CN114766834B - Book compact shelf easy to extract - Google Patents

Abstract

The invention relates to a compact shelf, in particular to a book compact shelf easy to extract. The invention provides a book compact shelf which is convenient for people to accurately take out desired books and is easy to extract. The utility model provides an easy books compact shelf of drawing, includes shell, first slide rail, first slider, first spring and extraction mechanism etc. five first slide rails have been placed to the inboard even interval in shell upper portion, and all slidingtype is equipped with the first slider that is used for placing books on the first slide rail, is connected with first spring between the first slide rail of first slider rear side lower part all and homonymy, and the lower part is equipped with extraction mechanism in the shell. According to the invention, the pedal of the corresponding book is stepped on, the pedal drives the second rack to move downwards, the first rack and the upper part of the first rack are driven by the gear to move upwards, the screw is driven by the output shaft of the motor to rotate, and the first slider and the corresponding book are driven by the push-out block to move forwards, so that people can accurately take out the desired book.

Description

An easy-to-extract book shelf

technical field

The invention relates to a compact shelf, in particular to an easy-to-extract book compact shelf.

Background technique

Book racks are generally used to store books. When an area of an existing book rack is full of books, the books will be squeezed tightly and it will be difficult to take them out.

Patent Publication No. CN204351374U discloses a kind of easy-to-extract book compact shelf, including multiple compact shelves, ultrasonic instruments and slide rails, the lower ends of multiple compact shelves slide side by side and are installed on symmetrical parallel slide rails, and the compact shelf is installed on the outer wall. There is a control hand that controls the movement of the compact rack. There are multiple intensive boxes evenly arranged in the compact rack. The ultrasonic instrument is fixedly installed in the dense box on the lowermost layer of the compact rack. There is a pumping board located on the outside of the dense box. The dense rack can quickly and effectively take out books through the functions of the drawing board and the bottom board, which is simple and convenient, and does not cause confusion among the books. However, when the books are full, the books are pulled out through the drawing board, and it is easy to take out the adjacent books together, and the books are close to each other, so it is easy to take the wrong book.

How to design an easy-to-extract book compact shelf that is convenient for people to accurately take out desired books is a technical problem to be solved in this patent.

Contents of the invention

In order to overcome the disadvantages of the prior art that the books are pulled out by pulling out the drawer, it is easy to bring out the adjacent books together, and the books are close together, and it is easy to take the wrong book when taking the book, the technical problem to be solved: provide The utility model relates to an easy-to-extract book dense shelf which is convenient for people to accurately take out desired books.

The technical solution is: an easy-to-extract book compact shelf, including a housing, a first slide rail, a first slider, a first spring, an extracting mechanism and a pushing mechanism, and five first slide rails are evenly spaced inside the upper part of the housing , the first sliding rails are all slidingly provided with the first sliding block for placing books, the first spring is connected between the lower part of the rear side of the first sliding block and the first sliding rail on the same side, and the lower part of the shell is provided with a convenient An extracting mechanism for people to accurately take out desired books, and a pushing mechanism for pushing out books is provided on the inner upper part of the casing.

Further, the extracting mechanism includes a first rack, a second spring, a first fixing member, a gear, a second fixing member, a third fixing member, a second rack and a third spring, and the bottoms of the five first slide rails are all A first rack is provided, and five first fixing pieces are evenly spaced in the middle of the rear side of the housing, and second springs are connected between the first fixing pieces and the first slide rail on the same side, and the lower part of the housing is evenly spaced. There are five third fixing parts, and the second fixing part is provided on the top and rear side of the third fixing part, and the upper part of the second fixing part is equipped with gears, and the gears are all meshed with the first rack on the same side, and the third fixing part The front side of the upper part of the part is slidingly provided with a second rack, and the second racks are meshed with the gears on the same side, and a third spring is connected between the second racks and the third fixing part on the same side.

Further, the pushing mechanism includes a motor, a screw, a push-out block, a second slide rail and a fourth fixing piece. A motor is arranged on the left rear side of the upper part of the casing, and the output shaft of the motor is connected with a screw through a coupling. Both sides are provided with second slide rails, and between the second slide rails, there is a push-out block for pushing out books. The push-out block is threadedly connected with the screw rod. The fixing part is slidably connected with the push-out block.

