CN216627865U - Box library - Google Patents

Abstract

The utility model provides a box type library, which comprises a box body, wherein an opening is formed in the front side wall of the box body, an upper convex plate extending forwards is arranged at the upper end of the front side of the box body, a lower convex plate extending forwards is arranged at the lower end of the front side of the box body, a top plate and the upper convex plate of the box body are integrated and are in the same plane, and a bottom plate and the lower convex plate of the box body are integrated and are in the same plane; door plates are symmetrically hinged to the left side and the right side of the opening between the upper convex plate and the lower convex plate; the novel ultraviolet sterilization lamp box is characterized in that bookshelves are fixedly arranged at the positions, close to the left side wall and the right side wall, of the box body, squares for placing books are arranged in each bookshelf, a desk assembly is arranged at the middle of a bottom plate of the box body, a sterilization lamp is arranged in the desk assembly, and a transmission assembly for connecting a door plate and the desk assembly is arranged in the bottom plate of the box body.

Description

Box library

Technical Field

The utility model relates to the technical field of libraries, in particular to a box type library.

Background

At present, a plurality of units, towns and communities have numerous personnel, people can enrich the amateur life and knowledge promotion of people when reading books, a movable box-type library is placed by utilizing the community space, the reader can conveniently go to the long-distance traffic problem of the library greatly, and meanwhile, the traditional library is built by considering the factors of land occupation, building cost, unit burden weight and the like. The existing movable library is subject to different crowds in villages and towns, unspecified communities, books in the library and desktops, so that the desktops and the bookshelves need to be sterilized in time, and the traditional sterilization method is to use an ultraviolet sterilization lamp. Because the library is open to the outside in the daytime, the sterilization is usually arranged when the library is closed, the ultraviolet germicidal lamp is turned on or off by an operator at present, and the ultraviolet germicidal lamp is often forgotten to be turned off when the library is turned on or is forgotten to be turned on when the library is turned off; because the light of the ultraviolet germicidal lamp is harmful to human bodies and is easy to cause pathological changes of the human bodies after being contacted for a long time, the ultraviolet germicidal lamp is very inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a box type library which is simple in structure and can realize automatic control of an ultraviolet germicidal lamp.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a box type library comprises a box body, wherein an opening is formed in the front side wall of the box body, an upper convex plate extending forwards is arranged at the upper end of the front side of the box body, a lower convex plate extending forwards is arranged at the lower end of the front side of the box body, a top plate and the upper convex plate of the box body are integrated and are in the same plane, and a bottom plate and the lower convex plate of the box body are integrated and are in the same plane; door plates are symmetrically hinged to the left side and the right side of the opening between the upper convex plate and the lower convex plate; the novel desk is characterized in that bookshelves are fixedly arranged at positions close to the left side wall and the right side wall in the box body, squares for placing books are arranged in each bookshelf, a desk assembly is arranged at the middle of a bottom plate in the box body, a sterilizing lamp is arranged in the desk assembly, a transmission assembly for connecting the door plates and the desk assembly is arranged in the bottom plate of the box body, the sterilizing lamp is closed by the desk assembly when the openings of the two door plates are completely opened, and the sterilizing lamp is opened by the desk assembly when the openings of the two door plates are completely closed.

By the technical scheme, when the library is closed, the two door plates are rotated to close the opening, and when the door plates rotate, the desk assembly is controlled by the transmission assembly to turn on the germicidal lamp, so that the contact between a human body and ultraviolet rays can be avoided, and the situation that the ultraviolet germicidal lamp is forgotten to be turned on when the library is closed can be prevented; in addition, when the library is opened, the opening is opened by rotating the two door plates by 180 degrees, and when the door plates rotate, the desk assembly is controlled by the transmission assembly to turn off the germicidal lamp, so that the contact between a human body and ultraviolet rays can be avoided, and the situation that the ultraviolet germicidal lamp is forgotten to be turned off when the library is opened can be prevented.

Furthermore, all be equipped with the bedplate on the bottom plate of box between desk subassembly and bookshelf, the bedplate all sets up along the fore-and-aft direction.

