CN216089274U - Engineering audit case convenient to carry - Google Patents

Abstract

The utility model discloses a portable engineering audit box, which comprises a main box, wherein one end of the main box is hinged with a box cover through a damping hinge, a first clapboard is arranged in a cavity of the main box and symmetrically divides the cavity of the main box into a first storage cavity and a second storage cavity, a first metal paper pressing clamp is arranged on the side wall of the first storage cavity far away from the first clapboard, a second clapboard is arranged in the second storage cavity and divides the second storage cavity into a third storage cavity and a fourth storage cavity, a second metal paper pressing clamp is arranged on the third storage cavity along the plate wall of the first clapboard, three interlayers with clamping effects are arranged in the box cover, so that the problems that the files are often mixed together in the transportation process, are difficult to fix in the moving process and are not beneficial to the storage and the arrangement of the files are solved, meanwhile, when the file is taken out, the file is too complicated, the file is easy to drop and lose, and unnecessary troubles are increased.

Description

Engineering audit case convenient to carry

Technical Field

The utility model relates to the field of file storage boxes, in particular to a portable engineering audit box.

Background

Along with the increasingly developed traffic, people are working on business more and more, the requirement on portable storage box is also higher and higher, the shape of the existing file storage box is too single, the files can not be well classified and fixed, the existing file box basically places file files of various types and sizes in the same interlayer, the identification type and the searching are not convenient to carry out, the files are often mixed together in the transportation process, the files are difficult to fix in the movement process, the files are not beneficial to storage and arrangement, and meanwhile, when the files are taken out, the file box is too complicated, the files are easy to drop and lose, and unnecessary troubles are increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, provides the engineering audit box convenient to carry, and solves the problems in the background art.

The purpose of the utility model is realized by the following technical scheme: the portable engineering audit box is characterized by comprising a main box, wherein one end of the main box is hinged with a box cover through a damping hinge;

a first partition plate is arranged in a cavity of the main box and is vertical to the bottom of the main box, the cavity of the main box is symmetrically divided into a first storage cavity and a second storage cavity by the first partition plate, and a first metal paper pressing clamp is arranged on the side wall of the first storage cavity, which is far away from the first partition plate;

first metal is pressed paper and is pressed from both sides including first clamp plate, two first link and two first fixing bases, two first fixing base sets up keep away from in the first storage chamber on the lateral wall of first baffle, two first fixing base respectively through two first free bearings with the one end of first link is articulated, still be provided with first pair torsional spring on the axle center of first free bearing, a torsion arm of first pair torsional spring acts on first fixing base, another torsion arm acts on first link, the free end of first link is provided with the second free bearing, two it is provided with the metal pole to rotate on the second free bearing, the cover is equipped with hollow pipe on the metal pole, the pipe wall of hollow pipe with the axis department of first clamp plate upper surface is fixed, first clamp plate bottom surface is provided with first plastic slab.

Furthermore, a second partition plate is arranged in the second storage cavity and perpendicular to the middle of the first partition plate, the second partition plate is perpendicular to the bottom plate of the main box, the second partition plate divides the second storage cavity into a third storage cavity and a fourth storage cavity, and the third storage cavity is along a second metal paper pressing clamp arranged on the wall of the first partition plate.

Further, second metal is pressed from both sides paper and is included the second fixing base, the second fixing base sets up on the siding wall of first baffle, the interval is provided with two third free bearings on the second fixing base, it has the second link to articulate on the third free bearing, still be provided with the two torsional springs of second on the axle center of third free bearing, a torsion arm of the two torsional springs of second acts on the third free bearing, another torsion arm acts on the second link, the free end of second link is provided with the fourth free bearing, it has the second clamp plate to articulate on the fourth free bearing, the four corners of second clamp plate is the fillet, second clamp plate bottom surface is provided with the second plastic slab.

Furthermore, a canvas sheet is arranged on the fourth storage cavity in a matched mode, one edge of the canvas sheet is fixed with the second partition plate, connecting cloth is fixed on the other edges of the canvas sheet, the canvas sheet is connected with the connecting cloth through a first zipper, a window is formed in the middle of the canvas sheet, and a transparent PVC plate is arranged on the window in a sealed mode.

