Accounting book folder

Abstract

The invention relates to the technical field of account book arrangement, and discloses an accounting book folder which comprises a box body, a box cover arranged above one side of the box body, a loose-leaf binder arranged on one side of the inner bottom of the box body, adjusting holes formed in the loose-leaf binder in an array mode, metal rings arranged on the loose-leaf binder and account book pages, and the metal rings penetrate through the adjusting holes to be connected with the loose-leaf binder. The folder further comprises an adjusting assembly arranged in the middle of one side of the box body, a fixing assembly and a sealing assembly, the adjusting assembly is located in the loose-leaf binder and fixedly connected with the metal ring, and the fixing assembly and the sealing assembly are symmetrically arranged on the two sides of the top of the box body. The metal ring on the loose-leaf binder can be adjusted by arranging the adjusting assembly, the adjusting plate is adjusted by pulling the pull rope to change the position of the U-shaped clamping block, the metal ring can correspond to the hole in the side of the account book page, and therefore the loose-leaf binder can adapt to the account book pages of different specifications and sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of account book arrangement, and in particular to an accounting account book folder. Background Art

[0002] Accounting books, referred to as books for short, are composed of pages with specific formats and interconnectedness. They are used to comprehensively record the economic business matters of an enterprise or unit in a chronological and classified manner. Accounting book files, especially loose-leaf book folders, are mainly used to bind and preserve the pages of loose-leaf books. The pages of loose-leaf books can be added or reduced at will, which makes it convenient for accountants to flexibly adjust the contents of the books according to the needs of economic business. They are an indispensable tool for accountants in their work. Accountants can ensure the integrity and orderliness of the books by using folders, which is convenient for reference and management.

[0003] The structure of a loose-leaf account book folder includes a cover and a back panel as a basic framework for providing support and protection for the account book, and a binder for storing and fixing the account book. The binder is usually composed of one or more annular metal rings and has a certain strength and durability to ensure the safety and stability of the account book.

[0004] However, the prior art still has the following defects:

[0005] 1. The binders in the existing loose-leaf account book folders are usually fixedly installed on the cover and the back plate, and the distance between the metal rings is fixed. However, the distances between the side holes of account books of different specifications are different. When the accountants are sorting the account books, they cannot adjust the positions of the metal rings on the folders when facing account books of different specifications. They can only replace the binders with metal rings that match the distance between the side holes of the account books.

[0006] 2. When taking the mobile folder, the stress points of the account book in the folder are mostly concentrated on the connection holes between the side of the account book and the metal ring. The side of the account book is relatively weak due to the hole setting. When the account book is moved, the side of the account book is shaken, and the side of the account book cannot withstand the impact of the metal ring, causing the side of the account book to be damaged and separated from the metal ring, causing the account book to be lost or replaced, affecting the integrity and orderliness of the account book;

[0007] 3. The sealing of existing folders is usually only provided with a rubber ring, which may be deformed after long-term use, resulting in reduced sealing effect. Alternatively, improving the sealing performance usually requires many additional steps, which is cumbersome. Summary of the invention

[0008] In view of the problems of the prior art that the position of the metal ring on the binder cannot be adjusted, it cannot adapt to account books of different specifications and sizes, the connection between the metal ring and the side holes of the account book and the metal ring is very weak and cannot withstand the impact force of the metal ring on the side of the account book when moving, and the existing folders are not perfect in the sealing process, an accounting book folder is proposed.

[0009] The purpose is to adjust the position of the metal ring on the binder so that the metal ring can correspond to the holes on the sides of account books of different specifications and sizes; secondly, the account book is squeezed and fixed by opening and closing the folder, so as to change the main force point of the account book, thereby avoiding damage to the holes on the sides of the account book caused by the impact of the metal ring when moving; and when the folder is opened and closed to squeeze the account book, the rubber ring on the folder is squeezed simultaneously, thereby improving the sealing effect of the folder, ensuring a dry environment in the folder, and making the operation very simple without the need for additional steps.

