CN215125318U - Elbow supporting device - Google Patents

Abstract

The utility model discloses an elbow strutting arrangement, its technical scheme main points are including connecting smooth and the backup pad in the table bottom, the backup pad becomes the setting of fan-shaped loop configuration, the one end and the backup pad of slide bar rotate to be connected, the backup pad can become to expand the setting around the table angle around the slide bar rotation in-process, the backup pad is provided with the rotation of slide bar one end of being connected and turns to the limit structure, turn to the limit structure including setting up the pivot in the backup pad, and set up the commentaries on classics hole on the slide bar, the pivot epirelief is equipped with the arch, be provided with the draw-in groove that is used for supplying protruding embedding on the lateral wall in commentaries on classics hole, rotate to holding at ordinary times with the desktop in the backup pad, thereby the draw-in groove can rotate through restriction arch and restrict the backup pad and rotate. The table corner area is expanded by arranging the fan-shaped annular supporting plate, the supporting area of the elbow in the transverse and longitudinal directions is increased, the supporting plate can rotate, slide and store the elbow to the bottom of the table plate, the space below the table plate is fully utilized, and the space of the table top is saved.

Description

Elbow supporting device

Technical Field

The utility model relates to an appurtenance, more specifically say, it relates to an elbow strutting arrangement.

Background

In daily study and work, a plurality of commonly used books or tools need to be stacked on the desktop of a common desk, so that the space of the desktop is greatly occupied, and the limited desktop space is easy to cause the elbow to hang in the air when in use, thereby not only being inconvenient for study and work, but also easily causing the problems of untidy sitting posture, labor waste and the like, and further causing serious diseases such as scoliosis, myopia and the like.

At present, chinese patent with publication number CN208318689U discloses a foldable elbow support, which comprises a support plate, a support arm, a sleeve, a screw rod and a fastening nut, wherein one end of the support arm is arranged at the middle position of the bottom of the support plate, the sleeve is fixed at the other end of the support arm, the screw rod vertically penetrates through the sleeve, the top end of the screw rod is fixed on a desk, and the fastening nut matched with the screw rod in a threaded manner is arranged on the screw rod at the lower part of the sleeve. Through setting up backup pad, support arm, sleeve, lead screw, fastening nut, for the elbow provides the support, fold paper through the setting and make the backup pad collapsible to become box-shaped, this utility model simple structure, convenient to use has the storing function. Although the length of the table top is extended through rotation, the elbow support can only meet the support of lateral movement of the elbow and cannot provide comprehensive support for free movement of the elbow.

In combination with the above, it is a problem contemplated by the present application to design an elbow support device that provides full support of the elbow.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims to provide an elbow supporting device, the device can overcome current elbow support and support the too single shortcoming of range to the elbow.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an elbow strutting arrangement sets up on the table, including connecting the slide bar in the table bottom and connecting the backup pad that supplies the elbow to support on the slide bar, the backup pad becomes fan-shaped loop configuration and sets up, the one end and the backup pad of slide bar rotate to be connected, the backup pad can become to expand the setting around the corner around the slide bar rotation in-process, the other end and the table of slide bar slide and be connected, the backup pad rotates the one end of being connected with the slide bar and is provided with the turn to the limit structure that is used for restricting backup pad rotation direction, the other end of backup pad slides and is connected with and rotates to hold bearing baffle that can just provide the support with the backup pad with the desktop butt at ordinary times with the table in the backup pad, turn to the limit structure and be used for driving backup pad pivoted pivot including setting up in the backup pad, And set up and be used for supplying the pivot to rotate the commentaries on classics hole of connecting on the slide bar, the pivot epirelief is equipped with the arch that is used for restricting the backup pad to turn to, the bottom of changeing the hole is connected with and is used for supplying protruding pivoted movable cavity, be provided with the draw-in groove that is used for supplying protruding embedding on the lateral wall in commentaries on classics hole, rotate to keeping at ordinary times with the desktop at the backup pad, thereby the draw-in groove can rotate the restriction backup pad through restriction arch and rotate, butt elastic component between pivot bottom and the movable cavity bottom.