Further, be provided with first PET board in the cavity of case lid, the base of first PET board with the case lid bottom plate is close to one side of damping hinge is connected through first elastic cord, the both sides limit of first PET board all through first elastic cord with the bottom plate of case lid is connected.

Furthermore, one side of the first PET plate, which is far away from the box cover bottom plate, is provided with a second PET plate, and the bottom edge and the two side edges of the second PET plate are respectively connected with the bottom edge and the two side edges of the first PET plate through second elastic bands.

Furthermore, one side, far away from the first PET plate, of the second PET plate is provided with an elastic mesh belt, the bottom edge and the two side edges of the elastic mesh belt are respectively connected with the bottom edge and the two side edges of the second PET plate, and the top edge of the elastic mesh belt is connected with the top edge of the second PET plate through a second zipper.

Furthermore, the main box is far away from be provided with the handle on the lateral wall of the one end of damping hinge, the both ends of handle all with the main box is articulated, the handle with all the cooperation is provided with first torsion spring in two articulated fifth free bearings of main box, a torsion arm of first torsion spring acts on fifth free bearing, another torsion arm acts on the handle.

Furthermore, the side wall of one end, far away from the damping hinge, of the main box is provided with two lock bodies of the coded lock at intervals, and the two lock bodies are located on two sides of the handle.

Furthermore, two lock pins of a coded lock are arranged on the side wall of one end, far away from the damping hinge, of the box cover at intervals, the lock pins are matched with the lock body, the two lock pins are hinged with the box cover, a second torsion spring is arranged in a sixth hinge seat, hinged with the box cover, of the lock pins in a matched mode, a torsion arm of the second torsion spring acts on the sixth hinge seat, and the other torsion arm acts on the lock pins.

The utility model has the beneficial effects that:

1. the first storage cavity is mainly used for storing documents or books with the sizes from A to A, four groups of first double torsion springs are indirectly acted with the first pressing plate through the first connecting frames, the first pressing plate can tightly press the documents, the first pressing plate is hinged with the second hinged supports of the two first connecting frames and rotates around the first connecting frames, the angles of the first pressing plate and the first connecting frames can be adjusted, the documents with different thicknesses and the documents with different quantities can be adapted, the first pressing plate is a round angle and can prevent the documents or people from being scratched, and the first plastic plate arranged on the bottom surface of the first pressing plate can prevent the documents from sliding to a certain extent.

2. The third storage cavity is mainly used for storing a plurality of files or books with the size of A and below, two groups of second double-torsion springs act on the second pressing plate through the second connecting frame, the second pressing plate can tightly press the files, the files are prevented from sliding in the box in a disordered manner, the second pressing plate is hinged with the second connecting frame, the angle between the second pressing plate and the second connecting frame can be adjusted, the files can adapt to files with different thicknesses, and the files with different thicknesses can be prevented from being scratched by the second pressing plate for round corners, and the files can be prevented from sliding to a certain extent by the second plastic plate arranged on the bottom surface of the second pressing plate.

3. The fourth storage cavity is mainly used for storing small objects with unfixed shapes and sizes, such as various pens, seals, rulers and other stationeries used in engineering auditing offices, the small objects are kept in the fourth storage cavity through the first zipper, and the small objects can be taken or stored by opening the first zipper and closing the first zipper after use.

4. Three edges of the first PET board are connected with a bottom plate of the box cover through first elastic bands, an opening is formed in the upper end of the first PET board, files ranging from A to A can be stored, the first elastic bands have the effect of tensioning the files, the bottom edge and two side edges of the second PET board are connected with the first PET board through second elastic bands, the interlayer formed by the second PET board and the first PET board can also store the files ranging from A to A, the second elastic bands have elasticity, and the files in the interlayer can be compressed.

5. The elastic mesh belt is also provided with two interlayers which are compressed to a certain degree, the elastic mesh belt is matched with the second PET plate to form the interlayer, and important larger files or certificates and the like can be stored in the interlayer by opening the second zipper.

