Driving head assembly, cartridge, and image forming apparatus

Abstract

The utility model relates to the technical field of image forming, in particular to a driving head assembly, a box and image forming equipment. The driving head assembly comprises a mounting base, a first driving piece and a second driving piece, and the first driving piece and the second driving piece are oppositely mounted on the mounting base. The driving head assembly has an initial state and a working state, and in the initial state, the first driving part and the second driving part can move relative to the mounting base under the action of external force and are far away from each other in the radial direction of the driving head assembly, so that the driving head assembly is switched to the working state from the initial state. The driving diameter of the driving head assembly is increased, so that the driving force of the image forming equipment is reduced, the service life of the driving head assembly is prolonged, and the working stability of the image forming equipment is improved.

Description

Technical Field

[0001] This application relates to the field of image forming technology, and more particularly to a drive head assembly, a cartridge, and an image forming apparatus. Background Technology

[0002] Image forming equipment, such as laser printers and copiers, all contain a developing cartridge. The developing cartridge is an important component of image forming equipment.

[0003] The developing cartridge transmits force through a drive head coupling mechanism. Currently, most drive head coupling methods use a shaft-groove (non-circular) fit, based on the torque formula T=F. As can be seen from S, in order to achieve a specific torque transmission, the greater the distance between the point of force application on the drive head and the center line, the smaller the force required by the drive head. However, due to the assembly requirements of the developing cartridge, the outer diameter of the drive head must be less than or equal to that of the drive bearing. This coupling method results in a small diameter of the drive head.

[0004] According to the torque formula, the driving head of the image forming device requires a large force. This high driving force results in a shorter lifespan for the driving head, necessitates higher motor output torque and the selection of better materials, which to some extent increases component costs and design complexity. Utility Model Content

[0005] This application provides a drive head assembly, a cartridge, and an image forming apparatus, which aim to increase the drive diameter of the drive head assembly and extend its service life.

[0006] This application provides a driving head assembly in a first aspect, for being disposed on a cartridge, the cartridge being detachably mounted to an image forming apparatus, the driving head assembly comprising:

[0007] Mounting base;

[0008] A first driving member and a second driving member are mounted opposite to each other on the mounting base;

[0009] The drive head assembly has an initial state and a working state;

[0010] In the initial state, the first drive member and the second drive member are capable of moving relative to the mounting base under the action of an external force and moving away from each other radially along the drive head assembly, so that the drive head assembly switches from the initial state to the working state.

[0011] In one possible design, the first drive member includes a first drive bracket and a first drive wing, the first drive bracket being rotatably connected to the mounting base, and the first drive wing being connected to the first drive bracket.

[0012] The second driving component includes a second driving bracket and a second driving wing, the second driving bracket being rotatably connected to the mounting base, and the second driving wing being connected to the second driving bracket;

[0013] The ends of the first drive bracket and the second drive bracket that are away from the mounting base are close to each other, and the first drive wing and the second drive wing are arranged back to back;

[0014] The first drive bracket and the second drive bracket can be pushed to rotate relative to the mounting base under the action of an external force, and move away from each other radially along the drive head assembly, so that the drive head assembly switches from the initial state to the working state.

[0015] In one possible design, the first drive wing and the first drive bracket are rotatably connected via a first connecting shaft;

[0016] The first driving member further includes a first elastic member, which is mounted on the first connecting shaft. One end of the first elastic member is connected to the first driving wing, and the other end is connected to the first driving bracket. The first elastic member can restrict the first driving wing from rotating relative to the first driving bracket.

[0017] The second drive wing and the second drive bracket are rotatably connected via a second connecting shaft;

[0018] The second driving member further includes a second elastic member, which is mounted on the second connecting shaft. One end of the second elastic member is connected to the second driving wing, and the other end is connected to the second driving bracket. The second elastic member can restrict the rotation of the second driving wing relative to the second driving bracket.

[0019] In one possible design, the first drive wing and the first drive bracket are fixedly connected; or, the first drive wing and the first drive bracket are an integral structure.

[0020] The second drive wing and the second drive bracket are fixedly connected; or, the second drive wing and the second drive bracket are an integral structure.

[0021] In one possible design, the drive head assembly further includes a third elastic element;

[0022] Under the action of the third elastic element, the first drive bracket and the second drive bracket can rotate relative to the mounting base and move closer to each other radially along the drive head assembly, so that the drive head assembly switches from the working state to the initial state.

