CN211483430U - Dining table with changeable table top - Google Patents

Abstract

The utility model relates to a dining table with a changeable table top, which comprises a table top plate, table legs, a table frame and a hollow mechanism which is rotated upwards, wherein the table top plate comprises a first table top plate and a second table top plate, and the two second table top plates are respectively positioned at two sides of the first table top plate and are fixedly connected with the table legs; the first table top board can do lifting and rotating motion under the action of the lifting and rotating hollow mechanism, and the first table top board and the second table top board are combined to form a complete round table top; at least 3 table legs are arranged, and the second table panel is fixed at the upper ends of the table legs; the table frame is fixed on the lower surface of the first table panel and comprises 2 fixing strips, the two ends of each fixing strip are fixed on the lower surface of the first table panel, the middle of each fixing strip is suspended in the air, and the first table panel is positioned above the hollow mechanism which ascends and rotates; the hollow mechanism which ascends and rotates is fixed on the two fixing strips of the table frame. Simple and convenient operation, firm structure and comfort.

Description

Dining table with changeable table top

Technical Field

The utility model relates to the field of furniture, especially, relate to a dining table that desktop can change.

Background

The dining table is the necessary furniture of every family, in current furniture, has a relatively popular dining table: when people eat less food at ordinary times, the dining table is a dining table which is rectangular as a whole, wherein one pair of opposite sides are straight sides, and the other pair of opposite sides are arc sides; when more people eat, the supplementary blocks positioned at two sides of two straight edges can be beaten up to form a complete round table, and the round table in the prior art saves space, but has the following defects:

(1) the operation is relatively complicated. Two persons are required to operate simultaneously, or one person operates twice with the same action at two different positions;

(2) after the rectangular table is changed into a round table, the wooden structure below the supplement block can easily obstruct the legs of a person to form interference, and the comfort of the person is seriously influenced;

(3) the dining table in the prior art is easy to have unstable table feet after being used for a long time;

(4) the existing variable dining table has no turnplate, and the turnplate is needed to be additionally added even if the turnplate is arranged, and the table is put on when needed and is moved off when not needed, which is very troublesome.

SUMMERY OF THE UTILITY MODEL

Aiming at the problem that no device capable of meeting the requirements exists in the prior art, the utility model provides a dining table with a variable table top, which comprises a table top plate, table legs, a table frame and a hollow mechanism rotating upwards, wherein the table top plate comprises a first table top plate and a second table top plate, and the two table top plates are respectively positioned at two sides of the first table top plate and fixedly connected with the table legs; the first table top board can do lifting and rotating motion under the action of the lifting and rotating hollow mechanism, and the first table top board and the second table top board are combined to form a complete round table top; at least 3 table legs are arranged, and the second table panel is fixed at the upper ends of the table legs; the table frame is fixed on the lower surface of the first table panel and comprises 2 fixing strips, the two ends of each fixing strip are fixed on the lower surface of the first table panel, the middle of each fixing strip is suspended in the air, and the first table panel is positioned above the hollow mechanism which ascends and rotates; the hollow mechanism which ascends and rotates is fixed on the two fixing strips of the table frame.

Preferably, the table frame further comprises four strip-shaped connecting plates fixedly connected with the four table legs, the four strip-shaped connecting plates enclose a square frame, and the table legs are positioned on 4 legs of the square frame; reinforcing blocks are arranged at the positions of the table legs, and two ends of two adjacent strip-shaped connecting plates are fixedly connected; a bearing strip is respectively arranged between the strip-shaped connecting plates on the two long sides and the first table top plate.

Preferably, a turntable is arranged above the first table board, a rotating rail is arranged below the turntable, the rotating rail is supported by at least 3 supporting columns, and the upper ends of the supporting columns are fixedly connected with the rotating rail through screws; the lower end of the supporting column is suspended and not fixed and is supported by a hollow mechanism which rotates upwards; the rotary disc is in a cake shape or a ring shape.

