A combined office bookcase with a locking and protective structure

Abstract

The present invention provides a combined office bookcase with a locking and protective structure, which includes a main book rack. A door panel assembly, a fixing plate and a connecting plate are respectively connected to the front side and the interior of the main book rack. A front support seat and a rear support seat are respectively arranged on the connecting plate. The front support seat is rotationally connected to the connecting plate through a connecting shaft. A limiting block is fixedly connected to the bottom surface of the front support seat, and a magnetic ring is arranged below the limiting block. The magnetic ring is sleeved on a hydraulic rod of an electric cylinder. The electric cylinder is embedded and fixed on a sliding block. The sliding block is arranged in a sliding groove. The sliding groove is opened on the fixing plate. A plurality of membrane button switches for controlling the operation of the electric cylinder are fixedly connected to the front side surface of the fixing plate. Through the pressing of the membrane button switch and the operation of the driving motor and the electric cylinder in the present invention, it is convenient to rotate the front support seat, and then send the books out of the main book rack, achieving the purpose of quickly finding and taking out the books.

Description

Technical Field

[0001] The present invention relates to the technical field of bookcases, and in particular to a modular office bookcase with a locking protection structure. Background Art

[0002] Bookcase is one of the main furniture in the study, that is, a cabinet specially used to store books, newspapers, magazines and other materials.

[0003] In the prior art, people often put the books they have read and bought on bookcases to organize the excessive number of books. However, the bookcases currently used are mostly of an integrated structure and can only place books. In a cold and humid environment, it is not convenient to ventilate and dry the placed books, which easily causes the books to be damp and moth-eaten, thus reducing the service life of the books. Moreover, when placing the books, multiple books are usually placed diagonally against each other and squeezed and limited by the weight of the books themselves. When a person pulls out one of the books, the adjacent books are likely to fall over due to the gaps, which reduces the effect of organizing the books. At the same time, when putting the books back, the books cannot be put back to their original positions due to the falling and looseness of the books, thereby reducing the complexity and difficulty of organizing the books.

[0004] Therefore, a modular office bookcase with a locking protection structure is needed to solve the above problems. Utility Model Content

[0005] The present invention aims to provide a modular office bookcase with a locking protection structure to overcome the above problems or at least partially solve the above problems.

[0006] To achieve the above object, the technical solution of the present invention is specifically implemented as follows:

[0007] The present invention provides a combined office bookcase with a locking protection structure, including a main book rack. A door panel assembly, a fixing plate, and a connecting plate are respectively connected to the front side and the interior of the main book rack, and the connecting plate is arranged on the fixing plate. A front support seat and a rear support seat are respectively arranged on the connecting plate. A connecting pipe is connected between the front support seat and the rear support seat, and the connecting pipe moves back and forth along the front support seat. The front support seat is rotatably connected to the connecting plate through a connecting shaft. Air holes for discharging hot air are respectively arranged on the front support seat, the connecting pipe, and the rear support seat. The rear support seat is connected to a connecting shell through an air supply pipe. An electric heating rod and a suction fan are respectively arranged inside the connecting shell. A limiting block is fixedly connected to the bottom surface of the front support seat, and a magnetic ring is arranged below the limiting block. The magnetic ring is sleeved on a hydraulic rod of an electric cylinder. The electric cylinder is fixedly embedded in a sliding block. The sliding block is arranged in a sliding groove and moves along the sliding groove. The sliding groove is opened on the fixing plate. A plurality of membrane button switches for controlling the operation of the electric cylinder are fixedly connected to the front side surface of the fixing plate, and the plurality of membrane button switches correspond to the plurality of front support seats one by one.

[0008] As a further solution of the present invention, the door panel assembly includes a positioning seat, a movable rod, and a transparent baffle. The movable rod is rotatably connected to the positioning seat through a rotating shaft, and the positioning seat is fixed on the front side surface of the main book rack. A plurality of transparent baffles are arranged between the movable rods, and the upper and lower sides of the plurality of transparent baffles are respectively rotatably connected to the movable rods through convex rods. A disc spring is sleeved on the lower convex rod, and the disc spring is arranged inside the movable rod. The convex rod is rotatably connected to the movable rod through the disc spring. Through the design of the door panel assembly, a closed space is formed for the main book rack, preventing the entry of dust and moisture and improving the safety of book placement.

