Driving head assembly, cartridge, and image forming apparatus

Abstract

The invention 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 is used for being arranged on a box, the box is detachably installed on the image forming equipment, the driving head assembly comprises an installation base, a state switching piece, a first driving piece and a second driving piece, and the state switching piece is installed on the installation base and can move between a first position and a second position relative to the installation base. The first driving piece and the second driving piece are both installed on the installation base and can move relative to the installation base. And the state switching piece can be switched between a first position and a second position under the action of external force, so that the first driving piece and the second driving piece can be switched between a contraction state and an extension state. When the state switching piece is located at the first position, the first driving piece and the second driving piece contract inwards in the radial direction of the driving head assembly. When the state switching piece is located at the second position, the first driving piece and the second driving piece extend outwards in the radial direction of the driving head assembly.

Description

Technical Field

[0001] The present application relates to the field of image forming technology, and in particular to a drive head assembly, a box and an image forming device. Background Art

[0002] Image forming devices such as laser printers, copiers and other products are equipped with a developing cartridge inside. The developing cartridge is an important component in the image forming device.

[0003] The developer box realizes force transmission through the drive head coupling method. At present, most drive head coupling methods are shaft groove (non-circular) matching. According to the torque formula T=F S It can be seen that in this coupling method, to achieve a specific torque transmission, the greater the distance between the force application point on the drive head and the center line, the smaller the force required for the drive head. However, due to the assembly requirements of the developer cartridge, the outer diameter of the drive head needs to be ≤ the drive bearing. This coupling method results in a small diameter of the drive head.

[0004] According to the torque formula, the force required for the drive head of the image forming device is large. However, large driving force will result in a short life of the drive head, requiring a higher motor output torque and the selection of better materials, which to a certain extent increases the cost of parts and the difficulty of design. Summary of the invention

[0005] The present application provides a drive head assembly, a box and an image forming device, which are intended to increase the driving diameter of the drive head assembly and extend its service life.

[0006] In a first aspect, an embodiment of the present application provides a drive head assembly for being arranged on a cartridge, wherein the cartridge is detachably mounted on an image forming device, and the drive head assembly comprises: Mounting seat; A first driving member and a second driving member, wherein the first driving member and the second driving member are both mounted on the mounting seat and are capable of moving relative to the mounting seat; a state switching member, the state switching member being mounted on the mounting seat and being capable of moving between a first position and a second position relative to the mounting seat; The state switching member can be switched between a first position and a second position under the action of an external force, so that the first driving member and the second driving member can be switched between a contracted state and an extended state; When the state switching member is located at the first position, the first driving member and the second driving member are both retracted inwardly along the radial direction of the driving head assembly; When the state switching member is located at the second position, the first driving member and the second driving member both extend outwardly in the radial direction of the driving head assembly.

[0007] In a possible design, the state switching member is slidably mounted on the mounting seat; The first driving member and the second driving member are both connected to the state switching member; When the state switching member moves from the first position to the second position under the action of external force, the state switching member drives the first driving member and the second driving member to extend radially outward along the drive head assembly, or enables both the first driving member and the second driving member to be pushed to extend radially outward along the drive head assembly.

[0008] In a possible design, the first driving member includes a first connecting portion, and the first connecting portion is rotatably connected to the mounting seat via a first connecting shaft; The second driving member includes a second connecting portion, and the second connecting portion is rotatably connected to the mounting seat through a second connecting shaft.

[0009] In a possible design, the drive head assembly further includes a first elastic member; When the state switching member moves from the first position to the second position under the action of external force, under the action of the first elastic member, the first driving member and the second driving member can rotate relative to the mounting seat and extend radially outward along the drive head assembly.

[0010] In a possible design, the first driving member is provided with a first driving portion and a first clamping portion, and the first driving portion and the first clamping portion are connected to two ends of the first connecting portion; The second driving member is provided with a second driving portion and a second clamping portion, and the second driving portion and the second clamping portion are connected to two ends of the second connecting portion; When the state switching member moves from the first position to the second position under the action of external force, the first clamping portion and the second clamping portion move away from each other in the radial direction of the drive head assembly, and drive the first driving portion and the second driving portion to approach each other in the radial direction of the drive head assembly, and the first driving portion and the second driving portion both maintain contact with the state switching member.

[0011] In a possible design, the state switching member is provided with a guide segment, and the cross-sectional area of ​​the guide segment gradually decreases along a direction approaching the first driving member and the second driving member; When the state switching member moves from the first position to the second position under the action of an external force, the state switching member moves away from the first driving member and the second driving member, and the first driving part and the second driving part move along the guide section.

[0012] In a possible design, the drive head assembly further includes a second elastic member; The mounting seat is provided with a limiting column, one end of the second elastic member is connected to the limiting column, and the other end is connected to the state switching member; Under the action of the second elastic member, the state switching member can move from the second position to the first position, and the guide section can push the first driving part and the second driving part away from each other in the radial direction of the driving head assembly, so as to drive the first clamping part and the second clamping part to approach each other in the radial direction of the driving head assembly, so that the first driving member and the second driving member can switch from an extended state to a contracted state.

[0013] In a possible design, the state switching member is further provided with a limiting segment, and the limiting segment is connected to an end of the guide segment away from the first driving member and the second driving member; When the state switching member is located at the first position, the first driving part and the second driving part are both in contact with the limiting section, and the limiting section can limit the first driving member and the second driving member from extending outward.