Further, it also includes a clamping mechanism for fixing books. The clamping mechanism includes a splint, a fifth fixing piece and a fourth spring. The fifth fixing piece is slidingly provided on the right side of the five first sliders. The left side of the fixing part is provided with a splint that cooperates with the first slider to clamp the book, and a fourth spring is connected between the right side of the first slider and the fifth fixing part on the same side.

Further, it also includes a tilting mechanism that is convenient for people to take out books. The tilting mechanism includes a sixth fixing piece, a first torsion spring, a movable plate and a seventh fixing piece. The middle part of the sixth fixed part is rotatably provided with a movable plate for carrying books, and the movable plates are all in contact with the splint on the same side, and two first torsion springs are connected between the movable plate and the sixth fixed part on the same side , the upper front side of the shell is evenly spaced with the seventh fixed piece, and the movable plate is in contact with the seventh fixed piece after moving.

Further, it also includes a dust-proof sealing mechanism. The sealing mechanism includes an eighth fixing piece, a second torsion spring, a cover, a handle, a ninth fixing piece, a third torsion spring and a tenth fixing piece. The left and right sides of the side are equipped with an eighth fixing piece, and the eighth fixing piece is provided with a cover for closing the upper part of the shell in a rotating manner. A second torsion spring is connected between the eighth fixing piece and the cover, and the middle and lower part of the front side of the cover A handle for opening the cover is provided, the left and right sides of the upper front side of the shell are provided with a ninth fixing part, and the ninth fixing part is provided with a tenth fixing part in a rotating manner, and the tenth fixing part is in contact with the cover, and the tenth fixing part is in contact with the cover. A third torsion spring is connected between each fixing piece and the ninth fixing piece on the same side.

Further, it also includes a selection mechanism that allows people to know the storage position of books more conspicuously. The selection mechanism includes a third slide rail, a fifth spring, a second slide block, a drawstring and an eleventh fixing piece. The upper part of the shell is uniform Five third slide rails are arranged at intervals, and the third slide rails are all slidably provided with second slide blocks for affixing prompt labels of corresponding books, and the rear sides of the second slide blocks are connected with the third slide rails. For the fifth spring, five eleventh fixing pieces are evenly spaced on the rear side of the cover, and pull ropes are connected between the eleventh fixing pieces and the second slider on the same side.

Further, pedals are provided at the bottoms of the five second racks.

The advantages of the present invention are:

1. In the present invention, by stepping on the pedal corresponding to the book, the pedal drives the second rack to move downward, and then drives the first rack and its upper parts to move upward through the gear, and then drives the screw to rotate through the output shaft of the motor, and then pushes out the block Drive the first slider and the corresponding books to move forward, so that people can accurately take out the books they want;

2. In the present invention, under the action of the fourth spring, the splint cooperates with the first slider to clamp the book, preventing the book from slipping off the first slider due to external factors;

3. In the present invention, the movable plate is in contact with the seventh fixing part, and then drives the movable plate to rotate and tilt, and at the same time, the movable plate squeezes the splint to the right to separate from the book, so that the book slides forward, and it is convenient for people to take out the book;

4. The present invention closes the upper part of the casing by the cover, thereby preventing dust from books;

5. In the present invention, by affixing the reminder label of the book on the corresponding second slider, it can make people more conspicuously know the storage location of the corresponding book.

Description of drawings

Fig. 1 is a schematic diagram of the first three-dimensional structure of the present invention.

Fig. 2 is a schematic diagram of the second three-dimensional structure of the present invention.

Fig. 3 is a schematic cross-sectional three-dimensional structure diagram of the present invention.

Fig. 4 is a schematic perspective view of the three-dimensional structure of the extracting mechanism of the present invention.

Fig. 5 is a schematic diagram of a cross-sectional three-dimensional structure of the extracting mechanism of the present invention.

Fig. 6 is a schematic diagram of the first three-dimensional structure of the pushing mechanism of the present invention.

Fig. 7 is a schematic diagram of the second three-dimensional structure of the pushing mechanism of the present invention.

Fig. 8 is a schematic diagram of the first three-dimensional structure of the clamping mechanism of the present invention.

Fig. 9 is a schematic diagram of the second three-dimensional structure of the clamping mechanism of the present invention.

Fig. 10 is a schematic diagram of the first three-dimensional structure of the tilting mechanism of the present invention.