Preferably, the lifting and rotating hollow mechanism comprises an outer lifting turntable, a lifting mechanism, a rotating device and a spiral guide groove base, wherein the lifting mechanism is movably connected with the outer lifting turntable and the spiral guide groove base, and the outer lifting turntable is used for pushing the rotating device upwards and is movably connected with the rotating device; the lifting mechanism directly acts on the external lifting turntable to indirectly realize the lifting of the rotating device; the outer lifting turntable is positioned on one side of the spiral guide groove base; the rotating device comprises an inner lifting turntable; the upper cylinder opening of the outer lifting turntable extends outwards to form an annular horizontal platform vertical to the vertical direction; and a handle is also arranged and is fixedly connected with the outer lifting turntable.

Preferably, the lifting mechanism is provided with at least 3 sets of guide wheel assemblies, each set including but not limited to bearings, bolts, nuts; the bolt is fixed on the cylinder wall of the outer lifting turntable, and the bearing is fixed on the bolt; the wall of the spiral guide groove base is at least provided with 3 spiral guide grooves, the bearing is positioned in the spiral guide grooves, the width of each spiral guide groove is larger than the outer diameter of the bearing, the bearing moves in the spiral guide grooves by rotating the outer lifting turntable, the spiral guide grooves are long-strip-shaped, and two ends of each spiral guide groove have certain height difference in the vertical direction; the lifting height of the mechanism can be changed by changing the helix angle and the helix length of the helical guide groove; the initial position of the bearing is positioned at the lowest point of the spiral guide groove; the outer lifting turntable also rises together with the bearing, and after the bearing rises to the highest point of the spiral guide groove and is located on a bearing seat at the upper end part of the spiral guide groove, the outer lifting turntable jacks the rotating device to the highest point and is supported by the outer lifting turntable; the rotating device rotates to drive the first table top plate to rotate.

Preferably, the spiral guide groove is in a V shape, and the initial position of the bearing is at the lowest point of the V-shaped spiral guide groove; or the spiral guide groove is in an inverted V shape, and the initial position of the bearing is at the highest point of the inverted V-shaped spiral guide groove; the outer lifting turntable can also rotate left and right, the different spiral angles of the two groove sides of the V-shaped spiral guide groove or/and the inverted V-shaped spiral guide groove can be unequal, and the spiral lengths of the two different groove sides can also be unequal.

Preferably, the rotating device comprises a first roller and an inner lifting turntable, and an upper cylinder opening of the inner lifting turntable extends outwards to form an annular horizontal platform vertical to the vertical direction; the lower end surface of the annular horizontal platform of the inner lifting turntable is in direct contact with the outer lifting turntable and is used for supporting the inner lifting turntable; the wall of the spiral guide groove base is at least embedded with 3 rollers, and the first roller is in contact with the outer wall of the inner lifting turntable and used for guiding the inner lifting turntable to rotate and ascend.

Preferably, a circular ring is arranged between the horizontal planes of the inner lifting turntable and the outer lifting turntable, and the circular ring can be fixed on the outer lifting turntable or the inner lifting turntable; the circular ring can be in sliding contact with the inner lifting turntable and can also be in rolling contact with the inner lifting turntable, and when the circular ring is in rolling contact with the inner lifting turntable, at least 3 first balls or second rollers are uniformly arranged on the circumference of the circular ring and are used for being in rolling contact with the lower surface of the annular horizontal platform of the extension section of the inner lifting turntable.

Preferably, the outer lifting turntable is in contact with the spiral guide groove base, the outer lifting turntable is positioned below the rotating device and used for supporting the rotating device, and at least 3 groups of first balls or second rollers or a combination of the first balls and the second rollers are uniformly embedded on the circumference of the cylinder wall of the spiral guide groove base; the inner and outer sides of the first ball or the second roller are respectively provided with an inner lifting turntable and a barrel top frame of the rotating device; the outer lifting turntable is divided into an upper part and a lower part, the lower part is fixedly connected with the spiral guide groove base, the upper part is contacted with the rotating device and is used for supporting the inner lifting turntable of the rotating device, and the upper part and the lower part of the outer lifting turntable cylinder in the circumferential direction at least comprise 3 groups of lifting structures.