Further, the transmission assembly comprises a transmission toothed plate, first sliding grooves are formed in the lower convex plate and the bottom plate of the box body along the front-back direction, the first sliding grooves are located in the middle positions of the lower convex plate and the bottom plate of the box body, the transmission toothed plate is connected in the first sliding grooves in a sliding mode, first mounting grooves communicated with the first sliding grooves are symmetrically formed in the left side and the right side of the first sliding grooves in the lower convex plate, a first rotating shaft is connected in the first mounting grooves in a rotating mode, a first gear meshed with the side face of the transmission toothed plate is fixedly arranged on the first rotating shaft, second mounting grooves communicated with the first mounting grooves are formed in the left side and the right side of the first sliding grooves in the lower convex plate, and each second mounting groove is arranged along the left-right direction; the upper end of each door plate is provided with an upper convex shaft which is rotatably connected in the upper convex plate, the lower end of each door plate is provided with a lower convex shaft which is rotatably connected in the lower convex plate and extends into the second mounting groove, each lower convex shaft is fixedly provided with a first belt wheel positioned in the second mounting groove, the first rotating shaft in the second mounting groove is fixedly provided with a second belt wheel, and the second belt wheel and the first gear are in coaxial positions; a first transmission belt is arranged between the first belt wheel and the second belt wheel; when the door plate is opened, the transmission toothed plate extends forwards out of the first sliding groove, and when the door plate is closed, the transmission toothed plate retracts backwards into the first sliding groove;

the left and right sides of the inherent first spout of bottom plate of box all is equipped with the third mounting groove with first spout intercommunication, the third mounting groove internal rotation is connected with the second pivot and is connected with the desk subassembly, fixed being equipped with in the second pivot with the meshing of driving toothed plate second gear.

Through the technical scheme, when the door panel is opened, the door panel drives the lower convex shaft to rotate, the lower convex shaft drives the first belt pulley to rotate, the first belt pulley drives the second belt pulley to rotate through the first transmission belt, the second belt pulley drives the first gear to rotate through the first rotating shaft, the first gear drives the transmission toothed plate meshed with the first gear to move forwards when rotating, the second gear is driven to rotate when the transmission toothed plate moves forwards, and the second gear drives the desk control component to turn off the germicidal lamp through the second rotating shaft; when the door panel is closed, the door panel drives the lower cam shaft to rotate reversely, the lower cam shaft drives the first belt wheel to rotate reversely, the first belt wheel drives the second belt wheel to rotate reversely through the first transmission belt, the second belt wheel drives the first gear to rotate reversely through the first rotating shaft, the first gear drives the transmission toothed plate meshed with the first gear to move backwards during rotation of the first gear, the second gear is driven to rotate reversely when the transmission toothed plate moves backwards, and the sterilizing lamp is closed by the second gear control desktop assembly.

Further, the desk assembly comprises a desk plate, a vertical plate is arranged in the middle of a bottom plate of the box body and arranged along the front-back direction, strip-shaped germicidal lamps are embedded in two acting sides of the vertical plate close to the upper end, and a notch for the vertical plate to extend into is formed in the desk plate; two reinforcing rib rods are fixedly arranged on the left side and the right side of the vertical plate between the top plate and the bottom plate of the box body, and the left side and the right side of the table plate are connected between the two reinforcing rib rods in a sliding manner; the lower end face of the table plate is provided with connecting plates extending downwards on the left side and the right side of the vertical plate, the upper end of the second rotating shaft extends out of the bottom plate of the box body and is provided with a lead screw in threaded connection with the connecting plates in an extending mode, and when the second rotating shaft drives the lead screw to rotate, the lead screw drives the table plate to move in the vertical direction through the connecting plates; when the door plate is opened, the screw rod drives the table plate to move upwards to the upper end position and block the germicidal lamp, and when the door plate is closed, the screw rod drives the table plate to move downwards to the lower end position and expose the germicidal lamp; when the germicidal lamp is exposed, the germicidal lamp is energized.

Through above-mentioned technical scheme, when the second gear wheel rotated, upwards or downstream through second pivot and lead screw control table, when the door plant was opened, the bactericidal lamp was closed by the table shutoff to prevent to cause the injury to the human body, when the door plant was closed, the table exposes the bactericidal lamp and opens, thereby can disinfect the disinfection to table and bookshelf, guaranteed the safe handling of table and bookshelf.

