Pencil lead box

Abstract

The utility model relates to the technical field of pencil lead storage, in particular to a pencil lead box which comprises a box body, at least one opening is formed in the upper portion of the box body, a cover plate matched with the opening is arranged at the opening, the cover plate is used for opening or closing the opening, at least one baffle is arranged in the box body, and the baffle is arranged in the box body. The at least one baffle divides the inner cavity of the box body into at least two cavities for accommodating pencil leads, and the cavities are communicated with the opening; the baffles divide the inner cavity into a plurality of cavities, the pencil leads can be stored in a classified mode according to different specifications, models or colors and the like of the pencil leads, a user can conveniently and rapidly find the needed pencil leads, and the use efficiency is improved. Compared with a plurality of independent pencil lead boxes, the multi-cavity pencil lead box integrates various pencil leads, is more convenient to carry and small in occupied space, relieves the burden of a user, and is convenient to store and carry.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of pencil lead storage, in particular to a pencil lead box. BACKGROUND

[0002] In daily learning and office work, people often use automatic pencils. In order to facilitate the storage and use of automatic pencil leads, pencil lead boxes are generally used to store pencil leads.

[0003] Patent No. 2020222344765 discloses a lead box, which comprises a box body, an internal part matched with the box body, a cavity for accommodating the lead formed between the box body and the internal part; one end of the box body is provided with an opening for inserting the internal part, the other end is provided with a lead outlet for leading out the lead, and the inner wall of the box body is provided with a guide groove corresponding to the lead outlet; the internal part comprises a hopper for accommodating the lead, the upper part of the hopper is a pressing end, the lower part comprises a first elastic sheet abutting against the groove wall of the guide groove and a second elastic sheet abutting against the inner wall bottom of the box body; the side wall of the hopper is provided with a pressing part for clamping with the box body. The patent can realize the storage and use of single or more leads and is not easy to cause lead breakage.

[0004] In actual use, due to differences in process requirements and application needs, various specifications and types of pencil leads are often used. If the existing patent technology is used, multiple independent pencil lead boxes are used to store pencil leads of different diameters, materials and characteristics, which can realize orderly storage and management, but the user needs to carry multiple pencil lead boxes at the same time, which not only increases the carrying burden, but also occupies a large storage space. CONTENT OF THE UTILITY MODEL

[0005] In view of the deficiencies or problems in the prior art, the present disclosure provides a pencil lead box which can accommodate pencil leads of various specifications and types and is convenient to carry.

[0006] The technical solution adopted by the present disclosure to solve the above technical problems is: a pencil lead box, comprising a box body, at least one opening is arranged above the box body, a cover plate matched with the opening is arranged at the opening, the cover plate is used to open or close the opening, at least one baffle is arranged in the box body, the inner cavity of the box body is divided into at least two cavities for accommodating pencil leads by the at least one baffle, and the cavities are in communication with the opening.

[0007] As a preferred embodiment, the box body comprises a bottom plate, two wing plates and two side plates vertically arranged on the bottom plate, the bottom plate, the wing plates and the side plates are integrally formed, the baffles are arranged along the length direction of the box body, the lower end of the baffle extends to the bottom plate, and the upper end of the baffle is flush with the wing plate.

[0008] As a preferred embodiment, the two side edges of the baffle are in contact with and perpendicular to the two side plates respectively; the baffle is arranged in parallel with the wing plate, and the height of the baffle is lower than that of the side plate; the cover plate is arranged between the two side plates.

[0009] As a preferred embodiment, the cover plate is slidingly arranged between the two side plates, the bottom of the cover plate is in contact with the upper end of the wing plate at least partially, and the height of the top end of the cover plate is not lower than that of the top end of the side plate in the vertical direction.

[0010] As a preferred embodiment, at least one side plate is provided with a sliding groove for guiding, and at least one side of the cover plate is provided with a sliding block, the sliding groove and the sliding block are matched to limit the cover plate in the horizontal direction.

[0011] As a preferred embodiment, the sliding groove is a long strip-shaped groove arranged along the width direction of the side plate, and the sliding block is a long strip-shaped protrusion arranged along the length direction of the cover plate.

