A carton and image forming apparatus

Abstract

The application relates to a paper box and an image forming device. The paper box comprises a box body, a transmission assembly and a driving assembly. The box body has a containing groove for storing paper. The box body is provided with a supporting plate, a connecting gear and a gear rack. The supporting plate is arranged in the containing groove, and the connecting gear is connected with the supporting plate. The transmission assembly can be connected with the connecting gear to drive the supporting plate to rotate through the connecting gear. The transmission assembly can be connected with the gear rack to drive the box body to move in a first direction. The driving assembly is connected with the transmission assembly and can drive the transmission assembly to move. In the application, the driving assembly drives the transmission assembly to move, which can control the rotation of the supporting plate and the change of the state of the paper box, so that the structure of the paper box is simplified, and the production cost of the paper box is reduced.

Description

Technical Field

[0001] This application relates to the field of image forming technology, and more particularly to a cardboard box and an image forming apparatus. Background Technology

[0002] Image forming equipment is a device that forms an image on a printing medium based on an input signal. Examples include printers, copiers, fax machines, and multifunction printers that integrate the functions of printers, copiers, and fax machines. The printing medium is generally paper, and the image forming equipment contains a paper tray.

[0003] To ensure stable paper supply, existing paper trays typically use a drive assembly and a transmission assembly to rotate the support plate, maintaining pressure between the paper and the feed rollers. Furthermore, to achieve automatic opening and closing, existing paper trays also require an additional drive assembly and transmission assembly, resulting in a complex structure and higher cost. Summary of the Invention

[0004] This application provides a paper box and an image forming apparatus to solve the problems of complex paper box structure and high production cost.

[0005] This application provides a paper box, comprising: a box body, a transmission assembly, and a drive assembly. The box body has a receiving slot for storing paper, and a support plate, a connecting gear, and a rack are disposed on the box body. The support plate is disposed in the receiving slot for lifting the paper, and the connecting gear is connected to the support plate. The transmission assembly is connected to the connecting gear to drive the support plate to rotate, and the transmission assembly is connected to the rack to drive the box body to move in a first direction. The drive assembly is connected to the transmission assembly and is capable of driving the transmission assembly to move.

[0006] In one possible design, the transmission assembly includes a transmission gear, a first drive gear, and a second drive gear. The transmission gear is connected to the drive assembly and is capable of driving the first drive gear or the second drive gear to rotate. The first drive gear meshes with the connecting gear, and the second drive gear meshes with the rack.

[0007] In one possible design, the transmission assembly has two operating states. When the transmission assembly is in the first operating state, the transmission gear is connected to the first drive gear and disconnected from the second drive gear. When the transmission assembly is in the second operating state, the transmission gear is connected to the second drive gear and disconnected from the first drive gear.

[0008] In one possible design, the transmission gear includes a first tooth and a second tooth, the first tooth covering a complete revolution of the transmission gear and the second tooth covering an incomplete revolution of the transmission gear, the transmission gear being connected to the drive assembly via the first tooth and to the first drive gear and / or the second drive gear via the second tooth.

[0009] In one possible design, the cardboard box further includes a first sensor, and a detection element is provided on the end face of the transmission gear, the first sensor being capable of detecting the detection element.

[0010] In one possible design, the detection element includes a first detection element and a second detection element, which are spaced apart on the end face of the transmission gear.

[0011] In one possible design, the transmission assembly further includes an idler gear, through which the transmission gear is connected to the first drive gear and / or the second drive gear.

[0012] In one possible design, the first drive gear and the connecting gear are arranged along a second direction, which is perpendicular to the first direction.

[0013] In one possible design, the drive assembly includes a drive member and a worm gear, the worm gear meshing with the transmission gear, and the drive member driving the worm gear to rotate.

[0014] In one possible design, the box body is provided with a through hole, and the paper box further includes a limiting member and a first elastic member. The limiting member is disposed in the box body, one end of the limiting member protrudes from the box body through the through hole, one end of the first elastic member abuts against the limiting member, and the other end abuts against the box body; the end of the limiting member protruding from the box body is used to cooperate with the limiting groove of the image forming device.

[0015] This application provides an image forming apparatus, including a body and a paper box, wherein the paper box is installed on the body and the paper box is as described above.

[0016] In one possible design, the machine body has a mounting groove, the box body of the paper box is mounted in the mounting groove, and a second elastic member is provided in the mounting groove, the second elastic member being able to abut against the box body.

