CN213664191U - Book clamping device and reading bookshelf - Google Patents

Abstract

The utility model provides a book clamping device and a reading bookshelf, relating to the technical field of learning tools, wherein the book clamping device comprises a fixed part, a first main body part, a second main body part and an adjusting part; the first main body part and the second main body part are oppositely arranged on the front side of the fixing part; the first main body part and the second main body part are both connected with the fixing part in a sliding mode through the adjusting part, and therefore the distance between the first main body part and the second main body part is adjusted through the adjusting part. The utility model provides a book clamping device sets up the mode into with fixed part sliding connection through with first main part and second main part for can form the space that is used for holding the spine on this book clamping device, place the spine of books in this space, avoid the spine to protruding to one side that is close to the reader, thereby avoid the page of turning over to be closed.

Description

Book clamping device and reading bookshelf

Technical Field

The utility model relates to a learning tools technical field particularly, relates to a book clamping device and bookshelf.

Background

Reading is a common learning and leisure activity, especially for students, who spend a lot of time reading every day. In general, when reading, a user needs to hold a book in hands or place the book on a desk and press the pages to turn the pages, which is not only inconvenient, but also easily causes fatigue and discomfort.

For convenience of reading, a reading bookshelf for fixing books is available at present, and the books are fixed through the reading bookshelf, so that the two hands of a reader are liberated, and the reading comfort level is improved; however, in the current reading bookshelf, after the book is turned over, the spine part of the book protrudes to the side close to the reader on the surface of the reading bookshelf, so that the turned-over pages are easy to be closed again, and the use of the reader is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be that the book that current reading frame turned over in the use is easily closed again, leads to the use inconvenient.

In order to solve the above problems, the present invention provides a book clamping device, which comprises a fixing portion, a first main body portion, a second main body portion and an adjusting portion; wherein the content of the first and second substances,

the first main body part and the second main body part are oppositely arranged on the front side of the fixing part;

the first main body part and the second main body part are both connected with the fixing part in a sliding mode through the adjusting part, and therefore the distance between the first main body part and the second main body part is adjusted through the adjusting part.

Optionally, the adjusting part comprises an adjusting rod and a gear adjusting structure fixedly connected with the adjusting rod; the adjusting rod is rotatably connected with the fixing part; the gear adjusting structure is simultaneously connected with the first main body part and the second main body part in a sliding mode.

Optionally, the gear adjusting structure includes a first bevel gear, a second bevel gear, a third bevel gear, a first threaded rod, a second threaded rod, a first slider, and a second slider, where the first bevel gear is fixedly connected to the adjusting rod, the second bevel gear and the third bevel gear are disposed opposite to each other, and both the second bevel gear and the third bevel gear are engaged with the first bevel gear; the second bevel gear is fixedly connected with the first threaded rod, and the third bevel gear is fixedly connected with the second threaded rod; the first sliding block is connected with the first threaded rod through threads, and the first sliding block is fixedly connected with the first main body part; the second sliding block is connected with the second threaded rod through threads, and the second sliding block is fixedly connected with the second main body part.

Optionally, the number of the gear adjusting structures is two; the two gear adjusting structures are respectively arranged at two ends of the fixing part.

Optionally, the gear adjusting structure further comprises an adjusting knob, and the adjusting knob is fixedly connected to the bottom end of the adjusting rod.

Optionally, a first groove of an L-shaped structure is disposed on the inner side of the first main body portion, a second groove of an L-shaped structure is disposed on the inner side of the second main body portion, and the first groove is matched with the second groove.

Optionally, a first arc-shaped structure is arranged on the inner side of the first main body part, and the first arc-shaped structure is located at the upper end of the first groove; a second arc-shaped structure is arranged on the inner side of the second main body part and is arranged at the upper end of the second groove; the first arc-shaped structure is matched with the second arc-shaped structure.

Another object of the present invention is to provide a reading bookshelf, comprising the book clamping device, and a support rotatably connected to the book clamping device; the book clamping device is also provided with a book pressing structure.

Optionally, the bracket includes a base, a vertical support part rotatably connected to the base, and a horizontal support part rotatably connected to the vertical support part; the horizontal supporting part is rotationally connected with the book clamping device.

