Developing box

Abstract

A developing cartridge includes: a cartridge body having a first end and a second end in a first direction and having a third end and a fourth end in a second direction, the first direction being perpendicular to the second direction; the developing roller is rotatably arranged on the box body along a first direction; the powder feeding roller is rotatably arranged on the box body in the first direction; the stirring frame is rotatably arranged on the box body in the first direction; the transmission assembly is arranged at the first end of the box body and comprises a driving part which is provided with a power receiving part, and the power receiving part is used for receiving driving force from the image forming device; the driving gear is in transmission connection with the power receiving part so as to receive the driving force; the developing rotating part and the developing roller are coaxially and fixedly arranged, and the developing rotating part is used for directly or indirectly acquiring the driving force from the driving gear and transmitting the driving force to the developing roller; and the powder feeding gear and the powder feeding roller are coaxially and fixedly arranged, and the powder feeding gear is used for directly or indirectly obtaining the driving force from the driving gear and transmitting the driving force to the powder feeding roller.

Description

Technical Field

[0001] The utility model relates to the technical field of image formation, in particular to a developing box. Background Art

[0002] The developing box is a detachable part widely used in image forming devices. After the printing consumables of the image forming device are consumed, a new developing box needs to be replaced. The developing box is provided with a transmission assembly and a developing assembly. The transmission assembly is used to receive the driving force output by the image forming device and enable the developing roller, the powder feeding roller and the stirring frame in the developing box to work in the developing box. At present, the setting of the transmission assembly is unreasonable and the transmission effect is poor. Utility Model Content

[0003] According to one aspect of the utility model, there is provided a developing cartridge, which is detachably mounted in an image forming device together with a drum assembly having a photosensitive drum, comprising:

[0004] The box body has a first end and a second end in a first direction, and a third end and a fourth end in a second direction, and the first direction and the second direction are perpendicular;

[0005] A developing roller rotatably disposed on the box body along a first direction;

[0006] A powder feeding roller, which is rotatably arranged on the box body along a first direction;

[0007] A stirring frame, which is rotatably arranged on the box body along a first direction;

[0008] an identification component, which is disposed at the first end of the box body and includes a storage medium, wherein the storage medium has an electrical contact surface, and the storage medium can be electrically connected to the image forming device through the electrical contact surface; and

[0009] A transmission assembly is arranged at the first end of the box body and comprises:

[0010] a driving unit, which is provided with a power receiving unit, the power receiving unit is used to receive a driving force from the image forming device;

[0011] A driving gear, which is transmission-connected with the power receiving part to receive the driving force;

[0012] A developing rotating member, which is coaxially fixedly arranged with the developing roller and is used to directly or indirectly obtain the driving force from the driving gear and transmit it to the developing roller; and

[0013] The powder feeding gear is coaxially fixedly arranged with the powder feeding roller, and is used for directly or indirectly obtaining the driving force from the driving gear and transmitting it to the powder feeding roller.

[0014] The transmission component of the utility model is reasonably arranged, has a good transmission effect, and can improve the working stability of the image forming device.

[0015] In some embodiments, the transmission assembly also includes a first transmission connecting member, both ends of which are rotatably connected to the driving unit and the driving gear respectively, and the driving unit can transmit the driving force to the driving gear through the first transmission connecting member. In the second direction, the distance between the rotation axes of the two ends of the first transmission connecting member is equal to the distance between the rotation axes of the driving unit and the driving gear, and the rotation axis of the first transmission connecting member does not coincide with the rotation axis of the driving unit, so that the driving unit and the driving gear rotate synchronously.

[0016] In some embodiments, the driving gear is fixedly connected to the stirring frame, the rotation axis of the stirring frame is coaxial with the rotation axis of the driving gear and does not coincide with the rotation axis of the driving unit, and the driving unit can drive the stirring frame through the first transmission connection member, so that the stirring frame can rotate in the same direction as the driving unit.

[0017] In some embodiments, the first transmission connection member is a universal head, and the driving part and the driving gear are connected through the universal head. The universal head includes a first connecting end and a second connecting end. A fifth connecting part is provided on the driving part, and the first connecting end and the fifth connecting part are rotatably connected. A sixth connecting part is provided on the driving gear, and the second connecting end and the sixth connecting part are rotatably connected, so that the universal head can rotate relative to the driving part and the driving gear.

[0018] In some embodiments, the transmission assembly further includes a first idler wheel and a second idler wheel, and the developing rotating member receives the driving force transmitted by the driving gear through the first idler wheel and the second idler wheel.

[0019] In some embodiments, the first idler wheel is meshed with the developing rotatable member and the powder feeding gear at the same time, and the second idler wheel is meshed with the first idler wheel and the driving gear at the same time. In the second direction, the driving gear drives the developing rotatable member and the powder feeding gear through the first idler wheel and the second idler wheel.

[0020] In some embodiments, the second idler wheel is coaxially arranged with the powder feeding gear, and is rotatably supported by the powder feeding gear, and the second idler wheel and the powder feeding gear can rotate relative to each other without power transmission, and the second idler wheel and the powder feeding gear are both meshed with the driving gear, and the first idler wheel is meshed with the developing rotating member and the second idler wheel at the same time to transmit the driving force to the developing rotating member.

[0021] In some embodiments, the transmission assembly further includes a second transmission connection member, and the developing rotating member indirectly receives the driving force transmitted by the driving gear through the second transmission connection member, and the second transmission connection member is a belt or a connecting rod.

[0022] In some embodiments, the developing rotatable member is connected to the powder feeding gear through a second transmission connecting member, a first mounting groove is provided on the developing rotatable member, a second mounting groove is provided on the powder feeding gear, a belt is connected to the developing rotatable member and the powder feeding gear through the first mounting groove and the second mounting groove, the powder feeding gear is meshed with the driving gear, the powder feeding gear receives the driving force of the driving gear and drives the developing rotatable member to rotate synchronously through the belt; or

[0023] A first connecting column is provided on the developing rotating member, and a second connecting column is provided on the powder feeding gear. The connecting rod connects the powder feeding gear to the developing rotating member through the first connecting column and the second connecting column. The powder feeding gear receives the driving force of the driving gear and drives the developing rotating member to rotate synchronously through the connecting rod.

[0024] In some embodiments, the transmission assembly further includes a first idler wheel, the developing rotatable member is connected to the first idler wheel via a second transmission connecting member, the first idler wheel is meshed with the driving gear to receive the driving force transmitted by the driving gear and then drives the developing rotatable member to rotate via the second transmission connecting member.

[0025] In some embodiments, the box body further includes a first support column and a second support column, the rotation axis of the stirring frame coincides with the rotation axis of the driving part, and the driving part is fixedly connected to the stirring frame to drive the stirring frame to rotate.

[0026] In some embodiments, a transmission hole is provided at one end of the driving part facing the box body, and the stirring frame has a transmission part matching the transmission hole at one end in the first direction. The stirring frame can be coaxially fixedly connected to the driving part through the cooperation between the transmission hole and the transmission part.

[0027] In some embodiments, the stirring frame includes a first stirring blade, a second stirring blade and a third stirring blade, the first stirring blade and the second stirring blade have a first interval in the first direction, the second stirring blade and the third stirring blade have a second interval in the first direction, the length of the first interval and the second interval in the first direction is greater than the length of the first support column and the second support column in the first direction, so that the first interval and the second interval can avoid the first support column and the second support column.

[0028] In some embodiments, the developing box also includes a detected component, which is arranged at the second end of the box body, and includes a detection gear, which can rotate around an axis extending along the first direction, and the detection gear is a toothless gear with a detection protrusion thereon. When the detection gear rotates, it drives the detection protrusion to rotate, and then cooperates with the image forming device, so that the image forming device identifies the developing box.