Drawings

FIG. 1 is a schematic illustration of a portable engineering audit box according to the present invention;

FIG. 2 is a schematic diagram of a portable engineering audit box main box according to the present invention;

FIG. 3 is a schematic diagram of a portable engineering audit box cover according to the present invention;

in the figure, 1, a main box, 2, a damping hinge, 3, a first clapboard, 4, a first storage cavity, 5, a second storage cavity, 6, a first metal paper pressing clip, 7, a first pressing plate, 8, a first connecting frame, 9, a first fixed seat, 10, a first hinge seat, 11, a first double torsion spring, 12, a second hinge seat, 13, a metal rod, 14, a hollow round tube, 15, a first plastic plate, 16, a second clapboard, 17, a third storage cavity, 18, a fourth storage cavity, 19, a second metal paper pressing clip, 20, a second fixed seat, 21, a third hinge seat, 22, a second connecting frame, 23, a second double torsion spring, 24, a fourth hinge seat, 25, a second pressing plate, 26, a second plastic plate, 27, a canvas sheet, 28, a PVC plate, 29, a first PET plate, 30, a box cover, 31, a first elastic band, 32, a second PET plate, 33, a second elastic band, 34, an elastic band, 35. a second zipper, 36, a handle, 37, a fifth hinge base, 38, a lock body, 39, a lock pin, 40 and a sixth hinge base.

Detailed Description

The technical solutions of the present invention are described in further detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following description, and the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the indicated devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed; the types of the electrical appliances provided in the present invention are only used for reference, and for those skilled in the art, different types of electrical appliances with the same function can be replaced according to the actual use condition, and for those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.

Referring to fig. 1 to 3, the present invention provides a technical solution: as shown in fig. 1, the portable engineering audit box is characterized by comprising a main box 1, wherein one end of the main box 1 is hinged with a box cover 30 through a damping hinge 2;

a first partition plate 3 is arranged in a cavity of the main box 1, the first partition plate 3 is vertical to the bottom of the main box 1, the cavity of the main box 1 is symmetrically divided into a first storage cavity 4 and a second storage cavity 5 by the first partition plate 3, and a first metal paper pressing clamp 6 is arranged on the side wall of the first storage cavity 4 far away from the first partition plate 3;

the first metal paper pressing clamp 6 comprises a first pressing plate 7, two first connecting frames 8 and two first fixing seats 9, wherein the two first fixing seats 9 are arranged on the side wall, far away from the first partition plate 3, in the first storage cavity 4, the two first fixing seats 9 are respectively hinged with one end of each first connecting frame 8 through two first hinge seats 10, a first double torsion spring 11 is further arranged on the shaft center of each first hinge seat 10, one torsion arm of each first double torsion spring 11 acts on each first fixing seat 9, the other torsion arm acts on each first connecting frame 8, a second hinge seat 12 is arranged at the free end of each first connecting frame 8, metal rods 13 are rotatably arranged on the two second hinge seats 12, hollow circular tubes 14 are sleeved on the metal rods 13, the tube walls of the hollow circular tubes 14 are fixed to the central axis of the upper surfaces of the first pressing plate 7, and first plastic plates 15 are arranged on the bottom surfaces of the first pressing plates 7; as shown in fig. 2, in the specific implementation, the main box 1 is hinged to the box cover 2, the damping hinge 2 can make the box cover 30 have a certain resistance when opening or closing, so as not to cause a hand injury or a large impact noise due to too fast opening and closing, and at the same time, can make the box cover 30 and the main box 1 keep a certain angle, so as to facilitate the taking and placing of documents, the first storage cavity 4 is mainly used for storing documents or books with the size of A3 to a4, when needing to store, the first pressing plate 7 of the first metal paper pressing clamp 6 is lifted, the first connecting frame 8 rotates around the first hinge base 10, when the first pressing plate 7 is lifted up to a certain angle, the documents can be placed into the first storage cavity 4, then the first pressing plate 7 is lightly put, so that the first pressing plate 7 presses the stored documents, and the first double torsion springs 11 are in total four groups and indirectly act with the first pressing plate 7 through the first connecting frame 8, so that the first pressing plate 7 can tightly press the documents, first clamp plate 7 is articulated with the second free bearing 12 of two first link hangers 8, first clamp plate 7 cooperates through metal pole 13 on hollow pipe 14 and the second free bearing 12, rotate around first link hanger 8, and then can adjust the angle of first clamp plate 7 and first link hanger 8, and then enable the file that adapts to different thickness, and the file of equidimension, first clamp plate 7 can prevent scratch file or people for the fillet, first plastic slab 15 that first clamp plate 7 bottom surface set up can prevent to a certain extent that the file from sliding.

