CN110101227B - Size-adjustable folding table capable of being additionally arranged on suitcase - Google Patents

Abstract

The invention discloses a size-adjustable folding table capable of being additionally arranged on a suitcase, wherein a main tabletop and an auxiliary tabletop are in buckling connection and are locked and fixed through a first locking component and a second locking component, the main tabletop and the auxiliary tabletop are spliced into a coplanar large tabletop, an X-shaped support is symmetrically arranged on a bottom plate in a height-adjustable mode through a second locking component, the upper end of the X-shaped support on one side is connected with the bottom plate surface of the main tabletop in a sliding mode through a sliding component, the upper end of the X-shaped support on the other side is connected with the bottom plate surface of the main tabletop in a rotatable mode, and the size-adjustable folding table is additionally arranged on the suitcase through a fixing component on the side edge of the bottom plate. The folding table has the advantages that the structure is simple, the size of the table top can be adjusted through buckling the grooves and the bosses and matching locking of the first locking component and the second locking component, the height and the gradient of the table top can be adjusted through adjusting the second locking component and matching with the sliding component, the X-shaped support can be folded, the storage space is saved, and the folding table with the adjustable size can be additionally arranged on luggage cases with different sizes through the fixing component and has wide application range.

Description

A size-adjustable folding table that can be attached to a suitcase

Technical field

The invention relates to the technical field of tables, and in particular to a size-adjustable folding table that can be installed on a suitcase.

Background technique

At present, as people's quality of life improves day by day or people go out to work more frequently, suitcases have become a commonly used storage device for clothing and other daily or office supplies when people go on business trips or travel. In order to be suitable for different long-term and short-term trips, some people will buy multiple suitcases of different sizes at the same time. When they are not on business or traveling, these suitcases are often left idle at home, taking up space and reducing practicality. This resulted in a certain waste of resources. With the rise in housing prices, many people now live in small and medium-sized houses. When the house space is limited, folding tables are widely used because they are easy to store and save storage space. However, the existing folding table height and board surface The limited size limits applications to a certain extent. Therefore, it is of great significance to design a folding table that can be added to the suitcase row and is adjustable in size and height to fully utilize or improve the practicality of the suitcase and the folding table while saving their storage space.

Contents of the invention

The technical problem to be solved by the present invention is to solve the above-mentioned shortcomings of the prior art and provide a simple structure that can be installed on a suitcase. The size, height and inclination of the desktop are all adjustable, foldable, and the storage space is small and can be added. Size-adjustable folding table mounted on a suitcase.

In order to achieve the above technical objectives, the technical solution adopted by the present invention is: a size-adjustable folding table that can be installed on a suitcase, including a main desktop, a secondary desktop, an X-shaped bracket and a bottom plate. The main desktop and the secondary desktop are fastened together. Connect, and further lock and fix through the first locking component and the second locking component, and splice into a coplanar large-sized desktop. The two X-shaped brackets are height-adjustable and symmetrically installed on the base plate through the second locking component. The upper end of the X-shaped bracket on one side is slidably connected to the bottom surface of the main desktop through a sliding assembly. The upper end of the X-shaped bracket on the other side is rotatably connected to the bottom surface of the main desktop. There is a fixed component on the side of the bottom plate. This size can The adjustable folding table is installed on the suitcase through fixed components.

Further, the thickness of the main desktop and the auxiliary desktop are the same, grooves are respectively provided on the left and right sides of the main desktop, and a boss is protruding from one side of the auxiliary desktop, and the boss is inserted into the groove. The secondary desktop is fastened and fixed to the side of the main desktop, and is spliced with the main desktop to form a large-sized desktop.

Furthermore, the number of the auxiliary desktops is two. Through the snap connection between the boss and the groove, the two auxiliary desktops are respectively fixed on the left and right sides of the main desktop, and are spliced with the main desktop to form a large-sized desktop.

