阅读说明：本技术 一种多功能学生用桌 (multifunctional desk for students ) 是由 臧文铮 于 2018-05-29 设计创作，主要内容包括：本发明公开了一种多功能学生用桌,桌面左右两端下方分别安装有一对左立柱和一对右立柱,每个立柱下方均铰接有支腿,左支腿上的铰接轴位于与其对应的左挂杆上的铰接轴左下方,左支腿和左挂杆之间铰接有第一左支持盒、第二左支持盒；右支腿和右挂杆之间铰接有第一右支持盒、第二右支持盒和第三右支持盒；左支腿和桌面之间、右支腿和桌面之间还设置有支撑装置。通过该装置,可以方面的对学习桌的支腿进行收纳,收纳以后的各个零件可以叠放在一起,方便携带；同时在展开时,容纳盒较多,可以置放学习用的各种图书、书包等。(The invention discloses a multifunctional student desk, wherein a pair of left upright posts and a pair of right upright posts are respectively arranged below the left end and the right end of a desktop, a support leg is hinged below each upright post, a hinge shaft on each left support leg is positioned below the left side of a hinge shaft on a corresponding left hanging rod, and a first left support box and a second left support box are hinged between each left support leg and the corresponding left hanging rod; a first right supporting box, a second right supporting box and a third right supporting box are hinged between the right supporting leg and the right hanging rod; and a supporting device is also arranged between the left supporting leg and the desktop and between the right supporting leg and the desktop. By the aid of the device, the supporting legs of the learning table can be conveniently stored, and stored parts can be stacked together and are convenient to carry; meanwhile, when the foldable bookshelf is unfolded, the accommodating box is more, and various books, schoolbag and the like for study can be placed.)

1. A multi-functional student uses table which characterized in that: comprises a desktop, a pair of left upright posts and a pair of right upright posts are respectively arranged below the left end and the right end of the desktop, a left leg is hinged below each left upright post, the hinged shaft of the left upright post and the left leg is positioned at the right side of the left upright post, a right leg is hinged below each right upright post, the hinged shaft of the right upright post and the right leg is positioned at the left side of the right upright post,

the left upright post is provided with a left hinge block and a left hinge block, the left hinge block is hinged to one end of a left first support box, the left hinge block is hinged to one end of a left second support box, a left hanging rod is hinged to the lower portion of the left end of the tabletop, the middle of the left hanging rod is hinged to the other end of the left hinge block, the lower end of the left hanging rod is hinged to the other end of the left second support box, the left hanging rod is parallel to a left leg, the tabletop, the left first support box and the left second support box are parallel to each other, and a hinge shaft on the left leg is located below the left hinge shaft on the left hanging rod corresponding to the hinged shaft;

The left side of the right upright post is further provided with a first right hinging block, a second right hinging block and a third right hinging block which are sequentially arranged from top to bottom, the first right hinging block is hinged with one end of a first right supporting box, the second right hinging block is hinged with one end of a second right supporting box, the third right hinging block is hinged with one end of a third right supporting box, the upper end of a right hanging rod is hinged with the other end of the first right hinging block, the middle part of the right hanging rod is hinged with the other end of the second right supporting box, the lower end of the right hanging rod is hinged with the other end of the third right supporting box, the right hanging rod is parallel to a right supporting leg, the first right supporting box, the second right supporting box and the third right supporting box are parallel to each other, the lower bottom surface of the third right supporting box is flush with the ground when the third right supporting box is in a horizontal position, and the hinging shaft on the right supporting leg is positioned below the hinging shaft on the right hanging;

The lower portions of two sides of the table top are hinged to one end of a first supporting rod, the upper portions of the left supporting rod and the right supporting rod are hinged to one end of a second supporting rod respectively, the other end of the first supporting rod is hinged to the other end of the second supporting rod at a corresponding position, the cross sections of the first supporting rod and the second supporting rod are of groove structures with one sides open, at least one extension spring is arranged in a groove of the first supporting rod, one end of each extension spring is connected with the first supporting rod, and the other end of each extension spring is connected with the second supporting rod.

2. a multifunctional student desk according to claim 1, wherein: the desktop is divided into a lower desktop and an upper desktop, the upper desktop comprises a left turning plate and a right turning plate, the left end of the left turning plate is hinged with the left end of the lower desktop, the right end of the right turning plate is hinged with the right end of the lower desktop,

a left outer hook rod is hinged to the outer side of the left support leg, left hook protrusions are further arranged on two sides of the left turnover plate, and hooks at the outer end of the left outer hook rod correspond to the left hook protrusions in position;

the outside of right landing leg articulates there is right outer couple pole, right side turns over board both sides and still is provided with right couple arch, the couple of right outer couple pole outer end and right couple protruding position are corresponding.

