CN107048696B - Height-adjustable multifunctional table - Google Patents

Abstract

A multifunctional table with adjustable height comprises a table top, two groups of mounting clamping seats and two groups of supporting frames which are hinged in a crossed manner; the desktop comprises a main desktop, a turnover desktop and a turnover regulator for connecting the main desktop and the turnover desktop; the mounting clamping seats comprise at least one limiting groove and a limiting half groove, and the two groups of mounting clamping seats are symmetrically arranged and fixedly connected to one side of the mounting surface of the main desktop; the supporting frame comprises a connecting clamping rod, a supporting rod and a supporting base with a supporting plane; the connecting clamping rod can be selectively arranged in the limiting groove or the limiting half groove or can be detachably separated from the mounting clamping seat. The height of the desk is adjusted by installing the desktop and the desk legs in multiple steps, the stability of the desk is improved, the desk legs are detachable, the portability of the desk is improved, the turnover regulator is improved, the turnover desktop can be adjusted in multiple angles, and more using functions of the desktop are expanded.

Description

A height-adjustable multifunctional table

technical field

The invention relates to the field of living tables, in particular to a height-adjustable multifunctional table.

Background technique

Desks are very commonly used daily necessities in our daily life, but the existing desks have a single function and cannot meet the increasing needs of users. Most of the connection methods between the existing table legs and the table top are fixed connections, and the adjustment of the height of the table top is mainly based on the expansion and contraction of the table legs. The structure is complex, the adjustment process is cumbersome, and the stability of the table is not high; The extension methods of some table tops are mainly divided into two types: pull-out type and flip-up type. Either way, the structure is more complicated and the adjustment process is more cumbersome. In addition, the extension table top can only be adjusted to the flush position with the main table top. Flip up or adjust multiple angles.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a height-adjustable multi-functional table. The present invention adjusts the height by means of multi-stage installation of the table top and table legs, and optimizes the stability of the table. The table legs The detachability improves the portability of the table at the same time, and through the improvement of the flip adjuster, the flip table can be adjusted at multiple angles, expanding more functions of the table.

The specific technical solution of the present invention is as follows: a height-adjustable multifunctional table, including a tabletop, two sets of mounting brackets, and two sets of cross-hinged support frames;

The desktop includes a main desktop, an overturned desktop, and an overturn regulator for connecting the main desktop and the overturned desktop;

The installation card seat includes at least one limit groove and a limit half groove, and two sets of the installation card seats are symmetrically arranged and fixed on one side of the installation surface of the main desktop;

The support frame includes a connecting rod, a support rod, and a support base with a support plane;

The connecting snap-in rod can be selectively installed in the limiting groove or the limiting half-groove, or can be detachably separated from the mounting bracket.

Thus, the support frame is selectively installed in the limiting groove or the limiting half groove to adjust the height of the desktop.

As a preference of the present invention, the connecting rod is a cylinder, and the supporting rod is a cubic slender rod with the same length; one end of the two supporting rods is respectively vertically connected to two ends of one of the connecting rods. end;

A first hinge hole is provided at the same distance between the support rod and the connecting snap-in rod, and a second hinge hole is provided at the opposite end of the support rod to the connection snap-in rod. The hole is parallel to the axial direction of the second hinged hole, and parallel to the axes of the cylinders of the two connecting rods;

The two sets of support frames are cross-hinged at the first hinge holes, and the support bases are hinged at the second hinge holes;

The axes of the cylinders of the two connecting rods are parallel to form a plane I. No matter how the two sets of cross-hinged support frames rotate, the support planes of the four support bases can be adjusted to a coplanar plane II. I is always parallel to said plane II.

As a result, the connecting snap-in rod is installed on the back plane I of the mounting bracket and is parallel to the main desktop, so the plane II formed by the supporting plane of the supporting base is parallel to the main desktop, and the supporting plane of the supporting base is in contact with the ground, so The main table top is parallel to the ground.

