Loose-leaf binder

Abstract

The invention belongs to the technical field of loose-leaf binders, and discloses a loose-leaf binder. The loose-leaf binder comprises a fixing base and a coil clamping ring, the fixing base is used for being fixedly installed with a to-be-fixed part, the coil clamping ring comprises a plurality of clamping ring bodies connected with the fixing base in a switching mode, and the clamping ring bodies are detachably connected to the fixing base and can be combined with the fixing base to form an annular structure. Compared with an existing loose-leaf binder, the loose-leaf binder is simpler in structure and more convenient to use due to the fact that the loose-leaf binder is mainly composed of the fixed base and the coil clamping ring. Besides, due to the design of the coil clamping ring, the coil clamping ring is easy to disassemble and reinstall, when the coil clamping ring is damaged, a user only needs to disassemble the coil clamping ring from the fixed base and replace the coil clamping ring with a new coil clamping ring, the loose-leaf binder can be continuously used, the whole loose-leaf binder does not need to be replaced, and therefore the production cost, the use cost and the maintenance cost are greatly reduced. The loose-leaf binder is higher in economic applicability and more worthy of being widely popularized and used.

Description

Technical Field

[0001] The invention relates to the technical field of leaf binders, and in particular to a leaf binder. Background Art

[0002] A binder is a kind of stationery commonly used in daily life to fix and organize paper documents. Currently available binders include a fixed ring buckle that can be opened and closed, and the paper can be removed or torn off the fixed ring buckle. When the binder is in use, in order to firmly fix the paper on the fixed ring buckle, it is necessary to realize that the fixed ring buckle can be opened and closed freely. While achieving the above functions, the existing binder also has at least the following disadvantages: (1) It is difficult to install the binder on the cover; (2) The structure is relatively complex and uses many parts, resulting in high production costs and cumbersome and inconvenient use.

[0003] In order to solve the above problems, the prior art discloses a simple binder, which includes a long strip and several pairs of opposite left and right rings distributed on both sides of the long strip. The long strip can be conveniently fixed on the cover, and the binder has a simple structure, thereby reducing production costs and difficulty in use. However, when parts in the simple binder are damaged, the entire simple binder needs to be replaced, so the cost of use is still high.

[0004] Based on this, it is necessary to design a binder to solve the problems existing in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a loose-leaf binder which can further improve economic applicability and further reduce the use cost while ensuring convenience and reliability in use.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A binder comprises a fixed base and a coil clamp, wherein the fixed base is used for fixed installation with a part to be fixed, and the coil clamp comprises a plurality of clamp bodies which are transfer-connected with the fixed base, and the clamp bodies are detachably connected to the fixed base and can be combined with the fixed base to form an annular structure.

[0008] Preferably, an insertion groove is provided on the edge of the fixed base; the coil clamping ring includes a pivot, which is connected to the plurality of clamping ring bodies and is rotatably inserted in the insertion groove to drive the plurality of clamping ring bodies to rotate around the axis of the fixed base.

[0009] Preferably, the insertion groove is located on one side of the fixed base, the cross-section of the snap ring body is arched, and when the pivot drives the snap ring body to rotate, the end of the snap ring body away from the pivot can abut and lock with the other side of the fixed base.

[0010] Preferably, a protrusion is provided on one end of the snap ring body away from the pivot, and a slot is provided on the other side of the fixed base, and the protrusion can be snapped into the slot to achieve locking of the snap ring body and the fixed base.

[0011] Preferably, the raised portion is located on the side surface of the snap ring body at one end away from the pivot, and an arc-shaped contact surface is protruding downward at the junction of the side wall of the slot and the bottom of the fixed base. When the snap ring body and the fixed base are in a locked state, the raised portion is crimped onto the arc-shaped contact surface in the vertical direction.

[0012] Preferably, linear fitting portions are respectively provided on opposite sides of the pivot, and when the clamping ring body and the fixed base are in a locked state, the linear fitting portions are tightly attached to the inner side wall of the plug-in slot.

[0013] Preferably, one side edge of the fixed base is extended downward, and a plurality of avoidance grooves are spaced apart along the axial direction of one side of the fixed base, the portion between adjacent avoidance grooves is defined to form a claw, and a limiting wall plate opposite to the claw is provided at the bottom of the fixed base, the space between the claw and the limiting wall plate is defined as the plug-in groove, and when the pivot is inserted in the plug-in groove, the clamping ring body can be movably accommodated in the avoidance groove.