3. A multifunctional student desk according to claim 2, wherein: the turnover frame is arranged above the left turning plate and the right turning plate and comprises a vertical plate, a flat plate and two vertical rods, turnover frame grooves are formed in the left turning plate and the right turning plate and comprise upper grooves and lower grooves, the lower grooves are arranged in the upper grooves, left bosses and right bosses are formed on two sides of the lower grooves, the outer sides of the upper grooves are hinged to one ends of the vertical plate, hinged lugs are connected to the inner sides of two ends of the middle of the vertical plate, two ends of the outer sides of the lower grooves are hinged to the two vertical rods respectively, the upper ends of the vertical rods are hinged to two ends of one side of the flat plate, two ends of the other side of the flat plate are hinged to the two hinged lugs, the appearance of the vertical plate is matched with the shape of the upper grooves, the height of the vertical rods is matched with the width of the lower grooves, and the width of.

4. A multifunctional student desk according to claim 3 wherein: the upper desktop further comprises a middle turning plate, the middle turning plate is located between the left turning plate and the right turning plate, the middle turning plate comprises a front turning plate and a rear turning plate, one end of the rear turning plate is hinged to the lower desktop, the other end of the rear turning plate is hinged to one end of the front turning plate, steps are arranged on two sides of the other end of the front turning plate, multiple groups of inclined grooves are arranged on two sides of the position, corresponding to the lower desktop and the rear turning plate, of the lower desktop, the inclined grooves are used for accommodating the steps, the front turning plate is hinged to the rear turning plate through hinges, the hinges are arranged on two sides of the front turning plate, and when the front turning plate and the rear turning plate are located in the horizontal position.

5. A multifunctional student desk according to claim 4 wherein: stop grooves are formed in the outer ends of the steps, and stop protrusions matched with the stop grooves are arranged in the inclined grooves.

6. A multifunctional student desk according to claim 4 wherein: a first rubber pad is fixedly laid above the front turning plate and the rear turning plate, a second rubber pad is fixedly laid above the lower desktop at a position corresponding to the position of the front turning plate, and an elastic rubber block is mounted at the end part of the front turning plate between the two steps.

7. A multifunctional student desk according to claim 6 wherein: the middle part of the outer end of the front turning plate is provided with a buckle groove penetrating through an elastic rubber block, a first jaw accommodating groove is arranged on the lower desktop and corresponds to the position of the buckle groove, a lifting buckle is arranged in the buckle groove and comprises a buckle backing plate, buckle lug plates, a buckle rotating shaft, a buckle and a coil spring, the buckle backing plate is arranged in the buckle groove through a screw, a pair of buckle lug plates are fixedly connected with the buckle backing plate, a buckle rotating shaft is arranged between the two buckle lug plates, the coil spring penetrates through the buckle rotating shaft, the buckle is further arranged on the buckle rotating shaft in a penetrating manner, the buckle is provided with a lifting part and a clamping claw part, the lifting part extends towards the opening direction of the buckle groove, the clamping claw part is clamped in the first jaw accommodating groove, and a second jaw accommodating groove is also arranged on one side of a rear turning plate lower plane and positioned at a rear turning hinge shaft, when the front turning plate and the rear turning plate are both in vertical positions, the clamping jaws are arranged in the second jaw accommodating grooves.

8. A multifunctional student desk according to claim 7, wherein: the bolt assembly is installed to left side board and right side board outer end, the bolt assembly includes casing, slide, bolt axle, slide and bolt axle screwed connection, just both sides between slide and the bolt axle form the guide way, set up parallel arrangement's slide groove and bolt axle slot on the casing, still seted up the direction arch between slide groove and the bolt axle slot, the slide groove suits with slide cross sectional shape, bolt axle slot suits with bolt axle cross sectional shape, the direction arch suits with guide way cross sectional shape, the bolt hole has been seted up with the corresponding department in bolt axle position to preceding board that turns over, and bolt hole diameter is greater than the diameter in bolt axle slot.

9. A multifunctional student desk according to claim 6 wherein: the left hook bulge and the right hook bulge have the same structure and respectively comprise a bottom screw, an external hook nail and an extension spring, wherein one end of the bottom screw is provided with an external thread, the other end of the bottom screw is provided with a cross groove, the external hook nail comprises a cross block, a spring fixing shaft, a hook shaft and a pinching block which are sequentially connected, and an anti-skidding groove is formed in the outer circular surface of the pinching block;

The left leg is provided with a left hook hole matched with the left hook bulge, the right leg is provided with a right hook hole matched with the right hook bulge, the left groove hanging hole and the right hook hole are identical in structure and respectively comprise a threaded hole part, a through hole part and a pinching operation groove part which are sequentially connected;

external screw thread and threaded hole portion on the bottom screw cooperate, the cross piece stretches into extremely in the cross groove, extension spring establishes the cover on the spring fixed axle, just extension spring's one end and bottom screw fixed connection, its other end and couple axle end connection, couple axle and through-hole portion clearance fit, it is located to hold between the fingers and takes operation groove portion to hold between the fingers the piece.

