CN114652070A - Plane design drawing tool pin-connected panel storage device - Google Patents

Abstract

The invention belongs to the technical field of storage devices, in particular to an assembled storage device for graphic design drawing tools, comprising a storage box, a lock ring, a cross partition, a box cover, a handle, a lock buckle and a middle partition. On the front of the storage box, the lock is fixed on one side of the box cover, and the lock ring and the lock are fastened together. The box cover of the present invention can be used as a drawing board, which further saves the storage box. Storage space and drawing board costs, and the box cover is set to a larger style, which further improves the adaptability of the device and expands the scope of use of the device. The design of the drawer can make the loading and unloading of tools more convenient, which further saves the draughtsman. The drawing time improves the drawing efficiency. The two pins can be inserted into the two sets of pin holes respectively, which further fixes the box cover, which is beneficial for the user to make the box cover more stable when drawing on the box cover, and further improves the device's performance. practicality.

Description

An assembled storage device for graphic design drawing tools

technical field

The invention belongs to the technical field of storage devices, and in particular relates to an assembled storage device for graphic design drawing tools.

Background technique

On a technical level, drawing or painting is a practice of using a surface as a supporting surface and then adding color on it. Those surfaces can be paper or cloth, and the tools for adding color can be brushes or brushes. , sponge or cloth strip, etc., you can also use the software to paint. At the level of artistic terminology, the meaning of painting also includes the use of this artistic behavior plus graphics, composition and other aesthetic methods to achieve the concept and meaning that the painter wishes to express. Painting accounts for the majority of fine arts.

At present, in the learning process of art drawing, students are often led by art teachers to sketch outdoors. Because drawing requires many tools, it is not easy to organize and carry, so students usually use drawing storage boxes, and the drawing storage boxes The box cover can be used as a drawing board, but the structure of the drawing storage box in the prior art is relatively simple, the fixing effect of the box cover on it is not good, and the box cover is easily bent and damaged when students are painting, which is not conducive to normal drawing work. To this end, the present invention provides an assembled storage device for graphic design drawing tools.

SUMMARY OF THE INVENTION

In order to solve the above problems existing in the prior art, the present invention provides an assembled storage device for plane design drawing tools, which has the characteristics of being fixable and adjustable.

In order to achieve the above purpose, the present invention provides the following technical solutions: a flat design drawing tool assembled storage device, including a storage box, a lock ring, a cross partition, a box cover, a handle, a lock and a middle partition, the lock The ring is installed on the front of the storage box, the lock is fixed on one side of the box cover, the lock ring and the lock are fastened together, and the box cover is slidably arranged on the top of the storage box , the handle is fixed on the top of the box cover, after the lock ring and the lock are engaged, the storage box can be lifted by the handle, and the middle partition is fixed on the In the middle of the storage box, the middle partition divides the storage box into upper and lower parts, the cross partition is fixed on the top of the middle partition, and the cross partition divides the storage box. The inner upper layer is divided into four parts, the left and right sides of the storage box are provided with drawer openings, and one side of the drawer opening is slidably provided with a drawer inside the storage box.

As a preferred technical solution of the present invention, the left and right sides of the storage box are symmetrically provided with first fixing grooves.

As a preferred technical solution of the present invention, the two drawers are symmetrically arranged in the middle and lower part of the inner side of the storage box, and the inner sides of the two drawers are fixed with a inline partition, and the inline partition separates the drawers The interior is divided into two parts, the bottoms of the two drawers are symmetrically slidable and fixed with first slide rails, the bottoms of the two first slide rails are fixed on the inner side of the bottom of the storage box, and the two drawers pass through the two The first slide rail slides inside the storage box, and a handle is fixed on the right side of the two drawers, and the handle can pull the drawer.

As a preferred technical solution of the present invention, the upper ends of the two drawers on the same side of the handle are symmetrically provided with second fixing grooves, and the two second fixing grooves and the two first fixing grooves are in the same position. The two sides of the storage box are on the same horizontal plane and are in a co-circular relationship, and the front faces of the two drawers are provided with card holes near the rear ends.