Further, the first locking assembly includes a first main desktop locking assembly and a first auxiliary desktop locking assembly. The first main desktop locking assembly is respectively disposed on the front and rear of the bottom plate of the main desktop. A main desktop locking component includes a "convex" shaped groove, a T-shaped support plate, a main desktop shallow groove and a main desktop baffle. The two "convex" shaped grooves are anti-parallel and protrude from the bottom plate of the main desktop. on the surface, and the ends of the vertical sections of the "convex"-shaped groove extend vertically to the left and right sides of the main desktop respectively. The T-shaped support plate is embedded in the "convex"-shaped groove and can be moved along the "convex" The font-shaped groove slides left and right, and the thickness of the T-shaped support plate is less than the depth of the "convex"-shaped groove. There are three main desktop shallow grooves transversely opened in the two "convex"-shaped grooves. The shallow grooves on the tabletop run vertically through both side walls of the "convex" shaped grooves, and the three main tabletop shallow grooves on the two "convex" shaped grooves are opposite to each other. The main tabletop baffles are The number is three, and they are respectively installed in the shallow grooves of the main desktop with two holes facing each other in the two "convex" shaped grooves, restricting the horizontal section of the T-shaped support plate from sliding out of the "convex" shaped groove, so The first auxiliary desktop locking component includes a rectangular groove, a shallow groove on the auxiliary desktop and a auxiliary desktop baffle. The two rectangular grooves are transversely recessed at the front and rear of the bottom plate of the auxiliary desktop and close to the boss side. The long sides are parallel to the front and rear sides of the sub-desktop. The shallow groove of the sub-desktop is transversely opened in the rectangular groove. The baffle of the sub-desktop is installed in the shallow groove of the sub-desktop. The rectangular groove is connected with the word "convex". The notches of the T-shaped grooves are opposite to each other, and the size of the vertical section of the T-shaped support plate matches the size of the rectangular groove, so that the T-shaped support plate can be slid into the rectangular groove opposite to the notch, and further locks and fixes the main desktop and the rectangular groove. Vice desktop.

Further, the second locking piece is a nearly "work" type fixing plate, the length of the nearly "work" type fixing plate is greater than the length of the rear side of the main desktop, and the vertical plate of the nearly "work" type fixing plate is One side has a narrow bayonet, and the distance between the upper and lower plates matches the thickness of the main desktop and the auxiliary desktop. It can catch the upper and lower plates of the main and auxiliary desktops spliced to the left and right. The vertical plate of the nearly "work" type fixed plate The other side has a wide bayonet, and the distance between the upper and lower plates matches the stacked thickness of a main desktop and two auxiliary desktops. It can snap onto the upper and lower plates of the stacked main desktop and two auxiliary desktops.

Further, the second locking assembly includes a slide block, a "]" type chute, a right angle brace and a fixing bolt. The slide blocks are respectively fixed to the lower ends of the two cross brackets of the X-shaped bracket. The "]" type The chute is fixed to the outer wall of the vertical plate surface of the right angle brace through bolts. The right angle brace is symmetrically installed on the left and right sides of the upper plate surface of the base plate. The slider is provided with threaded holes, and fixing bolts are installed in the threaded holes. The outer sides of the upper and lower panels of the "]"-shaped chute are respectively provided with outer eaves vertically downward and vertically upward. The slider is embedded in the "]"-shaped chute. The slider drives the two sides of the X-shaped bracket respectively. The cross bracket slides back and forth along the channel of the "]" type chute, and the fixing bolts are tightened. A huge friction force is generated between the slide block and the "]" type chute, so that the slide block is fixed in the "]" type chute. , then the lower ends of the two cross brackets of the Adjust the height of the X-shaped brackets on both sides to raise and lower the main desktop or the height of the spliced large-sized desktop as a whole.