10. A multifunctional student desk according to claim 9 wherein: two still install on the right leg side and accomodate fixed couple, the one end of accomodating fixed couple is articulated with the right leg, and its other end is provided with accomodates the couple, it is protruding to install on the left leg to accomodate the couple, it is the same with the protruding structure of left couple to accomodate the protruding structure of couple, when left leg and right leg were accomodate, accomodate the couple of accomodating on the fixed couple and clamp and accomodate the couple arch.

Technical Field

The invention relates to the technical field of processing and manufacturing of seal heads of safety injection boxes, in particular to a multifunctional student desk.

Background

the desk is a common article for daily life of people, can be used in various occasions and environments, but due to the limitation of the occasions, a certain desk is made into various sizes so as to be suitable for special occasions to use, especially on teaching desks and chairs, the desk requires convenient use, multiple functions and convenient cleaning, and is particularly convenient for students to interactively communicate with teachers during teaching.

many of the existing tables are fixed and can not be folded, for example, the existing teaching tables have single function, and a department needs to be replaced if the existing teaching tables need to be used in art and other classes, which wastes time; and current teaching table is heavy, and bulky occupation space is inconvenient to be accomodate and carry the equipment, if the equipment is accomodate in the aspect, the containing box is few after the expansion, can not place the study article during the use.

Disclosure of Invention

the multifunctional student desk mainly solves the technical problems that in the prior art, the number of storage boxes is not large, and the number of the storage boxes is small, so that the multifunctional student desk is convenient to store, transport, expand and use and has a large number of the storage boxes.

the technical problem of the invention is mainly solved by the following technical scheme:

The invention relates to a multifunctional student desk, which comprises a desktop, wherein a pair of left upright posts and a pair of right upright posts are respectively arranged below the left end and the right end of the desktop, a left leg is hinged below each left upright post, a hinged shaft of the left upright post and the left leg is positioned on the right side of the left upright post, a right leg is hinged below each right upright post, a hinged shaft of the right upright post and the right leg is positioned on the left side of the right upright post,

The left upright post is provided with a left hinge block and a left hinge block, the left hinge block is hinged to one end of a left first support box, the left hinge block is hinged to one end of a left second support box, a left hanging rod is hinged to the lower portion of the left end of the tabletop, the middle of the left hanging rod is hinged to the other end of the left hinge block, the lower end of the left hanging rod is hinged to the other end of the left second support box, the left hanging rod is parallel to a left leg, the tabletop, the left first support box and the left second support box are parallel to each other, and a hinge shaft on the left leg is located below the left hinge shaft on the left hanging rod corresponding to the hinged shaft;

The left side of the right upright post is further provided with a first right hinging block, a second right hinging block and a third right hinging block which are sequentially arranged from top to bottom, the first right hinging block is hinged with one end of a first right supporting box, the second right hinging block is hinged with one end of a second right supporting box, the third right hinging block is hinged with one end of a third right supporting box, the upper end of a right hanging rod is hinged with the other end of the first right hinging block, the middle part of the right hanging rod is hinged with the other end of the second right supporting box, the lower end of the right hanging rod is hinged with the other end of the third right supporting box, the right hanging rod is parallel to a right supporting leg, the first right supporting box, the second right supporting box and the third right supporting box are parallel to each other, the lower bottom surface of the third right supporting box is flush with the ground when the third right supporting box is in a horizontal position, and the hinging shaft on the right supporting leg is positioned below the hinging shaft on the right hanging;

The lower portions of two sides of the table top are hinged to one end of a first supporting rod, the upper portions of the left supporting rod and the right supporting rod are hinged to one end of a second supporting rod respectively, the other end of the first supporting rod is hinged to the other end of the second supporting rod at a corresponding position, the cross sections of the first supporting rod and the second supporting rod are of groove structures with one sides open, at least one extension spring is arranged in a groove of the first supporting rod, one end of each extension spring is connected with the first supporting rod, and the other end of each extension spring is connected with the second supporting rod.

furthermore, the desktop is divided into a lower desktop and an upper desktop, the upper desktop comprises a left turning plate and a right turning plate, the left end of the left turning plate is hinged with the left end of the lower desktop, the right end of the right turning plate is hinged with the right end of the lower desktop,

a left outer hook rod is hinged to the outer side of the left support leg, left hook protrusions are further arranged on two sides of the left turnover plate, and hooks at the outer end of the left outer hook rod correspond to the left hook protrusions in position;

The outside of right landing leg articulates there is right outer couple pole, right side turns over board both sides and still is provided with right couple arch, the couple of right outer couple pole outer end and right couple protruding position are corresponding.

