Folding desk structure

Abstract

To provide a folding desk structure which can be easily moved, is stable when in use, and is convenient when stored. [Solution] The folding desk structure comprises a tabletop 1, two legs 2, a cross beam 3 connected between each leg, and two rotating frames 4. A rotating frame is connected to each side of the bottom surface of the tabletop. The rotating frames are rotatably connected to the top ends of the legs. A plurality of adjustable columns 21 are provided at the bottom ends of the legs. Each leg includes a lifting frame inside. A plurality of casters 23 are provided at the bottom ends of the lifting frames, and the lifting frames are connected to the rotating frames. When the tabletop and the rotating frames are rotated from the horizontal direction to the vertical direction, the lifting frame moves downward and the casters protrude outward from the legs.

Description

[Technical field]

[0001] The present invention relates to a folding desk, and more particularly to a folding desk structure in which casters are stored inside the legs. [Background technology]

[0002] Conventionally, in order to make effective use of space, instead of fixed desks, foldable desks that can be folded and stored when not in use to reduce the space they occupy have often been used. Such folding desks are grounded by a number of casters provided under the legs of the desk so that they can be easily moved. In addition, in order to make it easy to move, the casters are designed to be horizontally rotatable 360 ​​degrees, and it was common to move the desk to a fixed position and then lock the casters to prevent them from rotating. However, the casters still rotate slightly, so that the desk may be moved unintentionally without being fixed.

[0003] Furthermore, conventional casters did not have a mechanism for adjusting the height, so if the floor or ground was not flat, there was a risk that part of the caster would not touch the ground, causing the desk to shake.

[0004] The inventor of the present invention has conducted extensive research in light of the shortcomings of the conventional folding desks described above, and as a result has completed a folding desk structure that can improve upon the problems of the conventional technology. Summary of the Invention [Problem to be solved by the invention]

[0005] The main object of the present invention is to provide a folding desk structure in which, when the tabletop is in a flat, in-use state, the casters are stored and the adjustable supports are grounded to accommodate uneven floors or ground, and when the tabletop is rotated and in a mobile state, the rotation of the tabletop pushes the casters downwards, protruding outward from the legs and grounding them, allowing the tabletop to be easily moved. [Means for solving the problem]

[0006] In order to solve the above problems, according to a first form of the present invention, there is provided a folding desk structure comprising a tabletop, two legs, a cross beam connected between each leg, and two rotating frames, the rotating frames being connected to both sides of the bottom surface of the tabletop, the rotating frames being rotatably connected to the top ends of the legs, the bottom ends of the legs being provided with a plurality of adjustable columns, the legs each including a lifting frame, the bottom ends of the lifting frames each being provided with a plurality of casters, the lifting frames each being connected to the rotating frames, and when the tabletop and the rotating frames are rotated from the horizontal direction to the vertical direction, the lifting frame moves downward and the casters protrude outward from the legs.

[0007] Preferably, the legs each have a leg accommodating space for accommodating the lifting frame, a rotating shaft protrudes inward from the top end of the leg, the rotating frame is rotatably fitted around the outside of the rotating shaft, and the cross beam is connected between the rotating shafts. A rotation hole is formed on one side of the top end of the leg at a position corresponding to the rotation shaft, and a drive shaft protrudes from the rotating frame toward the rotation hole, the drive shaft is inserted into the rotation hole and extends to each leg accommodating space, and the drive shaft is connected to the lifting frame. Preferably, the rotating frame has a lock accommodating space for accommodating a lock rod, and a plurality of lock grooves are provided around the rotating shaft, and the lock rod is engaged with one of the lock grooves in an extendable manner.

[0008] It is preferable that an interlocking rod is connected between the lock rods, the lock rods are respectively connected to return springs, and the lock rods are engaged with one of the lock grooves, the drive shaft and the lock rod are respectively provided on both sides of the rotating shaft, and the adjustable support posts are respectively connected to the bottoms of the legs by a screwing method. Effect of the Invention

[0009] When the folding desk structure of the present invention is in a state in which the tabletop is flat in use, the casters are stored to prevent the casters from moving due to their rotation, and the adjustable supports adjust the height at which the casters touch the ground to prevent the desk structure from shaking when it is adapted to an uneven floor or ground. When the folding desk structure of the present invention is moved, when the tabletop is rotated to a moving state, the rotating action of the tabletop pushes the casters downward and outward from the legs to touch the ground, making it easy to move, thereby making it highly stable when in use and convenient when stored. [Brief description of the drawings]