[0010] The technical solution of the present invention is an accounting book folder, comprising a box body, a box cover movably mounted on one side of the box body, a binder mounted on one side of the bottom of the box body, adjustment holes arranged in an array on the binder, a metal ring and account book pages movably mounted on the binder, the metal ring passing through the adjustment hole and connected to the binder, and also comprising an adjustment component mounted in the middle of one side of the box body, the adjustment component being located inside the binder and fixedly connected to the metal ring, a fixing component and a sealing component symmetrically mounted on both sides of the top of the box body, the fixing component realizing extrusion and fixing of the account book pages by opening and closing the box cover, and the sealing component improving the sealing effect between the box cover and the box body by strengthening the connection between the box cover and the box body during the movement of the fixing component;

[0011] The adjustment assembly includes two adjustment plates symmetrically slidably mounted in the binder, a metal ring fixedly mounted on one side of the adjustment plate, an adjustment slot provided on one side of the adjustment plate, a telescopic rod with two ends respectively fixed on the inner walls of the two adjustment slots, the two adjustment plates are connected by the telescopic rod, and an adjustment spring sleeved on the telescopic rod, the two ends of the adjustment spring are respectively fixedly connected to the inner walls of the two adjustment slots;

[0012] A movable hole is opened on one side of the binder, and a drawstring is fixedly connected to one end of the two adjustment plates. The drawstring passes through the adjustment hole and is located outside the binder. The two adjustment plates are driven to move relative to each other by pulling the drawstring.

[0013] Furthermore, a card slot is arranged in an array in the center portion of one side of the box body, and a U-shaped card block is installed in the middle position of the pull rope. The shape of the card slot is adapted to the U-shaped card block and is used to limit and fix the U-shaped card block.

[0014] Furthermore, the telescopic rod comprises a telescopic outer cylinder and telescopic inner rods respectively telescopically mounted at both ends, protrusions are mounted at both ends of the telescopic inner rod, and limiting grooves for the movement of the protrusions are symmetrically opened on the inner wall of the telescopic outer cylinder.

[0015] Furthermore, the fixing assembly includes a mounting frame fixedly mounted on one side of the box body, a first connecting rod and a second connecting rod respectively hingedly mounted on both sides of the lower crossbar, the top ends of the first connecting rod and the second connecting rod are respectively hingedly mounted on both sides of the upper crossbar, and a pressure plate is movably mounted on one end of the upper crossbar through a universal ball;

[0016] The first connecting rod is connected to the middle of the box cover through an extrusion spring, a straight rod is installed in one end of the extrusion spring close to the first connecting rod, and one end of the straight rod is fixedly connected to one side of the middle part of the first connecting rod.

[0017] Furthermore, a cotton pressure pad is detachably mounted on the pressure plate, and is used to press and fix the account book.

[0018] Further, the sealing assembly includes a first rubber ring mounted on the top surface of the box body, a second rubber ring mounted on the bottom surface of the box cover, a transverse slide groove provided on one side of the bottom of the box cover, a movable rod slidably installed in the slide groove, a push rod fixedly installed at the end of the movable rod, a movable groove provided on one side of the box body, a stopper movably installed at the bottom of the movable groove and a return spring, and the stopper is movably installed at the bottom of the movable groove through the return spring;

[0019] Both ends of the push rod are respectively provided with round tables, and the stop block is provided with an inclined block used in conjunction with the round tables. One end of the push rod is limited by the first connecting rod or the stop block through sliding.

[0020] Furthermore, the shape of the movable groove is an arc shape, and the arc shape of the movable groove is the same as the movement trajectory of the push rod.