Preferably, the lifting structure is divided into a concave-convex section and supporting sections positioned at the left side and the right side of the concave-convex section; when the upper part of the outer lifting turntable is a convex section, the lower part corresponding to the convex section is a concave section; when the upper part of the outer lifting turntable is a concave section, the lower part corresponding to the concave section is a convex section which is matched with the concave section, the left side and the right side of the concave section are supporting sections which are positioned at the top end of the concave section and the bottom end of the convex section and used for supporting the inner lifting turntable jacked up by the outer lifting turntable; each protruding section of outer lifting turntable all has a tip, tip in outer lifting turntable upper portion rotation in-process with the terminal surface sliding contact or the rolling contact of outer lifting turntable's lower part.

The utility model relates to a cavity mechanism of rotatory that rises's beneficial effect is:

(1) the waist-shaped table can be changed into the round table by installing the lifting and rotating hollow mechanism on the table frame and operating the handle on the lifting and rotating hollow mechanism to lift the first table panel, then rotating the first table panel and then dropping the first table panel to the same horizontal position as the second table panel, and the operation is simple and convenient.

(2) And the height of the table frame and the table panel in the vertical direction is reduced due to the additionally arranged lifting and rotating hollow mechanism, so that a higher extending space is reserved for legs of diners, and the comfort level is improved.

(3) The table frame further comprises strip-shaped connecting plates fixedly connected with the table legs, the four strip-shaped connecting plates form a square frame in an enclosing mode, and the table legs are located at 4 corners of the square frame; the table leg is provided with a reinforcing block, and the reinforcing block fixedly connects two ends of two adjacent strip-shaped connecting plates. Through setting up the boss, strengthened first, two desktop boards and table foot, solved the dining table and used the easy unstable defect of producing table foot after long-time.

(4) The rotary table is arranged above the first table board, the rotary rail is arranged below the rotary table and is supported by at least 3 support columns, and the upper ends of the support columns are fixedly connected with the rotary rail through screws. The hollow mechanism which can rotate by rising can integrate the turntable with the table body, the turntable can be lifted when needed, the turntable can be sunk when not needed, and the turntable and the upper surface of the table top plate are on the same horizontal plane, so that the condition that the turntable in the traditional dining table is separated from the dining table independently and needs to be moved up and down frequently is avoided.

(5) Meanwhile, a turntable for placing a food dinner plate and an induction cooker which can be placed in the middle are integrated for eating a hot pot or heating food instantly;

(6) the wood product processing process has the disadvantages of large dust noise, environmental pollution and great harm to operators. A plurality of original wooden parts are replaced by metal accessories, so that the processing is simple, and the energy-saving and environment-friendly effects are achieved. Is reliable and durable.

(7) After the round table is changed into a waist-shaped table, the space of the restaurant is effectively saved. Thereby effectively solving the problem of small house type space utilization.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be described in more detail.

FIG. 1 is a top view of an embodiment of a variable top dining table of the present invention;

FIG. 2 is a top view of another embodiment of a variable top dining table of the present invention;

FIG. 3 is a cross-sectional view of a table top of the present invention showing a cross-sectional view of a table top of another embodiment of the table;

FIG. 4 is an enlarged view of a portion of a table top of the present invention, showing another embodiment of the table with a changeable top;

FIG. 5 is a cross-sectional view of a table with a changeable top according to an embodiment of the present invention;

FIG. 6 is a three-dimensional view of the utility model when the dining table with a changeable table top is turned over;

FIG. 7 is a front view of one embodiment of the hollow mechanism of the present invention for lifting and rotating the table top;

FIG. 8 is a sectional view taken along the line A-A of one embodiment of the pivoting mechanism of the convertible top dining table of the present invention;

FIG. 9 is a three-dimensional view of the inner lifting disk and ring of one embodiment of the hollow mechanism for upward rotation of a convertible table top of the present invention;

FIG. 10 is a three-dimensional view of the outer lifting turntable of one embodiment of the hollow mechanism of the present invention for lifting and rotating a convertible top dining table;

fig. 11 is a three-dimensional view of the inner lifting turntable and ring of one embodiment of the hollow mechanism for upward rotation of a convertible table top of the present invention.