[0023] In one possible design, the third elastic element is a ring structure;

[0024] The first drive bracket has a first limiting groove on the side facing away from the second drive bracket, and the second drive bracket has a second limiting groove on the side facing away from the first drive bracket.

[0025] Part of the third elastic element is engaged in the first limiting groove and the second limiting groove.

[0026] In one possible design, the first drive bracket is provided with a first guide surface, the second drive bracket is provided with a second guide surface, and the first guide surface is disposed opposite to the second conductive surface;

[0027] When the first drive bracket and the second drive bracket are close together, the first guide surface and the second guide surface form a guide opening.

[0028] In one possible design, the first drive bracket is provided with a first limiting block, and the mounting base is provided with a first mating groove;

[0029] When the drive head assembly is in the working state, the first limiting block engages with the first mating groove.

[0030] The second drive bracket is provided with a second limiting block, and the mounting base is provided with a second mating groove;

[0031] When the drive head assembly is in the working state, the second limiting block engages with the second mating groove.

[0032] In a second aspect, this application provides a box, the box comprising:

[0033] Box body;

[0034] A drive head assembly is mounted on the housing, and the drive head assembly is the drive head assembly described above.

[0035] This application provides an image forming apparatus in a third aspect for mounting the box as described above, the image forming apparatus comprising:

[0036] The device body is provided with a body drive head, the body drive head is provided with a mating groove, and the side wall of the mating groove is provided with a first slot and a second slot.

[0037] A linkage mechanism, which is mounted on the device body and is movable relative to the device body;

[0038] The linkage mechanism is used to drive the first drive member and the second drive member in the drive head assembly of the box to move, so that the first slot and the second slot can respectively engage with the first drive member and the second drive member.

[0039] In this embodiment, by setting a linkage mechanism and driving head assembly for driving coupling, the driving force arm of the first and second driving members of the driving head assembly is extended, increasing the driving diameter of the driving head assembly and the main body driving head. This helps to reduce the driving force of the image forming device, extend the life of the main body driving head and the driving head assembly, and improve the working stability of the image forming device.

[0040] 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

[0041] Figure 1 This is a schematic diagram of the structure of the image forming apparatus provided in this application;

[0042] Figure 2 A cross-sectional schematic diagram showing the drive coupling between the box and the device body;

[0043] Figure 3 This is a cross-sectional schematic diagram of a portion of the equipment body and connecting rod structure (with the ejector pin extending into the mating groove);

[0044] Figure 4 This is a cross-sectional schematic diagram of a portion of the equipment body and connecting rod structure (ejector pin exiting the mating groove);

[0045] Figure 5 This is a schematic diagram of the linkage mechanism provided in this application when the ejector pin is not extended;

[0046] Figure 6 A schematic diagram of the linkage mechanism provided in this application when the ejector pin is extended;

[0047] Figure 7 This is a schematic diagram of the structure of the on-board drive head assembly provided in this application;

[0048] Figure 8 This is a schematic diagram of the structure of the drive head assembly provided in this application;

[0049] Figure 9 This is a cross-sectional view of the drive head assembly and the main drive head provided in this application in a non-coupling state;

[0050] Figure 10 A cross-sectional schematic diagram showing the first drive component and the main drive head in a mating state provided in this application;

[0051] Figure 11 for Figure 8 Enlarged diagram of section A in the middle;

[0052] Figure 12 for Figure 8 Enlarged schematic diagram of section B in the middle;

[0053] Figure 13 for Figure 8 Enlarged schematic diagram of section C.

[0054] Figure label:

[0055] 1'-Drive force receiving unit;

[0056] 11´-First drive head;

[0057] 2´- Rotational force drive unit;

[0058] 21'-Second drive head;

[0059] 1-Drive head assembly;

[0060] 11-Mounting base;

[0061] 111 - First mating groove;

[0062] 112 - Second mating groove;

[0063] 12-First driving component;

[0064] 12a - Guide port;

[0065] 121 - First drive bracket;

[0066] 121a - First limiting groove;

[0067] 121b - First guide surface;

[0068] 121c - First limit block;

[0069] 122 - First Drive Wing;

[0070] 123 - First connecting shaft;

[0071] 124 - First elastic element;

[0072] 13-Second driving component;

[0073] 131 - Second drive bracket;

[0074] 131a - Second limiting groove;

[0075] 131b - Second guide surface;

[0076] 131c - Second limit block;

[0077] 132 - Second drive wing;