[0014] In a possible design, the state switching member further includes a first limiting portion, the first limiting portion is connected to an end of the limiting section away from the first driving member and the second driving member, and the first limiting portion protrudes outwardly in the radial direction of the driving head assembly; The first limiting portion can limit the first driving portion and the second driving portion from being separated from the state switching member.

[0015] In a possible design, the state switching member is further provided with a stagnation section, and the stagnation section is connected to a side of the guide section close to the first driving member and the second driving member; When the state switching member is located at the second position, both the first driving part and the second driving part abut against the stagnant section.

[0016] In a possible design, the state switching member further includes a second limiting portion, the second limiting portion is connected to one end of the stagnant section close to the first driving member and the second driving member, and the second limiting portion protrudes outwardly in the radial direction of the driving head assembly; The second limiting portion can limit the first driving portion and the second driving portion from being separated from the state switching member.

[0017] In a possible design, the first driving member further includes a first rotating portion rotatably connected to the first driving portion; The second driving member further includes a second rotating portion rotatably connected to the second driving portion; When the state switching member switches between the first position and the second position under the action of an external force, both the first rotating part and the second rotating part are in rolling contact with the state switching member.

[0018] In a possible design, a first limiting protrusion is provided on a side of the first clamping portion facing the second clamping portion; A second limiting protrusion is provided on one side of the second clamping portion facing the first clamping portion; When the state switching member is located at the first position, the first limiting protrusion and the second limiting protrusion are arranged opposite to each other and abut against the side end of the first elastic member.

[0019] In a possible design, the first clamping portion is in a bent structure, so that a first avoidance portion is formed on a side of the first clamping portion facing away from the second clamping portion; The second clamping portion is in a bent structure, so that a second avoiding portion is formed on a side of the second clamping portion facing away from the first clamping portion.

[0020] In a second aspect, an embodiment of the present application provides a box, the box comprising: Box body; A drive head assembly is installed on the box body, and the drive head assembly is the drive head assembly described above.

[0021] In a third aspect, an embodiment of the present application provides an image forming device for installing the above-mentioned cartridge, the image forming device comprising: The device body is provided with a body drive head and a positioning member, the body drive head is provided with a matching groove, and the side wall of the matching groove is provided with a first clamping groove and a second clamping groove; The positioning member is used to push the state switching member in the drive head assembly of the box to move, so that the state switching member can move from the first position to the second position, and the first drive member and the second drive member move from the contracted state to the extended state, so that the first card slot and the second card slot can respectively engage with the first drive member and the second drive member.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the image forming device provided in this application; Figure 2 A schematic cross-sectional view of the drive coupling between the box and the device body; Figure 3It is a sectional view of a part of the structure of the main driving head of the device body; Figure 4 A cross-sectional schematic diagram of the drive head assembly provided in the present application in an initial state; Figure 5 A cross-sectional schematic diagram of the drive head assembly provided in the present application in a working state; Figure 6 A cross-sectional schematic diagram of the drive head assembly and the body drive head provided in the present application in an unmatched state; Figure 7 It is a cross-sectional schematic diagram of the driving head assembly provided by the present application and the main driving head in a mating state; Figure 8 for Figure 4 A magnified schematic diagram of the middle part; Fig. 9 A cross-sectional schematic diagram of the first driving member and the second driving member provided in the present application; Fig.10 A cross-sectional schematic diagram of the state switching member provided in this application; Reference numerals: 1´- driving force receiving unit; 11´- first driving head; 2´-Rotational force drive unit; 21´- second drive head; 1-Drive head assembly; 11- Mounting seat; 11a - Slide; 111- first limiting block; 112- second limiting block; 113-limiting column; 12-state switching component; 121- first limiting portion; 122-limiting section; 123-guide section; 124-stagnation segment; 125- second limiting portion; 126-fixed hook; 13- first driving member; 131- first driving unit; 132- first connection portion; 133-first clamping portion; 133a-first limiting protrusion; 133b-first bending section; 133c- second bending section; 133d-the third bending section; 133e-the fourth bending section; 134-first rotating part; 135-First avoidance section; 14- second driving member; 141- second driving unit; 142- second connection portion; 143- second clamping portion; 143a- second limiting protrusion; 143b-fifth bending section; 143c-sixth bending section; 143d-seventh bend section; 143e-Eighth bend; 144- second rotating part; 145-Second avoidance section; 15- first connecting shaft; 16- second connecting shaft; 17-first elastic member; 18- second elastic member; 2-box; 21- driving gear set; 22-coupling; 3- Image forming device; 31- Equipment body; 31a-body drive head; 311-matching groove; 311a-first card slot; 311b-second card slot; 32-Location piece.

[0024] 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 DESCRIPTION

[0025] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0028] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0030] This embodiment provides an image forming device, which is a multifunctional image forming device with functions such as printing, copying, scanning, and faxing.

[0031] Figure 1 1 is a schematic diagram of an image forming apparatus, and the image forming apparatus 3 includes an apparatus body 31 and a cartridge 2 , and the cartridge 2 is mounted in the apparatus body 31 .

[0032] Among them, the box 2 can be a printing consumable such as a developer box, a drum box and a powder box, which can be set according to actual conditions and is not limited in this embodiment.

[0033] Figure 2 The figure shows a connection diagram of a box and a device body in the prior art in one embodiment, the device body is provided with a rotational force driving unit 2´, the box is provided with a driving force receiving unit 1´, 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 to transmit the rotational driving force to the driving force receiving unit, and drive the driving force receiving unit in the box to rotate.