[0009] As a further solution of the present invention, a stop block is arranged on the back surface of the transparent baffle, and the stop block is fixed on the movable rod and corresponds to the transparent baffle one by one. The design of the stop block facilitates the limiting of the rotation of the transparent baffle.

[0010] As a further solution of the present invention, an infrared receiving end is arranged on the front support seat, and an infrared transmitting end is arranged on the rear support seat, and the infrared transmitting end corresponds to the infrared receiving end. The infrared receiving end receives the signal emitted by the infrared transmitting end, and through a microprocessor controller for processing and controlling the operation of the pushing cylinder, thereby stably clamping the books and improving the stability of book placement.

[0011] As a further aspect of the present invention, an air storage cavity is provided inside the front support base, and a pushing cylinder is fixedly connected inside the air storage cavity. The hydraulic rod on the pushing cylinder is connected to the connecting pipe. The pushing cylinder is controlled by a microprocessor controller to expand and contract, facilitating driving the connecting pipe and the rear support base to move back and forth. The air storage cavity not only facilitates the built-in setting of the pushing cylinder but also facilitates the storage of hot air.

[0012] As a further aspect of the present invention, the air holes are in the shape of being larger at the top and smaller at the bottom, facilitating the control of the air pressure inside the air storage cavity, thereby facilitating the uniform discharge of hot air from multiple air holes.

[0013] As a further aspect of the present invention, the limiting block is made of stainless steel, and the limiting block is magnetically connected to the magnet ring. The surface of the limiting block in contact with the magnet ring is an inclined surface, which facilitates the stable connection of the magnet ring and the limiting block, and also facilitates the movement of the magnet ring along the limiting block, thereby pushing the front support plate.

[0014] As a further aspect of the present invention, a ball screw and a sliding block are arranged inside the sliding groove, and the sliding block is sleeved on the ball screw. Both ends of the ball screw are rotatably connected to the main book frame through bearings. A driving motor is fixedly connected to the side wall of the main book frame, and the output shaft on the driving motor is connected to one end of the ball screw. By pressing the membrane button switch and transmitting the pressing signal to the central controller, the driving motor and the electric cylinder are controlled by the central controller. The driving motor controls the rotation of the ball screw and drives the electric cylinder to a specified position, and then the electric cylinder extends to jack up the limiting block and the front support base, achieving the purpose of facilitating book retrieval.

[0015] As a further aspect of the present invention, a connecting shell is fixedly connected to the back of the main book frame. A dust filter net is fixedly connected to the back of the connecting shell, and a sealing cover is snap-fitted and fixed to the front side of the connecting shell. One end of the air supply pipe is connected to the sealing cover. The other end of the air supply pipe passes through the opening groove on the fixing plate and the rear support base and is communicated with the connecting pipe. An opening is provided inside the connecting shell, and a suction fan and an electric heating rod are respectively arranged on the opening. The electric heating rod is located behind the suction fan. The dust filter net facilitates the filtration of external air, and at the same time, the suction fan and the electric heating rod realize the heating and sterilization of the air, and then send the hot air into the main book frame to facilitate the drying of books.

[0016] As a further aspect of the present invention, a plurality of through grooves are provided on the connecting plate, and a front support base and a rear support base are arranged on each of the plurality of through grooves, facilitating the stable placement of the front support base and the rear support base.

[0017] The present invention provides a combined office bookcase with a locking and protective structure. The beneficial effects are as follows: By pressing the membrane button switch and through the operation of the driving motor and the electric cylinder, it is convenient to rotate the front support seat, and then send the books out of the main book rack, achieving the purpose of quickly finding and taking out the books. The operation is simple and the automation degree is high;

[0018] And through the infrared transmitter and the infrared receiver, it is convenient to stably clamp the books, and it is also convenient to clamp books of different specifications, improving the placement stability of the books;

[0019] And through the operation of the electric heating rod, the suction fan and the air supply pipe, it is realized to send hot air into the interior of the main book rack, facilitating the drying of the books and improving the maintenance effect of the books;

[0020] By combining and assembling the door panel assembly with the main book rack, it is realized to form a closed space for the main book rack, facilitating the stable placement of the books, avoiding the loss of books, and at the same time avoiding the entry of moisture and insects, improving the preservation effect of the books. Moreover, through the rotation of the transparent baffle, it is also convenient to take and place the books, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the main book rack of the present invention.