Furthermore, the turnover frame is arranged above the left turning plate and the right turning plate and comprises a vertical plate, a flat plate and two vertical rods, turnover frame grooves are formed in the left turning plate and the right turning plate and comprise upper grooves and lower grooves, the lower grooves are arranged in the upper grooves, left bosses and right bosses are formed on two sides of the lower grooves, the outer sides of the upper grooves are hinged to one end of the vertical plate, hinged lugs are connected to the inner sides of two ends of the middle of the vertical plate, two ends of the outer sides of the lower grooves are hinged to the two vertical rods respectively, the upper ends of the vertical rods are hinged to two ends of one side of the flat plate, two ends of the other side of the flat plate are hinged to the two hinged lugs, the appearance of the vertical plate is matched with the shape of the upper grooves, the height of the vertical rods is matched with the width of the lower grooves, and the width of the vertical.

Furthermore, the upper desktop further comprises a middle turning plate, the middle turning plate is located between the left turning plate and the right turning plate, the middle turning plate comprises a front turning plate and a rear turning plate, one end of the rear turning plate is hinged to the lower desktop, the other end of the rear turning plate is hinged to one end of the front turning plate, steps are arranged on two sides of the other end of the front turning plate, multiple groups of inclined grooves are arranged on two sides of the position, corresponding to the lower desktop and the rear turning plate, of the lower desktop, the inclined grooves are used for accommodating the steps, the front turning plate is hinged to the rear turning plate through hinges, the hinges are arranged on two sides of the front turning plate, and when the front turning plate and the rear turning plate are in horizontal positions, the hinges are located.

Furthermore, each outer end of each step is provided with a stop groove, and each inclined groove is provided with a stop bulge matched with the stop groove.

furthermore, a first rubber pad is fixedly laid above the front turning plate and the rear turning plate, a second rubber pad is fixedly laid above the lower desktop at a position corresponding to the position of the front turning plate, and an elastic rubber block is arranged at the end part of the front turning plate between the two steps.

Furthermore, the middle part of the outer end of the front turning plate is provided with a buckle groove penetrating through an elastic rubber block, a first jaw accommodating groove is formed in the lower desktop and corresponds to the position of the buckle groove, a lifting buckle is arranged in the buckle groove and comprises a buckle backing plate, buckle lug plates, a buckle rotating shaft, a buckle and a coil spring, the buckle backing plate is arranged in the buckle groove through a screw, a pair of buckle lug plates is fixedly connected with the buckle backing plate, a buckle rotating shaft is arranged between the two buckle lug plates, the coil spring penetrates through the buckle rotating shaft, the buckle is further penetrated through the buckle rotating shaft, the buckle is provided with a lifting part and a clamping claw part, the lifting part extends towards the opening direction of the buckle groove, the clamping claw part is clamped in the first jaw accommodating groove, and a second jaw accommodating groove is further formed in one side of a rear turning plate lower plane and positioned at a rear hinged shaft, when the front turning plate and the rear turning plate are both in vertical positions, the clamping jaws are arranged in the second jaw accommodating grooves.

Furthermore, the outer ends of the left turning plate and the right turning plate are respectively provided with a bolt component, each bolt component comprises a shell, a sliding plate and a bolt shaft, the sliding plate is connected with the bolt shaft through screws, guide grooves are formed in two sides between the sliding plate and the bolt shaft, a sliding plate groove and a bolt shaft groove are formed in the shell and are arranged in parallel, a guide bulge is further formed between the sliding plate groove and the bolt shaft groove, the sliding plate groove is matched with the cross section of the sliding plate, the bolt shaft groove is matched with the cross section of the bolt shaft, the guide bulge is matched with the cross section of the guide grooves, bolt holes are formed in the positions, corresponding to the positions of the bolt shafts, of the front turning plate, and the diameter of each bolt hole is larger than that of the bolt shaft.

furthermore, the left hook bulge and the right hook bulge have the same structure and respectively comprise a bottom screw, an external hook nail and an extension spring, wherein one end of the bottom screw is provided with an external thread, the other end of the bottom screw is provided with a cross groove, the external hook nail comprises a cross block, a spring fixing shaft, a hook shaft and a pinching block which are sequentially connected, and an anti-skidding groove is formed in the outer circular surface of the pinching block;

the left leg is provided with a left hook hole matched with the left hook bulge, the right leg is provided with a right hook hole matched with the right hook bulge, the left groove hanging hole and the right hook hole are identical in structure and respectively comprise a threaded hole part, a through hole part and a pinching operation groove part which are sequentially connected;

External screw thread and threaded hole portion on the bottom screw cooperate, the cross piece stretches into extremely in the cross groove, extension spring establishes the cover on the spring fixed axle, just extension spring's one end and bottom screw fixed connection, its other end and couple axle end connection, couple axle and through-hole portion clearance fit, it is located to hold between the fingers and takes operation groove portion to hold between the fingers the piece.

further, two still install on the right leg side and accomodate fixed couple, accomodate fixed couple one end and right leg articulated, its other end is provided with accomodates the couple, it is protruding to install on the left leg to accomodate the couple, accomodate couple protruding structure and left couple protruding structure the same, when left leg and right leg were accomodate, accomodate the couple of accomodating on the fixed couple and clamp and accomodate the couple arch.