Optionally, the vertical support portion includes a first connecting rod, a second connecting rod sleeved outside the first connecting rod, and a first oil cylinder; the bottom end of the second connecting rod is rotatably connected with the base; a piston rod of the first oil cylinder is fixedly connected with the second connecting rod, and the bottom end of the first oil cylinder is rotatably connected with the base and the first connecting rod; the horizontal supporting part comprises a third connecting rod, a fourth connecting rod and a connecting plate which is rotationally connected with the third connecting rod and the fourth connecting rod; the third connecting rod and the fourth connecting rod are both rotationally connected with the book clamping device; the top end of the first connecting rod and the top end of the second connecting rod are rotatably connected with the connecting plate; the support further comprises a second oil cylinder, the bottom end of the second oil cylinder is rotatably connected with the second connecting rod, and a piston rod of the second oil cylinder is rotatably connected with the third connecting rod.

Compared with the prior art, the utility model provides a book clamping device has following advantage:

the utility model provides a book clamping device, on the one hand through set up first main part and second main part into with fixed part sliding connection's mode for can form the space that is used for holding the spine on this book clamping device, place the spine of books in this space, the interval between first main part and the second main part is adjusted to rethread adjusting part, make second main part and second main part press from both sides tightly books, avoid the spine to protruding to one side that is close to the reader, thereby the page of avoiding turning over open is closed, improve the comfort level of using; on the other hand, because the interval between first main part and the second main part can be adjusted, consequently, the book clamping device that this application provided can carry out the centre gripping to the books of different thickness, and application scope is wide.

Drawings

Fig. 1 is a schematic view of the back structure of the book clamping device of the present invention;

fig. 2 is a schematic structural diagram of the book clamping device of the present invention;

fig. 3 is a schematic view of the internal structure of the book clamping device of the present invention;

fig. 4 is a schematic structural diagram of the adjusting part of the present invention;

fig. 5 is a schematic view of the reading bookshelf of the present invention;

fig. 6 is a partially enlarged view of a portion a in fig. 1.

Description of reference numerals:

1-a stationary part; 11-dovetail connection; 2-a first body portion; 21-a first groove; 211-a first clamping plate; 22-a first arc-shaped structure; 3-a second body portion; 31-a second groove; 311-a second clamping plate; 32-a second arc-shaped structure; 4-an adjustment section; 41-adjusting rod; 411-a housing; 412-a baffle; 42-gear adjustment structure; 421-a first bevel gear; 422-a second bevel gear; 423-third bevel gear; 424-first threaded rod; 425-a second threaded rod; 426-a first slider; 427-a second slider; 428-adjusting knob; 5-a bracket; 51-a base; 52-vertical support; 521-a first link; 522-a second link; 523-a first oil cylinder; 53-horizontal support; 531-third link; 532-connecting plate; 533-fourth link; 54-a second cylinder; 6-book pressing structure.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "first" and "second" are used merely for simplifying the description, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present disclosure, unless otherwise expressly stated or limited, a first feature "on" or "under" a first feature may comprise the first feature and a second feature in direct contact, or may comprise the first feature and the second feature not in direct contact but in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "below," and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In order to solve the problem that the existing reading frame is inconvenient to use because the opened book is easy to be closed again in the using process, the utility model provides a book clamping device, which is shown in figure 1 and comprises a fixed part 1, a first main body part 2, a second main body part 3 and an adjusting part 4; the first main body part 2 and the second main body part 3 are oppositely arranged on the front side of the fixing part 1; the first main body part 2 and the second main body part 3 are both connected with the fixing part 1 in a sliding mode through the adjusting part 4, so that the distance between the first main body part 2 and the second main body part 3 can be adjusted through the adjusting part 4.

The front side in the present application specifically refers to the side of the book clamping device that is close to the user when the book clamping device is in a use state.

The fixing part 1, the first main body part 2 and the second main body part 3 are all plate-shaped structures; the first main body part 2 and the second main body part 3 are both connected with the fixing part 1 in a sliding mode, the fixing part 1 is located on the rear side, the first main body part 2 and the second main body part 3 are both located on the front side, when a gap is reserved between the first main body part 2 and the second main body part 3, a groove which is formed by the first main body part 2, the second main body part 3 and the fixing part 1 and is sunken towards the rear side is formed in the book clamping device, and the groove forms a space for accommodating a spine; through the effect of adjusting part 4 for first main part 2, second main part 3 all can slide along fixed part 1, adjusts the interval between first main part 2, the second main part 3 through sliding, that is to say adjusts the space that holds the spine.