[0021] Furthermore, the shape of the first rubber ring is an inwardly concave shape, and the shape of the second rubber ring is an outwardly convex shape that matches the inward concave shape of the first rubber ring.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The metal ring on the binder can be adjusted by setting the adjustment component. When encountering account book pages of different sizes, the adjustment plate can be adjusted by pulling the pull rope to change the position of the U-shaped card block, so that the metal ring can correspond to the holes on the side of the account book page, thereby adapting to account book pages of different sizes, avoiding accountants from finding difficult to find suitable folders due to size issues when sorting account book pages.

[0024] 2. By setting up a fixing component, when opening and closing the folder, the movement trajectory of the box cover can drive the connecting rod to move, thereby driving the pressure plate to move, so that the pressure pad squeezes and fixes the account book pages, changing the main force point of the account book pages, avoiding damage caused by the impact of the metal ring on the side holes of the account book pages during movement, thereby increasing the service life of the account book pages and avoiding the loss of the account books.

[0025] 3. By providing a sealing component, the push rod can be driven downward synchronously when the folder is opened and closed to squeeze the account book pages, so that under the action of the block and the return spring, the push rod and the box cover are driven to move down for the next step and the push rod is limited, thereby squeezing the two rubber rings on the box body and the box cover, improving the sealing effect of the folder, ensuring the dry environment in the folder, so that the account book page files can maintain their original quality and readability for a long time, and no additional redundant steps are required, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the internal three-dimensional structure of the present invention when it is in an open state;

[0027] Figure 2 It is a schematic diagram of the overall side cross-sectional structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the installation structure of the adjustment component of the present invention;

[0029] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0030] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the telescopic rod of the present invention;

[0031] Figure 6 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention;

[0032] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0033] Figure 8 It is a schematic diagram of the overall structure of the fixing assembly of the present invention;

[0034] Fig. 9 For the present invention Figure 6 The enlarged structural diagram at C in the middle;

[0035] Fig.10 For the present invention Figure 6 Enlarged structural diagram at D in the middle.

[0036] In the figure:

[0037] 1. Box body; 2. Box cover; 3. Binder; 31. Metal ring; 301. Adjustment hole; 302. Activity hole; 4. Account book page; 5. Adjustment assembly; 501. Adjustment slot; 502. Card slot; 503. Limiting slot; 51. Adjustment plate; 52. Telescopic rod; 521. Telescopic outer cylinder; 522. Telescopic inner rod; 523. Bump; 53. Adjustment spring; 54. Pull rope; 55. U-shaped block; 6 , fixing assembly; 61, mounting frame; 62, lower cross bar; 63, first connecting rod; 64, second connecting rod; 65, upper cross bar; 66, pressure plate; 67, extrusion spring; 671, straight rod; 7, sealing assembly; 701, movable groove; 702, slide groove; 71, first rubber ring; 72, second rubber ring; 73, movable rod; 74, push rod; 75, block; 76, reset spring; 8, pressure pad. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] Example 1, reference Figure 1-Figure 7 , which is the first embodiment of the present invention, provides an accounting book page 4 folder, including a box body 1, a box cover 2 movably installed on the upper side of one side of the box body 1, a binder 3 installed on one side of the bottom of the box body 1, an adjustment hole 301 arranged in an array on the binder 3, a metal ring 31 and an account book page 4 movably installed on the binder 3, the metal ring 31 passes through the adjustment hole 301 and is connected to the binder 3, and also includes an adjustment component 5 installed in the middle of one side of the box body 1, the adjustment component 5 is located inside the binder 3 and is fixedly connected to the metal ring 31, a fixing component 6 and a sealing component 7 symmetrically arranged on both sides of the top of the box body 1, the fixing component 6 realizes the extrusion and fixing of the account book page 4 by opening and closing the box cover 2, and the sealing component 7 improves the sealing effect between the box cover 2 and the box body 1 by strengthening the connection between the box cover 2 and the box body 1 during the movement of the fixing component 6;