As a preferred technical solution of the present invention, the storage device further includes:

a moving rod, the two moving rods are symmetrically fixed on the left and right ends of the box cover;

a sliding block, which transversely penetrates the lower end of the moving rod and can rotate freely;

The second sliding rail, two of the second sliding rails are symmetrically fixed on the top ends of the left and right sides of the storage box, the second sliding rail has a sliding hole, and the sliding block is embedded in the sliding hole to make the moving rod It is free to rotate and has horizontal movement degrees of freedom.

As a preferred technical solution of the present invention, one end of the sliding block away from the second sliding rail has a blocking piece.

As a preferred technical solution of the present invention, the storage device further includes:

pin holes, two sets of said pin holes are symmetrically opened at the top ends of the left and right sides of the storage box;

A plug, the tops of the two plugs are fixed with a pin cover, the tops of the two plugs are fixed with a pull ring, and the two plugs are surrounded by a spiral film that is attached around and stretched along the length of the plug, Two of the latches can be tightly inserted into the two sets of the pin holes through the spiral film, and are inserted symmetrically through the two latches to fix the box cover, and both the latches have the ability to move. degrees of freedom.

As a preferred technical solution of the present invention, the storage device further includes:

Pins, two of the pins are symmetrically arranged on both sides of the front of the storage box, the head ends of the two pins are fixed with a first spring and a pull lug, and the head ends of the first springs are fixed at On one side of the pull ear, the tail end of the first spring is fixed on the front face of the storage box, and the tail ends of the two pin columns are rotatably arranged with pin wheels, and the pin wheels are in contact with the front face of the drawer. Passively sliding of the drawer can roll horizontally along the contact surface of the drawer, the two pin wheels and the two card holes opened at the front of the two drawers near the rear end are on the same horizontal line, and The two pin wheels are in one-to-one correspondence with the two snap holes, and the pin wheels can be passively rolled into the corresponding snap holes to limit and fix the two drawers.

As a preferred technical solution of the present invention, the storage device further includes:

A sliding rod, two sliding rods are symmetrically arranged on the two first fixing grooves on the left and right sides of the storage box, and sliding sheets are arranged in the middle of the two sliding rods. A dome block is fixed symmetrically on one side of the sheet close to the sliding rod, and a knob is fixed at one end of the two sliding rods away from the sliding sheet, and the two sliding rods are located between the sliding sheet and the knob. A second spring is fixed between them, the sliding piece can slide freely along the surface of the sliding rod by the elastic force of the second spring, and has a degree of freedom of movement in the horizontal direction, and the two sliding rods can pass through the sliding plate. The knob fixed on the top is free to rotate at the first fixing groove and has a fixed-point rotation degree of freedom. The surface slides to the surface of the second fixing groove for fixing and engaging the drawer.

Compared with the prior art, the beneficial effects of the present invention are: in the present invention, the box cover can be used as a drawing board, and the user does not need to carry the drawing board by himself when using the device, which further saves the storage space of the storage box and the drawing board. Cost, and the box cover is set to a larger style, which is more conducive to users to use different sizes of drawing paper for drawing, which further improves the adaptability of the device and expands the use range of the device. It is more convenient to take, which further saves the drawing time of the drafter and improves the drawing efficiency. The two pins can be inserted into the two sets of pin holes respectively, which further fixes the box cover, which is beneficial to the user when drawing on the box cover. The cover is more stable, and no bending damage occurs, which further improves the practicability of the device and expands the use range of the device.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the side structure schematic diagram in the present invention;

3 is a schematic diagram of a shaft side effect structure in the present invention;

Fig. 4 is the partial structure schematic diagram in the present invention;

Fig. 5 is the enlarged structural schematic diagram of A place in Fig. 3 in the present invention;

Fig. 6 is the enlarged structural schematic diagram of B place in Fig. 3 in the present invention;

Fig. 7 is the enlarged structural schematic diagram of the C place in Fig. 3 in the present invention;

In the picture: 1. Storage box; 2. Lock ring; 3. Cross partition; 4. Box cover; 5. Handle; 6. Lock; 7. Middle partition; 8. Drawer opening; 9. First fixing Slot; 10, drawer; 11, in-line partition; 12, handle; 13, second fixing slot; 14, first slide rail; 15, card hole; 100, moving rod; 101, slider; 102, blocking Sheet; 103, second slide rail; 201, pin hole; 202, latch; 203, pull ring; 204, pin cover; 205, spiral film; 301, pin post; 302, pin wheel; 303, first spring; 304 401, sliding rod; 402, dome block; 403, sliding piece; 404, second spring; 405, knob.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example

