A book clip and reading stand with adjustable clamping thickness

Abstract

This invention provides a book clip and reading holder with adjustable clamping thickness. The book clip includes a base plate, a clamping plate, and a pivot. The clamping plate is rotatably connected to the base plate via the pivot and can slide axially. An elastic element is provided between the clamping plate and the base plate. The base plate has a first circumferential limiting structure, and the clamping plate has a second circumferential limiting structure. The first and second circumferential limiting structures contact each other to limit the circumferential movement of the clamping plate. In its natural state, the elastic element allows the second circumferential limiting structure to contact the first circumferential limiting structure. In its compressed state, the elastic element allows the second circumferential limiting structure to disengage from the first circumferential limiting structure, enabling the clamping plate to rotate relative to the base plate. This invention's book clip with adjustable clamping thickness can adjust the clamping thickness according to the thickness of the book, is easy to operate, has a higher adaptability to books of different thicknesses, and provides a tighter grip on the pages.

Description

Technical Field

[0001] This utility model relates to the technical field of school supplies, and more specifically to a book clip and reading stand with adjustable clamping thickness. Background Technology

[0002] A reading rack can hold books or papers, keeping them open for easy reading and thus replacing the user's hands. Users can conveniently do other things while reading, such as writing. However, in existing technology, the book clips on reading racks can only maintain a fixed clamping thickness and cannot adjust the clamping thickness according to the thickness of the book. This results in poor adaptability to books of different thicknesses, often causing thin books, magazines, or paper documents to slip too easily, while thicker books are frequently unable to be held. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a book clip with adjustable clamping thickness, which can adjust the clamping thickness according to books of different thicknesses, so that the book clip is more adaptable to books of different thicknesses and clamps the pages more tightly.

[0004] The technical solution of this utility model is to provide a book clip with adjustable clamping thickness, including a base plate, a clamping plate, and a rotating shaft. The clamping plate is rotatably connected to the base plate via the rotating shaft, and the clamping plate can slide axially on the rotating shaft. An elastic element is provided between the clamping plate and the base plate, and the elastic element can deform axially along the rotating shaft. A first circumferential limiting structure is provided on the base plate, and a second circumferential limiting structure is provided on the clamping plate. The first circumferential limiting structure contacts the second circumferential limiting structure to limit the clamping plate circumferentially, thereby locking the clamping plate to the base plate. In its natural state, the elastic element can cause the second circumferential limiting structure to contact the first circumferential limiting structure. In its compressed state, the elastic element can cause the second circumferential limiting structure to disengage from the first circumferential limiting structure, thereby unlocking the clamping plate and allowing it to rotate relative to the base plate.

[0005] Compared with the prior art, the adjustable clamping thickness book clip of this utility model has the following advantages: the clamping thickness of the book clip can be adjusted according to the thickness of the book. The adjustment process includes: sliding the clamping plate axially to compress the elastic element until the second circumferential limiting structure disengages from the first circumferential limiting structure, unlocking the clamping plate, then rotating the clamping plate to adjust the angle between the clamping plate and the base plate until the clamping thickness between the clamping plate and the base plate adapts to the thickness of the current book, and then releasing the clamping plate. The elastic element rebounds and causes the second circumferential limiting structure to contact the first circumferential limiting structure, so the second circumferential limiting structure is circumferentially limited, that is, the clamping plate is locked by the base plate. At this time, the clamping thickness of the book clip is adjusted. The operation is convenient and makes the book clip more adaptable to books of different thicknesses and clamps the pages more tightly.

[0006] Preferably, one of the second circumferential limiting structure or the first circumferential limiting structure is a protruding structure, and the other is a concave structure. When the second circumferential limiting structure contacts the first circumferential limiting structure, the protruding structure can be inserted into the concave structure and circumferentially limited by the concave structure. This structure is simple and easy to manufacture. Under the elastic force of the elastic element, the clamp moves axially until the second circumferential limiting structure contacts the first circumferential limiting structure, at which point the protruding structure can be smoothly inserted into the concave structure.

[0007] Preferably, the raised structure comprises a plurality of protrusions or protrusions evenly distributed in a ring, and the concave structure comprises a plurality of grooves evenly distributed in a ring. As the base plate rotates, any one of the protrusions or protrusions can fit into any one of the grooves. With this structure, regardless of how the clamping plate rotates relative to the base plate, when the second circumferential limiting structure contacts the first circumferential limiting structure, any one of the protrusions or protrusions of the raised structure can be smoothly inserted into the corresponding groove. The increase or decrease in the angle between the clamping plate and the base plate depends on the angle of the central angle of the adjacent protrusions or protrusions on the ring, or it can be said to depend on the angle of the central angle of the adjacent groove on the ring.