[0029] In some embodiments, the developing box also includes a first pushing portion and a first separating portion, the first pushing portion is used to receive the pushing force applied by the drum assembly along the second direction so that the developing roller contacts the photosensitive drum, the first separating portion is used to receive the separating force applied by the image forming device so that the developing roller is separated from the photosensitive drum, and the first separating portion is closer to the developing roller than the first pushing portion in the second direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a developing cartridge in Embodiment 1;

[0031] Figure 2 is a schematic structural diagram of the first end of the developing cartridge in the first embodiment;

[0032] Figure 3 is a schematic structural diagram of the second end of the developing box in the first embodiment;

[0033] Figure 4 is a schematic structural diagram of the bearing bracket in the first embodiment;

[0034] Figure 5 is a schematic diagram of the structure after the first end hides the first protective cover in the first embodiment;

[0035] Figure 6 is a structural schematic diagram of the movement of the transmission assembly in the first embodiment;

[0036] Figure 7 is an exploded view of the first transmission connecting member 50 in the first embodiment;

[0037] Figure 8 is a schematic diagram of the structure in which the first end of the developing box hides the first protective cover in the second embodiment;

[0038] Fig. 9 Another perspective of the first end of the developing box hiding the first protective cover in the second embodiment;

[0039] Figure 9a is a schematic diagram of a modified implementation method in Example 2;

[0040] Fig.10 is a schematic diagram of the structure of the transmission assembly in the third embodiment;

[0041] Fig.11 is an exploded view of the transmission assembly in the third embodiment;

[0042] Fig.12 is an exploded view of the developing cartridge in the fourth embodiment;

[0043] Fig.13 is a three-dimensional structural schematic diagram of a part of the structure of the transmission assembly in the fourth embodiment;

[0044] Fig.14is a schematic diagram of the structure of the first end after the first protective cover and the bearing bracket are hidden in the fifth embodiment;

[0045] Fig.15 is an exploded view of the first end in Embodiment 5;

[0046] Fig.16 is an exploded view of the driving part, the connecting member and the gear in the fifth embodiment;

[0047] Fig.17 is a schematic diagram of the structure of the first end after the first protective cover is hidden in the sixth embodiment;

[0048] Fig.18 is an exploded view of the first end in Example 6;

[0049] Fig.19 is a schematic diagram of the structure of the first end after the first protective cover is hidden in the seventh embodiment;

[0050] Fig. 20 is a schematic diagram of the structure of the first end after the first protective cover is hidden in the eighth embodiment;

[0051] Fig.21 is an exploded view of the first end in Embodiment 8;

[0052] Fig. 22 is a schematic diagram of the structure of the first end after the first protective cover is hidden in the ninth embodiment;

[0053] Fig.23 is an exploded view of the developing cartridge in Embodiment 9;

[0054] Fig.24 is a schematic diagram showing the three-dimensional structure of the developer box exploded structure of the accommodating chamber in the tenth embodiment;

[0055] Fig.25 is a schematic diagram of the structure of the transmission assembly at the first end of the box body after the first protective cover and the identification assembly are hidden in the tenth embodiment;

[0056] Fig.26 is a schematic diagram of the exploded structure of the stirring frame and the driving part in the tenth embodiment;

[0057] Fig. 27 It is a structural schematic diagram of the second end of the box body in the tenth embodiment. DETAILED DESCRIPTION

[0058] The utility model is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0059] It should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0063] In this specification, one component driving another component can be directly driven or indirectly driven. Direct drive refers to the direct transmission between two components, such as the meshing between two gears, and indirect drive refers to the transmission between two components through one or more intermediate transmission components.

[0064] In this specification, the axial direction of the box body (left-right direction) is the first direction, the direction in which the developing box is installed on the drum assembly (front-back direction) is the second direction, and the thickness direction of the box body (up-down direction) is the third direction.

[0065] Embodiment 1:

[0066] like Figure 1 - Figure 7 As shown, this embodiment provides a developing box 1, which is detachably mounted on a drum assembly to form a processing box, and then the processing box is detachably mounted in an image forming device. The developing box 1 includes a box body 10, a developing assembly, a transmission assembly, a first protective cover 111 and an identification assembly.

[0067] like Figure 1 As shown, the box body 10 has a receiving cavity for receiving the developer, the box body 1 has a first end 11 and a second end 12 arranged oppositely in the first direction, the box body 1 has a third end 13 and a fourth end 14 arranged oppositely in the second direction, and the box body 10 has a fifth end 15 and a sixth end arranged oppositely in the third direction. The fifth end 15 is provided with a friction portion 151, and the friction portion 151 is provided with a plurality of ribs extending along the first direction, and the friction portion 151 makes it easy for the user to pick up the developing box 1. The transmission assembly is located at the first end 11 of the box body 1, and is used to receive the power output by the image forming device so that the developing assembly in the developing box is driven. The first protective cover 111 is detachably fixedly mounted on the first end 11 of the box body 1, and the first protective cover 111 at least covers a part of the transmission assembly, and the first protective cover 111 is used to protect the transmission assembly.

[0068] like Figure 1 As shown, the developing assembly includes a developing roller 131, a stirring frame (not shown in the figure of this embodiment) and a powder feeding roller (not shown in the figure of this embodiment), and the developing roller 131, the stirring frame and the powder feeding roller can be rotatably installed in the accommodating chamber between the first end 11 and the second end 12. The rotation axes of the developing roller 131, the stirring frame and the powder feeding roller all extend along the first direction. The powder feeding roller is arranged adjacent to the developing roller 131, and in the second direction, the developing roller 131 is closer to the third end 13 of the box body 1 than the powder feeding roller. The stirring frame is used to stir the developer in the developing chamber so that the developer can be better transferred to the developing roller 131 through the powder feeding roller and prevent the developer from agglomerating. The developing roller 131 is used to contact the photosensitive drum of the drum assembly to transfer the developer to the photosensitive drum.

[0069] like Figure 1 and Figure 2As shown, the developing box 1 includes an identification component, which is located at the first end 11 of the box body 10. In this embodiment, the identification component includes a storage medium 113, a first bracket 114 and a second bracket 115. In other embodiments, the identification component may only be provided with a storage medium 33. The first bracket 114 is detachably mounted on the first end 11, and the first bracket 114 can move relative to the box body 10. The storage medium 113 is detachably mounted on the first bracket 114 and can move relative to the box body 10 with the first bracket 114. The storage medium 113 is used to store information of the developing box 1. The storage medium 113 is provided with an electrical contact surface (not marked in this embodiment). When the developing box 1 is installed in the image forming device, the electrical contact surface can be electrically connected to the image forming device and then transmit information to the image forming device, so that the developing box 1 is recognized by the image forming device. The second bracket 115 is detachably mounted on the first end 11, and the second bracket 115 is used to prevent the first bracket 114 from falling off.

[0070] like Figure 1 and Figure 2 As shown, the first end of the developing box 1 also includes an assembly 112. In this embodiment, the assembly 112 is detachably mounted on the first protective cover 111. In some embodiments, the assembly 112 can be integrally formed with the first protective cover 111. The assembly includes a first guide portion 1121, a first separation portion 1122 and a first forced pushing portion 1123, which are integrally formed or combined. The first guide portion 1121 is an arc-shaped portion facing the third end 13. The first guide portion is used to guide the developing box 1 when the developing box 1 is installed on the drum assembly of the image forming device, so that the developing box 1 is installed smoothly. The first separation member 1122 protrudes in the first direction toward the direction away from the first end 11. The first separation member 1122 is used to receive the separation force output by the image forming device, so that the developing roller 131 and the photosensitive drum on the drum assembly are out of contact. The first forced pushing portion 1123 is located below the first separation portion 1122 in the third direction. The first forced pushing portion is used to receive the forced pushing force applied by the drum assembly, so that the developing roller 131 and the photosensitive drum are in close contact.