[0034] Specifically, the driving force receiving unit 1' is provided with a first driving head 11', and the rotational force driving unit 2' is provided with a second driving head 21', and the first driving head 11' and the second driving head 21' are matched. Among them, the first driving head 11' is a shaft structure, and the second driving head 21' is a slot structure. The driving coupling mode of the first driving head 11' and the second driving head 21' is shaft-slot matching (non-circular). According to the torque formula T=F S, in this matching mode, the diameter of the drive head is small and the required driving force is large, which makes the drive head easy to be damaged.

[0035] In this regard, this embodiment provides an image forming device to solve the above technical problems.

[0036] The image forming device includes a device body and a cartridge, and the cartridge is detachably mounted on the device body. The device body is provided with a positioning member, and when the cartridge is mounted on the device body, under the action of the positioning member, the driven end of the cartridge cooperates with the driving end of the device body, thereby realizing the driving coupling between the cartridge and the device body. When the cartridge is removed, as the cartridge is pulled out of the device body, the cartridge moves away from the positioning member, and the driven end of the cartridge can be released from the driving end of the device body, so that the cartridge can be taken out of the device body, which is convenient for users to replace and maintain the cartridge.

[0037] The matching structure between the box and the device body will be described in detail below with reference to the accompanying drawings.

[0038] Figure 3 The figure shows a cross-sectional schematic diagram of a partial structure of the device body 31. The device body 31 is provided with a positioning member 32, a body driving gear set (not shown in the figure) and a body driving head 31a. The positioning member 32 is located in the accommodating cavity of the mounting box 2 in the device body 31. The body driving gear set can drive the body driving head 31a to rotate under the drive of the driving device.

[0039] The main body driving head 31a is provided with a matching groove 311, and the matching inner side wall has at least a first clamping groove 311a and a second clamping groove 311b arranged opposite to each other. The first clamping groove 311a and the second clamping groove 311b are used for clamping and matching with the driven end of the box 2.

[0040] The box 2 includes a box body and a drive head assembly 1, the drive head assembly 1 is installed in the box body, and the drive head assembly 1 is used to cooperate with the main body drive head 31a. For details, please refer to Figure 4 and Figure 5 , Figure 4 and Figure 5 The schematic diagram of the structure of the drive head assembly 1 is shown. The drive head assembly 1 includes a mounting seat 11, a state switching member 12, a first driving member 13 and a second driving member 14. The first driving member 13 and the second driving member 14 are both mounted on the mounting seat 11 and can move relative to the mounting seat 11 to achieve the conversion between the contracted state and the extended state. The state switching member 12 is mounted on the mounting seat 11 and can move relative to the mounting seat 11 between a first position and a second position.

[0041] Among them, the state switching member 12 can be switched between the first position and the second position under the action of an external force, so that the first driving member 13 and the second driving member 14 can be switched between the contracted state and the extended state, thereby realizing the conversion of the drive head assembly 1 between the non-working state and the working state. When the state switching member 12 is in the first position, the first driving member 13 and the second driving member 14 are both retracted inward along the radial direction X of the drive head assembly 1, and the drive head assembly 1 is in a non-working state. When the state switching member 12 is in the second position, the first driving member 13 and the second driving member 14 are both extended outward along the radial direction X of the drive head assembly 1, and the drive head assembly 1 is in a working state capable of cooperating with the main body driving head 31a of the device body 31.

[0042] In this embodiment, during the process of installing the cartridge 2 in the device body 31, the drive head assembly 1 gradually changes from the contracted state to the extended state. When the drive head assembly 1 is fully extended, the drive head assembly 1 of the cartridge 2 is in a mating state with the body drive head 31a of the device body 31. At this time, the body drive head 31a can drive the drive head assembly 1 to work, thereby realizing the operation of the cartridge 2. Conversely, during the process of removing the cartridge 2 from the device body 31, when the drive head assembly 1 gradually returns to the non-working state, when the drive head assembly 1 of the cartridge 2 is disengaged from the body drive head 31a of the device body 31, the cartridge 2 can be removed from the device body 31.

[0043] When the drive head assembly 1 is in working state, the first drive member 13 and the second drive member 14 are in extended state, so that the first drive member 13 and the second drive member 14 are respectively matched with the first slot 311a and the second slot 311b, thereby ensuring the working stability of the drive head assembly 1.

[0044] When the drive head assembly 1 is not in operation, the first drive member 13 and the second drive member 14 are in a retracted state, so that the first drive member 13 and the second drive member 14 are released from the first slot 311a and the second slot 311b, respectively, to facilitate the installation and removal of the cartridge. Figure 6 The schematic diagram shows that the drive head assembly 1 and the main body drive head 31a of the device body 31 are in a non-matching state. Figure 7 The schematic diagram shows the driving head assembly 1 and the main driving head 31a of the device body 31 in a matching state. Figure 6 and Figure 7 When the cartridge 2 is not installed in the device body 31, the state switching member 12 is located in the first position, and the first driving member 13 and the second driving member 14 are both in the retracted state. By limiting the first driving member 13 and the second driving member 14 to the retracted state, the first driving member 13 and the second driving member 14 are prevented from interfering with the internal structure of the device body during the installation and removal of the cartridge 2, so as to facilitate the installation and removal of the cartridge.