[0040] The adjustment assembly 5 includes two adjustment plates 51 symmetrically slidably mounted in the binder 3, a metal ring 31 fixedly mounted on one side of the adjustment plate 51, an adjustment slot 501 provided on one side of the adjustment plate 51, a telescopic rod 52 whose two ends are respectively fixed on the inner walls of the two adjustment slots 501, the two adjustment plates 51 are connected by the telescopic rod 52, and an adjustment spring 53 sleeved on the telescopic rod 52, the two ends of the adjustment spring 53 are respectively fixedly connected to the inner walls of the two adjustment slots 501;

[0041] A movable hole 302 is opened on one side of the binder 3, and a pull rope 54 is fixedly connected to one end of the two adjustment plates 51. The pull rope 54 passes through the adjustment hole 301 and is located outside the binder 3. By pulling the pull rope 54, the two adjustment plates 51 are driven to move relative to each other.

[0042] The two ends of the pull rope 54 are connected to the two adjustment plates 51, and the two adjustment plates 51 are moved simultaneously and the two metal rings 31 are moved symmetrically, so that the two metal rings 31 can be adjusted to different sizes. The box cover 2 and the box body 1 are closed after the box cover 2 and the box body 1 are closed. In the process of pushing the box cover 2 close to the box body 1, the moving track of the box cover 2 can drive the fixing component 6 to squeeze and fix the book pages 4, change the main stress points of the book pages 4, increase the stress area, and avoid the book pages 4 being damaged by the impact of the metal ring 31 during the movement of the folder. In the process, the movable fixing component 6 can trigger the sealing component 7, and the sealing component 7 can drive the connection between the box cover 2 and the box body 1 to be tighter. The action of opening and closing the folder can not only squeeze and fix the book pages 4, change the stress points of the book pages 4, increase the stress area of ​​the book pages 4, and better protect the book pages 4, but also make the connection between the box cover 2 and the box body 1 tighter, thereby improving the sealing inside the folder, ensuring the dryness of the air inside the folder, and avoiding the book pages 4 in the folder from being damaged due to the external environment when the folder is stored for a long time.

[0043] Reference Figure 7 A card slot 502 is arranged in an array at the center of one side of the box body 1, and a U-shaped card block 55 is installed at the middle position of the pull rope 54. The shape of the card slot 502 is adapted to the U-shaped card block 55 and is used to limit and fix the U-shaped card block 55.

[0044] Specifically, the U-shaped block 55 is pulled to drive the pull rope 54 to adjust its position, and the U-shaped block 55 is placed on the slots 502 at different heights to achieve the mutual movement of the adjustment plate 51. The position of the U-shaped block 55 can be limited by the slots 502 to avoid the pull rope 54 pulling the U-shaped block 55 to cause displacement, thereby affecting the position of the metal ring 31.

[0045] Reference Figure 5 The telescopic rod 52 includes a telescopic outer cylinder 521 and a telescopic inner rod 522 respectively telescopically installed at both ends. Both ends of the telescopic inner rod 522 are installed with protrusions 523. The inner wall of the telescopic outer cylinder 521 is symmetrically provided with limiting grooves 503 for the movement of the protrusions 523.

[0046] Specifically, the limiting groove 503 and the protrusion 523 can enable the telescopic inner rod 522 to telescope in the telescopic outer tube 521 while avoiding the telescopic inner rod 522 from being separated from the telescopic outer tube 521, and avoid the situation where the adjustment plate 51 is too far away and cannot be reset, thereby improving the use effect of the device.

[0047] Example 2, reference Figure 1-Figure 8 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the fixing assembly 6 includes a mounting frame 61 fixedly mounted on one side of the box body 1, a first connecting rod 63 and a second connecting rod 64 respectively hingedly mounted on both sides of a lower crossbar 62, the top ends of the first connecting rod 63 and the second connecting rod 64 are respectively hingedly mounted on both sides of an upper crossbar 65, and a pressure plate 66 is movably mounted on one end of the upper crossbar 65 through a universal ball;

[0048] The first connecting rod 63 is connected to the middle of the box cover 2 through a compression spring 67 . A straight rod 671 is installed in one end of the compression spring 67 close to the first connecting rod 63 . One end of the straight rod 671 is fixedly connected to one side of the middle of the first connecting rod 63 .