When the book clamping device is used specifically, firstly, the distance between the first main body part 2 and the second main body part 3 is adjusted to be larger than the thickness of a book to be read through the adjusting part 4, then the spine part of the book is placed between the first main body part 2 and the second main body part 3, and the distance between the first main body part 2 and the second main body part 3 is reduced through the adjusting part 4, so that the first main body part 2 and the third main body part 3 are abutted against the book and clamp the book, and the book is fixed.

The utility model provides a book clamping device, on the one hand through set up first main part 2 and second main part 3 into with fixed part 1 sliding connection's mode, make can form the space that is used for holding the spine on this book clamping device, place the spine of books in this space, the interval between first main part 2 and second main part 3 is adjusted through adjusting part 4, make second main part 2 and second main part 3 press from both sides tightly books, avoid the spine to protruding to one side that is close to the reader, thereby the page of avoiding turning over is closed, improve the comfort level of using; on the other hand, because the interval between first main part 2 and the second main part 3 can be adjusted, consequently, the book clamping device that this application provided can carry out the centre gripping to the books of different thickness, and application scope is wide.

In order to adjust the distance between the first main body 2 and the second main body 3, referring to fig. 3, the adjusting part 4 in this application includes an adjusting rod 41, and a gear adjusting structure 42 fixedly connected to the adjusting rod 41; the adjusting rod 41 is rotatably connected with the fixed part 1; the gear adjustment structure 42 is slidably connected to both the first body portion 2 and the second body portion 3.

In order to improve the structural stability and the aesthetic degree of the book clamping device, the fixing part 1 is preferably of a hollow structure, and the adjusting rod 41 penetrates through the fixing part 1 and is rotatably connected with the fixing part 1; meanwhile, the gear adjusting structure 42 is disposed in the fixing portion 1, and the gear adjusting structure 42 is slidably connected to both the first main body portion 2 and the second main body portion 3.

When the distance between the first main body part 2 and the second main body part 3 needs to be adjusted, the adjusting rod 41 is rotated, the gear adjusting structure 42 is driven to move while the adjusting rod 41 rotates, and then the first main body part 2 and the second main body part 3 are driven to correspondingly slide along the fixing part 1 through the movement of the gear adjusting structure 42, so that the distance between the first main body part 2 and the second main body part 3 is adjusted.

Specifically, referring to fig. 3 and 4, in the present application, the gear adjustment structure 42 includes a first bevel gear 421, a second bevel gear 422, a third bevel gear 423, a first threaded rod 424, a second threaded rod 425, a first slider 426, and a second slider 427, where the first bevel gear 421 is fixedly connected to the adjustment rod 41, the second bevel gear 422 and the third bevel gear 423 are disposed opposite to each other, and both the second bevel gear 422 and the third bevel gear 423 are engaged with the first bevel gear 421; the second bevel gear 422 is fixedly connected with the first threaded rod 424, and the third bevel gear 423 is fixedly connected with the second threaded rod 425; the first sliding block 426 is connected with the first threaded rod 424 through threads, and the first sliding block 426 is fixedly connected with the first main body part 2; the second slider 427 is connected with the second threaded rod 425 through threads, and the second slider 427 is fixedly connected with the second main body part 3; the number of the first slider 426 and the second slider 427 is two.

When the distance between the first main body part 2 and the second main body part 3 needs to be adjusted, the adjusting rod 41 is rotated, and the first bevel gear 421 is driven to rotate while the adjusting rod 41 rotates; because the second bevel gear 422 and the third bevel gear 423 are both meshed with the first bevel gear 421, and the second bevel gear 422 and the third bevel gear 423 are arranged oppositely, the first bevel gear 421 rotates and simultaneously drives the second bevel gear 422 and the third bevel gear 423 to rotate in opposite directions, and further drives the first threaded rod 424 and the second threaded rod 425 to rotate through the second bevel gear 422 and the third bevel gear 423, respectively, and the rotation directions of the first threaded rod 424 and the second threaded rod 425 are opposite; since first sliding block 426 is connected to first threaded rod 424 through a thread, and the position of first threaded rod 424 does not change during rotation, first sliding block 426 is driven to move in the axial direction of first threaded rod 424 while first threaded rod 424 rotates; since the first sliding block 426 is fixedly connected with the first main body part 2, the first sliding block 426 drives the first main body part 2 to move along the axial direction of the first threaded rod 424 while moving; also, since the second slider 427 is connected to the second threaded rod 425 by a screw and the position of the second threaded rod 425 does not change during the rotation, the second slider 427 is driven to move in the axial direction of the second threaded rod 425 while the second threaded rod 425 rotates; since the second sliding block 427 is fixedly connected with the second main body portion 3, the second sliding block 427 moves while driving the second main body portion 3 to move along the axial direction of the second threaded rod 425; since the first screw rod 424 and the second screw rod 425 rotate in opposite directions, the first slider 426 and the second slider 427 move in opposite directions, so that the first body 2 and the second body 3 move in opposite directions, that is, the first body 2 and the second body 3 always move in a direction approaching the center of the book holder or move away from the center of the book holder at the same time, thereby increasing or decreasing the distance between the first body 2 and the second body 3, and further performing operations such as clamping or removing a spine.

