Dual-handed pull-rod binder

Abstract

A two-hand pull-rod binder includes a main body, a clamp, a pull-out component, and a binder cover. The clamp is located on the side of the main body and can slide laterally relative to the main body. The pull-out component is located at the end of the main body and can slide vertically relative to the main body. The vertical sliding of the pull-out component drives the clamp to slide laterally. The main body has a fixed half-ring, and the clamp has a movable half-ring that can engage with the fixed half-ring. By covering the main body and the clamp with the middle connecting surface of the binder cover, the fixed half-ring and the movable half-ring are exposed through the middle connecting surface, thus completely concealing the internal moving structure of the binder. This not only makes the product appearance cleaner and more aesthetically pleasing, meeting the integrated design requirements of modern stationery, but also effectively prevents the clamp from directly contacting the paper edge during lateral sliding, preventing paper wear, fuzzing, or wrinkling, and significantly improving the lifespan and integrity of the paper.

Description

Technical Field

[0001] This utility model relates to the field of binder technology, specifically to a two-hand lever binder. Background Technology

[0002] Loose-leaf binders, as a stationery item that allows for the free addition and removal of pages and facilitates document organization, are widely used in office and study settings. Currently, loose-leaf binders on the market typically consist of three parts: a cover, binders, and paper. The cover includes a first cover, a second cover, and a connecting surface between the two. The binders are installed on the connecting surface and are equipped with clasps arranged along the length of the binder, allowing for the loading and unloading of paper by opening and closing the clasps.

[0003] For example, the Chinese utility model patent "Loose-leaf Binder" with application number 202223241272.X (authorization announcement number CN218966536U) uses a single-sided pull-out plate to slide vertically, causing the loose-leaf section to slide horizontally to switch between open and closed states. Although this simplifies the operation, it has obvious defects in actual use: relying solely on a single-sided pull-out plate to control the opening and closing means that if one side of the loose-leaf book is accidentally dropped or impacted by external force, the pull-out plate may accidentally slide, causing the loose-leaf binder to open. The internal papers are easily scattered due to their weight, making it difficult to collect them completely and disrupting the page order. Subsequent sorting is time-consuming and seriously affects the user experience.

[0004] To improve the stability of single-sided pull-out binders, double-sided pull-out binders were later developed. These binders use pull tabs at both ends of the main body to control the lateral sliding of corresponding clips, effectively reducing the risk of paper scattering due to accidental sliding on one side. However, these double-sided pull-out binders still have shortcomings: the main body, the first clip, and the second clip are all directly exposed, lacking a concealed structure, resulting in poor appearance integrity and obvious splicing marks, which does not meet the modern stationery's demand for integrated aesthetics. Furthermore, when the clips slide relative to the main body, they directly contact the paper without any protective barrier, making them prone to friction with the paper edges, causing wear, fuzzing, and even paper wrinkling and shifting, damaging the writing content and affecting the paper's lifespan and integrity.

[0005] In conclusion, existing binders, whether single-sided or double-sided, still fall short in terms of structural concealment and paper protection, failing to meet users' demands for product aesthetics and safety, and urgently need further improvement. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a two-hand pull rod binder that achieves structural concealment and paper protection by covering the middle connecting surface above the main body and clamps and only exposing the buckle.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: The two-hand pull-rod binder includes a main body, a clamp, a pull-out component, and a binder cover. The clamp is located on the side of the main body and can slide horizontally relative to the main body. The pull-out component is located at the end of the main body and can slide vertically relative to the main body. The vertical sliding of the pull-out component can drive the clamp to slide horizontally. The main body is provided with a fixed half-buckle, and the clamp is provided with a movable half-buckle that can engage with the fixed half-buckle. The binder cover includes a middle connecting surface, which covers the main body and the clamp. The fixed half-buckle and the movable half-buckle pass through the middle connecting surface and are exposed.

[0008] To improve the installation stability of the intermediate connecting surface and ensure the covering effect, preferably, the main body is provided with a fixing post extending toward the intermediate connecting surface, and the intermediate connecting surface is fixed to the fixing post.

[0009] In order to achieve smooth exposure of the half-buckle and maintain the integrity of the intermediate connecting surface, preferably, the intermediate connecting surface is provided with matching clearance holes at the positions corresponding to the fixed half-buckle and the movable half-buckle, and the fixed half-buckle and the movable half-buckle are exposed through the clearance holes.