[0008] Preferably, the protruding structure is a plurality of protrusions or protrusions evenly distributed in a ring, and the concave structure is a recessed hole; the hole wall of the recessed hole protrudes from the end face of the third or second rotating shaft seat; or, the end face of the third or second rotating shaft seat where the recessed hole is located is provided with an annular groove corresponding to the ring formed by the protrusions or protrusions, the recessed hole is located in the annular groove, and the hole wall of the recessed hole protrudes from the bottom of the annular groove; as the base plate rotates, any one of the protrusions or protrusions can fit into the recessed hole. With this structure, regardless of how the clamping plate rotates relative to the base plate, when the second circumferential limiting structure contacts the first circumferential limiting structure, any protrusion or protrusion opposite to the groove hole can be smoothly inserted into the groove hole. The increase or decrease in the angle between the clamping plate and the base plate depends on the angle of the central angle of the adjacent protrusion or protrusion on the ring. If the wall of the groove hole is set to protrude from the end face where it is located, or if an annular groove corresponding to the ring formed by the protrusion or protrusion is set on the end face where the groove hole is located, and the groove hole is located in the annular groove, and the wall of the groove hole protrudes from the bottom of the annular groove, then one of the protrusions or protrusions can be smoothly inserted into the groove hole without being interfered with by the other protrusions or protrusions.

[0009] When the wall of the groove is set to protrude from the end face, one of the protrusions or protrusions is inserted into the groove, and the remaining protrusions or protrusions will not contact the end face where the groove is located; when the groove is located in the annular groove and the wall of the groove protrudes from the bottom of the annular groove, one of the protrusions or protrusions is inserted into the groove, and the remaining protrusions or protrusions are all located in the annular groove.

[0010] Preferably, the protruding structure is a protrusion or a protruding post, and the concave structure is a plurality of uniformly distributed grooves in a ring. As the base plate rotates, the protrusion or protruding post can fit into any one of the grooves. With this structure, regardless of how the clamping plate rotates relative to the base plate, when the second circumferential limiting structure contacts the first circumferential limiting structure, the protrusion or protruding post can be smoothly inserted into any one of the corresponding grooves. The increase or decrease in the angle between the clamping plate and the base plate depends on the angle of the central angle of the adjacent grooves on the ring.

[0011] Preferably, the protruding structure is a convex post with a regular polygonal cross-section, and the concave structure is a groove with a regular polygonal cross-section. The protruding structure can fit into the concave structure with a clearance. With this structure, regardless of how the clamping plate rotates relative to the base plate, when the second circumferential limiting structure contacts the first circumferential limiting structure, the protruding structure can be smoothly inserted into the concave structure with a clearance. The adjustment of the angle between the clamping plate and the base plate depends on the number of sides of the regular polygon, that is, the angle of the central angle of the circumcircle corresponding to the side of the regular polygon.

[0012] Preferably, one of the base plate or clamping plate is provided with a first and a second rotating shaft seat that are spaced apart and opposite each other, and the other is provided with a third rotating shaft seat. The third rotating shaft seat is connected between the first and second rotating shaft seats via the rotating shaft. The elastic element is disposed between the first and third rotating shaft seats, so that the third rotating shaft seat is spaced apart from the first rotating shaft seat but in contact with the second rotating shaft seat. A second circumferential limiting structure is disposed on the third rotating shaft seat, and a first circumferential limiting structure is disposed on the second rotating shaft seat. The second circumferential limiting structure and the first circumferential limiting structure are axially opposite to each other along the rotating shaft. This structure is simple and easy to operate. Simply moving the third rotating shaft seat towards the first rotating shaft seat will disengage the second circumferential limiting structure from the first circumferential limiting structure, unlocking the clamping plate. The rebound force of the elastic element will bring the third rotating shaft seat into contact with the second rotating shaft seat, locking the clamping plate.

[0013] Preferably, a second axial limiting structure is provided in the third rotating shaft seat, and a first axial limiting structure is provided in the first rotating shaft seat. The first and second axial limiting structures are opposite each other along the axial direction of the rotating shaft. The elastic element is disposed between the first and second axial limiting structures and sleeved on the rotating shaft. This structure facilitates the assembly of the elastic element and allows the elastic element to undergo axial deformation along the rotating shaft.

