CN216316228U - Telescopic table plate of folding table - Google Patents

Abstract

A telescopic table top of a folding table comprises a first main panel and a second main panel which can be mutually butted, and is characterized by also comprising a movable panel movably arranged between the first main panel and the second main panel, wherein the left side part and the right side part of the movable panel are respectively butted with the side parts of the first main panel and the second main panel; and the two sides of the back of the first main panel and the second main panel are respectively provided with a sliding rail which can be in sliding fit with the supporting frame at the upper part of the table frame of the folding table. The folding table is characterized in that a movable panel is additionally arranged on the basis of two conventional butt joint panels, and a sliding rail matched with a table frame is arranged, so that the table top can stretch on the basis of folding the folding table; in addition, the pull rod and the bearing frame are configured, so that the table board is applied to a table frame with wheels, the table can be folded and used as a trolley, the design is unique and novel, multiple purposes are achieved, and various requirements of users can be met.

Description

Telescopic table plate of folding table

Technical Field

The utility model relates to a table board, in particular to a folding table board capable of realizing extension of a table top.

Background

At present, all have the butt joint panel that can fold each other in many furniture products, for example common folding table, when opening, two butt joint panels can dock into the table each other, and during folding, two butt joint panels can fold together, make the desk volume diminish, conveniently carry, accomodate and transport. However, although a common folding table can be folded, the table top cannot be stretched, and after the folding table is unfolded, the length of the table top is fixed and cannot be extended, so that the folding table cannot be adjusted according to the number of articles to be placed or the number of people to sit on. Such a folding table structure is disclosed in publication No. CN207428721U, specifically: the foldable frame mainly comprises a left panel and a right panel which are the same in size and shape, a left frame and a right frame which are fixed at the bottoms of the left panel and the right panel respectively, and two foldable supports which are movably connected with the left frame and the right frame, wherein a connecting cross rod is arranged at the butt joint of the left panel and the right panel, the left frame and the right frame comprise connecting vertical rods which are parallel to each other and are fixed at the two side parts of the bottoms of the left panel and the right panel respectively, and a rotating shaft is rotatably arranged between the two connecting vertical rods. This folding table can fold, but the desktop can not stretch out and draw back, expandes the back, and desktop length is fixed can not extend, can't adjust according to what of putting article or the number of people of sitting etc..

In addition, the existing table usually does not have the functions of pulling and carrying objects after being folded, so that the table is quite inconvenient to move or carry objects when being used outdoors.

In view of the above, in order to make the foldable table foldable, to make the length of the table top longer, and to make the table foldable and to make the table portable after being folded, it is necessary to improve the existing table top.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a retractable table top for a folding table, aiming at the above-mentioned current state of the art, so as to solve the problem that the length of the table top of the existing folding table cannot be adjusted.

The second technical problem to be solved by the present invention is to provide a retractable table top for a foldable table, which can enable a table using the table top to achieve the functions of pulling and carrying objects, in view of the above-mentioned current state of the art.

The first technical problem to be solved by the utility model adopts the technical scheme that: a telescopic table plate of a folding table comprises a first main panel and a second main panel which can be mutually butted, and is characterized by also comprising a movable panel which can be movably arranged between the first main panel and the second main panel, wherein the left side part and the right side part of the movable panel are respectively butted with the side parts of the first main panel and the second main panel; and the two sides of the back of the first main panel and the second main panel are respectively provided with a slide rail which can be in sliding fit with the support frame at the upper part of the table frame of the folding table.

Preferably, two or more than two sliding grooves are arranged at intervals in the length direction of the sliding rail, the length of each sliding groove is not less than half of the length of the movable panel, so that the table plate is connected with the supporting frame through a stop pin piece arranged in the sliding grooves, the first main panel and the second main panel can slide relative to the supporting frame, when the table plate slides to the maximum displacement, the interval distance between the first main panel and the first main panel is consistent with the length of the movable panel, and the movable panel is just embedded between the two main panels.

