Portable blade storage box for printing processing
By designing a portable blade storage box including a safety component, a push component and an elastic component, the problems of blade dropout, rust and inconvenient storage in the prior art are solved, and higher safety and convenience are achieved.
Patent Information
- Application Number
- CN202421147524.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The blade storage box in the prior art lacks an insurance mechanism, which may cause the blade to fall out during carrying and transportation, which may cause danger; the new knife cavity is exposed to the outside and can easily cause rust; it is very inconvenient to cover the cover when storing the discarded blade.
A portable blade storage box including a box body, a new knife cover, an elastic component, a waste knife cover, a push component and a safety component are designed. There is a new knife cavity and a waste knife cavity inside the box, which is isolated by a partition plate, and both the new knife cover and the waste knife cover can be sealed. The push component pushes the new blades through sliding, the elastic component keeps the new blades stacked, and the fuse component limits the movement of the push component during transportation, preventing the blade from falling out.
It effectively prevents the risk of blade falling out during transportation, avoids rust, simplifies the storage and processing of discarded blades, and improves the convenience and safety of operation.
Smart Images

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Abstract
Description
Technical Field
[0001] The present application relates to the field of printing and processing equipment, and in particular to a portable blade storage box for printing and processing. Background Art
[0002] In the field of printing and processing, blades are often needed for trimming or cutting. However, blades have a certain lifespan. After long-term use, the blades will wear, become blunt or break, thereby affecting the cutting efficiency and the smoothness of the cutting. At this time, it is very necessary to replace the blades. However, the removed waste blades are still dangerous and cannot be discarded with ordinary garbage. They can only be put into specially marked containers for disposal. In this process, the operator needs to replace the new blades and remove the waste blades and put them into the waste containers. It is inconvenient and dangerous without special containers during the operation. There is currently a lack of blade storage boxes that are convenient for operators to carry on the market.
[0003] In the prior art, application publication number CN220411521U discloses a blade storage box, comprising a box body, wherein a new blade chamber and an old blade chamber are provided in isolation from each other, and a plurality of new blades arranged in a stacked manner are stored in the new blade chamber, a blade outlet is provided on one side of the box body corresponding to the new blade chamber, a pushing assembly is slidably provided on the box body, a resilient abutment is provided in the new blade chamber, a storage opening and a cover that can be openably covered on the storage opening are provided in the new blade chamber, and the new blade in the new blade chamber is pushed to the blade outlet along the slide groove by the pushing assembly. After the previous new blade is pulled out, the resilient abutment piece can immediately push the next new blade to the uppermost side, and the new blade is stably protected by the pushing assembly, and the new blade will not swing when being pushed, so that the blade can be smoothly pushed out. In addition, by providing the old blade chamber in the lower shell, it is convenient to recycle the replaced old blade or the broken blade and place it in the old blade chamber, thereby avoiding subsequent cleaning.
[0004] However, there are the following problems in the prior art:
[0005] 1. This blade storage box has no safety mechanism, which may cause the blade to fall out during transportation, causing danger.
[0006] 2. The new blade cavity of this blade storage box is exposed to the outside, which may easily cause the blade to rust.