[0024] Figure 3 It is a schematic closed structure diagram of the front support seat and the rear support seat of the present invention.

[0025] Figure 4 It is a schematic unfolded structure diagram of the front support seat and the rear support seat of the present invention.

[0026] Figure 5 It is a schematic connection structure diagram of the front support seat and the rear support seat of the present invention.

[0027] Figure 6 It is a partial cross-sectional view of the front support seat of the present invention.

[0028] Figure 7 It is a schematic structural diagram of the front support seat after rotating 90°.

[0029] Figure 8 This is a schematic structural diagram of the door panel assembly in the present invention.

[0030] Figure 9 This is a schematic closing structure diagram of the transparent baffle and the movable rod in the present invention.

[0031] Figure 10 This is a schematic unfolding structure diagram of the transparent baffle and the movable rod in the present invention.

[0032] Figure 11 This is a cross-sectional view of the movable rod in the present invention.

[0033] Figure 12 This is a top view of the fixing plate in the present invention.

[0034] Figure 13 This is a partial cross-sectional view of the fixing plate in the present invention.

[0035] Figure 14 This is a cross-sectional view of the connecting housing in the present invention.

[0036] Figure 15 This is a schematic structural diagram of the connecting plate in the present invention.

[0037] Figure 16 This is a working principle block diagram of the thin-film push-button switch in the present invention.

[0038] Figure 17 This is a working principle block diagram of the infrared transmitting end and the infrared receiving end in the present invention.

[0039] Figure 18 This is a working principle block diagram of the electric heating rod in the present invention.

[0040] In the figure: 1, main book rack; 2, door panel assembly; 3, fixing plate; 4, thin-film push-button switch; 5, connecting plate; 6, front support seat; 7, rear support seat; 8, connecting pipe; 9, extension strip; 10, air hole; 11, limiting block; 12, pushing cylinder; 13, electric cylinder; 14, magnet ring; 21, positioning seat; 22, movable rod; 23, transparent baffle; 24, magnetic block; 25, stop block; 26, convex rod; 27, disc spring; 28, sliding block; 29, driving motor; 30, ball screw; 31, opening groove; 32, sliding groove; 33, connecting housing; 34, air supply pipe; 35, electric heating rod; 36, suction fan; 37, central controller; 51, through groove; 61, connecting shaft; 62, infrared receiving end; 63, air storage cavity; 71, infrared transmitting end; 121, microprocessing controller; 331, dust filter net. Detailed implementation manners

[0041] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0042] See Figure 1-7 、 Figure 12 、 Figure 13 and Figure 16 , a combined office bookcase with a locking protection structure provided by an embodiment of the present invention includes a main book rack 1. A door panel assembly 2, a fixing plate 3, and a connecting plate 5 are respectively connected to the front side and the interior of the main book rack 1, and the connecting plate 5 is arranged on the fixing plate 3. A front support seat 6 and a rear support seat 7 are respectively arranged on the connecting plate 5. A connecting pipe 8 is connected between the front support seat 6 and the rear support seat 7, and the connecting pipe 8 moves back and forth along the front support seat 6. The front support seat 6 is rotatably connected to the connecting plate 5 through a connecting shaft 61. A limiting block 11 is fixedly connected to the bottom surface of the front support seat 6, and a magnet ring 14 is arranged below the limiting block 11. The magnet ring 14 is sleeved on a hydraulic rod of an electric cylinder 13. The electric cylinder 13 is fixedly embedded in a sliding block 28. The sliding block 28 is arranged in a sliding groove 32 and moves along the sliding groove 32. The sliding groove 32 is opened on the fixing plate 3. A plurality of membrane button switches 4 for controlling the operation of the electric cylinder 13 are fixedly connected to the front side surface of the fixing plate 3, and the plurality of membrane button switches 4 correspond to the plurality of front support seats 6 one by one.