[0010] In order to rationally arrange the internal structure and provide a stable installation foundation, preferably, the main body is formed with a receiving chamber for the clamp and the pull-out member to move. The receiving chamber has a first opening on the side for the clamp to slide laterally and a second opening on the end for the pull-out member to slide vertically. At least one fixing post is provided on the bottom wall of the receiving chamber.

[0011] To achieve a smooth transition from vertical to horizontal sliding and to simplify the transmission structure, preferably, the pull-out member and the clamping member partially overlap within the receiving cavity. The pull-out member has a protrusion extending toward the clamping member, and the clamping member has an inclined groove for the protrusion to be inserted and slid. The sliding engagement of the protrusion and the inclined groove is configured to convert the vertical sliding of the pull-out member into the horizontal sliding of the clamping member.

[0012] To achieve multiple guidance and precise positioning of the lateral sliding of the clamp, preferably, each of the two opposite sidewalls of the first opening on the side of the receiving chamber is provided with a sliding groove, and the clamp is formed with a guide portion adapted to the sliding groove. The guide portion can be slidably fitted into the sliding groove to constrain the lateral sliding trajectory of the clamp. The bottom wall of the receiving chamber located at the bottom of the clamp is provided with a guide post extending toward the clamp, and the clamp is provided with a first guide groove extending along the sliding direction of the clamp and adapted to the guide post. The guide post passes through the first guide groove to further constrain the lateral sliding trajectory of the clamp.

[0013] To optimize the motion stability of the pull-out component and achieve a compact layout, preferably, the pull-out component includes a handle exposed at the end of the main body and a drive plate extending into the receiving chamber. The drive plate has a through-hole with the length of the through-hole extending along the sliding direction of the pull-out component. The fixing post located on the bottom wall of the receiving chamber passes through the through-hole to guide the vertical sliding of the pull-out component. The bottom wall of the receiving chamber also has a protruding guide rib extending along the sliding direction of the pull-out component, and the drive plate has a second guide groove adapted to the guide rib.

[0014] To achieve reliable positioning and improve the operating feel of the pull-out component at different working positions, preferably, the side of the drive plate is provided with two spaced-apart first positioning grooves and second positioning grooves, and the side wall of the receiving chamber is provided with positioning ribs that are adapted to the first positioning grooves and second positioning grooves; when the pull-out component is in the outward pulling state, the positioning ribs are engaged in the first positioning grooves to achieve positioning, and when the pull-out component is in the inward moving state, the positioning ribs are engaged in the second positioning grooves to achieve positioning.

[0015] In order to achieve a seamless connection of the overall cover structure and maintain the normal function of the half-ring, preferably, the binder cover also includes a first cover and a second cover. The two sides of the middle connecting surface are integrally formed with the first cover and the second cover of the binder cover. The corresponding positions of the first cover and the second cover are also provided with avoidance holes to avoid the fixed half-ring and the movable half-ring.

[0016] To reduce the risk of paper scattering caused by accidental sliding on one side through a dual-sided independent control structure, preferably, there are two clamps, which are spaced apart along the length of the main body on the same side of the main body, and the inclined grooves on the two clamps are inclined in opposite directions. There are also two pull-out pieces, which are correspondingly located at both ends of the main body and each connected to a clamp. The two clamps can slide independently laterally relative to the main body, and the two pull-out pieces can slide independently vertically relative to the main body. The vertical sliding of each pull-out piece causes the clamp at the corresponding position to slide laterally, and the inclined grooves on the two clamps are inclined in opposite directions.

[0017] To limit the offset when the clamp slides laterally and reduce the exposure of the internal structure, preferably, the side of the clamp is formed with a side plate that can adapt to the first opening of the side of the receiving chamber. The receiving chamber is provided with a protrusion at the first opening of the side, and the side plate is provided with a groove that adapts to the protrusion. The cooperation between the protrusion and the groove is configured to further prevent the clamp from offset when it slides laterally.

[0018] Compared with existing technologies, the advantages of this invention are as follows: By covering the main body and clips with the middle connecting surface of the binder cover, and exposing the fixed and movable half-hooks through the middle connecting surface, the internal moving structure of the binder is completely concealed. Because the middle connecting surface covers the main body and clips, the originally exposed main body and clips are hidden, avoiding the problems of poor appearance integrity and obvious splicing marks caused by exposed structures, thus meeting the modern stationery demand for integrated aesthetics. Simultaneously, the middle connecting surface forms an isolation between the clips and the paper, preventing direct contact and friction between the clips and the paper during lateral sliding, avoiding paper wear, fuzzing, wrinkling, or displacement, ensuring the lifespan of the paper and the integrity of the written content. This solves the shortcomings of existing double-sided pull-out binders in terms of structural concealment and paper protection, meeting users' needs for product aesthetics and safety. Furthermore, this covering structure also prevents foreign objects from entering the binder. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of this embodiment (the first cover and the second cover are in a closed state);