[0007] 3. This blade storage box needs to be covered with a lid when storing discarded blades, which is very inconvenient. Utility Model Content
[0008] In order to solve the above problems, the utility model provides a portable blade storage box for printing processing:
[0009] A portable blade storage box for printing processing comprises a box body, a new blade cover, an elastic component, a waste blade cover, a pushing component and a safety component, wherein a new blade chamber and a waste blade chamber opening upward are provided inside the box body, the new blade chamber and the waste blade chamber are separated by a partition plate provided on the box body, the new blade cover covers the top of the new blade chamber and forms a seal, the new blade cover is rotatably connected to the upper end of the partition plate, the new blade cover can be turned up and opened around the connection with the partition plate, new blades are stacked inside the new blade chamber, the pushing component is slidably connected to the side of the box body close to the new blade chamber, and when the pushing component is pushed upward, a safety component is provided at the lower part of the pushing component Some pushing transverse plates will drive the new blade closest to the pushing assembly to move upward, and the new blade is pushed out through the knife outlet provided on the new blade cover and exposed to the outside, a first elastic baffle is provided above the knife outlet, and the first elastic baffle is fixedly connected to the new blade cover at a side away from the knife outlet, and when closed, the first elastic baffle covers the knife outlet and forms a seal, and when the blade is pushed out, the blade can push the first elastic baffle to tilt outward to expose the blade body to the outside, and an elastic component is provided on the side of the new blade cavity away from the pushing component, and the elastic component continuously gives an elastic force to move the stacked new blade toward the side of the pushing component;
[0010] The pushing assembly includes a push button located on the outside of the box body, and the safety assembly is located on the side when the push button is at the bottom. When locked, the limiting push rod of the safety assembly is inserted into the limiting hole provided by the push button to limit the movement of the pushing assembly. When unlocked, the limiting push rod of the safety assembly does not limit the movement of the pushing assembly. The waste knife cover is closed above the waste knife edge and forms a seal. The waste knife cover is movably connected to the box body. The waste knife cover is provided with a waste knife edge. A second elastic baffle is provided below the waste knife edge. The second elastic baffle is fixedly connected to the waste knife cover away from the waste knife edge. The second elastic baffle blocks the waste knife edge and forms a seal. A waste blade can push the second elastic baffle through the waste knife edge to tilt and throw the waste blade into the waste knife cavity.
[0011] Preferably, the push assembly includes a slide plate, the slide plate is slidably connected to a slide groove provided on one side of the box body close to the new blade cavity, a slideway is provided on the outer surface of the box body, the slideway is smaller than the slideway to form a limit fit, the slideway is connected to the slideway, the slideway is used to pass through a first male buckle provided on the outer side of the slideway, the first male buckle is adapted to a first female buckle provided on the push button to install and fix the push button, and the outer part of the push button is larger than the slideway to form a limit fit. The operation of lifting the blade can be completed from the outside by moving the push button upward, and when the push button is installed, the push button limits the horizontal movement of the push assembly to the inside, and the slide plate limits the horizontal movement of the push assembly to the outside, thereby completing the horizontal fixation of the push assembly, and during installation, the slide plate can be first installed into the slideway, and then the push button can be installed through the first male buckle and the first female port.
[0012] Preferably, the safety assembly further comprises a safety block, the limit push rod is located inside the safety block and forms a sliding adaptation, a sliding window is provided on the side of the safety block away from the box body, the sliding window is adapted to a sliding column provided on the limit push rod, the sliding column is used to drive the limit push rod to move, a notch adapted to the limit push rod is provided on the first male buckle, when the sliding column slides toward the push button side, the limit push rod is driven to insert into the push button to limit the movement of the push assembly, when the sliding column moves away from the push button, the sliding column drives the limit push rod away from the push button without restricting the movement of the push assembly. The limit push rod can be driven to move through the sliding window to complete locking or unlocking for easy operation.
[0013] Preferably, the pushing cross plate is fixedly connected to the lower end of the slide plate, the width of the pushing cross plate is adapted to the thickness of the blade, and the lower end of the new knife cavity is provided with a groove adapted to the pushing cross plate. When the pushing cross plate is located at the bottom, the upper surface of the pushing cross plate and the lower surface of the new knife cavity are located in the same plane, so the new blade can slide freely in the new knife cavity without being blocked by the pushing cross plate.
[0014] Preferably, the elastic component includes a push plate and two springs, one side of the two springs is fixedly connected to the partition plate, and the other side of the two springs relative to the partition plate is fixedly connected to the push plate, and the size of the push plate is adapted to the new knife cavity. The two springs make the partition plate less likely to tilt, increase the thrust of the push plate and improve efficiency.
[0015] Preferably, a mortise is provided at the lower end of the waste knife cover parallel to the length direction of the partition plate, and the mortise and the tenon provided at the upper end of the box body are matched to form a limit fit, and when the waste knife cover needs to be opened, the waste knife cover can be moved along the length direction of the mortise to expose the waste knife cavity. The mortise and tenon structure makes it easier to open and close the waste knife cover.
[0016] Preferably, the new blade cover is provided with a second male buckle on the side away from the partition plate, and the second male buckle is matched with a second female buckle provided on the box body. When the new blade cover is closed, the second male buckle and the second female buckle are buckled together, so that the new blade cover will not be opened easily. When the new blade cover is to be opened, the lower end of the second male buckle can be pulled outward to release the buckle and open the new blade cover.