Fig. 11 is a schematic diagram of the second three-dimensional structure of the tilting mechanism of the present invention.

Fig. 12 is a schematic diagram of the first three-dimensional structure of the sealing mechanism of the present invention.

Fig. 13 is a schematic diagram of the second three-dimensional structure of the sealing mechanism of the present invention.

Fig. 14 is a schematic diagram of the third three-dimensional structure of the sealing mechanism of the present invention.

Fig. 15 is a schematic diagram of a cross-sectional three-dimensional structure of the selecting mechanism of the present invention.

Fig. 16 is a schematic perspective view of the three-dimensional structure of the selection mechanism of the present invention.

Reference numerals: 1_housing, 2_first slide rail, 3_first slider, 4_first spring, 5_drawing mechanism, 51_first rack, 52_second spring, 53_first Fixed part, 54_ gear, 55_ the second fixed part, 56_ the third fixed part, 57_ the second rack, 58_ the third spring, 6_ pushing mechanism, 61_ motor, 62_ screw rod, 63_ push out Block, 64_second slide rail, 65_fourth fixture, 7_clamping mechanism, 71_cleat, 72_fifth fixture, 73_fourth spring, 8_tilting mechanism, 81_sixth fixture , 82_ first torsion spring, 83_ movable plate, 84_ seventh fixed part, 9_ sealing mechanism, 91_ eighth fixed part, 92_ second torsion spring, 93_ cover, 94_ handle, 95_ the first Nine fixtures, 96_ the third torsion spring, 97_ the tenth fixture, 10_ selection mechanism, 101_ the third slide rail, 102_ the fifth spring, 103_ the second slide block, 104_ stay cord, 105_ Eleventh fixture.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example 1

An easy-to-extract book shelf, referring to Figures 1-7, includes a housing 1, a first slide rail 2, a first slider 3, a first spring 4, an extracting mechanism 5 and a pushing mechanism 6, and the inside of the upper part of the housing 1 is uniform Five first slide rails 2 are placed at intervals, and the first slide rails 2 are all slidably provided with a first slider 3. The first slider 3 is used to place books. A first spring 4 is connected between the first sliding rails 2 of the casing 1, and the lower part of the casing 1 is provided with an extracting mechanism 5, which is convenient for people to accurately take out the desired books. Used to launch books.

4-5, the extracting mechanism 5 includes a first rack 51, a second spring 52, a first fixing member 53, a gear 54, a second fixing member 55, a third fixing member 56, a second rack 57 and a first Three springs 58, the bottoms of the five first slide rails 2 are all provided with the first racks 51, and the middle part of the rear side of the housing 1 is evenly spaced and connected with five first fixing parts 53 by bolts, and the first fixing parts 53 are all the same as the same. There are second springs 52 connected between the first slide rails 2 on the side, and five third fixing pieces 56 are fastened to the lower part of the housing 1 at even intervals through bolts, and the rear sides of the tops of the third fixing pieces 56 are provided with second fixing pieces. 55, the upper part of the second fixing member 55 is provided with a gear 54 which is rotatable, and the gears 54 are all meshed with the first rack 51 on the same side, and the upper front side of the third fixing member 56 is slidingly provided with a second rack 57. The two racks 57 are meshed with the gear 54 on the same side, the third spring 58 is connected between the second racks 57 and the third fixing member 56 on the same side, and the bottoms of the five second racks 57 are equipped with pedals.

Referring to Figures 6-7, the pushing mechanism 6 includes a motor 61, a screw 62, a push-out block 63, a second slide rail 64 and a fourth fixing member 65, and a motor 61 is provided on the left rear side of the upper part of the casing 1, and the output shaft of the motor 61 is A screw rod 62 is connected by a coupling, and a second slide rail 64 is provided on the left and right sides of the upper part of the housing 1. A push-out block 63 is slidingly provided between the second slide rails 64. The push-out block 63 is used to push out books. 63 is threadedly connected with the screw rod 62 , and a fourth fixing piece 65 is provided on the upper right rear side of the inner casing 1 , and the fourth fixing piece 65 is slidably connected with the push-out block 63 .