[0071] like Figure 1 and Figure 3As shown, the second end 12 of the box body 10 is provided with a second protective cover 121, a second separation member 122, a second guide member 123 and a second forced push member 124. The second separation member 122 is used to receive the separation force output by the image forming device so that the developing roller 131 and the photosensitive drum are out of contact, and the second protective cover 121 is used to prevent the second separation member 122 from being separated. The second guide member 123 is cylindrical. In this embodiment, the second guide member 123 is sleeved on one end of the developing roller 131 close to the second end 12, and the second guide member 123 is used to guide the developing box 1 to be smoothly installed on the drum assembly. The second forced push member 124 is used to receive the forced push force applied by the drum assembly so that the developing roller 131 and the photosensitive drum are in close contact. In this embodiment, the first forced push portion 1123 and the second forced push member 124 are overlapped along the first direction, and may not be overlapped in other embodiments. In this embodiment, the second pushing member 124 is a conductive material, that is, the second pushing member 124 serves as an electrode to receive the voltage output by the image forming device. The second pushing member 124 is electrically connected to the developing roller 131 and the powder feeding roller to transfer the voltage to the developing roller 131 and the powder feeding roller.

[0072] like Figure 4 and Figure 5 As shown, the bearing bracket 48 is detachably arranged at the first end 11 of the box body 10, and the bearing bracket 48 includes a first insertion hole 481, a second insertion hole 482, a mounting column 483, a first extension portion 484, a second extension portion 485 and a mounting portion 486. The first insertion hole 481 and the second insertion hole 482 penetrate the bearing bracket 48 along the first direction, the first mounting hole 481 is used to support the end of the developing roller 131 located at the first end 11 in the first direction, and the second mounting hole 482 is used to support the end of the powder feeding roller located at the first end 11 in the first direction. The mounting column 483 protrudes along the first direction, and the first mounting column 483 in this embodiment is cylindrical. The first extension portion 484 extends in the first direction in a direction away from the first end 11, and the first extension portion 484 is arc-shaped. The second extension portion 485 extends in the first direction away from the first end 11, and is in an unclosed cylindrical shape. An end of the second extension portion 485 away from the first end 11 in the first direction is farther away from the first end 11 than an end of the first extension portion 484 away from the first end 11 in the first direction. The mounting portion 486 is located at an end of the second extension portion 485 away from the first end 11 in the first direction and is recessed in the first direction toward the first end 11.

[0073] like Figure 5 and Figure 6As shown, the transmission assembly is arranged at the first end 11 of the box body 10, and the transmission assembly includes a driving gear 43, a driving part 40, a developing rotating member 41, a powder feeding gear 42 and a stirring gear 44. In this embodiment, the driving gear 43 and the driving part 40 are arranged separately, and the driving part 40 is provided with a power receiving part 401 at an end away from the first end 1. The power receiving part 401 is a groove concave in the direction close to the first end 11 along the first direction, and a protrusion extending in the radial direction is arranged in the groove. The power receiving part 401 is used to receive the driving force output by the image forming device and drive the driving part 40 to rotate. The driving part 40 transmits the driving force to the driving gear 43, and the driving gear 43 is meshed with the developing rotating member 41, the powder feeding gear 42 and the stirring gear 44 to transmit the driving force. In the second direction, the driving gear 43 is closer to the developing roller 131 than the driving part 40, and the driving part 40 is located between the driving gear 43 and the storage medium 113 in the second direction. In the first direction, the driving part 40 is farther away from the first end 11 than the driving gear, and the rotation axis of the driving part 40 and the rotation axis of the driving gear 43 both extend along the first direction and are parallel. In this embodiment, the driving part 40 and the stirring gear 44 at least partially overlap in the first direction, and in the second direction, the rotation axis of the driving part 40 and the rotation axis of the driving gear 43 have a certain distance. The developing rotating member 41 is installed at one end of the developing roller 131 located at the first end 11 and drives the developing roller 131 to rotate when receiving the driving force, the powder feeding gear 42 is installed at one end of the powder feeding roller located at the first end 11 and drives the powder feeding roller to rotate when receiving the driving force, and the stirring gear 44 is installed at one end of the stirring frame located at the first end 11 and drives the stirring frame to rotate when receiving the driving force. The driving gear 43 is rotatably installed on the bearing bracket 48, specifically, a through hole or a blind hole is provided on the driving gear 43, and in this embodiment, a blind hole is preferably provided, and the mounting column 483 of the bearing bracket 48 is inserted into the blind hole of the driving gear 43 to support the driving gear 43. The bearing support 48 covers a portion of the driving gear 43 in the radial direction to protect the driving gear 43. The present embodiment does not limit the number of gears of the transmission assembly, and the number can be set according to actual needs.

[0074] like Figure 5 - Figure 7As shown, a first transmission connecting member 50 is provided between the driving portion 40 and the driving gear 43 to transmit the driving force from the driving portion 40 to the driving gear 43, and the first transmission connecting member 50 is located between the driving gear 43 and the driving portion 40 in the first direction. A first connecting portion 402 is provided on the end surface of the driving portion 40 close to the first end 11, and the first connecting portion 402 is generally U-shaped, and has a first hole 4021 and a second hole 4022 arranged oppositely. A second connecting portion 431 is provided on the end surface of the driving gear 43 away from the first end 11, and the second connecting portion 431 is also U-shaped and has a third hole 4311 and a fourth hole 4312 arranged oppositely. In the first direction, the first connecting portion 402 is farther away from the first end 11 than the second connecting portion 431, and in the second direction, the first connecting portion 402 is farther away from the developing roller 131 than the second connecting portion 431.

[0075] In this embodiment, the first transmission connector 50 adopts a universal joint structure, and the transmission assembly also includes a first connector 51 and a second connector 52. The first connector 51 and the second connector 52 are specifically cross universal joints. The first connector 51 and the second connector 52 are used to realize variable angle driving force transmission. In this embodiment, the first connector 51 and the second connector 52 are the same in size and shape, but in other embodiments, the size and shape can be set according to actual needs. The first connector 51 includes a first protrusion 511, a second protrusion 512, a third protrusion 513 and a fourth protrusion 514, all of which are cylindrical. The first protrusion 511 and the second protrusion 512 have the same extension direction, the third protrusion 513 and the fourth protrusion 514 have the same extension direction, and the first protrusion 511 and the second protrusion 512 extend in a direction perpendicular to the extension direction of the third protrusion 513 and the fourth protrusion 514. The second connector 52 also includes a fifth protrusion 521, a sixth protrusion 522, a seventh protrusion 523 and an eighth protrusion 524, all of which are cylindrical. The fifth protrusion 521 and the sixth protrusion 522 extend in the same direction, the seventh protrusion 523 and the eighth protrusion 524 extend in the same direction, and the fifth protrusion 521 and the sixth protrusion 522 extend in a direction perpendicular to the seventh protrusion 523 and the eighth protrusion 524. The first protrusion 511 and the second protrusion 512 are a first group of connecting protrusions, the third protrusion 513 and the fourth protrusion 514 are a second group of connecting protrusions, the fifth protrusion 521 and the sixth protrusion 522 are a third group of connecting protrusions, the seventh protrusion 523 and the eighth protrusion 524 are a fourth group of connecting protrusions. In this embodiment, the sizes of the eight protrusions are the same as in the present situation, and in other embodiments, the sizes and shapes can be set according to actual needs.