Fig. 12 is a three-dimensional view of the spiral channel base of another embodiment of the hollow mechanism of the present invention for the variable top table for the table top to rotate upwardly.

Figure 13 is a three-dimensional view of a ring of another embodiment of the pivoting mechanism of the convertible top dining table of the present invention.

Fig. 14 is a three-dimensional view of another embodiment of the hollow mechanism of the present invention for lifting and rotating the table with a changeable table top.

Fig. 15 is a raised three-dimensional view of another embodiment of the rotatable top hollow mechanism of a convertible table top dining table of the present invention.

Fig. 16 is a raised front view of another embodiment of the rotatable mechanism of the present invention for lifting a convertible top dining table.

Fig. 17 is a sectional view of the table top of the present invention showing another embodiment of the hollow mechanism for upward rotation of the table with a changeable table top, taken along the line B-B after the lifting.

In the figure, 100-an outer lifting turntable; 101-a handle; 200-a lifting mechanism; 201-bolt; 202-a bearing; 203-spiral guide groove; 300-a rotation device; 301-a first roller; 302-inner lifting turntable; 303-a circular ring; 304-a first ball; 305-a second roller; 306-a second ball bearing; 400-a spiral guide groove base; 501-a first table top; 502-a second table top; 503-table legs; 504-fixation bar; 505-bar-shaped connection plates; 506-a reinforcing block; 507, a turntable; 508-shunting; 509-support column; 510-load bearing bars.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "disposed on," "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "fixedly attached" to another element or "fixedly coupled" to another element, it can be removably secured or non-removably secured to the other element. When an element is referred to as being "connected," rotationally coupled "to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment. As used in the following description, the terms "front," "back," "left," "right," "upper," "lower," "bottom," and "top" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 17, a dining table with a changeable table top comprises a table top, table legs 503, a table frame and a hollow mechanism for lifting and rotating, wherein the table top comprises a first table top 501 and a second table top 502, two of the second table tops 502 are respectively positioned at two sides of the first table top 501 and fixedly connected with the table legs 503; the first table top 501 can do lifting and rotating movement under the action of the hollow mechanism for lifting and rotating, and the first table top 501 and the second table top 502 are combined to form a complete round table top; at least 3 table legs are arranged, and the second table top board 502 is fixed at the upper end of the table legs 503; the table frame is fixed on the lower surface of the first table top board 501, and comprises 2 fixing strips 504, the two ends of each fixing strip are fixed on the lower surface of the first table top board 501, the middle of each fixing strip is suspended in the air, and the first table top board 501 is positioned above the hollow mechanism which ascends and rotates; the hollow mechanism of the lifting and rotating is fixed on two fixed bars 504 of the table frame.

In one embodiment, the table frame further comprises four bar-shaped connecting plates 505 fixedly connected with the four table legs 503, the four bar-shaped connecting plates 505 enclose a square frame, and the table legs 503 are positioned at 4 corners of the square frame; reinforcing blocks 506 are arranged at the positions of the table legs 503, and two ends of two adjacent strip-shaped connecting plates 505 are fixedly connected; a bearing bar 510 is disposed between the two long-side bar-shaped connecting plates 505 and the first table top board to prevent the first table top board 501 from being deformed due to hanging in the air for a long time.

In one embodiment, a turntable 507 is arranged above the first table top plate 501, a rotating rail 508 is arranged below the turntable 507, the rotating rail 508 is supported by at least 3 supporting columns 509, and the upper ends of the supporting columns 509 are fixedly connected with the rotating rail 508 through screws; the lower end of the supporting column 509 is suspended and not fixed, and is supported by a hollow mechanism which rotates in an ascending way; the rotary disc is in a cake shape or a ring shape.