Furthermore, a second sliding groove with an opening at the front end is arranged in the lower convex plate and the bottom plate of the box body, the second sliding groove is arranged along the front-back direction and is communicated with the first sliding groove, a step plate is connected in the second sliding groove in a sliding manner along the front-back direction, and a convex block connected with the step plate is arranged on the lower end face of the transmission toothed plate; when the door panel is opened, the transmission toothed plate drives the step plate to extend out of the second sliding groove forwards through the convex block, and when the door panel is closed, the transmission toothed plate drives the step plate to retract into the second sliding groove backwards through the convex block.

Through above-mentioned technical scheme, when the transmission pinion rack stretches out first spout forward, the transmission pinion rack drives the step board and stretches out the second spout and use as the step, and when the transmission pinion rack retraces first spout backward, the transmission pinion rack drives in the step board retraces the second spout backward, and when the step board sent into the second spout, earth or dust on the step board were pushed away the step board by lower flange to the cleanness of step board has been guaranteed.

Further, a first plug plate is fixedly arranged at the rear end of the first sliding groove, and a first spring for forcing the transmission toothed plate to move forwards is arranged between the first plug plate and the rear end of the transmission toothed plate in the first sliding groove; the first spring is arranged to ensure that the transmission toothed plate can move more stably.

Compared with the prior art, the utility model has the advantages and positive effects that,

when the library is closed, the two door plates are rotated to close the opening, and when the door plates are rotated, the desk assembly is controlled by the transmission assembly to turn on the germicidal lamp, so that the contact of a human body and ultraviolet rays can be avoided, and the situation that the ultraviolet germicidal lamp is forgotten to be turned on when the library is closed can be prevented; in addition, when the library is opened, the opening is opened by rotating the two door plates by 180 degrees, and when the door plates rotate, the desk assembly is controlled by the transmission assembly to turn off the germicidal lamp, so that the contact between a human body and ultraviolet rays can be avoided, and the situation that the ultraviolet germicidal lamp is forgotten to be turned off when the library is opened can be prevented.

Drawings

FIG. 1 is a front view of a door panel of the present invention when open;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 2;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 2;

FIG. 5 is a cross-sectional view taken at D-D of FIG. 4;

FIG. 6 is a cross-sectional view taken at E-E of FIG. 3;

FIG. 7 is a cross-sectional view taken at F-F of FIG. 3;

FIG. 8 is a front view of the door panel of the present invention as closed;

FIG. 9 is a cross-sectional view taken at G-G of FIG. 8;

FIG. 10 is a sectional view taken at H-H in FIG. 9;

FIG. 11 is a cross-sectional view taken at I-I of FIG. 9;

FIG. 12 is a cross-sectional view taken at J-J of FIG. 10;

fig. 13 is a cross-sectional view taken at K-K in fig. 10.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

As shown in fig. 1 to 13, the present embodiment provides a box type library, which includes a box body 1, wherein a front side wall of the box body 1 is provided with an opening, an upper convex plate 101 extending forward is provided at an upper end of a front side of the box body 1, a lower convex plate 102 extending forward is provided at a lower end of the front side of the box body 1, a top plate of the box body 1 and the upper convex plate 101 are integrated and are in a same plane, and a bottom plate of the box body 1 and the lower convex plate 102 are integrated and are in a same plane; the door panels 2 are symmetrically hinged to the left side and the right side of the opening between the upper convex plate 101 and the lower convex plate 102; the bookshelf 3 is fixedly arranged in the box body 1 and close to the left side wall and the right side wall, and a square 301 for placing books is arranged in each bookshelf 3; a desk assembly is arranged in the middle of the bottom plate in the box body 1, a sterilizing lamp 27 is arranged in the desk assembly, seat plates 4 are arranged between the desk assembly and the bookshelf 3 on the bottom plate of the box body 1, and the seat plates 4 are arranged along the front-back direction; the bottom plate of the box body 1 is internally provided with a transmission component for connecting the door plates 2 and the desk component, when the openings of the two door plates 2 are completely opened, the desk component closes the germicidal lamp 27, and when the openings of the two door plates 2 are completely closed, the desk component closes the germicidal lamp 27.