Please refer to FIGS. 1 to 7 , the present invention provides the following technical solutions: an assembled storage device for graphic design drawing tools, comprising a storage box 1, a lock ring 2, a cross partition 3, a box cover 4, a handle 5, a lock buckle 6 and the middle partition 7, the lock ring 2 is installed on the front of the storage box 1, the lock buckle 6 is fixed on the side of the box cover 4, the lock ring 2 and the lock buckle 6 are engaged, and the box cover 4 is slidably arranged on the storage box 1 The top of the box, the handle 5 is fixed on the top of the box cover 4, after the lock ring 2 and the lock 6 are buckled, the storage box 1 can be lifted by the handle 5, and the middle partition 7 is fixed in the middle of the storage box 1. , the middle partition 7 divides the interior of the storage box 1 into upper and lower parts, the cross partition 3 is fixed on the top of the middle partition 7, and the cross partition 3 divides the inner upper layer of the storage box 1 into four parts, the left and right two parts of the storage box 1 A drawer opening 8 is provided on the side, and a drawer 10 is slidably arranged inside the storage box 1 on one side of the drawer opening 8. In this embodiment, the box cover 4 can be used as a drawing board. When using this device, the user does not need to carry a drawing by himself. It further saves the storage space of the storage box 1 and the cost of the drawing board, and the box cover 4 is set to a larger style, which is more beneficial for users to use different sizes of drawing paper for drawing, which further improves the adaptability and expansion of the device. the range of use of the device.

Specifically, as can be seen from FIG. 2 , first fixing grooves 9 are symmetrically opened on the left and right sides of the storage box 1 .

Specifically, as can be seen from FIG. 3 , the two drawers 10 are symmetrically arranged in the middle and lower part of the inner side of the storage box 1 , and the inner side of the two drawers 10 is fixed with a inline partition 11 , and the inline partition 11 divides the interior of the drawer 10 into two parts , the bottoms of the two drawers 10 are symmetrically slidably fixed with a first sliding rail 14 , the bottoms of the two first sliding rails 14 are fixed on the inner side of the bottom of the storage box 1 , and the two drawers 10 are connected to the storage box 1 through the two first sliding rails 14 The inside slides, and the two drawers 10 are fixed with a handle 12 on the right side. The handle 12 can pull the drawer 10. In this embodiment, the design of the drawer 10 can make the tool more convenient to install and take out. When in use, the user can Opening the drawer for drawing makes it easier to get the tools needed for drawing when drawing, further saving the drawing time of the drawer and improving the drawing efficiency.

Specifically, as can be seen from FIG. 4 , the upper ends of the two drawers 10 on the same side of the handle 12 are symmetrically provided with second fixing grooves 13 . The two side surfaces are on the same horizontal plane and are in a co-circular relationship, and the front surfaces of the two drawers 10 are provided with clamping holes 15 near the rear ends.

Specifically, as can be seen from FIG. 1 , the moving rod 100 and the two moving rods 100 are symmetrically fixed on the left and right ends of the box cover 4 ;

The sliding block 101, the sliding block 101 transversely penetrates the lower end of the moving rod 100 and can rotate freely;

The second slide rail 103, the two second slide rails 103 are symmetrically fixed on the top ends of the left and right sides of the storage box 1, the second slide rail 103 has a sliding hole, and the slider 101 is embedded in the sliding hole so that the moving rod 100 can be freely It rotates and has the degree of freedom of movement in the horizontal direction. In this embodiment, through this setting, the box cover 4 can be made. After opening, it can move back and forth, thereby changing the position of the box cover 4 and shortening the distance between the user and the box cover 4, which is beneficial to the user's drawing work more convenient. The box cover 4 is moved horizontally, and the distance of the box cover 4 can be adjusted to reach the distance suitable for the user.