A second clapboard 16 is arranged in the second storage cavity 5, the second clapboard 16 is vertical to the middle part of the first clapboard 3, the second clapboard 16 is vertical to the bottom plate of the main box 1, the second clapboard 16 divides the second storage cavity 5 into a third storage cavity 17 and a fourth storage cavity 18, the third storage cavity 17 is provided with a second metal paper pressing clamp 19 along the plate wall of the first clapboard 3, the second metal paper pressing clamp 19 comprises a second fixed seat 20, the second fixed seat 20 is arranged on the plate wall of the first clapboard 3, the second fixed seat 20 is provided with two third hinged seats 21 at intervals, the third hinged seat 21 is hinged with a second connecting frame 22, the axle center of the third hinged seat 21 is also provided with a second double torsion spring 23, one torsion arm of the second double torsion spring 23 acts on the third hinged seat 21, the other torsion arm acts on the second connecting frame 22, the free end of the second connecting frame 22 is provided with a fourth hinged seat 24, the fourth hinged seat 24 is hinged with a second pressing plate 25, four corners of the second pressing plate 25 are round corners, and a second plastic plate 26 is arranged on the bottom surface of the second pressing plate 25; as shown in fig. 2, in the specific implementation, the third storage cavity 17 mainly stores a number of documents or books with a size of a5 or less, when storage is needed, the second metal paper pressing clip 19 is lifted to lift the second pressing plate 25, then the documents are placed in the second storage cavity, the second pressing plate 25 presses the documents by releasing the hands, two sets of second double torsion springs 23 act on the second pressing plate 25 through the second connecting frame 22, so that the second pressing plate 25 can tightly press the documents to prevent the documents from sliding disorderly in the box, the second pressing plate 25 is hinged to the second connecting frame 22 to adjust the angles of the second pressing plate 25 and the second connecting frame 22, so as to adapt to documents with different thicknesses and documents with different sizes, the second pressing plate 25 is a round corner to prevent the documents from being scratched or by people, and the second plastic plate 26 disposed on the bottom surface of the second pressing plate 25 can prevent the documents from sliding to a certain extent.

The fourth storage cavity 18 is provided with a canvas sheet 27 in a matching way, one side of the canvas sheet 27 is fixed with the second clapboard 16, the other sides are fixed with connecting cloth, the canvas sheet 27 is connected with the connecting cloth through a first zipper, the middle part of the canvas sheet 27 is provided with a window, and a transparent PVC plate 28 is sealed and arranged on the window; as shown in fig. 2, in the specific implementation, the fourth storage cavity 18 mainly stores some small objects with different shapes and sizes, such as various pens, stamps, rulers and other stationery used in engineering auditing work, and the small objects are kept in the fourth storage cavity 18 through the first zipper, and can be taken or stored by opening the first zipper, and the first zipper is closed after use.

A first PET plate 29 is arranged in a cavity of the box cover 30, the bottom edge of the first PET plate 29 is connected with one edge of a bottom plate of the box cover 30, which is close to the damping hinge 2, through a first elastic band 31, two side edges of the first PET plate 29 are connected with the bottom plate of the box cover 30 through the first elastic band 31, a second PET plate 32 is arranged on one side of the first PET plate 29, which is far away from the bottom plate of the box cover 30, and the bottom edge and the two side edges of the second PET plate 32 are respectively connected with the bottom edge and the two side edges of the first PET plate 29 through second elastic bands 33; as shown in fig. 3, in specific implementation, three sides of the first PET plate 29 are connected to the bottom plate of the box cover 30 through the first elastic band 31, an opening is formed in the upper end of the first PET plate 29, documents in a range from a1 to a2 can be stored, the first elastic band 31 has a function of tensioning the documents, similarly, the bottom edge and two sides of the second PET plate 32 are connected to the first PET plate 29 through the second elastic band 33, the document in a range from a1 to a2 can also be stored in an interlayer formed by the second PET plate 32 and the first PET plate 29, and the second elastic band 33 has elasticity and can also compress the documents in the interlayer.