Preferably, for being more suitable for outdoor use, first main panel, second main panel and activity panel all adopt cavity blow molding panel, and all shaping on the butt joint face of activity panel and first, second main panel has interval distribution's recess and lug, activity panel and first main panel, second main panel butt joint back, the lug on the activity panel respectively with first main panel, the recess gomphosis on the second main panel, the recess on the activity panel respectively with the lug gomphosis on first main panel, the second main panel. Conventionally, under the butt joint state of a first main panel and a second main panel, the upper side parts of butt joint surfaces are in plane butt joint, and the lower side parts are sequentially embedded by a groove and a bump which are arranged between the upper side parts and the lower side parts; similarly, the left and right sides of the movable panel are butt joint surfaces respectively butt joint with the first and second main panels, under the butt joint state of the movable panel and the first and second main panels, the upper side parts of the butt joint surfaces are also in plane butt joint, and the lower side parts are also in sequential embedding by the grooves and the lugs between the upper side parts and the lower side parts. By adopting the structure, the structural strength of the butt joint of the panels is improved, the butt joint seams can be reduced, and the flatness of the table board can be ensured.

Preferably, the slide rail is a strip-shaped plate, is arranged between the longitudinal support rod of the support frame and the side parts of the first main panel and the second main panel, and can slide back and forth relative to the longitudinal support rod along with the first main panel and the second main panel. By adopting the structure, the arrangement of the frame and the foot rest unit of the table frame is not influenced, and the table frame can be hidden in the edge convex edges extending downwards of the first main panel and the second main panel, so that the overall appearance is not influenced.

Preferably, the bottom of the movable panel can be provided with a plurality of clamping pieces which can be clamped on the foot rest unit of the desk frame when not in use, so that the desk frame is convenient to take and use; the corner of the first main panel and/or the second main panel can be provided with a jack penetrating through the panels so as to insert articles, such as a telegraph pole for installing a lamp. And a plug cover can be arranged on the jack, and when the telegraph pole is not installed, the plug cover can be used for plugging, so that the desktop is flat.

The second technical problem to be solved by the present invention is to adopt the following technical scheme: the back of the second main panel is provided with a pull rod, and the pull rod can extend out of the second main panel in a pulling mode.

The back of the first main panel is provided with a bearing frame, the bearing frame can extend out of the first main panel in a pulling mode, and the bearing frame is rotationally locked in a state of being capable of erecting objects through a rotating mechanism.

In order to enable the pull rod and the bearing frame to be pulled out from the back of the table board, the edge convex edges extending downwards of the first main panel and the second main panel are respectively provided with a first abdicating notch and a second abdicating notch which can be used for the bearing frame and the pull rod to extend out. By adopting the structure, the length of the table plate of the folding table can be adjusted, and the table frame with the wheels is configured, so that the folding table has the dual functions of a table and a trolley, the table and objects can be moved more easily and laborsavingly, and more convenience is brought for activities such as outdoor activities, exhibition and display of people.

Preferably, the pull rod adopts a pull rod structure of a conventional draw-rod box and comprises a pair of pull rod outer tubes fixed on the back of the second main panel, a pull rod telescopic rod is assembled in each pull rod outer tube, a handle is arranged at the upper end of each pull rod telescopic rod, a button is arranged on each handle, and the button controls the telescopic positioning of the pull rod telescopic rods.

Preferably, in order to facilitate the placement of objects and have better bearing strength, the bearing frame is in a U-shaped structure and comprises a pair of parallel outer bearing frame tubes, and telescopic rods of the bearing frame which can be telescopically positioned are assembled in the outer bearing frame tubes; the telescopic rod of the bearing frame is U-shaped, and the rod body of the bearing frame is provided with the rotating mechanism.

Preferably, bear the frame telescopic link can adopt the upper boom and two lower booms of components of a whole that can function independently to be connected and constitute, the upper boom be the U-shaped, its both ends pass through respectively rotary mechanism connect a lower boom, wherein the tip of lower boom is the platykurtic after both sides are cut flat, and the outer fringe face has along vertical plane, inclined plane and the arcwall face on the lower boom length direction in proper order, correspondingly, the tip centre of upper boom be equipped with the mouth of holding, lower boom tip insert in the mouth of holding and connect through the pivot, constitute by this pivot and the end structure of upper and lower boom rotary mechanism that can bear the frame rotation locking. Thus, when the upper rod is pulled out, the wall surface of the accommodating opening of the upper rod opposite to the end part of the lower rod is rotated to be abutted against the vertical plane of the end part of the lower rod, and the inclined surface on the upper rod can limit the relative rotation of the upper rod and the lower rod, so that the upper rod can be locked in a 90-degree or approximately 90-degree upward state. Only when external force acts, the upper rod can rotate along the inclined plane and the arc-shaped surface until the upper rod and the lower rod are in a horizontal state, and at the moment, the upper rod can be retracted into the outer pipe of the bearing frame.