The transmission assembly comprises a transmission toothed plate 5, a first sliding groove 1a is formed in the bottom plates of the lower convex plate 102 and the box body 1 along the front-back direction, the first sliding groove 1a is located in the middle positions of the bottom plates of the lower convex plate 102 and the box body 1, the transmission toothed plate 5 is connected in the first sliding groove 1a in a sliding mode, a first plug plate 6 is fixedly arranged at the rear end of the first sliding groove 1a, and a first spring 7 used for forcing the transmission toothed plate 5 to move forwards is arranged between the first plug plate 6 and the rear end of the transmission toothed plate 5 in the first sliding groove 1 a; first mounting grooves 1b communicated with the first sliding groove 1a are symmetrically formed in the left side and the right side of the first sliding groove 1a in the lower convex plate 102, a first rotating shaft 8 is connected in the first mounting groove 1b in a rotating mode, a first gear 9 meshed with the side face of the transmission toothed plate 5 is fixedly arranged on the first rotating shaft 8, second mounting grooves 1c communicated with the first mounting grooves 1b are formed in the left side and the right side of the first sliding groove 1a in the lower convex plate 102, and each second mounting groove 1c is arranged along the left-right direction; the upper end of each door panel 2 is provided with an upper convex shaft 2a which is rotatably connected in the upper convex plate 101, the lower end of each door panel is provided with a lower convex shaft 2b which is rotatably connected in the lower convex plate 102 and extends into the second mounting groove 1c, each lower convex shaft 2b is fixedly provided with a first belt wheel 10 positioned in the second mounting groove 1c, the first rotating shaft 8 in the second mounting groove 1c is fixedly provided with a second belt wheel 11, and the second belt wheel 11 and the first gear 9 are in a coaxial position; a first transmission belt 12 is arranged between the first belt wheel 10 and the second belt wheel 11; when the door panel 2 is opened, the transmission toothed plate 5 extends forwards out of the first sliding groove 1a, and when the door panel 2 is closed, the transmission toothed plate 5 retracts backwards into the first sliding groove 1 a.

The left and right sides of the inherent first spout 1a of bottom plate of box 1 all is equipped with the third mounting groove 1d with first spout 1a intercommunication, third mounting groove 1d internal rotation is connected with second pivot 13, the fixed second gear 14 that meshes with driving toothed plate 5 that is equipped with in the second pivot 13.

The desk assembly comprises a desk plate 25, a vertical plate 26 is arranged in the middle of the bottom plate of the box body 1, the vertical plate 26 is arranged along the front-back direction, strip-shaped germicidal lamps 27 are embedded and arranged on two acting sides of the vertical plate 26 close to the upper end, and a notch for the vertical plate 26 to extend into is formed in the desk plate 25; two reinforcing rib rods 28 are fixedly arranged on the left side and the right side of the vertical plate 26 between the top plate and the bottom plate of the box body 1, and the left side and the right side of the table plate 25 are connected between the two reinforcing rib rods 28 in a sliding manner; the lower end surface of the table 25 is provided with connecting plates 25a extending downwards on the left side and the right side of the vertical plate 26, the upper end of the second rotating shaft 13 extends out of the bottom plate of the box body 1 and is provided with a screw rod 13a in threaded connection with the connecting plates 25a in an upward extending mode, and when the second rotating shaft 13 drives the screw rod 13a to rotate, the screw rod 13a drives the table 25 to move along the vertical direction through the connecting plates 25 a; when the door panel 2 is opened, the screw rod 13a drives the table plate 25 to move upwards to the upper end position and block the germicidal lamp 27, and when the door panel 2 is closed, the screw rod 13a drives the table plate 25 to move downwards to the lower end position and expose the germicidal lamp 27; when the germicidal lamp 27 is exposed, the germicidal lamp 27 is energized; in this embodiment, the germicidal lamp 27 switch is controlled to be on when the table 25 moves downward and the germicidal lamp 27 switch is controlled to be off when the table 25 moves upward.

