Full-circle loose-leaf binding ring

Abstract

The utility model discloses a full-circle loose-leaf binding ring which comprises a pair of identical hinges, the hinges are provided with supporting columns, at least one semicircular binding ring is installed on the side face of each supporting column, a connecting block avoiding the semicircular binding rings is further arranged on the side face of each supporting column, and any one of the hinges is inverted. The connecting blocks of the pair of hinges are staggered to achieve clamping, and the connecting blocks are provided with rotating structures matched with each other to achieve rotating connection of the pair of hinges. The rotating shaft is simple in structure and convenient to install, and the rotating part is not prone to breakage.

Description

Technical Field

[0001] This utility model relates to the technical field of loose-leaf binding rings, and more particularly to a fully circular loose-leaf binding ring. Background Technology

[0002] When organizing loose documents, people usually use loose-leaf binding rings. After punching holes in the loose pages, the loose-leaf binding rings can bind the loose pages into a book through the holes. Loose-leaf binding rings on the market generally have a fixed spine, and the binding ring components are set in pairs on the spine for opening and closing operations. The above structure will result in a small opening angle and the device is prone to interference with the loose pages.

[0003] In the prior art, Chinese utility model patent publication number CN2443843Y provides a binding ring for manually binding loose-leaf documents, including a spine with multiple pairs of semi-circular ribs on both sides of the spine. The back of the spine has a wedge-shaped groove. By folding the spine along the wedge-shaped groove, the multiple pairs of semi-circular ribs can be opened and closed. Although this solves the technical problem of the small opening angle of most binding rings on the market, the above-mentioned design requires the bottom of the wedge-shaped groove to be very thin, and the binding ring is generally made of plastic, which leads to the problem of easy breakage. Therefore, a fully circular loose-leaf binding ring is needed to solve the above problems. Utility Model Content

[0004] To address the technical problem that the spine structure in the above-mentioned technologies is prone to breakage, this utility model provides a fully circular loose-leaf binding ring.

[0005] This utility model provides a circular loose-leaf binding ring, including a pair of identical hinges. Each hinge is provided with a support post, and at least one semi-circular binding ring is installed on the side of the support post. The side of the support post is also provided with a connecting block that avoids the semi-circular binding ring. Any one of the hinges in the pair is inverted, so that the connecting blocks of the pair of hinges interlock to achieve engagement. Each connecting block is provided with a mutually cooperating rotating structure to realize the rotational connection of the pair of hinges.

[0006] Preferably, the semicircular binding rings in a pair of hinges correspond one-to-one, and when the pair of hinges are closed, the corresponding semicircular binding rings on both sides form a complete circular binding ring.

[0007] Preferably, the rotating structure includes: a locking hole of the connecting block and a rotating connector of the connecting block. When the pair of hinges are engaged with each other through their connecting blocks, the rotating connector abuts against the locking hole to achieve a rotating connection between the pair of hinges.

[0008] Preferably, the rotating connector is hemispherical, and the locking hole is a hemispherical hole that matches the shape of the hemispherical rotating connector, with the hemispherical rotating connector and the hemispherical hole having an interference fit.

[0009] Preferably, the end of the semicircular binding ring is provided with wedge-shaped teeth, and the wedge-shaped teeth at the ends of the semicircular binding rings on the pair of hinges are inverted to cooperate with each other.

[0010] Preferably, the ends of a set of semicircular binding rings constituting the full circular binding ring are provided with interlocking hook-shaped locking teeth.

[0011] The beneficial effects of this utility model are as follows: Compared with the prior art, the circular loose-leaf binding ring provided by this utility model has a support column designed on the hinge, and a pair of hinges are connected by a connecting block set on the support column. This structure makes the spine more stable, less prone to breakage, and the opening angle is not limited by the spine. Attached Figure Description

[0012] Figure 1 This is a perspective view of the opened state of this utility model.

[0013] Figure 2 This is a three-dimensional view of the closed state of this utility model.

[0014] Figure 3 This is a perspective view of any hinge of this utility model.

[0015] Figure 4 This is an exploded view of the present invention.

[0016] The symbols for the main components are explained below:

[0017] Hinge 1; Support column 11; Connecting block 12; Locking hole 121; Rotating connector 122;

[0018] Semicircular binding ring 13; wedge-shaped teeth 131; hook-shaped locking teeth 132. Detailed Implementation

[0019] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings, will provide a further picture.

[0020] Please see Figure 1-4This utility model provides a circular loose-leaf binding ring, comprising a pair of identical hinges 1. Each hinge 1 is provided with a support post 11, and at least one semi-circular binding ring 13 is mounted on the side of the support post. A connecting block 12, avoiding the semi-circular binding ring 13, is also provided on the side of the support post 11. Either hinge 1 in the pair is inverted, causing the connecting blocks 12 of the pair of hinges 1 to interlock and achieve engagement. Each connecting block 12 is provided with a cooperating transmission structure to achieve a rotational connection between the pair of hinges 1. The loose-leaf binding ring provided by this utility model achieves a rotational connection between the two hinges through a connecting member, resulting in a stable structure that is not easily broken. Furthermore, the two support posts cooperate with each other, allowing for a larger opening angle compared to other binding rings with an integrated spine design. Simultaneously, the two hinges have identical shapes, allowing for perfect assembly simply by inverting either hinge. Therefore, the left and right hinges are not distinguished during the entire manufacturing process, simplifying production design.