[0017] Preferably, the length of the knife exit is adapted to the size of the new knife cavity, so that the new blade to be lifted can pass through the knife exit without being blocked regardless of whether it is located in the middle.
[0018] Beneficial effect: the operator can put the blade stack into the new blade cavity in advance. When the blade needs to be replaced, first slide the slide column to make the limit push rod away from the push button, and then slide the push button upward to take out the new blade for replacement. If multiple new blades are needed, just move the push button downward to reset, and the elastic component will push the blade above the push cross plate again, and then slide the push button upward to push out the new blade. After replacing the new blade, the operator only needs to throw the waste blade from the waste blade edge into the waste blade cavity and then uniformly handle it in a special way. Because the lower end of the waste blade edge is provided with a second elastic baffle, the second elastic baffle only allows passing from top to bottom. Therefore, after the waste blade is thrown into the waste blade cavity, no other operations are required and the waste blade will not fall out of the waste blade edge.
[0019] The first elastic flap disposed above the blade outlet is kept closed when not in use to seal the new blade cavity, so that the new blade stored in the new blade cavity is not easily corroded by the external environment, and the blade is not exposed to the outside, which improves safety;
[0020] When being carried for transportation or not in use, the slide column can be slid so that the limiting rod is inserted into the push button for limiting, which greatly reduces the possibility of the new blade being pushed out due to misoperation such as collision or squeezing during transportation, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the assembly of the embodiment.
[0022] Figure 2 This is a schematic diagram of the structure of the insurance component and the push component.
[0023] Figure 3 Schematic diagram of the internal structure of the box.
[0024] Figure 4 It is a structural schematic diagram of an embodiment.
[0025] Figure 5 A schematic diagram of the structure of a push button.
[0026] Figure 6 This is a schematic diagram of the structure of the push component.
[0027] Figure numerals: 1, box body; 2, new knife cover; 3, elastic component; 4, waste knife cover; 5, push component; 6, insurance component; 7, new knife cavity; 8, waste knife cavity; 9, partition plate; 10, push horizontal plate; 11, knife edge; 12, first elastic stop flap; 13, second elastic stop flap; 14, push button; 15, limit push rod; 16, waste knife edge; 17, slide plate; 18, slide groove; 19, slideway; 20, first male buckle; 21, first female buckle; 22, insurance block; 23, sliding window; 24, sliding column; 25, notch; 26, groove; 27, spring; 28, push plate; 29, mortise; 30, tenon; 31, second male buckle; 32, second female buckle; 33, limit hole. DETAILED DESCRIPTION
[0028] The following is combined with Figure 1-6 The utility model is further described with examples.
[0029] Example 1: Figure 1 As shown, a portable blade storage box for printing processing includes a box body 1, a new blade cover 2, an elastic component 3, a waste blade cover 4, a pushing component 5 and a safety component 6. The box body 1 is provided with a new blade chamber 7 and a waste blade chamber 8 with openings upward, and the new blade chamber 7 and the waste blade chamber 8 are separated by a partition plate 9 provided on the box body 1. The new blade cover 2 covers the top of the new blade chamber 7 and forms a seal. The new blade cover 2 is rotatably connected to the upper end of the partition plate 9, and the new blade cover 2 can be turned up and opened around the connection with the partition plate 9. Figure 4 As shown, the new blade cover 2 is provided with a second male buckle 31 on the side away from the partition plate 9, and the second male buckle 31 is matched with the second female buckle 32 provided on the box body 1. When the new blade cover 2 is closed, the second male buckle 31 and the second female buckle 32 are buckled, so that the new blade cover 2 will not be opened easily. When the new blade cover 2 is to be opened, the lower end of the second male buckle 31 can be pulled outward to release the buckle and open the new blade cover 2. After opening the new blade cover 2, a new blade can be stacked and installed.
