A binding coil

Abstract

The application discloses a binding coil, aiming at the problem that the two ends of the coil are not easy to be aligned in the repeated deformation process of the existing coil, and further affecting the page turning. Technical scheme points are as follows: the binding coil comprises a base plate, a plurality of arc-shaped pieces rotationally connected with the base plate, and an insert piece rotationally connected with the arc-shaped piece away from the base plate, a gap for installing a page is formed between the two ends of the arc-shaped piece, a positioning hole is formed in the insert piece, a positioning block is fixedly connected with the base plate and is matched with the positioning hole, and the insert piece closes the gap when the base plate is connected with the insert piece. The positioning block and the positioning hole are arranged, the separation of the insert piece and the base plate during the page turning is avoided, the misalignment of the insert piece and the base plate is also avoided, and the normal page turning is ensured.

Description

Technical Field

[0001] This invention relates to the field of coil technology, and more specifically, to a binding coil. Background Technology

[0002] Currently, binding coils are commonly used in document binding. The process involves punching holes in the pages to be bound one by one, and then inserting them into pre-made binding coils. The biggest advantages of coil binding are: smooth text turning, easy addition and removal of pages, and low material costs, making it the most widely used form of document binding globally.

[0003] To facilitate the replacement of pages within the coil, most existing binding coils have openings on individual coils. The openings are closed or opened by controlling the deformation of the coil, thus allowing for the replacement of pages. However, during the repeated deformation of the coil, the two ends of the coil may become misaligned, which in turn affects the reading of the pages.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a binding coil to solve the technical problems mentioned in the background.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a binding coil, comprising a substrate, a plurality of arc-shaped pieces rotatably connected to the substrate, and an insert piece rotatably connected to one end of the arc-shaped pieces away from the substrate, wherein a gap for mounting the document pages is formed between the two ends of the arc-shaped pieces, and a positioning hole is provided on the insert piece, and a positioning block that engages with the positioning hole is fixedly connected to the substrate, wherein the insert piece closes the gap when the substrate is connected to the insert piece.

[0007] The present invention is further configured such that: a plurality of limiting blocks are fixedly connected to the substrate, and a limiting groove for inserting a piece is formed between two adjacent limiting blocks.

[0008] The present invention is further configured such that: a connecting portion is integrally formed on the side of the substrate away from the positioning block; a connecting groove is formed on the surface of the arc-shaped piece to engage with the connecting portion; a moving groove is formed on the insert for the positioning block to move and to communicate with the positioning hole; and a limiting component is provided between the moving groove and the positioning block to prevent them from separating.

[0009] The present invention is further configured such that: the limiting component includes two limiting pieces fixedly connected to the inner wall of the moving groove and sliding grooves formed on both sides of the positioning block for the limiting pieces to slide.

[0010] The present invention is further configured such that: two elastic blocks are fixedly connected to the inner wall of the connecting groove, and a positioning groove is provided on the side wall of the connecting part for the two elastic blocks to be inserted.

[0011] The present invention is further configured such that the end of the elastic block away from the connecting groove is arc-shaped.

[0012] The invention is further configured such that: the two sides of the arc-shaped piece converge toward the concave side to form a groove, and a support rod is fixedly connected in the groove.

[0013] The present invention is further configured such that the arc-shaped sheet has elastic deformation capability.

[0014] In summary, the present invention has the following beneficial effects:

[0015] By using positioning blocks and positioning holes, it is possible to prevent the insert from separating from the substrate when turning pages, and also to prevent the insert from misaligning with the substrate, thus ensuring normal page turning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0018] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 4 for Figure 3 Enlarged view of point B in the image;

[0020] Figure 5 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0021] Figure 6 for Figure 5 Enlarged view of point C in the image.

[0022] In the figure: 1. Substrate; 2. Arc-shaped piece; 3. Insert piece; 4. Support rod; 5. Positioning hole; 6. Positioning block; 7. Limiting block; 8. Limiting groove; 9. Connecting part; 10. Connecting groove; 11. Moving groove; 12. Limiting piece; 13. Sliding groove; 14. Elastic block; 15. Positioning groove; 16. Groove. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0024] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] A binding coil, such as Figures 1-6 As shown, it includes a substrate 1, several arc-shaped pieces 2 rotatably connected to the substrate 1, and an insert 3 rotatably connected to one end of the arc-shaped pieces 2 away from the substrate 1. A gap for mounting the document is formed between the two ends of the arc-shaped pieces 2. A positioning hole 5 is provided on the insert 3. A positioning block 6 that engages with the positioning hole 5 is fixedly connected to the substrate 1. When the substrate 1 is connected to the insert 3, the insert 3 closes the gap.

[0027] A number of limiting blocks 7 are fixedly connected to the substrate 1. A limiting groove 8 for inserting the insert 3 is formed between two adjacent limiting blocks 7. The position of the insert 3 is limited by the setting of the limiting blocks 7 to prevent the position of the insert 3 from shifting during use.

[0028] The substrate 1 has a connecting part 9 integrally formed on the side away from the positioning block 6. The surface of the arc-shaped piece 2 is provided with a connecting groove 10 that engages with the connecting part 9. The insert 3 is provided with a moving groove 11 that allows the positioning block 6 to move and communicates with the positioning hole 5. A limiting component is provided between the moving groove 11 and the positioning block 6 to prevent them from separating. When the insert 3 is connected to the substrate 1, the substrate 1 and the arc-shaped piece 2 are rotatably connected, so the substrate 1 and the insert 3 can be rotated. Since the insert 3 is provided with a moving groove 11 that allows the positioning block 6 to move, the positioning block 6 on the substrate 1 will move along the moving groove 11 during the rotation of the substrate 1. The limiting component can prevent the substrate 1 and the insert 3 from separating. When the substrate 1 is rotated to the point where the connecting part 9 engages with the connecting groove 10, the substrate 1 and the insert 3 can be fixed on the arc-shaped piece 2, reducing the overall space occupied and making it easier to flip through the pages.