[0021] Please see Figure 2 In this embodiment, the semi-circular binding rings 13 in a pair of hinges 1 correspond one-to-one. When the pair of hinges 1 are closed, the corresponding semi-circular binding rings 13 on both sides form a complete circular binding ring. The complete circular binding ring has no extra parts, making it convenient to insert loose-leaf pages, and it will not get tangled with other items during carrying.

[0022] Please see Figure 3 and Figure 4 The rotating structure includes: locking holes 121 at both ends of the connecting block 12 and rotating connecting parts 122 at both ends of the connecting block 12. When a pair of hinges 1 are engaged with each other through their connecting blocks 12, the rotating connecting parts 122 abut against the locking holes 121 to achieve a rotatable connection between the pair of hinges 1. In this utility model, the rotating shaft commonly used in binding rings in the prior art is eliminated. During assembly, the rotating connecting parts 122 are engaged into the corresponding locking holes 12 to achieve a rotatable connection between the two hinges 1, and the rotating connecting parts 122 can rotate within the locking holes 121 to open and close the binding ring. This design eliminates the need for a rotating shaft, reduces the difficulty of assembling loose-leaf binding rings, and reduces labor costs in production.

[0023] In this application, the rotating connector 122 is hemispherical, and the locking hole 121 is a hemispherical hole that matches the shape of the hemispherical rotating connector 122. The hemispherical rotating connector 122 and the hemispherical hole are interference fit. The spherical rotating connector 122 is easier to lock into the locking hole 121 than cylindrical or other strip-shaped structures, thus facilitating assembly. Secondly, the contact surface with the locking hole 121 is a spherical surface with a low coefficient of friction, which makes the rotation of the rotating connector 122 within the locking hole 121 smoother, thereby making the opening and closing of the loose-leaf binding ring 13 more convenient.

[0024] Please see Figure 3 and Figure 4The end of the semicircular binding ring 13 is provided with wedge-shaped teeth. The wedge-shaped teeth 131 at the ends of the semicircular binding rings 13 on a pair of hinges 1 are inverted to cooperate with each other. When the two semicircular binding rings 13 are closed, the wedge-shaped teeth 131 at the ends of the semicircular binding rings 13 on the hinges 1 engage with each other, increasing the contact area and enhancing the stability in the closed state. Among them, the ends of a certain group of semicircular binding rings 13 that constitute a complete circular binding ring are provided with hook-shaped locking teeth 132 that cooperate with each other. When the loose-leaf binding ring is closed, the hook-shaped locking teeth 132 hook each other to maintain the stability of the closed state.

[0025] The advantages of this utility model are:

[0026] 1) The rotating connection part of this utility model has a stable structure, is not easy to break, and increases the service life of the product.

[0027] 2) By setting hook-shaped locking teeth, this utility model can better maintain the closed state of the device.

[0028] 3) The rotating connector is hemispherical, which makes the rotation smoother.

[0029] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A circular loose-leaf binding ring, characterized in that, The device includes a pair of identical hinges, each hinge having a support post. At least one semi-circular binding ring is mounted on the side of the support post, and a connecting block that avoids the semi-circular binding ring is also provided on the side of the support post. Either hinge in the pair is inverted, causing the connecting blocks of the pair of hinges to interlock and engage. Each connecting block is provided with a mutually cooperating rotating structure to achieve a rotating connection between the pair of hinges.

2. The circular loose-leaf binding ring according to claim 1, characterized in that, The semicircular binding rings in a pair of hinges correspond one-to-one. When the pair of hinges are closed, the corresponding semicircular binding rings on both sides form a complete circular binding ring.

3. The circular loose-leaf binding ring according to claim 1, characterized in that, The rotating structure includes: locking holes at both ends of the connecting block and rotating connecting parts at both ends of the connecting block. When the pair of hinges are engaged with each other through their connecting blocks, the rotating connecting parts abut against the locking holes to achieve a rotating connection between the pair of hinges.

4. A circular loose-leaf binding ring according to claim 3, characterized in that, The rotating connector is hemispherical, and the locking hole is a hemispherical hole that matches the shape of the hemispherical rotating connector. The hemispherical rotating connector and the hemispherical hole are interference-fitted.

5. A circular loose-leaf binding ring according to claim 2, characterized in that, The end of the semicircular binding ring is provided with wedge-shaped teeth, and the wedge-shaped teeth at the ends of the semicircular binding rings on the pair of hinges are inverted to cooperate with each other.

6. A circular loose-leaf binding ring according to claim 2, characterized in that, The ends of a semi-circular binding ring that makes up the full circular binding ring are provided with interlocking hook-shaped locking teeth.

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