an inverted T. The top of each table leg 2 is respectively provided with a rotating shaft 25 facing inward (the side opposite to the two table legs 2 is the inner side). Each rotating frame 4 is respectively reversibly sleeved on the outside of each rotating shaft 25, so that each rotating frame 4 is respectively located on the inner side of each table leg 2. The crossbeam 3 is combined between the rotating shafts 25. The crossbeam 3 fixes each table leg 2 and does not rotate. The top of each table leg 2 is located on one side of each rotating shaft 25 and has a rotating hole. 26, that is, each rotating shaft 25 reserves space for a side rotation hole 26. Each rotating frame 4 is provided with a drive shaft 41 protruding toward each rotation hole 26. Each drive shaft 41 passes through the rotation hole 26 and extends into each table leg accommodating space 24. Each drive shaft 41 is connected to each lifting wheel frame 22. Each rotating frame 4 has a locking accommodating space 42 inside to accommodate a locking rod 5. Each rotating shaft 25 is surrounded by a plurality of locking grooves 27. Each locking rod 5 can be retractably engaged with one of the locking grooves 27 (i.e., the locking rod 5 can be retractably engaged with any of the locking grooves 27). In this embodiment, a linkage rod 6 is connected between each locking rod 5, so that the user can operate the linkage rod 6 to simultaneously move each locking rod 5 out of the locking groove 27, thereby rotating the table top 1 and each rotating frame 4.

[0042] In this embodiment, each rotation hole 26 extends along the circumference of each rotation shaft 25. Because each drive shaft 41 performs a circular motion when each rotating frame 4 rotates, the rotation holes 26 extending along the circumference ensure that the movement of each drive shaft 41 is not obstructed as the rotating frame 4 rotates. A connecting member 28 can be mounted on the top of each lifting wheel frame 22, which is sleeved on each drive shaft 41. This allows the movement of each drive shaft 41 to drive the movement of each lifting wheel frame 22 when each rotating frame 4 rotates. When each drive shaft 41 is moved downward by the rotation of the table top 1, it pushes each lifting wheel frame 22 downward to under each table leg 2 (in the moving state). When each drive shaft 41 is moved upward by the rotation of the table top 1, it pulls each lifting wheel frame 22 upward back into each table leg 2 (in the use state). Each connecting member 28 can be sleeved on each drive shaft 41 via a horizontally extending oblong hole 29, so that the circular movement of each drive shaft 41 can be smoothly converted into vertical movement of each lifting wheel frame 22.

[0043] The outer side of the top of each table leg 2 may have a decorative plate (not drawn) to cover the rotating hole 26, the drive shaft 41 and the connecting piece 28 to prevent the rotating drive shaft 41 from colliding with foreign objects; the decorative plate (not drawn) is omitted in the figures for convenience of explanation.

[0044] Figures 7 to 8The locking rods 5 are respectively connected to a reset spring 52, so that the locking rods 5 are preset to engage one of the locking slots 27. When the user releases the locking rods 5 and rotates them to another locking slot 27, the locking rods 5 are pushed into the other locking slot 27 by the reset spring 52. In the embodiment, the locking rods 5 are respectively connected to a plurality of connecting rods 51 in sequence, for example, three connecting rods 51 are connected in sequence to form the locking rod 5. The connecting rod 51 closest to the rotating shaft 25 is in the form of a hook and extends into the locking slot 27. The connecting rod 51 farthest from the rotating shaft 25 is connected to the reset spring 52 and the connecting rod 6. When the user pulls the connecting rod 6 away from the rotating shaft 25, the connecting rods 51 are sequentially driven and moved away from the rotating shaft 25, so that the connecting rod 51 closest to the rotating shaft 25 is disengaged from the locking slot 27, and the user can turn over the tabletop 1. When the tabletop 1 is turned over to the position shown in Figure 8 , the reset spring 52 pushes the connecting rods 51 towards the rotating shaft 25 (reset), and the connecting rod 51 closest to the rotating shaft 25 is pushed into the other locking slot 27. The driving shafts 41 and the locking rods 5 are respectively arranged on opposite sides of the rotating shaft 25, for example, the driving shafts 41 are arranged on the side of the rotating frame 4 facing downward when the tabletop 1 is turned over, and the locking rods 5 are arranged on the side of the rotating frame 4 facing upward when the tabletop 1 is turned over.

[0045] The advantage of the present application is that the rollers 23 are retracted when the tabletop 1 is in the flat use state, so that the rollers 23 do not move due to rotation (non-rolling), and the height of the adjustable support 21 can be adjusted to correspond to uneven ground. Even if the ground is uneven, the present application will not shake. When the present application needs to be moved, the rollers 23 are pushed downward to a position protruding from the table legs 2 (bottom end) by the turning action of the tabletop 1, so that the rollers 23 can be used to facilitate movement, and the stability during use and the convenience during storage are combined.

[0046] However, the above description is only a preferred embodiment of the present application, and cannot be used to limit the scope of the present application. Any changes and modifications obvious to those skilled in the art should be considered as not deviating from the essential content of the present application.

Claims

1. A folding table structure comprising a tabletop, two table legs, a crossbeam coupled between the two table legs, and two rotating frames, wherein the two rotating frames are coupled to opposite sides of the bottom surface of the tabletop and are reversibly coupled to the top of each table leg, and the bottom of each table leg has a plurality of adjustable supports, characterized in that: Each table leg includes a lifting wheel frame inside, and a plurality of rollers are provided at the bottom end of each lifting wheel frame. Each lifting wheel frame is connected to each rotating frame. When the table top and each rotating frame are flipped from the horizontal direction to the vertical direction, each lifting wheel frame moves downward, and each roller protrudes from the outside of each table leg.

2. The foldable table structure according to claim 1, wherein: Each table leg has a table leg accommodating space inside for accommodating each lifting wheel frame, and a rotating shaft is protruded inward at the top of each table leg, and each rotating frame can be flipped and sleeved on the outside of each rotating shaft. The crossbeam is combined between the rotating shafts, and the top of each table leg has a rotating hole on one side of each rotating shaft, and each rotating frame has a driving shaft protruding toward each rotating hole. Each driving shaft passes through the rotating hole and extends to each table leg accommodating space, and each driving shaft is connected to each lifting wheel frame. A locking accommodating space is provided inside each rotating frame, and a locking rod is provided in the locking accommodating space. Each rotating shaft is respectively surrounded by a plurality of locking grooves, and each locking rod can telescopically engage one of the locking grooves.

3. The foldable table structure according to claim 2, wherein: A connecting rod is connected between each locking rod, and each locking rod is connected to a return spring for locking each locking rod in one of the locking grooves. Each drive shaft and each locking rod are respectively arranged on opposite sides of each rotating shaft, and each adjustable support is respectively connected to the bottom of each table leg in a screw lock manner.

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