[0076] The first transmission connection member 50 is used to connect the first connection head 51 and the second connection head 52. The first transmission connection member 50 includes a third connection part 501 and a fourth connection part 502 respectively located at both ends. In the first direction, the third connection part 501 is farther away from the first end 11 than the fourth connection part 502, and in the second direction, the third connection part 501 is farther away from the developing roller 131 than the fourth connection part 502, that is, the first transmission connection member 50 is arranged obliquely to the first direction. The third connection part 501 and the fourth connection part 502 are preferably the same size and shape as the first connection part 402 and the second connection part 431, and are both roughly U-shaped. The third connection part 501 includes a fifth hole 5011 and a sixth hole 5012 arranged opposite to each other, and the fourth connection part 502 includes a seventh hole 5021 and an eighth hole 5022 arranged opposite to each other. The first hole 4021, the second hole 4022, the third hole 4311, the fourth hole 4312, the fifth hole 5011, the sixth hole 5012, the seventh hole 5021 and the eighth hole 5022 are all through holes or blind holes of the same size, and the present embodiment preferably uses through holes.

[0077] The first group of connecting protrusions of the first connecting head 51 are matched and connected with the first connecting portion 402, specifically, the first protrusion 511 is inserted into the first hole 4021, and the second protrusion 512 is inserted into the second hole 4022. The second group of connecting protrusions of the first connecting head 512 are matched and connected with the third connecting portion 501, specifically, the third protrusion 513 is inserted into the fifth hole 5011, and the fourth protrusion 454 is inserted into the sixth hole 5012. The third group of connecting protrusions of the second connecting head 52 are matched and connected with the second connecting portion 431, specifically, the fifth protrusion 521 is inserted into the third hole 4311, and the sixth protrusion 522 is inserted into the fourth hole 4312. The fourth group of connecting protrusions of the second connecting head 52 are matched and connected with the fourth connecting portion 502, specifically, the seventh protrusion 471 is inserted into the seventh hole 5021, and the eighth protrusion 524 is inserted into the eighth hole 5022. That is, the first connector 45 is used to connect the driving part 40 and the first transmission connector 50, and the second connector 52 is used to connect the driving gear 43 and the first transmission connector 50, so that the driving gear 43 is connected to the driving part 40. It can be known that the first connector 51 can move relative to the driving part 40 and the first transmission connector 50, and the second connector 52 can move relative to the driving gear 43 and the first transmission connector 50.

[0078] like Figure 6 and Figure 7As shown, when the driving part 40 receives the driving force output by the image forming device and rotates, the first connecting part 402 rotates following the driving part 40, and its rotation axis is parallel to the first direction. The first connecting part 402 drives the first connecting head 51 connected thereto to rotate, and the rotation direction of the first connecting head 51 changes continuously when following the rotation of the driving part 40, that is, the first connecting head 51 has multiple rotation axes. Further, the multiple rotation axes of the first connecting head 51 are not parallel to the first direction. The rotation of the first connecting head 51 drives the first transmission connecting member 50 to rotate, and the rotation axis of the first transmission connecting member 50 intersects with the first direction. The rotation of the first transmission connecting member 50 drives the second connecting head 52 to rotate, and the second connecting head 52 rotates synchronously with the first connecting head 51, that is, the rotation axes of the first connecting head 51 and the second connecting head 52 remain parallel. The second connecting head 52 rotates to drive the driving gear 43, and the rotation axis of the driving gear 47 is parallel to the first direction. The driving gear 43 then drives the developing rotating member 41, the powder feeding gear 42 and the stirring gear 44 meshed therewith to rotate, thereby causing the developing roller 131, the powder feeding roller and the stirring frame to rotate.

[0079] This embodiment arranges two universal joints, and arranges a first transmission connection member inclined to a first direction between the two universal joints, thereby transmitting the driving force transmitted by the driving unit to the driving gear. The universal joint can realize the characteristic of variable-angle driving force transmission, so that the rotation axis of the driving gear is parallel to the rotation axis of the driving unit, so that the driving force can be transmitted to each gear of the transmission assembly more stably.

[0080] In some embodiments, the transmission structure between the driving gear 43 and the driving unit 40 may be a transmission belt, which is respectively mounted on the driving unit 40 and the driving gear 43 so that the driving unit 40 transmits the driving force to the driving gear 43 .

[0081] Embodiment 2:

[0082] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in Embodiment 1. The main difference between this embodiment and Embodiment 1 is that the arrangement of the transmission assembly in this embodiment is different.

[0083] like Figure 8 and Fig. 9As shown, the first transmission connector 50 in the first embodiment is not provided in this embodiment, and the transmission assembly in this embodiment also includes a first idler wheel 45 and a second idler wheel 46. The driving part includes a power receiving part 401 and a driving gear 43, the rotation axes of the two are the same and are formed in one piece, and the driving gear 43 is closer to the first end 11 than the power receiving part 401 in the first direction. The power receiving part 401 receives the power output by the image forming device and drives the driving gear 43 to rotate. The transmission assembly also includes a developing rotating member 41, a powder feeding gear 42, a first idler wheel 45, a second idler wheel 46 and a stirring gear 44. The second idler wheel 46 and the stirring gear 44 are directly meshed with the driving gear 43 to receive the driving force and rotate, the first idler wheel 45 is meshed with the second idler wheel 46, and the second idler wheel 46 is meshed with the developing rotating member 41 and the powder feeding gear 42 at the same time, and the first idler wheel 45 and the second idler wheel 46 are located between the rotation axis of the power receiving member and the rotation axis of the developing rotating member 41 in the second direction. Through the above design, the developing rotating member 41 and the powder feeding gear 42 are driven at the same time, avoiding the asynchronous rotation of the developing roller 131 and the powder feeding roller 132. The developing rotating member 41, the powder feeding gear 42 and the stirring gear 44 respectively drive the developing roller 131, the powder feeding roller and the stirring frame to rotate.

[0084] The bearing bracket 48 no longer has a first extension portion and a second extension portion. The bearing bracket 48 is used to support the developing roller 131 and the powder feeding roller at the first end 11 . The bearing bracket 48 can rotatably support the first idler wheel 45 , the second idler wheel 46 and the driving unit 40 .

[0085] This embodiment also provides a variant implementation:

[0086] See also Figure 9a Compared with the second embodiment, the only difference of this modification is that the second idler gear 46 is coaxially arranged with the powder feeding gear 42, and the rest of the structure is exactly the same as that of the second embodiment.

[0087] The transmission assembly includes a driving part 40, a driving gear 43, a developing rotating member 41, a powder feeding gear 42, a first idler gear 45 and a second idler gear 46. In this embodiment, the powder feeding gear 42 is not meshed with the first idler gear 45, and the driving part 40 is coaxially fixedly arranged with the driving gear 43. The transmission assembly also includes a third idler gear 47 and a stirring gear 44. The third idler gear 47 is meshed with the driving gear 43 and the stirring gear 44 at the same time to transmit power to the stirring gear 44. The stirring gear 44 is fixedly installed at one end of the stirring frame 133 located at the first end 11, and the stirring gear 44 drives the stirring frame 133 to rotate.

[0088] The second idler gear 46 meshes with the driving gear 43 and meshes with the first idler gear 45 to transmit power, so that the first idler gear 45 transmits power to the developing rotating member 41 to rotate the developing roller 131. The second idler gear 46 is coaxially arranged with the powder feeding gear 42, and the second idler gear is rotatable relative to the powder feeding gear 42, and there is no power transmission between the two. The powder feeding gear 42 meshes with the driving gear 43 to obtain power. Further, the second idler gear 46 is rotatably supported by the powder feeding roller 132 or the powder feeding gear 42.