[0043] The limiting block 11 is made of stainless steel material, and the limiting block 11 is magnetically connected to the magnet ring 14. The surface of the limiting block 11 in contact with the magnet ring 14 is an inclined surface.

[0044] A ball screw 30 and a sliding block 28 are arranged inside the sliding groove 32, and the sliding block 28 is sleeved on the ball screw 30. Both ends of the ball screw 30 are rotatably connected to the main book rack 1 through bearings, and a driving motor 29 is fixedly connected to the side wall of the main book rack 1. An output shaft on the driving motor 29 is connected to one end of the ball screw 30.

[0045] During the use of the present invention, the central controller 37 is electrically connected to a plurality of membrane button switches 4, drive motors 29, and electric cylinders 13 respectively, and the central controller 37 is connected to the microprocessing controller 121. When a person searches for and takes a book on the book main frame 1, the membrane button switch 4 under the corresponding book is pressed. Then, the central controller 37 responds and controls the drive motor 29 and the electric cylinder 13. Then, the drive motor 29 operates to drive the ball screw 30 to rotate. Then, under the action of the ball nut pair, the slider 28 and the electric cylinder 13 move to the lower side of the corresponding book. Subsequently, the electric cylinder 13 operates and extends, thereby driving the magnet ring 14 to move upward and magnetically connect with the limit block 11, and then jacking up the limit block 11 upward. Then, the front support seat 6 rotates upward around the central axis of the connecting shaft 61, and then synchronously drives the book and the rear support seat 7 to rotate, realizing the rotation of the book out of the book main frame 1. Then, the person can take the book. The operation is simple and the degree of automation is high. After the book is taken out, at this time, the infrared receiving end 62 receives the signal emitted by the infrared transmitting end 71. Then, the microprocessing controller 121 responds and transmits the signal to the central controller 37. Then, the central controller 37 controls the electric cylinder 13 to reset, thereby driving the magnet ring 14 to move downward, and then driving the limit block 11 and the front support seat 6 to reset under the action of the magnetic attraction force.

[0046] When the book needs to be put back, only need to press the membrane button switch 4 at the corresponding position again, then the front support seat 6 can be rotated to the vertical state. Then, put the book back between the front support seat 6 and the rear support seat 7, and then the front support seat 6 and the rear support seat 7 can be reset to put the book in. The operation is simple and the degree of automation is high.

[0047] As Figure 1 and Figure 8-11 As shown, the door panel assembly 2 includes a positioning seat 21, a movable rod 22, and a transparent baffle 23. The movable rod 22 is rotatably connected to the positioning seat 21 through a rotating shaft, and the positioning seat 21 is fixed on the front side of the book main frame 1. A plurality of transparent baffles 23 are arranged between the movable rods 22, and both the upper and lower sides of the plurality of transparent baffles 23 are rotatably connected to the movable rod 22 through a convex rod 26. A disc spring 27 is sleeved on the lower convex rod 26, and the disc spring 27 is arranged inside the movable rod 22. The convex rod 26 is rotatably connected to the movable rod 22 through the disc spring 27.

[0048] A stop block 25 is arranged on the back of the transparent baffle 23, and the stop block 25 is fixed on the movable rod 22, and the stop block 25 corresponds to the transparent baffle 23 one by one.

[0049] During the use of the present invention, by assembling the door panel assembly 2 and the main book rack 1 together, it is convenient to form a sealed space with the main book rack 1, avoiding the entry of moisture and insects, thus preventing books from getting damp and being damaged by insects, and improving the preservation effect of books.

[0050] When taking a book, the front support seat 6 rotates, and its end contacts the transparent baffle 23, driving the transparent baffle 23 to rotate around the central axis of the convex rod 26. At the same time, the stop block 25 limits the rotation angle of the transparent baffle 23. During the rotation of the front support seat 6, the book is also driven to rotate, so that the book passes through the door panel assembly 2, facilitating the person to take the book. Moreover, during the rotation of the transparent baffle 23, the convex rod 26 is also driven to rotate, compressing and deforming the disc spring 27 and generating a rebound force. Then, after the front support seat 6 resets, the disc spring 27 restores its deformation and drives the transparent baffle 23 to automatically reset, closing the hole that was just opened.

