Developing box

Abstract

A developing cartridge includes: a cartridge body for accommodating a developer; a developing roller that rotates about an axis extending in a first direction; the power receiving part is used for receiving the driving force from the image forming device and is positioned at the first end; the electrode is electrically connected with the developing roller and located at the second end; the storage medium stores information of the developing box; the electric contact surface is electrically connected with the storage medium; the developing box can be matched with the image forming device, so that the electric contact surface and the developing box are lifted upwards together relative to the image forming device, and the electric contact surface is electrically connected with the electric terminal. According to the utility model, the developing box is matched with the image forming device, so that the electric contact surface and the developing box are lifted up together relative to the image forming device, the electric contact surface is electrically connected with the electric terminal, and the mounting of the developing box can be realized only by arranging one bracket which is fixed relative to the developing box; and the manufacturing cost of the developing box is reduced.

Description

Technical Field

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

[0002] An image forming apparatus is usually provided with electrical terminals for reading information stored in a reading chip (storage medium) to identify information of a developing cartridge. To ensure stable contact between the electrical terminals and the electrical contact surface of the chip, the electrical terminals are usually arranged in a recess in the image forming apparatus, so that after the chip enters the recess, it is limited by the side wall of the recess, thereby ensuring stability during the process of the electrical contact surface of the chip contacting the electrical terminals and avoiding poor contact. However, in order to adapt to such an image forming apparatus, the chip on the developing cartridge needs to be able to move relative to the cartridge body. Otherwise, the chip cannot enter the recess where the electrical terminals are located, or it is easy to collide and interfere with the protrusions in the image forming apparatus, resulting in chip damage. Allowing the chip to move relative to the cartridge body requires multiple parts to be provided on the developing cartridge, which leads to problems such as increased cost of the developing cartridge, increased parts, and complex assembly. Summary of the Invention

[0003] According to one aspect of the present utility model, there is provided a developing cartridge that can form a processing cartridge with a drum assembly and be detachably installed in an image forming apparatus along an installation direction. The image forming apparatus is provided with electrical terminals and a blocking structure. The developing cartridge is characterized in that it includes:

[0004] A cartridge body for accommodating a developer, having a first end and a second end in a first direction, a third end and a fourth end in a second direction, and a fifth end and a sixth end in a third direction;

[0005] A developing roller that rotates around an axis extending in the first direction;

[0006] A power receiving portion for receiving a driving force from the image forming apparatus, located at the first end;

[0007] An electrode electrically connected to the developing roller, located at the second end;

[0008] A storage medium storing information of the developing cartridge; and

[0009] An electrical contact surface electrically connected to the storage medium;

[0010] The developing cartridge can cooperate with the image forming apparatus to lift the electrical contact surface relative to the image forming apparatus together with the developing cartridge, so that the electrical contact surface forms an electrical connection with the electrical terminals.

[0011] The utility model arranges a developing box to cooperate with an image forming device so that the electrical contact surface is lifted upward together with the developing box relative to the image forming device, so that the electrical contact surface forms an electrical connection with the electrical terminal. There is no need to provide a movable bracket on the developing box to enable the electrical contact surface to move relative to the developing box and then contact the electrical terminal, so that the installation of the developing box can be achieved, thereby reducing the manufacturing cost of the developing box.

[0012] In some embodiments, the developing box also includes a lifting structure. When the developing box moves along the installation direction over the blocking structure until the electrical contact surface is located below the electrical terminal, the lifting structure receives the force from the image forming device to drive the developing box to be lifted in a third direction relative to the image forming device.

[0013] In some embodiments, the lifting structure is located at the fourth end, the image forming device includes a door cover, and when the developing box is installed in the image forming device, the lifting structure cooperates with the door cover to lift the developing box in the third direction.

[0014] In some embodiments, the lifting structure includes a contact portion, and the door cover includes a lifting portion. When the door cover is fully closed, the line between the contact point between the lifting portion and the contact portion and the rotation axis of the power receiving portion is defined as L1, the normal line between the rotation axis of the power receiving portion and the door cover is L2, and the angle between L1 and L2 is a first angle A1, and the value range of A1 is 12°~16.5°.

[0015] In some embodiments, when the door cover is completely closed, the distance between the contact point between the lifting portion and the contact portion and the projection of the rotation axis of the power receiving portion in the first direction ranges from 110 mm to 118 mm.

[0016] In some embodiments, the lifting structure includes an elastic member and a support member, one end of the elastic member is connected to the support member, and the other end is connected to the box body, and the support member is used to cooperate with the image forming device to lift the developing box in a third direction relative to the image forming device.

[0017] In some embodiments, the image forming device has a track, the track has a lower track and an upper track, the electric terminal and the blocking structure are located on the upper track, and the blocking structure is located behind the electric terminal in the second direction;

[0018] When the developing cartridge is installed on the image forming device along the track, the supporting member contacts the lower track, the blocking structure interferes with the electrical contact surface, and the developing cartridge is forced to move downward, and the elastic member is compressed;

[0019] When the electrical contact surface passes over the blocking structure and is located below the electrical terminal in the third direction, the elastic member releases the elastic force to lift the developing box upward, and the electrical contact surface forms an electrical connection with the electrical terminal.

[0020] In some embodiments, the length of the elastic member in the third direction when the electrical contact surface interferes with the blocking structure is defined as C1, and the length of the elastic member in the third direction when the electrical contact surface crosses the blocking structure and is electrically connected to the electrical terminal is defined as C2. The value range of the difference between C2 and C1 is 2.1 mm to 4.1 mm.

[0021] In some embodiments, in the first direction, the distance between the electrical contact surface and the first end is greater than the distance between the support member and the first end;

[0022] The value range of the difference between the distances from the electrical contact surface and the support member to the first end is 6 mm to 12 mm.

[0023] In some embodiments, the value range of the distance between the electrical contact surface and the projection of the rotation axis of the power receiving portion in the first direction is 51 mm to 58 mm;

[0024] The value range of the distance between the support member and the projection of the rotation axis of the power receiving portion in the first direction is 42 mm to 68 mm.

[0025] In some embodiments, the developing cartridge further includes a first cartridge pusher and a second cartridge pusher. In the first direction, the first cartridge pusher is closer to the first end than the second cartridge pusher, and in the third direction, the size of the first cartridge pusher is smaller than that of the second cartridge pusher;

[0026] The value range of the difference in size between the first cartridge pusher and the second cartridge pusher in the third direction is 2 mm to 4.5 mm.

[0027] In some embodiments, the image forming apparatus further includes a door and a link linked to the door. When the door is closed, the link acts on the support member, forcing the support member to drive the developing cartridge to lift upward.

[0028] In some embodiments, the developing cartridge further includes a bracket, and the bracket is fixedly connected to the cartridge body;

[0029] The support member includes a first movable portion and a second movable portion. A first inclined surface is provided on the first movable portion. The link converts the acting force in the third direction into the acting force in the first direction by acting on the first inclined surface, and further moves the first movable portion in the first direction;

[0030] A second inclined surface is provided on the first movable portion or the second movable portion. The first movable portion makes the second movable portion move in the third direction through the second inclined surface, forcing the second movable portion to abut against the bracket, and further driving the developing cartridge to lift upward.

[0031] In some embodiments, the elastic member includes a first elastic member and a second elastic member. The first movable portion is movably disposed on the bracket, and both ends of the first elastic member are respectively connected to the first movable portion and the bracket;

[0032] The second movable part is movably arranged on the bracket, and two ends of the second elastic part are respectively connected to the second movable part and the bracket;

[0033] When the first movable part moves along the first direction, the first elastic part is compressed. When the second movable part moves upward, the second elastic part is compressed. The first elastic part enables the first movable part to move back and forth along the first direction. The second elastic part applies an elastic force along the third direction to the developing cartridge through the bracket, so as to lift the developing cartridge upward.

[0034] In some embodiments, the support part includes a first movable part, and a third inclined surface and a fourth inclined surface are arranged on the first movable part; the elastic part includes a first elastic part;

[0035] A blocking part is arranged on the side wall of the image forming device. When the developing cartridge is installed in the image forming device, the blocking part interferes with the third inclined surface, forcing the first movable part to move along the first direction and compressing the first elastic part;

[0036] When the electrical contact surface is located below the electrical terminal in the third direction, the first elastic part resets, and the first movable part moves along the first direction towards the reset direction of the first elastic part.

[0037] In some embodiments, when the developing cartridge is in a position where the electrical contact surface is located below the electrical terminal in the third direction, in the second direction, at least part of the projections of the first movable part and the blocking part overlap.

[0038] In some embodiments, the developing cartridge is arranged to be able to lift relative to the drum assembly in the third direction, so that the electrical contact surface forms an electrical connection with the electrical terminal;

[0039] The range of the lifting distance of the developing cartridge relative to the drum assembly in the third direction is 1 mm to 6 mm.

[0040] In some embodiments, when the developing cartridge is installed, the electrical contact surface abuts against the blocking structure and is extruded by the blocking structure. After the electrical contact surface crosses the blocking structure, it forms an electrical connection with the electrical terminal;

[0041] Taking the plane where the electrical contact surface is located as the fourth plane, and taking the plane passing through the rotation axis of the power receiving part and parallel to the fourth plane as the fifth plane, the range of the height difference between the fourth plane and the fifth plane in the third direction is 33 mm to 36 mm. Description of the Drawings

[0042] Figure 1 is a schematic structural diagram of the developing cartridge according to Embodiment 1 of the present invention;

[0043] Figure 2 is a schematic structural diagram of the drum assembly according to Embodiment 1 of the present invention;

[0044] Figure 3 It is a schematic structural diagram of the development cartridge cooperating with the drum unit according to the first embodiment of the present utility model;

[0045] Figure 4 It is a schematic structural diagram of the first end of the development cartridge according to the first embodiment of the present utility model;

[0046] Figure 5 It is a schematic structural diagram of the first end of the development cartridge without the first cover according to the first embodiment of the present utility model;

[0047] Figure 6 It is a schematic structural diagram of the second end of the development cartridge according to the first embodiment of the present utility model;

[0048] Figure 7 It is a schematic cross-sectional diagram of the second end after the development cartridge cooperates with the drum unit according to the first embodiment of the present utility model;

[0049] Figure 8 It is a schematic structural diagram of the development cartridge and the drum unit installed in the image forming apparatus according to the first embodiment of the present utility model;

[0050] Figure 9 It is a schematic structural diagram of the development cartridge and the drum unit installed in the image forming apparatus at the first position according to the first embodiment of the present utility model;

[0051] Figure 10 It is a schematic structural diagram of the development cartridge cooperating with the door cover at the second position according to the first embodiment of the present utility model;

[0052] Figure 11 It is Figure 10 an enlarged structural diagram of I in

[0053] Figure 12 It is a first cooperation schematic diagram of the contact part of the development cartridge and the door cover according to the first embodiment of the present utility model;

[0054] Figure 13 It is a second cooperation schematic diagram of the contact part of the development cartridge and the door cover according to the first embodiment of the present utility model;

[0055] Figure 14 It is a third cooperation schematic diagram of the contact part of the development cartridge and the door cover according to the first embodiment of the present utility model;

[0056] Figure 15 It is a schematic structural diagram of the development cartridge installed on the drum unit according to the second embodiment of the present utility model;

[0057] Figure 16 It is a schematic structural diagram of the drum unit according to the second embodiment of the present utility model;

[0058] Figure 17 It is an exploded structural diagram of the drum unit according to the second embodiment of the present utility model;

[0059] Figure 18 It is a schematic cross-sectional structure diagram at the first end when the developing cartridge of the second embodiment of the present utility model is installed on the drum assembly;

[0060] Figure 19 It is a schematic structure diagram of the developing cartridge of the second embodiment of the present utility model;

[0061] Figure 20 It is a schematic exploded structure diagram of the first end of the developing cartridge of the second embodiment of the present utility model;