[0020] Figure 2 This is a three-dimensional structural diagram of this embodiment (the first cover and the second cover are in the open state, and the movable buckle is in the inward closed state);

[0021] Figure 3 This is a three-dimensional structural diagram of this embodiment (the first cover and the second cover are in the open state, and the movable buckle is in the outward open state);

[0022] Figure 4 This is a schematic diagram of the decomposed state structure of this embodiment;

[0023] Figure 5 This is a schematic diagram of the decomposed state structure from another perspective in this embodiment;

[0024] Figure 6 This is a schematic diagram of the cooperation structure between the main body and the pull-out component in this embodiment (the pull-out component is in the unpulled state);

[0025] Figure 7 This is a schematic diagram of the cooperation structure between the main body and the pull-out component in this embodiment (the pull-out component is in the outward pulling state). Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Figures 1-7 The figure shown is the preferred embodiment of this utility model.

[0028] The two-hand pull-rod binder in this embodiment aims to solve the problems of poor appearance integrity and easy paper wear caused by the direct exposure of the main body and clamp of the existing double-sided pull-out binder. It mainly includes a main body 1, clamp 2, pull-out component 3 and binder cover 4, etc. By accommodating the transmission components in the cavity, isolating and protecting the middle connecting surface, and adapting the double-sided transmission with reverse double oblique grooves, it achieves an integrated and beautiful structure, zero paper wear and stable operation, and meets the needs of modern stationery for aesthetics, practicality and safety.

[0029] The structure and connection relationship of each component in this embodiment are as follows:

[0030] Main Body 1: Reference Figures 4 to 7 As shown, in this embodiment, the main body 1 can be integrally injection molded from high-strength plastic, serving as the installation and support base for the overall structure. Multiple sets of fixed semi-hooks 1a are spaced apart along the length of the top. Each set of fixed semi-hooks 1a has a C-shaped or arc-shaped structure, used to cooperate with the movable semi-hooks 2a of the clamp 2 to form a complete hook to hold the paper. The main body 1 has two receiving chambers 1c, each with a first opening 1c1 on its side for the clamp 2 to slide laterally. Both ends of the main body 1 have openings for the pull-out member 3. The second opening 1c2 slides vertically and is connected to the corresponding receiving chamber 1c. Each receiving chamber 1c has at least one fixed post 1b on its bottom wall. In this embodiment, the bottom wall of the receiving chamber 1c has one fixed post 1b protruding upward. At the same time, there is also one fixed post 1b in the middle area of ​​the main body 1. The fixed post 1b in the middle area and the fixed post 1b on the bottom wall of the receiving chamber 1c are distributed at intervals along the length of the main body 1. The top of each fixed post extends out of the top of the main body 1 to facilitate connection to the middle connecting surface 4a of the binder cover 4.

[0031] On the left and right side walls of the first opening 1c1 on the side of each receiving chamber 1c, there are symmetrically provided sliding grooves 1c3 extending along the sliding direction of the clamp 2. The sliding grooves 1c3 are used to guide and adapt to the guide part 2c of the clamp 2. A guide post 1d is also provided on the bottom wall of the receiving chamber 1c at the position below the clamp 2. The guide post 1d is used to pass through the first guide groove 2d of the clamp 2. On the inner side wall of each receiving chamber 1c, there is a positioning rib 1f. The positioning rib 1f is used to cooperate with the two positioning grooves of the pull-out piece 3. At the edge of the first opening 1c1 on the side of the receiving chamber 1c, there are two protrusions 1g spaced along the length direction. The protrusions 1g are rectangular protrusions and are used to adapt to the two grooves 2e1 of the side plate 2e of the clamp 2. In addition, on the bottom wall of each receiving chamber 1c, there is also a guide rib 1e extending along the sliding direction of the pull-out piece 3. The guide rib 1e is a long strip protrusion and is used to adapt to the second guide groove 3c2 of the pull-out piece 3.