Further, the table bottom is provided with the slide rail that is used for holding the slide bar, the slide rail extends the setting along the width direction of table, be provided with the limit that prevents the slide bar and drop from the slide rail on the slide bar and take off the piece.

Furthermore, be provided with the turning block in the backup pad, the turning block becomes the setting of strip structure, the one end and the pivot fixed connection of turning block, the other end and backup pad fixed connection, the distance size of pivot to desktop and the distance size looks adaptation of pivot to backup pad up end, the turning block can drive the backup pad along with the rotation of pivot and rotate to keeping level with the desktop.

Furthermore, the support plate comprises at least two plates, one of the plates is a rotating plate rotationally connected with the sliding rod, the other plate is a folding plate connected with the bearing baffle in a sliding manner, a rotating connection structure is arranged between the rotating plate and the folding plate and can drive the folding plate to rotate and fix the folding plate when the folding plate rotates to be level with the rotating plate, the rotating connection structure comprises hinges arranged on the rotating plate and the folding plate, the rotating plate and the folding plate can rotate along the hinges, the rotating connection structure further comprises a locking piece arranged on the folding plate and used for connecting the rotating plate and a lock hole arranged on the rotating plate and used for the locking piece to pass through, the locking piece comprises a lock head and a connecting rod axially connected with the lock head, the outer diameter of the connecting rod is smaller than that of the lock head, and the side wall of the lock hole is connected with the sliding baffle used for limiting the lock head to fall off, the tapered end is provided with the scarf towards the baffle direction of sliding, the baffle that slides corresponds towards the tapered end direction and is provided with the scarf, baffle one end of sliding is connected with and is used for the pulling to slide the pull rod that the lockhole was kept away from to the baffle, the cover is equipped with the spring on the pull rod, the spring can be close to the lockhole through its elasticity that resets promotion baffle that slides, set up the export that supplies pull rod one end to emerge on the rotor plate.

Furthermore, magnetic parts capable of attracting each other are arranged on the abutting surfaces of the rotating plate and the folding plate which rotate and fold.

Furthermore, hooks for hanging the object containing bag are respectively arranged on the side surfaces of the rotating plate and the folding plate close to the table corners.

Further, be provided with in the backup pad and be used for holding the thing cavity of putting of article, put the thing cavity opening setting and keep away from on the side at the table corner in the backup pad, and can dismantle the connection and be used for sealing the sealed apron of putting the thing cavity on putting the opening of thing cavity.

Furthermore, the upper end face of the supporting plate is made of transparent materials.

Furthermore, the sealing cover plate is hinged to one side of the opening end of the storage cavity, zipper teeth capable of being meshed with each other are arranged on the edge of the sealing cover plate and the edge of the opening of the storage cavity in a surrounding mode, and a pull head used for pulling the zipper teeth together is connected between the zipper teeth.

Further, sealed apron is connected with the side canvas with the both sides that one side of putting article cavity opening articulated corresponds, the side canvas can be when the pull head draws the zipper tooth, accomodate to putting in the article cavity.

To sum up, the utility model discloses following beneficial effect has: the table corner area is expanded by arranging the fan-shaped annular supporting plate, the supporting area of the elbow in the transverse and longitudinal directions is increased, the supporting plate can rotate, slide and store the elbow to the bottom of the table plate, the space below the table plate is fully utilized, and the space of the table top is saved.

Drawings

FIG. 1 is a schematic perspective view of an elbow support device in an expanded state;

FIG. 2 is a schematic perspective view of the elbow supporting device in a storage state;

FIG. 3 is a partial top view of an elbow support device in a deployed state;

FIG. 4 is a cross-sectional view of the rotating link;

FIG. 5 is a cross-sectional view of a steering limit feature

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is a partial structural view of the support plate.