[0030] like Figure 3 and Figure 4 As shown, the pushing assembly 5 is slidably connected to the box body 1 near the new knife cavity 7, as shown in FIG. Figure 6As shown, the pushing assembly 5 includes a slide plate 17 and a push button 14 located on the outside of the box body 1, the slide plate 17 is slidably connected to a slide groove 18 opened on the side of the box body 1 close to the new knife cavity 7, a slideway 19 is opened on the outer surface of the box body 1, and the slideway 19 is smaller than the slide plate 17 to form a limit fit. During the movement of the slide plate 17, the slideway 19 is continuously blocked by the slide plate 17 to form a seal, and the slideway 19 is connected to the slide groove 18, and the slideway 19 is used to pass through a first male buckle 20 provided on the outside of the slide plate 17, the first male buckle 20 is adapted to a first female buckle 21 provided on the push button 14 to install and fix the push button 14, and the outside of the push button 14 is larger than the slideway 19 to form a limit fit. The operation of lifting the blade can be completed from the outside by moving the push button 14 upward. When the push button 14 is installed, the push button 14 limits the horizontal movement of the push assembly 5 to the inside, and the slide plate 17 limits the horizontal movement of the push assembly 5 to the outside, thereby completing the horizontal fixation of the push assembly 5. During installation, the slide plate 17 can be first installed into the slideway 19, and then the push button 14 can be installed through the first male buckle 20 and the first female port. Figure 6 As shown, when the push button 14 outside the box body 1 pushes the push assembly 5 to slide upward, the push transverse plate 10 provided at the lower part of the push assembly 5 will drive the new blade closest to the push assembly 5 to move upward, and the push transverse plate 10 is fixedly connected to the lower end of the slide plate 17. The width of the push transverse plate 10 is adapted to the thickness of the blade. The lower end of the new blade cavity 7 is provided with a groove 26 adapted to the push transverse plate 10. Figure 4 As shown, when the pushing transverse plate 10 is at the bottom, the upper surface of the pushing transverse plate 10 and the lower surface of the new knife cavity 7 are located in the same plane, so the new blade can slide freely in the new knife cavity 7 without being blocked by the pushing transverse plate 10, and the new blade is pushed out through the knife outlet 11 provided on the new knife cover 2 and exposed to the outside. The length of the knife outlet 11 is adapted to the size of the new knife cavity 7, so no matter whether the new blade to be lifted is located in the middle or not, it can pass through the knife outlet 11 without being blocked.
[0031] like Figure 4 As shown, a first elastic baffle 12 is provided above the knife outlet 11, and the first elastic baffle 12 is fixedly connected to the new knife cover 2 on the side away from the knife outlet 11. When closed, the first elastic baffle 12 covers the knife outlet 11 and forms a seal. When the blade is pushed out, the blade can push the first elastic baffle 12 to tilt outward to expose the blade body to the outside. Preferably, the first elastic baffle 12 is made of rubber.
[0032] like Figure 3As shown, an elastic component 3 is provided inside the new blade cavity 7 on a side away from the push component 5, and the elastic component 3 includes a push plate 28 and two springs 27, one side of the two springs 27 are fixedly connected to the partition plate 9, and the other side of the two springs 27 relative to the partition plate 9 is fixedly connected to the push plate 28, and the size of the push plate 28 is adapted to the new blade cavity 7. The two springs 27 make the partition plate 9 less likely to tilt, increase the thrust of the push plate 28 and improve efficiency, and the elastic component 3 continuously gives the elastic force that causes the stacked new blades to move toward the side of the push component 5.
[0033] like Figure 1 As shown, the insurance component 6 includes an insurance block 22, a limit push rod 15 and a slide column 24. The insurance component 6 is located on the side of the push button 14 when it is at the bottom. The limit push rod 15 is located inside the insurance block 22 and forms a sliding adaptation. The insurance block 22 has a sliding window 23 on the side away from the box body 1. The sliding window 23 is adapted to the slide column 24 provided on the limit push rod 15. The slide column 24 is used to drive the limit push rod 15 to move. The first male buckle 20 has a The notch 25 of the rod 15, the push button 14 has a limiting hole 33 adapted to the limiting push rod 15 on one side relative to the safety component 6. When locking, the slide column 24 slides toward the push button 14 to drive the limiting push rod 15 to pass through the limiting hole 33 and insert into the push button 14 to limit the movement of the push component 5. When the slide column 24 moves away from the push button 14, the slide column 24 drives the limiting push rod 15 away from the push button 14 without restricting the movement of the push component 5. The sliding window 23 can drive the limiting push rod 15 to move to complete locking or unlocking for easy operation.