Preferably, the first main panel and the second main panel are respectively provided with a lock catch and a lock column which can be locked with each other, and the lock catch is rotatably arranged. When the folding table is used as a trolley, the first main panel and the second main panel can be firmly locked together after being folded in half, and can not be separated due to the increase of bearing.

Compared with the prior art, the utility model has the advantages that: the folding table is characterized in that a movable panel is additionally arranged on the basis of two conventional butt joint panels, and a sliding rail matched with a table frame is arranged, so that the table top can stretch on the basis of folding the folding table; in addition, the pull rod and the bearing frame are configured, so that the table board is applied to the table frame with wheels, and the table can be used as a trolley after being folded, so that one folding table has the functions of adjusting the length of the table board and transporting objects besides the conventional folding function, the design is unique and novel, the multiple purposes are realized, and the multiple requirements of users can be met.

Drawings

Fig. 1 is a schematic view of the desk top of the present invention in an extended and lengthened state.

Fig. 2 is a schematic view of fig. 1 in an inverted state.

Figure 3 is an exploded view of the removable panel of figure 1 (utility pole not shown).

FIG. 4 is a schematic view of the table top of the present invention in a retracted, unarmed state.

Fig. 5 is a schematic view of fig. 4 in an inverted state.

Figure 6 is an exploded schematic view of figure 1 (utility pole not shown).

Fig. 7 is a schematic view of fig. 6 in an inverted state.

Figure 8 is an exploded view of the table top.

Fig. 9 is a perspective view of the embodiment of the present invention in a folded state (with the tie bar pulled out).

Fig. 10 is a schematic view of fig. 9 after the loading ledges have been pulled out.

Fig. 11 is a schematic view of fig. 10 with the main panel 1a hidden.

Fig. 12 is a perspective view of a telescoping bar of a carriage in accordance with an embodiment of the present invention.

FIG. 13 is a view reflecting the locked state of the telescoping rod of the loading frame of FIG. 12.

Fig. 14 is an enlarged schematic view of a portion a of fig. 13.

Fig. 15 is an exploded view of fig. 13.

Fig. 16 is an enlarged schematic view of fig. 15 at B.

Fig. 17 is a schematic view of an embodiment of the present invention in a folded package state (with the main panel 1a hidden).

Fig. 18 is an enlarged view of fig. 17 at C.

Fig. 19 is an external view of the embodiment of the present invention in a folded package state.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 19, the present embodiment is a folding table equipped with a table board according to the present invention, comprising the table board 100 of the present invention, and a table frame 200, a pulley member 3, etc. matching with the table board, wherein:

the table 100 comprises a first main panel 1a, a second main panel 1b and a movable panel 1c, wherein the first main panel 1a and the second main panel 1b have the same shape, the same size or the same basic shape (as shown in fig. 8). However, the first and second main panels 1a and 1b are not limited thereto, and may be adjusted according to specific requirements. The movable panel 1c can be placed between the first and second main panels 1a and 1b to lengthen the length of the table, and the movable panel 1c can be one or more, but one of the embodiments is preferred. In order to better adapt to outdoor use, the first main panel 1a, the second main panel 1b and the movable panel 1c are hollow blow-molded panels (the concave structures at the bottoms of the panels are omitted in the figure). As is conventional, the opposite side portions of the first and second main panels 1a and 1b, i.e. the lower portions of the butting surfaces to be butted against each other, are integrally formed with the recesses 14 and the protrusions 13 distributed in a staggered manner, in the butting state of the first and second main panels 1a and 1b, the upper side portions of the butting surfaces are in plane butting, and the lower side portions are in sequential tabling butting with the recesses 14 and the protrusions 13 therebetween, so that the table plate is in the conventional double-spliced panel state as shown in fig. 3 and 4. Similarly, the left and right sides of the movable panel 1c are butt joint surfaces respectively butt joint with the first and second main panels, the lower parts of the two sides are also integrally formed with the recesses 14 and the projections 13 which are distributed in a staggered manner, when the movable panel 1c is butt joint with the first and second main panels 1a and 1b, the upper side parts of the butt joint surfaces are also in plane butt joint, the lower side parts are also in sequential tabling butt joint with the recesses 14 and the projections 13 which are arranged between the lower side parts, namely, the projections 13 on the movable panel 1c are tabling with the recesses 14 on the first and second main panels 1a and 1b, the recesses on the movable panel 1c are tabling with the projections 13 on the first and second main panels 1a and 1b, and the desk plate is in the extended and lengthened state shown in fig. 1-3. By adopting the structure, the structural strength of the butt joint of the panels is improved, the butt joint seam can be reduced, and the flatness and the attractiveness of the table board 100 can be ensured.