[0014] This utility model also provides a reading rack. The technical solution includes a tray with two adjustable book clips as described in any one of the claims. A base plate is connected to the tray, and the clips are located on the front side of the tray with clips on them. A bracket is provided on the rear side of the tray, and the bracket is rotatably connected to the tray to support the tray in standing upright.

[0015] Compared with the prior art, the reading rack of this utility model has the following advantages: the support can support the tray to stand up and adjust the tilt angle of the tray on the table, and the adjustable clamping thickness of the book clip set on the tray can adjust the clamping thickness according to the different thicknesses of books, so that the book clip has a higher adaptability to books of different thicknesses and clamps the pages more tightly.

[0016] Preferably, the tray has a slot into which the base plate is inserted. This structure is simple and facilitates the assembly of the adjustable-thickness book clip onto the tray. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the book clip with adjustable clamping thickness of this utility model.

[0018] Figure 2 This is an exploded view of Embodiment 1 of the adjustable-thickness book clip of this utility model.

[0019] Figure 3 This is another exploded view of Embodiment 1 of the book clip with adjustable clamping thickness of this utility model.

[0020] Figure 4 This is a front structural diagram of the reading rack of this utility model.

[0021] Figure 5 This is a side view of the reading rack of this utility model.

[0022] Figure 6 This is an exploded view of the reading rack of this utility model.

[0023] As shown in the figure: 1. Base plate, 1-1. First pivot seat, 1-2. First axial limiting structure, 1-3. Second pivot seat, 1-4. First circumferential limiting structure, 2. Clamping plate, 2-1. Third pivot seat, 2-2. Second axial limiting structure, 2-3. Second circumferential limiting structure, 3. Spring, 4. Pin, 5. Clamping piece, 6. Support plate, 6-1. Slot, 7. Bracket. Detailed Implementation

[0024] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0025] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0026] It should also be understood that the terms "comprising," "having," "including," and "containing," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. Furthermore, when expressions such as "...at least one" appear after a list of listed features, they modify the entire listed feature, not individual elements in the list.

[0027] Example 1

[0028] like Figures 1 to 3 As shown, the adjustable-thickness book clip of this utility model includes a base plate 1, a clamping plate 2, and a pin 4. The clamping plate 2 is rotatably connected to the base plate 1 via the pin 4. The pin 4 serves as a pivot for rotatably connecting the clamping plate 2 and the base plate 1. Specifically, the base plate 1 is provided with a first pivot seat 1-1 and a second pivot seat 1-3 that are spaced apart and opposite each other. The clamping plate 2 is provided with a third pivot seat 2-1. The third pivot seat 2-1 is connected between the first pivot seat 1-1 and the second pivot seat 1-3 via the pin 4. The third pivot seat 2-1 can slide axially along the pin 4 between the first pivot seat 1-1 and the second pivot seat 1-3.

[0029] The third pivot seat 2-1 is provided with a second axial limiting structure 2-2, and the first pivot seat 1-1 is provided with a first axial limiting structure 1-2. Both the first axial limiting structure 1-2 and the second axial limiting structure 2-2 are annular walls with shaft holes in the middle and are opposite to each other along the axial direction of the pin 4. A spring 3 is provided between the first axial limiting structure 1-2 and the second axial limiting structure 2-2. The spring 3 is fitted onto the pin 4 as an elastic element and can deform axially along the pin 4.

[0030] The third pivot seat 2-1 is provided with a second circumferential limiting structure 2-3, and the second pivot seat 1-3 is provided with a first circumferential limiting structure 1-4. The second circumferential limiting structure 2-3 and the first circumferential limiting structure 1-4 are axially opposite to each other along the axis of the pin 4. In the natural state, the spring 3 keeps the third pivot seat 2-1 and the first pivot seat 1-1 in a gap and in contact with the second pivot seat 1-3, that is, the second circumferential limiting structure 2-3 is in contact with the first circumferential limiting structure 1-4. In the compressed state, the third pivot seat 2-1 moves toward the first pivot seat 1-1 and disengages from the second pivot seat 1-3, that is, the second circumferential limiting structure 2-3 disengages from the first circumferential limiting structure 1-4. When the spring 3 rebounds, the third pivot seat 2-1 moves toward the second pivot seat 1-3 until the second circumferential limiting structure 2-3 contacts the first circumferential limiting structure 1-4 again.

