Developing box

Abstract

The utility model discloses a developing box which comprises a box body, wherein the box body is provided with a first end and a second end in a first direction, is provided with a third end and a fourth end in a second direction, and is provided with a fifth end and a sixth end in a third direction; the first stress part is located at the first end, is in contact with the first force application piece and receives a first acting force, and the acting direction of the first acting force faces the developing roller in the second direction; the second stress part is located at the first end, makes contact with the first force application piece and receives second acting force, the acting direction of the second acting force intersects with the second direction and the third direction, the second acting force has upward component force in the third direction, and the second stress part enables the first end to move in the third direction. According to the scheme, the first end of the developing box moves in the third direction to avoid an interference part of the image forming device in the mounting process of the developing box, so that the structure of the developing box is simplified, and stable contact between the electric contact surface and the electric contact pin can be ensured.

Description

Technical Field

[0001] This utility model relates to an image forming apparatus, and more particularly to a developing cartridge. Background Technology

[0002] A developer cartridge is a detachable component widely used in image forming apparatuses. The developer cartridge contains a storage medium storing information about the cartridge. When the cartridge is installed on the image forming apparatus, the storage medium transmits this information to the apparatus, enabling it to recognize the cartridge. In existing technology, the storage medium and its supporting bracket are movable relative to the cartridge body. This allows the storage medium to avoid interference components within the image forming apparatus during installation, ensuring smooth installation and stable contact between the storage medium's electrical contact surface and the apparatus's electrical contacts. However, this structure is not conducive to simplifying the cartridge's structure and reducing production costs. Utility Model Content

[0003] According to one aspect of the present invention, a developing cartridge is provided, detachably mounted on a drum assembly of an image forming apparatus, the drum assembly having a movable first force-applying member, the developing cartridge comprising:

[0004] The box body has a first end and a second end that are arranged opposite each other in a first direction, a third end and a fourth end that are arranged opposite each other in a second direction, and a fifth end and a sixth end that are arranged opposite each other in a third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0005] The developing roller, located at the third end, rotates about a developing axis extending in the first direction;

[0006] A drive unit, located at the first end, rotates about a drive axis extending in a first direction;

[0007] The storage medium includes an electrical contact surface located at the first end;

[0008] The first force-receiving part is located at the first end, contacts the first force-applying member and receives the first force, and the direction of the first force is toward the developing roller in the second direction.

[0009] The second force-receiving part is located at the first end, contacts the first force-applying member and receives the second force. The extension directions of the first force-receiving part and the second force-receiving part intersect. The direction of action of the second force intersects the second direction and the third direction. The second force has an upward component in the third direction. The second force-receiving part causes the first end to move upward in the third direction.

[0010] In some embodiments, the second force-receiving part extends rearward in the second direction and upward in the third direction, and the angle between the extension direction of the second force-receiving part and the second direction is 20° to 60°.

[0011] In some embodiments, in the third direction, the first force-bearing portion is at least partially located below the second force-bearing portion.

[0012] In some embodiments, in the second direction, the first force-receiving portion is at least partially located behind the second force-receiving portion.

[0013] In some embodiments, the extension length of the second force-bearing part is 5mm to 15mm.

[0014] According to one aspect of the present invention, another developing cartridge is provided, detachably mounted on an image forming apparatus, the image forming apparatus including a lower rail portion, the developing cartridge comprising:

[0015] The box body has a first end and a second end that are arranged opposite each other in a first direction, a third end and a fourth end that are arranged opposite each other in a second direction, and a fifth end and a sixth end that are arranged opposite each other in a third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0016] The developing roller, located at the third end, rotates about a developing axis extending in the first direction;

[0017] A drive unit, located at the first end, rotates about a drive axis extending in a first direction;

[0018] The storage medium includes an electrical contact surface located at the first end;

[0019] A lifting member is located at the first end. The lifting member is an elastic member. The lifting member contacts the lower rail and generates elastic deformation, causing the first end to move upward in a third direction.

[0020] In some embodiments, the lifting element is a torsion spring.

[0021] In some embodiments, the lifting member is located below the electrical contact surface in a third-party direction.

[0022] In some embodiments, the lifting member includes a first abutment portion, the extension direction of which is inclined relative to the second direction and the third direction, and the first abutment portion contacts the lower rail portion.

[0023] In some embodiments, the lifting member further includes a second abutment portion, wherein the first abutment portion and the second abutment portion are respectively located at two ends of the lifting member, and in a second direction the first abutment portion is further away from the developing roller than the second abutment portion.

[0024] The beneficial effects of this utility model are as follows: This solution simplifies the structure of the developing cartridge by causing the first end of the developing cartridge to move in the third direction to avoid interference components of the image forming device during the installation of the developing cartridge, and also ensures that the electrical contact surface can make stable contact with the electrical contact pin. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the developing cassette and drum assembly combined with the sidewall in Embodiment 1;

[0026] Figure 2 This is a partial exploded view of the drum assembly in Embodiment 1;

[0027] Figure 3 This is a schematic diagram of the developing cartridge in Example 1;

[0028] Figure 4 This is a structural schematic diagram of the developing cartridge from another angle in Embodiment 1;

[0029] Figure 5 This is an exploded view of the first end in Embodiment 1;

[0030] Figure 6 This is a schematic diagram of the structure of the first protective cover in Embodiment 1;

[0031] Figure 7 This is a schematic diagram of the structure in Embodiment 1 where the guide rail abuts against the developing cartridge;

[0032] Figure 8 This is a cross-sectional view of the developing cartridge in the second position in Embodiment 1;

[0033] Figure 9 This is a schematic diagram of the developing cartridge installed in the image forming apparatus in Embodiment 1;

[0034] Figure 10 This is a cross-sectional view of the developing cartridge located in the first position in Embodiment 1;

[0035] Figure 11 This is an exploded view of the first end in Embodiment 2;

[0036] Figure 12 This is a schematic diagram of the developing cartridge in Example 2;

[0037] Figure 13 This is a schematic diagram of the structure of the support and lifting components in Embodiment 2;

[0038] Figure 14 This is a cross-sectional view of the developing cassette in the image forming apparatus before the lifting component makes contact, as shown in Embodiment 2.