Further, the sliding assembly includes a hinge, a dovetail slider and a dovetail groove. The upper end of the X-shaped bracket on one side is rotatably connected to the bottom of the main desktop through the hinge, and the upper end of the X-shaped bracket on the other side is connected to the bottom of the main desktop through the hinge. The dovetail slider is connected. The dovetail slider is embedded in the dovetail groove and can slide left and right along the dovetail groove. The dovetail groove is set on the bottom surface of the main desktop, close to the X-shaped bracket side of this side. There is a height difference between the X-shaped brackets on both sides. The dovetail slider drives the upper end of the X-shaped bracket to slide left and right in the dovetail groove. The inclination of the main desktop or the spliced large-sized desktop is adjustable.

Further, the fixing component includes a pull ring and a fastening rope. The pull ring is hinged to the four sides of the bottom plate respectively. One end of the fastening rope is detachably fixed on the pull ring, and the fastening rope on the opposite side is removable. The movable end surrounds the suitcase and is fixed, so that the suitcase can be fixed so that this size-adjustable folding table can be installed on the suitcase.

Further, the fastening rope is a wide flat rope, and the fastening ropes on the opposite sides of the base plate are respectively provided with the matte side and the hook surface of the Velcro at intervals. Through the adhesion and matching of the matte surface and the hook surface, the fastening ropes on the opposite sides surround Secure luggage.

The invention has the following beneficial effects:

1) Through the fastening connection of the groove and the boss, the auxiliary desktop is fixed on the side of the main desktop, and is spliced with the main desktop to form a large-sized desktop. Through the cooperation and locking of the first locking component and the second locking piece, the main desktop The desktop and the auxiliary desktop are further locked. The size of the desktop is adjustable and easy to adjust, which can meet the needs of different desktop sizes. When the table is not needed, the auxiliary desktop is removed, stacked on the main desktop, and fixed with the second locking piece. Hold down, press down on the tabletop, slide the lower end sliders of the two cross brackets of the On the suitcase, it can save storage space and improve space utilization;

2) The slider drives the two cross brackets of the X-shaped bracket to slide forward and backward along the channel of the "]" type chute. By adjusting the distance between the sliders at the lower ends of the two cross brackets of the The height of the bracket is adjustable. The two X-shaped brackets can be adjusted simultaneously to adjust the overall height of the main desktop or a spliced large-sized desktop. Adjust the height difference between the two X-shaped brackets and cooperate with the dovetail slider to drive the upper end of the X-shaped bracket to the dovetail. Sliding left and right in the groove can adjust the inclination of the main desktop or a spliced large-size desktop; on the slope surface, lower the height of the X-shaped bracket on the high side of the slope or increase the height of the X-shaped bracket on the low side of the slope, driven by the dovetail slider The upper end of the X-shaped bracket on this side slides left and right in the dovetail groove, so that the main desktop or the spliced large-sized desktop can be adjusted to a horizontal state, maintaining normal use, easy adjustment, and diverse functions;

3) The pull ring is hinged with the bottom plate, and the pull ring can rotate. Through the fastening rope fixed on the pull ring, this size-adjustable folding table can be installed on suitcases of different sizes, and has a wide range of applications.

Description of drawings

Figure 1 is a diagram of the use state of the present invention installed on a luggage case;

Figure 2 is a view of the present invention in a storage state after being installed on a suitcase;

Figure 3 is a schematic diagram of the bottom splicing of the main desktop and the secondary desktop according to the present invention;

Figure 4 is a schematic diagram of the bottom of the main desktop of the present invention;

Figure 5 is a schematic diagram of the bottom of the secondary desktop of the present invention;

Figure 6 is a schematic structural diagram of the second locking member of the present invention;

Figure 7 is an enlarged view of part A of Figure 1;

Figure 8 is a schematic diagram of the connection between the hinge and the dovetail slider of the present invention;

Figure 9 is a schematic structural diagram of the T-shaped support plate of the present invention.