An elastic mesh belt 34 is arranged on one side of the second PET plate 32 far away from the first PET plate 29, the bottom edge and the two side edges of the elastic mesh belt 34 are respectively connected with the bottom edge and the two side edges of the second PET plate 32, and the top edge of the elastic mesh belt 34 is connected with the top edge of the second PET plate 32 through a second zipper 35; as shown in fig. 3, in the specific implementation, the elastic mesh belt 34 also has two interlayers that are compressed to some extent, and the elastic mesh belt 34 and the second PET plate 32 cooperate to form an interlayer, so that some important larger documents, certificates, etc. can be stored in the interlayer by opening the second zipper 35.

A handle 36 is arranged on the side wall of one end of the main box 1 far away from the damping hinge 2, two ends of the handle 36 are hinged with the main box 1, a first torsion spring is arranged in each of two fifth hinged supports 37 hinged with the main box 1 by matching, a torsion arm of the first torsion spring acts on the fifth hinged support 37, the other torsion arm acts on the handle 36, two lock bodies 38 of coded locks are arranged on the side wall of one end of the main box 1 far away from the damping hinge 2 at intervals, the two lock bodies 38 are arranged on two sides of the handle 36, two lock pins 39 of the coded locks are arranged on the side wall of one end of the box cover 30 far away from the damping hinge 2 at intervals, the lock pins 39 are matched with the lock bodies 38, the two lock pins 39 are hinged with the box cover 30, a second torsion spring is arranged in a sixth hinged support 40 of the lock pins 39 and the box cover 30 by matching, a torsion arm of the second torsion spring acts on the sixth hinged support 40, and the other torsion arm acts on the lock pins 39; as shown in fig. 1-3, in the specific implementation, the handle 36 on the main box 1 can be conveniently moved and taken out of the whole box, the handle 36 is hinged to the main box 1 to adapt to the swinging of the box body in different degrees, the fifth hinge base 37 of the handle 36 hinged to the box body is internally provided with a first torsion spring, so that the handle 36 can be tightly attached to the box body when not in use, the random shaking and the noise are avoided, the coded lock can protect the file from being easily taken by others, the safety of the file is protected to a certain degree, the lock pin 39 is hinged to the box cover 30, and the sixth hinge base 40 is internally provided with a second torsion spring, so that the lock pin 39 can be opened by the coded lock, and automatically bounces when being opened, and is automatically separated from the lock body 38.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the utility model is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The portable engineering audit box is characterized by comprising a main box (1), wherein one end of the main box (1) is hinged with a box cover (30) through a damping hinge (2);

a first partition plate (3) is arranged in a cavity of the main box (1), the first partition plate (3) is perpendicular to the bottom of the main box (1), the cavity of the main box (1) is symmetrically divided into a first storage cavity (4) and a second storage cavity (5) by the first partition plate (3), and a first metal paper pressing clamp (6) is arranged on the side wall, away from the first partition plate (3), of the first storage cavity (4);

the first metal paper pressing clamp (6) comprises a first pressing plate (7), two first connecting frames (8) and two first fixing seats (9), the two first fixing seats (9) are arranged on the side wall, far away from the first partition plate (3), of the first storage cavity (4), the two first fixing seats (9) are hinged with one end of each first connecting frame (8) through two first hinged supports (10), a first double torsion spring (11) is further arranged on the axis of each first hinged support (10), a torsion arm of the first double torsion spring (11) acts on the first fixing seats (9), another torsion arm acts on the first connecting frames (8), the free end of each first connecting frame (8) is provided with a second hinged support (12), a metal rod (13) is arranged on each second hinged support (12) in a rotating mode, and a hollow circular tube (14) is sleeved on each metal rod (13), the pipe wall of the hollow round pipe (14) is fixed to the central axis of the upper surface of the first pressing plate (7), and a first plastic plate (15) is arranged on the bottom surface of the first pressing plate (7).