The maximum thickness of the book clamped by the book clamping device is determined by the lengths of the first threaded rod 424 and the second threaded rod 425, and the maximum thickness of the book clamped by the book clamping device is preferably 24 mm; the thickness range can meet the clamping requirements of most books on the market.

The number of the gear adjusting structures 42 can be one or more; in order to improve the structural stability of the book clamping device, the number of the gear adjusting structures 42 is preferably two; the two gear adjusting structures 42 are respectively arranged at two ends of the fixing part 1.

To facilitate adjustment of the adjustment lever 41, the gear adjustment structure 42 in the present application further includes an adjustment knob 428, and the adjustment knob 428 is fixedly connected to the bottom end of the adjustment lever 41.

The bottom end of the adjusting rod 41 in the present application specifically means the end of the adjusting rod 41 near the lower side of the book when the book clamping device is used. Through the arrangement of the adjusting knob 428 fixedly connected with the adjusting rod 41, the adjusting rod 41 can be driven to rotate by rotating the adjusting knob 428, so that the operation difficulty is reduced, and the use is convenient.

Because the length of the adjusting rod 41 is long, a part of the structure extends out of the fixing part 1; in order to improve the structural stability and the aesthetic degree, the present application preferably arranges a housing 411 at the exposed part of the adjusting rod 41, the housing 411 is connected with the fixing part 1, and the adjusting rod 41 is rotatably connected with the housing 411; further, a baffle 412 is arranged at the bottom end of the casing 411, the baffle 412 is fixedly connected with the casing 411, is vertically arranged with the first main body part 2 and the second main body part 3, and is located at the bottom ends of the first main body part 2 and the second main body part 3, so that when the first main body part 2 and the second main body part 3 clamp books, the baffle 412 is used for blocking the books, and the books are prevented from sliding down from the book clamping device.

Because the spine part is usually provided with the cementing part which has higher hardness, the cementing part of the spine is directly clamped and difficult to clamp, and the spine is easy to slip; in order to improve the clamping force for books, referring to fig. 1, 3 and 6, in the present application, a first groove 21 with an L-shaped structure is disposed on the inner side of a first main body portion 2, a second groove 31 with an L-shaped structure is disposed on the inner side of a second main body portion 3, the first groove 21 is matched with the second groove 31, and when a spine is clamped, the first groove 21 and the second groove 31 jointly form a space for accommodating a gluing portion; the inner side of the first main body 2 and the inner side of the second main body 3 respectively refer to a part where the second main body 2 and the second main body 3 abut against the book and clamp the book.

Furthermore, in order to avoid the slip of the clamped book, a first clamping plate 211 made of stainless steel is arranged at the top of the first groove 21, a second clamping plate 311 made of stainless steel is arranged at the top of the second groove 31, and the book is clamped through the first clamping plate 211 and the second clamping plate 311, so that the friction force between the book clamping device and the book is increased, and the clamping stability is improved.

Further, in order to make the clamped book better fit with the book clamping device and prevent the opened book from being closed, a first arc-shaped structure 22 is arranged on the inner side of the first main body part 2, and the first arc-shaped structure 22 is located at the upper end of the first groove 21; a second arc-shaped structure 32 is arranged on the inner side of the second main body part 3, and the second arc-shaped structure 32 is arranged at the upper end of the second groove 31; the first arcuate structure 22 is adapted to the second arcuate structure 32.

The first arc-shaped structure 22 is connected with the first clamping plate 211, and the second arc-shaped structure 32 is connected with the second clamping plate 311; through setting up first arc structure 22 and second arc structure 32 for place the spine in the space that first recess 21 and second recess 31 formed after, the books both sides of opening can be better laminate mutually with first main part 2, second main part 3 respectively, make the books of opening can be spread on double-layered book device, thereby avoid the page of opening to be closed convenient to use.