[0078] 133 - Second connecting shaft;

[0079] 134 - Second elastic element;

[0080] 14-Third elastic element;

[0081] 2 boxes;

[0082] 21 - Box body;

[0083] 3-Image forming apparatus;

[0084] 31-Equipment body;

[0085] 31a - Drive gear set;

[0086] 311-Body drive head;

[0087] 311a - Mating groove;

[0088] 311a1 - First card slot;

[0089] 311a2 - Second card slot;

[0090] 312-Slide;

[0091] 32-Linkage mechanism;

[0092] 321 - First Link;

[0093] 321a - Slider;

[0094] 321b - Socket;

[0095] 322 - Second Link;

[0096] 322a - Pressing part;

[0097] 322b - Connecting part;

[0098] 323-Thimble;

[0099] 323a - Promotion Department.

[0100] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. Detailed Implementation

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] This embodiment provides an image forming apparatus, which is a multifunctional image forming apparatus with functions such as printing, copying, scanning, and faxing.

[0107] Figure 1 The diagram shows an image forming apparatus 3, which includes an apparatus body 31 and a housing 2, with the housing 2 mounted on the apparatus body 31.

[0108] Among them, box 2 can be printing consumables such as developing box, drum box and toner box, and the specific design can be set according to the actual situation. This embodiment does not limit it here.

[0109] Figure 2 The diagram shows a connection between a box and a device body in one embodiment of the prior art. The device body is provided with a rotational force driving unit 2', and the box is provided with a driving force receiving unit 1'. After the driving end of the rotational force driving unit 2' and the receiving end of the driving force receiving unit 1' cooperate with each other, they can transmit the rotational driving force to the driving force receiving unit, thereby driving the driving force receiving unit inside the box to rotate.

[0110] Specifically, the driving force receiving unit 1' is equipped with a first driving head 11', and the rotational force driving unit 2' is equipped with a second driving head 21', which cooperate with each other. The first driving head 11' is a shaft structure, and the second driving head 21' is a groove structure. The driving coupling method between the first driving head 11' and the second driving head 21' is a shaft-groove fit (non-circular). According to the torque formula T=F... In this configuration, the drive head has a small diameter and requires a large driving force, which makes the drive head prone to damage.

[0111] In response, this embodiment provides an image forming apparatus to solve the aforementioned technical problems.

[0112] In this embodiment, the image forming apparatus includes an apparatus body and a linkage mechanism, with a housing detachably mounted on the apparatus body. When the housing is mounted on the apparatus body and the apparatus body door is closed, the linkage mechanism can push the driven end of the housing to engage with the driving end of the apparatus body, achieving drive coupling between the housing and the apparatus body. When the apparatus body door is opened, the linkage exerts no pushing force on the housing, and the driven end of the housing can disengage from the driving end of the apparatus body, facilitating the removal of the housing from the apparatus body and enabling convenient replacement and maintenance by the user.

[0113] The following section will describe in detail the mating structure of the linkage mechanism, the housing, and the equipment body with reference to the accompanying drawings.

[0114] like Figure 3 and Figure 4 The diagram shown is a cross-sectional view of part of the equipment body and connecting rod structure. Please refer to the reference diagram. Figure 3 and Figure 4 The device body 31 is provided with a drive gear set 31a and a body drive head 311. The drive gear set 31a can drive the body drive head 311 to rotate under the drive of the drive device.

[0115] Please continue to refer to the reference. Figure 3 and Figure 4 The main body drive head 311 is provided with a mating groove 311a, and the inner sidewall of the mating groove 311a has at least a first slot 311a1 and a second slot 311a2 that are disposed opposite to each other. The first slot 311a1 and the second slot 311a2 are used to engage with a part of the structure of the drive head assembly.

[0116] Please continue to refer to the reference. Figure 3 and Figure 4 The linkage mechanism 32 is installed on the equipment body 31, and part of the structure of the linkage mechanism 32 can be driven to extend into the mating groove 311a (e.g. Figure 3 ) or exit the mating slot 311a (e.g. Figure 4 ).

[0117] Figure 5 and Figure 6 The diagram shown is a schematic of linkage mechanism 32, in which... Figure 5 This is a schematic diagram showing that the ejector pin 323 in the linkage mechanism 32 is not extended. Figure 6 The diagram shows the extension of the ejector pin 323 in the linkage mechanism 32. Please refer to the reference diagram. Figure 5 and Figure 6The linkage mechanism 32 includes a first link 321, a second link 322, and a ejector pin 323 connected in sequence. The first link 321, the second link 322, and the ejector pin 323 are mounted on the device body 31 and can move relative to the device body 31. The linkage mechanism 32 is roughly a lever structure. The first link 321 can push the second link 322 to swing, so that the second link 322 drives the ejector pin 323 to perform telescopic movement.

