Developing cartridge

Abstract

The present application provides a developing cartridge that is detachably installed in an image forming apparatus, comprising: a cartridge body, a driving member, a detected mechanism, and a positioning portion; the driving member is located at a first end of the cartridge body, and the driving member receives a driving force from the image forming apparatus; the detected mechanism is located at a second end of the cartridge body, and the detected mechanism is detected by a detection device of the image forming apparatus. The driving member and the detected mechanism include a rotating member, and the rotating member is rotatably provided on the developing cartridge; the rotating member is clamped and positioned by the positioning portion. In the developing cartridge of the present invention, the detection gear is clamped by the positioning portion, and the position of the detection gear detected in the developing cartridge is determined by the position of the detection device in the image forming apparatus. Therefore, the position change of the detection gear in the developing cartridge is limited. Thus, when there is no rotating shaft protruding to support the detection gear at the position of the detection gear in the developing cartridge, the detection gear is clamped and positioned by the positioning portion to adapt to diverse developing cartridges.

Description

Technical Field

[0001] The present invention relates to the technical field of imaging equipment, and in particular to a developing box. Background Art

[0002] The image forming device is provided with a detection device, which is used to detect information of a developing cartridge installed in the image forming device, the information of the developing cartridge including whether the developing cartridge is correctly installed, the developer capacity contained in the developing cartridge, whether the developing cartridge is new or old, etc. The developing cartridge carries the developer through the surface of the developing element, so that the developer is transferred from the developing cartridge to the photosensitive element opposite to the developing element, and an image composed of the developer is formed on the photosensitive element.

[0003] like Figure 1 and Figure 2 As shown, the developer box 1 in the prior art includes a box body 10, a driving member 20, a developing element 30, a powder feeding element (not shown in the figure), an agitator (not shown in the figure) and a detection gear 40. The detection gear 40 has a protrusion, and the protrusion can directly or indirectly move the image forming device so that the developer box is detected by the image forming device. In the rotation axis of the developing element 30, the driving member 20 is located at the first end 10a of the developing box 1, and the detection gear 40 is located at the second end 10b of the developing box 1; the powder feeding element and the agitator are located inside the box body 10 and supported by the box body 10, and a transmission gear is arranged at each end of the agitator, and the two transmission gears are respectively meshed with the driving member 20 and the detection gear 40 (including direct meshing and indirect meshing), so as to transmit the driving force received by the driving member 20 to the detection gear 40; under the action of the driving force, the detection gear 40 drives the protrusion to rotate and is detected by the image forming device.

[0004] In order to position the rotating parts in the developing box (such as the driving part 20, the detection gear 40 and the transmission gear), in the above-mentioned structure, a protruding shaft is set on the box body 10 or the protective cover 60 of the developing box 1 to support the rotating parts. The shaft is the rotating axis of the rotating part, and the stability of the positioning of the rotating part is poor. At the same time, with the diversified demands on the developing boxes, the positioning method of the rotating parts also needs to be diversified. Summary of the invention

[0005] The embodiment of the present invention provides a developing box to adapt to various developing boxes.

[0006] One aspect of the present invention provides a developing cartridge that can be detachably mounted to an image forming device, wherein the developing cartridge has a first end and a second end oppositely disposed in a length direction thereof, comprising:

[0007] A box body, containing a developer inside;

[0008] A driving member, located at a first end of the box body, the driving member receiving a driving force from the image forming device;

[0009] The detected mechanism is located at the second end of the cartridge body and is detected by the detection device of the image forming apparatus. At least one of the driving member and the detected mechanism includes a rotating member, and the rotating member is rotatably provided on the developing cartridge.

[0010] Positioning portions, the rotating member is clamped and positioned by the positioning portions, and the number of the positioning portions may be one or more.

[0011] In the developing cartridge of the present invention, the rotating member is clamped by the positioning portions, and the position of the rotating member detected in the developing cartridge is determined by the position of the detection device in the image forming apparatus. Therefore, the position change of the rotating member in the developing cartridge is limited. Thus, when there is no rotating shaft protruding from the position of the rotating member in the developing cartridge to support the rotating member, the rotating member is clamped and positioned by the positioning portions to adapt to various developing cartridges.

[0012] In some embodiments, when the rotating member is part of the driving member, the rotating member is a gear; when the rotating member is part of the detected mechanism, the rotating member can be set as a gear or a friction wheel or a cam or a sprocket or a disc or a lever or a pinion. Thus, the rotating member can be set as the above components, and the above components can all be installed by the method provided by the present disclosure.

[0013] In some embodiments, there are a plurality of the positioning portions, and the shapes of the plurality of positioning portions are the same or different; the plurality of positioning portions can all be set as gears or friction wheels or positioning protrusions, and the plurality of positioning portions can also be formed by at least two combinations of gears, friction wheels and positioning protrusions.

[0014] Thus, the rotating member is generally set as a detection component that forms a detection cooperation with the image forming apparatus and has protrusions. The positioning portions can also be set as a plurality of positioning protrusions to position the rotating member.

[0015] In some embodiments, the rotating member has a circumferential outer surface, and all of the plurality of positioning portions are in contact with the circumferential outer surface.

[0016] In some embodiments, the rotating member has a circumferential inner surface, and all of the plurality of positioning portions are in contact with the circumferential inner surface.

[0017] In some embodiments, the rotating member has a circumferential outer surface and a circumferential inner surface. Among the plurality of positioning portions, a part of the positioning portions are in contact with the circumferential outer surface, and another part of the positioning portions are in contact with the circumferential inner surface.