As described above, one end of the support column 509 is in contact with the upper end surface of the spiral guide groove base 400 or the upper surface of the circular ring 303.

In one embodiment, the hollow mechanism for ascending and rotating comprises an outer lifting turntable 100, a lifting mechanism 200, a rotating device 300 and a spiral guide groove base 400, wherein the lifting mechanism 200 is movably connected with the outer lifting turntable 100 and the spiral guide groove base 400, the outer lifting turntable 100 is used for jacking the rotating device 300 upwards and is movably connected with the rotating device 300; the lifting mechanism 200 directly acts on the external lifting turntable 100 to indirectly realize the lifting of the rotating device 300; the outer lifting turntable 100 is positioned at one side of the spiral guide groove base 400; the rotary apparatus 300 includes an inner lifting turntable 302.

In one embodiment, the upper barrel mouth of the outer lifting turntable 100 extends outwards to form an annular horizontal platform perpendicular to the vertical direction; a handle 101 is also arranged and fixedly connected with the outer lifting turntable 100. Furthermore, two handles 101 are provided, and are fixedly connected to the outer side of the cylinder wall of the outer lifting turntable 100, and are oppositely arranged. In addition, a plurality of handles 101 can be arranged according to the requirement, and are respectively positioned on the circumference of the outer side of the cylinder wall of the outer lifting turntable 100, and the shape and the length of the operating handle 101 can be adjusted according to the requirement. The fixed connection mode of the handle 101 and the outer wall of the cylinder wall of the outer lifting turntable 100 can be welding, or can be a detachable fixed connection mode such as bolts.

In one embodiment, the lifting mechanism 200 is provided with 4 sets of 3 idler assemblies, each set including, but not limited to, bearings, bolts, nuts; each group comprises a bolt 201, a bearing 202 and a spiral guide groove 203; the bolt 201 is fixed on the cylinder wall of the outer lifting turntable 100, and the bearing 202 is fixed on the bolt 201; the wall of the spiral guide groove base 400 is provided with 4 spiral guide grooves 203, the bearing 202 is positioned in the spiral guide grooves 203, the width of the spiral guide grooves 203 is larger than the outer diameter of the bearing 202, the bearing 202 moves in the spiral guide grooves 203 by rotating the outer lifting turntable 100, the spiral guide grooves 203 are long and spirally ascend, and two ends of the spiral guide grooves 203 have a certain height difference in the vertical direction, namely are not at the same horizontal height, and the height difference determines the lifting height of the rotating device 300; the initial position of the bearing 202 is located at the lowest end of the spiral guide groove 203; the outer lifting rotor 100 is also raised together with the bearing 202, the bearing 202 is raised to the highest point of the spiral guide groove 203 and seated at the bearing seat at the upper end of the spiral guide groove 203, and the outer lifting rotor 100 pushes the rotating means 300 to the highest point and is supported by the outer lifting rotor 100.

In one embodiment, the spiral guide groove 203 is in a "V" shape, and the initial position of the bearing 202 is at the lowest point of the "V" shaped spiral guide groove 203; or the spiral guide groove 203 is in an inverted V shape, the initial position of the bearing is at the highest point of the inverted V-shaped spiral guide groove 203. This is an improved design, when the bearing 202 is at the initial position of the lowest point, the user can pull the handle 101 in two different directions, i.e. left and right, and can lift the rotating device 300 upwards.

In one embodiment, the rotating device 300 comprises a first roller 301, an inner lifting turntable 302, and an upper barrel opening of the inner lifting turntable 302 extends outwards to form an annular horizontal platform perpendicular to the vertical direction; the lower end surface of the annular horizontal platform of the inner lifting turntable 302 is directly contacted with the outer lifting turntable 100 and is used for supporting the inner lifting turntable 302; the wall of the spiral guide groove base 400 is embedded with 4 first rollers 301, and the first rollers 301 are in contact with the outer wall of the inner lifting turntable 302 and are used for guiding the inner lifting turntable 302 to rotate and lift.

