Consumable cartridge and printer

Abstract

The application discloses a consumable box and a printer. The consumable box comprises a shell, a label paper roll and an elastic member. The label paper roll comprises a reel and label paper wound on the reel. The reel is rotationally connected with the shell. The label paper can drive the reel to rotate in a first direction when the label paper is fed out. The elastic member is connected between the shell and the reel. After the reel rotates by a first preset angle in the first direction, the elastic member is elastically deformed to store a preset limit force, so as to apply an acting force in a second direction to the reel. The first direction is opposite to the second direction. The application can improve the problem of an unsmooth printing process.

Description

Technical Field

[0001] This application relates to the field of label printer technology, and more particularly to a consumable box and printer. Background Technology

[0002] In related technologies, a printer's consumables box contains a label paper roll, which includes a spool and label paper wound around the spool.

[0003] During printing, the roller rotates and the label paper is dispensed; when printing ends, the roller stops rotating, and the label paper spreads out, causing subsequent printing processes to be disrupted. Utility Model Content

[0004] This application provides a consumable box and printer to improve the problem of unsmooth printing process.

[0005] According to one aspect of this application, a consumable box is provided, including a housing, a label roll, and an elastic element. The label roll includes a spool and label paper wound around the spool. The spool is rotatably connected to the housing. When the label paper is dispensed, it can drive the spool to rotate in a first direction. The elastic element is connected between the housing and the spool. After the spool rotates along the first direction by a first preset angle, the elastic deformation of the elastic element stores force to a preset limit to apply a force to the spool in a second direction, wherein the first direction is opposite to the second direction.

[0006] In some embodiments, the elastic element is configured to begin elastic deformation after the spool rotates a second preset angle along the first direction.

[0007] In some embodiments, one end of the elastic element is connected to the spool, and the other end is configured to abut against the housing and undergo elastic deformation when the spool rotates in the first direction.

[0008] In some embodiments, one end of the elastic element is connected to the spool, and the other end extends along a third direction to form a first locking protrusion; the housing includes a second locking protrusion, and when the spool rotates along the first direction, the first locking protrusion and the second locking protrusion abut against each other; the angle between the third direction and the radial direction of the spool is less than 90°.

[0009] In some embodiments, the housing includes a plurality of second latching protrusions, which are spaced apart along the first direction.

[0010] In some embodiments, a first reinforcing rib is provided between at least two of the second protrusions.

[0011] In some embodiments, a first reinforcing rib is provided between any two adjacent second protrusions, and a plurality of the first reinforcing ribs are connected to form a ring structure.

[0012] In some embodiments, the length of the first and second protrusions abutting each other is 1mm-4mm.

[0013] In some embodiments, the housing includes a bottom wall, one end of the second latching protrusion is connected to the bottom wall, and the other end extends in a direction away from the bottom wall; when the elastic element recovers its deformation, the distance between the end faces of the first latching protrusion and the second latching protrusion away from the bottom wall is 1.5mm-2.5mm.

[0014] In some embodiments, one end of the elastic element is connected to the spool, and the other end extends along a third direction to form a first locking protrusion, the angle between the third direction and the radial direction of the spool being less than 90°; the housing includes a plurality of second locking protrusions spaced apart along the first direction, and when the spool rotates along the first direction, the first locking protrusions and the second locking protrusions abut against each other; wherein, a first reinforcing rib is provided between any two adjacent second locking protrusions, and the plurality of first reinforcing ribs are connected to form a ring structure; the first locking protrusion is located within the ring structure, and the distance between the first locking protrusion and the inner sidewall of the ring structure is 0.3mm-1mm.

[0015] In some embodiments, the housing includes a second latch for abutting against the elastic element when the spool rotates in the first direction; a second reinforcing rib is provided at the connection between the second latch and the housing.

[0016] In some embodiments, the housing includes a plurality of second latching protrusions, wherein a first reinforcing rib is provided between at least two of the second latching protrusions; the first reinforcing rib and the second reinforcing rib are integrally formed.