As a preference of the present invention, the limiting groove includes a circular arc portion and a transition opening, the lower side of the transition opening is tangent to the circular arc portion, and the upper side of the transition opening is tangent to the circular arc portion Intersect to form a card angle, the upper side and the lower side of the transition opening form an angle of opening outward, and the opening directions of the transition opening are all facing the other set of the mounting brackets;

The limiting half-groove includes a circular arc portion and a side portion, the angle between the side portion and the main table top is facing the other set of mounting brackets, and the side portion of the limiting half-groove The included angle with the main table top is smaller than the included angle between the lower side of the limiting slot and the main table top;

The diameter of the cylinder connecting the snap-in rod is smaller than the diameter of the circular arc portion of the limiting groove and the circular arc portion of the limiting half groove, greater than or equal to the minimum distance between the transition openings and smaller than the circular arc portion of the limiting groove. The maximum spacing of transition openings is stated.

Therefore, when the connecting snap-in rod is snapped into the arc portion, it needs to overcome the interference force provided by the minimum distance between the transition openings. Also, the interference force and the snap formed by the intersection of the upper side and the arc portion Under the joint action of the corners, the connecting snap-in rod needs a certain external force to be separated from the mounting bracket, so the support frame will not be easily disengaged when the desktop is lifted.

As a preference of the present invention, a first protruding strip is provided at the hinge of the support rod, a second protruding strip is provided at the hinge of the support base, and when the support base rotates relative to the support rod, the first protruding strip The raised strips interfere with the second raised strips.

Therefore, under the interference of the first protruding strip and the second protruding strip, the supporting base needs a certain external force to make it rotate, and the supporting base can remain stable when the desktop is subjected to a small external force.

As a preference of the present invention, the main desktop is provided with a first hypotenuse, and the flipped desktop is provided with a second hypotenuse, and the first hypotenuse and the second hypotenuse are always opposite to each other;

There is a gap between the first hypotenuse and the side where the second hypotenuse is located, and the size of the gap is smaller than the thickness of the main table top and the flip table top.

Thus, the gap between the first hypotenuse and the second hypotenuse ensures that there will be no interference during the rotation of the inverted tabletop relative to the main tabletop, and the size of the gap is smaller than the thickness of the tabletop so that the main tabletop Some objects that are not too small can be stacked between the desktop and the flipped desktop.

As a preferred feature of the present invention, the flip regulator includes a flip positioning part and a flip sliding part, the flip positioning part is connected to one side of the main desktop close to the first hypotenuse, the flip sliding part is connected to the One side of the overturned desktop is connected near the second hypotenuse, and the overturn positioning part is hinged to the overturn sliding part.

As a result, the reversible table top can rotate around the hinge hole of the reversing adjuster relative to the main table top.

As a preference of the present invention, the overturning positioning part has protruding clamping points evenly distributed around the hinge hole, and the overturning sliding part has positioning concave parts evenly distributed around the hinge hole, and the protruding clamping points The same number as the positioning recess, and the same distance from the hinge hole;

The raised sticking point is a steel ball with a supporting spring on the back. Under the limit of the limit cover with holes, only a small part of the steel ball protrudes outside. Under the action of external force, the supporting force of the spring can be overcome to make the raised part fall Press until it is flush with the outer surface of the limit cover;

The raised card point and the positioning recess provide multiple angles of positioning of the reversible table top relative to the main table top, and must provide a situation where the reversible table top and the two non-installation surfaces of the main table top are on the same plane. position.

As a result, the overturn adjuster is snapped into the positioning recess after rotating at different angles through the raised card point to provide multiple gear positions, and the turning table top is turned to the horizontal position as the most important gear position; The number of the raised card points and the positioning recesses is N, and the angle of each gear that can be turned up or down from the horizontal position is (360/N)°, and can be turned up to 90° at most. , Flip down 180°; Flip up 90°, the flipped table top can be used as a side baffle, and Flip down 180°, it can save space and be easy to carry and store.

As a preferred aspect of the present invention, the flip sliding part includes a slide groove for linear sliding and a return spring for return, and the return spring provides a force for the flip table top to approach the main table top.

Thus, setting the return spring can effectively reduce the gap between the flipped desktop and the main desktop when the flipped desktop is in a horizontal position, and increase the gap between the flipped desktop and the main desktop when the flipped desktop is turned up to be perpendicular to the main desktop. stability.