[0012] As a preferred embodiment, the inner side of at least one side plate is provided with a protrusion for positioning, and at least one side of the cover plate is provided with an inner recess structure, the protrusion and the inner recess structure are matched to position the cover plate sliding in the horizontal direction.

[0013] As a preferred embodiment, the inner recess structure is a plurality of grooves arranged equidistantly along the length direction of the cover plate; the inner recess structure is arranged above the sliding block, and the protrusion is arranged above the sliding groove.

[0014] As a preferred embodiment, at least one partition plate is arranged between the two side plates, the partition plate is arranged in parallel with the side plate, the two sides of the partition plate extend to the two wing plates respectively, and the partition plate is arranged in cross with the baffle.

[0015] As a preferred embodiment, the lower end of the partition plate is in contact with the bottom plate, and the upper end of the partition plate is flush with the side plate.

[0016] As a preferred embodiment, the upper surface of the cover plate is provided with a contact surface facilitating the sliding of the cover plate.

[0017] Compared with the prior art, the baffle divides the inner cavity into a plurality of cavities, and different specifications, models or colors of pencil leads can be classified and stored, so that the user can quickly find the required pencil lead and improve the use efficiency; compared with a plurality of independent pencil lead boxes, the pencil lead box with multiple cavities integrates a plurality of pencil leads, is more convenient to carry, occupies less space, reduces the burden of the user, and is convenient to store and carry.

[0018] The application further provides another pencil lead box, comprising at least two box bodies, and a connecting structure arranged on the at least two box bodies, the connecting structure being used for connecting the box bodies.

[0019] In a preferred embodiment, the connection structure includes a first connecting part and a second connecting part. The first connecting part is disposed on one of the boxes, and the second connecting part is disposed on the other box. The first connecting part and the second connecting part cooperate to connect the two boxes. Attached Figure Description

[0020] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the structure of the pencil lead box according to Embodiment 1 of this disclosure;

[0022] Figure 2 This is an exploded view of the pencil lead box according to Embodiment 1 of this disclosure;

[0023] Figure 3 This is one of the cross-sectional views of the pencil lead box according to Embodiment 1 of this disclosure;

[0024] Figure 4 This is a schematic diagram of the structure of the pencil lead box body according to Embodiment 1 of this disclosure;

[0025] Figure 5 This is a schematic diagram of the structure of the pencil lead box cover plate according to Embodiment 1 of this disclosure;

[0026] Figure 6 This is a second cross-sectional view of the pencil lead box according to Embodiment 1 of this disclosure;

[0027] Figure 7 This is a schematic diagram of the structure of the pencil lead box according to Embodiment 3 of this disclosure;

[0028] Figure 8 This is an exploded view of the pencil lead box according to Embodiment 3 of this disclosure;

[0029] Figure 9 This is one of the structural schematic diagrams of the pencil lead box body according to Embodiment 3 of this disclosure;

[0030] Figure 10 This is the second schematic diagram of the structure of the pencil lead box body according to Embodiment 3 of this disclosure;

[0031] Figure 11 This is a cross-sectional view of the pencil lead box according to Embodiment 3 of this disclosure;

[0032] Figure 12 This is one of the structural schematic diagrams of the first connecting part in the pencil lead box of Embodiment 4 of this disclosure;

[0033] Figure 13 This is the second schematic diagram of the structure of the first connecting part in the pencil lead box of Embodiment 4 of this disclosure;

[0034] Figure 14 This is the third schematic diagram of the structure of the first connecting part in the pencil lead box of Embodiment 4 of this disclosure;

[0035] Figure 15 This is a schematic diagram of the structure of the pencil lead box according to Embodiment 4 of this disclosure.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Box body; 3. Side panel; 5. Wing panel; 6. Baffle; 7. Divider panel; 8. Slide groove; 9. Slider; 10. Protrusion; 11. Groove; 12. Cover plate; 13. Contact surface; 14. Base plate; 15. First buckle; 16. First slot. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0039] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0040] Example 1

[0041] Please refer to Figures 1-6As shown, this application provides a pencil lead box, including a box body 1 that is generally rectangular in shape. An opening is provided at the top of the box body 1, and a matching cover 12 is provided at the opening. The cover 12 is used to open or close the opening. A baffle 6 is provided inside the box body 1, which divides the inner cavity of the box body 1 into two cavities for holding pencil leads. The cavities are connected to the opening. The baffle 6 of this application divides the inner cavity of the box body 1 into two cavities, allowing for the classification and storage of pencil leads according to different specifications, models, or colors, making it easier for users to quickly find the required pencil leads and improving efficiency. Compared to multiple separate pencil lead boxes, the two-cavity pencil lead box integrates two types of pencil leads into one, making it more convenient to carry, taking up less space, reducing the burden on users, and facilitating storage and transport.