[0062] Figure 21 It is a schematic exploded structure diagram of the identification component in the developing cartridge of the second embodiment of the present utility model;

[0063] Figure 22 It is a partial schematic structure diagram of the developing cartridge of the second embodiment of the present utility model when viewed from the back to the front along the second direction;

[0064] Figure 23 It is a partial schematic structure diagram of the side wall of the image forming apparatus of the second embodiment of the present utility model when viewed from left to right;

[0065] Figure 24 It is a three-dimensional structure diagram of the distance between the upper rail and the lower rail on the side wall of the second embodiment of the present utility model;

[0066] Figure 25 It is a partial three-dimensional structure diagram of the side wall of the image forming apparatus provided by the second embodiment of the present utility model when viewed from bottom to top;

[0067] Figure 26 It is a schematic structure diagram when the identification component of the second embodiment of the present utility model starts to cooperate with the track;

[0068] Figure 27 It is a schematic structure diagram when the identification component of the second embodiment of the present utility model is cooperating with the track;

[0069] Figure 28 It is a schematic structure diagram when the cooperation between the identification component of the second embodiment of the present utility model and the track is completed;

[0070] Figure 29 It is a partial schematic diagram of the track of the third embodiment of the present utility model;

[0071] Figure 30 It is a schematic diagram for comparing the distance between the electrical contact surface and the rotation axis of the driving part in the third embodiment of the present utility model;

[0072] Figure 31 It is a schematic structure diagram of the bracket of the third embodiment of the present utility model;

[0073] Figure 32It is a cross-sectional view before the developing cartridge of Embodiment 3 of the present utility model is engaged with the rail;

[0074] Figure 33 It is a cross-sectional view when the developing cartridge of Embodiment 3 of the present utility model is engaged with the rail;

[0075] Figure 34 It is a cross-sectional view after the developing cartridge of Embodiment 3 of the present utility model is engaged with the rail;

[0076] Figure 35 It is a schematic structural view of the first end of the developing cartridge of Embodiment 4 of the present utility model;

[0077] Figure 36 It is an exploded schematic view of the first end of the developing cartridge of Embodiment 4 of the present utility model;

[0078] Figure 37 It is a schematic view when the developing cartridge and the drum assembly of Embodiment 4 of the present utility model are installed in the image forming apparatus and the door cover is not yet closed;

[0079] Figure 38 It is a schematic view when the developing cartridge and the drum assembly of Embodiment 4 of the present utility model are installed in the image forming apparatus and the door cover is completely closed;

[0080] Figure 39 It is a schematic view of the cooperation between the connecting rod and the lifting structure of Embodiment 4 of the present utility model;

[0081] Figure 40 It is a schematic structural view of the principle of the cooperation between the connecting rod and the lifting structure of Embodiment 4 of the present utility model;

[0082] Figure 41 It is a schematic structural view of the first end of the developing cartridge of Embodiment 5 of the present utility model;

[0083] Figure 42 It is an exploded schematic view of the first end of the developing cartridge of Embodiment 5 of the present utility model;

[0084] Figure 43 It is a schematic view when the developing cartridge and the drum assembly of Embodiment 5 of the present utility model are installed in the image forming apparatus and the door cover is completely closed;

[0085] Figure 44 It is a schematic view of the cooperation between the side wall and the lifting structure of Embodiment 5 of the present utility model;

[0086] Figure 45 It is a schematic structural view of the principle of the cooperation between the connecting rod and the lifting structure of Embodiment 5 of the present utility model;

[0087] Figure 46 It is a schematic structural view of the drum assembly of Embodiment 6 of the present utility model;

[0088] Figure 47It is a sectional view of the developing cartridge and the drum unit of Embodiment 6 of the present utility model installed in an image forming apparatus with the door cover not yet closed;

[0089] Figure 48 It is a sectional view of the developing cartridge and the drum unit of Embodiment 6 of the present utility model installed in an image forming apparatus with the door cover completely closed;

[0090] Figure 49 It is a sectional view of the developing cartridge and the drum unit of Embodiment 7 of the present utility model installed in an image forming apparatus with the door cover completely closed;

[0091] Figure 50 It is a sectional view of another embodiment of Embodiment 7 of the present utility model with the door cover not yet completely closed.

[0092] Figure 51 It is a structural schematic diagram of the drum unit in Embodiment 8 of the present utility model;

[0093] Figure 52 It is an exploded view of the first protective cover in Embodiment 8 of the present utility model. Detailed implementation manners

[0094] The present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0095] 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 specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0096] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0097] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.

[0098] In the above description, the description with reference to terms such as "an embodiment", "some embodiments", "an example", "a specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0099] As Figures 1 - 6 shown, this embodiment provides a developing cartridge 1, and the developing cartridge 1 can be detachably mounted on a drum unit 2. The developing cartridge 1 and the drum unit 2 form a processing cartridge, and the processing cartridge can be mounted in an image forming apparatus along an installation direction, and the installation direction is generally the front-back direction.

[0100] As Figure 1 shown, the developing cartridge 1 has a cartridge body 10. The cartridge body 10 has a first end 11 and a second end 12 in a first direction, a third end 13 and a fourth end 14 in a second direction, and a fifth end 15 and a sixth end 16 in a third direction. The first direction, the second direction, and the third direction intersect with each other, and in this embodiment, it is preferably that the first direction, the second direction, and the third direction are perpendicular to each other. For the convenience of description, in this application, the first direction is the left-right direction, the second direction is the front-back direction, and the third direction is the up-down direction.

[0101] The developing cartridge 1 includes a developing roller 131, a stirring frame, and a powder feeding roller. The developing roller 131, the stirring frame, and the powder feeding roller are rotatably installed in the accommodating cavity between the first end 11 and the second end 12, and their rotation axes all extend in the first direction. In the second direction, the developing roller 131 is located at the third end 13. The powder feeding roller is disposed adjacent to the developing roller 131, and in the second direction, the developing roller 131 is closer to the third end 13 of the cartridge 1 than the powder feeding roller. The stirring frame is used to stir the developer in the accommodating cavity to cause friction of the developer and prevent the developer from caking. The developing cartridge 1 further includes a blade 132 that contacts the developing roller 131 and is used to control the thickness of the developer on the developing roller 131.

[0102] The fourth end 14 has a handle 141. A user can remove the developing cartridge 1 from the drum unit 2 through the handle 141, or can remove the developing cartridge 1 together with the drum unit 2 from the image forming apparatus through the handle 141. A first guiding portion 112 is further provided on the first end 11, and a second guiding portion 122 is also provided on the second end 12. The first guiding portion 112 and / or the second guiding portion 122 are used to guide the installation of the developing cartridge 1 when the developing cartridge 1 is installed in the drum unit 2. The developing cartridge further has a first cartridge pressing member 113 provided at the first end 11 and a second cartridge pressing member 123 provided at the second end 12, which are used to cooperate with the drum unit 2 to receive the pressing force applied by the drum unit 2.

[0103] As Figure 2 shown, the drum unit 2 includes a drum frame 20, a second bracket 26, a second storage medium 27, and a photosensitive drum 25. The photosensitive drum 25 is rotatably supported by the drum frame 20. The drum frame 20 includes a first wall 21 and a second wall 22 that are oppositely disposed in the first direction. The drum frame 20 has one end 24 and the other end 23 in the second direction. The photosensitive drum 25 is disposed at one end 24. At the other end 23, the drum unit 2 has a second handle 231, and a user can hold the drum unit 2 through the second handle 231. A second bracket 26 is further provided on the first wall 21. One end of the second bracket 26 in the third direction is provided with a second storage medium 27. In a state where the developing cartridge 1 is installed on the drum unit 2, the bracket 51 is closer to the developing roller 131 and / or the photosensitive drum 25 than the second bracket 26. A first guide rail 211 is further provided on the first wall 21, and a second guide rail 221 is provided on the second wall 22. The first guide rail 211 and / or the second guide rail 221 can cooperate with the first guiding portion 112 and / or the second guiding portion 122 to facilitate the installation of the developing cartridge 1 on the drum unit 2 and also play a certain supporting role.

[0104] The second storage medium 27 is provided with a second electrical contact surface 271 electrically connected to the second storage medium 27. Information of the drum unit 2 is stored in the second storage medium 27. It can contact the second electrical terminal of the image forming apparatus and transmit the information of the drum unit 2 to the image forming apparatus. Specifically, the second storage medium 27 is electrically connected to the second electrical terminal on the image forming apparatus through the second electrical contact surface 271.

[0105] The drum unit 2 is further provided with a first drum pushing member, a second drum pushing member and a locking member 222. The first drum pushing member includes a first applying member 212 and a first applying elastic member. The second drum pushing member is the same as the first drum pushing member and will not be elaborated here. The first applying member 212 is a rigid applying block. One end of the first applying member 212 is connected to the first applying elastic member. The first applying elastic member can be a compression spring or the first drum pushing member itself is an elastic applying block. When the developing cartridge 1 is installed on the drum unit 2, the first applying member 212 can apply a force on the developing cartridge 1 in the second direction towards the photosensitive drum 25. In the first direction, the first applying member 212 and the second applying member are respectively arranged near the first wall 21 and the second wall 22 of the drum unit 2. Specifically, the first applying member 212 and the second applying member respectively abut against the first cartridge pushing member 113 and the second cartridge pushing member 123, generating a forward pushing force on the developing cartridge 1 in the second direction, so that the developing roller 131 on the developing cartridge 1 can be closely attached to the photosensitive drum 25 on the drum unit 2. The locking member 222 is used to lock the developing cartridge 1. When the developing cartridge 1 is installed on the drum unit 2, the locking member 222 cooperates with the developing cartridge 1 to fix the developing cartridge 1 in the drum unit 2. When the developing cartridge is taken out of the drum unit 2, the locking member 222 cancels the cooperation with the developing cartridge 1 to release the lock. In the state where the developing cartridge 1 is installed on the drum unit 2, the first wall 21 is adjacent to the first end 11 of the developing cartridge 1, and the second wall 22 is adjacent to the second end 12 of the developing cartridge 1. In this embodiment, the locking member 222 is arranged near the second wall 22 of the drum unit 2.

[0106] As Figure 3 、 Figure 4As shown, a first cover 111 is provided at the first end 11, and the bracket 51 is fixedly arranged on the first cover 111. A storage medium 52 is provided at one end in the third direction. The storage medium 52 is provided with an electrical contact surface 53 capable of being electrically connected thereto. The storage medium 52 is detachably installed on the bracket 51. The electrical contact surface 53 can be detachably arranged on the storage medium 52 or integrally formed with the storage medium 52. The storage medium 52 is used to store information related to the developing cartridge 1, such as whether it is a new cartridge, storage amount information, consumable capacity, the number of printable sheets, etc., and transmits the information to the image forming apparatus through electrical connection between the electrical contact surface 53 and the electrical terminal. The electrical contact surface 53 can be directly located on the storage medium 52 to achieve electrical connection with the storage medium 52, or can achieve electrical connection with the storage medium 52 through an intermediate member. The electrical terminals of some image forming apparatuses are arranged at the second end, so the electrical contact surface 53 can also be arranged at the second end 12.

[0107] As Figure 4 shown, the developing cartridge 1 of this embodiment is further provided with a lifting structure. The lifting structure is used to receive the acting force from the image forming apparatus to drive the developing cartridge 1 to be lifted upward from the first position to the second position along the third direction, causing the developing cartridge 1 to displace in the third direction, so that the electrical contact surface 53 forms electrical contact with the electrical terminal of the image forming apparatus. The lifting structure of this embodiment includes a contact portion 114. Specifically, the contact portion 114 is arranged on the first cover 111 of the developing cartridge 1 and is integrally formed with the first cover 111. In the second direction, the contact portion 114 is closer to the fourth end 14 than the third end 13. In the third direction, the contact portion 114 is closer to the fifth end 15 than the sixth end 16. In other embodiments, the contact portion 114 can be detachably arranged with the first cover 111, or the contact portion 114 is integrally formed with the cartridge body 10.