[0017] In this application, paper is stored in a receiving slot. When the receiving slot is full, the paper is thicker, and there is a certain pressure between the paper and the feed roller, ensuring stable paper feeding. As the paper is consumed, the paper thickness decreases, and the pressure between the paper and the feed roller decreases. At this time, the drive assembly drives the transmission assembly 2 to rotate, thereby causing the connecting gear to rotate, which in turn causes the support plate to rotate. At least a portion of the paper is lifted, ensuring sufficient pressure between the paper and the feed roller, and ensuring stable paper feeding from the paper tray. The tray body can move along a first direction. When the tray body moves to be fully received in the mounting slot, the paper tray is in a closed state; when the tray body moves to be partially received in the mounting slot or completely removed from the mounting slot, the paper tray is in an open state. The drive assembly drives the transmission assembly to move, causing the tray body to move along the first direction, realizing the paper tray changing from an open state to a closed state or from a closed state to an open state. The transmission assembly and drive assembly can control both the rotation of the support plate and the change of the paper tray state, thereby simplifying the structure of the paper tray and reducing its cost.

[0018] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the cardboard box provided in this application in one specific embodiment;

[0020] Figure 2 for Figure 1 The main view, showing the cardboard box in the closed position;

[0021] Figure 3 for Figure 1 The main view, showing the cardboard box in the open position;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the transmission gear;

[0023] Figure 5 for Figure 1 Another structural schematic diagram of the transmission gear;

[0024] Figure 6 for Figure 1 Enlarged view of some structural components of the middle cardboard box;

[0025] Figure 7 This is a schematic diagram of the limiting groove in the mounting slot of an image forming device.

[0026] Figure label:

[0027] 1-Box body;

[0028] 11-Receiving groove;

[0029] 12-Support plate;

[0030] 13-Connecting gear;

[0031] 14-Rack;

[0032] 15-Limiting components;

[0033] 151 - Guide surface;

[0034] 2-Transmission components;

[0035] 21-Transmission gear;

[0036] 211 - First tooth;

[0037] 212 - Second tooth;

[0038] 213 - First inspection piece;

[0039] 214 - Second inspection piece;

[0040] 22-First drive gear;

[0041] 23-Second drive gear;

[0042] 24-Idle wheel;

[0043] 3-Driver components;

[0044] 31-Driver;

[0045] 32-worm gear;

[0046] 41-First sensor;

[0047] 42 - Second sensor;

[0048] 51-First elastic element;

[0049] 52 - Second elastic element;

[0050] 6-Limiting groove.

[0051] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0052] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0053] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0054] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0055] It should be understood that the term "and / or" used in this article is merely a description of 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, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0056] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0057] This application provides an image forming apparatus, which includes a body and a paper tray, the paper tray being mounted on the body. Specifically, the body is provided with a mounting slot, and the paper tray is mounted in the mounting slot.

[0058] This application provides a paper box, such as Figure 1 and Figure 2 As shown, the paper box includes: a box body 1, a transmission assembly 2, and a drive assembly 3. The box body 1 has a receiving groove 11 for storing paper. A support plate 12, a connecting gear 13, and a rack 14 are provided on the box body 1. The support plate 12 is disposed in the receiving groove 11 for lifting the paper. The connecting gear 13 is connected to the support plate 12. The transmission assembly 2 can be connected to the connecting gear 13 to drive the support plate 12 to rotate through the connecting gear 13. The transmission assembly 2 can be connected to the rack 14 to drive the box body 1 to move along the first direction X. The drive assembly 3 is connected to the transmission assembly 2 and can drive the transmission assembly 2 to move.

[0059] In this embodiment, such as Figure 1As shown, paper is stored in the receiving tank 11. When the receiving tank 11 is full of paper, the paper is relatively thick, and there is a certain pressure between the paper and the feed roller, which can ensure stable paper feeding. As the paper is consumed, the paper is thinner, and the pressure between the paper and the feed roller decreases. At this time, the drive assembly 3 drives the transmission assembly 2 to move, thereby driving the connecting gear 13 to rotate, which in turn causes the support plate 12 to rotate. At least a portion of the paper is lifted, thereby ensuring sufficient pressure between the paper and the feed roller, and ensuring stable paper feeding from the paper tray.