[0118] Please refer to the references for details. Figure 5 and Figure 6 The device body 31 is provided with a slide rail 312, and the first connecting rod 321 is provided with a slider 321a. The slider 321a slides and engages with the slide rail 312, so that the first connecting rod 321 can reciprocate along the device body 31. The end of the first connecting rod 321 near the second connecting rod 322 is also provided with a sleeve portion 321b, and the end of the second connecting rod 322 near the first connecting rod 321 is provided with a pressing portion 322a. The sleeve portion 321b has a frame structure, and part of the pressing portion 322a is inserted into the sleeve portion 321b and can move relative to the sleeve portion 321b. The end of the second connecting rod 322 near the ejector pin 323 is provided with a connecting portion 322b, which is connected to the ejector pin 323. The second link 322 has a roughly V-shaped rod structure, meaning that when the pressing part 322a is pressed, the connecting part 322b is lifted, and when the pressing part 322a is lifted, the connecting part 322b is pressed. The end of the ejector pin 323 away from the second link 322 is provided with a pushing part 323a, which has a conical structure.

[0119] When the door of the device body 31 is closed, the door pushes the first link 321 to move closer to the second link 322, causing the sleeve part 321b to gradually reduce its pressure on the pressing part 322a, that is, the pressing part 322a gradually lifts (meaning the pressing part 322a moves away from the device body 31 in the figure), so that the connecting part 322b gradually presses down (meaning the connecting part 322b moves closer to the device body 31 in the figure), thereby causing the connecting part 322b to drive the pushing part 323a of the ejector pin 323 to extend forward. Please refer to... Figure 3 In other words, when the door of the device body 31 is closed, the pushing part 323a of the ejector pin 323 can extend into the mating groove 311a.

[0120] When the door of the device body 31 is opened, the door pulls the first link 321 to move away from the second link 322, causing the sleeve part 321b to gradually increase its pressure on the pressing part 322a. That is, the pressing part 322a is gradually pressed down (meaning the pressing part 322a moves closer to the device body 31 in the figure), causing the connecting part 322b to gradually lift up (meaning the connecting part 322b moves away from the device body 31 in the figure). This causes the connecting part 322b to drive the pushing part 323a of the ejector pin 323 to retract backward. Please refer to... Figure 4 In other words, when the door of the device body 31 is opened, the pushing part 323a of the ejector pin 323 can exit the mating groove 311a.

[0121] Figure 7 The diagram shown is a partial cross-sectional view of the structure of box 2. Box 2 includes a box body 21 and a drive head assembly 1, which is mounted on the box body 21.

[0122] Figure 8 The diagram shows the structure of the drive head assembly 1. The drive head assembly 1 includes a mounting base 11, a first drive member 12, and a second drive member 13. The first drive member 12 and the second drive member 13 are mounted on the mounting base 11 relative to each other. Specifically, the first drive member 12 and the second drive member 13 are symmetrically mounted on the mounting base 11 along the radial direction R of the drive head assembly 1.

[0123] The drive head assembly 1 has an initial state and an operating state. In the initial state, the first drive member 12 and the second drive member 13 can move relative to the mounting base 11 under the action of an external force, and move away from each other along the radial direction R of the drive head assembly 1, so that the drive head assembly 1 switches from the initial state to the operating state. In the operating state, the first drive member 12 and the second drive member 13 can move relative to the mounting base 11 under the action of an external force, and move closer to each other along the radial direction R of the drive head assembly 1, so that the drive head assembly 1 switches from the operating state to the initial state.

[0124] It should be noted that the initial state refers to the state in which box 2 is installed on the device body 31, and the drive head assembly 1 of box 2 and the main drive head 311 of the device body 31 are not in a mating state. The working state refers to the state in which box 2 is installed on the device body 31, and the drive head assembly 1 of box 2 and the main drive head 311 of the device body 31 are in a mating state, and the main drive head 311 can drive the drive head assembly 1 to work.