Specifically, as can be seen from FIG. 1 , the end of the slider 101 away from the second slide rail 103 has a blocking piece 102 . In this embodiment, the blocking piece 102 can play a certain blocking role on the moving rod 100 to prevent movement. The rod 100 is dislodged from the slider 101 .

Specifically, it can be seen from Fig. 3 and Fig. 5 that the pin holes 201 and the two groups of pin holes 201 are symmetrically opened at the top ends of the left and right sides of the storage box 1;

The latch 202, the top of the two latches 202 is fixed with a pin cover 204, the top of the two latches 204 is fixed with a pull ring 203, the two latches 202 are surrounded by a spiral film 205 that is attached around and stretched along the length of the latch 202, The two pins 202 can be tightly inserted into the two sets of pin holes 201 through the spiral film 205, and are inserted symmetrically through the two pins 202 to fix the box cover 4, and the two pins 202 have a degree of freedom of movement. This embodiment , the two pins 202 can be respectively inserted into the two groups of pin holes 201 to further fix the box cover 4, which is beneficial for the user to make the box cover 4 more stable when drawing on the box cover 4, and there will be no bending damage, etc. In some cases, because the two pins 202 are independent, the two pins 202 can be put into the storage box 1 when the device is not in use, and a plurality of pin holes 201 are provided at the top of the left and right sides of the storage box 1, which makes it possible to arbitrarily The position of the box cover 4 is adjusted, which is more conducive to the use of drafters with different usage habits, which further improves the practicability of the device and expands the use range of the device. When using, open the box cover 4 and take out two from the storage box 1. The latches 202 can be fixed by inserting the latches 202 into the symmetrical pin holes 201 on both sides one by one after moving the box cover 4 to an adaptive position, stabilize the box cover.

Specifically, as can be seen from Figures 4 and 6, the pin 301 and the two pins 301 are symmetrically arranged on both sides of the front of the storage box 1, and the first springs 303 and the pulley are fixed at the head ends of the two pins 301. The lug 304, the head end of the first spring 303 is fixed on one side of the pull lug 304, the tail end of the first spring 303 is fixed on the front of the storage box 1, the tail ends of the two pins 301 are rotated and arranged with a pin wheel 302, and the pin wheel 302 In contact with the front of the drawer 10 and passively sliding through the drawer 10, it can roll horizontally along the contact surface of the drawer 10. The two pin wheels 302 and the two card holes 15 opened at the front of the two drawers 10 near the rear end are on the same horizontal line. , and the two pin wheels 302 are in one-to-one correspondence with the two card holes 15, and the pin wheels 302 can be passively rolled into their corresponding card holes 15 to limit and fix the two drawers 10. The setting of 301 and the clamping hole 15 can limit the position of the drawer 10. When the drawer 10 is being pulled out, the pin 301 slides passively. When the drawer 10 is pulled out to a certain extent, the pin 301 will slide into the clamping hole. 15, thereby fixing the drawer 10, preventing the drawer 10 from being pulled out of the storage box 1 and falling, resulting in damage to the drawing tool placed in the drawer 10, and the pin 301 is on a surface of the drawer 10 through the pin wheel 302 set on it. Sliding is performed, thereby reducing the sliding friction, and further protecting the drawer 10 from damage during the extraction process. During use, the drawer 10 is pulled out horizontally through the handle 12. When the drawer 10 is pulled out to a certain extent, the pin 301 will slide into the card The drawer 10 is automatically fixed in the hole 15. To withdraw the drawer 10, pull the puller 304 with one hand, then push the drawer 10 back a certain distance, and then release the puller 304 and continue to push the drawer 10 to the original position. .