2. The engineering audit box convenient to carry according to claim 1, wherein a second partition plate (16) is arranged in the second storage cavity (5), the second partition plate (16) is perpendicular to the middle of the first partition plate (3), the second partition plate (16) is perpendicular to the bottom plate of the main box (1), the second partition plate (16) divides the second storage cavity (5) into a third storage cavity (17) and a fourth storage cavity (18), and the third storage cavity (17) is provided with a second metal paper pressing clamp (19) along the plate wall of the first partition plate (3).

3. The engineering audit box convenient to carry according to claim 2, wherein the second metal paper pressing clip (19) comprises a second fixed seat (20), the second fixed seat (20) is arranged on the wall of the first partition board (3), two third hinged seats (21) are arranged on the second fixed seat (20) at intervals, a second connecting frame (22) is hinged on the third hinged seats (21), a second double torsion spring (23) is further arranged on the axis of the third hinged seats (21), one torsion arm of the second double torsion spring (23) acts on the third hinged seats (21), the other torsion arm acts on the second connecting frame (22), a fourth hinged seat (24) is arranged at the free end of the second connecting frame (22), a second pressing plate (25) is hinged on the fourth hinged seat (24), and four corners of the second pressing plate (25) are round corners, and a second plastic plate (26) is arranged on the bottom surface of the second pressing plate (25).

4. The portable engineering audit box according to claim 2, wherein a canvas sheet (27) is fittingly arranged on the fourth storage cavity (18), one side of the canvas sheet (27) is fixed with the second partition plate (16), the other sides are fixed with connecting cloth, the canvas sheet (27) is connected with the connecting cloth through a first zipper, a window is arranged in the middle of the canvas sheet (27), and a transparent PVC plate (28) is hermetically arranged on the window.

5. The engineering audit box convenient to carry according to claim 1, wherein a first PET plate (29) is arranged in a cavity of the box cover (30), the bottom edge of the first PET plate (29) is connected with one edge of a bottom plate of the box cover (30) close to the damping hinge (2) through a first elastic band (31), and two side edges of the first PET plate (29) are connected with the bottom plate of the box cover (30) through the first elastic band (31).

6. The portable engineering audit box according to claim 5, wherein a second PET plate (32) is arranged on one side of the first PET plate (29) far away from the bottom plate of the box cover (30), and the bottom edge and the two side edges of the second PET plate (32) are respectively connected with the bottom edge and the two side edges of the first PET plate (29) through second elastic bands (33).

7. A portable engineering audit box according to claim 6 wherein, the side of the second PET plate (32) far from the first PET plate (29) is provided with an elastic net belt (34), the bottom edge and two side edges of the elastic net belt (34) are respectively connected with the bottom edge and two side edges of the second PET plate (32), and the top edge of the elastic net belt (34) is connected with the top edge of the second PET plate (32) through a second zipper (35).

8. A portable engineering audit box according to claim 1, characterized in that a handle (36) is arranged on the side wall of one end of the main box (1) far away from the damping hinge (2), both ends of the handle (36) are hinged with the main box (1), a first torsion spring is arranged in each of two fifth hinge seats (37) of the handle (36) hinged with the main box (1), one torsion arm of the first torsion spring acts on the fifth hinge seat (37), and the other torsion arm acts on the handle (36).

9. A portable engineering audit box according to claim 8 wherein, the side wall of the main box (1) far away from the damping hinge (2) is provided with two lock bodies (38) of the combination lock at intervals, and the two lock bodies (38) are positioned at two sides of the handle (36).

10. A portable engineering audit box according to claim 9, wherein the side wall of the end of the box cover (30) far away from the damping hinge (2) is provided with two lock pins (39) of a combination lock at intervals, the lock pins (39) are matched with the lock body (38), the two lock pins (39) are hinged with the box cover (30), a second torsion spring is matched and arranged in a sixth hinge seat (40) of the lock pins (39) hinged with the box cover (30), one torsion arm of the second torsion spring acts on the sixth hinge seat (40), and the other torsion arm acts on the lock pins (39).

Images