The reference numbers are: main desktop 1, groove 1-1, auxiliary desktop 2, boss 2-1, X-shaped bracket 3, bottom plate 4, second locking piece 5, "convex" shaped groove 6 , T-shaped support plate 7, main desktop baffle 8, rectangular groove 9, auxiliary desktop baffle 10, slider 11, "]" type chute 12, right-angle brace 13, fixing bolt 14, hinge 15, dovetail slide Block 16, dovetail groove 17, pull ring 18, fastening rope 19.

Detailed ways

The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in Figure 1, a size-adjustable folding table that can be installed on a suitcase includes a main desktop 1, a secondary desktop 2, an X-shaped bracket 3 and a bottom plate 4. The main desktop 1 and the secondary desktop 2 are buckled and connected. It is further locked and fixed through the first locking component and the second locking component 5, and is spliced into a coplanar large-sized desktop. The two X-shaped brackets 3 are symmetrically mounted on the base plate 4 through the second locking component in a height-adjustable manner. , the upper end of the X-shaped bracket 3 on one side is slidably connected to the bottom surface of the main desktop 1 through a sliding assembly, the upper end of the X-shaped bracket 3 on the other side is rotatably connected to the bottom surface of the main desktop 1, and the side of the bottom plate 4 is provided with Fixed components: This size-adjustable folding table is attached to the suitcase through fixed components.

In the embodiment, the thickness of the main desktop 1 and the auxiliary desktop 2 are the same. Grooves 1-1 are respectively provided on the left and right sides of the main desktop 1. A boss 2-1 is protruding from one side of the auxiliary desktop 2. Through the boss 2-1 is inserted into the groove 1-1, and the auxiliary desktop 2 is fastened and fixed to the side of the main desktop 1, and is spliced with the main desktop 1 to form a large-sized desktop.

As shown in Figure 1, there are two auxiliary desktops 2. They are connected by the snapping of the boss 2-1 and the groove 1-1. The two auxiliary desktops 2 are respectively fixed on the left and right sides of the main desktop 1 and connected with the main desktop. Desktop 1 is spliced into a large size desktop.

As shown in Figures 3-4 and 9, the first locking component includes a first main desktop locking component and a first auxiliary desktop locking component. The first main desktop locking components are respectively arranged in front of and behind the bottom plate of the main desktop 1. The first main desktop locking component includes a "convex" shaped groove 6, a T-shaped support plate 7, a shallow groove on the main desktop and a main desktop baffle 8. The two "convex" shaped grooves 6 are anti-parallel. It is protrudingly arranged on the bottom surface of the main desktop 1, and the ends of the vertical sections of the "convex" shaped groove 6 extend vertically to the left and right sides of the main desktop 1 respectively, and the T-shaped support plate 7 is embedded in the "convex" shaped groove. In the groove 6, you can slide left and right along the "convex"-shaped groove 6. The thickness of the T-shaped support plate 7 is less than the depth of the "convex"-shaped groove 6. The two "convex"-shaped grooves 6 are transverse to each other. Three main desktop shallow grooves are provided. The main desktop shallow grooves vertically penetrate both side walls of the "convex" shaped groove 6, and the three main desktop shallow grooves on the two "convex" shaped grooves 6 have two sides. The two holes are opposite, and the number of the main desktop baffles 8 is three, which are respectively installed in the shallow grooves of the main desktop with two holes in the two "convex" shaped grooves 6, limiting the T-shaped support plate 7. The horizontal section slides out of the "convex" shaped groove 6. The first auxiliary tabletop locking component includes a rectangular groove 9, a auxiliary tabletop shallow groove and a auxiliary tabletop baffle 10. Two rectangular grooves 9 are laterally recessed in the auxiliary tabletop. The front and back of the base plate 2 are close to the side of the boss 2-1. The long sides of the rectangular groove 9 are parallel to the front and rear sides of the auxiliary tabletop 2. The shallow grooves of the auxiliary tabletop are transversely opened in the rectangular groove 9. The auxiliary tabletop baffle 10 Installed in the shallow groove of the auxiliary desktop, the rectangular groove 9 is opposite to the notch of the "convex" shaped groove 6, and the vertical section size of the T-shaped support plate 7 matches the size of the rectangular groove 9, making the T-shaped The support plate 7 can be slidably inserted into the rectangular groove 9 opposite the notch, and the main desktop 1 and the auxiliary desktop 2 are further locked and fixed.