Compared with the prior art, the invention has the advantages that:

General left stand and right stand length difference when needs are accomodate, if left stand is shorter than the length of right stand, the left branch leg is at first accomodate, when the left branch leg is accomodate, drive first left branch and support the box with the second and accomodate, because the articulated shaft all is located the right side of left branch leg and left stand, when the left branch leg is accomodate to the level, first left branch is supported the box, the left branch of second is supported the box and is all accomodate on left branch leg upper portion, then left peg is accomodate again and is supported box top in first left branch and the left branch of second.

then accomodate the right branch leg, when the right branch leg was accomodate, drive first right supporting box, second right supporting box and third right supporting box and accomodate, first right supporting box, second right supporting box and third right supporting box are accomodate in right branch leg top, and the right peg is accomodate again in supporting the box top, and right supporting box and right peg can be located left branch leg below also can be located between two left branch legs, save space.

When the left supporting box is unfolded, the left supporting box is supported by the left hanging rod and the left supporting leg which are hung below the desktop, one end of the right supporting box is supported by the right supporting leg, and the third right supporting box is directly attached to the bottom surface when the left supporting box is unfolded, so that all the right supporting boxes are supported by combining the right hanging rod;

Simultaneously, every landing leg is supported jointly to first bracing piece, second bracing piece and extension spring, supports the landing leg that corresponds when the landing leg expandes on the one hand, and the bracing piece also can contract when on the other hand landing leg is packed up, and extension spring is used for helping to accomodate the landing leg, and this structure is prior art, and it is more on its product market, does not apply here and states.

by the aid of the device, the supporting legs of the learning table can be conveniently stored, and stored parts can be stacked together and are convenient to carry; meanwhile, when the foldable bookshelf is unfolded, the accommodating box is more, and various books, schoolbag and the like for study can be placed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the multi-functional student desk of the present invention in an unfolded configuration;

FIG. 2 is a schematic view of the multifunctional student desk according to the present invention in a stored state;

FIG. 3 is a schematic view of the structure of the multifunctional desk of the present invention when the roll-over stand is stored;

FIG. 4 is a schematic view of the structure of the multifunctional desk of the present invention when the upper surface of the desk is stored

FIG. 5 is a schematic view of the structure of the flap of the multifunctional student desk of the present invention in a horizontal position;

FIG. 6 is a schematic view of the construction of the flap in the multifunctional student desk of the present invention in an inclined position;

FIG. 7 is a schematic view of the structure of the flap in the multifunctional student desk of the present invention in the upright position;

FIG. 8 is a first schematic view of the structure of the multifunctional student desk of the present invention at the position of the latch assembly;

FIG. 9 is a second schematic view of the multifunctional student desk of the present invention showing the location of the peg assembly;

FIG. 10 is a schematic view of the structure of the multifunctional desk of the present invention at the position of the lifting buckle

fig. 11 is a sectional view of a left hooking protrusion in the multifunctional student desk of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.

referring to fig. 1 and 2, the multifunctional student desk provided by the invention comprises a desktop 1, wherein a pair of left upright posts 21 and a pair of right upright posts 31 are respectively installed below the left end and the right end of the desktop 1, a left leg 22 is hinged below each left upright post 21, a hinge shaft between the left upright post 21 and the left leg 22 is located on the right side of the left upright post 21, a right leg 32 is hinged below each right upright post 31, a hinge shaft between the right upright post 31 and the right leg 32 is located on the left side of the right upright post 31, in the embodiment, the left upright post 21 is shorter than the right upright post 31, so that the left leg 22 and the right leg 32 are conveniently located on different planes when being accommodated;

A first left hinging block 23 and a second left hinging block 24 are further mounted on the right side of the left upright post 21, the first left hinging block 23 is hinged to one end of a first left supporting box 25, the second left hinging block 24 is hinged to one end of a second left supporting box 26, a left hanging rod 27 is further hinged below the left end of the tabletop 1, the middle part of the left hanging rod 27 is hinged to the other end of the first left hinging block 23, the lower end of the left hanging rod 27 is hinged to the other end of the second left supporting box 26, the left hanging rod 27 is parallel to a left leg, the tabletop 1, the first left supporting box 25 and the second left supporting box 26 are parallel to each other, and a hinging shaft on the left leg 22 is located below a left hinging shaft on the left hanging rod 27 corresponding to the hinging shaft;