[0018] Thus, the rotating member is positioned by the way of the common rotation and cooperation between the positioning portions and the rotating member.

[0019] In some embodiments, the positioning protrusion is provided as an arc-shaped column, a cylindrical column, a triangular column, a square column, a "T"-shaped column, an "L"-shaped column, or an "X"-shaped column.

[0020] In some embodiments, the positioning portion is provided as a circular or elliptical groove or through hole, and the rotating member has a cylindrical portion, and the cylindrical portion is inserted into the groove or through hole to position the rotating member.

[0021] In some embodiments, the positioning portion is provided as a plurality of concentrically distributed annular grooves, and the rotating member has a plurality of struts, and the plurality of struts are respectively inserted into the plurality of annular grooves to position the rotating member.

[0022] In some embodiments, the positioning portion is directly or indirectly provided on the cartridge body.

[0023] In some embodiments, a protective cover is further included, the protective cover covers at least a part of the rotating member, and the positioning portion is provided on the protective cover.

[0024] In some embodiments, a rotating shaft member, a first transmission member, and a second transmission member are further included. The first transmission member is installed at one end of the rotating shaft member and is located at the first end, and the second transmission member is installed at the other end of the rotating shaft member and is located at the second end. The first transmission member receives the driving force transmitted by the driving member, and the second transmission member transmits the received driving force to the detected mechanism.

[0025] In some embodiments, the rotating member is a part of the detected mechanism and has a protrusion, and the protrusion directly or indirectly toggles the detection device so that the developing cartridge is detected by the image forming apparatus.

[0026] In some embodiments, the rotating member is a part of the detected mechanism, and the rotating member meshes with the second transmission member.

[0027] In some embodiments, the detected mechanism includes a transmission device and a detected portion, the rotating member is a part of the transmission device, and the transmission device transmits the driving force to the detected portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic diagram of the first end of a developing cartridge of the prior art.

[0030] Figure 2Schematic diagram of the second end of the developing cartridge of the prior art.

[0031] Figure 3 Schematic diagram of the principle of the positioning and rotating member in the first embodiment.

[0032] Figure 4 Side view of the developing cartridge in the second embodiment.

[0033] Figure 5 Installation schematic diagram of the detection gear in the second embodiment.

[0034] Figure 6a and 6b Schematic diagram of the structure of the bracket in the second embodiment.

[0035] Figure 7 Schematic diagram of the structure of the detection gear in the second embodiment.

[0036] Figure 8 Schematic diagram of the structure of the protective cover in the second embodiment.

[0037] Figure 9 Schematic diagram of the detection gear installed on the protective cover in the second embodiment.

[0038] Figure 10 Cross-sectional view of the developing cartridge along the A-A section in the second embodiment.

[0039] Figure 11 Exploded three-dimensional structure schematic diagram of one perspective of the developing cartridge in the third embodiment.

[0040] Figure 12 Exploded three-dimensional structure schematic diagram of another perspective of the developing cartridge in the third embodiment.

[0041] Figure 13 For Figure 11 Partial enlarged structure schematic diagram in

[0042] Figure 14 For Figure 12 Partial enlarged structure schematic diagram in

[0043] Figure 15 Schematic diagram of the principle of the positioning and rotating member in the fourth embodiment.

[0044] Figure 16 Schematic diagram of the principle of clamping the rotating member in the positioning portion in the fourth embodiment.

[0045] Figure 17a and Figure 17b Schematic diagram of the installation principle of the rotating member in the fifth embodiment.

[0046] Figure 18 Schematic diagram of the rotating member in the sixth embodiment.

[0047] Figure 19 It is the installation schematic diagram of the rotating part in the sixth embodiment.

[0048] Figure 20 It is the installation schematic diagram of the rotating part in the seventh embodiment.

[0049] Reference numerals in the figure: 1 - developing cartridge, 10 - cartridge body, 10a - first end, 10b - second end, 20 - driving member, 30 - developing element, 40 - detection gear, 402 - first cylindrical portion, 403 - first tooth portion, 404 - second tooth portion, 405 - first positioned portion, 406 - second positioned portion, 507 - first support column, 508 - second support column, 50 - rotating part, 51 - first positioning member, 52 - second positioning member, 53 - third positioning member, 54 - first support portion, 55 - second support portion, 56 - first guide rail, 57 - second guide rail, 58 - elliptical groove, 59 - positioning protrusion, 60 - cover, 601 - first transmission positioning column, 602 - abutting portion, 603 - snap portion, 604 - first clamping portion, 605 - second clamping portion, 606 - third positioning column, 607 - second opening, 70 - elastic member, 80 - second transmission gear, 90 - bracket, 902 - second surface, 901 - first surface, 906 - positioning rod column, 903 - second transmission positioning column, 904 - first opening, 905 - through hole, 11 - detected mechanism, 111 - transmission device, 1111 - rack, 1113 - second gear, 112 - detected portion, 1121 - swing rod, 121 - developing element gear, 122 - powder feeding element gear, 123 - first stirrer gear, 124 - first gear, 1241 - small tooth portion, 1242 - large tooth portion, 1243 - second cylindrical portion, 126 - second stirrer gear. Detailed implementation manners

[0050] For a better understanding of the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0051] It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0052] Embodiment 1

[0053] In this embodiment, except for special instructions, the structure of the developing cartridge is the same as that in the background technology. Specifically:

[0054] Combined with Figure 1-2 , a developing cartridge is provided, and the developing cartridge is detachably installed on an image forming apparatus.