[0049] Specifically, when the box cover 2 is pushed close to the box body 1, the movable box cover 2 drives the extrusion spring 67 to push the first connecting rod 63 to move, and the first connecting rod 63 drives the upper cross bar 65 to move forward in an arc shape, thereby driving the second connecting rod 64 to move along the same trajectory, thereby driving the pressure plate 66 to move. Under the action of the universal ball, the pressure plate 66 can better contact with the account book page 4 to achieve the extrusion and fixation of the account book page 4, and the pressure plate 66 is driven to fix the account book page 4 by opening and closing. Therefore, when moving, the main force point of the account book page 4 is transferred from the metal ring 31 and the side hole to the contact surface with the pressure plate 66, thereby increasing the force area of ​​the account book page 4, avoiding the side holes of the account book page 4 from being shaken and impacted by the metal ring 31 for a long time, causing damage to the account book page 4, and protecting the account book page 4.

[0050] Reference Figure 8 A pressing cotton pad 8 is detachably mounted on the pressing plate 66 , and the pressing cotton pad 8 is used to press and fix the account book page 4 .

[0051] Specifically, the cotton pad 8 is pressed against the account book page 4 to adapt to account book pages 4 of different thicknesses, and the cotton pad is designed to be soft, so that it will not cause indentations on the account book page 4 while pressing and fixing, thereby avoiding damage to the account book page 4. The remaining structure is the same as that of embodiment 1.

[0052] Example 3, reference Figure 1-Figure 10 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the sealing assembly 7 includes a first rubber ring 71 snap-fitted and installed on the top surface of the box body 1, a second rubber ring 72 snap-fitted and installed on the bottom surface of the box cover 2, a transverse slide groove 702 provided on one side of the bottom of the box cover 2, a movable rod 73 slidably installed in the slide groove 702, a push rod 74 fixedly installed at the end of the movable rod 73, a movable groove 701 provided on one side of the box body 1, a stopper 75 and a return spring 76 movably installed at the bottom of the movable groove 701, and the stopper 75 is movably installed at the bottom of the movable groove 701 through the return spring 76;

[0053] Both ends of the push rod 74 are respectively provided with round tables, and the stopper 75 is provided with an inclined block used in conjunction with the round table. One end of the push rod 74 is limited by the first connecting rod 63 or the stopper 75 by sliding.

[0054] Specifically, when the box cover 2 is brought close to the box body 1, the movement of the box cover 2 drives the movable rod 73 to move in the same trajectory. As the box cover 2 moves, the movable rod 73 is driven to move in the movable groove 701. At the same time, the first connecting rod 63 that moves in the same manner squeezes one end of the push rod 74. Since the two ends of the push rod 74 are arranged in a truncated cone shape, the push rod 74 approaches the side of the box body 1 during the downward movement. When the push rod 74 approaches the stop block 75, the push rod 74 is driven downward by the action of the reset spring 76 and the limit of the push rod 74 is completed. At this time, the box cover 2 is driven to move further downward synchronously, so that the second rubber ring 72 on the box cover 2 and the first rubber ring 71 on the box body 1 are more tightly connected, thereby improving the sealing inside the folder, ensuring the dryness of the air in the folder, reducing the influence of the external environment on the account book pages 4 in the folder, and making the account book pages 4 have good readability under long-term storage.

[0055] Reference Fig. 9 The shape of the movable groove 701 is an arc shape, and the arc shape of the movable groove 701 is the same as the movement trajectory of the push rod 74.

[0056] Specifically, the arc-shaped movable groove 701 can drive the movement of the push rod 74 while closing the box cover 2, and guide the movement trajectory of the push rod 74 to improve the smoothness of the movement.