[0042] Specifically, the box body 1 includes a base plate 14, and two wing plates 5 and two side plates 3 vertically mounted on the base plate 14. The base plate 14, wing plates 5, and side plates 3 are integrally formed. A baffle 6 is set along the length of the box body 1, with its lower end extending to the base plate 14 and its upper end flush with the wing plates 5. Both the baffle 6 and the wing plates 5 provide support for the cover plate 12 at the same height, making the cover plate 12 more stable during opening and closing. The cover plate 12 is located between the two side plates 3. The two sides of the baffle 6 contact the two side plates 3 respectively and are perpendicular to the two side plates 3. The baffle 6 is set parallel to the wing plates 5, and the height of the baffle 6 and the wing plates 5 is lower than the height of the side plates 3. This creates a height difference between the wing plates 5 and the side plates 3, which facilitates the installation of the cover plate 12. At the same time, the cover plate 12 is not excessively obstructed by the baffle 6 and the wing plates 5 when opening and closing, making the operation smoother and more convenient. The lower height of the wing plates 5 also makes it easier for users to observe the storage of pencil leads inside the box.

[0043] Furthermore, the cover 12 is slidably disposed between the two side panels 3. Specifically, the cover 12 slides along the width direction of the side panels 3 under the push of the user. During the sliding process, at least part of the bottom of the cover 12 contacts the upper end of the wing plate 5. This arrangement effectively reduces the possibility of external dust and debris entering the box 1, and also allows the wing plate 5 to provide better support for the cover 12. In the vertical direction, the top of the cover 12 is not lower than the top of the side panel 3, which makes it more convenient for the user to operate the cover 12. The cover 12 of this application uses a sliding method to open or close the opening of the box 1. Compared with other opening and closing methods (such as flip-top), it is more convenient to retrieve and store items. The user can flexibly control the sliding distance of the cover 12 as needed, thereby sliding the cover 12 a certain distance to retrieve and place pencil leads in the corresponding cavity. In addition, the sliding method of the cover 12 allows the user to operate with one hand, making it more convenient to use.

[0044] To ensure the stability of the cover plate 12 during sliding, one of the side plates 3 is provided with a guide groove 8, and the corresponding side of the cover plate 12 is provided with a slider 9. The groove 8 and the slider 9 cooperate to limit the horizontal movement of the cover plate 12. Specifically, the groove 8 is a long strip-shaped groove arranged along the width of the side plate 3, and the slider 9 is a long strip-shaped protrusion arranged along the length of the cover plate 12. The cooperation of the groove 8 and the slider 9 provides precise guidance for the sliding of the cover plate 12, ensuring that the cover plate 12 can only move horizontally along the direction of the groove 8. This effectively avoids deviation, shaking, or jamming of the cover plate 12 during sliding, ensuring the stability and smoothness of the opening and closing of the cover plate 12. Of course, grooves 8 can also be provided on both side plates 3, and sliders 9 can be provided on both sides of the cover plate 12. The double-sided limiting can further improve the stability of the cover plate 12 during sliding.

[0045] At least one side plate 3 has a positioning protrusion 10 on its inner side, and at least one side of the cover plate 12 has a concave structure. The protrusion 10 cooperates with the concave structure to position the cover plate 12 as it slides horizontally. When the cover plate 12 slides to a specific position, the protrusion 10 can accurately embed into the concave structure, achieving precise positioning of the cover plate 12. This allows the cover plate 12 to be accurately fixed when closed or opened to a designated position, facilitating user operation. For example, when the box 1 needs to be completely closed, the cover plate 12 can be accurately positioned to ensure a sealing effect; when a specific opening needs to be opened to take out or put in pencil lead, it can also be stably held in that position. The concave structure consists of three grooves 11 evenly spaced along the length of the cover plate 12; the concave structure is located above the slider 9, and the protrusion 10 is located above the slide groove 8. As the cover plate 12 slides, the protrusion 10 can enter any of the grooves 11. When the protrusion 10 enters the middle groove 11, the cover plate 12 completely blocks the opening of the box 1. When the protrusion 10 enters the leftmost groove 11, the opening of the box 1 opens, and pencil leads can be stored or retrieved into the cavity located to the right of the baffle 6. When the protrusion 10 enters the rightmost groove 11, the opening of the box 1 opens, and pencil leads can be stored or retrieved into the cavity located to the left of the baffle 6.