[0045] During the process of installing the box 2 into the device body 31, the drive head assembly 1 moves toward the body drive head 31a, and the state switching member 12 can abut against the positioning member 32. The positioning member 32 pushes the state switching member 12 to move, so that the state switching member 12 moves from the first position to the second position. At the same time, the first driving member 13 and the second driving member 14 can be pushed to extend outward along the radial direction X of the drive head assembly 1. By arranging the positioning member 32 on the installation path of the box 2, when the box 2 is installed to a certain position, the positioning member 32 can trigger the state switching member 12 to move, so that the first driving member 13 and the second driving member 14 can start to extend outward at this time. In this embodiment, only the positioning member 32 needs to be arranged to trigger the drive head assembly 1 to start switching states. The structure is simple, the space occupied is small, and it is conducive to miniaturization of the image forming device 3.

[0046] When the box 2 is installed in place in the device body 31, the state switching member 12 is located in the second position, the first driving member 13 and the second driving member 14 move into the matching groove 311, and a part of the structure of the first driving member 13 extends to be inserted into the first card slot 311a, so that the first driving member 13 and the first card slot 311a are engaged and matched, and a part of the structure of the second driving member 14 extends to be inserted into the second card slot 311b, so that the second driving member 14 and the second card slot 311b are engaged and matched, thereby realizing the cooperation between the drive head assembly 1 and the main body drive head 31a, so that the main body drive head 31a can drive the drive head assembly 1 to rotate, and realize the operation of the box 2. By designing the first driving member 13 and the second driving member 14 to extend outward to cooperate with the first card slot 311a and the second card slot 311b, the driving force arm of the drive head assembly 1 is extended, which is conducive to reducing the driving force of the main body drive head 31a.

[0047] When the box 2 is removed from the device body 31, the state switching member 12 moves away from the positioning member 32 and moves from the second position to the first position. At the same time, the first driving member 13 and the second driving member 14 can be pushed to shrink inward along the radial direction X of the driving head assembly 1, so that the first driving member 13 is disengaged from the first card slot 311a to release the snap-fit ​​between the first driving member 13 and the first card slot 311a, and the second driving member 14 is disengaged from the second card slot 311b to release the snap-fit ​​between the second driving member 14 and the second card slot 311b, so that the driving head assembly 1 can be disengaged from the matching groove 311, thereby realizing the release of the matching between the driving head assembly 1 and the main driving head 31a, so as to take the box 2 out of the device body 31.

[0048] In this embodiment, by setting the linkage between the positioning member 32 and the state switching member 12 of the drive head assembly 1, the driving force arms of the first driving member 13 and the second driving member 14 of the drive head assembly 1 are extended, and the driving diameter of the drive head assembly 1 and the main body drive head 31a is increased, which is beneficial to reducing the driving force of the image forming device 3, and is beneficial to extending the life of the main body drive head 31a and the drive head assembly 1, and improving the working stability of the image forming device 3.

[0049] Please continue to refer to Figure 6 and Figure 7 The box 2 also includes a driving gear set 21 and a coupling 22. The coupling 22 connects the driving head assembly 1 and the driving gear set 21, so that the driving head assembly 1 can drive the driving gear set 21 to work.

[0050] Furthermore, the state switching member 12 is slidably mounted on the mounting seat 11, and the first driving member 13 and the second driving member 14 are both connected to the state switching member 12. When the state switching member 12 moves away from the first driving member 13 and the second driving member 14 under the action of the positioning member 32, the first driving member 13 and the second driving member 14 can be pushed to extend outward along the radial direction X of the driving head assembly 1. When the state switching member 12 approaches the first driving member 13 and the second driving member 14, the first driving member 13 and the second driving member 14 can be pushed to retract inward along the radial direction X of the driving head assembly 1. In this embodiment, when the state switching member 12 moves along the mounting seat 11, the first driving member 13 and the second driving member 14 can be pushed to switch between a contracted state and an extended state. By regulating the states of the first driving member 13 and the second driving member 14 through the state switching member 12, there is no need to set other driving mechanisms in the device body, and the structure is simple.

[0051] The mounting seat 11 is provided with a slide groove, and the state switching member 12 is provided with a protrusion (not shown in the figure), which is slidably matched with the slide groove to limit the movement path of the state switching member 12 on the mounting seat 11.

[0052] It should be noted that the connection modes of the first driving member 13 and the second driving member 14 with the state switching member 12 include but are not limited to abutment, hinge, etc.

[0053] For example, in some embodiments, please continue to refer to Figure 4 and Figure 5, the first driving member 13 and the second driving member 14 are relatively arranged on both sides of the state switching member 12 along the radial direction X of the driving head assembly 1, and both are in contact with the state switching member 12. That is, when the state switching member 12 is in the first state, the contact force applied by the state switching member 12 to the first driving member 13 and the second driving member 14 can limit the movement of the first driving member 13 and the second driving member 14. When the state switching member 12 moves from the first position to the second position under the action of the positioning member 32, the state switching member 12 moves away from the first driving member 13 and the second driving member 14, and reduces the contact force applied to the first driving member 13 and the second driving member 14, so that the first driving member 13 and the second driving member 14 can be pushed to extend outward along the radial direction X of the driving head assembly 1.

[0054] In this embodiment, the first driving member 13 and the second driving member 14 are both connected to the state switching member 12 in an abutting manner, so that the state switching member 12 can be matched with the first driving member 13 and the second driving member 14, which is convenient for assembly.

[0055] Alternatively, in some embodiments, the first driving member 13 and the second driving member 14 are both hinged on the state switching member 12, and driven by the state switching member 12, the first driving member 13 and the second driving member 14 are switched between the extended state and the contracted state.