[0032] Clip 2: Reference Figure 4 and Figure 5As shown, in this embodiment, there are two clamps 2, which are installed at intervals along the length of the main body 1 in their respective receiving chambers 1c, and are all located on the same side of the main body 1. The top of each clamp 2 corresponds to the position of the fixed half-ring 1a of the main body 1, and is provided with multiple C-shaped or arc-shaped movable half-rings 2a. The movable half-rings 2a are adapted to the size of the fixed half-rings 1a and can be locked or disengaged as the clamp 2 slides. In this embodiment, the bottom of each clamp 2 is provided with two inclined grooves 2b with the same inclination direction and spaced apart. The inclined grooves 2b of the two clamps 2 have opposite inclination directions. The width of the inclined grooves 2b is adapted to the diameter of the protrusion 3a of the pull-out member 3, and is used for the protrusion 3a to be inserted and slid. Each of the left and right sides of the clamp 2 has a guide portion 2c extending outward. The guide portion 2c is adapted to the slide groove 1c3 of the receiving chamber 1c and can be slidably fitted into the slide groove 1c3. The bottom of the clamp 2 is provided with a first guide groove 2d corresponding to the position of the guide post 1d of the main body 1. The first guide groove 2d is a long strip-shaped groove structure. The guide post 1d can pass through the first guide groove 2d and slide along the groove. A side plate 2e is integrally formed on the side of the clamp 2 facing the outward sliding direction. The size of the side plate 2e is adapted to the first opening 1c1 of the receiving chamber 1c and can cover the first opening 1c1. The side plate 2e is provided with three grooves 2e1 corresponding to the position of the protrusion 1g of the main body 1. The grooves 2e1 are rectangular holes. The protrusion 1g can be embedded in the grooves 2e1.

[0033] Pull-out component 3: Reference Figures 4 to 7 As shown, in this embodiment, there are two pull-out components 3, which are respectively installed at both ends of the main body 1. Each pull-out component 3 includes an integrally formed handle 3b and a drive plate 3c. The handle 3b is exposed outside the second opening 1c2 at the end of the main body 1, which is convenient for the user to hold and pull. The drive plate 3c is a plate-shaped structure that extends into the receiving chamber 1c from the second opening 1c2 of the main body 1, and has two cylindrical protrusions 3a protruding upward. The diameter of the protrusions 3a is adapted to the width of the inclined groove 2b of the clamp 2, and can be inserted into the inclined groove 2b. The drive plate 3c also has an elongated hole 3c1. The length of the elongated hole 3c1 extends along the vertical sliding direction of the pull-out member 3. The width of the elongated hole 3c1 is adapted to the diameter of the fixing post 1b of the main body 1. The fixing post 1b extending from the bottom wall of the receiving chamber 1c passes through the elongated hole 3c1 and allows the drive plate 3c to slide along the hole. A second guide groove 3c2 is also provided on the drive plate 3c at the position corresponding to the guide rib 1e of the main body 1. The second guide groove 3c2 is a U-shaped groove structure, adapted to the guide rib 1e and can slide along the rib. On the side wall of the drive plate 3c away from the protrusion 3a, two positioning grooves are provided at intervals, namely the first positioning groove 3c3 and the second positioning groove 3c4. The positioning grooves are hemispherical grooves, adapted to the positioning rib 1f of the main body 1, and are used to realize the outward pulling and inward positioning of the pull-out member 3.

[0034] Binder cover 4: Reference Figures 1 to 4As shown, in this embodiment, the binder cover 4 can be integrally molded from flexible plastic material, including a middle connecting surface 4a, a first cover 4b, and a second cover 4c. The middle connecting surface 4a is a rectangular flat plate structure that covers the main body 1 and the clamp 2. The middle connecting surface 4a is provided with mounting holes corresponding to the number of fixing posts 1b of the main body 1, and is fixed to the top of the fixing posts 1b by means of heat fusion, snap fasteners, or screws. The middle connecting surface 4a is provided with multiple clearance holes 4a1 corresponding to the positions of the fixed half-ring 1a of the main body 1 and the movable half-ring 2a of the clamp 2. The size of the clearance holes 4a1 is slightly larger than the outer diameter of the ring to ensure that the ring can pass through and be exposed. The first cover 4b and the second cover 4c are integrally formed on the left and right sides of the middle connecting surface 4a, respectively, and can be folded relative to the middle connecting surface 4a to realize the opening and closing of the binder; and the first cover 4b and the second cover 4c are also provided with the same size avoidance hole 4a1 corresponding to the position of the avoidance hole 4a1 of the middle connecting surface 4a, so as to avoid the cover from blocking the buckle when it is closed; the first cover 4b and the second cover 4c are the same size, and when they are unfolded, they can form a complete binder cover structure together with the middle connecting surface 4a.