A first right hinging block 33, a second right hinging block 34 and a third right hinging block 35 which are sequentially arranged from top to bottom are further arranged on the left side of the right upright column 31, the first right hinging block 33 is hinged with one end of a first right supporting box 36, the second right hinging block 34 is hinged with one end of a second right supporting box 37, the third right hinging block 35 is hinged with one end of a third right supporting box 38, the upper end of a right hanging rod 39 is hinged with the other end of the first right hinging block 33, the middle part of the right hanging rod 39 is hinged with the other end of the second right supporting box 37, the lower end of the right hanging rod 39 is hinged with the other end of the third right supporting box 35, the right hanging rod 39 is parallel to the right leg 32, the first right supporting box 36, the second right supporting box 37 and the third right supporting box 38 are parallel to each other, when the third right supporting box 38 is in a horizontal position, the lower bottom surface of the third right supporting box is flush with the ground, and the hinge shaft on the right supporting leg 32 is positioned at the right lower part of the hinge shaft on the right hanging rod 39 corresponding to the third right supporting box;

The utility model discloses a desktop, including desktop 1, left branch landing leg 22, right branch landing leg 32, first bracing piece 41, second bracing piece 42, first bracing piece 41, second bracing piece 41, first bracing piece 41, second bracing piece 42, first bracing piece 41, first bracing piece 42, first bracing piece 41, first bracing piece 41, the other end of first.

Generally, left stand 21 and right stand 31 are different in length, and when needs were accomodate, if left stand 21 is shorter than the length of right stand 31, left leg 22 was accomodate at first, and when left leg 22 was accomodate, drive first left support box 25 and the left side of second support box 26 and accomodate, because the articulated shaft all is located the right side of left leg 22 and left stand 21, when left leg 22 was accomodate to the level, first left support box 25, the left side of second supported box 26 all was accomodate on left leg 22 upper portion, then left peg 27 was accomodate again in first left support box 25 and the left side of second supported box 26 top.

Then accomodate right leg 32, when right leg 32 was accomodate, drive first right supporting box 36, second right supporting box 37 and third right supporting box 38 and accomodate, first right supporting box 36, second right supporting box 37 and third right supporting box 38 are accomodate in right leg 32 top, and right peg 39 is accomodate again in supporting the box top, and right supporting box and right peg 39 can be located left leg 22 below also can be located between two left legs 22, save space.

when the table top is unfolded, the left supporting box is supported by the left hanging rod 27 and the left supporting leg 22 which are hung below the table top 1, one end of the right supporting box is supported by the right supporting leg 32, and the third right supporting box 38 is directly attached to the bottom surface when the table top is unfolded, so that all the right supporting boxes are supported by combining the right hanging rod;

Meanwhile, each supporting leg is supported by the first supporting rod 41, the second supporting rod 42 and the extension spring together, on one hand, the corresponding supporting leg is supported when the supporting leg is unfolded, on the other hand, the supporting rod can also be retracted when the supporting leg is folded, the extension spring is used for assisting in accommodating the supporting leg, the structure is the prior art, and more supporting legs are available in the product market, and the description is not provided here.

referring to fig. 3 and 4, in a preferred embodiment of the present invention, the table top 1 is divided into a lower table top 11 and an upper table top 12, the upper table top 12 includes a left turning plate 121 and a right turning plate 122, the left end of the left turning plate 121 is hinged to the left end of the lower table top 11, the right end of the right turning plate 122 is hinged to the right end of the lower table top 11,

A left outer hook rod 13 is hinged to the outer side of the left support leg 22, left hook protrusions 14 are further arranged on two sides of the left turning plate 121, and hooks at the outer end of the left outer hook rod 13 correspond to the left hook protrusions 14 in position;

The outside of right landing leg 32 articulates there is right outer couple pole 15, right side turns over board 122 both sides and still is provided with right couple arch 16, the couple of right outer couple pole 15 outer end and the protruding 16 positions of right couple correspond.

The left turning plate 121 and the right turning plate 122 can be turned around the hinge shaft, and are stored and opened, the left outer hook rod 13 can be used for supporting the left turning plate 121, and the right outer hook rod 15 can be used for supporting the right turning plate 122. In this embodiment, the width of the left and right turning plates 121 and 122 is half of the width of the lower tabletop 11, and the left and right turning plates 121 and 122 can just cover the lower tabletop 11 when being stored.