As shown in Figure 6, the second locking member 5 is a nearly "work"-shaped fixing plate. The length of the nearly "work"-shaped fixing plate is greater than the length of the rear side of the main desktop 1. The vertical plate of the nearly "work"-shaped fixing plate is There is a narrow bayonet on the side, and the distance between the upper and lower plates matches the thickness of the main desktop 1 and the secondary desktop 2. It can snap the upper and lower panels of the main desktop 1 and secondary desktop 2 that are spliced to the left and right, and is close to the vertical position of the "work" type fixed plate. The other side of the board has a wide bayonet, and the distance between the upper and lower boards matches the stacked thickness of one main desktop 1 and two auxiliary desktops 2, and can snap the upper and lower boards of the main desktop 1 and two auxiliary desktops 2 stacked up and down.

As shown in Figures 1 and 9, the second locking component includes a slider 11, a "]"-shaped chute 12, a right angle brace 13 and a fixing bolt 14. The slider 11 is fixed to the two cross brackets of the X-shaped bracket 3 respectively. At the lower end, the "]" type chute 12 is fixed to the outer wall of the vertical plate surface of the right-angle brace 13 through bolts. The right-angle brace 13 is symmetrically installed on the left and right sides of the upper plate surface of the base plate 4. The slider 11 is provided with a threaded hole, and is installed in the threaded hole. There are fixing bolts 14, and outer eaves are provided vertically downward and vertically upward on the outer sides of the upper and lower panels of the "]" type chute 12 respectively. The slider 11 is embedded in the "]" type chute 12, and the slider 11 drives X The two cross brackets of the type bracket 3 slide back and forth along the channel of the "]" type chute 12, tighten the fixing bolts 14, and a huge friction force is generated between the slide block 11 and the "]" type chute 12, so that the slide block 11 is fixed in the "]" type chute 12, and then the lower ends of the two cross brackets of the 14 fixed, the height of the X-shaped bracket 3 is adjustable, and the height of the X-shaped brackets 3 on both sides can be adjusted simultaneously, so that the main desktop 1 or the height of the spliced large-sized desktop can be raised and lowered as a whole.

As shown in Figures 4 and 8, the sliding assembly includes a hinge 15, a dovetail slider 16 and a dovetail groove 17. The upper end of the X-shaped bracket 3 on one side is rotatably connected to the bottom of the main desktop 1 through the hinge 15, and the other side is rotatably connected to the bottom of the main desktop 1 through the hinge 15. The upper end of the side X-shaped bracket 3 is connected to the dovetail slider 16 through the hinge 15. The dovetail slider 16 is embedded in the dovetail groove 17 and can slide left and right along the dovetail groove 17. The dovetail groove 17 is provided On the bottom surface of the main desktop 1, close to the side of the X-shaped bracket 3, adjust the height difference between the X-shaped brackets 3 on both sides, and drive the upper end of the X-shaped bracket 3 to slide left and right in the dovetail groove 17 through the dovetail slider 16, and the main The inclination of the desktop 1 or the large-sized spliced desktop is adjustable.

As shown in Figure 1, the fixing assembly includes a pull ring 18 and a fastening rope 19. The pull ring 18 is hinged to the four sides of the base plate 4 respectively. One end of the fastening rope 19 is detachably fixed on the pull ring 18, and the other end of the fastening rope 19 is removably fixed to the pull ring 18. The movable end of the fastening rope 19 is fixed around the suitcase, which can fix the suitcase, so that the size-adjustable folding table can be installed on the suitcase.