As a preference of the present invention, when the flipped tabletop is in a horizontal and unturned state relative to the main tabletop, the angle formed by the first hypotenuse and the second hypotenuse is a right angle with the opening upward;

The surface of the first hypotenuse is provided with a first latch, and the surface of the second hypotenuse is provided with a second latch, and the first latch and the second latch are opposite to the main The desktop is flipped upwards until the first oblique edge is engaged with the second oblique edge.

Thus, half of the vertical distance from the top of the first locking tooth and the second locking tooth to the tooth root is sunk in the surface of the first hypotenuse and the second hypotenuse, so as to ensure that the first oblique The side and the second hypotenuse can be completely attached.

As a preference of the present invention, when the first locking tooth and the second locking tooth are engaged, they provide a resistance to the downward sliding of the second hypotenuse relative to the first hypotenuse; in order to increase the resistance The effect of the dedendum center of the first detent shifts to the opposite side to the flip adjuster, and the second dedendum shifts to the same side as the flip adjuster relative to the dedendum center. One side offset; under the action of the restoring force of the return spring, the first locking tooth and the second locking tooth are locked more firmly, and the greater the offset between the tooth top and the root center of the locking tooth, the tighter the locking The force is also greater.

As a result, when the reversible desktop is turned up until the first hypotenuse and the second hypotenuse are in contact, a relatively large external force is required to make the reversible desktop Turning down effectively improves the stability of the turning table top after turning up.

In summary, the present invention has the following beneficial effects:

1. The support frame is installed with a mounting bracket with a limit slot and a half limit slot, which can easily and quickly adjust the height of the desktop, and has high stability; the support frame adopts a cross-hinged structure and is used in conjunction with the support base that is also hinged , so that the plane formed by the supporting base can always be parallel to the desktop, which increases the stability of the table; the supporting frame is detachable, which has the advantages of saving time and storage space when moving.

2. Multiple rotation gears are provided through the cooperation of the convex card point of the flip positioning part of the flip adjuster and the positioning concave part of the flip sliding part, and the stability after turning up is improved through the combined action of the locking teeth and the reset force of the flip sliding part It can provide different functions when the flip table is in the horizontal state, turned up and turned down, and has strong functionality.

Description of drawings

Fig. 1 is the overall three-dimensional diagram of an embodiment of the present invention;

Fig. 2 is the three-dimensional figure of support frame of the present invention;

Fig. 3 is a three-dimensional view of the desktop and the installation deck of the present invention;

Fig. 4 is the front view of the main table top and the installation deck of the present invention;

Fig. 5 is an exploded view of a support rod and a support base of the present invention;

Fig. 6 is a three-dimensional exploded view of the flip regulator of the present invention;

FIG. 7 is a schematic diagram of engagement between the first locking tooth and the second locking tooth in the present invention.

Detailed ways

The present invention will be further described through specific embodiments below in conjunction with the accompanying drawings.

As shown in Figure 1, a height-adjustable multifunctional table includes a desktop 1, two sets of mounting brackets 2, and two sets of cross-hinged support frames 3; the desktop 1 includes a main desktop 1-1, an overturned desktop 1- 2. And the flip regulator 1-3 used to connect the main desktop 1-1 and the flipped desktop 1-2; the mounting base 2 includes at least one limiting groove 2-1 and a limiting half groove 2-2, and two groups The mounting bracket 2 is symmetrically arranged and fixed on one side of the mounting surface of the main desktop 1-1; the support frame 3 includes a connecting rod 3-1, a supporting rod 3-2, and a supporting base 3-3 with a supporting plane; The snap-in rod 3-1 can be selectively installed in the limiting groove 2-1 or the half-limiting groove 2-2, or can be detachably separated from the mounting bracket 2.

The support frame 3 is selectively installed in the limit groove 2-1 or the limit half groove 2-2 to adjust the height of the desktop. Here, one installation card holder 2 is provided with two limit grooves 2-1, plus one limit There are 3 gears for selection in the half slot 2-2, and there are 9 combinations in total for the two sets of mounting brackets 2, which can be adjusted to 6 different heights. Adding a limit slot 2-1 can add more Adjustment options.