Reference numerals: 1. a table plate; 11. a slide rail; 2. a slide bar; 21. hole turning; 22. a card slot; 221. a vertical slot; 222. a horizontal clamping groove; 23. a movable cavity; 24. an elastic member; 3. a support plate; 31. a rotating plate; 311. a rotating shaft; 312. a protrusion; 313. a magnetic member; 314. a lock hole; 315. a sliding baffle plate; 316. a pull rod; 317. a spring; 32. folding the board; 321. a load bearing baffle; 322. a locking member; 3221. a lock head; 3222. a connecting rod; 33. a hinge; 34. a storage cavity; 35. sealing the cover plate; 36. a zipper tooth; 37. a slider; 38. side canvas; 39. hooking; 4. and (6) rotating the block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1-7, an elbow supporting device is arranged on a table board 1 and comprises a sliding rod 2 connected to the bottom of the table board 1 and a supporting plate 3 connected to the sliding rod 2 and used for supporting an elbow, wherein the supporting plate 3 is arranged in a fan-shaped annular structure, one end of the sliding rod 2 is rotatably connected with the supporting plate 3, the supporting plate 3 can be unfolded around a table corner in the rotating process of the sliding rod 2, and the other end of the sliding rod 2 is connected with the table board 1 in a sliding mode. The arrangement of the sliding rod 2 can provide supporting force for the supporting plate 3 when the supporting plate 3 rotates to be level with the desktop. The supporting plate 3 is of a fan-shaped annular structure, the table corner can be expanded in a surrounding mode, so that the elbow can be supported by the supporting plate 3 in the transverse and longitudinal free movement, and the elbow supporting amplitude is greatly increased. The supporting plate 3 comprises an unfolding state and a storage state, can rotate around the sliding rod 2 when elbow supporting is not needed, and can be stored to the bottom of the table board 1 along with sliding of the sliding rod, the space below the table board 1 is fully utilized, and the space of the table top is saved.

The one end that backup pad 3 and slide bar 2 rotate to be connected is provided with the turn to the limit structure that is used for restricting backup pad 3 rotation direction, and the other end of backup pad 3 slides and is connected with and can just provide the bearing baffle 321 that supports for backup pad 3 with the desktop butt when backup pad 3 rotates to keeping level with table 1. The addition of the bearing baffle 321 can further increase the supporting force when the supporting plate 3 rotates to be flat with the desktop.

Turn to the limit structure and also can rotate to keeping at ordinary times with the desktop at backup pad 3 and provide the support to backup pad 3, turn to the limit structure and be used for driving backup pad 3 pivoted pivot 311 including setting up in backup pad 3, pivot 311 epirelief is equipped with the arch 312 that is used for limiting backup pad 3 to turn to, turn to the limit structure still including setting up the commentaries on classics hole 21 that is used for supplying pivot 311 to rotate the connection on slide bar 2, the bottom of changeing hole 21 is connected with and is used for supplying protruding 312 pivoted movable cavity 23, be provided with the draw-in groove 22 that is used for supplying protruding 312 embedding on changeing hole 21's the lateral wall, rotate to keeping at ordinary times with the desktop at backup pad 3, thereby draw-in groove 22 can rotate through limiting protruding 312 and limit backup pad 3 and rotate, butt elastic component 24 between pivot 311 bottom and the movable cavity 23 bottom.

The steering limiting structure limits the rotation direction of the support plate 3, so that the support plate 3 is fixed to rotate in the horizontal or vertical direction, and once the support plate 3 is rotated in place, the support plate 3 is in a fixed state, and steering can be changed only by external force. The shape of the slot 22 corresponds to the shape of the protrusion 312, and the depth dimension of the slot 22 may be greater than or equal to the length dimension of the protrusion 312. The locking groove 22 includes a vertical locking groove for fixing the support plate 3 in the unfolded state and a horizontal locking groove for fixing the support plate 3 in the stored state. When the supporting plate 3 turns from the storage state to the expansion state, the protrusion 312 on the rotating shaft 311 is pressed towards the bottom end of the movable cavity 23 by external force, so that the protrusion 312 is separated from the horizontal clamping groove, and at the moment, the elastic member 24 deforms and compresses; the rotating shaft 311 is rotated through external force, so that the protrusion 312 enters the vertical clamping groove, the elastic piece 24 loses the pressing force to reset at the moment, the outward thrust is generated on the rotating shaft 311, the protrusion 312 cannot rotate under the limitation of the clamping groove 22 due to the fact that the clamping groove 22 is consistent with the protrusion 312 in shape, the supporting plate 3 is fixed in an unfolding state or a containing state through the rotation of the fixed rotating shaft 311, and the stability of supporting force provided by the supporting plate 3 is improved.