[0017] In some embodiments, the housing is provided with a winding post; the spool includes an inner shaft and an outer shaft connected to each other, the inner shaft is rotatably connected to the winding post, and the outer shaft surrounds the inner shaft; the label paper is wound around the outer shaft.

[0018] In some embodiments, the elastic element is connected between the housing and the inner shaft.

[0019] In some embodiments, a limiting member is provided on the inner shaft, the limiting member being located on the side of the elastic member opposite to the winding post, to restrict the movement of the elastic member in a direction away from the winding post.

[0020] In some embodiments, a third reinforcing rib is provided between the inner shaft and the outer shaft.

[0021] In some embodiments, a limiting member is provided on the inner shaft, the limiting member being located on the side of the elastic member opposite to the winding column, to restrict the axial movement of the elastic member; the limiting member and the third reinforcing rib are an integral structure.

[0022] In some embodiments, the consumable box further includes a cover that closes with the housing to form a cavity; the label roll is located within the cavity.

[0023] In some embodiments, the distance between the side surface of the cover facing the label roll and the label roll is 0.2 mm to 1 mm.

[0024] In some embodiments, the housing includes a bottom wall and a side wall, one end of the side wall being connected to the bottom wall and the other end extending away from the bottom wall; the axial direction of the roll is parallel to the extending direction of the side wall; and the distance between the label paper and the side wall in the full-paper state is 1mm-2mm.

[0025] According to another aspect of this application, a printer is provided, including a consumable cartridge as described above.

[0026] The consumable box of this application embodiment uses an elastic element between the shell and the roll. The elastic element accumulates a force in a second direction as the roll rotates in the first direction to feed the paper. The second direction is opposite to the first direction. Thus, after the roll rotates in the first direction by a preset angle to store the elastic deformation of the elastic element to a preset limit, the force stored in the elastic element drives the roll to rotate in the second direction. This keeps the outer edge of the label paper tightly wound around the roll, thereby ensuring smooth subsequent printing. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of a printer according to one embodiment of this application is shown.

[0029] Figure 2 A schematic diagram of a consumable box according to one embodiment of this application is shown.

[0030] Figure 3 A cross-sectional view of a consumable box according to one embodiment of this application is shown.

[0031] Figure 4 It shows Figure 3 A magnified view of a portion of point A in the middle.

[0032] Figure 5 A cross-sectional view of another state of the consumable box in one embodiment of this application is shown.

[0033] Figure 6 It shows Figure 5 A magnified view of a section at point B in the middle.

[0034] Figure 7 A schematic diagram of a label roll according to one embodiment of this application is shown.

[0035] Figure 8 A cross-sectional view of another state of the consumable box in one embodiment of this application is shown.

[0036] Figure 9 A schematic diagram showing another state of the consumable box in one embodiment of this application is illustrated.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Printer;

[0039] 2. Consumables box;

[0040] 10. Shell; 11. Second latching protrusion; 111. First reinforcing rib; 112. Second reinforcing rib; 10a. Bottom wall; 10b. Side wall; 12. Winding column;

[0041] 20. Label roll; 21. Roller; 211. Inner shaft; 2111. Limiting component; 2112. Third reinforcing rib; 212. Outer shaft; 22. Label paper;

[0042] 30. Elastic element; 31. First retaining protrusion;

[0043] 40. Cover;

[0044] X, the first direction; Y, the third direction. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0046] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0047] In related technologies, the printer's consumables cassette contains a label paper roll, which includes a spool and label paper wound around it. During printing, a rubber roller cooperates with the print head to press against the free end of the label paper. Driven by the rubber roller, the label paper exits in the paper output direction, causing the spool to rotate. At the end of printing, the rubber roller moves away from the print head, releasing the pressure on the free end of the label paper, and the spool stops rotating. At this point, the outer edge of the label paper is prone to unraveling. Before the next print, the label paper is reloaded. If the outer edge of the label paper has unraveled, it will be impossible to reload, resulting in subsequent printing problems.