[0056] Alternatively, in some embodiments, two state switching members 12 may be provided, and the two state switching members 12 and the corresponding driving members are provided as an integral structure, so that the driving members can switch between the extended state and the contracted state under the drive of the state switching members 12 .

[0057] Please continue to refer to Figure 4 and Figure 5 The drive head assembly 1 includes a first connecting shaft 15 and a second connecting shaft 16. The first drive member 13 is rotatably connected to the mounting seat 11 through the first connecting shaft 15, and the second drive member 14 is rotatably connected to the mounting seat 11 through the first connecting shaft 15, so that the first drive member 13 can rotate around the first connecting shaft 15 relative to the mounting seat 11, and the second drive member 14 can rotate around the second connecting shaft 16 relative to the mounting seat 11.

[0058] Please continue to refer to Figure 4 and Figure 5 The drive head assembly 1 further includes a first elastic member 17, one end of the first elastic member 17 is connected to the first drive member 13, and the other end is connected to the second drive member 14. When the state switching member 12 moves away from the first drive member 13 and the second drive member 14 under the action of an external force, under the action of the first elastic member 17, the first drive member 13 and the second drive member 14 can rotate relative to the mounting seat 11 and extend outward along the radial direction X of the drive head assembly 1.

[0059] That is to say, when the first driving member 13 and the second driving member 14 are in the contracted state, the first driving member 13 and the second driving member 14 compress the first elastic member 17, and the first elastic member 17 is in the compressed state and stores elastic potential energy. When the state switching member 12 is away from the first driving member 13 and the second driving member 14, the abutment force applied to the first driving member 13 and the second driving member 14 is reduced, and at the same time, the first driving member 13 and the second driving member 14 reduce the pressure on the first elastic member 17. At this time, the first elastic member 17 begins to release elastic potential energy, so that the elastic force released by the first elastic member 17 can push the first driving member 13 to rotate around the first connecting shaft 15 and extend outward along the radial direction X of the driving head, and push the second driving member 14 to rotate around the second connecting shaft 16 and extend outward along the radial direction X of the driving head, so as to achieve the first driving member 13 and the first slot 311a match, and the second driving member 14 and the second slot 311b match.

[0060] The first elastic member 17 may be a spring.

[0061] In this embodiment, the first elastic member 17 is provided to enable the first driving member 13 and the second driving member 14 to extend outward along the radial direction X of the driving head assembly 1, without providing other driving mechanisms, thus simplifying the structure and saving costs.

[0062] Furthermore, if Figure 8 Shown Figure 4 In the enlarged schematic diagram of the A part, the mounting seat 11 is provided with a first limit block 111 and a second limit block 112, and along the axial direction Y of the drive head assembly 1, the first limit block 111 and the second limit block 112 are arranged on both sides of the first elastic member 17. The first limit block 111 and the second limit block 112 can limit the expansion and contraction of the first elastic member 17, and prevent the first elastic member 17 from bending during the expansion and contraction process, so as to extend the service life of the first elastic member 17 and ensure the reliability of the operation of the drive head assembly 1.

[0063] Please continue to refer to Figure 4 , Figure 5 and Figure 8 The drive head assembly 1 further includes a second elastic member 18, the mounting seat 11 is provided with a limiting column 113, one end of the second elastic member 18 is connected to the limiting column 113, and the other end is connected to the state switching member 12. The elastic force of the second elastic member 18 is greater than the elastic force of the first elastic member 17.

[0064] Under the action of the second elastic member 18, the second elastic member 18 can pull the state switching member 12 to remain in the first position to limit the movement of the first drive member 13 and the second drive member 14. When the state switching member 12 moves away from the first drive member 13 and the second drive member 14 under the action of the positioning member 32, the state switching member 12 applies a pulling force to the second elastic member 18, and the second elastic member 18 stores elastic potential energy. When the state switching member 12 moves away from the positioning member 32, the second elastic member 18 releases the elastic potential energy, and the second elastic member 18 pulls the state switching member 12 to move from the second position to the first position, and increases the abutment force applied to the first drive member 13 and the second drive member 14. Since the elastic force of the second elastic member 18 is greater than the elastic force of the first elastic member 17, the first drive member 13 and the second drive member 14 can be pushed to retract inward along the radial direction X of the drive head assembly 1.

[0065] In this embodiment, the state switching member 12 is reset by providing the second elastic member 18, and no other driving mechanism is required, which has a simple structure and saves costs.

[0066] Further, the state switching member 12 is provided with a fixing hook 126, and the second elastic member 18 is connected to the state switching member 12 via the fixing hook 126. The second elastic member 18 may be a spring.

[0067] like Fig. 9 The first driving member 13 and the second driving member 14 are shown in FIG. Figure 4 , Figure 5 and Fig. 9 The first driving member 13 includes a first driving portion 131, a first connecting portion 132 and a first clamping portion 133. The first driving portion 131 and the first clamping portion 133 are connected to both ends of the first connecting portion 132. The first connecting portion 132 is rotatably connected to the mounting seat 11 through the first connecting shaft 15. The first clamping portion 133 is used to cooperate with the first clamping groove 311a. The first driving portion 131 is used to cooperate with the state switching member 12.

[0068] The first driving part 131, the first connecting part 132 and the first clamping part 133 may be an integrally formed structure. Alternatively, the first driving part 131, the first connecting part 132 and the first clamping part 133 may be separately formed and then fixedly connected. The specific setting may be based on actual conditions and is not limited in this embodiment.