[0089] Since the powder feeding gear 42 drives the powder feeding roller to rotate, and there will be a certain friction when the powder feeding roller rotates in the box body 10, the friction will affect the powder feeding gear 42 to a certain extent, and then affect the powder feeding gear 42 to transmit power to the developing rotating member 41. Therefore, this embodiment transmits power to the developing rotating member by setting a second idler wheel 46. In the process of transmitting power, the second idler wheel 46 has no unnecessary obstacles, so that the developing rotating member 41 can receive power more stably and drive the developing roller 131 to rotate, thereby allowing the developing roller 131 to stably transfer the developer to the photosensitive drum 21.

[0090] Embodiment three:

[0091] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in Embodiment 1. The main difference between this embodiment and Embodiment 1 is that the transmission assembly structure is different.

[0092] like Fig.10 and Fig.11 As shown, in this embodiment, the developing rotating member 41 and the powder feeding gear 42 are directly meshed with the driving gear 43, and the driving unit 40 includes a power receiving unit 401 for receiving the driving force output by the image forming device. The driving gear 43 is provided with a seventh connecting portion 433, and the driving unit 40 is correspondingly provided with an eighth connecting portion (not shown in the figure).

[0093] The seventh connection portion 433 and the eighth connection portion are through holes or blind holes, and in this embodiment, they are preferably blind holes.

[0094] A first transmission connection member 50 is provided between the driving part 40 and the driving gear 43. In the present embodiment, the first transmission connection member 50 is a connecting rod. The connecting rod has a third connecting part 501 and a fourth connecting part 502. The third connecting part 501 has a first connecting cylinder 5015, and the fourth connecting part 502 has a second connecting cylinder 5025. The first connecting cylinder 5015 extends in a direction close to the first end 11, and the second connecting cylinder 5025 extends in a direction away from the first end 11. The first connecting cylinder 5015 is inserted into the seventh connecting part 433 of the driving gear 43, and the second connecting cylinder 5025 is inserted into the fourth mounting hole of the driving part 40, so that the connecting rod connects the driving gear 43 and the driving part 40. The distance between the rotation axes of the two ends of the connecting rod, that is, the rotation axes of the first connecting cylinder 5015 and the second connecting cylinder 5025 is equal to the distance between the rotation axes of the driving gear 43 and the driving part 40, so that the driving gear 43 and the driving part 40 can realize synchronous rotation through the connecting rod.

[0095] In some embodiments, the seventh connecting portion 433 may also be set on the connecting rod, the first connecting cylinder 5015 may be set on the driving gear 43, the fourth mounting hole may also be set on the connecting rod, and the second connecting cylinder 5025 may also be set on the driving portion 40, and the transmission principle is the same.

[0096] When the driving unit 40 receives the driving force output by the image forming device and generates rotation, the first transmission connector 50 drives the driving gear 43 to rotate, so that the driving force is transmitted to each gear of the transmission assembly, thereby driving the components in the developing assembly to rotate.

[0097] Embodiment 4:

[0098] like Figure 12 to Figure 13 As shown, the main difference between this embodiment and the second embodiment is that the stirring gear 44 and the third idler gear 47 are eliminated, the stirring frame 133 is coaxially fixedly connected with the driving part 40, and the rest of the structure is exactly the same as that of the second embodiment.

[0099] The rotation axis of the stirring frame 133 is coaxially arranged with the rotation axis of the driving part 40. The right end of the stirring frame 133 extends out of the first end 11 of the box body 1. The mounting portion 486 on the bearing bracket 48 is a hollow through hole. The right end of the stirring frame 133 can extend into the interior of the mounting portion 486 and be coaxially connected to the driving part 40.

[0100] The driving part 40 includes a power receiving part 401 , a second circular tube part 405 , a partition plate 406 , and a driving gear 43 , which are integrally formed or separated but fixedly connected as one.

[0101] The present embodiment specifically introduces an integrally formed power receiving component, wherein the central axes of the power receiving part 401 and the second circular tube part 405 are parallel to the first direction, and the central axes of the power receiving part 401 and the second circular tube part 405 are coaxial, and in the first direction, the partition plate 406 is located between the power receiving part 401 and the second circular tube part 405, and the power receiving part 401 and the second circular tube part 405 are integrally connected together through the partition plate 406, and the power receiving part 401 is further to the right (i.e., farther away from the box body 1) than the second circular tube part 405, and the inner wall of the power receiving part 401 protrudes along the radial direction toward the direction close to the central axis of the power receiving part 401 to form two protrusions, and the two protrusions are integrally connected to the inner circumferential surface of the power receiving part 401 and the right end face of the partition plate 406.

[0102] The driving gear 43 is coaxially and integrally formed with the second circular tube portion 405 and is arranged on the outer peripheral surface of the second circular tube portion 405, and the driving gear 43 is further to the left (i.e., closer to the box body 1) than the power receiving portion 401, and a transmission column coaxial with the driving gear 43 is integrally formed on the left end face of the partition 406, and a transmission hole 404 formed by being recessed from left to right is integrally formed on the transmission column, and the transmission hole 404 is a D-shaped hole, and a D-shaped portion 1331 matching the transmission hole 404 is provided at the right end of the stirring frame 133, and the D-shaped portion 1331 is inserted into the D-shaped hole so that the power of the power receiving component can be directly transmitted to the stirring frame 133 without the need for transmission through an intermediate gear, thereby simplifying the structure, reducing the number of parts, and reducing costs.

[0103] Since the stirring frame 133 in this embodiment is coaxial with the driving part 40 (that is, coaxial with the power receiving part 401), it is arranged closer to the developing roller 131 and the powder feeding roller in the second direction compared with the prior art (in the prior art, the rotation axis of the stirring frame 133 is farther from the rotation axis of the developing roller 131 in the second direction than the rotation axis of the power receiving part 401 is from the rotation axis of the developing roller 131). When the developing box disclosed in this embodiment is installed in the image forming device, if the direction of gravity is roughly parallel to the second direction (that is, the up and down direction), the developer in the box body 1 will naturally fall toward the lower end of the box body 1 (that is, the third end 13 where the developing roller 131 is located) under the action of gravity. Therefore, the developer will not accumulate at the upper end of the box body 1. Therefore, setting the stirring frame 133 to be coaxial with the power receiving part can improve the stirring efficiency and prevent the stirring frame 133 from stirring to a position where there is no developer. If the direction of gravity is substantially perpendicular to the second direction, the stirring frame 133 may be provided with blades or the stirring blades may be enlarged so that the stirring frame 133 can more fully stir the developer in the box body 1 .

[0104] Embodiment five:

[0105] This embodiment is similar to the first embodiment, and the main difference is that the first transmission connecting member 50 in this embodiment is a universal joint, and does not have the first connecting head 51 and the second connecting head 52. At the same time, this embodiment also has a first idler wheel 45 and a second idler wheel 46.