[0048] To address the aforementioned issues, this application provides a consumable box. By incorporating an elastic element between the housing and the roll, the elastic element accumulates a force in a second direction opposite to the first direction as the roll rotates along the first direction to dispense paper. This allows the elastic element to store force to a preset limit after rotating the roll along the first direction by a predetermined angle. The force stored in the elastic element then drives the roll to rotate back along the second direction, ensuring that the label paper remains tightly wound around the roll and thus guaranteeing smooth subsequent printing.

[0049] The consumable cartridge provided in this application is used in a label printer. The consumable cartridge is detachably assembled with the main unit of the label printer, allowing it to be removed when consumables need to be replaced. Optionally, the main unit includes a roller and a printhead, such as a thermal printhead (TPH). The roller is positioned opposite the printhead and forms a printing channel through which consumables, such as label paper, can pass. The roller is movable relative to the printhead to engage with the printhead to press against or release the pressure on the free end of the consumable.

[0050] See Figures 1-4 In some embodiments, the consumable box 2 includes a housing 10, a label roll 20, and an elastic element 30. The material and shape of the housing 10 are not limited and can be adjusted according to design requirements. The label roll 20 includes a spool 21 and label paper 22 wound on the spool 21. The spool 21 is rotatably connected to the housing 10. When the label paper 22 is dispensed, it drives the spool 21 to rotate along a first direction X, such as counterclockwise or clockwise. The elastic element 30 is connected between the housing 10 and the spool 21. For example, both ends of the elastic element 30 are directly connected to the housing 10 and the spool 21, respectively, or at least one end of the elastic element 30 is indirectly connected to the housing 10 or the spool 21 by means of other connecting members.

[0051] After the spool 21 rotates along the first direction X by a first preset angle, the elastic deformation of the elastic element 30 stores force to a preset limit, thereby applying a force to the spool 21 along a second direction, where the first direction X is opposite to the second direction. The first preset angle is set, for example, according to the angle that the spool 21 needs to rotate during one printing cycle. Based on this, after the spool 21 rotates along the first direction X by a preset angle to store force to the preset limit, the force stored in the elastic element 30 drives the spool 21 to rotate back along the second direction, thereby keeping the outer periphery of the label paper 22 tightly wound around the spool 21, thus ensuring smooth subsequent printing.

[0052] In some embodiments, the elastic element 30 is configured to begin elastic deformation after the spool 21 rotates along the first direction X by a second preset angle. Thus, before the spool 21 rotates along the first direction X by the second preset angle, the resistance to rotation of the spool 21 is smaller, resulting in smoother paper output. Based on this, the first preset angle can be set according to the second preset angle and the angle by which the spool 21 needs to rotate during one printing cycle.

[0053] In some embodiments, one end of the elastic member 30 is connected to the spool 21, and the other end is configured to abut against the housing 10 and undergo elastic deformation when the spool 21 rotates in the first direction X. In this way, the connection between the elastic member 30, the spool 21, and the housing 10 is simple, and the elastic member 30 can sensitively respond to the rotation of the spool 21 to store force.

[0054] Optionally, the elastic element 30 has an initial state where it is not in contact with the housing 10 and a stored state where it has reached a preset limit. In the initial state, one end of the elastic element 30 is connected to the spool 21, and the other end is not in contact with the housing 10. In this way, the elastic element 30 can begin to undergo elastic deformation after the spool 21 rotates a certain angle along the first direction X.

[0055] Combined Figure 5 and Figure 6 In some embodiments, one end of the elastic element 30 is connected to the spool 21, and the other end extends along a third direction Y to form a first locking protrusion 31. The angle between the third direction Y and the radial direction of the spool 21 is less than 90°, for example, the angle is 0°, 30°, 45°, or 60°. In other words, the third direction Y is parallel to the radial direction of the spool 21, or the third direction Y is inclined relative to the radial direction of the spool 21. Further, the housing 10 includes a second locking protrusion 11. When the spool 21 rotates along the first direction X, the first locking protrusion 31 and the second locking protrusion 11 abut against each other, thereby realizing the storage of force by the elastic element 30.