[0010] [Figure 1] 1 is a perspective view showing a folding desk structure according to an embodiment of the present invention in use; FIG. [Diagram 2] FIG. 2 is a perspective view showing a moving state of the folding desk structure according to the embodiment of the present invention; [Diagram 3] FIG. 2 is a front view of FIG. [Figure 4] FIG. 3 is a front view of FIG. 2. [Diagram 5] FIG. 1 is an explanatory diagram showing the operation of the lifting frame of the folding desk structure according to one embodiment of the present invention; [Figure 6] FIG. 2 is an explanatory diagram showing the operation of the lifting frame of the folding desk structure according to an embodiment of the present invention. [Figure 7] FIG. 1 is an explanatory diagram showing the operation of the rotating frame of the folding desk structure according to one embodiment of the present invention; [Figure 8] FIG. 2 is an explanatory diagram showing the operation of the rotating frame of the folding desk structure according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Please refer to FIG. 1 to FIG. 4. As shown in FIG. 1 to FIG. 4, the folding desk structure according to one embodiment of the present invention includes a tabletop 1, two legs 2, a cross beam 3 connected between the legs 2, and two rotating frames 4. The rotating frames 4 are connected to both sides of the bottom surface of the tabletop 1. The rotating frames 4 are rotatably connected to the top ends of the legs 2. The bottom ends of the legs 2 are provided with a plurality of adjustable columns 21. The inside of each leg 2 includes a lifting frame 22. The bottom ends of the lifting frames 22 are provided with a plurality of casters 23. When the lifting frames 22 are connected to the rotating frames 4 and the tabletop 1 and the rotating frames 4 are rotated from the horizontal direction to the vertical direction, the lifting frames 22 move downward and the casters 23 protrude outward from the legs 2. In this embodiment, each adjustable support 21 is connected to the bottom of each leg 2 by a screw-fastening method, and the user can adjust the height of each adjustable support 21 by rotating each adjustable support 21, screwing each adjustable support 21 into each leg 2 to lower the height, and rotating each adjustable support 21 out to raise the height of the leg 2.

[0012] Please refer to FIG. 4 to FIG. 8. As shown in FIG. 4 to FIG. 8, each leg 2 has a leg housing space 24 for housing each lifting frame 22. Each lifting frame 22 is formed in an inverted T-shape. A rotating shaft 25 is protruding inward from the top end of each leg 2. Each rotating frame 4 is rotatably fitted to the outside of each rotating shaft 25, and each rotating frame 4 is positioned inside each leg 2, and a cross beam 3 is connected between each rotating shaft 25, and the cross beam 3 is fixed to each leg 2 to prevent rotation. A rotating hole 26 is formed at a position corresponding to each rotating shaft 25 on one side of the top end of each leg 2, that is, each rotating shaft 25 has a spare space in the rotating hole 26 on the side. A driving shaft 41 protruding toward each rotating hole 26 is provided on each rotating frame 4. Each driving shaft 41 is inserted into each rotating hole 26 and extends to each leg housing space 24. Each drive shaft 41 is connected to each lift frame 22. A lock accommodating space 42 for accommodating a lock rod 5 is formed inside each rotating frame 4. A plurality of lock grooves 27 are provided around each rotating shaft 25. Each lock rod 5 is engaged with one of the lock grooves 27 so that it can be extended and retracted. In this embodiment, an interlocking rod 6 is connected between each lock rod 5, and when a user operates the interlocking rod 6 and simultaneously moves each lock rod 5 out of the lock groove 27, the tabletop 1 and each rotating frame 4 can be rotated.

[0013] In this embodiment, each rotation hole 26 is formed along the circumferential direction of each rotation shaft 25. When each rotation frame 4 is rotated, each drive shaft 41 performs a circumferential motion, and each rotation hole 26 formed along the circumferential direction prevents each drive shaft 41 from being hindered in the operation accompanying the rotation of each rotation frame 4. The top of each lifting frame 22 has a connector 28 fitted to each drive shaft 41, and when each rotation frame 4 is rotated and each drive shaft 41 moves, each lifting frame 22 also moves. When each drive shaft 41 is moved downward by the rotation of the tabletop 1, it pushes each lifting frame 22 until it reaches the bottom of the leg 2 (moving state), and when each drive shaft 41 moves upward by the rotation of the tabletop 1, it pulls each lifting frame 22 upward and returns it to the inside of the leg 2 (use state). Each connector 28 has an oblong hole 29 formed long in the horizontal direction, into which each drive shaft 41 is fitted, so that the circumferential movement of each drive shaft 41 can be smoothly converted into vertical movement of each lifting frame 22.

[0014] The rotation hole 26, drive shaft 41, and connector 28 are covered with a decorative plate (not shown) provided on the outer top end of each leg 2 to prevent the rotating drive shaft 41 from colliding with foreign objects. For ease of explanation, the decorative plate (not shown) is omitted in the drawings.