Further, the fastening rope 19 is a wide flat rope, and the fastening ropes 19 on the opposite sides of the base plate 4 are respectively provided with a matte surface and a hook surface of Velcro at intervals. Through the adhesion and matching of the matte surface and the hook surface, the fastening ropes on the opposite sides are 19 surround fixed luggage compartment.

Specific Embodiment 1: This size-adjustable folding table is installed on a suitcase on a horizontal floor for use: According to the size of the suitcase, the size-adjustable folding table is adhered through the mating surface and the hook surface of the fastening rope 19 on the opposite side of the bottom plate 4. The table is installed on the suitcase, unscrew the fixing bolts 14, according to the required height of the X-shaped bracket 3, lift the main desktop 1 to the X-shaped bracket 3 to reach the target height, and then pass the two cross brackets of the The threaded holes on 11 are aligned with the fixed threaded holes at different positions and locked with fixing bolts 14. This size-adjustable folding table is supported on the suitcase. When the size of the tabletop needs to be expanded, the groove 1-1 and the boss 2 are used. -1 snap connection, the two auxiliary desktops 2 are respectively fixed on the left and right sides of the main desktop 1, push the T-shaped support plate 7 along the "convex" shaped groove 6 into the rectangular groove 9 opposite the notch, And through the narrow bayonet of the second locking piece 5, the sides of the main desktop 1 and the two auxiliary desktops 2 are fixed, and the main desktop 1 and the auxiliary desktop 2 can be further locked and fixed, so that the two auxiliary desktops 2 are connected to the main desktop 1 Spliced into a coplanar large-size desktop, when it is necessary to adjust the height of the large-size desktop, adjust the lower end sliders 11 of the two cross brackets of the Tighten the fixing bolts 14 to fix the slider 11, and the height of the When the bracket 3 is adjusted to a height difference, the dovetail slider 16 drives the upper end of the X-shaped bracket 3 on that side to slide left and right in the dovetail groove 17, and the large-size desktop tilts. When there is no need to use this size adjustable folding table , pull the T-shaped support plate 7 into the "convex" groove 6, pull out the second locking piece 5, and pull out the auxiliary desktop 2 to unload the auxiliary desktop 2 from the main desktop 1, and remove the two auxiliary desktops. Desktop 2 is stacked on the main desktop 1 and fixed with the wide bayonet of the second locking piece 5. Press down on the desktop, and the lower end sliders 11 of the two cross brackets of the X-shaped bracket 3 slide respectively along the channels of the "]"-shaped chute 12 Go to the front and rear ends of the channel, tighten the fixing bolts 14 to fix the slider 11, so that the size-adjustable folding table can be folded and stored on the suitcase to save storage space. When the suitcase needs to be used, tear off the fastening ropes on the opposite sides of the bottom plate 4 19. With the rough surface and hook surface, the size-adjustable folding table can be released from the suitcase, thereby meeting the normal use of the suitcase. The folded size-adjustable folding table can also save storage space and provide space utilization.

Specific Embodiment 2: This size-adjustable folding table is used on a slope. The difference from Specific Embodiment 1 is that when the slope is low, the X-shaped bracket 3 is connected to the main frame through the hinge 15, the dovetail slider 16 and the dovetail groove 17. When the bottom surface of desktop 1 is connected, the height of the X-shaped bracket on the lower slope side is raised, and the dovetail slider 16 drives the X-shaped bracket on that side to slide left and right in the dovetail groove 17, so that the main desktop 1 or the large-sized spliced desktop can be adjusted. to the horizontal state, maintaining normal use, easy to adjust, and versatile.