To sum up, the utility model discloses a set up fan-shaped annular backup pad 3 and expanded table angle area, increased the elbow in horizontal, vertically go up the support area of free activity, backup pad 3 can rotate simultaneously and slide and accomodate to 1 bottom of table, make full use of 1 below space of table, practiced thrift the desktop space.

The bottom of the table board 1 is provided with a slide rail 11 for accommodating the slide bar 2, the slide rail 11 extends along the width direction of the table board 1, and the slide bar 2 is provided with a disengagement limiting piece for preventing the slide bar 2 from falling off from the slide rail 11. The slide rail 11 may be an existing product, such as a roller slide rail 11, a steel ball slide rail 11, or the like.

Be provided with turning block 4 on the backup pad 3, turning block 4 becomes the setting of bar structure, the one end and the pivot 311 fixed connection of turning block 4, the other end and backup pad 3 fixed connection, the distance size of pivot 311 to desktop and the distance size looks adaptation of pivot 311 to backup pad 3 up end, turning block 4 can drive backup pad 3 along with the rotation of pivot 311 and rotate to keeping level with the desktop. When the support plate 3 rotates along the slide rod 2 and the rotating block 4 rotates to be vertical along with the support plate 3, the support plate 3 is level with the tabletop; when turning block 4 rotates to the level along with the backup pad, backup pad 3 is located table 1 below, and at this moment, backup pad 3 can slide along with slide bar 2 and accomodate to table 1 bottom.

Backup pad 3 is including two at least boards, one of them board is for rotating the rotor plate 31 of being connected with slide bar 2, another board is for sliding the folded sheet 32 that is connected with bearing baffle 321, be provided with between rotor plate 31 and the folded sheet 32 and rotate connection structure, it can drive folded sheet 32 and rotate and fix folded sheet 32 when folded sheet 32 rotates to keeping flat with rotor plate 31 to rotate connection structure, it includes the hinge 33 that sets up on rotor plate 31 and folded sheet 32 to rotate connection structure, rotor plate 31 and folded sheet 32 can be followed hinge 33 and rotated. Make rotating plate 31 and folded sheet 32 can be folded through hinge 33, the storage space of backup pad 3 has been reduced, folded sheet 32 and rotating plate 31 are the fan-shaped annular structure of equal arc, the length dimension of folded sheet 32 is not more than the length dimension of rotating plate 31, make folded sheet 32 fold back on rotating plate 31, the height dimension of folded sheet 32 apart from 1 bottom of table is not less than the height dimension of rotating plate 31 apart from 1 bottom of table, thereby folded sheet 32 can accomodate to table 1 bottom along with rotating plate 31 more smoothly.

The rotating connection structure further comprises a locking member 322 arranged on the folding plate 32 and used for connecting the rotating plate 31, and a lock hole 314 arranged on the rotating plate 31 and used for allowing the locking member 322 to pass through, the locking member 322 comprises a locking head 3221 and a connecting rod 3222 axially connected with the locking head 3221, the outer diameter of the connecting rod 3222 is smaller than that of the locking head 3221, a sliding baffle 315 used for limiting the locking head 3221 to fall off the lock hole 314 is connected to the side wall of the lock hole 314 in a sliding manner, a diagonal plane is arranged in the direction of the locking head 3221 towards the sliding baffle 315, the diagonal plane is correspondingly arranged in the direction of the locking head 3221 towards the sliding baffle 315, one end of the sliding baffle 315 is connected with a pull rod 316 used for pulling the sliding baffle 315 to be away from the lock hole 314, a spring 317 is sleeved on the pull rod 316, the spring 317 can push the sliding baffle 315 to be close to the lock hole 314 through the reset elastic force thereof, and an outlet for allowing one end of the pull rod 316 to protrude is formed in the rotating plate 31.