[0060] like Figure 2 and Figure 3 As shown, the box body 1 can move along the first direction X. When the box body 1 is fully accommodated in the mounting slot, the paper box is in the closed state; when the box body 1 is partially accommodated in the mounting slot or completely removed from the mounting slot, the paper box is in the open state. The drive assembly 3 drives the transmission assembly 2 to move, so that the box body 1 moves along the first direction X, realizing the paper box changing from the open state to the closed state or from the closed state to the open state.

[0061] The transmission assembly 2 and the drive assembly 3 can control both the rotation of the support plate 12 and the change of the paper box state, thereby simplifying the structure of the paper box and reducing its cost.

[0062] In one specific implementation, such as Figure 1 and Figure 2 As shown, the transmission assembly 2 includes a transmission gear 21, a first drive gear 22, and a second drive gear 23. The transmission gear 21 is connected to the drive assembly 3 and can drive the first drive gear 22 or the second drive gear 23 to rotate. The first drive gear 22 meshes with the connecting gear 13, and the second drive gear 23 meshes with the rack 14.

[0063] In this embodiment, such as Figure 1 and Figure 2 As shown, the drive assembly 3 drives the transmission gear 21, which in turn drives the first drive gear 22 to rotate. The first drive gear 22 then drives the connecting gear 13 to rotate, thereby controlling the support plate 12. Figure 2 and Figure 3 As shown, the drive assembly 3 drives the transmission gear 21, which in turn drives the second drive gear 23 to rotate. The second drive gear 23 then drives the rack 14 to move, thereby controlling the automatic opening and closing of the paper box.

[0064] In one specific embodiment, the transmission component 2 has two working states. When the transmission component 2 is in the first working state, the transmission gear 21 is connected to the first drive gear 22 and disconnected from the second drive gear 23. When the transmission component 2 is in the second working state, the transmission gear 21 is connected to the second drive gear 23 and disconnected from the first drive gear 22.

[0065] In this embodiment, when the transmission assembly 2 is in the first working state, the transmission gear 21 is connected to the first drive gear 22 and disconnected from the second drive gear 23, so that the transmission assembly 2 can indirectly drive the support plate 12 to rotate. At the same time, the driving force of the transmission assembly 2 will not be transmitted to the rack 14, keeping the paper box in the closed state.

[0066] When the transmission assembly 2 is in the second working state, the transmission gear 21 is connected to the second drive gear 23 and disconnected from the first drive gear 22. Therefore, the transmission assembly 2 can indirectly drive the box 1 to move along the first direction X. At the same time, the driving force of the transmission assembly 2 will not be transmitted to the first drive gear 22. Therefore, the first drive gear 22 can rotate under the drive of the connecting gear 13, and then separate or mesh with the connecting gear 13, so that the paper box can smoothly change from the closed state to the open state or from the open state to the closed state.

[0067] Specifically, such as Figure 4 and Figure 5 As shown, the transmission gear 21 includes a first tooth 211 and a second tooth. The first tooth 211 covers a complete revolution of the transmission gear 21, and the second tooth 212 covers an incomplete revolution of the transmission gear 21. The transmission gear 21 is connected to the drive assembly 3 through the first tooth 211 and to the first drive gear 22 and / or the second drive gear 23 through the second tooth 212.

[0068] In this embodiment, such as Figure 4 and Figure 5 As shown, the first tooth 211 covers a complete revolution of the transmission gear 21, thereby ensuring that the transmission gear 21 is always meshed with the worm 32; the second tooth 212 covers an incomplete revolution of the transmission gear 21, thereby enabling the transmission gear 21 to be connected to the first drive gear 22 and the second drive gear 23 respectively, so that the transmission assembly 2 can switch between the first working state and the second working state.

[0069] More specifically, the second drive gear 23 is a double gear, which can improve the stability of the box 1 when it moves, so that the box 1 will not deviate.

[0070] In one specific implementation, such as Figure 1 and Figure 2 As shown, the transmission assembly 2 also includes an idler wheel 24, and the transmission gear 21 is connected to the first drive gear 22 and the second drive gear 23 through the idler wheel 24.

[0071] In this embodiment, such as Figure 1 and Figure 2 As shown, the idler wheel 24 can transmit torque and change the direction of rotation, and at the same time, it can change the distance between the first drive gear 22, the second drive gear 23 and the transmission gear 21, which facilitates the arrangement and miniaturization of the carton structure.