As shown in Figure 2, the connecting rod 3-1 is a cylinder, and the supporting rod 3-2 is a cubic slender rod with the same length; one end of the two supporting rods 3-2 is vertically connected to a connecting rod 3 respectively. The two ends of -1; the first hinged hole 3-2-1 is arranged at the same distance from the support bar 3-2 to the connecting bar 3-1, and the support bar 3-2 is opposite to the connecting bar 3-1 One end of each is provided with a second hinged hole 3-2-2, the first hinged hole 3-2-1 is parallel to the axial direction of the second hinged hole 3-2-2, and is connected with two connecting rods 3-1 cylinder The body axes are parallel; two sets of support frames 3 are cross-hinged at the first hinged hole 3-2-1, and the support base 3-3 is hinged at the second hinged hole 3-2-2; two connecting rods 3-1 The axes of the cylinders are parallel to form a plane Ia, no matter how the two groups of cross-hinged support frames 3 rotate, the support planes of the four support bases 3-3 can be adjusted to the coplanar plane IIb, and the plane Ia and the plane IIb are always parallel.

The connection snap-in rod 3-1 is installed on the rear plane I of the mounting base 2 and is parallel to the main desktop 1-1, so the plane II formed by the support plane of the support base 3-3 is parallel to the main desktop 1-1, and the support base 3- The supporting plane of 3 is in contact with the ground, so the main desktop 1-1 is parallel to the ground.

As shown in Figure 3 and Figure 4, the limiting groove 2-1 includes a circular arc portion 2-1-1 and a transition opening 2-1-2, and the lower side of the transition opening 2-1-2 and the circular arc portion 2- 1-1 is tangent, the upper side of the transition opening 2-1-2 intersects with the arc portion 2-1-1 to form a corner, and the upper side and lower side of the transition opening 2-1-2 open outward angle, and the opening direction of the transition opening 2-1-2 is facing the other set of mounting brackets 2; the limiting half groove 2-2 includes a circular arc part 2-2-1 and a side part 2-2-2 , the opening direction of the angle between the side part 2-2-2 and the main table top 1-1 faces another set of mounting brackets 2; the diameter of the cylinder connecting the clamping rod 3-1 is smaller than the circular arc of the limiting groove 2-1 The diameter of the arc portion 2-2-1 between the part 2-1-1 and the limiting half groove 2-2 is greater than or equal to the minimum distance between the transition opening 2-1-2 and smaller than the maximum distance between the transition opening 2-1-2 .

Connecting the snap-in rod 3-1 into the arc portion 2-1-1 needs to overcome the interference force provided by the minimum distance of the transition opening 2-1-2, and the interference force and the upper side and the arc portion 2- Under the combined effect of the card angle formed by the intersection of 1-1, it takes a certain external force to connect the card-in rod 3-1 to be separated from the installation card seat 2, so the support frame 3 will not be easily detached when the desktop is lifted; due to the limited half-slot 2-2 There is no interference force provided by the upper side and the lower side of the connecting rod 3-1, so the angle between the side part 2-2-2 of the limiting half groove 2-2 and the main table top 1-1 is less than The angle between the lower side of the limiting groove and the main desktop is small, so that the support frame 3 will not be easily disengaged when the desktop is lifted, and the side portion 2-2-2 of the limiting half groove 2-2 is connected to the main desktop 1 The included angle of -1 is preferably 10°~30°.

As shown in Figure 5, the hinge of the support rod 3-2 is provided with a first protruding bar 3-2-3, the hinge of the support base 3-3 is provided with a second protruding bar 3-3-1, and the support base 3-3- 3 There is interference between the first protruding strip 3-2-3 and the second protruding strip 3-3-1 when rotating relative to the support rod 3-2.

Under the interference of the first raised strip 3-2-3 and the second raised strip 3-3-1, the support base 3-3 needs a certain external force to make it rotate, and the support base 3 when the desktop 1 is subjected to a small external force -3 can keep stable, and other structures that increase the rotational force can also be set here except the raised bar.