[0106] like Fig.14 - Fig.16 As shown, the transmission assembly is arranged at the first end 11 of the box body 10, and the transmission assembly includes a driving part 40, a developing rotating part 41, a powder feeding gear 42, a first idler wheel 45, a second idler wheel 46, a driving gear 43 and a first transmission connecting member 50. In this embodiment, the driving gear 43 is directly connected to the stirring frame, that is, the driving gear 43 replaces the stirring gear and plays the role of the stirring gear. In the subsequent description of this embodiment, the stirring gear is replaced by the driving gear 43. The driving part 40 is provided with a power receiving part 401 at an end away from the first end 11. The power receiving part 401 is a groove concave inward along the first direction toward the direction close to the first end 11, and a protrusion extending in the radial direction is arranged in the groove. The power receiving part 401 is used to receive the driving force output by the image forming device and drive the driving part 40 to rotate. In this embodiment, the driving part 40 is directly connected to the driving gear 43 (stirring gear) through a connecting member to transmit the driving force, that is, the first transmission connecting member 50 can connect two different components in the transmission assembly to transmit the driving force. In the second direction, the driving part 40 is closer to the developing roller 131 than the stirring gear 44. The rotation axis of the driving part 40 and the rotation axis of the stirring gear 44 both extend in the first direction and are parallel. The stirring gear 44 meshes with the second idler gear 46 to transmit the driving force, the first idler gear 45 meshes with the second idler gear 46 to receive the driving force, and the first idler gear 45 meshes with the developing rotating member 41 and the powder feeding gear 42 to transmit the driving force. The developing rotating member 41 is installed at one end of the developing roller 131 located at the first end 11 and drives the developing roller 131 to rotate when receiving the driving force, the powder feeding gear 42 is installed at one end of the powder feeding roller located at the first end 11 and drives the powder feeding roller to rotate when receiving the driving force, the stirring gear 44 is installed at one end of the stirring frame located at the first end 11 and drives the stirring frame to rotate when receiving the driving force, and the first idler gear 45 and the second idler gear 46 are rotatably supported by the box body 10. This embodiment does not limit the number of gears and the meshing relationship of the transmission assembly, and can be set according to actual needs.

[0107] In this embodiment, the first transmission connecting member 50 is specifically a universal head, which is used to connect the driving part 40 and the driving gear 43 (stirring gear). The universal head includes a third connecting part 501 and a fourth connecting part 502. The extension direction of the universal head can intersect with the first direction. In the first direction, the third connecting part 501 is farther away from the first end 11 than the fourth connecting part 502. In this embodiment, the third connecting part 501 and the fourth connecting part 502 have the same structure and are both spherical structures. The spherical structure is specifically a semi-spherical structure in this embodiment, and can also be a part of a complete sphere in other embodiments, as long as universal rotation can be achieved. It should be pointed out that universal rotation refers to rotation in three directions in three-dimensional directions, not 360-degree rotation in three directions, but actually partial angle rotation. Further in this embodiment, universal rotation means that the developing box has a unique and determined rotation axis after assembly. The third connection part 501 includes a first connection protrusion 5013 and a second connection protrusion 5014, which protrude radially from the third connection part 501 and are specifically cylindrical. The fourth connection part 502 includes a third connection protrusion 5023 and a fourth connection protrusion 5024, which protrude radially from the fourth connection part 502 and are specifically cylindrical.

[0108] The driving part is provided with a fifth connecting part 403 near the first end 11 in the first direction. The fifth connecting part 403 is an inwardly concave spherical groove matched with the third connecting part 501. The third connecting part 501 can be installed in the first connecting part 402. The fifth connecting part 403 is matched with a first connecting groove 4031 and a second connecting groove 4032. The first connecting groove 4031 and the second connecting groove 4032 are both arc-shaped grooves, so as to adapt to the outer circumferential surfaces of the first connecting protrusion 5013 and the second connecting protrusion 5014. When the third connecting part 501 is installed on the first connecting part 402, the first connecting protrusion 5013 cooperates with the first connecting groove 4031, and the second connecting protrusion 5014 cooperates with the second connecting groove 4032, so that the universal head 460 can receive rotational power from the driving part 40.

[0109] A sixth connecting portion 432 is provided on the driving gear 43 (stirring gear). The sixth connecting portion 432 has the same structure as the fifth connecting portion 403. The sixth connecting portion 432 is matched and connected with the fourth connecting portion 502 of the universal head. The sixth connecting portion 432 includes a third connecting groove 4321 and a fourth connecting groove 4322. The third connecting groove 4321 and the fourth connecting groove 4322 are arc-shaped grooves, so as to adapt to the outer circumferential surfaces of the third connecting protrusion 5023 and the fourth connecting protrusion 5024. The third connecting protrusion 5023 of the second connecting head 462 is matched and connected with the third connecting groove 4321, and the fourth connecting protrusion 5024 is matched and connected with the fourth connecting groove 4322, so that the universal head can transmit rotational power to the driving gear 43 (stirring gear).

[0110] When the power receiving part 401 of the driving part 40 starts to receive the driving force output by the image forming device, the fifth connecting part 403 drives the universal head to rotate by connecting with the sixth connecting part 432. The universal head 460 has multiple rotation axes, and none of the rotation axes are parallel to the first direction. The fourth connecting part 502 of the universal head is connected to the sixth connecting part 432 on the driving gear 43 (stirring gear), so that the driving gear 43 (stirring gear) rotates with the universal head. The rotation axis of the driving gear 43 (stirring gear) is parallel to the rotation axis of the driving part 40 and has a first fixed distance, that is, the driving part 40 drives the driving gear 43 (stirring gear) to rotate in the same direction, so that the driving gear 43 (stirring gear) transmits the driving force to other gears, and enables the developing assembly to work normally in the developing box 1.

[0111] In some embodiments, the third connection portion 501 may be configured as a spherical groove, the first connection portion 402 may be configured as a spherical structure, the fourth connection portion 502 may be configured as a spherical groove, and the second connection portion 451a may be configured as a spherical structure.

[0112] Embodiment six:

[0113] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in Embodiment 5. The main difference between this embodiment and Embodiment 5 is that a second transmission connecting member 60 is provided in this embodiment.

[0114] like Fig.17 and Fig.18 As shown, the transmission assembly of this embodiment includes a driving portion 40, a driving gear 43, a developing rotating member 41, a powder feeding gear 42, a second transmission connecting member 60, a third idler gear 47 and a stirring gear 44. The third idler gear 47 is meshed with the driving gear 43 and the stirring gear 44 at the same time, and the driving gear 43 drives the stirring gear 44 through the third idler gear 47.

[0115] In this embodiment, the developing rotating member 41 has a first transmission groove 411, the powder feeding gear 42 has a second transmission groove 421, the second transmission connecting member 60 is a belt, the powder feeding gear 42 is meshed with the driving gear 43, and the powder feeding gear 42 drives the developing rotating member 41 through the belt.

[0116] By providing the second transmission connection member 60, the developing rotating member 41 is driven by the powder feeding gear 42 and then the developing roller 131 is driven, thereby reducing the number of gears and reducing the cost of the developing box.

[0117] Embodiment seven:

[0118] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in Embodiment 6. The main difference between this embodiment and Embodiment 6 is that this embodiment is provided with a first idler wheel 45 relative to Embodiment 6, and the second transmission connecting member 60 of this embodiment is provided differently from that of Embodiment 6.

[0119] like Fig.19 As shown, in this embodiment, the transmission assembly also includes a first idler wheel 45, which is meshed with the driving gear 43 to receive the driving force. A third transmission groove (not shown) is provided on the first idler wheel 45, and a first transmission groove 411 is provided on the developing rotating member 41. A second transmission connecting member 60 is provided between the first idler wheel 45 and the developing rotating member 41. In this embodiment, the second transmission connecting member 60 is a belt, and the transmission belt is simultaneously mounted on the first transmission groove 511 and the third transmission groove so that the developing rotating member 41 rotates in the same direction as the first idler wheel 46. The rest of the process is exactly the same as that in Example 5, and no further details are given again.

[0120] Embodiment eight:

[0121] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in the sixth embodiment. The difference between this embodiment and the sixth embodiment is that the second transmission member 60 in this embodiment is a connecting rod.