[0125] Specifically, Figure 9 The diagram shown is a schematic diagram of the drive head assembly 1 and the main body drive head 311 of the device body 31 in a non-cooperative state. Figure 10 The diagram shown illustrates the engagement of the drive head assembly 1 and the main drive head 311 of the device body 31. Please refer to the diagram for further details. Figure 9 and Figure 10In the initial state ( Figure 9 The first driving member 12 and the second driving member 13 are disposed in the mating groove 311a. At this time, when the door of the device body 31 is closed, the pushing part 323a of the ejector pin 323 can extend into the mating groove 311a, and at the same time push the first driving member 12 and the second driving member 13 to move away from each other, so that a part of the structure of the first driving member 12 can be inserted into the first slot 311a1, realizing the snap-fit ​​engagement of the first driving member 12 with the first slot 311a1, and a part of the structure of the second driving member 13 can be inserted into the second slot 311a2, realizing the snap-fit ​​engagement of the second driving member 13 with the second slot 311a2, thereby realizing the engagement between the driving head assembly 1 and the main body driving head 311. Figure 10 This enables the main body drive head 311 to drive the drive head assembly 1 to rotate, thus enabling the box 2 to work.

[0126] In working status ( Figure 10 When the door of the device body 31 is opened, the pushing part 323a of the ejector pin 323 can exit the mating groove 311a. At this time, the first driving member 12 and the second driving member 13 move towards each other under the action of external force, so that the first driving member 12 completely disengages from the first slot 311a1, thereby releasing the engagement between the first driving member 12 and the first slot 311a1, and the second driving member 13 completely disengages from the second slot 311a2, thereby releasing the engagement between the second driving member 13 and the second slot 311a2, so that the driving head assembly 1 can disengage from the mating groove 311a. Figure 9 This releases the drive head assembly 1 from the main drive head 311, allowing the box 2 to be removed from the device body 31.

[0127] In this embodiment, by setting the linkage mechanism 32 and the drive head assembly 1 for drive coupling linkage, the drive force arm of the first drive member 12 and the second drive member 13 of the drive head assembly 1 is extended, the drive diameter of the drive head assembly 1 and the main body drive head 311 is increased, which helps to reduce the drive force of the image forming device 3, helps to extend the life of the main body drive head 311 and the drive head assembly 1, and improves the working stability of the image forming device 3.

[0128] For further information, please refer to Figure 8The first driving component 12 includes a first driving bracket 121 and a first driving wing 122. The first driving bracket 121 is rotatably connected to the mounting base 11, and the first driving wing 122 is connected to the first driving bracket 121. The second driving component 13 includes a second driving bracket 131 and a second driving wing 132. The second driving bracket 131 is rotatably connected to the mounting base 11, and the second driving wing 132 is connected to the second driving bracket 131. The ends of the first driving bracket 121 and the second driving bracket 131 that are away from the mounting base 11 are close to each other, and the first driving wing 122 and the second driving wing 132 are arranged back to back.

[0129] Please continue to refer to the reference. Figure 9 and Figure 10 The first drive bracket 121 and the second drive bracket 131 can be pushed to rotate relative to the mounting base 11 under the action of external force, and move away from each other along the radial R of the drive head assembly 1, so that the drive head assembly 1 switches from the initial state to the working state.

[0130] Specifically, when the pushing part 323a of the ejector pin 323 extends into the mating groove 311a, the pushing part 323a can push the first drive bracket 121 and the second drive bracket 131 to move away from each other, and at the same time drive the first drive wing 122 and the second drive wing 132 to move away from each other, so that the first drive bracket 121 drives the first drive wing 122 to insert into the first slot 311a1, and the second drive bracket 131 drives the second drive wing 132 to insert into the second slot 311a2.

[0131] When the pushing part 323a of the ejector pin 323 exits the mating groove 311a, the first drive bracket 121 and the second drive bracket 131 can move towards each other under the action of external force, and at the same time drive the first drive wing 122 and the second drive wing 132 to move towards each other, so that the first drive bracket 121 drives the first drive wing 122 to disengage from the first slot 311a1, and the second drive bracket 131 drives the second drive wing 132 to disengage from the second slot 311a2, thereby realizing the disengagement of the drive head assembly 1 from the main body drive head 311.

[0132] In this embodiment, by setting a first drive wing 122 on the first drive bracket 121 and a second drive wing 132 on the second drive bracket 131, the transmission bracket of the drive head assembly 1 is enlarged, thereby increasing the transmission ratio of the drive head assembly 1 and improving the transmission efficiency.