[0035] The working principle of the double-lever binder in this embodiment is explained as follows:

[0036] 1. Buckle opening (paper loading / unloading) stage: When paper needs to be loaded or unloaded, the user pulls the handles 3b of the pull-out parts 3 at both ends of the main body 1 outward with their fingers. The pull-out parts 3 slide vertically outward along the second opening 1c2 of the main body 1. During this process, the elongated hole 3c1 of the drive plate 3c of the pull-out parts 3 slides along the fixed post 1b extending from the bottom wall of the receiving chamber 1c of the main body 1, and the second guide groove 3c2 slides along the guide rib 1e. The double guidance ensures that the pull-out parts 3 slide only vertically. When the pull-out parts 3 are pulled outward to the limit position, the positioning rib 1f of the side wall of the receiving chamber 1c of the main body 1 elastically engages with the first positioning groove 3c3 of the drive plate 3c, realizing the outward positioning of the pull-out parts 3 and preventing them from accidentally resetting. As the pull-out piece 3 slides, the protrusion 3a on its drive plate 3c slides within the inclined groove 2b of the clamp 2. The two clamps 2 are located on the same side of the main body 1, and because the inclined grooves 2b of the two clamps are tilted in opposite directions, the vertical displacement of the protrusion 3a is converted into the sliding of the two clamps 2 along the same lateral direction through the inclined trajectory of the inclined groove 2b (the two clamps 2 slide synchronously towards the same side away from the fixed half-ring 1a). When the clamp 2 slides, its two guide portions 2c slide along the sliding groove 1c3 of the receiving chamber 1c, and the bottom first guide groove 2d slides along the guide post 1d. This double guidance ensures the accurate trajectory of the clamp 2. As the clamp 2 slides, its top movable half-ring 2a moves away from the fixed half-ring 1a of the main body 1, and the two separate to form an opening. The user can align the paper hole with the exposed ring to load or remove the paper. (See reference for details.) Figure 3 As shown.

[0037] 2. Closing (Paper Clamping) Stage: After the paper is loaded and unloaded, the user presses the handle 3b of the pull-out piece 3 inward with their finger. The pull-out piece 3 slides vertically inward along the second opening 1c2. The elongated hole 3c1 of the drive plate 3c and the second guide groove 3c2 slide in opposite directions along the fixed post 1b and guide rib 1e extending from the bottom wall of the receiving chamber 1c of the main body 1. When the pull-out piece 3 moves inward to the initial position, the positioning rib 1f of the main body 1 engages with the second positioning groove 3c4 of the drive plate 3c, thus positioning the pull-out piece 3. During this process, the protruding post 3a slides in opposite directions in the inclined groove 2b, pushing the two clamps 2 located on the same side of the main body 1 to reset in the same transverse direction (the two clamps 2 slide synchronously towards the same side close to the fixed half-clamp 1a). The movable half-clamp 2a at the top of the clamp 2 gradually approaches the fixed half-clamp 1a until it is fully engaged, stably clamping the paper in the clasp. At this point, the middle connecting surface 4a of the binder cover 4 completely covers the main body 1 and the clip 2, with only the snap ring exposed. This solves the problem of exposed structure and also creates an isolation between the clip 2 and the paper, preventing damage to the paper in case the clip 2 accidentally slides. (See reference for details.) Figure 2 As shown.

[0038] It should be noted that in the description of this embodiment, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing this utility model 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 limitations on this utility model. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model 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 limitations on this utility model. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A two-hand pull-rod binder, comprising a main body (1), a clamp (2), a pull-out component (3), and a binder cover (4), wherein the clamp (2) is disposed on the side of the main body (1) and can slide laterally relative to the main body (1), the pull-out component (3) is disposed at the end of the main body (1) and can slide vertically relative to the main body (1), and the vertical sliding of the pull-out component (3) can drive the clamp (2) to slide laterally; the main body (1) is provided with a fixed half-ring (1a), and the clamp (2) is provided with a movable half-ring (2a) that can engage with the fixed half-ring (1a), characterized in that: The binder cover (4) includes a middle connecting surface (4a) that covers the body (1) and the clip (2), and the fixed half-buckle (1a) and the movable half-buckle (2a) are exposed through the middle connecting surface (4a).

2. The two-hand lever binder according to claim 1, characterized in that: The main body (1) is provided with a fixing post (1b) extending toward the intermediate connecting surface (4a), and the intermediate connecting surface (4a) is fixed to the fixing post (1b).