[0029] The limiting component includes two limiting pieces 12 fixedly connected to the inner wall of the moving groove 11 and sliding grooves 13 opened on both sides of the positioning block 6 for the limiting pieces 12 to slide. When the positioning block 6 and the positioning hole 5 are engaged with each other and the base plate 1 is rotated, the positioning hole 5 and the moving groove 11 are interconnected, so the positioning block 6 will slide into the moving groove 11. At this time, the limiting pieces 12 will be engaged into the sliding groove 13. This will prevent the positioning block 6 from moving along the moving groove 11 while also preventing the two from separating during the movement.

[0030] Two elastic blocks 14 are fixedly connected to the inner wall of the connecting groove 10. The side wall of the connecting part 9 is provided with a positioning groove 15 for the two elastic blocks 14 to be inserted. During the process of the base plate 1 rotating to engage with the connecting groove 10, the base plate 1 will abut against the elastic blocks 14, thereby forcing the elastic blocks 14 to undergo elastic deformation and contraction. When the position of the elastic blocks 14 corresponds to the position of the positioning groove 15, the elastic blocks 14 will return to their original shape and be inserted into the positioning groove 15, thereby improving the firmness of the connection between the connecting part 9 and the connecting groove 10. The end of the elastic block 14 away from the connecting groove 10 is arc-shaped, which makes it easier for the elastic block 14 to undergo elastic deformation under pressure, thereby making it easier to connect and separate the elastic blocks 14 from the positioning groove 15.

[0031] The two sides of the arc-shaped piece 2 converge toward the concave side to form a groove 16. A support rod 4 is fixedly connected in the groove 16 to improve the structural strength of the arc-shaped piece 2, thereby increasing its service life. Since the two sides of the arc-shaped piece 2 converge toward the concave side, a protrusion is formed on the convex side of the arc-shaped piece 2, which makes it easier for the pages to rotate on the arc-shaped piece 2. The arc-shaped piece 2 has elastic deformation capability, which makes it easy to control the size of the gap, thus facilitating the disassembly and assembly of the pages.

[0032] The present invention is used normally as follows:

[0033] Insert the pages one by one along the arc-shaped piece 2, then rotate the insert 3 so that the positioning holes 5 on the insert 3 correspond one by one with the positioning blocks 6 on the substrate 1, thereby connecting the insert 3 and the substrate 1. At this time, the insert 3 closes the gap to prevent the pages from falling off. At the same time, the positioning blocks 6 and positioning holes 5 can prevent the insert 3 from separating from the substrate 1 when turning the pages, and can also prevent the insert 3 from being misaligned with the substrate 1, ensuring normal page turning. After the insert 3 is connected to the substrate 1, rotating the substrate 1 will cause the insert 3 to rotate together, so that the connecting part 9 on the substrate 1 and the connecting groove 10 on the arc-shaped piece 2 can engage with each other, which can reduce the overall space occupied and make it easier to place. When it is necessary to replace the pages, rotate the substrate 1 to separate the substrate 1 from the arc-shaped piece 2, and then pull the insert 3 away from the substrate 1 to separate the insert 3 from the substrate 1. Then the corresponding pages can be replaced.

[0034] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A binding coil, characterized in that: The device includes a substrate (1), several arc-shaped pieces (2) rotatably connected to the substrate (1), and an insert (3) rotatably connected to one end of the arc-shaped pieces (2) away from the substrate (1). A gap for mounting the document is formed between the two ends of the arc-shaped pieces (2). A positioning hole (5) is provided on the insert (3). A positioning block (6) that engages with the positioning hole (5) is fixedly connected to the substrate (1). When the substrate (1) is connected to the insert (3), the insert (3) closes the gap. A plurality of limiting blocks (7) are fixedly connected to the substrate (1), and a limiting groove (8) for inserting the insert (3) is formed between two adjacent limiting blocks (7). The substrate (1) has a connecting part (9) integrally formed on the side away from the positioning block (6). The surface of the arc-shaped piece (2) is provided with a connecting groove (10) that engages with the connecting part (9). The insert (3) is provided with a moving groove (11) that allows the positioning block (6) to move and communicates with the positioning hole (5). A limiting component is provided between the moving groove (11) and the positioning block (6) to prevent them from separating.

2. A binding coil according to claim 1, characterized in that: The limiting component includes two limiting pieces (12) fixedly connected to the inner wall of the moving groove (11) and sliding grooves (13) opened on both sides of the positioning block (6) for the limiting pieces (12) to slide.

3. A binding coil according to claim 1, characterized in that: Two elastic blocks (14) are fixedly connected to the inner wall of the connecting groove (10), and a positioning groove (15) is provided on the side wall of the connecting part (9) for the two elastic blocks (14) to be inserted.

4. A binding coil according to claim 3, characterized in that: The end of the elastic block (14) away from the connecting groove (10) is arranged in an arc shape.

5. A binding coil according to claim 1, characterized in that: The two sides of the arc-shaped piece (2) converge toward the concave side to form a groove (16), and a support rod (4) is fixedly connected in the groove (16).

6. A binding coil according to claim 1, characterized in that: The arc-shaped piece (2) has elastic deformation capability.

Images