[0072] In this application, two idler gears 24 are provided between the transmission gear 21 and the first drive gear 22, and two idler gears 24 are provided between the transmission gear 21 and the second drive gear 23, so that the rotation directions of the first drive gear 22, the second drive gear 23 and the transmission gear 21 are opposite.

[0073] In addition, the transmission assembly 2 may also have an idler wheel 24 provided only between the transmission gear 21 and the first drive gear 22, an idler wheel 24 provided only between the transmission gear 21 and the second drive gear 23, or no idler wheel 24 provided.

[0074] In one specific embodiment, the angle α of the portion of the transmission gear 21 covered by the second tooth 212 satisfies: α ≥ 180°. For example, the angle α can be 180°, 190°, 200°, 210°, 220°, etc.

[0075] Preferred, such as Figure 2 As shown, the two idler gears 24 on both sides of the transmission gear 21 are symmetrically arranged with respect to the transmission gear 21, and the line connecting the centers of the two idler gears 24 passes through the center of the transmission gear 21. Therefore, when the angle α of the portion of the transmission gear 21 covered by the second tooth 212 is 180°, the transmission gear 21 can rotate continuously by 180° to drive the support plate 12 to rotate or the rack 14 to move independently, thereby enabling the support plate 12 to rotate by a sufficient angle and the rack 14 to move by a sufficient distance.

[0076] Furthermore, when the positions of the two idler gears 24 on both sides of the transmission gear 21 are changed, the angle α of the portion of the transmission gear 21 covered by the second tooth 212 must also be changed accordingly. At the same time, by making the transmission assembly 2 have a reasonable transmission ratio, the support plate 12 can be moved to the limit position (that is, when there is only a small amount of paper or a single sheet of paper left in the receiving groove 11, the position of the support plate 12 can still ensure sufficient pressure between the paper and the feed roller).

[0077] In one specific implementation, such as Figure 1 and Figure 2 As shown, the cardboard box also includes a first sensor 41, and a detection element is provided on the end face of the transmission gear 21. The first sensor 41 is capable of detecting the detection element.

[0078] In this embodiment, such as Figure 1 and Figure 2As shown, the first sensor 41 can detect the phase of the transmission gear 21 by detecting the detection element, so as to control the rotation of the transmission gear 21, so that the paper box can work better and the image forming device is more intelligent.

[0079] Specifically, the detection components include a first detection component 213 and a second detection component 214. The first detection component 213 and the second detection component 214 are arranged at intervals on the end face of the transmission gear 21, so that the phase information of the transmission gear 21 obtained by the first sensor 41 through the detection components is more accurate.

[0080] The angle between the first detection element 213 and the second detection element 214 can be consistent with the angle α of the portion of the transmission gear 21 covered by the second tooth 212, specifically 180°, 190°, 200°, 210°, 220°, etc.

[0081] Furthermore, the angle between the first detection element 213 and the second detection element 214 may not be consistent with the angle α of the portion of the transmission gear 21 covered by the second tooth 212.

[0082] Taking the first detection element 213 and the second detection element 214 as an example, which are set at a distance of 180° from each other, and the second detection element 214 is located in the middle position near the second tooth 212, when the first sensor 41 detects the first detection element 213, the transmission assembly 2 is at the critical point between the first working state and the second working state, that is, the transmission gear 21 rotates counterclockwise to enter the first working state and rotates clockwise to enter the second working state; when the first sensor 41 detects the second detection element 214, the transmission assembly 2 is also at the critical point between the first working state and the second working state, that is, the transmission gear 21 rotates clockwise to enter the first working state and rotates counterclockwise to enter the second working state.

[0083] Furthermore, the initial state of the transmission gear 21 is such that the first sensor 41 can detect the state of the first detection element 213.

[0084] In one specific implementation, such as Figure 2 As shown, the first drive gear 22 and the connecting gear 13 are arranged along the second direction Y, which is perpendicular to the first direction X.

[0085] In this embodiment, such as Figure 2As shown, since the first drive gear 22 and the connecting gear 13 are arranged along the second direction Y, when the paper tray changes from the closed state to the open state, the connecting gear 13 will drive the first drive gear 22 to rotate. When the transmission assembly 2 is in the first working state, the transmission gear 21 is connected to the first drive gear 22, so that the connecting gear 13 cannot drive the first drive gear 22 to rotate. Therefore, when the transmission assembly 2 is in the first working state, the paper tray cannot be pulled out under external force, thereby effectively preventing paper theft when the image forming equipment is used as a public device.