Preferably, a roll-over stand 124 is arranged above the left turning plate 121 and the right turning plate 122, the roll-over stand 124 includes a vertical plate 1241, a flat plate 1242 and two vertical rods 1243, roll-over stand slots 125 are arranged on the left turning plate 121 and the right turning plate 122, each roll-over stand slot 125 includes an upper groove 1251 and a lower groove 1252, the lower groove 1252 is arranged in the upper groove 1251, a left boss 1253 and a right boss 1254 are formed on two sides of the lower groove 1252, the outer side of the upper groove 1251 is hinged to one end of the vertical plate 1241, the inner sides of two ends of the middle part of the vertical plate 1241 are connected to hinge lugs 1244, two ends of the outer side of the lower groove 1252 are hinged to the two vertical rods 1243, the upper ends of the vertical rods 1243 are hinged to two ends of one side of the flat plate 1242, two ends of the other side of the flat plate 1242 are hinged to the two hinge lugs 1244, the vertical plate 1241 has a shape adapted to the shape of the, and the width of the vertical plate 1241 is smaller than the height of the vertical rod 1243. If more books need to be placed by the students, the turnover frames on the left turning plate 121 and the right turning plate 122 can be opened, the turnover frames are of bookshelf structures, books or other articles can be accommodated, and a limiting mechanism can be additionally arranged on the turnover frame 124, so that the turnover frame 124 can be conveniently fixed when being unfolded. The number of the limiting mechanisms in the prior art is large, and the description is not repeated here.

In another preferred embodiment of the present invention, referring to fig. 3 to 7, the upper table top 12 further includes a middle turning plate 123, the middle turning plate 123 is located between the left turning plate 121 and the right turning plate 122, the middle turning plate 123 includes a front turning plate 1231 and a rear turning plate 1232, one end of the rear turning plate 1232 is hinged to the lower table top 11, the other end of the rear turning plate 1232 is hinged to one end of the front turning plate 1231, steps 1233 are provided on two sides of the other end of the front turning plate 1231, and two sides of the position of the lower table top 11 corresponding to the position of the rear turning plate 1232 are provided with a plurality of sets of inclined grooves 111, the inclined grooves 111 are used for accommodating the steps 1233, the front turning plate 1231 is hinged to the rear turning plate 1232 through hinges, the hinges are provided on two sides of the front turning plate 1231, and the rear turning plate 1232 are located in one set of the inclined grooves 111. Due to the front turning plate 1231 and the rear turning plate 1232, the front turning plate 1231 can be turned and clamped into the inclined groove 111, then the inclined front turning plate 1231 can be used for placing books in an inclined manner, and the inclined angle of the front turning plate 1231 can be adjusted by the inclined grooves 111. And the step 1233 cooperates with the inclined groove 111 without occupying too much desktop space.

preferably, a stop groove 1234 is formed at an outer end of each step 1233, and a stop protrusion 112 matched with the stop groove 1234 is disposed in each inclined groove 111. By the engagement of the stop groove 1234 with the stop protrusion 112, the front panel 1231 is fixed and fastened when it is tilted.

optimally, a first rubber pad 1235 is fixedly laid above each of the front turning plate 1231 and the rear turning plate 1232, a second rubber pad 113 is fixedly laid above the lower tabletop 11 at a position corresponding to the position of the front turning plate 1231, and an elastic rubber block 1236 is mounted at the end of the front turning plate between the two steps 1233. The first rubber cushion 1235 and the second rubber cushion 113 are used to improve the quality of the table top, and are not too hard when used. When the front turning plate 1231 is horizontal, the elastic rubber block 1236 rebounds to keep the front turning plate 1231 in a rectangular state, when the front turning plate 1231 is obliquely placed, the desktop between the two stop protrusions 112 compresses the elastic rubber block 1236, and the stop protrusions 112 at the two ends are deeply inserted into the oblique groove 111.

referring to fig. 8, in another preferred embodiment of the present invention, a buckle groove 1237 penetrating through an elastic rubber block 1236 is formed in the middle of the outer end of the front turning plate 1231, a first jaw receiving groove 114 is formed on the lower table top 11 and at a position corresponding to the buckle groove 1237, a lifting buckle 5 is installed in the buckle groove 1237, the lifting buckle 5 includes a buckle backing plate 51, buckle ear plates 52, a buckle rotating shaft 53, a buckle 54, and a coil spring 55, the buckle backing plate 51 is installed in the buckle groove 1237 by a screw, a pair of buckle ear plates 52 is fixedly connected with the buckle backing plate 51, a buckle rotating shaft 53 is installed between the two buckle ear plates 52, the buckle rotating shaft 53 is provided with a coil spring 55, the buckle 54 is further provided with the buckle 54, the buckle 54 is provided with a lifting portion 541 and a pawl portion 542, the lifting portion 541 extends toward the opening direction of the buckle groove 1237, the clamping claw portion 542 is clamped in the first clamping claw accommodating groove 114, a second clamping claw accommodating groove 126 is further formed in the lower plane of the rear turning plate 1232 and located on one side of a hinge shaft of the rear turning plate 1232, and when the front turning plate 1231 and the rear turning plate 1232 are both located at vertical positions, the clamping claw 54 is clamped in the second clamping claw accommodating groove 126. When the front turning plate 1231 and the rear turning plate 1232 are stored, the claw part 542 of the lifting buckle 5 is clamped in the first claw receiving groove 114, so that the lifting buckle is convenient to fix, when the front turning plate 1231 and the rear turning plate 1232 are turned to the final position, the claw part 542 of the lifting buckle 5 is clamped in the second claw receiving groove 126, and the front turning plate 1231 and the rear turning plate 1232 are buckled and fixed together back to back.