In addition, slide rails 8 which can be in sliding fit with the support frame 4 on the upper part of the table frame are respectively arranged on two sides of the back of the first main panel 1a and the second main panel 1b, and the first main panel 1a and the second main panel 1b can slide relative to the table frame through the slide rails 8. The table plate and the supporting frame of the traditional folding table are fixed together through connecting pieces such as bolts, and the table plate and the supporting frame cannot slide relatively.

As shown in fig. 2 and 4, two clips 17 are further installed on the back of the movable panel 1C, and the clips 17 may be C-shaped clips which can be clamped on the supporting legs 21 of the foot stand unit 2 when not in use, so as to be convenient for taking. In addition, at the corners of the first main panel 1a and/or the second main panel 1b, there are insertion holes 15 penetrating the panels for inserting some objects, such as a utility pole 19 for inserting a lamp. And a plug cover can be arranged on the jack 15, and when the telegraph pole 19 is not installed, the plug cover can be used for plugging, so that the desktop is kept flat.

The desk frame 200 is mainly composed of a supporting frame 4 and a left and right movably foldable foot frame units 2, the supporting frame 4 is composed of a front and rear pin joint device 41 and a plurality of transverse and longitudinal supporting rod members 43, 42 which are connected (the transverse and front and rear directions are the width direction of the desk board, the longitudinal and left and right directions are the length direction of the desk board), the transverse supporting rod member 43 and the longitudinal supporting rod member 42 are both hollow pipe members, and square pipes are preferred. Four longitudinal support rods 42 are provided, opposite to each other, and are connected to the pivoting devices 41, two transverse support rods 2 are provided, and are connected between the front and rear pivoting devices 41, respectively, and the left and right portions of the frame can be folded around the pivoting shafts 411 of the front and rear pivoting devices 41. The left and right foot rest units 2 are respectively and correspondingly connected with the longitudinal support rod members 42 of the support frame, and because the first and second main panels 1a and 1b of the folding table are required to slide and extend relative to the support frame 4, the left and right foot rest units 2 are not connected with the first and second main panels 1a and 1 b. The left and right leg units 2 have the same structure, and include a rotating shaft 22, two supporting legs 21 and a crosspiece 23, so as to facilitate the folding of the folding table to accommodate the movable panel and two legs inside (as shown in fig. 17), wherein the rotating shaft 22 and the two supporting legs 21 are arranged in a door shape, the rotating shaft 22 is welded at the upper ends of the two supporting legs 21, and the two ends of the rotating shaft 22 are rotatably arranged in the shaft holes of the two longitudinal supporting rod members 42, so that the leg unit 2 can rotate relative to the table board 100. The supporting legs 21 are vertical hollow tubes, and a supporting rod 24 is hinged between the longitudinal supporting rod 42 and the corresponding supporting leg 21, and the supporting rod 24 is mainly composed of a hinged upper connecting rod and a hinged lower connecting rod and can be folded. Adopt this foot rest unit structure neither to influence the flexible of table, and can make activity panel and two wheels can utilize the space that forms after first, two main panels fifty percent discount and place inside (as shown in fig. 17, 19) again when packing, reduce the packing volume of whole folding table to can reduce packing and cost of transportation, also conveniently accomodate and carry simultaneously.