As described above, more than 4 first rollers 301 may be inserted into the wall of the spiral groove base 400 as necessary.

In one embodiment, a ring 303, which may be a low friction ring, a roller ring or a ball ring, is disposed between the inner lifting rotor 302 and the outer lifting rotor 100, and the ring 303 may be fixed to the outer lifting rotor 100 or the inner lifting rotor 302. Further, in order to reduce the friction between the ring 303 and the inner lifting rotor 302, the ring 303 may be made of a material with a small friction coefficient.

In one embodiment, there are 8 sets of first balls 304 uniformly disposed around the circumference of the ring 303 for rolling contact with the lower surface of the annular horizontal platform of the extension of the inner lifting turntable 302. On one hand, the friction force can be reduced, and the rolling of the inner lifting turntable 302 is facilitated; on the other hand, the first ball 304 may generate an axial supporting force for the lifting rotor 302. In another embodiment, 4 first balls 304 may be replaced with 4 second rollers 305 in order to provide greater axial support to the inner lift rotor 302 while maintaining a low friction.

In one embodiment, the outer lifting rotor 100 is in contact with the screw guide groove base 400, the outer lifting rotor 100 is located below the rotating device 300 and is used for supporting the rotating device 300, and 4 groups of first rollers 301 or second balls 306 or a combination of the two are uniformly embedded on the circumference of the cylinder wall of the screw guide groove base 400; the inner and outer sides of the first roller 301 or the second ball 306 are respectively the inner lifting turntable 302 and the barrel top frame 100 of the rotating device 300; and the first roller 301 or the second ball 306 is respectively in rolling contact with the inner lifting turntable 302 of the rotating device 300 and the inner wall of the barrel top frame 100; furthermore, the wall of the spiral guide groove base 400 is embedded with 4 first rollers 301, and each first roller 301 can be replaced by a plurality of second balls 306, so that the inner lifting turntable 302 can move smoothly in the axial direction while ensuring smooth circumferential movement. The outer lifting turntable 100 has an upper portion and a lower portion, the lower portion is fixedly connected with the spiral guide groove base 400, the upper portion is in contact with the rotating device 300 and is used for supporting the inner lifting turntable 302 of the rotating device 300, and the upper portion and the lower portion of the outer lifting turntable 100 in the circumferential direction of the cylinder body at least comprise 3 groups of lifting structures.

In one embodiment, each group of lifting structures is divided into a concave-convex section and supporting sections positioned on the left side and the right side of the concave-convex section; when the upper part of the outer lifting turntable is a convex section, the lower part corresponding to the convex section is a concave section; when the upper part of the outer lifting turntable 100 is a concave section, the lower part corresponding to the concave section is a convex section, the concave section and the convex section are matched, the left side and the right side of the concave section are supporting sections, and the supporting sections are positioned at the top end of the concave section and the bottom end of the convex section and are used for supporting the inner lifting turntable 302 jacked up by the outer lifting turntable 100; each convex segment of the outer lifting turntable 100 has a tip portion, and the tip portion is in sliding contact or rolling contact with the end surface of the lower portion of the outer lifting turntable 100 during the rotation of the upper portion of the outer lifting turntable 100, as shown in fig. 14 to 17.