[0056] Optionally, the second latching protrusion 11 extends radially along the spool 21, and the extension direction of the first latching protrusion 31 is inclined relative to the radial direction of the spool 21, that is, the third direction Y is inclined relative to the radial direction of the spool 21. For example, the spool 21 has a cross-section perpendicular to its axis, and the extension direction of the first latching protrusion 31 is parallel to the plane containing this cross-section. Thus, the first latching protrusion 31 occupies less space in the axial direction of the spool 21, which helps to reduce the volume of the consumable box 2. For example, the extension direction of the first latching protrusion 31 is inclined relative to the radial direction of the spool 21, and during the rotation of the spool 21 along the first direction X, the free end of the first latching protrusion 31 abuts against the second latching protrusion 11 before the end of the first latching protrusion 31 connected to the elastic member 30. Thus, the abutment between the first latching protrusion 31 and the second latching protrusion 11 is more stable, making it less likely for the first latching protrusion 31 to detach from the second latching protrusion 11 during the rotation of the spool 21 along the first direction X.

[0057] Optionally, the first latching protrusion 31 and the second latching protrusion 11 may have the same or different shapes, and the materials of the first latching protrusion 31 and the second latching protrusion 11 may be the same or different. This provides more options for the molding processes of the first latching protrusion 31 and the second latching protrusion 11. In an exemplary embodiment, the material of the first latching protrusion 31 is the same as the material of the elastic member 30; for example, the first latching protrusion 31 and the elastic member 30 are integrally molded. The material of the second latching protrusion 11 is the same as the material of the housing 10; for example, the second latching protrusion 11 and the housing 10 are integrally molded. This simplifies the molding process and saves production costs.

[0058] Continue reading Figure 5 and Figure 6 In some embodiments, the housing 10 includes a plurality of second latching protrusions 11, which are spaced apart along a first direction X. This allows the elastic element 30 to accumulate force to a preset limit more quickly, thereby making the function of the elastic element 30 in preventing the free end of the label paper 22 from unraveling by accumulating force to rotate the roll 21 more sensitive.

[0059] Optionally, a plurality of second latching protrusions 11 are evenly spaced along the first direction X. For example, the housing 10 includes two second latching protrusions 11, which are located at opposite ends of the radial direction of the reel 21. In this way, the elastic member 30 can more quickly accumulate force to a preset limit.

[0060] In some embodiments, the housing 10 includes a plurality of second latching protrusions 11 spaced apart along a first direction X, wherein a first reinforcing rib 111 is provided between at least two second latching protrusions 11. This can improve structural strength and reduce the risk of the second latching protrusions 11 breaking under stress.

[0061] In some embodiments, the housing 10 includes a plurality of second latching protrusions 11 arranged at intervals along a first direction X, and a first reinforcing rib 111 is provided between any two adjacent second latching protrusions 11, and the plurality of first reinforcing ribs 111 are connected to form a ring structure. In this way, the structural strength can be further improved.

[0062] In some embodiments, the abutment length between the first latching protrusion 31 and the second latching protrusion 11 is 1mm-4mm, for example, 2mm, 2.5mm, or 3mm. It is understood that when the abutment length between the first latching protrusion 31 and the second latching protrusion 11 is small, the first latching protrusion 31 may detach from the abutment with the second latching protrusion 11 during the deformation and storage process of the elastic element 30; when the abutment length between the first latching protrusion 31 and the second latching protrusion 11 is large, it occupies a large space, which is not conducive to the miniaturization of the consumable box 2. Therefore, this embodiment sets the abutment length between the first latching protrusion 31 and the second latching protrusion 11 to a moderate level, which ensures the stability of the abutment between the first latching protrusion 31 and the second latching protrusion 11 while also helping to reduce the volume of the consumable box 2.