[0069] The second driving member 14 includes a second driving portion 141, a second connecting portion 142, and a second clamping portion 143. The second driving portion 141 and the second clamping portion 143 are connected to both ends of the second connecting portion 142. The second connecting portion 142 is rotatably connected to the mounting seat 11 through the second connecting shaft 16. The second clamping portion 143 is used to cooperate with the second clamping groove 311b, and the second driving portion 141 is used to cooperate with the state switching member 12.

[0070] The second driving part 141, the second connecting part 142 and the second clamping part 143 may be an integrally formed structure. Alternatively, the second driving part 141, the second connecting part 142 and the second clamping part 143 may be separately formed and then fixedly connected. The specific setting may be based on actual conditions and is not limited in this embodiment.

[0071] When the state switching member 12 moves away from the first driving member 13 and the second driving member 14 under the action of the positioning member 32, the first clamping portion 133 and the second clamping portion 143 are pushed away from each other along the radial direction X of the driving head assembly 1 by the first elastic member 17, so that the first clamping portion 133 can extend outward along the radial direction X of the driving head assembly 1 to cooperate with the first clamping groove 311a, and the second clamping portion 143 can extend outward along the radial direction X of the driving head assembly 1 to cooperate with the second clamping groove 311b, and at the same time drive the first driving portion 131 and the second driving portion 141 to approach each other along the radial direction X of the driving head assembly 1.

[0072] Furthermore, the first driving part 131 and the second driving part 141 always maintain contact with the state switching member 12, so that when the state switching member 12 approaches the first driving member 13 and the second driving member 14, the state switching member 12 can push the first driving part 131 and the second driving part 141 away from each other along the radial direction X of the driving head assembly 1, and drive the first clamping part 133 and the second clamping part 143 to approach each other along the radial direction X of the driving head assembly 1, so as to realize that the first clamping part 133 is disengaged from the first clamping groove 311a, and the second clamping part 143 is disengaged from the second clamping groove 311b.

[0073] In this embodiment, the first connecting portion 132 is rotatably connected to the first connecting shaft 15, so that the first clamping portion 133 and the first driving portion 131 can rotate in the opposite direction around the first connecting portion 132, and the first clamping portion 133 and the first driving portion 131 are in different states (compressed or extended), so that the state switching member 12 can switch the state of the first clamping portion 133 through the first driving portion 131. The second connecting portion 142 is rotatably connected to the second connecting shaft 16, so that the second clamping portion 143 and the second driving portion 141 can rotate in the opposite direction around the second connecting portion 142, and the second clamping portion 143 and the second driving portion 141 are in different states (compressed or extended), so that the state switching member 12 can switch the state of the second clamping portion 143 through the second driving portion 141.

[0074] Please refer to Figure 6 , Figure 7 and Fig. 9, a first limiting protrusion 133a is provided on one side of the first clamping portion 133 facing the second clamping portion 143, and a second limiting protrusion 143a is provided on one side of the second clamping portion 143 facing the first clamping portion 133. When the state switching member 12 is in the first position, the first limiting protrusion 133a and the second limiting protrusion 143a are arranged opposite to each other, and both abut against the side end of the first elastic member 17. In this embodiment, the first limiting protrusion 133a and the second limiting protrusion 143a can limit the expansion and contraction of the first elastic member 17, thereby reducing the risk of bending of the first elastic member 17.

[0075] As the drive head assembly 1 moves toward the main drive head 31a, the first drive member 13 and the second drive member 14 extend outward along the radial direction X of the drive head assembly 1. In order to prevent the movement of the first drive member 13 and the second drive member 14 from interfering with the main drive head 31a, the first drive member 13 and the second drive member 14 are both provided with avoidance portions.

[0076] Specifically, the first clamping portion 133 includes a first bending section 133b, a second bending section 133c, a third bending section 133d and a fourth bending section 133e that are bent in sequence, so that the first clamping portion 133 is in a bent structure, so that the first side of the first clamping portion 133 facing away from the second clamping portion 143 forms a first avoidance portion 135. The first avoidance portion 135 can avoid the first driving member 13 in the process of switching between the extended state and the contracted state, thereby preventing the first driving member 13 from colliding with the main body driving head 31a.

[0077] The second clamping portion 143 includes a fifth bending section 143b, a sixth bending section 143c, a seventh bending section 143d and an eighth bending section 143e that are bent in sequence, so that the second clamping portion 143 is in a bent structure, so that a second avoidance portion 145 is formed on the side of the second clamping portion 143 facing away from the first clamping portion 133. The second avoidance portion 145 can avoid the second driving member 14 in the process of switching between the extended state and the contracted state, thereby preventing the second driving member 14 from colliding with the main body driving head 31a.

[0078] like Fig.10 The schematic diagram of the state switching member 12 is shown, and the state switching member 12 is provided with a first limit portion 121, a limit section 122, a guide section 123, a stagnation section 124, and a second limit portion 125 connected to each other. The first limit portion 121, the limit section 122, the guide section 123, the stagnation section 124, and the second limit portion 125 can be an integrally formed structure. Alternatively, the first limit portion 121, the limit section 122, the guide section 123, the stagnation section 124, and the second limit portion 125 can also be formed separately and then fixedly connected.