[0014] Preferably, a reinforcing rib plate in a cross shape is protruding from the bottom of the fixed base.

[0015] Preferably, the reinforcing rib plate includes a first protruding plate and a second protruding plate, the first protruding plate is extended along the axial direction of the fixed base, the second protruding plate is horizontally perpendicular to the first protruding plate, and the second protruding plate is arranged between adjacent limiting wall plates, and the second protruding plate is provided with a buckling guide groove on the side facing the avoidance groove, and the buckling guide groove is used to cooperate with the arc surface of the pivot.

[0016] Preferably, a countersunk hole is provided on the fixing base, and the fixing base is riveted to the part to be fixed by a riveting piece passing through the countersunk hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a binder, which is mainly composed of a fixed base and a coil clamp. Compared with the existing binder, the structure is simpler and the use is more convenient. In addition, the design of the coil clamp makes it easy to disassemble and reinstall. When the coil clamp is damaged, the user only needs to remove the coil clamp from the fixed base and replace it with a new coil clamp to continue using it without replacing the entire binder, thereby greatly reducing the production, use and maintenance costs and having higher economic applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a fixed base and a coil clamp in a binder provided by an embodiment of the present invention in a locked state;

[0020] Figure 2 It is a schematic structural diagram of a fixed base and a coil clamp in a binder provided by an embodiment of the present invention in an unfolded state;

[0021] Figure 3 is a bottom view of a fixed base provided by an embodiment of the present invention;

[0022] Figure 4 is a bottom view of a binder provided by an embodiment of the present invention;

[0023] Figure 5 is along Figure 4 Schematic diagram of the cross section at AA in the middle;

[0024] Figure 6 is a schematic structural diagram of a coil clamp provided in an embodiment of the present invention;

[0025] Figure 7 is along Figure 4 Schematic diagram of the cross section at the middle BB;

[0026] Figure 8 It is a schematic diagram of the connection between the arc-shaped contact surface and the raised portion provided in an embodiment of the present invention.

[0027] In the figure:

[0028] 1. Fixed base; 11. Countersunk hole; 12. Insertion slot; 13. Avoidance slot; 14. Clamping claw; 15. Limiting wall plate; 16. Reinforcement rib plate; 161. First protruding plate; 162. Second protruding plate; 1621. Buckle guide groove; 17. Clamping slot; 18. Arc contact surface;

[0029] 2. Coil clamp; 21. Clamp body; 211. Protrusion; 22. Pivot; 221. Straight fitting portion. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] This embodiment provides a binder, such as Figures 1 to 8 As shown, it includes a fixed base 1 and a coil clamp 2, wherein the coil clamp 2 includes a plurality of clamp bodies 21 which are transfer-connected to the fixed base 1. Exemplarily, this embodiment is provided with four clamp bodies 21, and the clamp bodies 21 are detachably connected to the fixed base 1, so that when the coil clamp 2 and the fixed base 1 are in a locked state, the clamp bodies 21 can be combined with the fixed base 1 to form an annular structure, and the combined annular structure can fix together a number of loose-leaf pages or papers to be sorted and summarized.

[0035] When the device is in use, the binder can be fixedly connected to the required fixed position of the cover through the fixed base 1, and then the corresponding loose-leaf paper is inserted into the corresponding clamping ring body 21 along the insertion hole on the paper, and then the coil clamping ring 2 is manually rotated to a locked state, so that the clamping ring body 21 can be combined with the fixed base 1 to form a closed annular structure, thereby ensuring that the loose-leaf paper is stably installed on the cover and preventing the loose-leaf paper from being separated from the coil clamping ring 2. Since the device is mainly composed of the fixed base 1 and the coil clamping ring 2, compared with the existing binder, the structure is simpler and the use is more convenient. In addition, the design of the coil clamping ring 2 makes it easy to disassemble and reinstall. When the coil clamping ring 2 is damaged, the user only needs to remove the coil clamping ring 2 from the fixed base 1 and replace it with a new coil clamping ring 2 to continue using it, without replacing the entire binder, thereby greatly reducing the production, use and maintenance costs. The economic applicability of the binder is higher and it is more worthy of widespread promotion and use.