[0031] The second circumferential limiting structure 2-3 is a protruding structure, consisting of several protrusions or protrusions evenly distributed in a ring. The first circumferential limiting structure 1-4 is a concave structure, consisting of several grooves evenly distributed in a ring. When the second circumferential limiting structure 2-3 contacts the first circumferential limiting structure 1-4, the protruding structure is inserted into the concave structure and circumferentially limited by the concave structure, locking the clamping plate 2 to the base plate 1 and preventing it from rotating. When the second circumferential limiting structure 2-3 disengages from the first circumferential limiting structure 1-4, the clamping plate 2 is unlocked and can rotate relative to the base plate 1. Any of the protrusions or protrusions can fit into any of the grooves. After the base plate 1 rotates, the protruding structure can still be inserted into the concave structure and circumferentially limited by the concave structure.

[0032] Example 2

[0033] The difference between the adjustable-thickness book clip in this embodiment and Embodiment 1 is that the raised structure consists of several protrusions or protrusions evenly distributed in a ring, while the concave structure is a recessed hole. The wall of the recessed hole protrudes from the end face of the second rotating shaft seat 1-3, and any one of the protrusions or protrusions can fit into the recessed hole. Thus, after the base plate 1 rotates, one of the protrusions or protrusions in the raised structure inserts into the recessed hole, locking the clamping plate 2.

[0034] Example 3

[0035] The difference between the adjustable clamping thickness book clip in this embodiment and embodiment 2 is that the end face of the second rotating shaft seat 1-3 where the groove hole is located is provided with an annular groove corresponding to the ring formed by the protrusions or protrusions. The groove hole is located in the annular groove, and the wall of the groove hole protrudes from the bottom of the annular groove. Thus, after the base plate 1 rotates, one of the protrusions or protrusions in the protrusion structure inserts into the groove hole, locking the clamping plate 2.

[0036] Example 4

[0037] The difference between the adjustable clamping thickness book clip in this embodiment and Embodiment 1 is that the raised structure is a protrusion or a protruding post, while the concave structure consists of several uniformly distributed grooves in a ring. Thus, after the base plate 1 rotates, the protrusion or protruding post inserts into one of the grooves in the concave structure, locking the clamping plate 2.

[0038] Example 5

[0039] The difference between the adjustable-thickness book clip in this embodiment and Embodiment 1 is that the protruding structure is a convex post with a regular polygonal cross-section, such as an equilateral triangle, square, regular pentagon, or regular hexagon, while the concave structure is a groove hole with a regular polygonal cross-section identical to that of the protruding structure. The protruding structure can fit into the concave structure with a clearance. Thus, after the base plate 1 rotates, the protruding post is inserted into the groove hole, locking the clamping plate 2.

[0040] Example 6

[0041] like Figures 4 to 6 As shown, the reading rack of this utility model includes a tray 6, on which two book clips with adjustable clamping thickness are provided as described in any one of Embodiments 1 to 5. Slots 6-1 are provided on both sides of the tray 6, and the base plate 1 is inserted into the slots 6-1. The clamping plate 2 is located on the front side of the tray 6, and clamping pieces 5 are provided on the clamping plate 2. A bracket 7 is provided on the rear side of the tray 6, and the bracket 7 is rotatably connected to the tray 6 to support the tray 6 to stand upright.

[0042] When using this reading rack, adjust the support 7, raise the tray 6, and then adjust the clamping thickness of the book clip according to the thickness of the book. The adjustment process includes sliding the clip 2 axially to compress the spring 3 until the second circumferential limiting structure 2-3 disengages from the first circumferential limiting structure 1-4, unlocking the clip 2, then rotating the clip 2, adjusting the angle between the clip 2 and the base plate 1 until the clamping thickness between the clip 2 and the base plate 1 adapts to the thickness of the current book, and then releasing the clip 2. The spring 3 rebounds, causing the second circumferential limiting structure 2-3 to contact the first circumferential limiting structure 1-4 again, and the clip 2 is locked by the base plate 1 again. At this point, the clamping thickness of the book clip is adjusted. The operation is convenient and allows the book clip to adapt to books of different thicknesses more effectively and clamp the pages more tightly.

[0043] The above are merely specific embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Any modifications or equivalent substitutions to this utility model without departing from its spirit and scope should be covered within the protection scope of the claims of this utility model.