A second sliding chute 1f with an opening at the front end is arranged in the bottom plate of the lower convex plate 102 and the box body 1, the second sliding chute 1f is arranged along the front-back direction and is communicated with the first sliding chute 1a, a step plate 29 is connected in the second sliding chute 1f along the front-back direction in a sliding manner, and a convex block 51 connected with the step plate 29 is arranged on the lower end surface of the transmission toothed plate 5; when the door panel 2 is opened, the transmission toothed plate 5 drives the step plate 29 to extend out of the second sliding groove 1f through the convex block 51, and when the door panel 2 is closed, the transmission toothed plate 5 drives the step plate 29 to retract into the second sliding groove 1f through the convex block 51.

When a library is opened, the two door panels 2 are rotated to the left side and the right side to open the opening, when the door panels 2 are opened, the door panels 2 drive the lower convex shaft 2b to rotate, the lower convex shaft 2b drives the first belt pulley 10 to rotate, the first belt pulley 10 drives the second belt pulley 11 to rotate through the first transmission belt 12, the second belt pulley 11 drives the first gear 9 to rotate through the first rotating shaft 8, and the first gear 9 drives the transmission toothed plate 5 meshed with the first gear 9 to move forwards when rotating; when the transmission pinion rack 5 moves forward, on the one hand, the transmission pinion rack 5 drives the step plate 29 to stretch out the second chute 1f and use as the step, on the other hand, the transmission pinion rack 5 drives the second gear 14 to rotate, the second gear 14 drives the second rotating shaft 13 to rotate, when the second rotating shaft 13 rotates, the second rotating shaft 13 drives the lead screw 13a to rotate, the lead screw 13a drives the table 25 to move upwards through the connecting plate 25a to seal and power off the germicidal lamp 27, and meanwhile, the surface of the germicidal lamp 27 is cleaned. Therefore, the whole process of opening the door panel 2 can avoid the contact of the human body with the ultraviolet rays, and can also prevent forgetting to turn off the ultraviolet germicidal lamp when opening the library.

When the library is closed, the two door panels are rotated in opposite directions for 180 degrees to close the opening, when the door panels 2 are closed, the door panels 2 drive the lower convex shafts 2b to rotate in opposite directions, the lower convex shafts 2b drive the first belt wheels 10 to rotate in opposite directions, the first belt wheels 10 drive the second belt wheels 11 to rotate in opposite directions through the first transmission belts 12, the second belt wheels 11 drive the first gears 9 to rotate in opposite directions through the first rotating shafts 8, and the first gears 9 drive the transmission toothed plates 5 meshed with the first gears 9 to move backwards when rotating; when the transmission toothed plate 5 moves backwards, on one hand, the transmission toothed plate 5 drives the step plate 29 to retract into the second sliding chute 1f, and soil or dust on the step plate 29 is pushed away from the step plate 29 by the lower convex plate 102, so that the step plate 29 is clean; on the other hand, the transmission toothed plate 5 drives the second gear 14 to rotate reversely, the second gear 14 drives the second rotating shaft 13 to rotate reversely, when the second rotating shaft 13 rotates reversely, the second rotating shaft 13 also drives the screw rod 13a to rotate reversely, and the screw rod 13a drives the table 25 to move downwards through the connecting plate 25a to expose the germicidal lamp 27 and switch on the germicidal lamp by electrifying. Therefore, the entire process of closing the door panel 2 can prevent the human body from coming into contact with the ultraviolet rays, and can also prevent forgetting to turn on the ultraviolet germicidal lamp when closing the library.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims (6)

1. A box type library is characterized by comprising a box body, wherein an opening is formed in the front side wall of the box body, an upper convex plate extending forwards is arranged at the upper end of the front side of the box body, a lower convex plate extending forwards is arranged at the lower end of the front side of the box body, a top plate and the upper convex plate of the box body are integrated and are in the same plane, and a bottom plate and the lower convex plate of the box body are integrated and are in the same plane; door plates are symmetrically hinged to the left side and the right side of the opening between the upper convex plate and the lower convex plate; the novel desk is characterized in that bookshelves are fixedly arranged at positions close to the left side wall and the right side wall in the box body, squares for placing books are arranged in each bookshelf, a desk assembly is arranged at the middle of a bottom plate in the box body, a sterilizing lamp is arranged in the desk assembly, a transmission assembly for connecting the door plates and the desk assembly is arranged in the bottom plate of the box body, the sterilizing lamp is closed by the desk assembly when the openings of the two door plates are completely opened, and the sterilizing lamp is opened by the desk assembly when the openings of the two door plates are completely closed.