When using this device, first put the books into the first slider 3 respectively, when people take the books, step on the pedal corresponding to the book, the pedal drives the second rack 57 to move downward, and the third spring 58 is stretched , the second rack 57 drives the gear 54 to rotate, and then drives the first rack 51 to move upward, the second spring 52 is stretched, and the first rack 51 drives the first slide rail 2, the first slider 3 and the first spring 4 to move upwards, then start the motor 61, the output shaft of the motor 61 rotates to drive the screw 62 to rotate, and then drives the push-out block 63 to move forward, when the push-out block 63 contacts the first slide block 3, then drives the first slide block 3 and the corresponding The books are moved forward, the first spring 4 is stretched, and after the first slider 3 and the books are moved forward to a suitable position, the motor 61 is turned off, so that people can accurately take out the desired books, and then start the motor 61, Control the rotation of the output shaft of the motor 61 to drive the screw rod 62 to reverse, and then drive the push-out block 63 to move backward and reset, the push-out block 63 is separated from the first slider 3, and then drives the first slide block 3 under the reset action of the first spring 4 Move backward to reset, then close the motor 61, and release the pedal at the same time, and then drive the pedal and the second rack 57 to move downward under the action of the third spring 58 to reset, and the second rack 57 drives the first tooth through the gear 54. The bar 51 , the first slide rail 2 , the first slider 3 and the first spring 4 move downward to reset, and the second spring 52 resets accordingly.

Example 2

On the basis of Embodiment 1, with reference to Fig. 2, Fig. 8 and Fig. 9, a clamping mechanism 7 is also included. The right side of a slide block 3 is all slidingly provided with a fifth fixing part 72, and the left side of the fifth fixing part 72 is provided with a splint 71, and the splint 71 cooperates with the first slide block 3 to clamp books, and the right side of the first slide block 3 is connected to the A fourth spring 73 is connected between the fifth fixing member 72 on the same side.

Move the fifth fixing part 72 to the right, the fifth fixing part 72 drives the splint 71 to move to the right, the fourth spring 73 is stretched, then put the book into the first slider 3, and then loosen the fifth fixing part 72, And then under the effect of the fourth spring 73, drive the fifth fixing member 72 and the clamping plate 71 to move to the left, so that the clamping plate 71 cooperates with the first slide block 3 to clamp the books, preventing the books from sliding out of the first slide block 3 due to external factors.

Referring to Fig. 2, Fig. 10 and Fig. 11, a tilting mechanism 8 is also included, and the tilting mechanism 8 includes a sixth fixed member 81, a first torsion spring 82, a movable plate 83 and a seventh fixed member 84, five first sliders 3 The lower part of the front side is provided with a sixth fixing piece 81, and the middle part of the sixth fixing piece 81 is equipped with a movable plate 83 in a rotating manner. The movable plate 83 is used to carry books. Two first torsion springs 82 are connected between the sixth fixed piece 81 on the same side, and the seventh fixed piece 84 is fixedly connected by bolts at even intervals on the front side of the upper part of the housing 1. After the movable plate 83 moves, it is connected with the seventh fixed piece The fixture 84 contacts.

Books are put into the first slide block 3, and are positioned on the movable plate 83, when the first slide block 3 moves upwards, and then drive the sixth fixed member 81, the first torsion spring 82 and the movable plate 83 to move upwards, then when the second When a slide block 3 moves forward, it further drives the sixth fixed member 81, the first torsion spring 82 and the movable plate 83 to move forward, and when the movable plate 83 contacts the seventh fixed member 84, it further drives the movable plate 83 to rotate, The first torsion spring 82 is deformed, the movable plate 83 is inclined, and then presses the clamping plate 71 and the fifth fixing member 72 to the right, and the fourth spring 73 is stretched, so that the clamping plate 71 is separated from the book, and the book slides out forward, thereby facilitating People take out books, and when the first slide block 3 moves backward, then drive the sixth fixed member 81, the first torsion spring 82 and movable plate 83 to move backward, movable plate 83 separates with the seventh fixed member 84, and then Under the reset action of a torsion spring 82, the movable plate 83 is reversed and reset, and at the same time, under the reset action of the fourth spring 73, the splint 71 and the fifth fixing part 72 are driven to move to the left and reset, and then when the first slider 3 moves downward , and further drives the sixth fixing member 81, the first torsion spring 82 and the movable plate 83 to move downward and reset.