[0055] The developing cartridge includes a cartridge body 10, a driving member 20, a developing element 30, a powder feeding element (not shown in the figure), a stirrer (not shown in the figure), and a detected mechanism 11. The cartridge body 10 accommodates a developer therein. The powder feeding element and the stirrer are rotatably provided inside the cartridge body 10, and the rotation axes of the developing element 30, the powder feeding element, and the stirrer point in the same direction. The developing cartridge has a first end 10a and a second end 10b in the axial direction of the developing element 30, and the first end 10a and the second end 10b are oppositely arranged in the length direction of the developing cartridge. At least one of the driving member 20 and the detected mechanism 11 includes a rotating member 50, and the rotating member 50 is rotatably provided on the developing cartridge. The detected mechanism 11 includes a transmission device 111 and a detected portion 112. The transmission device 111 transmits a driving force to the detected portion 112, and the detected portion 112 can contact a detection device of the image forming apparatus, so that the detected mechanism 11 is detected by the detection device of the image forming apparatus.

[0056] The driving member 20 is located at the first end 10a, and the detected mechanism 11 is located at the second end 10b. The developing cartridge further includes a rotating shaft member, a first transmission member, and a second transmission member. The rotating shaft member is rotatably provided on the developing cartridge and is arranged parallel to the length direction of the developing cartridge. The rotating shaft member extends from the first end 10a to the second end 10b. The rotating shaft member can be provided inside the cartridge body 10, such as being provided as the powder feeding element or the stirrer or a shaft arranged parallel to the stirrer, or can be provided outside the cartridge body 10, such as being provided as the developing element 30 or a shaft arranged parallel to the developing element 30. The first transmission member is installed at one end of the rotating shaft member and is located at the first end 10a, and the second transmission member is installed at the other end of the rotating shaft member and is located at the second end 10b. The first transmission member receives the driving force transmitted by the driving member 20, and the second transmission member transmits the received driving force to the detected mechanism 11.

[0057] As Figure 3 shown, the developing cartridge is provided with a positioning portion and a rotating member 50. The rotating member 50 is rotatably provided on the developing cartridge and has a circumferential outer surface 501. The positioning portion preferably has three members, including a first positioning member 51, a second positioning member 52, and a third positioning member 53. All three members contact the circumferential outer surface 501 of the rotating member 50, that is, the rotating member 50 is clamped outside by the positioning portion, thereby positioning the rotating member 50.

[0058] In an alternative embodiment of the present embodiment, the number of the positioning portions may be one or more, and the shapes of the plurality of positioning portions may be the same or different. The shape of the positioning portion may be either a regular geometric shape or an irregular shape, and is not limited herein. The positioning portion is preferably a gear, a friction wheel, or a positioning protrusion 59. The plurality of positioning portions may all be provided as gears, friction wheels, or positioning protrusions 59, or the plurality of positioning portions may be formed by at least two combinations of gears, friction wheels, and positioning protrusions 59. The positioning protrusion 59 extends in the rotation axis direction of the rotating member 50. The positioning protrusion 59 is preferably an arc-shaped column, a cylindrical column, a triangular column, a square column, a "T"-shaped column, an "L"-shaped column, or an "X"-shaped column. The positioning protrusion 59 may also be a column having a cross-section of other shapes, which is not limited herein. The rotating member 50 is rotatably provided on the developing cartridge. When the rotating member 50 is part of the driving member 20, the rotating member 50 is a gear. When the rotating member 50 is part of the detected mechanism 11, the rotating member 50 may be provided as a gear, a friction wheel, a cam, a grooved wheel, a disc, a lever, a pin wheel, etc., which is not limited herein. The positioning portion may be directly provided on the cartridge body 10, or may be indirectly provided on the cartridge body 10 (for example, the positioning portion is provided on a bracket, and the bracket is mounted on the cartridge body 10). The positioning portion may also be provided on the cover 60, which is not limited herein. The rotating member 50 may be provided on the cartridge body 10, the bracket, or the cover in a manner matching the positioning portion, which is not limited herein.

[0059] When the positioning portion is provided as a gear or a friction wheel, the positioning portion may be sleeved on a positioning rod column 906 extending from the cartridge body 10. The contact between the positioning portion and the rotating member 50 may be tooth engagement contact or frictional contact of an elastic layer. The rotating member 50 may rotate by receiving the driving force of any gear or friction wheel. The gear or friction wheel may be sleeved on the positioning rod column 906 extending from the cartridge body 10, or may be sleeved on the shaft end of a rotating shaft member extending from within the cartridge body 10. Other gears or friction wheels receive the driving force of the rotating member 50 and rotate passively. Specifically, teeth or an elastic layer may be provided on the circumferential outer surface 501 of the rotating member 50. Correspondingly, teeth or an elastic layer are provided on the positioning portion.

[0060] To position the rotating member 50 in the rotation axis direction of the rotating member 50, the rotating member 50 may be abutted in the rotation axis direction of the rotating member 50, or an annular groove may be provided on the circumferential outer surface 501 or the circumferential inner surface 502 of the rotating member 50. A clamping portion is provided on the positioning portion, and the positioning portion is clamped in the annular groove. The clamping portion may move along the annular groove.

[0061] Further, when the rotating member is part of the mechanism 11 to be detected, the rotating member 50 may also have a protrusion that directly or indirectly toggles the detection device of the image forming device, enabling the developing cartridge to be detected by the image forming device. For example, the rotating member 50 can serve as the detection gear 40. The position of the detection gear 40 to be detected in the developing cartridge is determined by the position of the detection device in the image forming device. Therefore, the position change of the detection gear 40 in the developing cartridge is limited. Clamping and positioning the detection gear 40 outside the positioning portion can accommodate diverse developing cartridges.