[0108] As Figure 5 shown, the transmission assembly is arranged at the first end 11 and is at least partially wrapped by the first cover 111. The transmission assembly includes a driving portion rotatably installed at the first end 11. The driving portion includes a driving gear 43 and a power receiving portion 40. The driving gear 43 is closer to the first end 11 of the cartridge body 1 in the first direction than the power receiving portion 40. The power receiving portion 40 is used to receive the power output by the image forming apparatus.

[0109] The transmission assembly further includes a developing gear 41, a powder feeding gear 42, an idle gear 44, and a stirring gear 45. The developing gear 41 is coaxially and fixedly mounted at one end of the developing roller 131 close to the first end 11. The powder feeding gear 42 is coaxially and fixedly mounted at one end of the powder feeding roller close to the first end 11. The stirring gear 45 is coaxially and fixedly mounted at one end of the stirring frame close to the first end 11. The driving gear 43 meshes with both the developing gear 41 and the powder feeding gear 42, directly transmitting the driving force to the developing gear 41 and the powder feeding gear 42. Meanwhile, the driving gear 43 can transmit the driving force to the stirring gear 45 through the idle gear 44.

[0110] As Figures 6 - 7 shown, the second end 12 is further provided with a powder filling port 121, a locked part 124, and an electrode 125. The electrode 125 protrudes outward relative to the second end 12 in the first direction. The electrode 125 receives electric energy from the image forming device and transmits the electric energy to the developing roller 131 and the powder feeding roller, that is, the electrode 125 is electrically connected to the developing roller 131 and the powder feeding roller. The powder filling port 121 penetrates the second end 12 in the first direction. It is used to allow the developer to enter the cartridge 10 and is provided with a matching cover for sealing the powder filling port 121 to prevent the developer in the cartridge 10 from leaking. In other embodiments, the electrode 125 can be electrically connected only to the powder feeding roller or only to the developing roller 131.

[0111] The second end 12 is further provided with a second contact part 126. In this application, the second contact part 126 is integrally formed with the cartridge 10. In the first direction, it is symmetrically arranged with the contact part 114 at the first end 11 and the second end 12 of the developing cartridge 1. In the second direction, the second contact part 126 is closer to the fourth end 14 than the powder filling port 121. It cooperates with the contact part 114 and the door cover 92 to lift the developing cartridge 1 relative to the drum assembly 2. The cooperation of the contact part 114 and the second contact part 126 with the door cover 92 to lift the developing cartridge 1 is more stable than only the cooperation of the contact part 114 with the door cover 92 to lift the developing cartridge 1. The setting position, shape, etc. of the second contact part 126 are the same as those of the contact part 114. Therefore, in the subsequent description, the contact part 114 is taken as an example for illustration. The cooperation dimensions, distances, etc. involved in the contact part 114 mentioned later also apply to the second contact part 126.

[0112] When the developing cartridge 1 is installed in the drum unit 2, the locking member 222 cooperates with the locked member 124. Specifically, the locking member 222 has a locking surface 2221. When the locking member 222 first cooperates with the locked member 124, the locking surface 2221 faces the locked surface 1241, and there is a second distance H2 therebetween. At this time, the developing cartridge 1 can move up and down in the third direction within the drum unit 2, and the moving distance is the same as the second distance H2. When the developing cartridge 1 needs to be removed from the drum unit 2, the user presses the locking member 222, causing the locking member 222 to rotate around an axis parallel to the first direction, and the cooperation between the locking member 222 and the locked member 124 is cancelled, so that the developing cartridge 1 can be removed from the drum unit 2.

[0113] As Figures 8 - 11 shown, a rail 915 is provided on the side wall 91 of the image forming apparatus. The rail 915 is divided into an upper rail 9151 and a lower rail 9152. In the third direction, the upper rail 9151 is located above the lower rail 9152. The second protrusion 911 and the blocking protrusion 912 are both located on the upper rail 9151. The second protrusion 911 has a second electrical terminal 913 on the front side in the second direction, and the blocking protrusion 912 has an electrical terminal 914 on the front side in the second direction. The image forming apparatus further has a door 92, and a lifting portion 921 is provided on the door 92. In this embodiment, the lifting portions 921 are symmetrically provided on the door 92, and the door 92 can be rotated counterclockwise from the open position S1 to the closed position S2 along the closing trajectory M1 to be closed. During the process of installing the developing cartridge 1 and the drum unit 2 into the image forming apparatus, the second storage medium 27 on the drum unit 2 needs to pass over the second protrusion 911 along the installation direction before it can be electrically connected to the second electrical terminal 913, and the storage medium 52 on the developing cartridge 1 needs to pass over the blocking protrusion 912 to be electrically connected to the electrical terminal 914.

[0114] In this embodiment, the blocking structure is the blocking protrusion 912, and the lifting structure is the contact portion 114. The developing cartridge 1 is installed along the rail 915, so that after the electrical contact surface 53 passes under the blocking structure, the electrical contact surface 53 and the developing cartridge 1 are lifted upward together, so as to form an electrical contact with the electrical terminal 914. Further, when the developing cartridge 1 is installed, it has a first position and a second position. When the developing cartridge 1 and the drum unit 2 are installed together in the image forming apparatus, when the electrical contact surface 53 passes over the blocking structure along the installation direction and the second electrical contact surface 271 is in contact with the second electrical terminal 913, the developing cartridge 1 is in the first position. At this time, the electrical contact surface 53 is located below the electrical terminal 914. Then, the lifting structure receives the acting force from the image forming apparatus and drives the developing cartridge 1 to be lifted upward from the first position to the second position. At this time, the electrical contact surface 53 is electrically connected to the electrical terminal 914.

[0115] Specifically, when the developing cartridge 1 and the drum unit 2 are installed into the image forming apparatus, the bracket 51 moves along the rail 915 over the blocking protrusion 912 and stops at a position directly opposite to the power supply terminal 914 of the image forming apparatus in the lower part in the third direction, that is, it reaches the first position. During this process, the storage medium 52 and the electrical contact surface 53 have no interference with the blocking protrusion 912, that is, the projection of the electrical contact surface 53 and the blocking protrusion 912 in the second direction does not overlap. And when the developing cartridge 1 is in the first position, there is a first distance H1 between the electrical contact surface 53 and the power supply terminal 914. Specifically, it is the distance from the electrical contact surface 53 to the end opposite to the electrical contact surface 53 of the power supply terminal 914 in the third direction. And when the developing cartridge 1 is in the first position, the second storage medium 271 on the drum unit 2 contacts the second power supply terminal 913, and the image forming apparatus recognizes the information of the drum unit 2.

[0116] When the developing cartridge 1 is located at the first position, the door 92 rotates counterclockwise from the open position S1 to the closed position S2 along the closing trajectory M1. When the door 92 is closed, the lifting portion 921 can abut against the contact portion 114 and drive the developing cartridge 1 to move together, so that the developing cartridge 1 generates a displacement in the third direction. When the door 92 is completely closed, the developing cartridge 1 is in the second position in the image forming apparatus, the electrical contact surface 53 contacts the power supply terminal 914, and the image forming apparatus recognizes the information of the developing cartridge 1. The surface to be locked 1241 also moves in the third direction together with the developing cartridge 1, and the surface to be locked 1241 fits with the locking surface 2221. Preferably, the first distance H1 is set to be greater than or equal to the second distance H2, so that the surface to be locked 1241 and the locking surface 2221 can fit tightly to prevent the developing cartridge 1 from shaking in the drum unit 2 during the operation of the image forming apparatus and affecting the printing quality.

[0117] Further, when the developing cartridge 1 reaches the first position, the electrical contact surface 53 can either cross over by fitting the lower end of the blocking protrusion 912 in the third direction or cross over with a certain distance from the lower end of the blocking protrusion 912. When the electrical contact surface 53 crosses over by fitting the lower end of the blocking protrusion 912 in the third direction, the distance between the electrical contact surface 53 and the power supply terminal 914, that is, the first distance H1, has a minimum value H10, that is, at this time H1 = H10. And when there is a certain distance (defined as H0) between the electrical contact surface 53 and the blocking protrusion 912, the distance between the electrical contact surface 53 and the power supply terminal 914, that is, the first distance H1, is the minimum value H10 plus the distance H0 between the electrical contact surface 53 and the blocking protrusion 912, that is, H1 = H10 + H0. The second distance H2 between the locking surface 2221 and the surface to be locked 1241 changes with the change of the first distance H1 between the electrical contact surface 53 and the power supply terminal 914 when the developing cartridge 1 is in the first position. As long as it is ensured that the first distance H1 is greater than or equal to the second distance H2, there is no limitation here.

[0118] In this embodiment, by providing a contact portion 114 on the developing cartridge 1, after the developing cartridge 1 is installed in the image forming apparatus, the contact portion 114 cooperates with the door cover 92, so that the developing cartridge 1 and the electrical contact surface 53 are lifted together relative to the drum unit 2 in the third direction, thereby achieving the purpose of contact recognition between the electrical contact surface 53 on the developing cartridge 1 and the electrical terminal 914. This enables the contact recognition between the electrical contact surface 53 and the electrical terminal 914 without the need to provide the support 51 as a movable chip holder, reducing the manufacturing cost of the developing cartridge 1. In some embodiments, the electrical terminal 914 has an elastic amount in the third direction. The first distance H1 between the electrical contact surface 53 and the electrical terminal 914 in the third direction can be set to be greater than the second distance H2. When the first distance H1 is greater than the second distance H2, the extra distance of the first distance H1 relative to the second distance H2 is equal to the elastic amount of the electrical terminal 914 in the third direction. When the electrical terminal 914 is set to have no elastic amount in the third direction, that is, when the electrical contact surface 53 and the electrical terminal 914 are in hard contact, the first distance H1 between the electrical contact surface 53 and the electrical terminal 914 in the third direction can be set to be equal to the second distance H2. In this embodiment, the electrical terminal 914 is movably provided relative to the rail 915 in the third direction, that is, it has a certain elastic amount, so the first distance H1 is set to be greater than or equal to the second distance H2.

[0119] In this embodiment, the electrical terminal 914 has a certain elastic amount in the third direction. Specifically, the movable amount range of the electrical terminal 914 in the third direction is 0 to 2 mm. The first distance H1 = H10 + H0, where the value range of H10 is 1 mm to 2 mm, and the value range of H1 is 0 to 2 mm. When H1 is 0, that is, the electrical contact surface 52 crosses in a way that it touches the blocking protrusion 912. When H1 is 2 mm, that is, the distance between the electrical contact surface 52 and the blocking protrusion 912 when the electrical contact surface 52 crosses the blocking protrusion 912 is 2 mm. Therefore, when the first distance H1 is equal to the second distance H2, the value range of H1 is 1 to 4 mm. Therefore, the value range of the distance that the developing cartridge 1 moves relative to the drum unit 2 in the third direction is 1 to 6 mm, that is, the sum of the first distance H1 and the moving amount of the electrical terminal 914. The value range of the second distance H2 is 2 to 5 mm. In this embodiment, the first distance H1 can be considered as the distance that the developing cartridge 1 moves relative to the drum unit 2 in the third direction, and the moving amount of the electrical terminal 914 is also included in the range of the first distance H1.