[0057] Reference Fig.10The shape of the first rubber ring 71 is inwardly concave, and the shape of the second rubber ring 72 is outwardly convex and fits with the inward concave shape of the first rubber ring 71.

[0058] Specifically, the first rubber ring 71 that is concave inwardly and the second rubber ring 72 that is convex outwardly can increase the connection area between the first rubber ring 71 and the second rubber ring 72, making the connection between the two tighter, thereby improving the sealing effect, extending the storage time of the account book page 4 and increasing the service life of the account book page 4. The remaining structure is the same as that of Example 2.

[0059] In summary, the working principle of the present invention is as follows: when the accountant encounters an account book page 4 of inappropriate size and needs to bring the two metal rings 31 closer to each other, the accountant pulls the U-shaped block 55 upward to increase the height of the U-shaped block 55 in the card slot 502, and uses the card slots 502 of different heights to limit the U-shaped block 55, thereby driving the two sides of the pull rope 54 to pull the adjustment plate 51 closer. At this time, the telescopic rod 52 and the adjustment spring 53 are squeezed, thereby driving the metal ring 31 on the adjustment plate 51 to move in the adjustment hole 301 on the binder 3, so that the two metal rings are When the two metal rings 31 need to be moved away from each other, the height of the U-shaped card block 55 in the card slot 502 is lowered. At this time, the pull rope 54 is straightened under the action of the telescopic rod 52 and the adjustment spring 53 until the two adjustment plates 51 move away from each other, thereby adjusting the position distance of the metal rings 31. When the account book page 4 is not needed and the folder needs to be saved or moved, the box cover 2 is closed. During the movement of the box cover 2, the squeezing spring 67 is pushed to move with the movement of the box cover 2, thereby driving the first connecting rod 63 to move in the same motion trajectory, driving the upper crossbar 63 to move. The rod 65 moves, driving the second connecting rod 64 to move, thereby driving the pressing plate 66 and the pressing cotton pad 8 to move. When the box cover 2 and the box body 1 are closed, the pressing cotton pad 8 also presses on the account book page 4 to squeeze and fix the account book page 4. At the same time, the push rod 74 slides in the movable groove 701 at the same frequency. The movement of the first connecting rod 63 can squeeze the push rod 74, so that the movable rod 73 moves horizontally on the slide groove 702, so that the other end of the push rod 74 slides in the movable groove 701 but is limited by the movable groove 701 until the other end of the push rod 74 enters When the movable groove 701 is at the bottom, the push rod 74 is squeezed toward the stopper 75 under the action of the return spring 76. Under the action of the round table on one side of the push rod 74 and the inclined block on the stopper 75, the push rod 74 moves further downward and is limited by the stopper 75. At this time, due to the downward movement of the push rod 74, the box cover 2 continues to move downward after being connected to the box body 1, so that the second rubber ring 72 on the box cover 2 and the first rubber ring 71 on the box body 1 are squeezed against each other, so that the protrusion on the second rubber ring 72 continues to squeeze the concave part on the first rubber ring 71, making the connection more compact.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An accounting book folder, comprising a box body (1), a box cover (2) arranged on one side of the box body (1), a binder (3) arranged on one side of the bottom of the box body (1), adjustment holes (301) arranged in an array on the binder (3), a metal ring (31) and an account book page (4) arranged on the binder (3), the metal ring (31) passing through the adjustment hole (301) and connected to the binder (3), characterized in that: The box body (1) further comprises an adjusting component (5) arranged in the middle of one side of the box body (1), the adjusting component (5) being located inside the binder (3) and fixedly connected to the metal ring (31), a fixing component (6) and a sealing component (7) being symmetrically arranged on both sides of the top of the box body (1), the fixing component (6) realizing the squeezing and fixing of the account book pages (4) by opening and closing the box cover (2), and the sealing component (7) strengthening the connection between the box cover (2) and the box body (1) by the movement of the fixing component (6); The adjustment assembly (5) comprises two adjustment plates (51) symmetrically slidably mounted in the binder (3), a metal ring (31) fixedly mounted on one side of the adjustment plate (51), an adjustment slot (501) provided on one side of the adjustment plate (51), a telescopic rod (52) with two ends respectively fixed on the inner walls of the two adjustment slots (501), the two adjustment plates (51) being connected via the telescopic rod (52), an adjustment spring (53) sleeved on the telescopic rod (52), and the two ends of the adjustment spring (53) being respectively fixedly connected to the inner walls of the two adjustment slots (501); A movable hole (302) is provided on one side of the binder (3), and a pull rope (54) is fixedly connected to one end of the two adjustment plates (51). The pull rope (54) passes through the adjustment hole (301) and is located outside the binder (3). By pulling the pull rope (54), the two adjustment plates (51) are driven to move relative to each other.