[0133] Alternatively, in some embodiments, the first drive bracket 121 and the second drive bracket 131 can be snap-fit ​​connected to the mounting base 11. Under the action of external force, the first drive bracket 121 and the second drive bracket 131 are pushed to translate relative to the mounting base 11, so that the first drive bracket 121 and the second drive bracket 131 move closer to each other or further away from each other.

[0134] Furthermore, the first drive wing 122 and the first drive bracket 121 can be rotatably connected. Please refer to further details. Figure 8 The first drive wing 122 and the first drive bracket 121 are rotatably connected via the first connecting shaft 123. The first drive member 12 also includes a first elastic member 124, which is mounted on the first connecting shaft 123. One end of the first elastic member 124 is connected to the first drive wing 122, and the other end is connected to the first drive bracket 121. The first elastic member 124 can restrict the rotation of the first drive wing 122 relative to the first drive bracket 121.

[0135] In this embodiment, the first elastic element 124 can be a torsion spring. Under the elastic force of the first elastic element 124, the first elastic element 124 can support the first drive wing 122 and restrict the first drive wing 122 from rotating relative to the first drive bracket 121 without external force. When the first drive wing 122 is not engaged with the first slot 311a1, that is, when the first drive wing 122 is not inserted into the first slot 311a1 but abuts against the outer periphery of the first slot 311a1, the first drive wing 122 can compress the first elastic element 124 and rotate, reducing the risk of damage to the first drive wing 122. When the main body drive head 311 starts working, the first slot 311a1 can rotate to a position opposite to the first drive wing 122. At this time, under the action of the first elastic element 124, the first drive wing 122 can be engaged into the first slot 311a1.

[0136] In this embodiment, by setting a first drive bracket 121 and a first drive wing 122 to be rotatably connected, and by setting a first elastic element 124 between the first drive bracket 121 and the first drive wing 122, the first drive wing 122 and the first slot 311a1 are not fully matched during initial assembly, and there is no need to disassemble the box 2 for reassembly. When the image forming device 3 starts working, the first slot 311a1 and the first drive wing 122 can be matched, which is convenient for users.

[0137] The second drive wing 132 and the second drive bracket 131 can be rotatably connected. Please refer to the following for details. Figure 8 The second drive wing 132 and the second drive bracket 131 are rotatably connected via a second connecting shaft 133. The second drive member 13 also includes a second elastic member 134, which is mounted on the second connecting shaft 133. One end of the second elastic member 134 is connected to the second drive wing 132, and the other end is connected to the second drive bracket 131. The second elastic member 134 can restrict the rotation of the second drive wing 132 relative to the second drive bracket 131.

[0138] In this embodiment, the second elastic element 134 can be a torsion spring. Under the elastic force of the second elastic element 134, the second elastic element 134 can support the second drive wing 132 and restrict the second drive wing 132 from rotating relative to the second drive bracket 131 when no external force is applied. When the second drive wing 132 is not engaged with the second slot 311a2, that is, when the second drive wing 132 is not inserted into the second slot 311a2 but abuts against the outer peripheral part of the second slot 311a2, the second drive wing 132 can compress the second elastic element 134 and rotate, reducing the risk of damage to the second drive wing 132. When the main body drive head 311 starts working, the second slot 311a2 can rotate to a position opposite to the second drive wing 132. At this time, under the action of the second elastic element 134, the second drive wing 132 can be engaged into the second slot 311a2.

[0139] In this embodiment, by setting the second drive bracket 131 and the second drive wing 132 to be rotatably connected, and by setting the second elastic element 134 between the second drive bracket 131 and the second drive wing 132, the second drive wing 132 and the second slot 311a2 are not fully matched during the initial assembly, and there is no need to disassemble the box 2 for reassembly. When the image forming device 3 starts working, the second slot 311a2 and the second drive wing 132 can be matched, which is convenient for users.

[0140] Alternatively, in some embodiments, the first drive wing 122 and the first drive bracket 121 can be fixedly connected, and the second drive wing 132 and the second drive bracket 131 can be fixedly connected. Specifically, the first drive wing 122 and the first drive bracket 121 can be fixedly connected by welding or bolts or other connecting parts. The second drive wing 132 and the second drive bracket 131 can be fixedly connected by welding or bolts or other connecting parts.