3. The two-hand lever binder according to claim 1, characterized in that: The intermediate connecting surface (4a) is provided with matching clearance holes (4a1) at the positions corresponding to the fixed half-ring (1a) and the movable half-ring (2a), and the fixed half-ring (1a) and the movable half-ring (2a) are exposed through the clearance holes (4a1).

4. The two-hand lever binder according to claim 2, characterized in that: The main body (1) has a receiving chamber (1c) for the clamp (2) and the pull member (3) to move. The receiving chamber (1c) has a first opening (1c1) on the side for the clamp (2) to slide laterally and a second opening (1c2) on the end for the pull member (3) to slide vertically. At least one fixed post (1b) is provided on the bottom wall of the receiving chamber (1c).

5. The two-hand lever binder according to claim 4, characterized in that: The pull-out member (3) and the clamping member (2) partially overlap in the receiving chamber (1c). The pull-out member (3) is provided with a protrusion (3a) extending toward the clamping member (2). The clamping member (2) is provided with a sloping groove (2b) for the protrusion (3a) to be inserted and slid. The sliding engagement of the protrusion (3a) and the sloping groove (2b) is configured to convert the vertical sliding of the pull-out member (3) into the lateral sliding of the clamping member (2).

6. The two-hand lever binder according to claim 4, characterized in that: The two opposite side walls of the first opening (1c1) on the side of the receiving chamber (1c) are provided with sliding grooves (1c3), and the clamp (2) is provided with a guide part (2c) adapted to the sliding groove (1c3). The guide part (2c) can be slidably fitted into the sliding groove (1c3) to constrain the lateral sliding trajectory of the clamp (2). The bottom wall of the receiving chamber (1c) located at the bottom of the clamp (2) is provided with a guide post (1d) extending toward the clamp (2). The clamp (2) is provided with a first guide groove (2d) extending along the sliding direction of the clamp (2) and adapted to the guide post (1d). The guide post (1d) passes through the first guide groove (2d) to further constrain the lateral sliding trajectory of the clamp (2).

7. The two-hand lever binder according to claim 4, characterized in that: The pull-out component (3) includes a handle (3b) exposed at the end of the main body (1) and a drive plate (3c) extending into the receiving chamber (1c). The drive plate (3c) is provided with a long strip hole (3c1) through it. The length direction of the long strip hole (3c1) extends along the sliding direction of the pull-out component (3). The fixing post (1b) located on the bottom wall of the receiving chamber (1c) passes through the long strip hole (3c1) to guide the vertical sliding of the pull-out component (3). The bottom wall of the receiving chamber (1c) is also provided with a guide rib (1e) extending along the sliding direction of the pull-out member (3), and a second guide groove (3c2) adapted to the guide rib (1e) is provided through the drive plate (3c).

8. The two-hand lever binder according to claim 7, characterized in that: The drive plate (3c) has two spaced-apart first positioning grooves (3c3) and second positioning grooves (3c4) on its side, and the side wall of the receiving chamber (1c) has positioning ribs (1f) that are adapted to the first positioning grooves (3c3) and second positioning grooves (3c4). When the pull-out member (3) is in the outward pulling state, the positioning rib (1f) is engaged in the first positioning groove (3c3) to achieve positioning. When the pull-out member (3) is in the inward moving state, the positioning rib (1f) is engaged in the second positioning groove (3c4) to achieve positioning.

9. The two-hand lever binder according to claim 3, characterized in that: The binder cover (4) also includes a first cover (4b) and a second cover (4c). The two sides of the middle connecting surface (4a) are integrally formed with the first cover (4b) and the second cover (4c) of the binder cover (4). The corresponding positions of the first cover (4b) and the second cover (4c) are also provided with the avoidance holes (4a1) for avoiding the fixed half buckle (1a) and the movable half buckle (2a).

10. The two-hand lever binder according to any one of claims 1 to 9, characterized in that: The clamp (2) has two clamps, which are spaced apart along the length of the main body (1) on the same side of the main body (1), and the inclined grooves (2b) provided on the two clamps (2) have opposite inclination directions. The pull-out member (3) has two pull-out members, which are respectively provided at both ends of the main body (1) and each is connected to a clamp (2). The two clamps (2) can slide horizontally relative to the main body (1) independently, and the two pull-out pieces (3) can slide vertically relative to the main body (1) independently. The vertical sliding of each pull-out piece (3) causes the clamp (2) at the corresponding position to slide horizontally. The inclined grooves (2b) provided on the two clamps (2) have opposite inclination directions.

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