[0079] Please refer to Figure 4 , Figure 5 , Fig. 9 and Fig.10 , the cross-sectional area of ​​the guide section 123 gradually decreases along the direction approaching the first drive member 13 and the second drive member 14. That is, when the state switching member 12 moves away from the first drive member 13 and the second drive member 14, the first drive portion 131 and the second drive portion 141 move along the guide section 123, specifically, the first drive portion 131 and the second drive portion 141 move along the direction from the larger cross-sectional area of ​​the guide section 123 to the smaller cross-sectional area of ​​the guide section 123, so that the first drive portion 131 and the second drive portion 141 approach each other along the radial direction X of the drive head assembly 1, so that the first clamping portion 133 and the second clamping portion 143 move away from each other along the radial direction X of the drive head assembly 1, so that the first drive member 13 and the second drive member 14 are switched from the contracted state to the expanded state.

[0080] When the state switching member 12 approaches the first driving member 13 and the second driving member 14, the first driving part 131 and the second driving part 141 move along the guide section 123, specifically, the first driving part 131 and the second driving part 141 move along the direction of the smaller cross-sectional area of ​​the guide section 123 toward the larger cross-sectional area of ​​the guide section 123, and the guide section 123 can push the first driving part 131 and the second driving part 141 away from each other along the radial direction X of the driving head assembly 1, so that the first clamping part 133 and the second clamping part 143 approach each other along the radial direction X of the driving head assembly 1, so that the first driving member 13 and the second driving member 14 are switched from the extended state to the contracted state.

[0081] In this embodiment, the guide section 123 is a frustum structure, and the end of the guide section 123 close to the first driving member 13 and the second driving member 14 is a small end surface, and the end of the guide section 123 away from the first driving member 13 and the second driving member 14 is a large end surface.

[0082] The guide section 123 can buffer the extension process of the first driving member 13 and the second driving member 14, thereby preventing the first driving member 13 and the second driving member 14 from being deployed too fast and failing to engage with the first slot 311a and the second slot 311b.

[0083] The guide section 123 can push the first driving member 13 and the second driving member 14 to retract inwardly along the radial direction X of the driving head assembly 1 , so that the first driving member 13 and the second driving member 14 can be released from the first slot 311 a and the second slot 311 b .

[0084] The limiting section 122 is connected to one end of the guide section 123 away from the first driving member 13 and the second driving member 14, and the limiting section 122 is in the shape of a straight rod. When the state switching member 12 is in the first position, the first driving part 131 and the second driving part 141 are both in contact with the limiting section 122 to limit the movement of the first driving part 131 and the second driving part 141 relative to the state switching member 12, thereby limiting the first driving member 13 and the second driving member 14 from extending outward, so that the drive head assembly 1 remains in a non-working state.

[0085] The first limiting portion 121 is connected to one end of the limiting section 122 away from the first driving member 13 and the second driving member 14, and the first limiting portion 121 protrudes outward along the radial direction X of the driving head assembly 1, and the first limiting portion 121 can limit the first driving member 131 and the second driving member 141 from being separated from the state switching member 12. That is, the first limiting portion 121 can prevent the first driving member 13 and the second driving member 14 from continuing to move, and prevent the first driving member 13 and the second driving member 14 from being separated from the state switching member 12, so as to ensure the working stability of the driving head assembly 1.

[0086] The state switching member 12 is further provided with a stagnation section 124, which is connected to one side of the guide section 123 close to the first driving member 13 and the second driving member 14, and is in the shape of a straight rod. When the state switching member 12 is in the second position, the first driving part 131 and the second driving part 141 are both in contact with the stagnation section 124, so that the drive head assembly 1 remains in the working state.

[0087] The second limiting portion 125 is connected to one end of the stagnant section 124 close to the first driving member 13 and the second driving member 14, and the second limiting portion 125 protrudes outward along the radial direction X of the driving head assembly 1, and the second limiting portion 125 can limit the first driving member 131 and the second driving member 141 from being separated from the state switching member 12. That is, the second limiting portion 125 can block the first driving member 13 and the second driving member 14 from continuing to move, and block the first driving member 13 and the second driving member 14 from being separated from the state switching member 12, so as to ensure the working stability of the driving head assembly 1.

[0088] In some embodiments, the first driving member 13 further includes a first rotating portion 134 rotatably connected to the first driving portion 131, and the second driving member 14 further includes a second rotating portion 144 rotatably connected to the second driving portion 141. When the state switching member 12 switches between the first position and the second position under the action of an external force, both the first rotating portion 134 and the second rotating portion 144 are in rolling contact with the state switching member 12 to reduce the friction generated when the first driving member 13 and the second driving member 14 move along the state switching member 12.

[0089] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drive head assembly, for being arranged on a cartridge, wherein the cartridge is detachably mounted on an image forming device, characterized in that: The drive head assembly comprises: Mounting seat; A first driving member and a second driving member, wherein the first driving member and the second driving member are both mounted on the mounting seat and are capable of moving relative to the mounting seat; a state switching member, the state switching member being mounted on the mounting seat and being capable of moving between a first position and a second position relative to the mounting seat; The state switching member can be switched between a first position and a second position under the action of an external force, so that the first driving member and the second driving member can be switched between a contracted state and an extended state; When the state switching member is located at the first position, the first driving member and the second driving member are both retracted inwardly along the radial direction of the driving head assembly; When the state switching member is located at the second position, the first driving member and the second driving member both extend outwardly in the radial direction of the driving head assembly.