[0122] like Fig. 20 and Fig.21 As shown, the second transmission connecting member 60 is a connecting rod, which is respectively provided with a first fixed portion 601 and a second fixed portion 602 at both ends, a first connecting column 422 is provided on the powder feeding gear 42, and a second connecting column 412 is provided on the developing rotating member 41. The connecting rod cooperates with the first fixed portion 601 and the first connecting column 422, and cooperates with the second fixed portion 602 and the second connecting column 412 to connect the powder feeding gear 42 with the developing rotating member 41. The driving process is exactly the same as that of Example 6, and no further details are given here.

[0123] Furthermore, in this embodiment, the gear arrangement in the seventh embodiment can be set in this embodiment, that is, the second transmission connection member 60 in the seventh embodiment is replaced by a belt to a connecting rod in this embodiment, and the rest of the structure is exactly the same as that of the seventh embodiment, and can also achieve the same effect as that of the seventh embodiment.

[0124] Embodiment nine:

[0125] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in the fifth embodiment. The difference between this embodiment and the fifth embodiment lies in the different arrangement of the transmission assembly.

[0126] like Fig. 22 and Fig.23 As shown, the transmission assembly in this embodiment includes a driving part 40, a driving gear 43, a first idler wheel 45, a second idler wheel 46, a powder feeding gear 42 and a developing rotating member 41. The driving part 40 includes a power receiving part 401 for receiving a driving force, the driving gear 43 is coaxially fixed with the power receiving part 401, the first idler wheel 45 is meshed with the driving gear 43 to receive the driving force, and the second idler wheel 46 is meshed with the first idler wheel 45, the powder feeding gear 42 and the developing rotating member 41 at the same time to transmit the driving force from the first idler wheel 45 to the developing rotating member 41 and the powder feeding gear 57, so that the developing roller 131 and the powder feeding roller rotate.

[0127] In this embodiment, the box body 10 includes an upper cover 101, and the friction part 151 is arranged on the upper cover 101. The developing box 1 also includes a stirring frame 133, which is located in the box body 10. The stirring frame 133 extends along the first direction and is rotatably supported by the first end 11 and the second end 12, and the stirring frame 133 is covered by the upper cover 151. A support column is also arranged in the box body 10, and the support column is used to strengthen the strength of the box body 10. In this embodiment, the number of the support columns is specifically two, namely, a first support column 171 and a second support column 172. The first support column 171 and the second support column 172 both extend along the third direction. The two support columns are arranged in the first direction. In this embodiment, the support columns are all block-shaped, and their length in the first direction is greater than their length in the second direction.

[0128] In this embodiment, the stirring frame 133 and the driving part 40 are coaxially fixed and rotated, that is, in this embodiment, the driving part 40 is installed at one end of the stirring frame 133 located at the first end 11 in the first direction. When the driving part 40 receives the driving force, the driving part 40 directly drives the stirring frame 133 to rotate. The stirring frame 133 is provided with a stirring member that rotates with the stirring frame 133. The stirring member is used to stir the developer in the box body 10 to prevent the developer from agglomerating. In this embodiment, the stirring member is specifically a stirring blade, and the stirring blade extends along the radial direction of the stirring frame 133. In this embodiment, the number of stirring blades is specifically three, namely, the first stirring blade 691, the second stirring blade 692 and the third stirring blade 693. The three stirring blades are arranged along the first direction, and there is a gap between the stirring blades, that is, there is a first gap between the first stirring blade 691 and the second stirring blade 692 in the first direction, and there is a second gap between the second stirring blade 692 and the third stirring blade 693 in the first direction. The length of the first gap and the second gap in the first direction is greater than the length of the first support column 171 and the second support column 172 in the first direction. When the stirring frame 133 rotates, the first gap and the second gap are used to avoid the first support column 171 and the second support column 172. This embodiment does not limit the number of support columns and stirring blades, and can be limited according to actual conditions. In some embodiments, support columns may not be provided to simplify the structure of the developer box 1.

[0129] Embodiment ten:

[0130] This embodiment is similar to the first embodiment, and the main difference is that:

[0131] See also Fig.24-26, the transmission assembly includes a driving part 40 and a driving gear 43 rotatably mounted on the first end 11 of the box body 1, and the driving gear 43 includes a first driving gear 431 and a second driving gear 432. The rotation axis of the driving part 40 is parallel to the first direction. The driving part 40 includes a power receiving part 401, and the first driving gear 431, the second driving gear 432 and the power receiving part 401 are coaxially integrally formed, and the second driving gear 432 is located between the first driving gear 431 and the power receiving part 401 in the first direction, and the first driving gear 431 is closer to the first end 11 of the box body 1 than the power receiving part 401 in the first direction. The diameter of the second driving gear 432 is smaller than the diameter of the first driving gear 431, and the power receiving part 401 is used to connect with the power output shaft on the image forming device to receive the power output of the image forming device. The first end 11 of the box body 1 is integrally formed with a support shaft protruding to the right along the first direction, and the support shaft is in the shape of a hollow cylindrical tube. The left end surface of the driving part 40 is integrally formed with a mounting hole 214a that matches the outer circumferential surface of the support shaft 112a. The mounting hole is a blind hole, and the inner circumferential surface of the mounting hole is supported by the outer circumferential surface of the support shaft 112a, so that the driving part 40 can be rotatably mounted on the support shaft. The right end of the stirring frame 133 extends rightward from the first end 11 of the box body 1, and the stirring frame 133 is arranged on the left end surface of the driving part 40. The right end of the frame 133 is located inside the supporting shaft, and a D-shaped portion 1331 is integrally formed at the right end of the stirring frame 133. A transmission hole for cooperating with the D-shaped portion 1331 is provided in the driving portion 40, and the transmission hole is specifically a D-shaped hole 404. The D-shaped portion 1331 at the right end of the stirring frame 133 is inserted into the D-shaped hole 404, so that the rotational power of the driving portion 40 can be directly transmitted to the stirring frame 133 without the need for other gears or transmission components for transmission, thereby reducing the number of parts, reducing costs, and reducing assembly difficulty.

[0132] The rotation axis of the developing roller 131 is parallel to the first direction, and the connecting direction of the rotation axis of the developing roller 131 and the rotation axis of the driving unit 40 is parallel to the second direction. The rotation axis of the stirring frame 133 coincides with the rotation axis of the driving unit 40 .

[0133] The developing rotatable member 41 meshes with the first driving gear 431. The powder feeding gear 42 meshes with the second driving gear 432. In other embodiments, the developing rotatable member 41 and the first driving gear 431, and the powder feeding gear 42 and the second driving gear 432 may be indirectly driven instead of being directly meshed.

[0134] The rotation axis of the driving portion 40 is closer to the fifth end 15 and the fourth end 14 of the box body 1 than the rotation axis of the developing roller 131, and the rotation axis of the driving portion 40 is closer to the fifth end 15 and the fourth end 14 of the box body 1 than the rotation axis of the powder feeding roller 132. The driving portion 40 overlaps with the stirring frame 133 in the axial direction.

[0135] Optionally, an idler gear can be set between the developing rotating member 41 and the first driving gear 431 for transmission, and an idler gear can also be set between the powder feeding roller 132 and the second driving gear 432 for transmission, so that the rotation axis of the driving part 40 can be further back, so that the stirring frame 133 can stir the developer at a further back position in the accommodating part, thereby achieving a more thorough stirring effect.