Since the pivot joint device 41 can adopt a conventional structure, it will not be described in detail. It should be noted that the structures of the first and second main panels 1a and 1b, the supporting frame 4, the pivoting device 41 and the foot stool unit 2 of the present invention may be modified or other known techniques may be adopted besides the solution shown in the drawings of the present embodiment.

In order to make the first and second main panels 1a, 1b respectively slide relative to the supporting frame 4, a sliding mechanism is arranged between the first and second main panels 1a, 1b and the supporting frame 4, the position of the first and second main panels 1a, 1b relative to the supporting frame 4 can be changed through the sliding mechanism, so that the main panels have an extended position and a retracted position, a movable panel 1c can be placed in the extended position to be butted with the first and second main panels 1a, 1b, and the desk plate is lengthened (as shown in fig. 1, 2 and 3); in the retracted position, the first main panel 1a is docked with the second main panel 1b (fig. 4, 5). The method comprises the following steps: a slide rail 8 is provided between each longitudinal support member 42 and the first and second main panels 1a, 1b, the slide rail 8 is a long strip-shaped plate with a cross section of [ -shape, and is fixed with the first and second main panels 1a, 1b by screws, and the two can be linked together. The slide rail 8 is in sliding fit with the longitudinal support rod member 42, a slide groove 81 is arranged in the length direction of the slide rail 8, a stop pin member 9 connected with the longitudinal support rod member 42 is arranged in the slide groove 81, two ends of the stop pin member are respectively provided with an enlarged head, one end of the stop pin member is arranged on the slide groove 81, and the other end of the stop pin member passes through an opening of the longitudinal support rod member 42 and is arranged in a hollow cavity of the longitudinal support rod member 42. Generally, two or more sliding grooves 81 can be arranged on the sliding rail 8 at intervals according to the lengths of the first and second main panels 1a and 1b and the sliding rail 8, the length of each sliding groove 81 is set according to the length of the movable panel 1c, and when the first and second main panels 1a and 1b respectively slide to the maximum displacement, the distance between the first and second main panels 1a and 1b is consistent with the length of the movable panel 1c, so that the movable panel 1c can be just accommodated in the cavity to be butted and matched with the first and second main panels 1a and 1 b. The stop pin member 9 not only has the function of connecting the slide rail 8 and the longitudinal support rod member 42, but also has the function of stopping and limiting, when the first and second main panels 1a and 1b are at the extended positions, one end of the sliding groove 81 adjacent to the butt joint 12 collides with the stop pin member 9 (as shown in fig. 6 and 7); when the first and second main panels 1a and 1b are in the retracted position, the end of the slide groove 81 remote from the butt joint 12 collides with the stopper pin member 9. When the folding table is to be folded, the first and second main panels 1a, 1b are to be in a retracted position.

The folding table of the embodiment can be used as a cart after being folded (see fig. 9 and 10) in addition to the retractable table board. It is mainly realized by a pulley component 3, a pull rod 5, a bearing frame 6 and the like which are arranged at the back of the table board. Wherein:

two pulley members 3 are provided, which are installed on both sides of the back of the second main panel 1b in the width direction, adjacent to the joint 12 of the first and second main panels, and the wheels 31 of the pulley members can be folded on the back of the table board 1 when the table is unfolded (as shown in fig. 1-5); when the table is folded, the wheels 31 of the pulley members can extend out of the table board 1 and can slide in contact with the ground (as shown in fig. 9 and 10). The concrete structure of the pulley member 3 is as shown in fig. 2, it is mainly formed by wheel 31, movable connecting arm 32 and fixed seat 33, etc., the fixed seat 33 is set up on the horizontal supporting rod 43 in the supporting frame integrally, it has two parallel spaced lateral plates 35, the length direction of the lateral plate is identical to width direction of the table, both ends of the lateral plate have inner, outer spacing grooves 36, 37, can support the spacing projection 34 that connects to the movable connecting arm 32 to stop, the lateral plate edge between inner, outer spacing groove 36, 37 is processed into the circular arc. One end of the movable connecting arm 32 is pivoted on the fixed seat 33, and the other end is connected with the wheel axle of the wheel 31. When the movable connecting arm 32 turns to the inner side, the limiting convex column 34 thereon can be clamped in the inner limiting groove 36 of the fixing seat to be locked, so that the wheel 31 is in a folding state, and if unlocking is required, the movable connecting arm 32 is only needed to be manually operated, so that the limiting convex column 34 is separated from the inner limiting groove 36. Similarly, when the connecting arm 32 is turned to the outside, the limiting protrusion 34 thereon can be locked in the external limiting groove 37 of the fixing base, so that the wheel 31 is in the extended state. Therefore, the wheel 31 is locked in the opening state after the outer rotation or the folding state after the inner rotation through the fixed seat 33 and the movable connecting arm 32, the structure is simple, the use is convenient, the design is reasonable, and the folding of the table board and the folding of the foot rest unit cannot be influenced. When the table is to be folded and packed, the two wheels are detached from the articulated arms and placed in the free space 10 between the movable panel and the foot rest units, with the movable panel sandwiched between the foot rest units, as shown in fig. 17, and are restrained.

Referring to fig. 2 and 5, the pull rod 5 is installed in the middle of the right side of the second main panel 1b, and arranged in a T shape with the two pulley members 3, and the pull rod 5 can extend out from the back of the second main panel 1b along the length direction in a pulling manner (as shown in fig. 5), so that a second abdicating notch 11b for pulling out the pull rod is formed on an edge convex edge 16 extending downwards from the middle of the right side of the second main panel. The pull rod 5 can be realized in different structures, such as a relatively simple telescopic rod-like structure. However, the draw bar 5 shown in the drawing of this embodiment is a draw bar structure of a conventional draw bar box, and mainly includes a pair of draw bar outer tubes 51 fixed at the bottom of the desk board, a draw bar telescopic rod 54 is assembled in the draw bar outer tubes, a handle 53 is arranged at the upper end of the draw bar telescopic rod 54, a button 52 is arranged on the handle, and the telescopic positioning of the draw bar telescopic rod 54 is controlled by the button 52. When the desk is used, the pull rod is pulled out, and when the desk is not used, the pull rod is retracted to the back of the desk board.

The loading ledges 6 may be one or more, but are typically preferred to meet hanging and storage requirements, preferably two as shown in figure 2 of this embodiment, so as to utilise the area within the foot rest unit neatly without interfering with the foot rest unit. The loading frame 6 is also extended out of the table top 100 by pulling (similarly, a first abdicating notch 11a for pulling out the loading frame is provided on the edge flange extended downward from the first main panel), as shown in fig. 5, and is locked in the upward state relative to the table top by rotating the loading frame by a rotating mechanism 620, as shown in fig. 10 and 11.

The first and second loading frames 6a and 6b of this embodiment are respectively disposed on the first and second main panels (of course, they may be disposed on the same first main panel), so that in the folded state of the table, the first loading frame 6a is located on the same side as the pull rod 5, and the second loading frame 6b extends from the butt joint 12 (i.e., the gap between the first and second main panels) and is located on the same side as the pulley member 3 below, so that the first loading frame 6a is suitable for hanging articles such as chairs, and the second loading frame 6b is suitable for placing articles such as packing cases, and refrigerators containing food, as shown in fig. 10.

To facilitate the hanging/placing of objects and to provide a good bearing strength, the bearing frame 6 can be made into a U-shaped structure, which comprises a pair of outer tubes 61 fixed on the back of the table board, and telescopic rods 62 of the U-shaped bearing frame are assembled inside the outer tubes. The shaft of the telescoping shaft 62 of the loading frame is provided with a rotating mechanism 620, by which the telescoping shaft of the loading frame can be locked in an upward state relative to the table, but the loading frame can be designed in other types, and is not limited to this.

Since the second supporting frame 6b is to extend from the butt joint 12, in order not to affect the sliding and extension of the second main panel 1b, one end of the outer tube 61 of the supporting frame is fixed to the lateral supporting rod 43, and the other end (the non-fixed end 611) is slidably disposed on the limiting seat 18 mounted on the second main panel 1 b. The spacing distance between the two limiting seats 18 is not more than half of the length of the movable panel 1c corresponding to the outer tube 61 of the bearing frame, so that the non-fixed end 611 of the outer tube of the bearing frame can be supported and limited in the corresponding limiting seat 18 corresponding to the extended position and the retracted position of the second main panel 1 b.