The cooperation of the locking members 322 and the locking holes 314 can enable the folding plate 32 to be locked and not rotate any more when the folding plate 32 rotates to be flush with the rotating plate 31. The specific operation is as follows:

during the process that the folding plate 32 rotates along the hinge 33 in the direction parallel to the rotating plate 31, the lock head 3221 enters the lock hole 314, the inclined plane on the lock head 3221 abuts against the inclined plane on the sliding baffle 315, the lock head 3221 moves forward along with the continuous rotation of the folding plate 32, the sliding baffle 315 is pushed away, and the spring 317 on the pull rod 316 is compressed by extrusion deformation; when the locking head 3221 is completely immersed into the locking hole 314, since the outer diameter of the connecting rod 3222 is smaller than the outer diameter of the locking head 3221, the spring 317 loses the pressing force to reset, and pushes the sliding baffle 315 to reset. Since the sliding direction of the sliding stop 315 is perpendicular to the moving direction of the locking member 322, the locking head 3221 which is inserted into the locking hole 314 is restricted by the sliding stop 315 and cannot leave the locking hole 314 without an external force, so that the connection between the rotating plate 31 and the folding plate 32 is locked.

When the supporting plate 3 needs to be stored, the pull rod 316 protruding from the rotating plate 31 is pulled first, so that the sliding baffle 315 is driven to be away from the lock hole 314, the lock head 3221 loses the limitation of the sliding baffle 315, and therefore the folding plate 32 can be moved out of the lock hole 314 and can rotate along the hinge 33 to abut against the rotating plate 31.

In addition, the bearing baffle 321 and the folding plate 32 can form an equal arc fan-shaped annular structure, and the structure of the bearing baffle 321 is the equal arc fan-shaped annular structure with the folding plate 32, so that the bearing baffle 321 is more matched with the radian trend of the folding plate 32 when sliding and shrinking on the folding plate 32, and the bearing baffle 321 is more attractive and does not hinder the subsequent folding and storing operations of the folding plate 32.

The contact surfaces of the rotating plate 31 and the folding plate 32 which are rotated and folded are provided with magnetic members 313 which can be mutually attracted. The magnetic part 313 can improve the tightness of the fit between the folding plate 32 and the rotating plate 31 when the folding plate is rotated and folded to abut against the supporting plate, so that when the supporting plate 3 is in the storage state, the rotating plate 31 and the folding plate 32 cannot be accidentally separated in the sliding process, and the supporting plate 3 occupies a large space when being stored below the table board 1 in a sliding manner.

The rotating plate 31 and the folding plate 32 are respectively provided with a hook 39 for hanging the object placing bag on the side surface close to the table corner. The hook 39 is arranged, so that the gap between the support plate 3 and the table corner in the unfolded state can be fully utilized, two ends of the object placing bag are hung on the hook 39, the opening of the object placing bag is just exposed out of the gap between the support plate 3 and the table top in the unfolded state, and articles can be taken conveniently. The storage bag can be a garbage bag or a canvas bag and the like, and the storage function of the elbow supporting device can be further enhanced while the cleanness of the table top is kept.

Be provided with in the backup pad 3 and be used for holding the thing cavity 34 of putting of article, put on the side of thing cavity 34 open end setting keeping away from the table corner when backup pad 3 is in the expansion state, and put on the open end of thing cavity 34 and can dismantle the connection and be used for the sealed apron 35 of closed cavity. The side opening avoids the elbow supporting surface on one hand, which is convenient for the storage and taking of the articles in the storage cavity 34, and also avoids the rotating folding surfaces of the rotating plate 31 and the folding plate 32 on the other hand, so that the movement between the rotating plate 31 and the folding plate 32 is not interfered.