Referring to Fig. 1, Fig. 12, Fig. 13 and Fig. 14, a sealing mechanism 9 is also included, and the sealing mechanism 9 includes an eighth fixing member 91, a second torsion spring 92, a cover 93, a handle 94, a ninth fixing member 95, a second Three torsion springs 96 and the tenth fixing part 97, the left and right sides of the front side of the top of the housing 1 are provided with the eighth fixing part 91, the eighth fixing part 91 is provided with a cover 93 in a rotating manner, and the cover 93 is used to close the upper part of the housing 1 , the second torsion spring 92 is connected between the eighth fixing member 91 and the cover 93, a handle 94 is provided at the middle and lower part of the front side of the cover 93, and the handle 94 is used to open the cover 93, and the left and right sides of the upper front side of the casing 1 are provided with There is the ninth fixed part 95, and the ninth fixed part 95 is provided with the tenth fixed part 97 in rotation, and the tenth fixed part 97 is all in contact with the cover 93, and the tenth fixed part 97 is all connected with the ninth fixed part 95 A third torsion spring 96 is connected between them.

Turn the tenth fixing part 97, the deformation of the third torsion spring 96 makes the tenth fixing part 97 separate from the cover 93, then the cover 93 is opened by the handle 94, the cover 93 rotates, the second torsion spring 92 is deformed, and people can open the cover 93 in the shell 1 Inner upper part deposits and withdraws books, after depositing and withdrawing, unclamps handle 94, and then drives cover 93 and handle 94 reverse resets under the effect of second torsion spring 92 resets, unclamps tenth fixing member 97 again, and then in the third Under the reset action of the torsion spring 96, the tenth fixing member 97 is reversed and reset, and then the cover 93 is limited. In this way, the cover 93 closes the upper part of the shell 1, thereby preventing the books from dust.

Referring to Fig. 2, Fig. 15 and Fig. 16, a selection mechanism 10 is also included, and the selection mechanism 10 includes a third slide rail 101, a fifth spring 102, a second slider 103, a pull cord 104 and an eleventh fixing member 105, Five third slide rails 101 are evenly spaced in the upper part of the housing 1, and the third slide rails 101 are all slidably provided with second sliders 103, and the second sliders 103 are used to affix reminder labels for corresponding books. The fifth spring 102 is connected between the rear side of the slider 103 and the third slide rail 101, and the rear side of the cover 93 is evenly spaced with five eleventh fixing pieces 105. A pull cord 104 is connected between the two sliders 103 .

When the cover 93 is opened, the cover 93 pulls the stay cord 104 through the eleventh fixing member 105, and then drives the second slider 103 to move forward through the stay cord 104, and the fifth spring 102 is stretched. The reminder label of the book is affixed on the corresponding second slide block 103, so that people can be more conspicuously aware of the storage position of the corresponding book. When the cover 93 was closed, the stay cord 104 was relaxed, and then the fifth spring 102 was reset. Under the action, the second slider 103 is driven to move backward and reset.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (4)

1. The utility model provides an easy books compact shelf of drawing, including shell (1), first slide rail (2), first slider (3) and first spring (4), five first slide rail (2) have evenly been placed to the inboard even interval in shell (1) upper portion, all slide on first slide rail (2) and be equipped with first slider (3) that are used for placing books, be connected with first spring (4) between first slide rail (2) of first slider (3) rear side lower part and homonymy, a serial communication port, still include extraction mechanism (5) and pushing mechanism (6), the lower part is equipped with extraction mechanism (5) that are convenient for people accurately take out the books of wanting in shell (1), upper portion is equipped with pushing mechanism (6) that are used for ejecting books in shell (1);

the extraction mechanism (5) comprises a first rack (51), a second spring (52), a first fixing piece (53), a gear (54), a second fixing piece (55), a third fixing piece (56), a second rack (57) and a third spring (58), wherein the bottoms of the five first sliding rails (2) are respectively provided with the first rack (51), five first fixing pieces (53) are uniformly spaced in the middle of the rear side in the shell (1), the second springs (52) are connected between the first fixing pieces (53) and the first sliding rails (2) on the same side, five third fixing pieces (56) are uniformly spaced in the lower part of the shell (1), the rear side of the top of the third fixing piece (56) is respectively provided with the second fixing piece (55), the upper part of the second fixing piece (55) is respectively provided with the gear (54), the gears (54) are respectively meshed with the first racks (51) on the same side, the front sides of the upper parts of the third fixing pieces (56) are respectively provided with the second racks (57), the second racks (57) respectively meshed with the gears (54) on the same side, and the third racks (57) are respectively connected with the third fixing pieces (58) on the same side;