The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above-mentioned embodiments. All technical solutions that fall under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims (6)

1. A size-adjustable folding table that can be installed on a suitcase, including a main desktop (1), a secondary desktop (2), an X-shaped bracket (3) and a bottom plate (4), characterized in that the main table The desktop (1) and the auxiliary desktop (2) are buckled and connected, and further locked and fixed through the first locking component and the second locking piece (5), and are spliced into a coplanar large-size desktop with two X-shaped brackets ( 3) The second locking component is height-adjustable and symmetrically installed on the base plate (4). The upper end of the X-shaped bracket (3) on one side is slidingly connected to the base surface of the main desktop (1) through the sliding assembly, and the other side The upper end of the X-shaped bracket (3) is rotatably connected to the bottom surface of the main desktop (1). A fixing assembly is provided on the side of the bottom plate (4). This size-adjustable folding table is installed on the suitcase through the fixing assembly. ; The thickness of the main desktop (1) and the auxiliary desktop (2) are the same. Grooves (1-1) are respectively provided on the left and right sides of the main desktop (1). One side of the auxiliary desktop (2) A boss (2-1) is provided on the protrusion, and the boss (2-1) is inserted into the groove (1-1). The auxiliary tabletop (2) is fastened and fixed to the side of the main tabletop (1), and is connected to the side of the main tabletop (1). The main desktop (1) is spliced into a large-sized desktop; The second locking component includes a slider (11), a "]" type chute (12), a right angle brace (13) and a fixing bolt (14). The slider (11) is respectively fixed to the X-shaped bracket ( 3) at the lower end of the two cross brackets, the "]" shaped chute (12) is fixed to the outer wall of the vertical plate surface of the right angle brace (13) through bolts, and the right angle bracket (13) is symmetrically installed on the bottom plate (4) On the left and right sides of the upper plate surface, the slider (11) is provided with threaded holes, and fixing bolts (14) are installed in the threaded holes. The outer sides of the upper and lower plate surfaces of the "]" type chute (12) are vertical respectively. There are outer eaves downward and vertically upward, and the slider (11) is embedded in the "]"-shaped chute (12). The slider (11) drives the two cross brackets of the X-shaped bracket (3) respectively. Slide back and forth along the channel of the "]" type chute (12), tighten the fixing bolt (14), and a huge friction force is generated between the slide block (11) and the "]" type chute (12), causing the slide to The block (11) is fixed in the "]"-shaped chute (12), and then the lower ends of the two cross brackets of the X-shaped bracket (3) are respectively fixed on the "]"-shaped chute (12). Adjust the X-shaped bracket (3) The distance between the lower end sliders (11) of the two cross brackets is fixed by fixing bolts (14). The height of the X-shaped bracket (3) is adjustable. The height of the X-shaped brackets (3) on both sides can be adjusted synchronously to lift the main body as a whole. Desktop (1) or spliced large size desktop height; The sliding assembly includes a hinge (15), a dovetail slider (16) and a dovetail groove (17). The upper end of the X-shaped bracket (3) on one side is rotatably connected to the main desktop (1) through the hinge (15). The bottom of the X-shaped bracket (3) on the other side is connected to the dovetail slider (16) through the hinge (15). The dovetail slider (16) is embedded in the dovetail groove (17). Slide left and right along the dovetail groove (17), which is set on the bottom surface of the main desktop (1), close to the X-shaped bracket (3) on that side, and adjust the X-shaped brackets (3) on both sides If there is a height difference, the dovetail slider (16) drives the upper end of the X-shaped bracket (3) to slide left and right in the dovetail groove (17). The inclination of the main desktop (1) or the spliced large-sized desktop is adjustable. 2. The size-adjustable folding table that can be installed on a suitcase according to claim 1, characterized in that: the number of the auxiliary tabletops (2) is two, and the convex table (2-1) and the concave table are connected to each other. The two auxiliary desktops (2) are respectively fixed on the left and right sides of the main desktop (1) through the snap connection of the groove (1-1), and are spliced with the main desktop (1) to form a large-sized desktop. 