As shown in Figure 3, the main desktop 1-1 is provided with a first hypotenuse 1-1-1, and the flipped desktop 1-2 is provided with a second hypotenuse 1-2-1, and the first hypotenuse 1-1-1 and The second hypotenuse 1-2-1 is always set relative to each other; there is a gap between the first hypotenuse 1-1-1 and the side where the second hypotenuse 1-2-1 is located, and the size of the gap is smaller than that of the main desktop 1 and the overturn The thickness of the table top 2.

The gap between the first hypotenuse 1-1-1 and the second hypotenuse 1-2-1 ensures that there will be no interference during the rotation of the flip table top 1-2 relative to the main table top 1-1, and the size of the gap is smaller than that of the table top The thickness makes it possible to stack some objects that are not too small between the main desktop 1-1 and the flipped desktop 1-2.

As shown in Figure 3, the flip adjuster 1-3 includes a flip positioning part 1-3-1 and a flip sliding part 1-3-2, and the flip positioning part 1-3-1 and one side of the main desktop 1-1 are close to the first The hypotenuse 1-1-1 is connected, the overturning sliding part 1-3-2 is connected with one side of the overturning desktop 1-2 close to the second hypotenuse 1-2-1, the overturning positioning part 1-3-1 is connected with the overturning sliding Section 1-3-2 hinged.

As shown in Figure 6, there is a raised card point 1-3-1-1 evenly distributed around the circle centered on the hinge hole in the flip positioning part 1-3-1, and there is a flip slide part 1-3-2 centered on the hinge hole The number of positioning recesses 1-3-2-1 evenly distributed on the circumference, the number of raised points 1-3-1-1 and the positioning recesses 1-3-2-1 are the same, and the distance from the hinge hole is the same; the raised points 1 -3-1-1 and the positioning recess 1-3-2-1 provide the positioning of the flipped desktop 1-2 relative to the main desktop 1-1 at multiple angles, and must provide a flipped desktop 1-2 and the main desktop 1-1 The positioning of two non-mounting surfaces in the same plane.

The overturn regulator 1-3 rotates through the raised card point 1-3-1-1 and snaps into the positioning recess 1-3-2-1 to provide multiple gears, while the overturn table 1-2 is turned to the horizontal position. The most important gear position; if the number of raised card points 1-3-1-1 and positioning concave parts 1-3-2-1 is N, then the flip table 1-2 can be turned up or down from the horizontal position The angle of each gear is (360/N)°, and it can be turned up to 90° and down to 180°; after turning up 90°, turning the desktop 1-2 can be used as a side baffle, and turning down 180° It can save space and is easy to carry and store.

As shown in Figure 6, the flip sliding part 1-3-2 includes a sliding groove 1-3-2-2 for linear sliding and a return spring 1-3-2-3 for returning, and the return spring 1-3 -2-3 provides the force to turn the table top 1-2 close to the main table top 1-1.

Setting the return spring 1-3-2-3 can effectively reduce the gap between the flipped desktop 1-2 and the main desktop 1-1 when the flipped desktop 1-2 is in a horizontal position, and when the flipped desktop 1-2 is turned up to the level of the main desktop 1-1 Added 1-2 stability to flipped table tops when vertical.

As shown in Figure 3, when the flipped desktop 1-2 is in a horizontal and unturned state relative to the main desktop 1-1, the angle formed by the first hypotenuse 1-1-1 and the second hypotenuse 1-2-1 is opening upward the right angle;

As shown in Figure 7, the surface of the first hypotenuse 1-1-1 is provided with a first locking tooth 1-1-1-1, and the surface of the second hypotenuse 1-2-1 is provided with a second locking tooth 1-2- 1-1, the first locking tooth 1-1-1-1 and the second locking tooth 1-2-1-1 flip up to the first hypotenuse 1-1 and When the second hypotenuse 2-1 is fitted together, it engages.

Half of the vertical distance from the tooth top to the dedendum of the first locking tooth 1-1-1-1 and the second locking tooth 1-2-1-1 is trapped in the first hypotenuse 1-1-1 and the second hypotenuse 1-2 -1 to ensure that the first hypotenuse 1-1-1 and the second hypotenuse 1-2-1 can fit together completely.