[0062] In the above embodiments, the mechanism 11 to be detected and the driving member 20 are respectively located at the second end 10b and the first end 10a of the developing cartridge. When the mechanism 11 to be detected and the driving member 20 are located at the same end of the developing cartridge, the positioning scheme of the rotating member 50 in the above embodiments can also be applied.

[0063] Embodiment 2

[0064] In Embodiment 2 of the present invention, except as otherwise specified, the structure of the developing cartridge is the same as that in Embodiment 1. Specifically:

[0065] The developing cartridge includes a cartridge body 10, a developing element 30, a powder feeding element (not shown in the figure), a stirrer (not shown in the figure), a driving member 20, a mechanism 11 to be detected, and an electrode. The cartridge body 10 can accommodate the developer. The powder feeding element and the stirrer are rotatably disposed inside the cartridge body 10 and are supported by the two side walls of the cartridge body 10. The rotation axes of the developing element 30, the powder feeding element, and the stirrer point in the same direction. The cartridge body 10 is provided with a first end 10a and a second end 10b along the axial direction of the developing element 30. The first end 10a and the second end 10b are oppositely disposed in the length direction of the developing cartridge. The driving member 20 is located at the first end 10a, and the detection gear 40 is located at the second end 10b. The stirrer can rotate to stir the developer to prevent the developer from caking. The detection gear 40 has at least one protrusion. Under the action of the driving force, the detection gear 40 rotates to drive the protrusion to directly or indirectly toggle the image forming device, enabling the developing cartridge to be detected by the image forming device. The electrode is located at the second end 10b and is used to apply the voltage of the image forming device to the developing element 30 and the powder feeding element.

[0066] As Figure 4-5 shown, the developing cartridge further includes a cover 60, a bracket 90, a positioning portion, and a rotating member 50. The rotating member 50 is set as the detection gear 40, and the positioning portion is set as three positioning gears, namely a first positioning member 51, a second positioning member 52, and a third positioning member 53.

[0067] In this embodiment, the cover 60 covers the detection gear 40 and the second transmission gear 80. The positioning portion can also be provided on the cover 60, which is not limited herein. The rotating member 50 can be disposed on the cartridge body 10, or the bracket, or the cover in a matching manner with the positioning portion, which is not limited herein.

[0068] The protective cover 60, the bracket 90, the first positioning member 51, the second positioning member 52, and the third positioning member 53 are all provided at the second end 10b of the cartridge 10. A transmission gear is provided at each end of the agitator, namely the first transmission gear and the second transmission gear 80. The first transmission gear meshes with the driving member 20, and the second transmission gear 80 meshes with the detection gear 40. Thus, the driving force received by the driving member 20 is transmitted from the first end 10a to the detection gear 40 at the second end 10b through the rotation of the agitator, and the detection gear 40 is driven by the second transmission gear 80 to rotate. The first positioning member 51, the second positioning member 52, and the third positioning member 53 are all gears, and all three are externally meshed with the detection gear 40, thereby externally clamping the detection gear 40, so as to position the detection gear 40 in the radial direction. The first positioning member 51, the second positioning member 52, and the third positioning member 53 receive the driving force of the detection gear 40 and rotate.

[0069] The elastic member 70 is used to mount the detection gear 40, and the bracket 90 is used to support the second transmission gear 80, the first positioning member 51, the second positioning member 52, and the third positioning member 53.

[0070] As Figure 6a and Figure 6b shown, the bracket 90 includes a second surface 902 facing the cartridge 10 and a first surface 901 facing away from the cartridge 10; three positioning rod columns 906 are provided on the second surface 902; a second transmission positioning column 903 is provided on the first surface 901. The bracket 90 is further provided with a first opening 904 and a through hole 905 allowing the detection gear 40 to pass through. The first opening 904 acts with the third positioning column 606 on the protective cover 60 to position the bracket 90.

[0071] As Figure 7 shown, the detection gear 40 includes a protrusion 401, a first cylindrical portion 402, a first tooth portion 403, a second tooth portion 404, a first positioned portion 405, and a second positioned portion 406. The first cylindrical portion 402, the first tooth portion 403, the second tooth portion 404, the first positioned portion 405, and the second positioned portion 406 are coaxially and integrally provided. The number of protrusions 401 is four, and the arc lengths of the protrusions 401 in the rotation direction of the detection gear 40 are different. After the detection gear 40 receives the driving force and rotates, it drives the protrusion 401 to rotate and is detected by the image forming device to transmit the information of the developing cartridge to the image forming device. The first tooth portion 403 is a toothless gear, the second tooth portion 404 has denser teeth than the first tooth portion 403, the diameter of the second tooth portion 404 is smaller than the diameter of the first tooth portion 403, and the first tooth portion 403 and the second tooth portion 404 are successively meshed with the second transmission gear 80, so that the detection gear 40 rotates at different speeds. In this embodiment, the first positioned portion 405 is a full-tooth gear, with a diameter smaller than that of the second tooth portion 404, and the teeth are located on the circumferential outer surface of the first positioned portion 405.

[0072] As shown Figure 8 - Figure 10 in the figure, the protective cover 60 includes a first transmission positioning post 601, an abutting portion 602, a buckle portion 603, a first clamping portion 604, a second clamping portion 605, a third positioning post 606, and a second opening 607. The second transmission gear 80 is sleeved on the second transmission positioning post 903 and the first transmission positioning post 601. The hollow hole of the second transmission positioning post 903 is clamped with the buckle portion 603 to axially position the second transmission gear 80. The first clamping portion 604 and the second clamping portion 605 clamp the second positioned portion 406 of the detection gear 40, and the abutting portion 602 abuts against the second positioned portion 406. The first cylindrical portion 402 of the detection gear 40 passes through the through hole 905 of the bracket 90, and there is a significant gap between the first cylindrical portion 402 and the inner wall of the through hole 905.