[0141] Alternatively, in some embodiments, the first drive wing 122 and the first drive bracket 121 are integrally formed, and the second drive wing 132 and the second drive bracket 131 are integrally formed. Specifically, the first drive bracket 121 and the first drive wing 122 are integrally formed by injection molding (or casting). The second drive bracket 131 and the second drive wing 132 are integrally formed by injection molding (or casting).

[0142] Figure 11 Shown Figure 8 Please refer to the enlarged diagram of section A in the middle. Figure 8 and Figure 11 The drive head assembly 1 also includes a third elastic element 14. Under the action of the third elastic element 14, the first drive bracket 121 and the second drive bracket 131 can rotate relative to the mounting base 11 and move closer to each other along the radial direction R of the drive head assembly 1, so that the drive head assembly 1 switches from the working state to the initial state.

[0143] Specifically, please refer to the reference. Figure 9 and Figure 10 When the pushing part 323a of the ejector pin 323 extends into the mating groove 311a, the pushing part 323a pushes the first drive bracket 121 and the second drive bracket 131 to move away from each other. At this time, the first drive bracket 121 and the second drive bracket 131 pull the third elastic member 14 to unfold, so that the third elastic member 14 stores elastic potential energy.

[0144] When the pushing part 323a of the ejector pin 323 exits the mating groove 311a, the pushing part 323a exerts no pushing force on the first drive bracket 121 and the second drive bracket 131. At this time, the third elastic element 14 releases its elastic potential energy, and the third elastic element 14 pulls the first drive bracket 121 and the second drive bracket 131 to move towards each other, so as to drive the first drive wing 122 to disengage from the first slot 311a1 and the second drive wing 132 to disengage from the second slot 311a2, thereby switching the drive head assembly 1 to the initial state.

[0145] The third elastic element 14 can be a ring structure. The third elastic element 14 is sleeved on the outer periphery of the first drive bracket 121 and the second drive bracket 131. Specifically, the first drive bracket 121 is provided with a first limiting groove 121a on the side facing away from the second drive bracket 131, and the second drive bracket 131 is provided with a second limiting groove 131a on the side facing away from the first drive bracket 121. Part of the structure of the third elastic element 14 is stuck in the first limiting groove 121a and the second limiting groove 131a to restrict the third elastic element 14 from disengaging from the first drive bracket 121 and the second drive bracket 131, thereby ensuring the reliability of the operation of the drive head assembly 1.

[0146] Alternatively, the third elastic element 14 can be a helical spring, with one end connected to the first drive bracket 121 and the other end connected to the second drive bracket 131. The specific configuration can be determined according to actual conditions, and this embodiment does not impose any limitations.

[0147] Please continue to refer to Figure 9 and Figure 11 The first drive bracket 121 is provided with a first guide surface 121b, and the second drive bracket 131 is provided with a second guide surface 131b. The first guide surface 121b is disposed opposite to the second conductive surface. When the first drive bracket 121 and the second drive bracket 131 are close together, the first guide surface 121b and the second guide surface 131b form a guide opening 12a. In the initial state, the guide opening 12a is disposed toward the pushing part 323a of the ejector pin 323, so that the pushing part 323a of the ejector pin 323 can separate the first drive bracket 121 and the second drive bracket 131 from the guide opening 12a.

[0148] The first guide surface 121b and the second guide surface 131b can be inclined surfaces or curved surfaces. The specific design can be determined according to the actual situation, and this embodiment does not impose any limitations.

[0149] Figure 12 As shown Figure 8 Enlarged diagram of section B in the middle. Figure 13 Shown Figure 8 Please refer to the enlarged diagram of section C. Figure 12 and Figure 13 The first drive bracket 121 is provided with a first limiting block 121c, and the mounting base 11 is provided with a first mating groove 111. When the drive head assembly 1 is in the working state, the first limiting block 121c engages with the first mating groove 111. That is, when the drive head assembly 1 switches from the initial state to the working state, the first drive bracket 121 is pushed by the pushing part 323a of the ejector pin 323 to rotate relative to the mounting base 11, causing the first limiting block 121c to insert into the first mating groove 111. Through the engagement of the first limiting block 121c and the first mating groove 111, the synchronous transmission between the first drive bracket 121 and the mounting base 11 is further limited.

[0150] The second drive bracket 131 is provided with a second limiting block 131c, and the mounting base 11 is provided with a second mating groove 112. When the drive head assembly 1 is in the working state, the second limiting block 131c engages with the second mating groove 112. That is, when the drive head assembly 1 switches from the initial state to the working state, the second drive bracket 131 is pushed by the pushing part 323a of the ejector pin 323 to rotate relative to the mounting base 11, causing the second limiting block 131c to insert into the second mating groove 112. Through the engagement of the second limiting block 131c and the second mating groove 112, the second drive bracket 131 and the mounting base 11 are further limited to rotate synchronously.