Specifically, as can be seen from Fig. 2, Fig. 4 and Fig. 7, the sliding rod 401, the two sliding rods 401 are symmetrically arranged on the two first fixing grooves 9 on the left and right sides of the storage box 1, and the two sliding rods 401 are symmetrically rotated. A sliding sheet 403 is arranged horizontally in the middle of the rod 401. A dome block 402 is fixed symmetrically on one side of the sliding sheet 403 close to the sliding rod 401. A knob 405 is fixed at one end of the two sliding rods 401 away from the sliding sheet 403. The rod 401 is fixed with a second spring 404 between the sliding sheet 403 and the knob 405. The sliding sheet 403 can freely slide along the surface of the sliding rod 401 by the elastic force of the second spring 404 and has a degree of freedom of movement in the horizontal direction. Each sliding rod 401 can rotate freely at the first fixing slot 9 through the knob 405 fixed on it and has a fixed-point rotation degree of freedom. 9. The surface slides to the surface of the second fixing groove 13 for fixing and engaging the drawer 10. In this embodiment, after the sliding piece 403 is rotated to the vertical state, the upper end of the sliding piece 403 will be stuck on the first fixing groove 9, and the lower end will be stuck on the first fixing groove 9. on the second fixing groove 13 , thereby fixing the drawer 10 , preventing the drawer 10 from sliding out of the storage box 1 stably when the device is moved, thereby causing the drawing tool in the drawer 10 to fall and be damaged, and the slide plate 403 is under the sliding plate 403 A circular dome block 402 is installed, thereby reducing the frictional force of the dome block 402 sliding between the first fixing groove 9 and the second fixing groove 13, making it easier to rotate the sliding piece 403, and the second spring 404 can make the sliding sheet 403 press against the first fixing groove 9 and the second fixing groove 13 with a certain strength, which is more conducive to the stability of the drawer 10. During use, if the drawer 10 needs to be pulled out, first rotate the knob 405 to make the sliding sheet 403 is in a horizontal state and one end of the sliding piece 403 is disengaged from the second fixing groove 13, and then the drawer 10 can be easily pulled out. One end of the sliding sheet 403 can be pressed on the second fixing groove 13 again.

The working principle and use process of the present invention: when in use, take out the two latches 202 from the storage box 1 after opening the box cover 4, after moving the box cover 4 to an adaptive position, stabilize the box cover, and then remove the latches one by one 202 can be fixed by inserting it into the pin holes 201 symmetrical on both sides. If the drawer 10 needs to be pulled out, first turn the knob 405 to make the sliding piece 403 in a horizontal state and make one end of the sliding piece 403 disengage from the second fixing groove 13, and then use the handle 12 Pull out the drawer 10 horizontally. When the drawer 10 is pulled out to a certain extent, the pin 301 will slide into the card hole 15 to automatically fix the drawer 10. To pull the drawer 10 back, pull the pull ear 304 with one hand, and then push the drawer 10 After the first fixing slot 9 and the second fixing slot 13 are on the same plane, the knob 405 is rotated again so that the sliding sheet 403 is in the vertical position again. It is sufficient to press one end of the sliding sheet 403 to the second fixing groove 13 again.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. The utility model provides a planar design drawing tool pin-connected panel storage device, includes containing box (1), catch (2), cross baffle (3), case lid (4), handle (5), hasp (6) and median septum (7), its characterized in that: the lock ring (2) is arranged on the front surface of the containing box (1), the lock catch (6) is fixedly arranged on one side of the box cover (4), the lock ring (2) is buckled with the lock catch (6), the box cover (4) is slidably arranged on the top of the containing box (1), the handle (5) is fixedly arranged on the top of the box cover (4), after the lock ring (2) is buckled with the lock catch (6), the containing box (1) can be lifted through the handle (5), the middle partition plate (7) is fixedly arranged in the middle of the inside of the containing box (1), the middle partition plate (7) divides the inside of the containing box (1) into an upper part and a lower part, the cross partition plate (3) is fixedly arranged on the top of the middle partition plate (7), the upper layer of the inside of the containing box (1) is divided into four parts by the cross partition plate (3), drawer openings (8) are formed in the left side and the right side of the containing box (1), and a drawer (10) is arranged on one side of the drawer opening (8) in the storage box (1) in a sliding manner.

2. The modular storage device for graphic drawing tools as claimed in claim 1, wherein: first fixing grooves (9) are symmetrically formed in the left side face and the right side face of the containing box (1).

3. The modular storage device for graphic drawing tools as claimed in claim 2, wherein: two drawer (10) symmetry slip sets up storage box (1) inboard middle and lower part, two drawer (10) inboard has set firmly a word baffle (11), a word baffle (11) will drawer (10) inside divide into two parts, two drawer (10) bottom symmetry slip has set firmly first slide rail (14), two first slide rail (14) bottom sets firmly storage box (1) bottom is inboard, two drawer (10) are through two first slide rail (14) are in storage box (1) inside slides, two drawer (10) right side all sets firmly handle (12), handle (12) can be pulled drawer (10).