[0046] To facilitate sliding of the cover plate 12 by the user, the upper surface of the cover plate 12 is provided with a contact surface 13 to facilitate its sliding. Specifically, the contact surface 13 has a specific shape, such as conforming to the shape of a finger pressing. Alternatively, the contact surface 13 can be a textured surface, such as several raised dots 10 or several raised ridges. This increases the friction between the finger and the cover plate 12, preventing the finger from slipping during the sliding process, allowing the user to more accurately and conveniently control the sliding speed and position of the cover plate 12.

[0047] Example 2

[0048] In this embodiment, the box body 1 is provided with two or more baffles 6 at equal intervals, and other technical features are the same as in embodiment 1. In this embodiment, the box body 1 is divided into at least three cavities by the baffles 6, allowing the user to store more specifications, models, or colors of pencil leads in the same pencil lead box.

[0049] Example 3

[0050] Please refer to Figures 7-11 As shown, this application provides a pencil lead box, including a box body 1 that is generally rectangular in shape. An opening is provided at the top of the box body 1, and a matching cover 12 is provided at the opening. The cover 12 is used to open or close the opening. A baffle 6 is provided inside the box body 1, which divides the inner cavity of the box body 1 into two cavities for holding pencil leads. The cavities are connected to the opening. The baffle 6 of this application divides the inner cavity of the box body 1 into two cavities, allowing for the classification and storage of pencil leads according to different specifications, models, or colors, making it easier for users to quickly find the required pencil leads and improving efficiency. Compared to multiple separate pencil lead boxes, the two-cavity pencil lead box integrates two types of pencil leads into one, making it more convenient to carry, taking up less space, reducing the burden on users, and facilitating storage and transport.

[0051] Specifically, the box body 1 includes a base plate 14, and two wing plates 5 and two side plates 3 vertically mounted on the base plate 14. The base plate 14, wing plates 5, and side plates 3 are integrally formed. A baffle 6 is set along the length of the box body 1, with its lower end extending to the base plate 14 and its upper end flush with the wing plates 5. Both the baffle 6 and the wing plates 5 provide support for the cover plate 12 at the same height, making the cover plate 12 more stable during opening and closing. The cover plate 12 is located between the two side plates 3. The two sides of the baffle 6 contact the two side plates 3 respectively and are perpendicular to the two side plates 3. The baffle 6 is set parallel to the wing plates 5, and the height of the baffle 6 and the wing plates 5 is lower than the height of the side plates 3. This creates a height difference between the wing plates 5 and the side plates 3, which facilitates the installation of the cover plate 12. At the same time, the cover plate 12 is not excessively obstructed by the baffle 6 and the wing plates 5 when opening and closing, making the operation smoother and more convenient. The lower height of the wing plates 5 also makes it easier for users to observe the storage of pencil leads inside the box.

[0052] Furthermore, the cover 12 is slidably disposed between the two side panels 3. Specifically, the cover 12 slides along the width direction of the side panels 3 under the push of the user. During the sliding process, at least part of the bottom of the cover 12 contacts the upper end of the wing plate 5. This arrangement effectively reduces the possibility of external dust and debris entering the box 1, and also allows the wing plate 5 to provide better support for the cover 12. In the vertical direction, the top of the cover 12 is not lower than the top of the side panel 3, which makes it more convenient for the user to operate the cover 12. The cover 12 of this application uses a sliding method to open or close the opening of the box 1. Compared with other opening and closing methods (such as flip-top), it is more convenient to retrieve and store items. The user can flexibly control the sliding distance of the cover 12 as needed, thereby sliding the cover 12 a certain distance to retrieve and place pencil leads in the corresponding cavity. In addition, the sliding method of the cover 12 allows the user to operate with one hand, making it more convenient to use.