[0073] The first positioning member 51, the second positioning member 52, and the third positioning member 53 are respectively sleeved on the positioning rod post 906. The first positioning member 51, the second positioning member 52, and the third positioning member 53 are all meshed with the teeth on the outer circumference of the first positioned portion 405, and the three externally clamp the first positioned portion 405 of the detection gear 40. In this embodiment, the first positioning member 51, the second positioning member 52, and the third positioning member 53 are all gears, and the first positioned portion 405 is also a gear. Of course, in this embodiment, the first positioning member 51, the second positioning member 52, and the third positioning member 53 can also be rotating members 50 without teeth (such as friction wheels and pinion wheels). Correspondingly, the first positioned portion 405 can also be a rotating member 50 without teeth; in this embodiment, the first positioning member 51, the second positioning member 52, and the third positioning member 53 can also be immovable components, such as positioning protrusions 59 protruding from the second side wall 10b or the bracket 90, and the positioning protrusions 59 externally clamp the first positioned portion 405.

[0074] The detected mechanism 11 includes a transmission device 111 and a detected portion 112. The transmission device 111 transmits the driving force to the detected portion 112, and the detected portion 112 can contact the detection device of the image forming device, so that the detected mechanism 11 is detected by the detection device of the image forming device. In this embodiment, the transmission device 111 is provided as the first tooth portion 403 and the second tooth portion 404 of the detection gear 40, the detected portion 112 is provided as the protrusion 401, the rotating member 50 is provided as the detection gear 40, and the transmission device 111 and the detected portion 112 are integrally provided. The rotating member 50 is part of the detected mechanism 11 and has a protrusion 401. The protrusion 401 directly or indirectly toggles the detection device, so that the developing cartridge is detected by the image forming device.

[0075] The detected position of the detection gear 40 in the developing cartridge is determined by the position of the detection device in the image forming apparatus. Therefore, the position change of the detection gear 40 in the developing cartridge is limited. Thus, when the rotation axis for supporting the detection gear 40 cannot be set at the position of the detection gear 40 in the developing cartridge, the first positioning member 51, the second positioning member 52, and the third positioning member 53 clamp and position the detection gear 40 to adapt to various developing cartridges. In the above embodiment, the rotating shaft member is set as the agitator. When the rotating shaft member is set as the developing element 30, the powder feeding element, or the shaft parallel to the developing element 30, the positioning scheme for the rotating member 50 in the above embodiment can also be applied.

[0076] In the above embodiment, the detected mechanism 11 and the driving member 20 are respectively located at the second end 10b and the first end 10a of the developing cartridge. When the detected mechanism 11 and the driving member 20 are located at the same end of the developing cartridge, the positioning scheme for the rotating member 50 in the above embodiment can also be applied.

[0077] Embodiment III

[0078] In the third embodiment, the positioning portion of the developing cartridge is set as the positioning protrusion 59. The positioning protrusion 59 contacts the circumferential outer surface of the rotating member 50, thereby externally clamping the rotating member 50. And the detected mechanism 11 does not include the detection gear 40, and the detected portion 112 is set as the swing rod 1121.

[0079] As Figure 11 - 14 shown, the developing cartridge has a cartridge body 10, a positioning portion, a rotating member 50, a driving member 20, a detected mechanism 11, and a rotating shaft member. The inside of the cartridge body 10 accommodates the developer. The developing cartridge includes a first end 10a and a second end 10b that are oppositely arranged in its length direction. The positioning portion is set as three positioning protrusions 59 located at the second end 10b of the developing cartridge. The rotating member 50 is specifically set as the first gear 124. The detected mechanism 11 includes a transmission device 111 and a detected portion 112. The rotating member 50 is part of the transmission device 111, and the transmission device 111 transmits the driving force to the detected portion 112. The transmission device 111 includes a rack 1111, a first gear 124, and a second gear 1113 provided at the second end 10b. The detected portion 112 is set as the swing rod 1121. The rotating shaft member is rotatably provided on the developing cartridge and is arranged parallel to the length direction of the developing cartridge. The rotating shaft member extends from the first end 10a to the second end 10b. The rotating shaft member can be provided inside the cartridge body 10, such as being set as a powder feeding element, an agitator, or a shaft parallel to the agitator, or can also be provided outside the cartridge body 10, such as being set as the developing element 30 or a shaft parallel to the developing element 30. The developing element 30 and the powder feeding element are used to carry and transport the developer. The first end 10a of the developing cartridge is also provided with a developing element gear 121, a powder feeding element gear 122, and a first agitator gear 123, and the tooth portions of all three are helical teeth.

[0080] The developing cartridge further includes a first transmission member and a second transmission member. The first transmission member is mounted at one end of the rotating shaft member and is located at the first end 10a, and the second transmission member is mounted at the other end of the rotating shaft member and is located at the second end 10b. The first transmission member receives the driving force transmitted by the driving member 20, and the second transmission member transmits the received driving force to the mechanism 11 to be detected. The first transmission member is specifically set as the first agitator gear 123, and the second transmission member is specifically set as the second agitator gear 126. The first agitator gear 123 is located at one end of the agitator and is located at the first end 10a, and the second agitator gear 126 is mounted at the other end of the agitator and is located at the second end 10b; the rotating member 50 is part of the mechanism 11 to be detected, and the rotating member 50 is meshed and connected with the second transmission member.