The upper end surface of the supporting plate 3 is made of transparent material. The transparent material is adopted, so that a user can see the articles stored in the storage cavity 34 clearly, and can find and take the articles conveniently and quickly.

The sealing cover plate 35 is hinged with one side of the opening end of the storage cavity 34, zipper teeth 36 capable of being mutually meshed are arranged on the edge of the sealing cover plate 35 and the edge of the opening of the storage cavity 34 in a surrounding mode, and a pull head 37 used for pulling the zipper teeth 36 is connected between the zipper teeth 36. The zipper teeth 36 and the pull head 37 can be used for realizing the sealing effect of the sealing cover plate 35 on the object cavity 34, meanwhile, the zipper teeth 36 and the pull head 37 are good in closeness, and can be opened and closed only by being pulled by external force of a user, so that the possibility that the sealing cover plate 35 is opened accidentally due to touch or pressing is reduced, and the safety of placing objects in the object cavity 34 is improved. In addition, two sliders 37 may be provided, so that the sliders 37 can be locked, and the safety of placing the articles in the storage cavity 34 is further increased.

The two sides of the sealing cover 35 corresponding to the side hinged to the opening of the storage cavity 34 are connected with side canvas 38, and the side canvas 38 can be stored in the storage cavity when the zipper teeth 36 are pulled by the pull head 37. The arrangement of the side canvas 38 can trap the articles in the accommodating cavity from two sides when the sealing cover plate 35 is opened, so that the risk that the articles in the accommodating cavity drop carelessly when the sealing cover plate 35 is opened quickly is avoided; on the other hand, the arrangement of the side canvas 38 enables the entrance of the article stored in the accommodating cavity to be changed from the transverse direction to the longitudinal direction, so that the sight and operation of a user are changed from the side direction to the lower side when the user stores the article, and the convenience of the operation of storing the article by the user is improved.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides an elbow strutting arrangement sets up on table (1), characterized by: including connecting slide bar (2) in table (1) bottom and connecting backup pad (3) that supply the elbow to support on slide bar (2), backup pad (3) become fan-shaped loop configuration setting, the one end and the backup pad (3) of slide bar (2) rotate to be connected, backup pad (3) can become to expand the setting around the table angle around slide bar (2) rotation in-process, the other end and the table (1) of slide bar (2) slide and are connected, backup pad (3) rotate with slide bar (2) one end of being connected and be provided with the turn to limit structure that is used for restricting backup pad (3) rotation direction, the other end of backup pad (3) slides and is connected with can provide the bearing baffle (321) that support with the desktop butt and for backup pad (3) when backup pad (3) rotate to keep flat with table (1), turn to limit structure can rotate to keep flat with the desktop at backup pad (3) and provide the support to backup pad (3), turn to and restrict structure including setting up be used for driving backup pad (3) pivoted pivot (311) and set up and be used for supplying pivot (311) to rotate hole (21) of connecting on slide bar (2), pivot (311) epirelief is equipped with arch (312) that are used for restricting backup pad (3) and turn to, the bottom of changeing hole (21) is connected with and is used for supplying protruding (312) pivoted movable cavity (23), be provided with on the lateral wall of changeing hole (21) and be used for supplying draw-in groove (22) of protruding (312) embedding, rotate to keep at ordinary times with the desktop in backup pad (3), thereby draw-in groove (22) can rotate restriction backup pad (3) through restriction arch (312) and rotate, butt elastic component (24) between pivot (311) bottom and movable cavity (23) bottom.

2. An elbow support device as claimed in claim 1, wherein: the utility model discloses a table, including table (1), slide rail (11), slide rail (2) are provided with the limit that is used for holding slide bar (2) bottom, slide rail (11) extend the setting along the width direction of table (1), be provided with on slide bar (2) and prevent slide bar (2) from droing from slide rail (11) and take off the piece.