As shown in fig. 12-16, the telescopic rod 62 of the loading frame is formed by connecting a split upper rod 621 and two lower rods 622, the upper rod 621 is U-shaped, and two ends of the upper rod 621 are respectively connected to the lower rods 622 through a rotating mechanism 620, wherein the end of the lower rod 622 is flat with two sides flattened, and the outer edge surface 624 sequentially has a vertical plane, a slope and an arc surface along the length direction of the lower rod. The middle of the end of the upper rod 621 is provided with a receiving hole 625, the end of the lower rod is inserted into the receiving hole 625 and connected to the upper rod 621 through a rotating shaft 623, and the rotating shaft 623 and the end structures of the upper and lower rods constitute a rotating mechanism capable of rotationally locking the bearing frame. Thus, when the upper rod 621 is pulled out, the wall surface of the receiving opening of the upper rod opposite to the end of the lower rod is rotated to abut against the vertical plane of the end of the lower rod, and the inclined surface of the upper rod is beneficial to limit the relative rotation of the upper rod and the lower rod, so that the upper rod 621 can be locked in a 90-degree or approximately 90-degree upward state. Only when an external force is applied, the upper rod 621 can rotate along the inclined surface and the arc surface until the upper rod and the lower rod are in a horizontal state, and at the moment, the upper rod 621 can be retracted into the outer tube 61 of the bearing frame. The spacing between the outer tube 61 and the telescopic rod 62 of the loading frame can be realized by a conventional telescopic rod positioning mode, such as a conventional spacing hole arranged on the outer tube and a spacing pin arranged on the telescopic rod, and the spacing is not specifically expanded here.

When the folding table is unfolded, the wheels 31 on the pulley members 3 are folded on the back of the table board 100, and when the table is used, as shown in fig. 1-5; when the telescopic folding table is folded, the wheels 31 on the pulley members 3 extend out of the table top, and the pull rods 5 are pulled out, so that the table can be pushed or pulled, as shown in fig. 9. If something is to be moved at the same time, the two loading ledges 6 are pulled out and the article is hung or placed on the loading ledges, as is shown in fig. 10. Therefore, the folding table has multiple purposes, and the table and the objects can be moved easily and laborsavingly.

In addition, the two main panels of the traditional table are buckled and fixed by two plastic clamping heads after being folded in half, and the folding table can be used as a trolley, and objects, such as four chairs, are placed on a bearing frame to form a set of one table and four chairs, so that one person can finish dragging. Thus, the plastic clip alone is not sufficient to hold the two main panels together, and the weight of four chairs is not possible. For this purpose, the retractable folding table is additionally provided with a mechanical structure between the first and second main panels 1a and 1b, and the mechanical structure can adopt a locking mechanism (the first main panel 1a is not shown) as shown in fig. 11 and 17. The locking mechanism is arranged at the position adjacent to the first abdicating notch 11a and the second abdicating notch 11b and mainly comprises a lock catch 72 and a lock column 71, and a clamping groove is arranged on the lock catch 72 and can be used for clamping the lock column 71; the lock catch 72 is hinged on the lock catch seat 73 and can rotate, and the lock catch seat 73 is fixed on the second main panel 1b through a screw; the lock posts 71 are provided on the first main panel 1a and may be riveted directly to the crosspiece of the first carrier 6 a. When in operation, the lock catch 72 is pulled by hand to complete locking or unlocking, the operation is convenient, so that the locking mechanism can firmly lock the first main panel and the second main panel, the trouble that the two main panels are easy to be separated after bearing objects is solved, and the locking mechanism is not exposed at the edge of the table and can not influence the aesthetic property of the table. In addition, when the folding table is packed and transported, the movable panel and the two wheels can be locked in the first main panel 1a and the second main panel 1b by the locking mechanism and fixed without falling out, as shown in fig. 19. However, the above is only one preferred embodiment of the locking mechanism, and the locking mechanism can be modified in structure without being limited thereto.

Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A retractable table top of a folding table comprises a first main panel and a second main panel which can be mutually butted, and is characterized in that: also comprises

The movable panel is movably arranged between the first main panel and the second main panel, and the left side part and the right side part of the movable panel are respectively butted with the side parts of the first main panel and the second main panel;

and the two sides of the back of the first main panel and the second main panel are respectively provided with a sliding rail which can be in sliding fit with the supporting frame at the upper part of the table frame of the folding table.

2. A retractable table top for a folding table as claimed in claim 1 wherein: two or more than two sliding grooves are arranged at intervals in the length direction of the sliding rail, and the length of each sliding groove is not less than one half of the length of the movable panel.

3. A retractable table top for a folding table as claimed in claim 1 wherein: the first main panel, the second main panel and the movable panel are hollow blow molding panels, grooves and lugs distributed at intervals are formed in the left side portion and the right side portion of the movable panel, after the movable panel is in butt joint with the first main panel and the second main panel, the lugs on the movable panel are respectively embedded with the grooves on the first main panel and the second main panel, and the grooves on the movable panel are respectively embedded with the lugs on the first main panel and the second main panel.

4. A retractable table top for a folding table as claimed in claim 1 wherein: the slide rail is a strip-shaped plate which can be arranged between the supporting frame and the side part of the first main panel and between the supporting frame and the side part of the second main panel, and can slide back and forth relative to the supporting frame along with the first main panel and the second main panel respectively.

5. A retractable table top for a folding table as claimed in claim 1 wherein: the back of the movable panel is provided with a clamping piece which can be clamped on a table frame of the folding table.

6. A retractable table top for a folding table as claimed in claim 1 wherein: at least one corner of the first main panel and the second main panel is provided with a jack penetrating through the panels, and the jack is provided with a plug cover.

7. A retractable table top for a folding table as claimed in any one of claims 1 to 6 wherein: a pull rod is arranged on the back of the second main panel, and the pull rod can extend out of the second main panel in a pulling mode; correspondingly, a second abdicating notch for pulling out the pull rod is arranged on the second main panel.

8. A retractable table top for a folding table as claimed in claim 7 wherein: the back of the first main panel is provided with a bearing frame, the bearing frame can extend out of the first main panel in a drawing mode, and the bearing frame is rotationally locked in a state of being capable of erecting objects through a rotating mechanism; correspondingly, a first abdicating notch for the bearing frame to be pulled out is arranged on the first main panel.

9. A retractable table top for a folding table as claimed in claim 7 wherein: the pull rod adopts a pull rod structure of a conventional draw-bar box and comprises a pair of pull rod outer tubes fixed on the back of the second main panel, a pull rod telescopic rod is assembled in each pull rod outer tube, a handle is arranged at the upper end of each pull rod telescopic rod, a button is arranged on each handle, and the button controls the telescopic positioning of the pull rod telescopic rods.

10. A retractable table top for a folding table as claimed in claim 8 wherein: the bearing frame is of a U-shaped structure and comprises a pair of parallel outer tubes of the bearing frame, and telescopic rods of the bearing frame which can be telescopically positioned are assembled in the outer tubes of the bearing frame; the telescopic rod of the bearing frame is U-shaped, and the rod body of the bearing frame is provided with the rotating mechanism.

11. A retractable table top for a folding table as claimed in claim 10 wherein: bear the frame telescopic link adopt the upper boom and two lower arms of components of a whole that can function independently to be connected and constitute, the upper boom be the U-shaped, its both ends pass through respectively rotary mechanism connect a lower arm, wherein the tip of lower arm is the platykurtic after both sides are cut flat, and the outer fringe face has along the ascending vertical plane of lower arm length direction, inclined plane and arcwall face according to the preface, correspondingly, the tip centre of upper boom be equipped with the mouth that holds, the lower arm tip insert and hold in the mouth and connect through the pivot, constitute by the end structure of this pivot and upper and lower arm rotary locking's rotary mechanism can bear the frame.

12. A retractable table top for a folding table as claimed in claim 8 wherein: the first main panel and the second main panel are respectively provided with a lock catch and a lock column which can be mutually locked, and the lock catch is rotatably arranged.

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