[0051] As Figure 3-5 and Figure 17 shown, an infrared receiving end 62 is provided on the front support seat 6, and an infrared transmitting end 71 is provided on the rear support seat 7, and the infrared transmitting end 71 corresponds to the infrared receiving end 62.

[0052] A gas storage cavity 63 is opened inside the front support seat 6, and a push cylinder 12 is fixedly connected inside the gas storage cavity 63, and the hydraulic rod on the push cylinder 12 is connected to the connecting pipe 8.

[0053] During the use of the present invention, the microprocessor controller 121 is respectively connected to the infrared receiving end 62 and the push cylinder 12. After the book is taken out from between the front support seat 6 and the rear support seat 7, at this time, the infrared receiving end 62 receives the infrared signal emitted by the infrared transmitting end and transmits the signal to the microprocessor controller 121. Then, the microprocessor controller 121 controls the push cylinder 12 to extend, thereby pushing the connecting pipe 8 and the rear support seat 7 outwards, realizing the separation of the rear support seat 7 from the front support seat 6.

[0054] After the book is placed between the front support seat 6 and the rear support seat 7, at this time, the infrared receiving end 62 cannot receive the infrared signal emitted by the infrared transmitting end. At this time, the microprocessor controller 121 controls the push cylinder 12 to contract, driving the connecting pipe 8 and the rear support seat 7 to move forward, and then stably clamping the book through the front support seat 6 and the rear support seat 7.

[0055] As Figure 1 、 Figure 2 、 Figure 14 、 Figure 15 and Figure 18As shown, air holes 10 for discharging hot air are provided on the front support base 6, the connecting pipe 8, and the rear support base 7. The rear support base 7 is connected to the connecting housing 33 through an air supply pipe 34. An electric heating rod 35 and a suction fan 36 are respectively arranged inside the connecting housing 33.

[0056] The air hole 10 is in a shape with a larger upper part and a smaller lower part.

[0057] The back of the main book frame 1 is fixedly connected to the connecting housing 33. A dust filter net 331 is fixedly connected to the back of the connecting housing 33. A sealing cover is snap-fitted and fixed to the front side of the connecting housing 33, and the sealing cover is connected to one end of the air supply pipe 34. The other end of the air supply pipe 34 passes through the opening groove 31 on the fixing plate 3 and the rear support base 7 and is communicated with the connecting pipe 8. An opening is provided inside the connecting housing 33, and the suction fan 36 and the electric heating rod 35 are respectively arranged on the opening. The electric heating rod 35 is located behind the suction fan 36.

[0058] A plurality of through grooves 51 are provided on the connecting plate 5, and the front support base 6 and the rear support base 7 are arranged on the plurality of through grooves 51.

[0059] During the use of the present invention, the electric heating rod 35 and the suction fan 36 are started. The suction fan 36 works to suck external air into the inside of the connecting housing 33. At the same time, the air passes through the dust filter net 331, realizing the filtration of the air through the dust filter net 331. Then the electric heating rod 35 works to heat the passing air, and also realizes the sterilization and disinfection of the air. Then the hot air is sent into the connecting pipe 8 through the air supply pipe 34. Then a part of the hot air inside the connecting pipe 8 is discharged through the air holes 10 on it, and the other part enters the air storage cavity 63 and is discharged through the air holes 10 on the front support base 6. Then the hot air enters the inside of the main book frame 1 and blows the books from bottom to top, realizing the drying of the books and also facilitating the dust removal of the books. The operation is simple, and the maintenance effect of the books is improved.