[0081] The driving member 20 is meshed with the developing element gear 121, the powder feeding element gear 122 and the first agitator gear 123. The developing element gear 121 is connected to the developing element 30, the powder feeding element gear 122 is connected to the powder feeding element, and the first agitator gear 123 is connected to the agitator. The agitator is located inside the developing cartridge and is used to rotate and stir the developer to prevent the developer from caking. The driving member 20 drives the first agitator gear 123 to rotate, the first agitator gear 123 drives the agitator to rotate together, the second agitator gear 126 rotates together with the agitator, and the agitator transmits the power from the first end 10a of the developing cartridge to the second end 10b. The first gear 124 includes a large tooth portion 1242 and a small tooth portion 1241 that are coaxially and integrally arranged. The diameter of the large tooth portion 1242 is larger than that of the small tooth portion 1241, and the large tooth portion 1242 is closer to the cartridge body 10 than the small tooth portion 1241. The second agitator gear 126 is meshed with the large tooth portion 1242 of the first gear 124, and the small tooth portion 1241 of the first gear 124 is meshed with the second gear 1113. The second gear 1113 is meshed with the rack 1111. The second gear 1113 drives the rack 1111 to translate, and the rack 1111 toggles the swing rod 1121. The swing rod 1121 contacts and separates from the detection device of the image forming apparatus, so that the portion 112 to be detected is detected by the detection device.

[0082] As Figure 13 - 14 shown, specifically, the first gear 124 is rotatably supported on the cartridge body 10; the first gear 124 is located on the outer surface of the side wall of the second end 10b of the cartridge body 10 and includes a second cylindrical portion 1243, a large tooth portion 1242 and a small tooth portion 1241. The second cylindrical portion 1243 is a hollow cylindrical structure and is located in the middle of the large tooth portion 1242. In the rotational axial direction of the developing element 30, the second cylindrical portion 1243 is closer to the cartridge body 10 than the large tooth portion 1242.

[0083] The positioning protrusions 59 are located on the cartridge body 10. There are three positioning protrusions 59, which are columnar structures with an arc-shaped cross-section and protrude in a direction away from the outer surface of the cartridge body 10. The three positioning protrusions 59 are respectively in contact with the circumferential outer surface of the second cylindrical portion 1243, clamping the second cylindrical portion 1243, thereby positioning the first gear 124.

[0084] In an alternative solution of this embodiment, protrusions surrounding the circumferential outer surface of the large tooth portion 1242 may also be provided on the cartridge body 10, thereby positioning the first gear 124. The number of the positioning protrusions 59 may be one or more, and no limitation is made here. In this embodiment, the rotating shaft member is set as a stirrer. When the rotating shaft member is set as the developing element 30 or the powder feeding element or the shaft parallel to the developing element 30, the positioning solution of the rotating member 50 in the above embodiment can also be applied. In this embodiment, the first gear 124 is taken as an example to illustrate the installation method of the gear, which does not mean that only the first gear 124 is installed through this kind of positioning protrusion 59 structure; for example, the driving member 20 and the second gear 1113 may not be provided with a rotating shaft and can be installed by being clamped by the positioning protrusion 59. Those skilled in the art should understand that any other gear can be installed in this way, and no limitation is made here.

[0085] Embodiment Four

[0086] In Embodiment Four of the present invention, except for special instructions, the other structures of the developing cartridge are the same as those in Embodiment One. Specifically:

[0087] As Figure 15 shown, in this embodiment, the developing cartridge has a positioning portion and a rotating member 50. There are multiple positioning portions. One part of the positioning portion clamps the rotating member 50 externally, and the other part of the positioning portion clamps the rotating member 50 internally.

[0088] Specifically, the rotating member 50 has a circumferential outer surface 501 and a circumferential inner surface 502. The positioning portion includes a first positioning member 51, a second positioning member 52, and a third positioning member 53. The first positioning member 51 is in contact with the circumferential inner surface 502 of the rotating member 50, and both the second positioning member 52 and the third positioning member 53 are in contact with the circumferential outer surface 501 of the rotating member 50.

[0089] When the rotating member 50 is part of the driving member 20, the rotating member 50 is a gear; when the rotating member 50 is part of the mechanism to be detected 11, the rotating member 50 can be set as a gear, a friction wheel, a cam, a grooved wheel, a disc, a lever, or a pin wheel.

[0090] There are multiple positioning parts, and the shapes of the multiple positioning parts are the same or different; all of the multiple positioning parts can be set as gears or friction wheels or positioning protrusions 59, or the multiple positioning parts can also be formed by at least two combinations of gears, friction wheels, and positioning protrusions 59. The positioning protrusion 59 is set as an arc-shaped column, a cylindrical column, a triangular column, a square column, a "T"-shaped column, an "L"-shaped column, or an "X"-shaped column. The positioning protrusion 59 can also adopt a column body with other cross-sectional shapes, which is not limited here.

[0091] When the positioning part is set as a gear or a friction wheel, the positioning part can be sleeved on the positioning rod column 906 extending from the box body 10. The contact between the positioning part and the rotating part 50 can be tooth engagement contact or frictional contact of an elastic layer. The rotating part 50 can rotate by receiving the driving force of any gear or friction wheel. The gear or friction wheel can be sleeved on the positioning rod column 906 extending from the box body 10, or can be sleeved on the shaft end where the rotating shaft part located inside the box body 10 extends. Other gears or friction wheels receive the driving force of the rotating part 50 and rotate passively. Specifically, teeth or an elastic layer can be respectively arranged on the circumferential outer surface 501 and the circumferential inner surface 502 of the rotating part 50. Correspondingly, teeth or an elastic layer are arranged on the positioning part.