[0034] like Figure 1 As shown, the waste knife cover 4 covers the waste knife edge 16 and forms a seal. The lower end of the waste knife cover 4 is provided with a mortise 29 parallel to the length direction of the partition plate 9. The mortise 29 and the tenon 30 provided on the upper end of the box body 1 are adapted to form a limit fit. When the waste knife cover 4 needs to be opened, the waste knife cover 4 can be moved along the length direction of the mortise 29 to expose the waste knife cavity 8 to the outside. The mortise and tenon structure makes it easier to open and close the waste knife cover 4. Figure 4 As shown, the waste knife cover 4 is provided with a waste knife edge 16, and a second elastic baffle 13 is provided below the waste knife edge 16. The second elastic baffle 13 is fixedly connected to the waste knife cover 4 on the side away from the waste knife edge 16. The second elastic baffle 13 blocks the waste knife edge 16 and forms a seal. The waste blade can pass through the waste knife edge 16 to push the second elastic baffle 13 to tilt and throw the waste blade into the waste knife cavity 8.
[0035] The operator can stack the blades into the new blade cavity 7 in advance. When the blade needs to be replaced, first slide the slide column 24 to make the limit push rod 15 away from the push button 14, and then slide the push button 14 upward to take out the new blade for replacement. If multiple new blades are needed, just move the push button 14 downward to reset it, and the elastic component 3 will push the blade to the top of the pushing cross plate 10 again, and then slide the push button 14 upward to push out the new blade. After replacing the new blade, the operator only needs to throw the waste blade from the waste blade edge 16 into the waste blade cavity 8 and then handle it in a unified special way, because the lower end of the waste blade edge 16 is provided with a second elastic baffle 13, and the second elastic baffle 13 is only allowed to pass from top to bottom. Therefore, after the waste blade is thrown into the waste blade cavity 8, no other operation is required and the waste blade will not fall out from the waste blade edge 16.
[0036] The first elastic retaining flap 12 above the knife outlet 11 remains closed when not in use to seal the new knife cavity 7, so that the new knife blade stored in the new knife cavity 7 is not easily corroded by the external environment, and the blade is not exposed to the outside, which improves safety.
[0037] When being carried for transportation or not in use, the slide column 24 can be slid so that the limiting rod is inserted into the push button 14 for limiting, which greatly reduces the possibility of the new blade being pushed out due to misoperation such as collision or squeezing during transportation, thereby improving safety.
Claims
1. A portable blade storage box for printing processing, characterized by: The utility model comprises a box body (1), a new blade cover (2), an elastic component (3), a waste blade cover (4), a pushing component (5) and a safety component (6); the box body (1) is provided with a new blade chamber (7) and a waste blade chamber (8) with openings facing upward; the new blade chamber (7) and the waste blade chamber (8) are separated by a partition plate (9) provided on the box body (1); the new blade cover (2) covers the top of the new blade chamber (7) and forms a seal; the new blade cover (2) is rotatably connected to the upper end of the partition plate (9); the new blade cover (2) can be turned upside down around the connection with the partition plate (9); new blades are stacked inside the new blade chamber (7); the pushing component (5) is slidably connected to the side of the box body (1) close to the new blade chamber (7); when the pushing component (5) is pushed to slide upward, the lower part of the pushing component (5) is provided with Some pushing transverse plates (10) will drive the new blade closest to the pushing assembly (5) to move upwards, and the new blade is pushed out through the knife outlet (11) provided on the new blade cover (2) and exposed to the outside. A first elastic retaining flap (12) is provided above the knife outlet (11), and the first elastic retaining flap (12) is fixedly connected to the new blade cover (2) at a side away from the knife outlet (11). When closed, the first elastic retaining flap (12) covers the knife outlet (11) and forms a seal. When the blade is pushed out, the blade can push the first elastic retaining flap (12) to tilt outward to expose the blade body to the outside. An elastic component (3) is provided inside the new blade cavity (7) at a side away from the pushing assembly (5), and the elastic component (3) continuously provides an elastic force to move the stacked new blades toward the side of the pushing assembly (5). The push assembly (5) comprises a push button (14) located outside the box body (1); the safety assembly (6) is located on the side of the push button (14) when it is at the bottom; when locked, the limit push rod (15) of the safety assembly (6) is inserted into the limit hole (33) provided in the push button (14) to limit the movement of the push assembly (5); when unlocked, the limit push rod (15) of the safety assembly (6) does not limit the movement of the push assembly (5); the waste knife cover (4) covers the waste knife edge (16) provided thereon and To form a seal, the waste blade cover (4) is movably connected to the box body (1), the waste blade cover (4) is provided with a waste blade edge (16), a second elastic blocking flap (13) is provided below the waste blade edge (16), the second elastic blocking flap (13) is fixedly connected to the waste blade cover (4) on a side away from the waste blade edge (16), the second elastic blocking flap (13) blocks the waste blade edge (16) and forms a seal, and a waste blade can pass through the waste blade edge (16) to push the second elastic blocking flap (13) to tilt and drop the waste blade into the waste blade cavity (8).