[0086] At the same time, such as Figure 2 As shown, when the first drive gear 22 drives the connecting gear 13 to rotate counterclockwise, thereby causing the support plate 12 to lift the paper, the connecting gear 13 will be subjected to a force along the first direction X pointing into the mounting groove, thereby ensuring that the paper tray is in the closed state when the image forming equipment is working.

[0087] Specifically, the drive assembly 3 includes a drive element 31 and a worm gear 32. The worm gear 32 is sleeved on the output end of the drive element 31 and meshes with the transmission gear 21. The self-locking phenomenon between the transmission gear 21 and the worm gear 32 further ensures that the housing cannot be pulled out of the mounting slot under external force. The drive element 31 can be a DC motor or a stepper motor, etc.

[0088] In addition, the self-locking action between the transmission gear 21 and the worm 32 can keep the support plate 12 fixed in a certain position.

[0089] The working process of the cardboard box is explained in detail below:

[0090] When the image forming apparatus performs a printing task, the transmission gear 21 is in its initial state. As the paper in the receiving slot 11 is consumed, the drive assembly 3 drives the transmission gear 21 to rotate counterclockwise. The transmission gear 21 drives the first drive gear 22 to rotate clockwise through two idler gears 24. The first drive gear 22 drives the connecting gear 13 to rotate counterclockwise, thereby causing the support plate 12 to rotate counterclockwise and lift the paper. It is understandable that when the relative position of the support plate 12 and the paper changes, it is necessary to change the rotation direction of the support plate 12 to lift the paper.

[0091] When the paper in the receiving slot 11 is exhausted or a paper jam occurs, the drive assembly 3 drives the transmission gear 21 to rotate clockwise. The transmission gear 21 drives the first drive gear 22 to rotate counterclockwise through two idler gears 24. The first drive gear 22 drives the connecting gear 13 to rotate clockwise, thereby causing the support plate 12 to rotate to a horizontal state. At this time, the drive assembly 3 continues to drive the transmission gear 21 to rotate clockwise, and the drive assembly 2 changes from the first working state to the second working state. That is, the transmission gear 21 drives the first drive gear 22 to rotate counterclockwise through the two idler gears 24, thereby causing the box body 1 to move away from the mounting slot along the first direction X through the rack 14, realizing the change of the paper box from the closed state to the open state, so as to replenish paper or repair and maintain the paper box.

[0092] Furthermore, when the image forming equipment is used as a public facility, the paper tray will only change from a closed state to an open state after the administrator enters a password or obtains authentication through the interactive interface on the image forming equipment, thereby effectively preventing paper theft.

[0093] After replenishing paper or repairing / maintaining the cardboard box, the drive assembly 3 drives the transmission gear 21 to rotate counterclockwise. The drive gear 21 drives the second drive gear 23 to rotate clockwise through two idler gears 24, thereby driving the box body 1 to enter the mounting slot along the first direction X through the rack 14, until the transmission gear 21 returns to the initial state, realizing the transformation of the cardboard box from the open state to the closed state.

[0094] like Figure 2 and Figure 3 As shown, when the housing 1 enters the mounting slot, a second elastic element 52 is provided in the mounting slot to prevent the connecting gear 13 from colliding with and being damaged by the first drive gear 22. The second elastic element 52 can abut against the housing 1, thereby reducing the movement speed of the housing 1 and allowing the connecting gear 13 to slowly engage with the first drive gear 22. Specifically, the second elastic element 52 can be a spring, compression spring, etc.

[0095] Furthermore, the cardboard box also includes a second sensor 42, which can detect whether the box body 1 is installed in place, that is, whether the box body 1 is accommodated in the mounting slot, so that the image forming device can determine whether the cardboard box is in an open state or a closed state.

[0096] In one specific implementation, such as Figure 6 and Figure 7 As shown, the box body 1 is provided with a through hole. The paper box also includes a limiting member 15 and a first elastic member 51. The limiting member 15 is disposed inside the box body 1. One end of the limiting member 15 protrudes from the box body 1 through the through hole. One end of the first elastic member 51 abuts against the limiting member 15, and the other end abuts against the box body 1. The end of the limiting member 15 protruding from the box body 1 is used to cooperate with the limiting groove 6 of the image forming device.