The specific working principle is introduced as follows: before the convertible table is changed, the bearing 202 is located between the lowest end and the highest end of the spiral guide groove 203, the first table top 501 is located above the two second table tops 502, and the two arc-shaped edges of the first table top 501 are overlapped with the two arc-shaped edges of the second table tops 502, so that the two second table tops 502 are hidden well. By pulling the handle 101 fixedly connected with the outer lifting turntable 100, the bearing 202 moves in the spiral guide groove 203 on the spiral guide groove base 400 and rises along with the spiral guide groove 203, the outer lifting turntable 100 pushes against the inner lifting turntable 302 to move upwards, and when the bearing 202 moves into a bearing seat at the upper end part of the spiral guide groove 203, the maximum height is reached; the inner lifting turntable 302 is rotated to rotate the first table top plate 501 by 90 degrees, when the first table top plate 501 is positioned above the gap between the two second table tops 502, the handle 101 is rotated again, and the first table top plate 501 descends under the action of the hollow mechanism of lifting and rotating, and finally descends to the same horizontal plane with the second table tops 502. Before and after the deformation, the height of the first table top board 501 is different, the height of the first table top board 501 after the first table top board 501 is changed into the round table is lower than that before the deformation, but in the process, the rotating disc 507 is always supported by the supporting columns 509, the lower ends of the supporting columns 509 are positioned on the upper end surface of the spiral guide groove base 400, when the first table top board 501 falls back to the same horizontal plane as the second table top board 502, the rotating disc 507 is exposed out of the first table top board 501 by a certain height, and under the action of the rotating rail 508, the rotating disc 507 can flexibly rotate, so that the purposes of 'round turning of the dining table and rotating of the rotating disc' are achieved, and dining is.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

Claims (10)

1. A dining table with a changeable table top is characterized by comprising two table top boards, two table legs, two table frames and a hollow mechanism which is lifted and rotated, wherein the two table top boards are respectively positioned at two sides of the first table top board and are fixedly connected with the table legs; the first table top board can do lifting and rotating motion under the action of the lifting and rotating hollow mechanism, and the first table top board and the second table top board are combined to form a complete round table top; at least 3 table legs are arranged, and the second table panel is fixed at the upper ends of the table legs; the table frame is fixed on the lower surface of the first table panel and comprises 2 fixing strips, the two ends of each fixing strip are fixed on the lower surface of the first table panel, the middle of each fixing strip is suspended in the air, and the first table panel is positioned above the hollow mechanism which ascends and rotates; the hollow mechanism which ascends and rotates is fixed on the two fixing strips of the table frame.

2. A convertible table as claimed in claim 1 wherein the frame further comprises four bar-shaped connecting panels fixedly connected to four legs, the four bar-shaped connecting panels defining a square frame, the legs being located on 4 legs of the square frame; reinforcing blocks are arranged at the positions of the table legs, and two ends of two adjacent strip-shaped connecting plates are fixedly connected; a bearing strip is respectively arranged between the strip-shaped connecting plates on the two long sides and the first table top plate.

3. A convertible table as claimed in claim 1 wherein a turntable is provided above the first table top plate, a track is provided below the turntable, the track being supported by at least 3 support posts, the upper ends of the support posts being fixedly connected to the track by screws; the lower end of the supporting column is suspended and not fixed and is supported by a hollow mechanism which rotates upwards; the rotary disc is in a cake shape or a ring shape.

4. A dining table with a changeable tabletop as claimed in claim 1, 2 or 3, wherein the hollow mechanism for ascending and rotating comprises an outer lifting turntable, a lifting mechanism, a rotating device, and a spiral guide groove base, wherein the lifting mechanism is movably connected with the outer lifting turntable and the spiral guide groove base, the outer lifting turntable is used for pushing the rotating device upwards and is movably connected with the rotating device; the lifting mechanism directly acts on the external lifting turntable to indirectly realize the lifting of the rotating device; the outer lifting turntable is positioned on one side of the spiral guide groove base; the rotating device comprises an inner lifting turntable; the upper cylinder opening of the outer lifting turntable extends outwards to form an annular horizontal platform vertical to the vertical direction; and a handle is also arranged and is fixedly connected with the outer lifting turntable.