2. A library box as claimed in claim 1, wherein: the bookshelf is characterized in that base plates are arranged on the bottom plate of the box body between the desk assembly and the bookshelf and are arranged along the front-back direction.

3. A library box as claimed in claim 1, wherein: the transmission assembly comprises a transmission toothed plate, first sliding grooves are formed in the lower convex plate and the bottom plate of the box body along the front-back direction, the first sliding grooves are located in the middle positions of the lower convex plate and the bottom plate of the box body, the transmission toothed plate is connected in the first sliding grooves in a sliding mode, first mounting grooves communicated with the first sliding grooves are symmetrically formed in the left side and the right side of the first sliding grooves in the lower convex plate, a first rotating shaft is connected in the first mounting grooves in a rotating mode, a first gear meshed with the side face of the transmission toothed plate is fixedly arranged on the first rotating shaft, second mounting grooves communicated with the first mounting grooves are formed in the left side and the right side of the first sliding grooves in the lower convex plate, and each second mounting groove is formed in the left-right direction; the upper end of each door plate is provided with an upper convex shaft which is rotatably connected in the upper convex plate, the lower end of each door plate is provided with a lower convex shaft which is rotatably connected in the lower convex plate and extends into the second mounting groove, each lower convex shaft is fixedly provided with a first belt wheel positioned in the second mounting groove, the first rotating shaft in the second mounting groove is fixedly provided with a second belt wheel, and the second belt wheel and the first gear are in coaxial positions; a first transmission belt is arranged between the first belt wheel and the second belt wheel; when the door plate is opened, the transmission toothed plate extends forwards out of the first sliding groove, and when the door plate is closed, the transmission toothed plate retracts backwards into the first sliding groove;

the left and right sides of the inherent first spout of bottom plate of box all is equipped with the third mounting groove with first spout intercommunication, the third mounting groove internal rotation is connected with the second pivot and is connected with the desk subassembly, fixed being equipped with in the second pivot with the meshing of driving toothed plate second gear.

4. A library box as claimed in claim 3, wherein: the desk assembly comprises a desk plate, a vertical plate is arranged in the middle of a bottom plate of the box body and arranged along the front-back direction, strip-shaped germicidal lamps are embedded and arranged on two acting sides of the vertical plate close to the upper end, and a notch for the vertical plate to extend into is formed in the desk plate; two reinforcing rib rods are fixedly arranged on the left side and the right side of the vertical plate between the top plate and the bottom plate of the box body, and the left side and the right side of the table plate are connected between the two reinforcing rib rods in a sliding manner; the lower end face of the table plate is provided with connecting plates extending downwards on the left side and the right side of the vertical plate, the upper end of the second rotating shaft extends out of the bottom plate of the box body and is provided with a screw rod in threaded connection with the connecting plates in an extending mode, and when the second rotating shaft drives the screw rod to rotate, the screw rod drives the table plate to move in the vertical direction through the connecting plates; when the door plate is opened, the screw rod drives the table plate to move upwards to the upper end position and block the germicidal lamp, and when the door plate is closed, the screw rod drives the table plate to move downwards to the lower end position and expose the germicidal lamp; when the germicidal lamp is exposed, the germicidal lamp is energized.

5. A library box as claimed in claim 3, wherein: a second sliding groove with an opening at the front end is formed in the lower convex plate and the bottom plate of the box body, the second sliding groove is arranged along the front-back direction and is communicated with the first sliding groove, a step plate is connected in the second sliding groove in a sliding manner along the front-back direction, and a convex block connected with the step plate is arranged on the lower end face of the transmission toothed plate; when the door panel is opened, the transmission toothed plate drives the step plate to extend out of the second sliding groove forwards through the convex block, and when the door panel is closed, the transmission toothed plate drives the step plate to retract into the second sliding groove backwards through the convex block.

6. A library box as claimed in claim 3, wherein: the rear end of first spout is fixed and is equipped with first cock board, be equipped with the first spring that is used for forcing the driving toothed plate forward motion between the rear end of first cock board and driving toothed plate in the first spout.

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