When the first locking tooth 1-1-1-1 and the second locking tooth 1-2-1-1 are engaged, the second beveled side 1-2-1 is opposite to the first beveled side 1-1-1. The resistance to sliding down.

In order to increase the effect of the blocking force, the tooth top of the first tooth 1-1-1-1 is offset to the opposite side of the flip adjuster 1-3 relative to the center of the tooth root, and the second tooth 1-2-1-1 The top of the tooth is offset to the same side as the flip adjuster 1-3 relative to the center of the tooth root; under the action of the restoring force of the return spring 1-3-2-3, the first locking tooth 1-1-1-1 and the second The clamping tooth 1-2-1-1 is more firmly clamped, and the greater the offset between the tooth top and the root center of the clamping tooth, the greater the clamping force; turn the desktop 1-2 up to the first hypotenuse 1-1 When -1 is attached to the second hypotenuse 1-2-1, even if it is not in the gear position of the flip adjuster 1-3, a relatively large external force is required to make the flip table top 1-2 turn down, which effectively improves the flip table top 1 -2 Stability after a flip.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Under the premise of not departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention shall fall within the scope of protection of the present invention, and the technical content claimed in the present invention has been fully described in the claims.

Claims (6)

1. A height-adjustable multifunctional table, characterized in that it includes a table top (1), two sets of mounting brackets (2), and two sets of cross-hinged support frames (3); The desktop (1) includes a main desktop (1-1), a flipped desktop (1-2), and a flip adjuster for connecting the main desktop (1-1) with the flipped desktop (1-2) (1-3); The installation card holder (2) includes at least one limit groove (2-1) and a limit half groove (2-2), and two sets of the installation card holders (2) are symmetrically arranged and fixed on the main desktop (1-1) on the side of the mounting surface; The support frame (3) includes a connecting rod (3-1), a support rod (3-2), and a support base (3-3) with a support plane; The connecting snap-in rod (3-1) can be selectively installed in the limiting groove (2-1) or the limiting half groove (2-2), or can be detachably connected to the mounting bracket (2) Separation; The main desktop (1-1) is provided with a first hypotenuse (1-1-1), the flipped desktop (1-2) is provided with a second hypotenuse (1-2-1), and the first The hypotenuse (1-1-1) is always arranged opposite to said second hypotenuse (1-2-1); There is a gap between the first hypotenuse (1-1-1) and the side where the second hypotenuse (1-2-1) is located, and the size of the gap is smaller than that of the main desktop (1-1) and The thickness of the reversible desktop (1-2); The flip adjuster (1-3) includes a flip positioning part (1-3-1) and a flip sliding part (1-3-2), and the flip positioning part (1-3-1) and the main desktop One side of (1-1) is connected close to the first hypotenuse (1-1-1), and one side of the flipping sliding part (1-3-2) and the flipping desktop (1-2) is close to the The second hypotenuse (1-2-1) is connected, and the turning positioning part (1-3-1) is hinged to the turning sliding part (1-3-2); The overturning positioning part (1-3-1) has raised clamping points (1-3-1-1) uniformly distributed around the hinge hole as the center, and the overturning sliding part (1-3-2) has The hinged holes are positioning recesses (1-3-2-1) uniformly distributed on the center circumference, and the number of the raised points (1-3-1-1) and the positioning recesses (1-3-2-1) The same and the same distance from the hinge hole; The raised card points (1-3-1-1) and the positioning recesses (1-3-2-1) provide that the flipped desktop (1-2) has more positioning at an angle, and must provide a positioning where the flipped desktop (1-2) and the two non-installation surfaces of the main desktop (1-1) are on the same plane; The flip adjuster (1-3) rotates through the raised card point (1-3-1-1) at different angles and then snaps into the positioning recess (1-3-2-1) to provide multiple gear positions, and the raised card point is set (1-3-1-1) and the number of positioning recesses (1-3-2-1) is N, then the angle of each step of turning up or down from the horizontal position of the