[0036] Specifically, in this embodiment, refer to Figure 2 , Figure 3 As shown, the horizontal cross-section of the fixed base 1 is rectangular, and a countersunk hole 11 is provided at both ends of the fixed base 1, so that the fixed base 1 can be riveted and fixed to the cover by a riveting member, such as a rivet, passing through the countersunk hole 11, thereby ensuring a tight connection, so that the binder can be better fixed on the cover.

[0037] refer to Figure 3 , Figure 4 As shown, a plug-in groove 12 is also provided on the side edge of the fixed base 1; the coil clamping ring 2 also includes a pivot 22, which is connected to one end of a plurality of clamping ring bodies 21 and is rotatably inserted into the plug-in groove 12, so as to drive the plurality of clamping ring bodies 21 to rotate around the axis of the fixed base 1 through the pivot 22, thereby realizing the expansion and contraction of the coil clamping ring 2.

[0038] Further, refer to Figure 3 As shown, the opening direction of the plug-in slot 12 is set downward. One implementation of this embodiment is that one side edge of the fixed base 1 is extended downward, and a plurality of avoidance slots 13 are arranged at intervals on one side of the fixed base 1 along its axial direction. The portion of the fixed base 1 located between adjacent avoidance slots 13 is defined to form a claw 14, and a limiting wall plate 15 arranged opposite to the claw 14 is provided at the bottom of the fixed base 1. The space between the claw 14 and the limiting wall plate 15 is defined as the above-mentioned plug-in slot 12, thereby obtaining the plug-in slot 12 with the opening direction downward; in addition, when the pivot 22 is inserted into the plug-in slot 12, the snap ring body 21 can be movably accommodated in the avoidance slot 13 to ensure that the fixed base 1 will not interfere with the rotation of the snap ring body 21 during the process of the pivot 22 driving the snap ring body 21 to rotate.

[0039] Through the above arrangement, the open end of the insertion slot 12 can be closely attached to the cover, thus being away from the loose-leaf paper, so that the portion where the fixed base 1 and the loose-leaf paper are in contact with each other remains smooth, thereby preventing the loose-leaf paper from being scratched or worn due to friction with the insertion slot 12 during insertion, removal or flipping. Moreover, through the protection of the claw 14, the direct impact of the external environment on the pivot 22 can also be avoided, thereby ensuring the stability of the pivot 22 in the insertion slot 12 and extending the service life of the binder.

[0040] Furthermore, combined with Figure 4 , Figure 5 and Figure 6 As shown, linear fitting portions 221 are respectively provided on opposite sides of the pivot 22. When the pivot 22 is rotated until the snap ring body 21 and the fixed base 1 are in a locked state, the linear fitting portion 221 can be tightly attached to the inner wall of the insertion slot 12, which requires the pivot 22 to overcome greater resistance when rotating, thereby making the rotation of the pivot 22 more difficult, effectively limiting the freedom of rotation of the pivot 22, further enhancing the locking stability between the snap ring body 21 and the fixed base 1, and effectively preventing the snap ring body 21 from accidentally loosening when flipping the loose-leaf paper.

[0041] Preferably, the fixed base 1 provided in this embodiment is manufactured entirely of plastic material, with low processing cost and molding difficulty. The fixed base 1 having a shape that meets the requirements of the actual working conditions can be processed by injection molding, and it is light in weight and easy to carry and use. In addition, since the fixed base 1 has good elastic properties, when the pivot 22 rotates, the claw 14 and the limiting wall plate 15 can provide a suitable rotation space for the pivot 22 by generating a certain degree of elastic deformation, thereby ensuring that the pivot 22 will not be obstructed by the rigid interference of the claw 14 and the limiting wall plate 15 during the rotation process.

[0042] Optionally, the fixed base 1 provided in this embodiment is provided with a cross-shaped reinforcing rib plate 16 protruding from the bottom, so that the structural strength of the fixed base 1 is higher and less likely to deform, ensuring that the fixed base 1 can maintain good durability and stability during frequent use, which is conducive to extending the service life of the binder. Specifically, the reinforcing rib plate 16 includes a first protruding plate 161 and a second protruding plate 162, wherein the first protruding plate 161 is extended along the axis direction of the fixed base 1, and in this embodiment, the two ends of the first protruding plate 161 abut against the outer wall of the countersunk hole 11; the second protruding plate 162 is distributed along the axis of the fixed base 1, and is horizontally perpendicular to the first protruding plate 161, so that the second protruding plate 162 can strengthen the structural strength of the fixed base 1 at the position of the avoidance groove 13.