[0053] To ensure the stability of the cover plate 12 during sliding, each of the two side plates 3 is provided with a guide groove 8, and a slider 9 is provided on the side of the cover plate 12 facing the side plate 3. The groove 8 and the slider 9 cooperate to limit the horizontal movement of the cover plate 12. Specifically, the groove 8 is a long strip-shaped groove arranged along the width direction of the side plate 3, and the slider 9 is a long strip-shaped protrusion arranged along the length direction of the cover plate 12. The cooperation of the groove 8 and the slider 9 provides precise guidance for the sliding of the cover plate 12, ensuring that the cover plate 12 can only move horizontally along the direction of the groove 8. This effectively avoids the cover plate 12 from deviating, shaking, or jamming during sliding, ensuring the stability and smoothness of the opening and closing of the cover plate 12.

[0054] The inner sides of the two side plates 3 are respectively provided with protrusions 10 for positioning, and the side of the cover plate 12 facing the side plates 3 is provided with a concave structure. The protrusions 10 and the concave structure cooperate to position the cover plate 12 as it slides horizontally. When the cover plate 12 slides to a specific position, the protrusions 10 can accurately embed into the concave structure to achieve precise positioning of the cover plate 12. This allows the cover plate 12 to be accurately fixed when closed or opened to a designated position, facilitating user operation. For example, when the box 1 needs to be completely closed, the cover plate 12 can be accurately positioned to ensure a sealing effect; when a specific opening needs to be opened to take out or put in pencil lead, it can also be stably held in that position. The concave structure consists of three grooves 11 equidistantly arranged along the length of the cover plate 12; the concave structure is located above the slider 9, and the protrusions 10 are located above the slide groove 8. As the cover plate 12 slides, the protrusion 10 can enter any of the grooves 11. When the protrusion 10 enters the middle groove 11, the cover plate 12 completely blocks the opening of the box 1. When the protrusion 10 enters the leftmost groove 11, the opening of the box 1 opens, and pencil leads can be stored or retrieved into the cavity located to the right of the baffle 6. When the protrusion 10 enters the rightmost groove 11, the opening of the box 1 opens, and pencil leads can be stored or retrieved into the cavity located to the left of the baffle 6.

[0055] To facilitate sliding of the cover plate 12 by the user, the upper surface of the cover plate 12 is provided with a contact surface 13 to facilitate its sliding. Specifically, the contact surface 13 has a specific shape, such as conforming to the shape of a finger pressing. Alternatively, the contact surface 13 can be a textured surface, such as several raised dots 10 or several raised ridges. This increases the friction between the finger and the cover plate 12, preventing the finger from slipping during the sliding process, allowing the user to more accurately and conveniently control the sliding speed and position of the cover plate 12.

[0056] A partition plate 7 is provided between the two side plates 3, parallel to the side plates 3. The two sides of the partition plate 7 extend to the two wing plates 5 respectively, and the partition plate 7 intersects with the baffle 6. The lower end of the partition plate 7 contacts the bottom plate 14, and the upper end of the partition plate 7 is flush with the side plates 3. It should be noted that the partition plate 7 horizontally divides the box body 1, splitting the original single opening of the box body 1 into two openings: one between the partition plate 7 and one side plate 3, and another between the partition plate 7 and the other side plate 3. Each of these openings corresponds to a cover plate 12. Each opening corresponds to one cover plate 12, allowing the user to slide only the cover plate 12 on the cavity containing a specific pencil lead, effectively preventing pencil leads from falling out or being damaged in other cavities. The partition 7 and the baffle 6 intersect to form a "well" shaped structure, dividing the inner cavity of the box 1 into four independent sub-cavities, supporting more refined classification and storage (such as differentiation by color, hardness, diameter and other dimensions), and further improving space utilization.

[0057] Example 4

[0058] Please refer to Figures 12-15 As shown, this application provides a pencil lead box, including at least two box bodies 1, one of which has a first connecting part on its side plate 3 and the other has a second connecting part on its side plate 3. The first connecting part and the second connecting part cooperate to connect the box bodies 1.