[0120] As Figures 12 - 14As shown, when the developing cartridge 1 and the drum unit 2 are installed in the image forming apparatus at the first position, the lifting portion 921 rotates from the open position S1 to the closed position S2 and abuts against the contact portion 114, causing the developing cartridge 1 to be displaced in the third direction, and then from the first position to the second position, where the electrical contact surface 53 contacts the electrical terminal 914. Specifically, at the second position, that is, when the door 92 is fully closed, there is a door closing line L3. At this time, the line connecting the contact point where the contact portion 114 contacts the lifting portion 921 and the rotation axis of the power receiving portion 40 is L1, and the normal line between the power receiving portion 40 and the door 92 is L2, and the angle between L1 and L2 is the first angle A1. When the size of the contact portion 114 changes, the angle between L1 and L2 will also change accordingly. Suppose the position of the contact portion 114 becomes higher, that is, the contact point moves upward a certain distance in the third direction, and the angle between L1 and L2 becomes larger, which is the second angle A2 at this time. When the set size of the contact portion 114 changes in the opposite way, that is, the contact point moves downward a certain distance in the third direction, the angle between L1 and L2 becomes smaller, which is the third angle A3 at this time. The first angle A1 is preferably between the maximum value of the second angle A2 and the minimum value of the third angle A3, that is, the relationship between the three angles is: the first angle A1 is less than or equal to the second angle A2, and the first angle A1 is greater than or equal to the third angle A3. When the first angle A1 is greater than the second angle A2, after the door 92 is fully closed and reaches the door closing line L3, the door 92 rotates counterclockwise from the open position S1 to the closed position S2 and abuts against the contact portion 114 on the developing cartridge 1, causing the developing cartridge 1 to be displaced in the third direction. However, the contact between the contact portion 114 and the lifting portion 921 is relatively late, and the displacement of the developing cartridge 1 in the third direction is less than the first distance H1, and the electrical contact surface 53 does not contact the electrical terminal 914, and there is still a third distance H3 between the electrical contact surface 53 and the electrical terminal 914, and the image forming apparatus cannot recognize the developing cartridge 1; when the first angle A1 is less than the third angle A3, during the closing process of the door 92, the door 92 rotates counterclockwise from the open position S1 to the closed position S2 and abuts against the contact portion 114 on the developing cartridge 1, causing the developing cartridge 1 to be displaced in the third direction. However, the contact between the contact portion 114 and the lifting portion 921 is relatively early. When the displacement of the developing cartridge 1 in the third direction is equal to the first distance H1, the electrical contact surface 53 can contact the electrical terminal 914, but the door 92 can only reach the door not closed line L31 and cannot reach the door closing line L3, that is, the door 92 cannot be closed, and the image forming apparatus cannot work properly.

[0121] Preferably, the second angle A2 is equal to 16.5°, and the third angle A3 is equal to 12°. The first angle A1 is less than or equal to 16.5°. The door cover 92 rotates counterclockwise from the open position S1 to the closed position S2 and abuts against the contact portion 114 on the developing cartridge 1, causing the developing cartridge 1 to displace a first distance H1 in the third direction. When the door cover 92 is completely closed and reaches the door cover closing line L3, the electrical contact surface 53 contacts the electrical terminal 914. When the first angle A1 is greater than or equal to 12°, the door cover 92 rotates counterclockwise from the open position S1 to the closed position S2 and abuts against the contact portion 114 on the developing cartridge 1, causing the developing cartridge 1 to displace a first distance H1 in the third direction. When the door cover 92 is completely closed and reaches the door cover closing line L3, the electrical contact surface 53 contacts the electrical terminal 914. Conversely, when the first angle A1 is greater than 16.5°, when the door cover 92 is completely closed and reaches the door cover closing line L3, the electrical contact surface 53 on the developing cartridge 1 does not contact the electrical terminal 914, and there is a third distance H3 between the electrical contact surface 53 and the electrical terminal 914. When the first angle A1 is less than 12°, after the electrical contact surface 53 contacts the electrical terminal 914, the door cover 92 is not completely closed and can only reach the door cover not closed line L31, and the image forming apparatus cannot operate normally.

[0122] It should be noted that the second angle A2 being equal to 16.5° and the third angle A3 being equal to 12° are only an angle range designed for the specific design dimensions of the developing cartridge and the image forming apparatus in this embodiment. In other embodiments, adaptive changes can be made according to the relevant design dimensions of the developing cartridge and different models of the image forming apparatus to achieve the above purpose. For example, for the remaining angles and the angle between L1 and L2 remains unchanged, but the distance between the contact point of the contact portion 114 and the lifting portion 921 in the second direction and the driving portion changes, which can also achieve an effect similar to the angle change, that is, as long as the contact portion between the contact portion 114 and the door cover 92 is on the movement track M2 of the contact point of the door cover 92, specific limitations are not made here. As long as the contact portion 114 is provided on the developing cartridge 1 and cooperates with the lifting portion 921 on the door cover 92 to cause the cartridge body 10 to displace in the third direction so that the electrical contact surface 53 contacts the electrical terminal 914 and the developing cartridge can operate normally.

[0123] In the present application, the distance between the projection of the contact portion 114 and the rotation axis of the power receiving portion 40 in the first direction ranges from 110 mm to 118 mm, and the distance between the projection of the contact portion 114 and the rotation axis of the developing roller 131 in the first direction ranges from 128 mm to 134 mm. The distance between the contact point of the lifting portion 921 and the contact portion 114 and the projection of the rotation axis of the power receiving portion 40 in the first direction ranges from 110 mm to 118 mm. Preferably, the distance between the contact point of the lifting portion 921 and the contact portion 114 and the projection of the rotation axis of the power receiving portion 40 in the first direction ranges from 110 mm to 115.5 mm. Due to certain differences in different image forming apparatuses, the contact point changes with the position of the lifting portion 921. In the present application, as long as the distances between the projection of the contact portion 114 and the projection of the contact point between the contact portion 114 and the lifting portion 921 in the first direction and the projection of the rotation axis of the power receiving portion 40 in the first direction satisfy the above ranges, in other embodiments, according to the corresponding dimensions of the developing cartridge 1 and the image forming apparatus, it is also possible to set the contact portion 114 outside this range, and no excessive limitations are made specifically.

[0124] In this embodiment, by providing the contact portion 114 on the developing cartridge 1, after the developing cartridge 1 and the drum assembly 2 are installed together in the image forming apparatus, the contact portion 114 on the developing cartridge 1 cooperates with the door cover 92, so as to achieve the contact recognition between the electrical contact surface 53 on the developing cartridge 1 and the electrical terminal 914. There is no need to provide a movable bracket on the developing cartridge 1 to cooperate with the blocking protrusion 912 to move the electrical contact surface 53 relative to the developing cartridge 1 and then contact the electrical terminal. Instead, only an integrally formed bracket needs to be provided, which reduces the manufacturing cost of the developing cartridge 1.

[0125] Embodiment Two:

[0126] This embodiment is generally the same as Embodiment One. The main difference lies in that: the force received by the lifting structure of the developing cartridge comes from different positions of the image forming apparatus. The lifting structure in this embodiment cooperates with the track of the image forming apparatus to drive the developing cartridge to lift, and the lifting structure in this embodiment can move relative to the developing cartridge. The lifting structure in this embodiment includes an elastic member 63 and a support member 62.

[0127] Such as Figures 15 - 18As shown, the drum assembly 2 includes a locking member 222. In this embodiment, the locking member 222 is disposed on the first wall 21 of the drum assembly 2. The locking member 222 includes an elastic arm 2222, which is preferably a torsion spring. The elastic arm 2222 is sleeved on the locking member 222. One end of the elastic arm 2222 abuts against the locking member 222, and the other end abuts against the first wall 21 of the drum assembly, so that the locking member 222 is maintained in the locked position by the elastic arm 2222. When the user presses the locking member 222 to rotate the locking member 222 from the locked position to the unlocked position, the elastic arm 2222 undergoes elastic deformation and accumulates elastic potential energy. After the developing cartridge is taken out and the user no longer presses, the elastic potential energy accumulated by the elastic arm 2222 causes the locking member 222 to reverse from the unlocked position to the locked position. The locking member 222 is provided with a locking groove 2223.

[0128] The drum assembly 2 further includes a drum pushing member. In this embodiment, the first drum pushing member includes a first force-applying member 212 and a first force-applying elastic member 213. The first force-applying elastic member 213 abuts between the drum assembly and the first force-applying member 212, so that the first force-applying member 212 can move relative to the drum assembly 2 in the second direction. The arrangement of the second drum pushing member is the same as that of the first drum pushing member, which will not be elaborated here.

[0129] As Figures 19 - 22 shown, the first end 11 is provided with a first cover 111. The identification component of the developing cartridge is located at the first end 11 of the cartridge body and is specifically disposed on the first cover 111. The identification component includes a storage medium 52, an electrical contact surface 53, a bracket 51, and a lifting structure. Among them, the lifting structure includes an elastic member 63 and a support member 62.

[0130] The bracket 51 is used to mount the storage medium 52, the electrical contact surface 53, the elastic member 63, and the support member 62. In this embodiment, the bracket 51 includes a first bracket portion 511 and a second bracket portion 512. The first bracket portion 511 and the second bracket portion 512 are integrally formed. In the second direction, the first bracket portion 511 is located in front of the second bracket portion 512. The first bracket portion 511 is used to mount the storage medium 52. Specifically, an installation groove 513 is formed above the first bracket portion 511, and the storage medium 52 is installed in the installation groove 513, and the electrical contact surface 53 fixed on the storage medium 52 is exposed outside the first bracket portion 511. The second bracket portion 512 is used to mount the support member 62 and the elastic member 63. A hole is formed at the lower end of the second bracket portion 512.

[0131] As Figure 21As shown, the support member 62 extends in the third direction. The upper end of the support member 62 passes through the mounting hole of the second support portion 512, and the lower end is exposed outside the support 51. The support member 62 can move relative to the second support portion 512 in the third direction. The support member 62 has a support portion 621, and the support portion 621 is located at the lower end of the support member 63. The support portion 621 is used to abut against the rail 915 of the image forming device to provide a force for moving the developing cartridge upward relative to the drum assembly in the third direction. The support portion 621 has a support inclined surface 6211, and the support inclined surface 6211 is a plane or an arc surface. The support inclined surface 6211 is used to cooperate with the first lower sub-segment 8a1 of the rail of the image forming device hereinafter to guide the support portion 621 so that the support portion 621 can smoothly move along the first lower sub-segment 8a1 of the rail of the image forming device to above the rail. The support member 62 has a hook 622, and the hook 622 is used to engage with the card slot 5121 on the side wall of the second support portion 512 to prevent the support member 62 from disengaging from the lower end of the second support portion 512 when moving in the third direction. One end of the elastic member 63 abuts against the second support portion 512, and the other end abuts against the support member 62. The elastic member 63 is used to provide an elastic force for the support member 62 to move relative to the drum assembly in the third direction.

[0132] In the second and third directions, at least a part of the projection of the support portion 621 and the electrical contact surface 53 coincides. Specifically, the support portion 621 is located behind the storage medium 52 and the electrical contact surface 53 in the second direction, and below the storage medium 52 and the electrical contact surface 53 in the third direction. Both the support portion 621 and the electrical contact surface 53 have parts located in a plane perpendicular to the first direction. There are multiple electrical contact surfaces 53 on the storage medium 52, and the multiple electrical contact surfaces 53 are arranged in the first direction. In the third direction, a part of the projection of the support member 62 and the electrical contact surface 53 coincides.

[0133] In the first direction, the distance between the electrical contact surface 53 and the first end 11 is greater than the distance between the support member 52 and the first end 11, and the value range of the difference is 6 mm to 12 mm. The value range of the distance between the electrical contact surface 53 and the projection of the rotation axis of the power receiving portion 40 in the first direction is 51 mm to 58 mm. The value range of the distance between the support member 62 and the projection of the power receiving portion 40 in the first direction is 42 to 68 mm.

[0134] When the developing cartridge 1 is installed in the drum assembly 2, the identification assembly is located outside the drum assembly 2. Specifically, the support portion 621 of the support member 62 is farther from the second wall 22 than the first wall 21.

[0135] The developing cartridge 1 further includes cartridge pressing members. In this embodiment, the cartridge pressing members are disposed at the fourth end 14 in the second direction and symmetrically disposed at the first end 11 and the second end 12 in the first direction. The cartridge pressing members include a first cartridge pressing member 113 and a second cartridge pressing member 123. In this embodiment, compared with the first embodiment, the cartridge pressing members only have different positions, and the rest of the functions are exactly the same, so no more details will be described here.