2. An accounting book folder according to claim 1, characterized in that: A central portion of one side of the box body (1) is provided with an array of card slots (502), a U-shaped card block (55) is installed at the middle position of the pull rope (54), the shape of the card slot (502) is adapted to the U-shaped card block (55), and is used to limit and fix the U-shaped card block (55).

3. An accounting book folder according to claim 2, characterized in that: The telescopic rod (52) comprises a telescopic outer cylinder (521) and telescopic inner rods (522) respectively telescopically mounted at both ends, protrusions (523) being mounted at both ends of the telescopic inner rod (522), and limiting grooves (503) for movement of the protrusions (523) being symmetrically provided on the inner wall of the telescopic outer cylinder (521).

4. The accounting book folder according to claim 3, characterized in that: The fixing assembly (6) comprises a mounting frame (61) fixedly mounted on one side of the box body (1), a first connecting rod (63) and a second connecting rod (64) respectively hingedly mounted on both sides of a lower cross bar (62), the top ends of the first connecting rod (63) and the second connecting rod (64) respectively hingedly mounted on both sides of an upper cross bar (65), and a pressure plate (66) is movably mounted on one end of the upper cross bar (65) via a universal ball. The first connecting rod (63) is connected to the middle of the box cover (2) via a compression spring (67), a straight rod (671) is installed in one end of the compression spring (67) close to the first connecting rod (63), and one end of the straight rod (671) is fixedly connected to one side of the middle part of the first connecting rod (63).

5. The accounting book folder according to claim 4, characterized in that: The pressing plate (66) is detachably provided with a pressing cotton pad (8), which is used to press and fix the account book.

6. The accounting book folder according to claim 1, characterized in that: The sealing assembly (7) comprises a first rubber ring (71) snap-fitted on the top surface of the box body (1), a second rubber ring (72) snap-fitted on the bottom surface of the box cover (2), a transverse slide groove (702) provided on one side of the bottom of the box cover (2), a movable rod (73) slidably installed in the slide groove (702), a push rod (74) fixedly installed at the end of the movable rod (73), a movable groove (701) provided on one side of the box body (1), a stopper (75) and a return spring (76) movably installed at the bottom of the movable groove (701), and the stopper (75) is movably installed at the bottom of the movable groove (701) through the return spring (76); Both ends of the push rod (74) are respectively provided with round tables, and the stopper (75) is provided with an inclined block used in conjunction with the round table. One end of the push rod (74) is limited by the first connecting rod (63) or the stopper (75) through sliding.

7. An accounting book folder according to claim 6, characterized in that: The shape of the movable groove (701) is an arc shape, and the arc shape of the movable groove (701) is the same as the movement trajectory of the push rod (74).

8. The accounting book folder according to claim 6, characterized in that: The shape of the first rubber ring (71) is an inwardly concave shape, and the shape of the second rubber ring (72) is an outwardly convex shape that matches the inward concave shape of the first rubber ring (71).

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