Referring to fig. 9 and 10, in another preferred embodiment of the present invention, a latch assembly 6 is mounted at outer ends of the left and right turning plates 121 and 122, the latch assembly 6 includes a housing 61, a sliding plate 62 and a latch shaft 63, the sliding plate 62 is connected with the latch shaft 63 by a screw, guide grooves 64 are formed at two sides between the sliding plate 62 and the latch shaft 63, a sliding plate groove 65 and a latch shaft groove 66 are formed in the housing 61, the sliding plate groove 65 and the latch shaft groove 66 are arranged in parallel, a guide protrusion 67 is further formed between the sliding plate groove 65 and the latch shaft groove 66, the sliding plate groove 65 is adapted to the cross-sectional shape of the sliding plate 62, the latch shaft groove 66 is adapted to the cross-sectional shape of the latch shaft 63, the guide protrusion 67 is adapted to the cross-sectional shape of the guide groove 64, a latch hole 68 is formed at a position of the front turning plate 1231 corresponding to the position of the latch shaft 63, and the. When the left turning plate 121, the right turning plate 122 and the middle turning plate 123 are accommodated, the middle turning plate 123 can be firstly buckled with the lower desktop 11, and then the left turning plate 121, the right turning plate 122 and the middle turning plate 123 can be conveniently fixed through the bolt assembly 6, so that the whole upper desktop 12 is fixed.

referring to fig. 11, the left hooking protrusion 14 and the right hooking protrusion 16 have the same structure, and both include a bottom screw 141, an external hooking nail 142, and an extension spring 143, one end of the bottom screw 141 has an external thread 1411, and the other end thereof has a cross slot 1412, the external hooking nail 142 includes a cross block 1421, a spring fixing shaft 1422, a hooking shaft 1423, and a pinching block 1424, which are connected in sequence, and an anti-slip slot 1425 is formed on an outer circumferential surface of the pinching block 1424;

The left leg 22 is provided with a left hook hole 221 matched with the left hook bulge 14, the right leg 32 is provided with a right hook hole 321 matched with the right hook bulge 16, the left groove hole 221 and the right hook hole 321 have the same structure and respectively comprise a threaded hole portion 2211, a through hole portion 2212 and a pinching operation groove portion 2213 which are sequentially connected;

The external thread 141 on the bottom screw 141 is matched with the thread hole portion 2211, the cross block 1421 extends into the cross groove 1412, the extension spring 143 is sleeved on the spring fixing shaft 1422, one end of the extension spring 143 is fixedly connected with the bottom screw, the other end of the extension spring 143 is connected with the end of the hook shaft 1423, the hook shaft 1423 is in clearance fit with the through hole portion 2212, and the pinching block 1424 is located in the pinching operation groove portion 2213.

when the external hook nail 142 is used, the antiskid groove 1425 can be gripped by a hand to pull out the external hook nail 142, then the left external hook rod 13 and the right external hook rod 16 can be hung on the hook shaft 1423 of the external hook nail 142, when the external hook rods are taken out, the extension spring 143 contracts, the external hook nail 142 is retracted into the left hook hole 221 or the right hook hole 321, when the bottom screw 141 needs to be screwed in or out of the hook hole, only the external hook nail 142 needs to be rotated, and the cross block 1421 can drive the cross groove 1412 to rotate.

preferably, two of the side surfaces of the right leg 32 are further provided with a storage fixing hook 322, one end of the storage fixing hook 322 is hinged to the right leg 32, the other end of the storage fixing hook 322 is provided with a storage hook 323, the left leg 22 is provided with a storage hook bulge 222, the structure of the storage hook bulge 222 is the same as that of the left hook bulge 14, and when the left leg 22 and the right leg 32 are stored, the storage hook 323 on the storage fixing hook 322 is clamped on the storage hook bulge 222. When left leg 22 and right leg 32 are conveniently folded, left leg 22 and right leg 32 can be connected together, and the transportation is convenient.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.