flip table (1-2) is ( 360/N)°, and can be turned up to 90° and down to 180°; after turning up to 90°, the desktop (1-2) can be used as a side baffle, and after turning down by 180°, it can save space and is easy to carry and carry Storage; When the flipped table top (1-2) is in a horizontal and unturned state relative to the main table top (1-1), the first hypotenuse (1-1-1) and the second hypotenuse (1-2) -1) The angle formed is a right angle with the opening upward; The surface of the first hypotenuse (1-1-1) is provided with a first locking tooth (1-1-1-1), and the surface of the second hypotenuse (1-2-1) is provided with a second locking tooth (1-2-1-1), the first latch (1-1-1-1) and the second latch (1-2-1-1) on the flip table (1-2 ) is flipped up relative to the main table top (1-1) until the first hypotenuse (1-1-1) is engaged with the second hypotenuse (1-2-1). 2. A height-adjustable multifunctional table according to claim 1, characterized in that: the connecting rod (3-1) is a cylinder, and the supporting rods (3-2) have the same length a cubic slender rod; one end of the two support rods (3-2) is vertically connected to the two ends of one of the connecting rods (3-1); A first hinge hole (3-2-1) is provided at the same distance from the support rod (3-2) to the connecting rod (3-1), and the support rod (3-2) is connected to the The opposite end of the connection snap-in rod (3-1) is provided with a second hinge hole (3-2-2), and the first hinge hole (3-2-1) is connected with the second hinge hole ( 3-2-2) The direction of the axis is parallel to the axis of the cylinders of the two connecting rods (3-1); The two sets of support frames (3) are cross-hinged at the first hinge hole (3-2-1), and the support base (3-3) is hinged at the second hinge hole (3-2-2 ); The cylinder axes of the two connecting snap-in rods (3-1) are parallel to form a plane I (a), no matter how the two sets of cross-hinged support frames (3) rotate, the four support bases (3-3 ) can be adjusted to a coplanar plane II(b), said plane I(a) being always parallel to said plane II(b). 3. A height-adjustable multifunctional table according to claim 1, characterized in that: the limiting groove (2-1) includes a circular arc portion (2-1-1) and a transition opening (2-1-1) 1-2), the lower side of the transition opening (2-1-2) is tangent to the arc portion (2-1-1), and the upper side of the transition opening (2-1-2) The edge intersects with the arc portion (2-1-1) to form an angle, the upper side and the lower side of the transition opening (2-1-2) form an angle that opens outward, and the transition The opening directions of the openings (2-1-2) are all facing the other set of the mounting brackets (2); The limiting half groove (2-2) includes an arc portion (2-2-1) and a side portion (2-2-2), and the side portion (2-2-2) and the main The direction of the opening of the included angle of the desktop (1-1) faces the other set of the mounting brackets (2); The diameter of the cylindrical body of the connecting rod (3-1) is smaller than the arc portion (2-1-1) of the limiting groove (2-1) and the limiting half groove (2-2) ), the diameter of the arc portion (2-2-1) is greater than or equal to the minimum spacing of the transition openings (2-1-2) and smaller than the maximum spacing of the transition openings (2-1-2). 4. A height-adjustable multi-function table according to claim 2, characterized in that: a first protruding strip (3-2-3) is provided at the hinge of the support rod (3-2), so that The support base (3-3) is hinged with a second protruding strip (3-3-1), and when the support base (3-3) rotates relative to the support rod (3-2), the first The raised strip (3-2-3) interferes with the second raised strip (3-3-1). 5. The height-adjustable multifunctional table according to claim 1, characterized in that: the flip sliding part (1-3-2) includes a sliding groove (1-3-2- 2) and the return spring (1-3-2-3) for returning, the return spring (1-3-2-3) provides the flip desktop (1-2) close to the main desktop (1 -1) force. 6. The height-adjustable multifunctional table according to claim 1, characterized in that: the first latch (1-1-1-1) and the second latch (1-2- 1-1) In an engaged state, provide a resistance force for the second hypotenuse (1-2-1) to slide downward relative to the first hypotenuse (1-1-1).

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