Claims

1. A bookend for holding books of adjustable thickness, comprising: It includes a base plate (1), a clamping plate (2) and a rotating shaft. The clamping plate (2) is rotatably connected to the base plate (1) via the rotating shaft, and the clamping plate (2) can slide axially on the rotating shaft. An elastic element is provided between the clamping plate (2) and the base plate (1), and the elastic element can deform axially along the rotating shaft; a first circumferential limiting structure (1-4) is provided on the base plate (1), and a second circumferential limiting structure (2-3) is provided on the clamping plate (2). The first circumferential limiting structure (1-4) and the second circumferential limiting structure (2-3) contact each other to limit the clamping plate (2) circumferentially, so that the clamping plate (2) is locked by the base plate (1); the elastic element can make the second circumferential limiting structure (2-3) contact the first circumferential limiting structure (1-4) in its natural state, and the elastic element can make the second circumferential limiting structure (2-3) disengage from the first circumferential limiting structure (1-4) in its compressed state, so that the clamping plate (2) is unlocked and can rotate relative to the base plate (1).

2. The adjustable-thickness book clip according to claim 1, characterized in that, One of the second circumferential limiting structure (2-3) or the first circumferential limiting structure (1-4) is configured as a protruding structure, and the other is configured as a concave structure. When the second circumferential limiting structure (2-3) contacts the first circumferential limiting structure (1-4), the protruding structure can be inserted into the concave structure and circumferentially limited by the concave structure.

3. The adjustable-thickness book clip according to claim 2, characterized in that, The protruding structure consists of several protrusions or protrusions evenly distributed in a ring, and the concave structure consists of several grooves evenly distributed in a ring. As the base plate (1) rotates, any one of the protrusions or protrusions can fit into any one of the grooves.

4. The adjustable-thickness book clip according to claim 2, characterized in that, The protruding structure consists of several protrusions or protrusions evenly distributed in a ring, and the concave structure is a groove hole; the wall of the groove hole protrudes from the end face of the third rotating shaft seat (2-1) or the second rotating shaft seat (1-3); or, the end face of the third rotating shaft seat (2-1) or the second rotating shaft seat (1-3) where the groove hole is located is provided with an annular groove corresponding to the ring formed by the protrusions or protrusions, the groove hole is located in the annular groove, and the wall of the groove hole protrudes from the bottom of the annular groove; as the base plate (1) rotates, any one of the protrusions or protrusions can fit into the groove hole.

5. The adjustable-thickness book clip according to claim 2, characterized in that, The protruding structure is a protrusion or a protruding post, and the concave structure is a number of grooves evenly distributed in a ring. As the base plate (1) rotates, the protrusion or protruding post can fit into any one of the grooves.

6. The adjustable-thickness book clip according to claim 2, characterized in that, The protruding structure is a protruding post with a regular polygonal cross-section, and the concave structure is a groove hole with a regular polygonal cross-section. The protruding structure can be fitted into the concave structure with a clearance.

7. The adjustable-thickness book clip according to claim 1, characterized in that, One of the base plate (1) or the clamping plate (2) is provided with a first rotating shaft seat (1-1) and a second rotating shaft seat (1-3) that are spaced apart and opposite each other, and the other is provided with a third rotating shaft seat (2-1). The third rotating shaft seat (2-1) is connected between the first rotating shaft seat (1-1) and the second rotating shaft seat (1-3) through the rotating shaft. The elastic element is provided between the first rotating shaft seat (1-1) and the third rotating shaft seat (2-1), so that the third rotating shaft seat (2-1) is spaced apart from the first rotating shaft seat (1-1) and in contact with the second rotating shaft seat (1-3). The second circumferential limiting structure (2-3) is provided on the third rotating shaft seat (2-1), and the first circumferential limiting structure (1-4) is provided on the second rotating shaft seat (1-3). The second circumferential limiting structure (2-3) and the first circumferential limiting structure (1-4) are axially opposite each other along the rotating shaft.

8. The adjustable-thickness book clip according to claim 7, characterized in that, The third rotating shaft seat (2-1) is provided with a second axial limiting structure (2-2), and the first rotating shaft seat (1-1) is provided with a first axial limiting structure (1-2). The first axial limiting structure (1-2) and the second axial limiting structure (2-2) are opposite to each other along the axial direction of the rotating shaft. The elastic element is disposed between the first axial limiting structure (1-2) and the second axial limiting structure (2-2) and is sleeved on the rotating shaft.

9. A reading rack, characterized in that, Includes a tray (6), on which are provided two book clips with adjustable clamping thickness as described in any one of claims 1 to 8, a base plate (1) connected to the tray (6), a clamping plate (2) located on the front side of the tray (6), and a clamping piece (5) provided on the clamping plate (2); a bracket (7) is provided on the rear side of the tray (6), the bracket (7) being rotatably connected to the tray (6) for supporting the tray (6) to stand upright.

10. The reading rack according to claim 9, characterized in that, The tray (6) is provided with a slot (6-1), and the base plate (1) is inserted into the slot (6-1).

Images