2. A portable blade storage box for printing processing according to claim 1, characterized in that: The pushing assembly (5) comprises a slide plate (17), the slide plate (17) being slidably connected to a slide groove (18) provided on a side of the box body (1) close to the new knife chamber (7), a slideway (19) being provided on the outer surface of the box body (1), the slideway (19) being smaller than the slide plate (17) to form a limit fit, the slideway (19) being connected to the slide groove (18), the slideway (19) being used to pass through a first male buckle (20) provided on the outer side of the slide plate (17), the first male buckle (20) being adapted to a first female buckle (21) provided on the push button (14) to install and fix the push button (14), the outer portion of the push button (14) being larger than the slideway (19) to form a limit fit.
3. The portable blade storage box for printing processing according to claim 2 is characterized by: The safety assembly (6) further comprises a safety block (22), the limit push rod (15) being located inside the safety block (22) and forming a sliding adaptation, a sliding window (23) being provided on the side of the safety block (22) facing away from the box body (1), the sliding window (23) being adapted to a sliding column (24) provided on the limit push rod (15), the sliding column (24) being used to drive the limit push rod (15) to move, a notch (25) being adapted to the limit push rod (15) being provided on the first male buckle (20), when the sliding column (24) slides toward the push button (14), the limit push rod (15) is driven to be inserted into the push button (14) to limit the movement of the push assembly (5), and when the sliding column (24) moves away from the push button (14), the sliding column (24) drives the limit push rod (15) away from the push button (14) without limiting the movement of the push assembly (5).
4. The portable blade storage box for printing processing according to claim 2 is characterized by: The pushing transverse plate (10) is fixedly connected to the lower end of the slide plate (17); the width of the pushing transverse plate (10) is adapted to the thickness of the blade; the lower end of the new knife cavity (7) is provided with a groove (26) adapted to the pushing transverse plate (10); when the pushing transverse plate (10) is located at the bottom, the upper surface of the pushing transverse plate (10) and the lower surface of the new knife cavity (7) are located in the same plane.
5. The portable blade storage box for printing processing according to claim 1 is characterized by: The elastic component (3) comprises a push plate (28) and two springs (27), one side of the two springs (27) is fixedly connected to the partition plate (9), and the other side of the two springs (27) is fixedly connected to the push plate (28) relative to the partition plate (9), and the size of the push plate (28) is adapted to the new knife cavity (7).
6. The portable blade storage box for printing processing according to claim 1 is characterized by: The waste knife cover (4) is provided with a mortise (29) parallel to the length direction of the partition plate (9) at the lower end, and the mortise (29) and the tenon (30) provided at the upper end of the box body (1) are matched to form a limit fit, and when it is necessary to open the waste knife cover (4), the waste knife cover (4) can be moved along the length direction of the mortise (29) to expose the waste knife cavity (8) to the outside.
7. The portable blade storage box for printing processing according to claim 1 is characterized by: A second male buckle (31) is provided on the side of the new blade cover (2) away from the partition plate (9), and the second male buckle (31) is matched with a second female buckle (32) provided on the box body (1).
8. The portable blade storage box for printing processing according to claim 1 is characterized by: The length of the knife outlet (11) is adapted to the size of the new knife cavity (7).
Citation Information
Patent Citations
Blade storage box
CN220411521U