[0015] Please refer to Figures 7 and 8. As shown in Figures 7 and 8, each lock rod 5 is connected to a return spring 52, and each lock rod 5 is engaged with one of the lock grooves 27. When a user releases each lock rod 5 and rotates it to a positioning position, each lock rod 5 is pushed into the other lock groove 27 by the return spring 52. Each lock rod 5 in this embodiment is formed by sequentially pivoting a plurality of connecting rods 51. For example, the lock rod 5 is formed by sequentially pivoting three connecting rods 51. The connecting rods 51 closest to the rotating shaft 25 are formed into a hook shape and extend to the locking groove 27, and the rotating shaft 25 furthest from each connecting rod 51 is connected to the return spring 52 and the interlocking rod 6, and when the user pulls the interlocking rod 6 in a direction away from the rotating shaft 25, each connecting rod 51 is sequentially driven and moves away from the rotating shaft 25, and when the connecting rods 51 closest to the rotating shaft 25 are removed from the locking groove 27, the user can rotate the tabletop 1. When the tabletop 1 is rotated to the position shown in Figure 8, the return spring 52 moves each connecting rod 51 closer to the rotating shaft 25, and pushes the connecting rods 51 closest to the rotating shaft 25 into the other locking groove 27. Each driving shaft 41 and each locking rod 5 are provided on both sides of each rotating shaft 25. For example, each drive shaft 41 is provided on one side of the rotating frame 4 that faces downward when the tabletop 1 is rotated, and each lock rod 5 is provided on one side of the rotating frame 4 that faces upward when the tabletop 1 is rotated.

[0016] As can be seen from the above, in the folding desk structure according to the present invention, when the tabletop 1 is in a flat state, the casters 23 can be stored to prevent the casters 23 from rotating and moving, and the ground height of each adjustable support 21 can be adjusted to accommodate an uneven floor or ground, so that the present invention will not shake even if the floor or ground is not flat. In addition, when moving the present invention, the casters 23 are pushed downward by the rotation of the tabletop 1, protruding outward from each leg 2, and each caster 23 can be grounded to move easily, so that it is highly stable when used and highly convenient when stored.

[0017] The preferred embodiments of the present invention have been disclosed above so that those skilled in the art can understand, but they are not intended to limit the present invention. Various changes and modifications can be made within the scope of the present invention. Therefore, the scope of the utility model registration claims of the present invention should be broadly interpreted to include such changes and modifications. [Explanation of symbols]

[0018] 1. Top plate 2 legs 3 crossbeam 4 Rotating Frame 5 Locking rod 6 interlocking rod 21 Adjustable struts 22 Lifting frame 23 Caster 24 Leg storage space 25 Rotational Axis 26 Rotation hole 27 Lock tank 28 Connectors 29 Oval Hole 41 Drive shaft 42 Lock storage space 51 continuation 52 Return spring

Claims

1. A folding desk structure comprising a tabletop, two legs, a cross beam connected between each of the legs, and two rotating frames, The rotating frames are respectively connected to both sides of the bottom surface of the tabletop, and the rotating frames are respectively rotatably connected to the top ends of the legs, and the bottom ends of the legs are respectively provided with a plurality of adjustable columns; Each of the legs includes a lifting frame therein, A folding desk structure characterized in that a plurality of casters are provided on the bottom ends of the lifting frames, the lifting frames are connected to the rotating frames, and when the tabletop and the rotating frame are rotated from the horizontal direction to the vertical direction, the lifting frame moves downward and the casters protrude outward from the legs.

2. The legs each have a leg housing space for housing the lift frame therein, The folding desk structure according to claim 1, characterized in that a rotating shaft is protruding inward from the top end of each of the legs, the rotating frame is rotatably fitted around the outside of the rotating shaft, and the cross beam is connected between the rotating shafts, a rotating hole is formed on one side of the top end of each of the legs at a position corresponding to the rotating shaft, and a drive shaft is protruding from the rotating frame toward the rotation hole, the drive shaft is inserted into the rotation hole and extends to each of the leg accommodating spaces, the drive shaft is connected to the lifting frame, a lock accommodating space is formed inside the rotating frame to accommodate a lock rod, a plurality of lock grooves are provided around the rotating shaft, and the lock rod is engaged with one of the lock grooves in an extendable manner.

3. A link rod is connected between the lock rods, The lock rods are respectively connected to return springs, and the lock rods are engaged with one of the lock grooves; The drive shaft and the lock rod are provided on both sides of the rotation shaft, The folding desk structure according to claim 2, wherein the adjustable support rods are respectively connected to the bottom of the legs by a screw fastening method.

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