[0063] Continue reading Figure 5 and Figure 6 In some embodiments, the housing 10 includes a bottom wall 10a, one end of the second latching protrusion 11 is connected to the bottom wall 10a, and the other end extends away from the bottom wall 10a. Optionally, the second latching protrusion 11 is integrally formed with the bottom wall 10a, which simplifies the molding process. Further, when the elastic member 30 recovers its deformation, the distance between the end faces of the first latching protrusion 31 and the second latching protrusion 11 away from the bottom wall 10a is 1.5mm-2.5mm, for example, 1.8mm, 2mm, or 2.2mm. It is understood that when this distance is small, the first latching protrusion 31 is prone to detach from the free end of the second latching protrusion 11 during the rotation of the scroll 21, causing the elastic member 30 to be unable to store energy; when this distance is large, it occupies a large space, which is not conducive to the miniaturization of the consumable box 2. Based on this, this embodiment sets it to 1.5mm-2.5mm, which not only ensures the stability of the mutual contact between the first latching protrusion 31 and the second latching protrusion 11, but also helps to reduce the volume of the consumable box 2.

[0064] In some embodiments, one end of the elastic member 30 is connected to the spool 21, and the other end extends along a third direction Y to form a first latching protrusion 31, the angle between the third direction Y and the radial direction of the spool 21 being less than 90°. The housing 10 includes a plurality of second latching protrusions 11 spaced apart along a first direction X. When the spool 21 rotates along the first direction X, the first latching protrusions 31 abut against the second latching protrusions 11. A first reinforcing rib 111 is provided between any two adjacent second latching protrusions 11, and the plurality of first reinforcing ribs 111 are connected to form a ring structure. The first latching protrusion 31 is located within the ring structure, and the distance between the first latching protrusion 31 and the inner wall 10b of the ring structure is 0.3mm-1mm. Thus, space is reserved between the first latching protrusion 31 and the inner wall of the ring structure for the radial expansion that the elastic member 30 may need during the power storage process, thereby preventing the first latching protrusion 31 from scraping against the inner wall of the ring structure, thus ensuring smooth paper output. Furthermore, the reserved space does not occupy too much space, which helps to reduce the volume of the consumable box 2.

[0065] Continue reading Figure 5 and Figure 6 In some embodiments, the housing 10 includes a second latching protrusion 11, which abuts against the elastic member 30 when the spool 21 rotates in the first direction X; a second reinforcing rib 112 is provided at the connection between the second latching protrusion 11 and the housing 10. This improves the structural strength and reduces the risk of the second latching protrusion 11 breaking under stress.

[0066] In some embodiments, the housing 10 includes a plurality of second latching protrusions 11, wherein a first reinforcing rib 111 is provided between at least two second latching protrusions 11; the first reinforcing rib 111 and the second reinforcing rib 112 are integrally formed. This reduces the risk of breakage of the first latching protrusion 31 and the second latching protrusion 11 under stress, simplifies the molding process, and reduces production costs.

[0067] Combined Figure 7 In some embodiments, the housing 10 is provided with a winding post 12, which is integrally formed with the housing 10, for example. The reel 21 includes an inner shaft 211 and an outer shaft 212 connected to each other. The inner shaft 211 is rotatably connected to the winding post 12, and the outer shaft 212 surrounds the inner shaft 211; the label roll 20 is wound around the outer shaft 212. In this way, the inner shaft 211 and the reel 211 are connected to achieve a rotatable connection between the reel 21 and the housing 10, while the outer shaft 212 is provided for the label roll 20. Furthermore, the inner shaft 211 and the outer shaft 212 can be connected by the outer shaft 212 being sleeved on the inner shaft 211, thereby reducing the space occupied by the reel 21 and thus reducing the volume of the consumable box 2.