[0043] It should be noted that, since the claws 14 are spaced apart along the axial direction of the fixed base 1, the corresponding plurality of limiting wall plates 15 are also spaced apart at the bottom of the fixed base 1. Figure 6 As shown, a plurality of linear fitting portions 221 are arranged at intervals on the pivot 22, so that each linear fitting portion 221 can cooperate with each pair of limiting wall plates 15 and claws 14, and at the same time, the portion of the pivot 22 that is arranged opposite to the avoidance groove 13 still maintains the original circular cross-sectional structural characteristics; in addition, referring to Figure 7 As shown, a buckling guide groove 1621 is provided on the side of the second protruding plate 162 facing the avoidance groove 13, and the buckling guide groove 1621 is used to cooperate with the arc surface of the pivot 22. When the pivot 22 rotates, the buckling guide groove 1621 can provide a precise guiding and limiting effect for the pivot 22, so that the pivot 22 can be locked in the buckling guide groove 1621 and rotated without offset and misalignment, thereby enhancing the connection stability between the pivot 22 and the fixed base 1.

[0044] The following is a detailed description of how to fix the loose-leaf pages on the cover by means of the clamp body 21. Preferably, in this embodiment, one side of the fixed base 1 is provided with the above-mentioned insertion groove 12; the cross section of the clamp body 21 is arched, and when the pivot 22 drives the clamp body 21 to rotate, the end of the clamp body 21 away from the pivot 22 can abut and lock with the other side of the fixed base 1, so that the clamp body 21 and the fixed base 1 form a firmly connected annular structure, thereby achieving the purpose of being able to fix the loose-leaf pages on the cover.

[0045] Compared with the prior art, this fixing method optimizes the structure of the clamp body 21. The clamp body 21 is upgraded from two arc-shaped rings combined together to an integrally formed arched structure, which enhances the overall rigidity and durability and makes the structure of the clamp body 21 simpler. During production and manufacturing, the pivot 22 can be formed synchronously with the clamp body 21 in an integrally formed manner, so that the entire binder only includes two components, namely, the fixed base 1 and the coil clamp 2, thereby further reducing the number of parts and further simplifying the assembly process, thereby further improving production efficiency, making the binder lower in molding cost, more convenient and quick to use, and also ensuring a good fixing effect on loose-leaf paper.

[0046] In order to ensure the connection stability between the clamp body 21 and the fixed base 1, as shown in FIG. Figure 6As shown, a protrusion 211 is provided on one end of the snap ring body 21 away from the pivot 22. In this embodiment, the protrusion 211 is preferably a hemispherical structure; a slot 17 is provided at a corresponding position on the other side of the fixed base 1. The snap ring body 21 is locked in the slot 17 to achieve a locking connection between the snap ring body 21 and the fixed base 1. The snap ring body 21 and the fixed base 1 are locked by the snap connection, which not only ensures the structural stability, but also reduces the difficulty of unfolding the snap ring body 21. When the user unfolds the snap ring body 21, the locking state between the snap ring body 21 and the fixed base 1 can be released with a slight force, thereby ensuring the user experience.

[0047] More preferably, reference Figure 7 , Figure 8 As shown, the protrusion 211 is located on the side surface of the end of the snap ring body 21 away from the pivot 22, and the intersection of the side wall of the clamping groove 17 and the bottom of the fixed base 1 is provided with an arc-shaped contact surface 18 protruding downward. When the user operates the snap ring body 21 to rotate, the other end of the snap ring body 21 moves toward the direction close to the clamping groove 17, and presses the snap ring body 21 to a position where the protrusion 211 can fit tightly on the arc-shaped contact surface 18, so that the protrusion 211 can be pressed on the arc-shaped contact surface 18 in the vertical direction. Through the above arrangement, a stable connection between the snap ring body 21 and the fixed base 1 is achieved, and when the locking relationship between the snap ring body 21 and the fixed base 1 needs to be released, the user only needs to gently lift the snap ring body 21 upward to separate the protrusion 211 from the arc-shaped contact surface 18, and the unlocking can be easily achieved, ensuring simple and efficient operation.