[0059] Specifically, the first connecting part includes two first buckles 15 and two first slots 16. The two first buckles 15 and the two first slots 16 are arranged diagonally on the side plate 3, and the line connecting the two first buckles 15 intersects the line connecting the two first slots 16. The second connecting part includes two second buckles and two second slots. The two second buckles and the two second slots are arranged diagonally on the side plate 3, and the line connecting the two second buckles intersects the line connecting the two second slots. The two first buckles 15 and the two second slots are correspondingly arranged, and the two first slots 16 and the two second buckles are correspondingly arranged. The two first buckles 15 engage with the two second slots, and the two first slots 16 engage with the two second buckles, thus snapping the two box bodies 1 together.

[0060] More specifically, the first slot 16 and the second slot can be circular, elongated, or other irregular shapes. The shape of the first buckle 15 is adapted to the second slot, and the shape of the second buckle is adapted to the first slot 16. The specific shapes of the first slot 16, the second slot, the first buckle 15, and the second buckle are not limited here, as long as they can serve the function of locking.

[0061] Connecting multiple boxes 1 together allows for the storage of pencil leads of more specifications, models, or colors. In addition, connecting multiple boxes 1 together makes them more convenient to carry and transport. If there are multiple separate boxes 1, friction and noise will occur during transportation and carrying. Connecting multiple boxes 1 together can effectively avoid friction between them during transportation.

[0062] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A pencil lead holder characterized by, The box body (1) comprises a bottom plate (14), two wing plates (5) and two side plates (3) vertically arranged on the bottom plate (14), the bottom plate (14), the wing plates (5) and the side plates (3) are integrally formed, the baffle (6) is arranged along the length direction of the box body (1), the lower end of the baffle (6) extends to the bottom plate (14), and the upper end of the baffle (6) is flush with the wing plate (5).

2. The lead refill cartridge of claim 1, wherein, The two side edges of the baffle (6) are in contact with and perpendicular to the two side plates (3); the baffle (6) is arranged in parallel with the wing plate (5), and the height of the baffle (6) is lower than that of the side plate (3); and the cover plate (12) is arranged between the two side plates (3).

3. The lead refill cartridge of claim 2, wherein, The cover plate (12) is slidably arranged between the two side plates (3), the bottom of the cover plate (12) is at least partially in contact with the upper end of the wing plate (5), and in the vertical direction, the height position of the top end of the cover plate (12) is not lower than that of the top end of the side plate (3).

4. The lead cartridge of claim 3, wherein, At least one side plate (3) is provided with a sliding groove (8) for guiding, at least one side of the cover plate (12) is provided with a sliding block (9), the sliding groove (8) cooperates with the sliding block (9) to limit the cover plate (12) in the horizontal direction.

5. The lead cartridge of claim 2, wherein, The sliding groove (8) is a long strip-shaped groove arranged along the width direction of the side plate (3), and the sliding block (9) is a long strip-shaped protrusion arranged along the length direction of the cover plate (12).

6. The lead cartridge of claim 5, wherein, At least one side plate (3) is provided with a protrusion (10) for positioning on the inner side, at least one side of the cover plate (12) is provided with an inner recess structure, the protrusion (10) cooperates with the inner recess structure to position the cover plate (12) sliding in the horizontal direction.

7. The lead cartridge of claim 2, wherein, The inner recess structure is a plurality of grooves (11) equidistantly arranged along the length direction of the cover plate (12).

8. The lead cartridge of claim 7, wherein, At least one partition plate (7) is arranged between the two side plates (3), the partition plate (7) is arranged in parallel with the side plate (3), the two sides of the partition plate (7) extend to the two wing plates (5) respectively, the partition plate (7) is arranged in cross with the baffle (6); the lower end of the partition plate (7) is in contact with the bottom plate (14), and the upper end of the partition plate (7) is flush with the side plate (3).

9. The lead cartridge of claim 2, wherein, The box body (1) comprises a bottom plate (14), two wing plates (5) and two side plates (3) vertically arranged on the bottom plate (14), the bottom plate (14), the wing plates (5) and the side plates (3) are integrally formed, the baffle (6) is arranged along the length direction of the box body (1), the lower end of the baffle (6) extends to the bottom plate (14), and the upper end of the baffle (6) is flush with the wing plate (5).

10. A pencil lead holder characterized by, At least two box bodies (1) are provided with connecting structures for connecting the box bodies (1).

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