[0068] In some embodiments, the elastic element 30 is connected between the housing 10 and the inner shaft 211. Exemplarily, the elastic element 30 is a torsion spring, which is sleeved on the inner shaft 211. This fully utilizes the space between the inner shaft 211 and the outer shaft 212, thereby reducing the volume of the consumable box 2. Furthermore, the space formed by the outer shaft 212 and the inner shaft 211 can provide a certain limiting effect on the elastic element 30, keeping it stable during the force-accumulating process.

[0069] In some embodiments, a limiting member 2111 is provided on the inner shaft 211. The limiting member 2111 is located on the side of the elastic member 30 away from the winding post 12 to restrict the movement of the elastic member 30 in a direction away from the winding post 12. In this way, the stability of the elastic member 30 during the power storage process can be improved.

[0070] In some embodiments, a third reinforcing rib 2112 is provided between the inner shaft 211 and the outer shaft 212. This can improve the structural strength of the roll 21 and reduce the risk of breakage at the connection between the inner shaft 211 and the outer shaft 212.

[0071] In some embodiments, a limiting member 2111 is provided on the inner shaft 211. The limiting member 2111 is located on the side of the elastic member 30 opposite to the winding column 12 to restrict the axial movement of the elastic member 30. The limiting member 2111 and the third reinforcing rib 2112 are integrally formed. In this way, the stability of the elastic member 30 during the force storage process is improved, the risk of breakage at the connection between the inner shaft 211 and the outer shaft 212 is reduced, and the molding process is simplified.

[0072] Combination Figure 3 and Figure 8 In some embodiments, the consumable box 2 further includes a cover 40, which closes with the housing 10 to form a cavity; the label roll 20 is located within the cavity. Thus, the cavity formed by the cover 40 and the housing 10 can isolate the label 22 from the external structure, thus protecting the label 22.

[0073] In some embodiments, the distance between the surface of the cover 40 facing the label roll 20 and the label roll 20 is 0.2mm-1mm, for example, 0.3mm, 0.5mm, or 0.8mm. This reduces the likelihood of friction between the label roll 20 and the cover 40 during rotation, thereby lowering the risk of damage to the label paper 22 and ensuring smooth operation of the label roll 20's reel 21. Furthermore, due to the small distance, the label roll 20 is less prone to vertical movement during rotation, improving the stability of the label roll 20's rotation and the force storage of the elastic element 30.

[0074] In some embodiments, the housing 10 includes a bottom wall 10a and a side wall 10b, one end of the side wall 10b being connected to the bottom wall 10a, and the other end extending away from the bottom wall 10a; the axial direction of the spool 21 is parallel to the extending direction of the side wall 10b; the distance between the label paper 22 and the side wall 10b when the label paper 22 is full is 1mm-2mm, for example, 1.2mm, 1.5mm, or 1.8mm. Thus, even if the elastic element 30 fails to charge when the label paper 22 is full, the free end of the label paper 22 will not immediately fill the entire space after unfurling. Based on this, even if the elastic element 30 fails to charge, the label paper 22 has a high probability of successfully returning to its original position. Simultaneously, due to the small distance, the space occupied is small, thereby reducing the volume of the consumable box 2.

[0075] See Figure 1 Based on the same inventive purpose, this application also provides a printer 1, which includes the consumable box 2 of the above embodiments.

[0076] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" means at least two, for example, two, three, four, etc. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0077] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A consumable box, characterized in that, include: case; A label roll includes a spool and label paper wound on the spool, the spool being rotatably connected to the housing, and the label paper being able to drive the spool to rotate in a first direction when it is being dispensed. An elastic element connects the housing and the reel; Wherein, after the spool rotates along the first direction by a first preset angle, the elastic deformation of the elastic element stores force to a preset limit, so as to apply a force to the spool along the second direction, the first direction being opposite to the second direction.

2. The consumable box according to claim 1, characterized in that, The elastic element is configured to begin elastic deformation after the spool rotates a second preset angle along the first direction.

3. The consumable box according to claim 1, characterized in that, One end of the elastic element is connected to the spool, and the other end is configured to abut against the housing and undergo elastic deformation when the spool rotates in the first direction.