the pushing mechanism (6) comprises a motor (61), a screw (62), a pushing block (63), a second sliding rail (64) and a fourth fixing piece (65), wherein the motor (61) is arranged on the left rear side of the inner upper part of the shell (1), the screw (62) is connected to the output shaft of the motor (61) through a coupling, the second sliding rails (64) are arranged on the left side and the right side of the inner upper part of the shell (1), the pushing block (63) for pushing out books is arranged between the second sliding rails (64) in a sliding mode, the pushing block (63) is in threaded connection with the screw (62), the fourth fixing piece (65) is arranged on the right rear side of the inner upper part of the shell (1), and the fourth fixing piece (65) is in sliding connection with the pushing block (63);

the book clamping device comprises a book clamping mechanism (7), and is characterized by further comprising a clamping plate (71), a fifth fixing piece (72) and a fourth spring (73), wherein the fifth fixing piece (72) is arranged on the right side of each of the five first sliding blocks (3) in a sliding mode, the clamping plate (71) matched with the first sliding blocks (3) to clamp the book is arranged on the left side of each of the fifth fixing pieces (72), and the fourth spring (73) is connected between the right side of each of the first sliding blocks (3) and the fifth fixing piece (72) on the same side;

the novel book taking device is characterized by further comprising an inclining mechanism (8) which is convenient for people to take out books, wherein the inclining mechanism (8) comprises a sixth fixing piece (81), a first torsion spring (82), a movable plate (83) and a seventh fixing piece (84), the sixth fixing piece (81) is arranged at the lower part of the front side of the five first sliding blocks (3), the movable plate (83) which is used for bearing the books is arranged in the middle of the sixth fixing piece (81) in a rotating mode, the movable plate (83) is contacted with a clamping plate (71) on the same side, two first torsion springs (82) are connected between the movable plate (83) and the sixth fixing piece (81) on the same side, the seventh fixing pieces (84) are uniformly arranged at the front side of the upper part in the shell (1) at intervals, and the movable plate (83) is contacted with the seventh fixing pieces (84) after moving.

2. The book compact shelf easy to extract according to claim 1, further comprising a sealing mechanism (9) with a dustproof effect, wherein the sealing mechanism (9) comprises an eighth fixing piece (91), a second torsion spring (92), a cover (93), a handle (94), a ninth fixing piece (95), a third torsion spring (96) and a tenth fixing piece (97), the eighth fixing piece (91) is rotatably arranged on the left side and the right side of the front side of the top of the shell (1), the cover (93) for closing the upper part of the shell (1) is rotatably arranged on the eighth fixing piece (91), a second torsion spring (92) is connected between the eighth fixing piece (91) and the cover (93), a handle (94) for opening the cover (93) is arranged on the middle lower portion of the front side of the cover (93), a ninth fixing piece (95) is arranged on the left side and the right side of the front side of the upper part of the shell (1), the tenth fixing piece (97) is rotatably arranged on the ninth fixing piece (95), and the tenth fixing piece (97) is in contact with the cover (93), and the ninth fixing piece (97) is connected with the ninth fixing piece (95) on the same side.

3. The book compact shelf easy to extract according to claim 2, further comprising a selection mechanism (10) for enabling people to know book storage positions more obviously, wherein the selection mechanism (10) comprises a third sliding rail (101), a fifth spring (102), a second sliding block (103), a pull rope (104) and an eleventh fixing piece (105), five third sliding rails (101) are uniformly arranged at the upper part in the shell (1) at intervals, a second sliding block (103) for attaching a prompt tag of a corresponding book is slidably arranged on each third sliding rail (101), a fifth spring (102) is connected between the rear side of each second sliding block (103) and the third sliding rail (101), five eleventh fixing pieces (105) are uniformly arranged at intervals on the rear side of the cover (93), and pull ropes (104) are connected between the eleventh fixing pieces (105) and the second sliding blocks (103) on the same side.

4. A compact shelf of books easy to draw according to claim 3, characterized in that the bottoms of the five second racks (57) are provided with pedals.

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