[0060] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A combined office bookcase with a locking protection structure, including a main book rack (1), characterized in that, On the front side and inside of the main book rack (1), a door panel assembly (2), a fixing plate (3), and a connecting plate (5) are respectively connected. The connecting plate (5) is arranged on the fixing plate (3). On the connecting plate (5), a front support seat (6) and a rear support seat (7) are respectively arranged. A connecting pipe (8) is connected between the front support seat (6) and the rear support seat (7), and the connecting pipe (8) moves back and forth along the front support seat (6). The front support seat (6) is rotatably connected to the connecting plate (5) through a connecting shaft (61). Air holes (10) for discharging hot air are opened on the front support seat (6), the connecting pipe (8), and the rear support seat (7). The rear support seat (7) is connected to a connecting housing (33) through an air supply pipe (34). An electric heating rod (35) and a suction fan (36) are respectively arranged inside the connecting housing (33). A limiting block (11) is fixedly connected to the bottom surface of the front support seat (6), and a magnet ring (14) is arranged below the limiting block (11). The magnet ring (14) is sleeved on the hydraulic rod of an electric cylinder (13). The electric cylinder (13) is embedded and fixed on a sliding block (28). The sliding block (28) is arranged in a sliding groove (32) and moves along the sliding groove (32). The sliding groove (32) is opened on the fixing plate (3). A plurality of membrane push-button switches (4) for controlling the operation of the electric cylinder (13) are fixedly connected to the front side surface of the fixing plate (3), and the plurality of membrane push-button switches (4) correspond to the plurality of front support seats (6) one by one.

2. The combined office bookcase with a locking and protective structure according to claim 1, wherein, The door panel assembly (2) includes a positioning seat (21), a movable rod (22), and a transparent baffle (23). The movable rod (22) is rotatably connected to the positioning seat (21) through a rotating shaft, and the positioning seat (21) is fixed on the front side surface of the main book rack (1). A plurality of transparent baffles (23) are arranged between the movable rods (22). The upper and lower sides of the plurality of transparent baffles (23) are respectively rotatably connected to the movable rod (22) through a convex rod (26). A disc spring (27) is sleeved on the lower convex rod (26), and the disc spring (27) is arranged inside the movable rod (22). The convex rod (26) is rotatably connected to the movable rod (22) through the disc spring (27).

3. The combined office bookcase with a locking and protecting structure according to claim 2, wherein, A stop block (25) is arranged on the back surface of the transparent baffle (23), and the stop block (25) is fixed on the movable rod (22), and the stop block (25) corresponds to the transparent baffle (23) one by one.

4. A combined office bookcase with a locking and protective structure according to claim 1, characterized in that, An infrared receiving end (62) is arranged on the front support seat (6), and an infrared transmitting end (71) is arranged on the rear support seat (7), and the infrared transmitting end (71) corresponds to the infrared receiving end (62).

5. The combined office bookcase with a locking and protecting structure according to claim 4, characterized in that, An air storage cavity (63) is opened inside the front support seat (6), and a pushing cylinder (12) is fixedly connected inside the air storage cavity (63). The hydraulic rod on the pushing cylinder (12) is connected to the connecting pipe (8).

6. The modular office bookcase with a locking protection structure according to claim 1, characterized in that, The air hole (10) is in the shape of being larger at the top and smaller at the bottom.

7. A combined office bookcase with a locking and protective structure according to claim 1, characterized in that, The limiting block (11) is made of stainless steel, and the limiting block (11) is magnetically connected to the magnet ring (14). The surface of the limiting block (11) in contact with the magnet ring (14) is an inclined surface.

8. A combined office bookcase with a locking protection structure according to claim 1, characterized in that, A ball screw (30) and a sliding block (28) are arranged inside the sliding groove (32), and the sliding block (28) is sleeved on the ball screw (30). Both ends of the ball screw (30) are rotatably connected to the main book frame (1) through bearings. A driving motor (29) is fixedly connected to the side wall of the main book frame (1), and the output shaft on the driving motor (29) is connected to one end of the ball screw (30).

9. The combined office bookcase with a locking and protection structure according to claim 1, characterized in that, A connecting shell (33) is fixedly connected to the back of the main book frame (1). A dust filter screen (331) is fixedly connected to the back of the connecting shell (33). A sealing cover is snap-fitted and fixed to the front side of the connecting shell (33), and the sealing cover is connected to one end of an air supply pipe (34). The other end of the air supply pipe (34) passes through the opening groove (31) on the fixing plate (3) and the rear support seat (7) and is communicated with a connecting pipe (8). An opening is formed inside the connecting shell (33), and a suction fan (36) and an electric heating rod (35) are respectively arranged on the opening. The electric heating rod (35) is located behind the suction fan (36).

10. The combined office bookcase with a locking and protective structure according to claim 1, characterized in that, A plurality of through grooves (51) are formed in the connecting plate (5), and front support seats (6) and rear support seats (7) are arranged on the plurality of through grooves (51).

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