[0136] When the developing cartridge is installed on the drum unit 2, the locked member 124 pushes the locking member 222, causing the locking member 222 to rotate. The locked member 124 is inserted into the locking groove 2223, and the locking member 222 rotates in the reverse direction under the elastic force of the elastic arm 2222, so that the developing cartridge 1 is in a locked state within the drum unit 2.

[0137] As Figure 18 shown, in order to ensure that during the process of installing the developing cartridge and the drum unit 2 in the image forming apparatus, the developing cartridge 1 locked within the drum unit 2 can move upward or downward relative to the drum unit 2 in the third direction to achieve electrical connection between the identification component and the electrical terminal 914, the distance that the first cartridge pressing member 113 can move downward relative to the drum unit 2 in the third direction is set to be larger than the distance that the second cartridge pressing member 123 can move downward relative to the drum unit 2 in the third direction. Specifically, the first cartridge pressing member 113 does not abut against the bottom wall of the drum unit in the third direction, and the second cartridge pressing member 123 abuts against the bottom wall in the third direction. The lower end of the first cartridge pressing member 113 has a recess 1131, and the lower end of the second cartridge pressing member 123 has a protrusion 1231. When the developing cartridge 1 is locked within the drum unit 2, there is a gap between the recess 1131 of the first cartridge pressing member 113 and the bottom wall of the drum unit 2 in the third direction, that is, the first cartridge pressing member 113 does not abut against the bottom wall in the third direction, and the protrusion 1231 of the second cartridge pressing member 123 abuts against the bottom wall of the drum unit 2 in the third direction, so that the first cartridge pressing member 113 of the developing cartridge 1 has sufficient distance to move upward or downward relative to the drum unit 2 in the third direction. Thus, during the process of installing the developing cartridge and the drum unit 2 in the image forming apparatus, the first end 11 of the developing cartridge 1 locked within the drum unit 2 can move upward or downward relative to the drum unit 2 in the third direction to achieve electrical connection between the identification component and the electrical terminal 914. The first cartridge pressing member 113 does not abut against the bottom wall in the third direction, and the second cartridge pressing member 123 abuts against the bottom wall in the third direction, which also enables the cartridge pressing members and the bottom wall to play a good role in maintaining the contact between the developing roller and the photosensitive drum.

[0138] In this embodiment, both the identification component and the locked member 124 are disposed on the first cover 111. Specifically, the dimension of the first cover 111 close to the fourth end 14 in the second direction is shortened, and the dimension of the cartridge body 10 close to the fourth end 14 in the first direction is lengthened, so that the identification component and the locked member 124 can be disposed at this position. Specific details are not limited here too much.

[0139] In this embodiment, the size of the first cartridge pushing member 113 in the third direction is smaller than the size of the second cartridge pushing member 123 in the third direction. That is, in the first direction, the projection of the second cartridge pushing member 123 completely covers the projection of the first cartridge pushing member 113. Therefore, the distance that the first cartridge pushing member 113 can move upward or downward relative to the drum assembly 2 in the third direction is greater than the distance that the second cartridge pushing member 123 can move upward or downward relative to the drum assembly 2 in the third direction. As a result, the first end 11 of the developing cartridge 1 can move upward or downward relative to the drum assembly 2 in the third direction. Its function is similar to that of the first embodiment, and the moving distance is approximately the same as the first distance H1 in the first embodiment. Specifically, it will not be elaborated here too much.

[0140] In this embodiment, the size of the first cartridge pushing member 113 in the third direction is smaller than the size of the second cartridge pushing member 123 in the third direction, that is, there is a certain difference between the size of the second cartridge pushing member 123 in the third direction and the size of the first cartridge pushing member 113 in the third direction, and the value range thereof is 2 mm to 4.5 mm.

[0141] In some embodiments, the structure of the second cartridge pushing member 123 can also be changed simultaneously, so that the first cartridge pushing member 113 can move the same or a greater distance relative to the drum assembly 2 in the third direction compared with the second cartridge pushing member 123. Specifically, the protruding portion 1231 at the lower end of the second cartridge pushing member 123 is continuously extended downward in the third direction to increase the distance between the first cartridge pushing member 113 and the bottom wall of the drum assembly 2 in the third direction.

[0142] As Figures 23 - 25 shown, the rail 915 includes an upper rail 9151 and a lower rail 9152. The lower rail 9152 includes a first lower sub-segment 8a1, a second lower sub-segment 8a2, a third lower sub-segment 8a3, a fourth lower sub-segment 8a4, and a fifth lower sub-segment 8a5 that are connected in sequence.

[0143] The first lower sub-segment 8a1 is an inclined surface. The front end of the first lower sub-segment 8a1 is higher than the rear end. The first lower sub-segment 8a1 is used to guide the support portion 621 of the support member 62. The second lower sub-segment 8a2 is substantially parallel to the second direction. The third lower sub-segment 8a3 is an inclined surface. The inclination direction of the third lower sub-segment 8a3 is opposite to that of the first lower sub-segment 8a1. The fourth lower sub-segment 8a4 is substantially parallel to the second direction. The inclination direction of the fifth lower sub-segment 8a5 is opposite to that of the first lower sub-segment 8a1.

[0144] The upper rail 9151 includes a first protrusion 8b11, a first upper sub-segment 8b1, a second upper sub-segment 8b2, a third upper sub-segment 8b3, a fourth upper sub-segment 8b4, a fifth upper sub-segment 8b5, a sixth upper sub-segment 8b6, and an identification recess 8b7 that are sequentially connected. Among them, in this embodiment, the protrusion structure formed between the fifth upper sub-segment 8b5 and the sixth upper sub-segment 8b6 can be understood as equivalent to the blocking protrusion 912 in the first embodiment, and the function it plays is exactly the same as that of the blocking protrusion 912 in the first embodiment, that is, the blocking structure in this embodiment is the protrusion structure formed between the fifth upper sub-segment 8b5 and the sixth upper sub-segment 8b6.

[0145] The first upper sub-segment 8b1 is an inclined surface, the front end of the first upper sub-segment 8b1 is lower than the rear end, the first upper sub-segment 8b1 is substantially opposite to the inclination direction of the first lower sub-segment 8a1, the second upper sub-segment 8b2 is substantially parallel to the second direction, the third upper sub-segment 8b3 is substantially the same as the inclination direction of the first upper sub-segment 8b1, the fourth upper sub-segment 8b4 is substantially the same as the second direction, the fifth upper sub-segment 8b5 and the sixth upper sub-segment 8b6 are substantially the same as the inclination direction of the first upper sub-segment 8b1, there is a height difference between the fifth upper sub-segment 8b5 and the sixth upper sub-segment 8b6, the sixth upper sub-segment 8b6 is located in front of and below the fifth upper sub-segment 8b5, and the identification recess 8b7 is located above the front end of the fifth upper sub-segment 8b5 in the third direction.

[0146] The distance from the second upper sub-segment 8b2 to the first lower sub-segment 8a1 is D0, the distance from the fourth upper sub-segment 8b4 to the second lower sub-segment 8a2 is D1, the distance from the fourth upper sub-segment 8b4 to the fourth lower sub-segment 8a4 is D2, the distance from the fifth upper sub-segment 8b5 to the fifth lower sub-segment 8a5 is D3, the distance from the sixth upper sub-segment 8b6 to the fifth lower sub-segment 8a5 is D4, and the distance from the identification recess 8b7 to the fifth lower sub-segment 8a5 is D5. D0 > D1, D2 > D1, D3 > D2, D4 < D3, D5 > D4. D1 = 24.8 ± 1 mm, D2 = 26.7 ± 1 mm, D3 = 27.4 ± 1 mm, D4 = 25.1 ± 1 mm, D5 = 27.2 ± 1 mm.

[0147] Such as Figures 26 - 28As shown, when the developing box 1 locked in the drum assembly 2 is loaded into the image forming device from back to front along the second direction together with the drum assembly 2, the storage medium 52 on the identification assembly is located below the first protrusion 8b11 and does not contact the first protrusion 8b11, and the support member 63 does not contact the lower rail 9152. Next, the storage medium 52 is not in contact with the first upper sub-segment 8b1 and the second upper sub-segment 8b2, and at this time, the support member 62 is not in contact with the lower track 9152 (this process may also be that the storage medium 52 is in contact with the front end of the first upper sub-segment 8b1 and the second upper sub-segment 8b2, and at this time, the support member 62 is not in contact with the lower track 9152, so that the storage medium 52 is subjected to a downward force, the developer box moves downward as a whole, and the elastic member 63 is not compressed). Next, the storage medium 52 moves to the third upper sub-segment 8b3 and is abutted by the third upper sub-segment 8b3, so that the developer box moves downward as a whole again, and at this time, the elastic member 63 may not abut against the first lower segment 8a1 (the elastic member 63 may also abut against the first lower segment 8a1. If the elastic member 63 is in contact with the first lower segment 8a1, the support portion 621 of the support member 62 abuts against the first lower segment 8a1 and moves upward along the first lower segment 8a1, so that the developer box 1 moves upward relative to the drum assembly 2 as a whole, and the support portion 621 squeezes the elastic member 63).

[0148] When the storage medium 52 moves to the fourth upper sub-segment 8b4, the support portion 6211 abuts against the first sub-segment 8a1 and moves upward along the first sub-segment 8a1, so that the developing cartridge 1 as a whole moves upward relative to the drum assembly 2, and the support portion 621 presses the elastic member 63. When the storage medium 52 is in the fourth upper sub-segment 8b4, the support portion 6211 moves from the first sub-segment 8a1 to the second lower sub-segment 8a2, and the support portion 621 moves downward under the elastic force of the elastic member 63 and abuts against the second lower sub-segment 8a2.

[0149] like Figure 27 As shown, when the storage medium 52 moves to the fifth upper sub-segment 8b5, the support portion 621 abuts against the third lower sub-segment 8a3. Since the distance between the fifth upper sub-segment 8b5 and the third lower sub-segment 8a3 is greater than D3, and D3>D2>D1, the elastic member 63 recovers its elastic extension and the developing box moves downward.

[0150] When the storage medium 52 moves over the protruding structure formed between the fifth upper sub-segment 8b5 and the sixth upper sub-segment 8b6 to the sixth upper sub-segment 8b6, the elastic member 63 is compressed and the support portion 621 abuts against the fourth lower sub-segment 8a4 and the fifth lower sub-segment 8a5.

[0151] When the storage medium 52 moves from the sixth upper sub-segment 8b6 to below the recognition recess 8b7, the support portion 621 abuts against the fifth lower sub-segment 8a5. Since D5 < D4, the entire developing cartridge 1 moves upward in the third direction relative to the drum assembly 2 under the action of the elastic recovery force of the elastic member 63, so that the electrical contact surface 53 enters the recognition recess 8b7 and contacts the electrical terminal 914, thereby realizing the electrical connection between the electrical contact surface 53 and the electrical terminal 914.

[0152] In this embodiment, when the storage medium 52 moves over the protrusion structure formed between the fifth upper sub-segment 8b5 and the sixth upper sub-segment 8b6 to the sixth upper sub-segment 8b6, the elastic member 63 is compressed at this time, and the length of the elastic member 63 in the third direction is C1. When the storage medium 52 moves over the sixth upper sub-segment 8b6 and moves to below the recognition recess 8b7, the elastic member 63 recovers under the action of the elastic force, and the electrical contact surface 53 is disengaged from the electrical terminal 914. At this time, the length of the elastic member 63 in the third direction is C2, and C2 is greater than C1. The value range of the difference between C2 and C1 is 2.1 mm to 4.1 mm, that is, 2.1 mm ≤ C2 - C1 ≤ 4.2 mm.

[0153] In this embodiment, the storage medium 52 abuts against the upper rail 9151. In some embodiments, the storage medium 52 can also be disposed inside the first support portion 511, and the first support portion 511 abuts against the upper rail 9151. The electrical contact surface 53 is transferred to the upper end of the first support portion 511, and finally, through the movement of the developing cartridge relative to the drum assembly in the third direction, the electrical contact surface 53 can enter the recognition recess 8b7 to contact and electrically connect with the electrical terminal 914.