[0151] 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 drive head assembly for mounting on a cartridge, the cartridge being detachably mounted to an image forming apparatus, characterized in that, The drive head assembly includes: Mounting base; A first driving member and a second driving member are mounted opposite to each other on the mounting base; The drive head assembly has an initial state and a working state; In the initial state, the first drive member and the second drive member are capable of moving relative to the mounting base under the action of an external force and moving away from each other radially along the drive head assembly, so that the drive head assembly switches from the initial state to the working state.

2. The drive head assembly according to claim 1, characterized in that, The first driving component includes a first driving bracket and a first driving wing. The first driving bracket is rotatably connected to the mounting base, and the first driving wing is connected to the first driving bracket. The second driving component includes a second driving bracket and a second driving wing, the second driving bracket being rotatably connected to the mounting base, and the second driving wing being connected to the second driving bracket; The ends of the first drive bracket and the second drive bracket that are away from the mounting base are close to each other, and the first drive wing and the second drive wing are arranged back to back; The first drive bracket and the second drive bracket can be pushed to rotate relative to the mounting base under the action of an external force, and move away from each other radially along the drive head assembly, so that the drive head assembly switches from the initial state to the working state.

3. The drive head assembly according to claim 2, characterized in that, The first drive wing and the first drive bracket are rotatably connected via a first connecting shaft; The first driving member further includes a first elastic member, which is mounted on the first connecting shaft. One end of the first elastic member is connected to the first driving wing, and the other end is connected to the first driving bracket. The first elastic member can restrict the first driving wing from rotating relative to the first driving bracket. The second drive wing and the second drive bracket are rotatably connected via a second connecting shaft; The second driving member further includes a second elastic member, which is mounted on the second connecting shaft. One end of the second elastic member is connected to the second driving wing, and the other end is connected to the second driving bracket. The second elastic member can restrict the rotation of the second driving wing relative to the second driving bracket.

4. The drive head assembly according to claim 2, characterized in that, The first drive wing and the first drive bracket are fixedly connected; or, the first drive wing and the first drive bracket are an integral structure. The second drive wing and the second drive bracket are fixedly connected; or, the second drive wing and the second drive bracket are an integral structure.

5. The drive head assembly according to claim 2, characterized in that, The drive head assembly also includes a third elastic element; Under the action of the third elastic element, the first drive bracket and the second drive bracket can rotate relative to the mounting base and move closer to each other radially along the drive head assembly, so that the drive head assembly switches from the working state to the initial state.

6. The drive head assembly according to claim 5, characterized in that, The third elastic element is a ring structure; The first drive bracket has a first limiting groove on the side facing away from the second drive bracket, and the second drive bracket has a second limiting groove on the side facing away from the first drive bracket. Part of the third elastic element is engaged in the first limiting groove and the second limiting groove.

7. The drive head assembly according to claim 2, characterized in that, The first drive bracket is provided with a first guide surface, and the second drive bracket is provided with a second guide surface, with the first guide surface and the second guide surface being disposed opposite to each other; When the first drive bracket and the second drive bracket are close together, the first guide surface and the second guide surface form a guide opening.

8. The drive head assembly according to claim 2, characterized in that, The first drive bracket is provided with a first limiting block, and the mounting base is provided with a first mating groove; When the drive head assembly is in the working state, the first limiting block engages with the first mating groove. The second drive bracket is provided with a second limiting block, and the mounting base is provided with a second mating groove; When the drive head assembly is in the working state, the second limiting block engages with the second mating groove.

9. A box, characterized in that, The box includes: Box body; A drive head assembly, which is mounted on the housing, wherein the drive head assembly is the drive head assembly according to any one of claims 1 to 8.

10. An image forming apparatus for mounting the box as claimed in claim 9, characterized in that, The image forming apparatus includes: The device body is provided with a body drive head, the body drive head is provided with a mating groove, and the side wall of the mating groove is provided with a first slot and a second slot. A linkage mechanism, which is mounted on the device body and is movable relative to the device body; The linkage mechanism is used to drive the first drive member and the second drive member in the drive head assembly of the box to move, so that the first slot and the second slot can respectively engage with the first drive member and the second drive member.

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