Another object of the present invention is to provide a reading bookshelf, which comprises the book clamping device as described above, and a bracket 5 rotatably connected to the book clamping device; the book clamping device is also provided with a book pressing structure 6.

The bracket 5 is used for supporting the reading bookshelf, so that the clamped book can be adjusted to a proper height, a proper angle and the like, and a user can read the book conveniently; the book pressing structure 6 is used for fixing the opened pages on the book clamping device and preventing the opened pages from being closed.

The book pressing structure 6 may be any structure capable of fixing opened pages, such as clips fixedly connected to the first body portion 2 and the second body portion 3, and the specific structural form of the book pressing structure 6 is not limited herein.

The bracket 5 can also be in any structure which can be connected with the book clamping device; referring to fig. 5, the preferred bracket 5 of the present application includes a base 51, a vertical support 52 rotatably coupled to the base 51, and a horizontal support 53 rotatably coupled to the vertical support 52; the horizontal support part 53 is rotatably connected with the book clamping device.

The base 51 may be a structure that is convenient to be placed on a desktop or a structure that is convenient to be fixed with the desktop through clamping, and the specific structure of the base 51 is not limited in this application.

Specifically, the vertical support portion 52 in the present application includes a first link 521, a second link 522 sleeved outside the first link 521, and a first cylinder 523; the bottom end of the second link 522 is rotatably connected with the base 51; a piston rod of the first cylinder 523 is fixedly connected with the second link 522, and a bottom end of the first cylinder 523 is rotatably connected with the base 51 and the first link 521.

The horizontal support portion 53 includes a third link 531 and a fourth link 533 parallel to each other, and a connection plate 532 rotatably connected to the third link 531 and the fourth link 533; the third connecting rod 531 and the fourth connecting rod 533 are rotatably connected with the book clamping device; the top ends of the first link 521 and the second link 522 are rotatably connected with the connecting plate 532; the bracket 5 further comprises a second oil cylinder 54, the bottom end of the second oil cylinder 54 is rotatably connected with the second connecting rod 522, and the piston rod of the second oil cylinder 54 is rotatably connected with the third connecting rod 531.

Specifically, in the present application, the fixed portion 1 of the book clamping device is provided with the dovetail connection portion 11, and the third link 531 is rotatably connected to the dovetail connection portion 11 by a pin.

Vertical support portion 52 in this application, through locating the outside of first connecting rod 521 with second connecting rod 522 cover, on the one hand improve the aesthetic property of support 5, on the other hand, the tie point of first connecting rod 521 and connecting plate 532, the tie point of first connecting rod 521 and base 51, the tie point of second connecting rod 522 and connecting plate 532, the tie point of second connecting rod 522 and base 51 constitutes a parallelogram structure jointly, it is stable to make support 5's angle remain through this parallelogram structure, avoid changing by oneself support 5's angle under the condition that the user does not adjust in the use, improve support 5's structural stability and security.

The horizontal support 53 in the present application, through the third link 531, the fourth link 533, the connecting plate 532 and the dovetail connection 11, together form a parallelogram structure, and the parallelogram structure stabilizes the angle of the reading rack, so that the angle of the reading rack is not changed by the weight of the reading rack during use.

The utility model provides a reading bookshelf through two parallelogram structures in the support 5, makes this support 5 can adjust reading bookshelf's height and angle on the one hand, and on the other hand makes this support 5 again after adjusting the completion, and the angle can remain unchanged, improves the stability of structure.

The number of the first oil cylinders 523 is two, and the two first oil cylinders 523 are respectively arranged on two sides of the second connecting rod 522; for convenience in operation, the damping direction of the second oil cylinder 54 is preferably upward, so that on one hand, the book clamping device is conveniently supported through the damping of the second oil cylinder 54, and the stability of the reading bookshelf structure is improved; on the other hand, the difficulty of lifting the book clamping device upwards is reduced, so that the difficulty of adjusting the angle of the book clamping device is reduced.