[0154] In this embodiment, the support member 62 cooperates with the rail 915, so that the rail 915 exerts a reaction force on the support member 62 to compress the elastic member 63, and then the developing cartridge 1 is lifted relative to the drum assembly 2 through the elastic force. Therefore, whether the image forming apparatus directly applies a force to the lifting structure to force the developing cartridge 1 to lift or forces the developing cartridge 1 to lift through the reaction force, it is the image forming apparatus that acts on the lifting structure to force the developing cartridge to lift.

[0155] In this embodiment, the support member 62 of the developing cartridge 1 cooperates with the rail 915 of the image forming apparatus, so that the support member 62 moves upward / downward in the third direction during the installation of the developing cartridge 1, compressing / releasing the elastic member 63. When the storage medium 52 on the developing cartridge 1 interferes with the blocking structure, the support member 62 moves in the third direction to compress the elastic member 63. When the storage medium on the developing cartridge 1 passes over the blocking structure, the elastic member 63 is released, and the developing cartridge moves in the third direction, realizing that the electrical contact surface 53 enters the recognition recess 8b7 to contact and electrically connect with the electrical terminal 914.

[0156] Embodiment III

[0157] The difference between this embodiment and the first embodiment mainly lies in that when the developing cartridge is installed in this embodiment, the electrical contact surface abuts against the blocking structure and is extruded by the blocking structure to generate a downward displacement. After the electrical contact surface passes over the blocking structure from below, the extrusion effect disappears and it rises upward, so that the electrical contact surface forms an electrical contact with the electrical terminal.

[0158] As Figures 29 - 30 shown, the developing cartridge 1 is installed in the image forming apparatus through the rail 915. A groove is provided on the rail 915, and the groove is recessed upward along the third direction, and it has the same function as the identification recess 8b7 in the second embodiment. An electrical terminal 914 is provided in the groove and can be telescopic relative to the groove along the third direction. The plane where the highest surface of the groove is located in the third direction is the first plane X1, and the plane where the lowest end of the electrical terminal 914 is located in the third direction is the second plane X2. The longest distance between the first plane X1 and the second plane X2 in the third direction is about 2 mm, that is, the longest distance that the electrical terminal 914 can extend relative to the groove is 2 mm. The electrical terminal 914 can also be completely retracted inside the groove, that is, the distance between the first plane X1 and the second plane X2 in the third direction is zero.

[0159] Along the installation direction of the developing cartridge 1, a blocking protrusion 912 is provided at the rear of the groove. The blocking protrusion 912 protrudes downward. The plane where the lowest end of the blocking protrusion 912 is located in the third direction is the third plane X3. Along the third direction, the third plane X3 is located below the first plane X1 and the second plane X2, and the distance D2 between the first plane X1 and the third plane X3 is about 3 mm. In this embodiment, the blocking structure is the blocking protrusion 912.

[0160] The first end 11 is further provided with a first cartridge urging member 113. In this embodiment, the first cartridge urging member 113 is located between the rotation axis of the power receiving portion 40 and the rotation axis of the stirring gear 45. In some embodiments, the first cartridge urging member 113 may be located behind the rotation axis of the stirring gear 45.

[0161] As Figure 31As shown, in this embodiment, the bracket 51 includes a mounting groove 513, a first surface 514, a second surface 515, and a mounting hole 516. The mounting groove 513 is a groove that is recessed downward in the third direction. The first surface 514 and the second surface 515 are respectively located at both ends of the mounting groove 513 along the second direction. Both of them are inclined surfaces or arc surfaces, but the inclination directions intersect. The first surface 514 extends forward along the second direction and extends downward along the third direction. The second surface 515 extends forward along the second direction and extends upward along the third direction. The first surface 514 is mainly used to contact the blocking protrusion 912 when the developing cartridge 1 is installed into the image forming apparatus, and the second surface 515 is mainly used to contact the blocking protrusion 912 when the developing cartridge 1 is removed from the image forming apparatus. In this embodiment, the mounting hole 516 is preferably a threaded hole, so that the bracket 51 is fixedly installed on the first cover 111 by screws 46. In other embodiments, the first surface 514 and the second surface 515 may not be provided.

[0162] As Figures 32 - 34 shown, the storage medium 52 is fixedly installed on the mounting groove 513 of the bracket 51 by gluing or welding. A clamping structure is also provided in the mounting groove 513 to facilitate the installation of the storage medium. The electrical contact surface 53 is planar. In this embodiment, the electrical contact surface 53 is lower than the highest surface around the mounting groove 513 of the bracket 51 to protect the storage medium 52 and the electrical contact surface 53. In some embodiments, the electrical contact surface 53 may be flush with or higher than the highest surface of the mounting groove 513.

[0163] Taking the plane where the electrical contact surface 53 is located as the fourth plane X4, and the plane passing through the rotation axis of the power receiving portion 40 and parallel to the fourth plane X4 as the fifth plane X5. Along the third direction, the height difference D3 between the fourth plane X4 and the fifth plane X5 is 33 mm to 36 mm, and preferably 33.5 mm to 35.5 mm in this embodiment. In some embodiments, if the electrical contact surface 53 is an arc surface or an inclined surface, then the fourth plane X4 is the tangent plane at the top of the arc surface or the inclined surface.

[0164] In this embodiment, when the developing cartridge 1 is installed into the image forming apparatus, the storage medium 52 can pass over the blocking protrusion 912 from below without moving relative to the cartridge body 10, and the electrical contact surface 53 is in stable contact with the electrical terminal 914. The installation process is as follows:

[0165] During the process of installing the developing cartridge 1 into the image forming apparatus, the first surface 514 of the bracket 51 interferes with the blocking protrusion 912. The first surface 332 gradually bears the abutting force applied by the blocking protrusion 912 in the direction opposite to its extending direction. At this time, the storage medium 52 does not need to be squeezed by the blocking protrusion 912. As the developing cartridge 1 continues to move in the installation direction, the blocking protrusion 912 abuts on the electrical contact surface 53 of the storage medium 52. The electrical contact surface 53 is slightly squeezed by the blocking protrusion 912, resulting in a slight downward displacement or a slight deformation of the electrical contact surface 53. At this squeezing degree, the storage medium 52 will not be damaged and will not prevent the developing cartridge 1 from continuing to move in the installation direction. The developing cartridge 1 continues to move in the installation direction, and the electrical contact surface 53 is no longer squeezed by the blocking protrusion 912, so it resets upward. The developing cartridge 1 is completely installed at the installation position on the image forming apparatus, and the electrical contact surface 53 contacts the electrical terminal 914.

[0166] After the developing cartridge 1 is completely installed in the image forming apparatus, the distance between the fourth plane X4 where the electrical contact surface 53 is located and the third plane X3 where the lowest end of the blocking protrusion 912 is located in the third direction is 1 mm to 3 mm. The fourth plane X4 is above the third plane X3. This distance is the amplitude of the slight downward displacement generated after the electrical contact surface 53 is squeezed, and its function is to allow the electrical contact surface 53 to pass below the blocking protrusion 912. If the height of the fourth plane X4 above the third plane X3 is less than 1 mm, the electrical contact surface 53 cannot stably contact the electrical terminal 914 after the developing cartridge 1 is completely installed in the image forming apparatus. If the height of the fourth plane X4 above the third plane X3 is greater than 3 mm, the electrical contact surface 53 cannot cross over the blocking protrusion 912 from below, that is, the developing cartridge 1 cannot be correctly installed in the image forming apparatus.

[0167] That is, along the third direction, if the height difference D3 between the fourth plane X4 and the fifth plane X5 is less than 33.5 mm, the electrical contact surface 53 cannot stably contact the electrical terminal 914. If the height difference D3 between the fourth plane X4 and the fifth plane X5 is less than 35.5 mm, the developing cartridge 1 may not be correctly installed in place. Therefore, in this embodiment, along the third direction, the height difference D3 between the fourth plane X4 and the fifth plane X5 is preferably 33.5 mm to 35.5 mm.

[0168] In this embodiment, in order to achieve that during the installation process of the developing cartridge 1, when the storage medium 52 and the electrical contact surface 53 are abutted by the blocking protrusion 912, it does not prevent the developing cartridge 1 from continuing to move in the installation direction and can stably contact the electrical terminal 914 after crossing the protrusion, the height of the electrical contact surface 53 is precisely designed. At the same time, adopting this structure simplifies the structure of the developing cartridge and reduces the production difficulty of the developing cartridge.

[0169] Embodiment Four

[0170] This embodiment is generally the same as Embodiment 1, and the main differences are as follows: The force received by the lifting structure of the developing cartridge comes from different positions of the image forming apparatus. In Embodiment 1, the lifting structure receives the force from the lifting portion on the door of the image forming apparatus to drive the lifting of the developing cartridge, while the lifting structure of this embodiment receives the force from the link associated with the door to drive the lifting of the developing cartridge.

[0171] As Figures 35 - 36 shown, the image forming apparatus includes a link 93 and a side wall 91. The link 93 and the door 92 can be linked. After the developing cartridge 1 is installed in the image forming apparatus, the door 92 closes along the closing trajectory M1. When closing, while driving the link 93 to move forward along the second direction, it will also move upward along the third direction. When the door 92 is completely closed, the link 93 also stops moving. The side wall 91 is provided with a track 915 and an electrical terminal 914 of the developing cartridge 1. The electrical terminal 914 can contact the storage medium 52 to achieve electrical connection.

[0172] In this embodiment, the bracket 51 is integrally formed with the first cover 111, is hollow inside and has a lifting structure installed inside. It also has a first opening 517 that faces rightward in the first direction.

[0173] The lifting structure has an elastic member and a support member. In this embodiment, the elastic member and the support member include a first movable portion 31, a first elastic member 32, a second movable portion 33, and a second elastic member 34.

[0174] The first movable portion 31 is located at the first opening 517 and can move left and right in the first direction. A first elastic member 32 is provided between it and the cartridge body 10. When the first movable portion 31 moves left and right in the first direction, it can compress the first elastic member 32. In the third direction, the second movable portion 33 is located above the first movable portion 31 and abuts against the first movable portion 31. The second movable portion 33 can move up and down along the third direction, and a second elastic member 34 is also provided between it and the bracket 51. When the second movable portion 33 moves up and down in the third direction, it can compress the second elastic member 34.

[0175] In this embodiment, the first movable part 31 is provided with a first inclined surface 311, a first claw 312, and a second inclined surface 313. The first inclined surface 311 is disposed on the side of the first movable part 31 away from the cartridge in the first direction, and extends downward in the third direction. The first claw 312 is disposed on the front and rear sides of the first movable part 31 in the second direction. The second inclined surface 313 is located above the first movable part 31 in the third direction and slopes upward along the third direction. The second inclined surface 313 abuts against the second movable part 33. The bracket 51 is provided with second openings 518 on the front and rear sides of the first opening 517. The second openings 518 cooperate with the first claws 312. When the first movable part 31 moves left and right in the first opening 517 in the first direction, the first claws 312 cooperate with the second openings 518 to limit the movement locus of the first movable part 31. The link 93 has a bent angle 932. When the door 92 is closed, the link 93 is driven to move forward and upward. The first inclined surface 311 can abut against the bent angle 932, and then receive the upward force transmitted by the link 93 to move the first movable part 31 leftward in the first direction.

[0176] The second movable part 33 is provided with second claws that can cooperate with the bracket 51 to limit the movement locus of the second movable part 33. The lower side of the second movable part 33 in the third direction abuts against the first inclined surface 313. When the first movable part 31 moves leftward in the first direction, the second movable part 33 can receive the force transmitted by the first movable part 31 through the first inclined surface 313 and then move upward in the third direction. When the second movable part 33 moves upward, it can abut against the bracket 51, and then drive the developing cartridge 1 to move upward relative to the drum unit 2, or the second movable part compresses the second elastic member 34 to store elastic force in the second elastic member 34, and the developing cartridge 1 is driven by the second elastic member 34 to move upward relative to the drum unit 2.