3. The size-adjustable folding table that can be installed on a suitcase according to claim 1, characterized in that: the first locking assembly includes a first main desktop locking assembly and a first auxiliary desktop locking assembly. , the first main desktop locking components are respectively arranged on the front and rear of the bottom plate of the main desktop (1). The first main desktop locking components include a "convex" shaped groove (6), a T-shaped support plate ( 7), the main desktop shallow groove and the main desktop baffle (8), two "convex" shaped grooves (6) are anti-parallel and protruding on the bottom surface of the main desktop (1), and the "convex" character The ends of the vertical sections of the groove (6) extend vertically to the left and right sides of the main desktop (1) respectively. The T-shaped support plate (7) is embedded in the "convex" groove (6). Slide left and right along the "convex" shaped groove (6). The thickness of the T-shaped support plate (7) is less than the depth of the "convex" shaped groove (6). The two "convex" shaped grooves (6) ) are respectively horizontally provided with three main desktop shallow grooves, the main desktop shallow grooves vertically penetrate both side walls of the "convex" shaped groove (6), and the two "convex" shaped grooves (6) The three main desktop shallow grooves on the main desktop have two holes facing each other. The number of the main desktop baffles (8) is three, which are respectively installed in two "convex" shaped grooves (6) in two holes. In the shallow groove (10) of the opposite main desktop, the horizontal section of the T-shaped support plate (7) is restricted from sliding out of the "convex" shaped groove (6). The first auxiliary desktop locking assembly includes a rectangular groove ( 9), the shallow groove of the auxiliary tabletop and the auxiliary tabletop baffle (10). Two rectangular grooves (9) are transversely recessed at the front and rear of the bottom plate of the auxiliary tabletop (2) and close to the boss (2-1) side. The long sides of the rectangular groove (9) are parallel to the front and rear sides of the auxiliary tabletop (2). The shallow groove of the auxiliary tabletop is transversely opened in the rectangular groove (9). The auxiliary tabletop baffle (10) is installed on the auxiliary tabletop. In the shallow groove of the tabletop, the rectangular groove (9) is opposite to the notch of the "convex" groove (6), and the vertical section size of the T-shaped support plate (7) is consistent with the rectangular groove (9). The sizes match, so that the T-shaped support plate (7) can be slid into the rectangular groove (9) opposite the notch, and the main desktop (1) and the auxiliary desktop (2) are further locked and fixed. 4. The size-adjustable folding table that can be installed on a suitcase according to any one of claims 1-2, characterized in that: the second locking part (5) is a nearly "work" type fixing plate. , the length of the nearly "work" type fixed plate is greater than the length of the rear side of the main desktop (1), the vertical plate side of the nearly "work" type fixed plate has a narrow bayonet, and the distance between the upper and lower plates is the same as that of the main desktop (1) ) matches the thickness of the auxiliary desktop (2), and can snap the upper and lower panels of the left and right main desktop (1) and auxiliary desktop (2), and the other side of the vertical plate of the nearly "work" type fixed plate It has a wide bayonet, and the distance between the upper and lower plates matches the stacked thickness of a main desktop (1) and two auxiliary desktops (2). It can snap the main desktop (1) and two auxiliary desktops (2) stacked up and down. Upper and lower boards. 5. The size-adjustable folding table that can be installed on a suitcase according to claim 1, characterized in that: the fixing component includes a pull ring (18) and a fastening rope (19), and the pull ring (18) 18) Hinged to the four sides of the bottom plate (4) respectively, one end of the fastening rope (19) is detachably fixed on the pull ring (18), and the movable end of the fastening rope (19) on the opposite side surrounds the luggage The suitcase can be fixed to fix the suitcase so that this size-adjustable folding table can be installed on the suitcase. 6. The size-adjustable folding table that can be installed on a suitcase according to claim 5, characterized in that: the fastening rope (19) is a wide flat rope, and the fastening rope on the opposite side of the bottom plate (4) The matte surface and the hook surface of the Velcro are respectively arranged on the (19) at intervals. The matte surface and the hook surface are adhered and matched, and the fastening rope (19) on the opposite side surrounds and fixes the suitcase.