[0097] In this embodiment, such as Figure 6 and Figure 7 As shown, when the limiting member 15 abuts against the side wall of the mounting groove, the limiting member 15 compresses the first elastic member 51 to retract into the box body 1, allowing the box body 1 to move smoothly along the first direction X. When the end of the limiting member 15 protruding from the box body 1 engages with the limiting groove 6, the cardboard box is in a closed state. The limiting member 15 can restrict the movement of the box body 1 relative to the mounting groove, further ensuring that the cardboard box remains in a closed state.

[0098] Specifically, the end of the limiting member 15 protruding from the box body 1 has a guide surface 151, which is a hemispherical surface or an inclined surface, so that the driving force of the second drive gear 23 on the box body 1 can gradually retract the limiting member 15 into the box body, release the cooperation between the limiting member 15 and the limiting groove 6, and realize the paper box changing from the closed state to the open state.

[0099] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cardboard box, characterized in that, The cardboard box includes: The box body (1) has a receiving groove (11) for storing paper. The box body (1) is provided with a support plate (12), a connecting gear (13) and a rack (14). The support plate (12) is disposed in the receiving groove (11) for lifting the paper. The connecting gear (13) is connected to the support plate (12). Transmission component (2); A drive component (3) is connected to the transmission component (2) and is capable of driving the transmission component (2) to move; The transmission assembly (2) includes a transmission gear (21), a first drive gear (22), and a second drive gear (23). The transmission gear (21) is connected to the drive assembly (3). The transmission gear (21) can drive the first drive gear (22) or the second drive gear (23) to rotate. The first drive gear (22) meshes with the connecting gear (13), and the second drive gear (23) meshes with the rack (14). The transmission assembly (2) can be connected to the connecting gear (13) to drive the support plate (12) to rotate through the connecting gear (13). The transmission assembly (2) can be connected to the rack (14) to drive the box body (1) to move along the first direction (X). The transmission gear (21) includes a first tooth (211) and a second tooth (212). The first tooth (211) covers a complete revolution of the transmission gear (21), and the second tooth (212) covers an incomplete revolution of the transmission gear (21). The transmission gear (21) is connected to the drive assembly (3) through the first tooth (211) and to the first drive gear (22) and / or the second drive gear (23) through the second tooth (212). The transmission assembly (2) has two working states: in the first working state, the second tooth (212) is connected to the first drive gear (22) and disconnected from the second drive gear (23); in the second working state, the second tooth (212) is connected to the second drive gear (23) and disconnected from the first drive gear (22).

2. The cardboard box according to claim 1, characterized in that, The cardboard box also includes a first sensor (41), and a detection element is provided on the end face of the transmission gear (21). The first sensor (41) is capable of detecting the detection element.

3. The cardboard box according to claim 2, characterized in that, The detection element includes a first detection element (213) and a second detection element (214), which are spaced apart on the end face of the transmission gear (21).

4. The paper box according to any one of claims 1-3, characterized in that, The transmission assembly (2) further includes an idler wheel (24), through which the transmission gear (21) is connected to the first drive gear (22) and / or the second drive gear (23).

5. The paper box according to any one of claims 1-3, characterized in that, The first drive gear (22) and the connecting gear (13) are arranged along a second direction (Y), which is perpendicular to the first direction (X).

6. The paper box according to any one of claims 1-3, characterized in that, The drive assembly (3) includes a drive member (31) and a worm (32), the worm (32) meshing with the transmission gear (21), and the drive member (31) driving the worm (32) to rotate.

7. The paper box according to any one of claims 1-3, characterized in that, The box body is provided with a through hole. The paper box also includes a limiting member (15) and a first elastic member (51). The limiting member (15) is disposed inside the box body (1). One end of the limiting member (15) protrudes from the box body (1) through the through hole. One end of the first elastic member (51) abuts against the limiting member (15) and the other end abuts against the box body (1). The limiting member (15) protrudes from one end of the box body (1) and is used to cooperate with the limiting groove (6) of the image forming device.

8. An image forming apparatus, characterized in that, The image forming apparatus includes a body and a paper tray, the paper tray being mounted on the body, and the paper tray being the paper tray according to any one of claims 1-7.

9. The image forming apparatus according to claim 8, characterized in that, The machine body has an installation groove, and the box body (1) of the paper box is installed in the installation groove. A second elastic member (52) is provided in the installation groove, and the second elastic member (52) can abut against the box body (1).

Images