[0177] As Figures 37 - 40 shown, in this embodiment, the specific cooperation process between the lifting structure and the image forming apparatus is as follows:

[0178] When the developing cartridge 1 is in the first position, at this time, the door 92 is moved along the closing locus M1 from the open position S1 to the closed position S2, driving the link 93 to move together.

[0179] When the connecting rod 93 is moving, the bent angle 932 thereon abuts against the first inclined surface 311 on the first movable part 31. When the first inclined surface 311 receives the force transmitted by the connecting rod 93 through the bent angle 932, it decomposes the force into forces along the first direction and the third direction. Among them, when the first component force F1 acting to the left along the first direction acts on the first movable part 31, it will cause the first movable part 31 to move to the left along the first direction, and the first elastic member 32 is compressed, accumulating an elastic force opposite to the first component force F1. This elastic force can make the first movable part 31 abut against the connecting rod 93 more securely, and the first component force F1 is transmitted more securely, preventing the phenomenon of insecure abutment. At the same time, it can also play a role in resetting the first movable part 31.

[0180] When the first movable part 31 moves to the left along the first direction under the action of the first component force F1, the second inclined surface 313 abuts against the second movable part 33, and the second inclined surface 313 generates a second component force F2 acting upward along the third direction on the second movable part 33. Under the action of the second component force F2, the second movable part 33 moves upward along the third direction, and the second elastic member 34 is compressed, accumulating an elastic force opposite to the second component force F2. This elastic force can make the second movable part 33 abut against the first movable part 31 more firmly, and the force is transmitted more securely. The second movable part 33 abuts against the bracket 51. When the door cover 92 drives the connecting rod 93 to continue moving, the second movable part 33 continues to be under the action of the second component force F2. At this time, the second movable part 33 continues to move upward, drives the developing cartridge 1 to move relative to the image forming apparatus through the bracket 51, so that the developing cartridge 1 reaches the second position, the electrical contact surface 53 is connected to the electrical terminal, the storage medium 52 is electrically connected to the image forming apparatus, and the image forming apparatus recognizes the information of the developing cartridge 1. At this time, at the closed position S2 where the door cover 92 is completely closed, the connecting rod 93 abuts against the first movable part 31, so that the developing cartridge 1 maintains the position where the existing storage medium 52 is in contact with the electrical terminal unchanged, and the developing cartridge 1 can work normally.

[0181] Further, in other embodiments, when the second movable part 33 moves upward along the third direction under the action of the second component force F2 and the second elastic member 34 is compressed to accumulate elastic force, the developing cartridge 1 can be moved relative to the drum assembly 2 in the third direction through the second elastic member 34, so that the electrical contact surface 53 is in contact with the electrical terminal. Its lifting process is the same as that of the second embodiment and will not be elaborated here.

[0182] By providing a lifting structure on the developing cartridge, abutting against the connecting rod of the image forming apparatus, and using the movement of the connecting rod when the door cover is closed to achieve the overall lifting of the developing cartridge, so that the storage medium is in contact with the electrical terminal, the structure is simple and the operation is stable.

[0183] Embodiment Five

[0184] Compared with the fourth embodiment, this embodiment is different in that the second movable part 33 and the second elastic member 34 are not provided. The first movable part 31 is provided with a third inclined surface 314 and a fourth inclined surface 315 for avoiding the blocking part 917 on the side wall of the image forming device, and the abutting position of the first movable part 31 and the connecting rod 93 is different. The rest of the structure is exactly the same as that of the fourth embodiment.

[0185] As Figures 41 - 42 shown, the first movable part 31 is provided with a third inclined surface 314 and a fourth inclined surface 315, which are arranged on the side of the first movable part 31 away from the cartridge 10 in the first direction. Both the third inclined surface 314 and the fourth inclined surface 315 extend forward / backward along the second direction respectively and finally converge, that is, when viewed in the third direction, the third inclined surface 314 and the fourth inclined surface 315 are triangular.

[0186] As Figures 43 - 45 shown, during the installation of the developing cartridge 1 and the drum assembly 2 into the image forming device, the first movable part 31 will abut against the side wall 91 of the image forming device, and the blocking part 917 is on the side wall 91 of the image forming device. When the developing cartridge 1 and the drum assembly 2 are installed on the image forming device along the track 915, the third inclined surface 314 abuts against the blocking part 917, and the blocking part 917 exerts a third component force F3 along the first direction (left) on the first movable part 31 through the third inclined surface 314. Under the action of the third component force F3, the first movable part 31 moves leftward along the first direction, and the first elastic member 32 is compressed, accumulating an elastic force opposite to the third component force F3. When the first movable part 31 moves leftward along the first direction and avoids the blocking part 917, the end of the first movable part 31 in the first direction continuously abuts against the side wall of the track 915, and the first elastic member 32 is continuously compressed. When the developing cartridge 1 and the drum assembly 2 are installed at the correct position in the image forming device along the track 915, that is, when the developing cartridge 1 is in the first position, at this time, the side wall of the track 915 no longer abuts against the first movable part 31, that is, the first movable part 31 does not have the third component force F3. At this time, the elastic force accumulated by the first elastic member 32 is released, pushing the first movable part 31 to move rightward along the first direction and at least partially extending into the side wall. At this time, when viewed in the second direction, the side wall 91 of the image forming device and the first movable part 31 at least partially overlap, and in the third direction, the first movable part 31 is at least partially located above the connecting rod 93.

[0187] Subsequently, the door cover 92 closes. When the door cover 92 rotates from the open position S1 to the closed position S2 along the trajectory M1 and closes, the door cover 92 drives the connecting rod 93 to move together. At this time, the upper surface 931 of the connecting rod 93 abuts against the first movable part 31, and the connecting rod 93 exerts an upward lifting force F4 on the first movable part 31 in the third direction. Since the first movable part 31 cannot move relative to the bracket 51 in the third direction, after receiving the lifting force F4, the developing cartridge 1 is driven by the bracket 51 to move upward relative to the image forming apparatus together, so that the electrical contact surface 53 is connected to the electrical terminal, and the information of the developing cartridge 1 stored in the storage medium 52 is recognized by the image forming apparatus. When the door cover 92 is in the fully closed position S2, the connecting rod 93 continuously abuts against the first movable part 31, so that the developing cartridge 1 maintains the existing position where the storage medium 52 contacts the electrical terminal without moving, and the developing cartridge 1 works normally.

[0188] Further, when the developing cartridge is used up and the developing cartridge 1 and the drum unit 2 are taken out from the image forming apparatus, the fourth inclined surface 315 first abuts against the side wall of the track 915, and the first movable part moves leftward in the first direction, and the first elastic member 32 is compressed. When the developing cartridge 1 and the drum unit 2 are completely taken out, the first elastic member 32 causes the first movable part 31 to move rightward in the first direction to reset, that is, the specific movement and abutting process of the first movable part 31 are opposite to those during installation, and will not be elaborated here.

[0189] By providing a lifting structure on the developing cartridge and abutting against the connecting rod of the image forming apparatus, the overall lifting of the developing cartridge is achieved by the movement of the connecting rod when the door cover closes, so that the storage medium contacts the electrical terminal, and the structure is simple and the operation is stable.

[0190] Embodiment Six

[0191] The difference between this embodiment and Embodiment Five is that this embodiment does not provide a lifting structure on the developing cartridge 1, but provides a lifting structure on the drum unit 2. In this embodiment, the lifting structure is the protruding part 214, and in this embodiment, the developing cartridge 1 and the drum unit 2 move together relative to the image forming apparatus, and the rest of the structure is exactly the same as that of Embodiment Five.

[0192] As Figures 46 - 48 shown, a protruding part 214 is provided on the first wall 21 of the drum unit 2, and the protruding part 214 protrudes relative to the drum unit 2 in the first direction.

[0193] When the developing cartridge 1 and the drum unit 2 are installed in the image forming apparatus and viewed in the third direction, at least a part of the protruding part 214 on the drum unit 2 is located above the plate-like part 933 on the connecting rod 93, that is, at least a part of the projections of the protruding part 214 and the plate-like part 933 coincide in the third direction.

[0194] When the door cover 92 rotates from the open position S1 to the closed position S2 along the trajectory M1 and closes, it drives the connecting rod 93 to move together. At this time, the plate-like portion 933 abuts against the protruding portion 214 on the drum assembly 2. The plate-like portion 933 exerts a second component force F2 upward along the third direction through the protruding portion 214. Under the action of the second component force F2, the drum assembly 2 drives the developing cartridge 1 to move relative to the image forming apparatus together, so that the electrical contact surface 53 is electrically connected to the electrical terminal 914, and the storage medium 52 is electrically connected to the image forming apparatus. At this time, the door cover 92 is in the fully closed position S2, and the plate-like portion 933 continuously abuts against the drum assembly 2, so that the developing cartridge 1 keeps the position where the existing storage medium 52 contacts the electrical terminal unchanged, and the developing cartridge 1 works normally.

[0195] Further, in this embodiment, the protruding portion 214 can be integrally formed with the drum assembly 2 or can be provided in a split manner, as long as the protruding portion 214 has no displacement relative to the drum assembly 2 in the third direction. The specific structure is not limited too much here.

[0196] Furthermore, in this embodiment, two connecting rods 93 are provided along the first direction, and the second one is provided near the second wall 22 of the drum assembly 2. Therefore, in other embodiments, the protruding portion 214 can be provided on the second wall 22 of the drum assembly 2 in the first direction. The specific setting position is not limited too much here.

[0197] By providing the protruding portion 214 on the drum assembly 2 and when the door cover 92 closes and drives the connecting rod 93 to move, by abutting against the plate-like portion 933 on the connecting rod 93, the drum assembly 2 and the developing cartridge 1 move relative to the image forming apparatus together, thereby achieving the purpose of connecting the storage medium 52 to the electrical terminal. Such a setting does not require a component for moving the chip relative to the cartridge body on the side wall of the developing cartridge 1, simplifies the structure of the developing cartridge 1, and this implementation manner is simple and the structure is concise.

[0198] Embodiment Seven

[0199] The difference between this embodiment and Embodiment Four is that the lifting structure setting method is different. Instead of providing the protruding portion 214 on the drum assembly 2, an external peripheral portion 70 that can be snap-connected to the door cover 92 is provided separately and abuts against the drum assembly 2, so as to achieve the purpose of driving the drum assembly 2 to drive the developing cartridge 1 to move relative to the image forming apparatus in the third direction. The rest of the structure is exactly the same as that of Embodiment Three.

[0200] Such as Figure 49 、 Figure 50As shown, the peripheral part 70 is fixed on the door cover 92 by snapping, and when the door cover 92 rotates and closes from the open position S1 to the closed position S2 along the closing trajectory M1, the peripheral part 70 on the door cover 92 abuts against the drum assembly 2. When the peripheral part 70 abuts against the drum assembly 2, a second component force F2 upward in the third direction is generated on the drum assembly 2. Under the action of the second component force F2, the drum assembly drives the developing box 1 to move relative to the image forming device, so that the electrical contact surface 53 is connected to the electrical terminal, and the storage medium 52 is electrically connected to the image forming device. When the door cover 92 is in the fully closed closing position S2, the peripheral part 70 continues to abut against the drum assembly 2, so that the developing box 1 maintains the existing storage medium 52 in contact with the electrical terminal, and the developing box 1 works normally.

[0201] Further, such as Figure 50 As shown, the peripheral part 70 can also be arranged on the drum assembly 2, and abut against the door cover 92 when the door cover 92 is closed, so as to achieve the purpose of lifting the drum assembly 2 and the developer box 1.