4. The consumable box according to claim 1, characterized in that, One end of the elastic element is connected to the reel, and the other end extends in a third direction to form a first latching protrusion. The housing includes a second latching protrusion, and when the scroll rotates in the first direction, the first latching protrusion and the second latching protrusion abut against each other. The angle between the third direction and the radial direction of the reel is less than 90°.

5. The consumable box according to claim 4, characterized in that, The housing includes a plurality of second latching protrusions, which are spaced apart along the first direction.

6. The consumable box according to claim 5, characterized in that, At least two of the second card protrusions are provided with a first reinforcing rib.

7. The consumable box according to claim 5, characterized in that, A first reinforcing rib is provided between any two adjacent second card protrusions, and multiple first reinforcing ribs are connected to form a ring structure.

8. The consumable box according to claim 4, characterized in that, The length of the first and second protrusions abutting each other is 1mm-4mm.

9. The consumable box according to claim 4, characterized in that, The housing includes a bottom wall, one end of the second latch is connected to the bottom wall, and the other end extends in a direction away from the bottom wall; When the elastic element recovers its deformation, the distance between the end faces of the first and second locking protrusions away from the bottom wall is 1.5mm-2.5mm.

10. The consumable box according to claim 1, characterized in that, One end of the elastic element is connected to the spool, and the other end extends along a third direction to form a first locking protrusion. The angle between the third direction and the radial direction of the spool is less than 90°. The housing includes a plurality of second latching protrusions arranged at intervals along the first direction. When the scroll rotates along the first direction, the first latching protrusions and the second latching protrusions abut against each other. Among them, a first reinforcing rib is provided between any two adjacent second card protrusions, and multiple first reinforcing ribs are connected to form a ring structure; The first protrusion is located within the annular structure, and the distance between the first protrusion and the inner sidewall of the annular structure is 0.3mm-1mm.

11. The consumable box according to claim 1, characterized in that, The housing includes a second latching protrusion, which is used to abut against the elastic element when the spool rotates in the first direction. The second reinforcing rib is provided at the connection between the second protrusion and the housing.

12. The consumable box according to claim 11, characterized in that, The housing includes a plurality of second latching protrusions, wherein a first reinforcing rib is provided between at least two second latching protrusions; The first reinforcing rib and the second reinforcing rib are an integral structure.

13. The consumable box according to claim 1, characterized in that, The housing is provided with a winding column; The reel includes an inner shaft and an outer shaft connected to each other. The inner shaft is rotatably connected to the winding column, and the outer shaft surrounds the inner shaft. The label paper is wound around the outer shaft.

14. The consumable box according to claim 13, characterized in that, The elastic element is connected between the housing and the inner shaft.

15. The consumable box according to claim 14, characterized in that, The inner shaft is provided with a limiting member, which is located on the side of the elastic member away from the winding post, so as to restrict the movement of the elastic member in a direction away from the winding post.

16. The consumable box according to claim 13, characterized in that, A third reinforcing rib is provided between the inner shaft and the outer shaft.

17. The consumable box according to claim 16, characterized in that, The inner shaft is provided with a limiting member, which is located on the side of the elastic member opposite to the winding column, so as to restrict the elastic member from moving axially. The limiting component and the third reinforcing rib are an integral structure.

18. The consumable box according to claim 1, characterized in that, The consumable box also includes a cover, which is closed with the shell to form a cavity; The label roll is located within the cavity.

19. The consumable box according to claim 18, characterized in that, The distance between the side surface of the cover facing the label roll and the label roll is 0.2mm-1mm.

20. The consumable box according to claim 1, characterized in that, The housing includes a bottom wall and a side wall, one end of the side wall is connected to the bottom wall, and the other end extends away from the bottom wall; The axial direction of the scroll is parallel to the extension direction of the sidewall; The distance between the label paper and the side wall when the label paper is fully covered is 1mm-2mm.

21. A printer, characterized in that, Includes the consumable box as described in any one of claims 1-20.

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