4. The modular storage device for graphic drawing tools as claimed in claim 3, wherein: handle (12) with two of one side drawer (10) upper end equal symmetry has seted up second fixed slot (13), two second fixed slot (13) and two first fixed slot (9) are in the both sides face of containing box (1) is at same horizontal plane and be the common circle relation, two drawer (10) openly are close tail end department and have all seted up card hole (15).

5. The assembled storage device for planar design drawing tools according to claim 1, wherein: the storage device further includes:

the two moving rods (100) are symmetrically fixed at the left end and the right end of the box cover (4);

a slide block (101), wherein the slide block (101) transversely penetrates through the lower end part of the movable rod (100) and can freely rotate;

the two second sliding rails (103) are symmetrically fixed at the top ends of the left side surface and the right side surface of the containing box (1), sliding holes are formed in the second sliding rails (103), and the sliding blocks (101) are embedded into the sliding holes so that the moving rod (100) can freely rotate and has a moving degree of freedom in the horizontal direction.

6. The modular storage device for graphic drawing tools as claimed in claim 5, wherein: one end of the sliding block (101) far away from the second sliding rail (103) is provided with a blocking piece (102).

7. The modular storage device for graphic drawing tools as claimed in claim 1, wherein: the storage device further includes:

the two groups of pin holes (201) are symmetrically formed in the top ends of the left side surface and the right side surface of the containing box (1);

the box cover (4) comprises bolts (202), two bolt (202) tops all set firmly pin lid (204), two pin lid (204) tops all set firmly pull ring (203), two bolt (202) are around have around paste establish and follow spiral film (205) that bolt (202) length extends, two bolt (202) accessible spiral film (205) tightly insert inside two sets of pinhole (201) and through two bolt (202) symmetry insert establish in order to be fixed case lid (4), and two bolt (202) all have the degree of freedom of movement.

8. The modular storage device for graphic drawing tools as claimed in claim 4, wherein: the storage device further includes:

the pin column (301), two the pin column (301) symmetry is worn to establish storage box (1) openly both sides, two first spring (303) and ear of pulling (304) have all been set firmly to pin column (301) head end, first spring (303) head end sets firmly ear of pulling (304) one side, first spring (303) tail end is fixed the front of storage box (1), two round pin (301) tail end all rotates and has laid round pin wheel (302), round pin wheel (302) with drawer (10) openly contacts and passively passes through the slip of drawer (10) can be followed the contact surface of drawer (10) carries out the horizontal roll, two round pin wheel (302) and two drawer (10) openly are close two that the tail end department seted up block hole (15) are in same water flat line, and two round pin wheel (302) with two block hole (15) one-to-one, the pin wheel (302) can be passively rolled into the corresponding clamping hole (15) to limit and fix the two drawers (10).

9. The modular storage device for graphic drawing tools as claimed in claim 4, wherein: the storage device further includes:

the sliding bars (401) are symmetrically and rotatably arranged on the two first fixing grooves (9) on the left side surface and the right side surface of the containing box (1), sliding plates (403) are horizontally arranged in the middle of the two sliding bars (401), round top blocks (402) are symmetrically and fixedly arranged on one side surface, close to the sliding bars (401), of the sliding plates (403), knobs (405) are fixedly arranged at one ends, far away from the sliding plates (403), of the two sliding bars (401), second springs (404) are fixedly arranged between the sliding plates (403) and the knobs (405), the sliding plates (403) can freely slide along the surfaces of the sliding bars (401) through the elastic force of the second springs (404) and have moving freedom degrees in the horizontal direction, and the two sliding bars (401) can freely rotate at the first fixing grooves (9) through the knobs (405) fixedly arranged on the sliding bars (401) and have fixed-point rotating freedom degrees, the sliding sheet (403) can be rotated by 90 degrees through the knob (405) to fixedly clamp the drawer (10) by sliding the dome block (402) from the surface of the first fixing groove (9) to the surface of the second fixing groove (13).

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