[0202] Furthermore, the peripheral part can be in a block shape or a plate shape, and similarly the peripheral part can also be a group of parts, as long as it is fixed on the drum assembly 2 and / or the door cover 92 so that the drum assembly 2 can move relative to the image forming device when the door cover 92 is closed, and the electrical terminal is in contact with the storage medium 52, no excessive restrictions are made here.

[0203] The peripheral part 70 is a peripheral component relative to the drum assembly or the door cover 92, and can be installed and fixed to the drum assembly 2 or the door cover 92 in a detachable manner.

[0204] By providing an external part to lift the drum assembly, the chip on the developer box is brought into contact with the electrical terminal, which simplifies the structure of the developer box and reduces the manufacturing cost of the developer box 1. At the same time, one external part can be reused multiple times and has a simple structure and is easy to use.

[0205] Furthermore, in the present invention, the bracket 51 and the first protective cover 111 are integrally formed, and the lifting structure is disposed in the bracket 51, and the purpose of lifting the developing box 1 is achieved by abutting against the bracket 51. In other embodiments, the bracket 51 can also be disposed separately from the first protective cover 111, as long as the bracket 51 is not displaced relative to the developing box, or the lifting structure is not disposed in the bracket 51, but is disposed separately on the first protective cover 111, as long as it can abut against the connecting rod, or the bracket 51 is integrally formed / split and disposed at the first end 11 of the box body 10, and the lifting structure and the bracket 51 can cooperate to lift the developing box, and the specific implementation is not further limited here.

[0206] Furthermore, in the present utility model, the second component force F2 is the same as the lifting force F4, that is, as long as the force that causes the drum assembly and / or the developing cartridge to move relative to the image forming apparatus is upward along the third direction, the specific direction is not specifically limited herein.

[0207] By providing a lifting structure, when the door is closed, the developing cartridge and / or the drum assembly can be moved relative to the image forming apparatus, so that the chip contacts the electrical terminal, and the image forming apparatus can identify the developing cartridge. There is no need to provide a chip holder assembly on the developing cartridge that enables the chip to move relative to the cartridge body, reducing the number of components of the developing cartridge and lowering the manufacturing cost of the developing cartridge. Moreover, the lifting structure of the present utility model has a simple structure and is convenient to use.

[0208] Embodiment VIII:

[0209] Except for special instructions, the structure of the developing cartridge in this embodiment is the same as that in Embodiment III. The main difference feature in this embodiment is the setting of the first cartridge pushing member 113. The first cartridge pushing member 113 is no longer located between the rotation axis of the power receiving portion 40 and the rotation axis of the stirring gear 45.

[0210] As Figure 51 、 Figure 52 shown, the drum assembly 2 further includes a force receiving surface 215. The force receiving surface 215 is located on the inner surface of the first wall 21. The force receiving surface 215 is a plane and faces the photosensitive drum 25.

[0211] The first cover 111 is provided with an installation portion 1111. The installation portion 1111 is a groove recessed along the second direction. The installation portion 1111 is provided with a guiding member 1112 extending along the second direction. The guiding member 1112 is a strip-shaped through hole or blind hole. In this embodiment, it is preferably a through hole. The first cartridge pushing member 113 includes a third force applying member 223 and a third force applying elastic member 224. The third force applying member 223 is movably installed on the installation portion 1111. The third force applying member 223 includes a guided member 2231 and a force receiving surface 2232. The guided member 2231 is in the shape of a pawl that cooperates with the guiding member 1112. The guided member 2231 can move along the extending direction of the guiding member 1112. The force receiving surface 2232 is the surface of the third force applying member 223 facing away from the developing roller 131. Along the second direction, the third force applying member 223 is located behind the rotation axis of the stirring gear 45. The third force applying elastic member 224 is located in the installation groove 37. It is abutted by the third force applying member 223 and the inner wall of the installation groove 37, and can be compressed and extended along the second direction. The third force applying elastic member 224 can be an elastic medium such as a compression spring or sponge.

[0212] When the developing cartridge 1 is installed on the drum unit, the force-receiving surface 2232 of the third biasing member 223 is abutted by the force-applying surface 26 on the drum unit. The force-applying surface 26 applies a pushing force to the third biasing member 223 to move it in the second direction towards the photosensitive drum, causing the third biasing member 223 to move towards the photosensitive drum, and the third biasing elastic member 224 to be compressed. The third biasing member 223 transmits the pushing force to the cartridge body 10, causing the entire cartridge body to have a tendency to move towards the photosensitive drum, and further causing the developing roller 131 to be in close contact with the photosensitive drum. Its function is exactly the same as that of the first biasing member 212 at the first wall 21 in the first direction of the drum unit 2, except that it is provided on the first cover 111, and will not be elaborated here.

[0213] The above are only some embodiments of the present invention. For those of ordinary skill 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 freely combining the technical features between the above different embodiments, and these all fall within the protection scope of the present invention.

Claims

1. A developing cartridge that can be combined with a drum unit to form a processing cartridge and is detachably mounted in an image forming apparatus along an installation direction, the image forming apparatus being provided with an electrical terminal and a blocking structure, characterized in that, The developing box comprises: A box body, for containing a developer, having a first end and a second end in a first direction, a third end and a fourth end in a second direction, and a fifth end and a sixth end in a third direction; a developing roller that rotates about an axis extending in a first direction; a power receiving portion, for receiving a driving force from the image forming device, located at the first end; an electrode, electrically connected to the developing roller and located at the second end; a storage medium storing information of the developing cartridge; and An electrical contact surface, electrically connected to the storage medium; The developing box can cooperate with the image forming device so that the electrical contact surface is lifted upward relative to the image forming device together with the developing box, so that the electrical contact surface is electrically connected with the electrical terminal.

2. The developing cartridge according to claim 1, wherein, The developing box also includes a lifting structure. When the developing box moves along the installation direction over the blocking structure until the electrical contact surface is located below the electrical terminal, the lifting structure receives the force from the image forming device to drive the developing box to be lifted in a third direction relative to the image forming device.

3. The developing cartridge according to claim 2, wherein, The lifting structure is located at the fourth end, the image forming device includes a door cover, and when the developing box is installed on the image forming device, the lifting structure cooperates with the door cover to lift the developing box in the third direction.

4. The developing cartridge according to claim 3, wherein, The lifting structure includes a contact portion, and the door cover includes a lifting portion. When the door cover is fully closed, the line between the contact point between the lifting portion and the contact portion and the rotation axis of the power receiving portion is defined as L1, and the normal line between the rotation axis of the power receiving portion and the door cover is L2. The angle between L1 and L2 is a first angle A1, and the value range of A1 is 12°~16.5°.

5. The developing cartridge according to claim 4, wherein, When the door cover is completely closed, the distance between the contact point between the lifting portion and the contact portion and the projection of the rotation axis of the power receiving portion in the first direction is in the range of 110 mm to 118 mm.

6. The developing cartridge according to claim 2, wherein The lifting structure includes an elastic member and a supporting member, one end of the elastic member is connected to the supporting member, and the other end is connected to the box body, and the supporting member is used to cooperate with the image forming device to lift the developing box in a third direction relative to the image forming device.

7. The developing cartridge according to claim 6, wherein, The image forming device has a track, the track has a lower track and an upper track, the electric terminal and the blocking structure are located on the upper track, and the blocking structure is located behind the electric terminal in the second direction; When the developing box is installed on the image forming device along the track, the supporting member contacts the lower track, the blocking structure interferes with the electrical contact surface, and the developing box is forced to move downward, and the elastic member is compressed; When the electrical contact surface passes over the blocking structure and is located below the electrical terminal in the third direction, the elastic member releases the elastic force to lift the developing box upward, and the electrical contact surface forms an electrical connection with the electrical terminal.

8. The developing cartridge according to claim 7, wherein, When the elastic member interferes with the blocking structure at the electrical contact surface, the length of the elastic member in the third direction is C1. When the electrical contact surface crosses the blocking structure and is electrically connected to the electrical terminal, the length of the elastic member in the third direction is C2. The value range of the difference between C2 and C1 is 2.1 mm to 4.1 mm.

9. The developing cartridge according to claim 8, wherein, In the first direction, the distance between the electrical contact surface and the first end is greater than the distance between the support member and the first end; The value range of the difference between the distances from the electrical contact surface and the support member to the first end is 6 mm to 12 mm.

10. The developing cartridge according to claim 8, wherein The value range of the distance between the electrical contact surface and the projection of the rotation axis of the power receiving portion in the first direction is 51 mm to 58 mm; The value range of the distance between the support member and the projection of the rotation axis of the power receiving portion in the first direction is 42 mm to 68 mm.

11. The developing cartridge according to claim 8, characterized in that, The developing cartridge further includes a first cartridge pushing member and a second cartridge pushing member. In the first direction, the first cartridge pushing member is closer to the first end than the second cartridge pushing member. In the third direction, the size of the first cartridge pushing member is smaller than the size of the second cartridge pushing member; The value range of the difference in the sizes of the first cartridge pushing member and the second cartridge pushing member in the third direction is 2 mm to 4.5 mm.

12. The developing cartridge according to claim 7, wherein, The image forming apparatus further includes a door and a link associated with the door. When the door is closed, the link acts on the support member to force the support member to drive the developing cartridge to lift upward.

13. The developing cartridge according to claim 12, wherein The developing cartridge further includes a bracket, and the bracket is fixedly connected to the cartridge body; The support member includes a first movable portion and a second movable portion. A first inclined surface is provided on the first movable portion. The link converts the acting force in the third direction into an acting force in the first direction by acting on the first inclined surface, thereby causing the first movable portion to move in the first direction; A second inclined surface is provided on the first movable portion or the second movable portion. The first movable portion causes the second movable portion to move in the third direction through the second inclined surface, forcing the second movable portion to abut against the bracket, and then driving the developing cartridge to lift upward.

14. The developing cartridge according to claim 13, wherein The elastic member includes a first elastic member and a second elastic member. The first movable portion is movably provided on the bracket, and the two ends of the first elastic member are respectively connected to the first movable portion and the bracket; The second movable portion is movably provided on the bracket, and the two ends of the second elastic member are respectively connected to the second movable portion and the bracket; When the first movable portion moves in the first direction, the first elastic member is compressed. When the second movable portion moves upward, the second elastic member is compressed. The first elastic member enables the first movable portion to move back and forth in the first direction. The second elastic member applies an elastic force in the third direction to the developing cartridge through the bracket, causing the developing cartridge to lift upward.

15. The developing cartridge according to claim 12, wherein The support member includes a first movable portion, a third inclined surface and a fourth inclined surface are provided on the first movable portion, and the elastic member includes a first elastic member; A blocking portion is provided on the side wall of the image forming apparatus. When the developing cartridge is installed in the image forming apparatus, the blocking portion interferes with the third inclined surface, forcing the first movable portion to move in the first direction and compressing the first elastic member; When the electrical contact surface is located below the electrical terminal in the third direction, the first elastic member resets, and the first movable portion moves in the first direction in the reset direction of the first elastic member.

16. The developing cartridge according to claim 15, characterized in that, When the developing cartridge is in a position where the electrical contact surface is located below the electrical terminal in the third direction, in the second direction, at least a part of the projection of the first movable portion overlaps with the blocking portion.

17. The developing cartridge according to claim 1, wherein, The developing cartridge is configured to be able to lift relative to the drum assembly in the third direction, so that the electrical contact surface forms an electrical connection with the electrical terminal; The range of the lifting distance of the developing cartridge relative to the drum assembly in the third direction is 1 mm to 6 mm.

18. The developing cartridge according to claim 2, wherein, When the developing cartridge is installed, the electrical contact surface abuts against the blocking structure and is squeezed by the blocking structure. After the electrical contact surface passes over the blocking structure, it forms an electrical connection with the electrical terminal; Taking the plane where the electrical contact surface is located as the fourth plane, and taking the plane passing through the rotation axis of the power receiving portion and parallel to the fourth plane as the fifth plane, the range of the height difference between the fourth plane and the fifth plane in the third direction is 33 mm to 36 mm.

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