Also, in order to adjust the bracket 5, it is preferable that the damping direction of the first cylinder 523 is downward, so that when the vertical support 52 is adjusted forward or backward, the damping force of the first cylinder 523 needs to be overcome, and the vertical support 52 adjusted forward or backward can be kept balanced by the first cylinder 523, and at the same time, the difficulty of adjusting the vertical support 52 to the vertical direction can be reduced, which is convenient for operation.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims (10)

1. A book clamping device is characterized by comprising a fixing part (1), a first main body part (2), a second main body part (3) and an adjusting part (4); wherein the content of the first and second substances,

the first main body part (2) and the second main body part (3) are oppositely arranged on the front side of the fixing part (1);

the first main body part (2) and the second main body part (3) are both in sliding connection with the fixing part (1) through the adjusting part (4), so that the distance between the first main body part (2) and the second main body part (3) is adjusted through the adjusting part (4).

2. Book clamping device according to claim 1, characterized in that the adjusting part (4) comprises an adjusting lever (41), a gear adjusting structure (42) fixedly connected with the adjusting lever (41); the adjusting rod (41) is rotatably connected with the fixing part (1); the gear adjusting structure (42) is simultaneously connected with the first main body part (2) and the second main body part (3) in a sliding manner.

3. The book clamping device of claim 2, characterized in that the gear adjusting structure (42) comprises a first bevel gear (421), a second bevel gear (422), a third bevel gear (423), a first threaded rod (424), a second threaded rod (425), a first sliding block (426) and a second sliding block (427), wherein the first bevel gear (421) is fixedly connected with the adjusting rod (41), the second bevel gear (422) and the third bevel gear (423) are oppositely arranged, and the second bevel gear (422) and the third bevel gear (423) are engaged with the first bevel gear (421); the second bevel gear (422) is fixedly connected with the first threaded rod (424), and the third bevel gear (423) is fixedly connected with the second threaded rod (425); the first sliding block (426) is in threaded connection with the first threaded rod (424), and the first sliding block (426) is fixedly connected with the first main body part (2); the second sliding block (427) is connected with the second threaded rod (425) through threads, and the second sliding block (427) is fixedly connected with the second main body part (3).

4. Book clamping device according to claim 2 or 3, characterized in that the number of gear wheel adjustment structures (42) is two; the two gear adjusting structures (42) are respectively arranged at two ends of the fixed part (1).

5. Book clamping device according to claim 4, characterized in that the gear wheel adjustment structure (42) further comprises an adjustment knob (428), the adjustment knob (428) being fixedly connected to the bottom end of the adjustment lever (41).

6. Book clamping device according to claim 1, characterized in that the inside of the first body part (2) is provided with a first groove (21) of L-shaped configuration, the inside of the second body part (3) is provided with a second groove (31) of L-shaped configuration, and the first groove (21) is adapted to the second groove (31).

7. Book clamping device according to claim 6, characterized in that the inner side of the first body part (2) is provided with a first arc-shaped structure (22), the first arc-shaped structure (22) being located at the upper end of the first recess (21); a second arc-shaped structure (32) is arranged on the inner side of the second main body part (3), and the second arc-shaped structure (32) is arranged at the upper end of the second groove (31); the first arc-shaped structure (22) is matched with the second arc-shaped structure (32).

8. A reading bookshelf, characterized by comprising a book clamping device according to any one of claims 1-7, and a bracket (5) rotatably connected with the book clamping device; the book clamping device is also provided with a book pressing structure (6).

9. Reading bookshelf according to claim 8, wherein said support (5) comprises a base (51), a vertical support (52) rotatably connected to said base (51), and a horizontal support (53) rotatably connected to said vertical support (52); the horizontal supporting part (53) is rotationally connected with the book clamping device.

10. A reading bookshelf according to claim 9, wherein the vertical support part (52) comprises a first connecting rod (521), a second connecting rod (522) sleeved outside the first connecting rod (521), a first oil cylinder (523); the bottom end of the second connecting rod (522) is rotatably connected with the base (51); a piston rod of the first oil cylinder (523) is fixedly connected with the second connecting rod (522), and the bottom end of the first oil cylinder (523) is rotatably connected with the base (51) and the first connecting rod (521); the horizontal support part (53) comprises a third connecting rod (531) and a fourth connecting rod (533), and a connecting plate (532) rotatably connected with the third connecting rod (531) and the fourth connecting rod (533); the third connecting rod (531) and the fourth connecting rod (533) are rotatably connected with the book clamping device; the top end of the first connecting rod (521) and the top end of the second connecting rod (522) are both rotatably connected with the connecting plate (532); the support (5) further comprises a second oil cylinder (54), the bottom end of the second oil cylinder (54) is rotatably connected with the second connecting rod (522), and a piston rod of the second oil cylinder (54) is rotatably connected with the third connecting rod (531).

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