[0136] The detected component is arranged at the second end 12 of the box body 1, and the detected component includes a detection gear 7, which is a toothless gear. The detection gear 7 can rotate around a rotation axis parallel to the first direction. The detection gear 7 is rotatably mounted at the second end 12 of the box body 1, and a detected protrusion 71 is integrally formed on the detection gear 7. The detected protrusion 71 can rotate and move with the detection gear 7. The left end of the stirring frame 133 is integrally formed with a transmission gear, which meshes with the detection gear 7 to transmit power to the detection gear 7. The detected protrusion 71 is used to contact the detection rod in the image forming device, so that when the detection gear 7 rotates, the detected protrusion 71 can move and move the detection rod in the image forming device, so that an electrical signal is generated in the image forming device, and then when the detection gear 7 rotates to a position where it is disengaged from the transmission gear, the detection gear 7 stops rotating. If the developing cartridge is old, the detection gear 7 is already in a disengaged state when it is installed in the image forming device, so the detection rod in the image forming device cannot be moved, so that the image forming device determines whether the developing cartridge is new or old.

[0137] The above are only some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, or the above technical solutions can be freely combined, including the technical features between the above different embodiments, which all belong to the protection scope of the present invention.

Claims

1. A developing cartridge, detachably mounted together with a drum assembly having a photosensitive drum in an image forming device, characterized in that: include: The box body has a first end and a second end in a first direction, and a third end and a fourth end in a second direction, and the first direction and the second direction are perpendicular; a developing roller rotatably disposed on the box body along a first direction; A powder feeding roller, which is rotatably arranged on the box body along a first direction; A stirring frame, which is rotatably arranged on the box body along a first direction; an identification component, which is arranged at the first end of the box body, and includes a storage medium, wherein the storage medium has an electrical contact surface, and the storage medium can be electrically connected to the image forming device through the electrical contact surface; as well as A transmission assembly, which is arranged at the first end of the box body, comprises: a driving unit, which is provided with a power receiving unit, the power receiving unit being used to receive a driving force from the image forming device; A driving gear, which is transmission-connected with the power receiving part to receive the driving force; a developing rotating member, which is coaxially fixedly arranged with the developing roller and is used to directly or indirectly obtain the driving force from the driving gear and transmit it to the developing roller; and The powder feeding gear is coaxially fixedly arranged with the powder feeding roller, and is used for directly or indirectly obtaining the driving force from the driving gear and transmitting it to the powder feeding roller.

2. The developing cartridge according to claim 1, characterized in that: The transmission assembly also includes a first transmission connecting member, both ends of which are rotatably connected to the driving part and the driving gear respectively, and the driving part can transmit the driving force to the driving gear through the first transmission connecting member. In the second direction, the distance between the rotation axes of the two ends of the first transmission connecting member is equal to the distance between the rotation axes of the driving part and the driving gear, and the rotation axis of the first transmission connecting member does not coincide with the rotation axis of the driving part, so that the driving part and the driving gear rotate synchronously.

3. The developing cartridge according to claim 2, characterized in that: The driving gear is fixedly connected to the stirring frame, the rotation axis of the stirring frame is coaxial with the rotation axis of the driving gear and does not coincide with the rotation axis of the driving part, and the driving part can drive the stirring frame through the first transmission connection member, so that the stirring frame can rotate in the same direction as the driving part.

4. The developing cartridge according to claim 2, wherein: The first transmission connection member is a universal head, and the driving part and the driving gear are transmission connected through the universal head. The universal head includes a first connection end and a second connection end. The driving part is provided with a fifth connection part, and the first connection end is rotatably connected to the fifth connection part. The driving gear is provided with a sixth connection part, and the second connection end is rotatably connected to the sixth connection part, so that the universal head can rotate universally relative to the driving part and the driving gear.

5. The developing cartridge according to claim 1, wherein: The transmission assembly further includes a first idler wheel and a second idler wheel, and the developing rotating member receives the driving force transmitted by the driving gear through the first idler wheel and the second idler wheel.

6. The developing cartridge according to claim 5, characterized in that: The first idler wheel is meshed with the developing rotating member and the powder feeding gear at the same time, and the second idler wheel is meshed with the first idler wheel and the driving gear at the same time. In the second direction, the driving gear drives the developing rotating member and the powder feeding gear through the first idler wheel and the second idler wheel.

7. The developing cartridge according to claim 5, characterized in that: The second idler wheel is coaxially arranged with the powder feeding gear, and is rotatably supported by the powder feeding gear. The second idler wheel and the powder feeding gear can rotate relative to each other without power transmission. The second idler wheel and the powder feeding gear are both meshed with the driving gear, and the first idler wheel is simultaneously meshed with the developing rotating member and the second idler wheel to transmit the driving force to the developing rotating member.

8. The developing cartridge according to claim 1, wherein: The transmission assembly also includes a second transmission connection member, and the developing rotating member indirectly receives the driving force transmitted by the driving gear through the second transmission connection member, and the second transmission connection member is a belt or a connecting rod.

9. The developing cartridge according to claim 8, characterized in that: The developing rotating member is connected to the powder feeding gear through the second transmission connecting member, the developing rotating member is provided with a first mounting groove, the powder feeding gear is provided with a second mounting groove, the belt connects the developing rotating member with the powder feeding gear through the first mounting groove and the second mounting groove, the powder feeding gear is meshed with the driving gear, the powder feeding gear receives the driving force of the driving gear and drives the developing rotating member to rotate synchronously through the belt; or A first connecting column is provided on the developing rotating member, and a second connecting column is provided on the powder feeding gear. The connecting rod connects the powder feeding gear to the developing rotating member via the first connecting column and the second connecting column. The powder feeding gear receives the driving force of the driving gear and drives the developing rotating member to rotate synchronously via the connecting rod.

10. The developing cartridge according to claim 8, characterized in that: The transmission assembly also includes a first idler wheel, and the developing rotatable member is connected to the first idler wheel via the second transmission connecting member. The first idler wheel is meshed with the driving gear to receive the driving force transmitted by the driving gear and then drives the developing rotatable member to rotate via the second transmission connecting member.

11. The developing cartridge according to claim 1, characterized in that: The box body also includes a first support column and a second support column. The rotation axis of the stirring frame coincides with the rotation axis of the driving part. The driving part is fixedly connected to the stirring frame to drive the stirring frame to rotate.

12. The developing cartridge according to claim 11, characterized in that: The driving part is provided with a transmission hole at one end facing the box body, and the stirring frame has a transmission part matching the transmission hole at one end in the first direction, and the stirring frame can be coaxially fixedly connected with the driving part through the cooperation between the transmission hole and the transmission part.

13. The developing cartridge according to claim 11, characterized in that: The stirring frame includes a first stirring blade, a second stirring blade and a third stirring blade, the first stirring blade and the second stirring blade have a first interval in the first direction, the second stirring blade and the third stirring blade have a second interval in the first direction, the lengths of the first interval and the second interval in the first direction are greater than the lengths of the first support column and the second support column in the first direction, so that the first interval and the second interval can avoid the first support column and the second support column.

14. The developing cartridge according to any one of claims 1 to 13, characterized in that: The developing box also includes a detected component, which is arranged at the second end of the box body, and includes a detection gear. The detection gear can rotate around an axis extending along the first direction, and the detection gear is a toothless gear with a detection protrusion thereon. When the detection gear rotates, it drives the detection protrusion to rotate, and then cooperates with the image forming device, so that the image forming device can identify the developing box.

15. The developing cartridge according to any one of claims 1 to 13, characterized in that: The developing box also includes a first pushing portion and a first separating portion, the first pushing portion is used to receive the pushing force applied by the drum assembly along the second direction so that the developing roller contacts the photosensitive drum, the first separating portion is used to receive the separating force applied by the image forming device so that the developing roller is separated from the photosensitive drum, and the first separating portion is closer to the developing roller in the second direction than the first pushing portion.

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