3. An elbow support device as claimed in claim 1, wherein: be provided with turning block (4) on backup pad (3), turning block (4) become the setting of strip structure, the one end and pivot (311) fixed connection of turning block (4), the other end and backup pad (3) fixed connection, the distance size of pivot (311) to desktop and the distance size looks adaptation of pivot (311) to backup pad (3) up end, turning block (4) can drive backup pad (3) along with the rotation of pivot (311) and rotate to keeping level with the desktop.

4. An elbow support device as claimed in claim 1, wherein: the supporting plate (3) comprises at least two plates, one of the plates is a rotating plate (31) rotatably connected with the sliding rod (2), the other plate is a folding plate (32) connected with a bearing baffle (321) in a sliding manner, a rotating connecting structure is arranged between the rotating plate (31) and the folding plate (32), the rotating connecting structure can drive the folding plate (32) to rotate and fix the folding plate (32) when the folding plate (32) rotates to be leveled with the rotating plate (31), the rotating connecting structure comprises hinges (33) arranged on the rotating plate (31) and the folding plate (32), the rotating plate (31) and the folding plate (32) can rotate along the hinges (33), the rotating connecting structure further comprises locking pieces (322) arranged on the folding plate (32) and used for connecting the rotating plate (31) and locking holes (314) arranged on the rotating plate (31) and used for the locking pieces (322) to pass through, the locking piece (322) comprises a tapered end (3221) and a connecting rod (3222) axially connected with the tapered end (3221), the outer diameter of the connecting rod (3222) is smaller than that of the locking head (3221), the side wall of the locking hole (314) is connected with a sliding baffle (315) in a sliding manner, the sliding baffle is used for limiting the locking head (3221) to fall off the locking hole (314), the tapered end (3221) is provided with a chamfer surface towards the direction of the sliding baffle (315), the sliding baffle (315) is correspondingly provided with a chamfer surface towards the direction of the tapered end (3221), one end of the sliding baffle (315) is connected with a pull rod (316) used for pulling the sliding baffle (315) to be far away from the lock hole (314), the pull rod (316) is sleeved with a spring (317), the spring (317) can push the sliding baffle (315) to be close to the lock hole (314) through the reset elasticity of the spring, an outlet for one end of the pull rod (316) to protrude is formed in the rotating plate (31).

5. An elbow support device as claimed in claim 4, wherein: the rotating plate (31) and the folding plate (32) are provided with magnetic parts (313) which can be mutually attracted on the contact surfaces of the rotating plate and the folding plate.

6. An elbow support device as claimed in claim 4, wherein: the rotating plate (31) and the folding plate (32) are respectively provided with a hook (39) used for hanging the object placing bag on the side surface close to the table corner.

7. An elbow support device as claimed in claim 1, wherein: the novel desk is characterized in that an object placing cavity (34) used for containing objects is arranged in the supporting plate (3), an opening of the object placing cavity (34) is formed in the side face, away from the desk corner, of the supporting plate (3), and a sealing cover plate (35) used for sealing the object placing cavity (34) is detachably connected to the opening of the object placing cavity (34).

8. An elbow support device as claimed in claim 6, wherein: the upper end face of the supporting plate (3) is made of transparent materials.

9. An elbow support device as claimed in claim 7, wherein: the sealed cover plate (35) is hinged with one side of the opening end of the storage cavity (34), zipper teeth (36) which can be meshed with each other are arranged on the edge of the sealed cover plate (35) and the edge of the opening of the storage cavity (34) in a surrounding mode, and a pull head (37) used for pulling the zipper teeth (36) together is connected between the zipper teeth (36).

10. An elbow support device as claimed in claim 8, wherein: the two sides of the sealing cover plate (35) corresponding to one side with the opening hinged to the article placing cavity (34) are connected with side canvas (38), and the side canvas (38) can be stored into the article placing cavity (34) when the zipper teeth (36) are pulled by the pull head (37).

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