[0092] In this embodiment, any one of the second positioning member 52 and the third positioning member 53 can contact the circumferential inner surface 502 of the rotating part 50, or all of them can contact the circumferential inner surface 502 of the rotating part 50.

[0093] As Figure 16 shown, the rotating part 50 has a circumferential inner surface 502. The positioning part includes a first positioning member 51, a second positioning member 52, and a third positioning member 53. The first positioning member 51, the second positioning member 52, and the third positioning member 53 all contact the circumferential inner surface 502, and then clamp the rotating part 50 from the inside. Specifically, a hollow cylindrical part can be arranged on the rotating part 50. The center of the cylindrical part has a circumferential inner surface 502. The first positioning member 51, the second positioning member 52, and the third positioning member 53 all abut against the circumferential inner surface 502, that is, the positioning part clamps the circumferential inner surface 502 of the rotating part 50.

[0094] To position the rotating part 50 in the rotation axis direction of the rotating part 50, the rotating part 50 can be abutted in the rotation axis direction of the rotating part 50, or an annular groove can be arranged on the circumferential outer surface 501 or the circumferential inner surface 502 of the rotating part 50. A clamping part is arranged on the positioning part, and the positioning part is clamped in the annular groove, and the clamping part can move along the annular groove.

[0095] In an alternative embodiment of the present embodiment, the number of positioning portions may be one or more. The positioning portion may be directly provided on the cartridge 10, or indirectly provided on the cartridge 10. The positioning portion may also be provided on the cover 60, which is not limited herein. The rotating member 50 may be provided on the cartridge 10 or the cover 60 in a manner matching the positioning portion, which is not limited herein. Further, the rotating member 50 may also have a protrusion, and the protrusion directly or indirectly toggles the detection device of the image forming device, so that the developing cartridge is detected by the image forming device.

[0096] In the above embodiment, the detected mechanism 11 and the driving member 20 are respectively located at the second end 10b and the first end 10a of the developing cartridge. When the detected mechanism 11 and the driving member 20 are located at the same end of the developing cartridge, the positioning scheme of the rotating member 50 in the above embodiment can also be applied.

[0097] Embodiment Five

[0098] In Embodiment Five of the present invention, except for special instructions, the other structures of the developing cartridge are the same as those in Embodiment One. Specifically:

[0099] Such as Figure 17a And Figure 17b FIGS. and are the installation schematic diagrams of the rotating member 50 in Embodiment Five. In this embodiment, the developing cartridge is provided with a positioning portion and a rotating member 50. The rotating member 50 has a circumferential outer surface 501, and the circumferential outer surface 501 has a tooth portion and a cylindrical portion. The positioning portion has two, namely a first support portion 54 and a second support portion 55. The first support portion 54 and the second support portion 55 are provided as columns with a circular arc-shaped cross section. The arc surfaces of the first support portion 54 and the second support portion 55 are in contact with the circumferential outer surface 501 of the rotating member 50, and may be in contact with the tooth portion or the cylindrical portion of the circumferential outer surface 501, so as to position the rotating member 50 in the radial direction of the rotating member 50. In this embodiment, the arc lengths of the cross sections of the first support portion 54 and the second support portion 55 can be further reduced, as long as the rotating member 50 can be positioned in the radial direction; the number of positioning portions can also be set to more than two.

[0100] Embodiment Six

[0101] In Embodiment Six of the present invention, except for special instructions, the other structures of the developing cartridge are the same as those in Embodiment One. Specifically:

[0102] The positioning portion may be set as a plurality of concentrically distributed annular grooves, and the rotating member 50 has a plurality of struts, and the plurality of struts are respectively inserted into the plurality of annular grooves, so as to position the rotating member 50.

[0103] Such as Figure 18 And Figure 19As shown, the positioning portion is provided with two concentrically distributed annular grooves, namely the first guide rail 56 and the second guide rail 57; the rotating member 50 is provided with a first pillar 507 and a second pillar 508, the first guide rail 56 and the second guide rail 57 are concentrically distributed annular grooves, and the diameter of the first guide rail 56 is greater than the diameter of the second guide rail 57. The first pillar 507 is inserted into the first guide rail 56, and the second pillar 508 is inserted into the second guide rail 57. The first pillar 507 moves along the first guide rail 56, and the second pillar 508 moves along the second guide rail 57. The movement tracks of the first pillar 507 and the second pillar 508 are two concentric circles with different diameters. The extension directions of the first pillar 507 and the second pillar 508 of the rotating member 50 are both parallel to the rotation axis of the rotating member 50, and the distances from the first pillar 507 and the second pillar 508 to the rotation axis of the rotating member 50 are different. The first pillar 507 is farther away from the rotation axis of the rotating member 50 than the second pillar 508.

[0104] That is, the movement tracks of the first support 507 and the second support 508 do not overlap, that is, the first support 507 and the second support 508 are not on the same circle with the rotation axis of the rotating member 50 as the center. Further, the rotating member 50 may also have a protrusion, which directly or indirectly moves the detection device of the image forming device so that the developing cartridge is detected by the image forming device.

[0105] In the optional solution of this embodiment, the first pillar 507 and the second pillar 508 may also be other shapes such as arc pillars or triangular pillars, which are not specifically limited here. The number of the annular grooves may be one or more, and the number of the corresponding pillars may be one or more, which are not specifically limited here. The positioning portion is directly or indirectly arranged on the box body 10 or the protective cover 60, and the positioning portion may be arranged at the first end 10a of the developing box, or at the second end 10b.