[0048] It should be supplemented that the clamping grooves 17 on the fixed base 1 are arranged opposite to the avoidance grooves 13 one by one, and the second protruding plate 162 opposite to the avoidance grooves 13 can be extended to connect with the arc-shaped contact surface 18, so as to improve the structural strength of the portion of the fixed base 1 at the arc-shaped contact surface 18, and reduce the risk of deformation of the fixed base 1 due to the force applied by the clamping ring body 21 to the arc-shaped contact surface 18. In addition, in this embodiment, a second protruding plate 162 is also arranged between the portion between adjacent clamping grooves 17 on the fixed base 1 and the first protruding plate 161, so as to strengthen the structural strength of the portion between adjacent clamping grooves 17 on the fixed base 1, thereby further enhancing the overall structural stability of the fixed base 1.

[0049] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A loose-leaf folder, characterized in that: The invention comprises a fixed base (1) and a coil clamping ring (2), wherein the fixed base (1) is used for fixed installation with a part to be fixed, and the coil clamping ring (2) comprises a plurality of clamping ring bodies (21) which are transfer-connected with the fixed base (1), and the clamping ring bodies (21) are detachably connected to the fixed base (1) and can be combined with the fixed base (1) to form an annular structure.

2. The binder according to claim 1, characterized in that: The edge of the fixed base (1) is provided with an insertion groove (12); the coil clamping ring (2) comprises a pivot (22), the pivot (22) is connected to the plurality of clamping ring bodies (21), and is rotatably inserted into the insertion groove (12) to drive the plurality of clamping ring bodies (21) to rotate around the axis of the fixed base (1).

3. The binder according to claim 2, characterized in that: The insertion groove (12) is located on one side of the fixed base (1); the cross-sectional shape of the snap ring body (21) is arched; when the pivot (22) drives the snap ring body (21) to rotate, one end of the snap ring body (21) away from the pivot (22) can abut against and lock with the other side of the fixed base (1).

4. The binder according to claim 3, characterized in that: A protrusion (211) is provided on one end of the snap ring body (21) away from the pivot (22), and a slot (17) is provided on the other side of the fixed base (1). The protrusion (211) can be snapped into the slot (17) to achieve locking of the snap ring body (21) and the fixed base (1).

5. The binder according to claim 4, characterized in that: The protrusion (211) is located on the side surface of the end of the snap ring body (21) away from the pivot (22), and an arc-shaped contact surface (18) is protruding downward at the intersection of the side wall of the snap groove (17) and the bottom of the fixed base (1). When the snap ring body (21) and the fixed base (1) are in a locked state, the protrusion (211) is pressed onto the arc-shaped contact surface (18) in the vertical direction.

6. The binder according to claim 2, characterized in that: The pivot (22) is provided with linear abutment portions (221) on opposite sides thereof. When the clamping ring body (21) and the fixed base (1) are in a locked state, the linear abutment portions (221) are tightly abutted against the inner side wall of the insertion slot (12).

7. The binder according to claim 2, characterized in that: One side edge of the fixed base (1) is extended downward, and a plurality of avoidance grooves (13) are spaced apart on one side of the fixed base (1) along its axial direction, the portion between adjacent avoidance grooves (13) defines a clamping claw (14), and a limiting wall plate (15) is provided at the bottom of the fixed base (1) and is arranged opposite to the clamping claw (14), the space between the clamping claw (14) and the limiting wall plate (15) is defined as the insertion groove (12), and when the pivot (22) is inserted into the insertion groove (12), the clamping ring body (21) can be movably accommodated in the avoidance groove (13).

8. The binder according to claim 7, characterized in that: A reinforcing rib plate (16) in a cross shape is protruding from the bottom of the fixed base (1).

9. The binder according to claim 8, characterized in that: The reinforcing rib plate (16) comprises a first protruding plate (161) and a second protruding plate (162), wherein the first protruding plate (161) is extended along the axial direction of the fixed base (1), and the second protruding plate (162) is horizontally perpendicular to the first protruding plate (161), and the second protruding plate (162) is arranged between adjacent limiting wall plates (15), and a buckling guide groove (1621) is arranged on the side of the second protruding plate (162) facing the avoidance groove (13), and the buckling guide groove (1621) is used to cooperate with the arc surface of the pivot (22).

10. The binder according to any one of claims 1 to 9, characterized in that: The fixing base (1) is provided with a countersunk hole (11), and the fixing base (1) is riveted to the part to be fixed via a riveting piece passing through the countersunk hole (11).

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