2. The drive head assembly according to claim 1, characterized in that: The state switching member is slidably mounted on the mounting seat; The first driving member and the second driving member are both connected to the state switching member; When the state switching member moves from the first position to the second position under the action of external force, the state switching member drives the first driving member and the second driving member to extend radially outward along the drive head assembly, or enables both the first driving member and the second driving member to be pushed to extend radially outward along the drive head assembly.

3. The drive head assembly according to claim 1 or 2, characterized in that: The first driving member includes a first connecting portion, and the first connecting portion is rotatably connected to the mounting seat through a first connecting shaft; The second driving member includes a second connecting portion, and the second connecting portion is rotatably connected to the mounting seat through a second connecting shaft.

4. The drive head assembly according to claim 3, characterized in that: The drive head assembly also includes a first elastic member; When the state switching member moves from the first position to the second position under the action of external force, under the action of the first elastic member, the first driving member and the second driving member can rotate relative to the mounting seat and extend radially outward along the drive head assembly.

5. The drive head assembly according to claim 4, characterized in that: The first driving member is provided with a first driving portion and a first clamping portion, and the first driving portion and the first clamping portion are connected to two ends of the first connecting portion; The second driving member is provided with a second driving portion and a second clamping portion, and the second driving portion and the second clamping portion are connected to two ends of the second connecting portion; When the state switching member moves from the first position to the second position under the action of external force, the first clamping portion and the second clamping portion move away from each other in the radial direction of the drive head assembly, and drive the first driving portion and the second driving portion to approach each other in the radial direction of the drive head assembly, and the first driving portion and the second driving portion both maintain contact with the state switching member.

6. The drive head assembly according to claim 5, characterized in that: The state switching member is provided with a guide section, and the cross-sectional area of ​​the guide section gradually decreases along the direction approaching the first driving member and the second driving member; When the state switching member moves from the first position to the second position under the action of an external force, the state switching member moves away from the first driving member and the second driving member, and the first driving part and the second driving part move along the guide section.

7. The drive head assembly according to claim 6, characterized in that: The drive head assembly also includes a second elastic member; The mounting seat is provided with a limiting column, one end of the second elastic member is connected to the limiting column, and the other end is connected to the state switching member; Under the action of the second elastic member, the state switching member can move from the second position to the first position, and the guide section can push the first driving part and the second driving part away from each other in the radial direction of the driving head assembly, so as to drive the first clamping part and the second clamping part to approach each other in the radial direction of the driving head assembly, so that the first driving member and the second driving member can switch from an extended state to a contracted state.

8. The drive head assembly according to claim 6, characterized in that: The state switching member is further provided with a limiting segment, and the limiting segment is connected to an end of the guide segment away from the first driving member and the second driving member; When the state switching member is located at the first position, the first driving part and the second driving part are both in contact with the limiting section, and the limiting section can limit the first driving member and the second driving member from extending outward.

9. The drive head assembly according to claim 8, characterized in that: The state switching member further comprises a first limiting portion, the first limiting portion is connected to an end of the limiting section away from the first driving member and the second driving member, and the first limiting portion protrudes outwardly in the radial direction of the driving head assembly; The first limiting portion can limit the first driving portion and the second driving portion from being separated from the state switching member.

10. The drive head assembly according to claim 6, characterized in that: The state switching member is further provided with a stagnant section, and the stagnant section is connected to a side of the guide section close to the first driving member and the second driving member; When the state switching member is located at the second position, both the first driving part and the second driving part abut against the stagnant section.

11. The drive head assembly according to claim 10, characterized in that: The state switching member further includes a second limiting portion, the second limiting portion is connected to one end of the stagnant section close to the first driving member and the second driving member, and the second limiting portion protrudes outwardly in the radial direction of the driving head assembly; The second limiting portion can limit the first driving portion and the second driving portion from being separated from the state switching member.

12. The drive head assembly according to claim 5, characterized in that The first driving member further includes a first rotating portion rotatably connected to the first driving portion; The second driving member further includes a second rotating portion rotatably connected to the second driving portion; When the state switching member switches between the first position and the second position under the action of an external force, both the first rotating part and the second rotating part are in rolling contact with the state switching member.

13. The drive head assembly according to claim 5, characterized in that A first limiting protrusion is provided on one side of the first clamping portion facing the second clamping portion; A second limiting protrusion is provided on one side of the second clamping portion facing the first clamping portion; When the state switching member is located at the first position, the first limiting protrusion and the second limiting protrusion are arranged opposite to each other and abut against the side end of the first elastic member.

14. The drive head assembly according to claim 5, characterized in that The first clamping portion is in a bent structure, so that a first avoiding portion is formed on a side of the first clamping portion facing away from the second clamping portion; The second clamping portion is in a bent structure, so that a second avoiding portion is formed on a side of the second clamping portion facing away from the first clamping portion.

15. A box, characterized in that The box includes: Box body; A drive head assembly, wherein the drive head assembly is mounted on the box body, and the drive head assembly is the drive head assembly according to any one of claims 1 to 14.

16. An image forming apparatus for mounting the cartridge according to claim 15, characterized in that: The image forming device comprises: The device body is provided with a body driving head and a positioning member, the body driving head is provided with a matching groove, and the side wall of the matching groove is provided with a first clamping groove and a second clamping groove; The positioning member is used to push the state switching member in the drive head assembly of the box to move, so that the state switching member can move from the first position to the second position, and the first drive member and the second drive member move from the contracted state to the extended state, so that the first card slot and the second card slot can respectively engage with the first drive member and the second drive member.

Images