[0106] Embodiment 7

[0107] The structure of the developing box in the seventh embodiment is the same as that in the first embodiment except for special instructions. Specifically:

[0108] The positioning portion may be configured as a circular or elliptical groove or through hole, and the rotating member 50 has a cylindrical portion, which is inserted into the groove or through hole, so as to position the rotating member 50 .

[0109] like Figure 20 As shown, the developing box is provided with a positioning portion and a rotating member 50, the positioning portion is set as an elliptical groove 58, and the rotating member 50 has a cylindrical portion, and the cylindrical portion has a circumferential outer surface 501. The rotating member 50 is inserted into the elliptical groove 58, and the elliptical groove 58 contacts the circumferential outer surface 501 of the cylindrical portion, thereby positioning the rotating member 50. The rotation axis of the rotating member 50 overlaps with the center of the elliptical groove 58, and the diameter of the circumferential outer surface 501 is the same as the minor diameter of the elliptical groove 58.

[0110] In an alternative embodiment of the present embodiment, the positioning portion may also be provided as a circular groove, a circular through-hole or an elliptical through-hole, and the positioning portion contacts the circumferential outer surface 501 of the cylindrical portion, thereby positioning the rotating member 50. Further, the shape of the groove or the through-hole may also be other shapes such as square, triangular, etc., which are not limited herein.

[0111] The different installation methods of the rotating member 50 in all the above embodiments are described, which does not mean that only the rotating member 50 in the embodiments is installed through the structures described correspondingly; those skilled in the art should understand that any other component rotatably provided on the developing cartridge can be installed through the correspondingly described method, which is not limited herein. For example, the rotating member 50 may also be a cam, a grooved pulley, a disc, a lever or a pin wheel, etc.

[0112] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A developing cartridge detachably installed in an image forming apparatus, the developing cartridge having a first end and a second end oppositely disposed in its longitudinal direction, characterized in that, comprising: a cartridge body for accommodating a developer therein; a developing member, with the first end and the second end disposed in the axial direction of the developing member; a driving member located at the first end of the cartridge body, the driving member receiving a driving force from the image forming apparatus; a detected mechanism located at the second end of the cartridge body, the detected mechanism being detected by a detecting device of the image forming apparatus, at least one of the driving member and the detected mechanism containing a rotating member rotatably provided on the developing cartridge; a positioning portion for clamping and positioning the rotating member, there being a plurality of the positioning portions, and the shapes of the plurality of positioning portions being the same or different.

2. The developing cartridge according to claim 1, characterized in that, when the rotating member is part of the driving member, the rotating member is a gear; when the rotating member is part of the detected mechanism, the rotating member is provided as a gear or a friction wheel or a cam or a sprocket or a disc or a lever or a pin wheel.

3. The developing cartridge according to claim 1, characterized in that, all of the plurality of positioning portions are provided as gears or friction wheels or positioning protrusions, or the plurality of positioning portions are formed by at least two combinations of a gear, a friction wheel, and a positioning protrusion.

4. The developing cartridge according to claim 3, characterized in that, the rotating member has a circumferential outer surface, and all of the plurality of positioning portions are in contact with the circumferential outer surface.

5. The developing cartridge according to claim 3, characterized in that, the rotating member has a circumferential inner surface, and all of the plurality of positioning portions are in contact with the circumferential inner surface.

6. The developing cartridge according to claim 3, characterized in that, the rotating member has a circumferential outer surface and a circumferential inner surface, and among the plurality of positioning portions, some positioning portions are in contact with the circumferential outer surface and some other positioning portions are in contact with the circumferential inner surface.

7. The developing cartridge according to claim 3, characterized in that, the positioning protrusion is provided as an arc-shaped column or a cylindrical column or a triangular column or a square column or a "T"-shaped column or an "L"-shaped column or an "X"-shaped column.

8. The developing cartridge according to claim 1, characterized in that, the positioning portion is provided as a circular or oval-shaped groove or through hole, the rotating member has a cylindrical portion, and the cylindrical portion is inserted into the groove or through hole to position the rotating member.

9. The developing cartridge according to claim 1, characterized in that, the positioning portion is provided as a plurality of concentrically distributed annular grooves, the rotating member has a plurality of struts, and the plurality of struts are respectively inserted into the plurality of annular grooves to position the rotating member.

10. The developing cartridge according to any one of claims 1-9, characterized in that, the positioning portion is directly or indirectly provided on the cartridge body.

11. The developing cartridge according to any one of claims 1-9, characterized in that, it further includes a protective cover covering at least a part of the rotating member, and the positioning portion is provided on the protective cover.

12. The developing cartridge according to any one of claims 1-9, characterized in that, It further includes a rotating shaft member, a first transmission member, and a second transmission member. The first transmission member is installed at one end of the rotating shaft member and is located at the first end, and the second transmission member is installed at the other end of the rotating shaft member and is located at the second end. The first transmission member receives the driving force transmitted by the driving member, and the second transmission member transmits the received driving force to the mechanism to be detected.

13. The developing cartridge according to claim 12, wherein, the rotating member is part of the mechanism to be detected and has a protrusion, and the protrusion directly or indirectly toggles the detection device so that the developing cartridge is detected by the image forming apparatus.

14. The developing cartridge according to claim 12, wherein, the rotating member is part of the mechanism to be detected, and the rotating member meshes with the second transmission member.

15. The developing cartridge according to claim 14, wherein, the mechanism to be detected includes a transmission device and a portion to be detected, the rotating member is part of the transmission device, and the transmission device transmits the driving force to the portion to be detected.

Images