5. A convertible table top dining table according to claim 4 wherein said lifting mechanism is provided with at least 3 sets of idler assemblies, each set including but not limited to bearings, bolts, nuts; the bolt is fixed on the cylinder wall of the outer lifting turntable, and the bearing is fixed on the bolt; the wall of the spiral guide groove base is at least provided with 3 spiral guide grooves, the bearing is positioned in the spiral guide grooves, the width of each spiral guide groove is larger than the outer diameter of the bearing, the bearing moves in the spiral guide grooves by rotating the outer lifting turntable, the spiral guide grooves are long-strip-shaped, and two ends of each spiral guide groove have certain height difference in the vertical direction; the lifting height of the mechanism can be changed by changing the helix angle and the helix length of the helical guide groove; the initial position of the bearing is positioned at the lowest point of the spiral guide groove; the outer lifting turntable also rises together with the bearing, and after the bearing rises to the highest point of the spiral guide groove and is located on a bearing seat at the upper end part of the spiral guide groove, the outer lifting turntable jacks the rotating device to the highest point and is supported by the outer lifting turntable; the rotating device rotates to drive the first table top plate to rotate.

6. A variable table top dining table as claimed in claim 5 wherein the spiral channels are "V" shaped and the initial position of the bearings is at the lowest point of the "V" shaped spiral channels; or the spiral guide groove is in an inverted V shape, and the initial position of the bearing is at the highest point of the inverted V-shaped spiral guide groove; the outer lifting turntable can also rotate left and right, the different spiral angles of the two groove sides of the V-shaped spiral guide groove or/and the inverted V-shaped spiral guide groove can be unequal, and the spiral lengths of the two different groove sides can also be unequal.

7. The convertible table of claim 4, wherein the rotating means comprises a first roller, an inner lifting turntable, an upper body opening of the inner lifting turntable extending outwardly to form an annular horizontal platform perpendicular to the vertical direction; the lower end surface of the annular horizontal platform of the inner lifting turntable is in direct contact with the outer lifting turntable and is used for supporting the inner lifting turntable; the wall of the spiral guide groove base is at least embedded with 3 rollers, and the first roller is in contact with the outer wall of the inner lifting turntable and used for guiding the inner lifting turntable to rotate and ascend.

8. A variable table top dining table as claimed in claim 7 wherein a ring is provided between the horizontal surfaces of the inner and outer lifting turntable, said ring being fixed to either the outer lifting turntable or the inner lifting turntable; the circular ring can be in sliding contact with the inner lifting turntable and can also be in rolling contact with the inner lifting turntable, and when the circular ring is in rolling contact with the inner lifting turntable, at least 3 first balls or second rollers are uniformly arranged on the circumference of the circular ring and are used for being in rolling contact with the lower surface of the annular horizontal platform of the extension section of the inner lifting turntable.

9. The dining table as claimed in claim 4, wherein the outer lifting turntable is in contact with the screw guide base, the outer lifting turntable is located below the rotating device for supporting the rotating device, and at least 3 sets of first balls or second rollers or a combination thereof are uniformly embedded on the circumference of the wall of the screw guide base; the inner and outer sides of the first ball or the second roller are respectively provided with an inner lifting turntable and a barrel top frame of the rotating device; the outer lifting turntable is divided into an upper part and a lower part, the lower part is fixedly connected with the spiral guide groove base, the upper part is contacted with the rotating device and is used for supporting the inner lifting turntable of the rotating device, and the upper part and the lower part of the outer lifting turntable cylinder in the circumferential direction at least comprise 3 groups of lifting structures.

10. The convertible table as claimed in claim 9, wherein the lifting structure is divided into a concave-convex section and supporting sections located at left and right sides of the concave-convex section; when the upper part of the outer lifting turntable is a convex section, the lower part corresponding to the convex section is a concave section; when the upper part of the outer lifting turntable is a concave section, the lower part corresponding to the concave section is a convex section which is matched with the concave section, the left side and the right side of the concave section are supporting sections which are positioned at the top end of the concave section and the bottom end of the convex section and used for supporting the inner lifting turntable jacked up by the outer lifting turntable; each protruding section of outer lifting turntable all has a tip, tip in outer lifting turntable upper portion rotation in-process with the terminal surface sliding contact or the rolling contact of outer lifting turntable's lower part.

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