[0039] Figure 15 This is a cross-sectional view of the lifting member being abutted when the developing cassette is installed in the image forming apparatus in Embodiment 2;

[0040] Figure 16 This is a cross-sectional view of the developing cartridge fully installed in the image forming apparatus in Embodiment 2. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] It should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In the above description, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] For ease of description, this specification uses the left-right direction indicated in the attached drawings as the first direction, the front-back direction indicated in the attached drawings as the second direction, and the up-down direction indicated in the attached drawings as the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0047] Example 1

[0048] like Figures 1-10 As shown, this embodiment provides a developing cartridge 1, which can be detachably mounted on a drum assembly 2. The developing cartridge 1 and the drum assembly 2 are jointly mounted to an image forming apparatus. The image forming apparatus includes a side wall 90, on which a guide rail 91 is provided for the passage of the developing cartridge 1 and the drum assembly 2. The guide rail 91 is bent in the mounting direction (second direction) of the developing cartridge 1 and the drum assembly 2. The guide rail 91 includes an upper rail portion 91a and a lower rail portion 91b, both of which have protrusions protruding in a third direction. An electrical contact pin 92 is also provided at the side wall 90. The electrical contact pin 92 is retractable in a third direction. The electrical contact pin 92 is located in a groove in the upper rail portion 91a. In the path of the developing cartridge 1 to the image forming apparatus (second direction), the electrical contact pin 92 is located in front of the protrusions in the upper rail portion 91a and the lower rail portion 91b. In the third direction, the lowest end of the electrical contact pin 92 is located above the lowest end of the protrusions. During the installation of the developing cartridge 1 and the drum assembly 2, the developing cartridge 1 and the drum assembly 2 first pass through the protrusion on the guide rail 91 and then through the electrical contact pin 92.

[0049] like Figure 2As shown, the drum assembly 2 includes a frame 20 for supporting the developing cartridge 1. The frame 20 includes a first sidewall 201 and a second sidewall 202 disposed opposite each other in a first direction. The drum assembly 2 also includes a photosensitive drum (not shown) that receives developer from the developing cartridge 1. The photosensitive drum is rotatably supported by the frame 20. The drum assembly 2 also includes a force-applying component for applying a force to the developing cartridge 1 in a second direction. The force-applying component includes a first force-applying member 21 and a second force-applying member 22. The first force-applying member 21 and the second force-applying member 22 have the same structure. The first force-applying member 21 is provided with a first abutment surface 211 and a second abutment surface 212. The extension direction of the first abutment surface 211 is generally upward in a third direction. The extension direction of the second abutment surface 212 intersects the third direction. The second abutment surface 212 extends forward in the second direction and downward in a third direction. The frame 20 is provided with a first mounting position 203 and a second mounting position 204. In the first direction, the two are respectively located close to the first side wall 201 and the second side wall 202. The first force-applying member 21 is movably mounted on the first mounting position 203, and the second force-applying member 22 is movably mounted on the second mounting position 204.

[0050] like Figure 2 As shown, the force-applying component also includes a first elastic element 213 and a second elastic element 214. The first elastic element 213 and the second elastic element 214 are preferably compression springs. The first elastic element 213 is located between the first force-applying element 21 and the side wall of the first mounting position 203, and the second elastic element 214 is located between the side wall of the second force-applying element 22 and the second mounting position 204. The first elastic element 213 and the second elastic element 214 provide the first force-applying element 21 and the second force-applying element 22 with a forward force in the second direction, respectively. When the first force-applying element 21 and the second force-applying element 22 move backward in the second direction relative to the first mounting position 203 and the second mounting position 204, respectively, the first elastic element 213 and the second elastic element 214 are compressed and have an elastic force.

[0051] like Figure 3 and Figure 4As shown, the developing cartridge 1 includes a cartridge body 10, a developing assembly, a transmission assembly, a pushing assembly, and an identification assembly. The cartridge body 10 stores developer. The cartridge body 10 has a first end 11 and a second end 12 oppositely arranged in a first direction, a third end 13 and a fourth end 14 oppositely arranged in a second direction, and a fifth end and a sixth end oppositely arranged in a third direction. A handle 141 is provided on the cartridge body 10, located at the fourth end 14, facilitating the user to pick up the developing cartridge 1. The transmission assembly is located at the first end 11 and receives power output from the image forming apparatus, transmitting the power to components in the developing assembly. A first cover 31 is detachably fixed to the first end 11 by screws and clips, at least partially covering the transmission assembly and protecting it. A second cover 121 is detachably fixed to the second end 12 of the cartridge body 10 by screws and clips.

[0052] The developing assembly includes a developing roller 131, a stirring frame (not shown), and a powder delivery roller (not shown), all of which are rotatably supported by a first end 11 and a second end 12. The rotation axes (developing axis, stirring axis, and powder delivery axis) of the developing roller 131, stirring frame, and powder delivery roller all extend in a first direction. The powder delivery roller is disposed adjacent to the developing roller 131 and delivers developer to the developing roller 131, which in turn delivers developer to the photosensitive drum. The developing roller 131 includes a roller body and a roller shaft, the roller shaft driving the roller body to rotate. The roller body is used to absorb developer. The stirring frame is used to stir the developer within the cartridge 10, creating friction and preventing developer agglomeration. The developing assembly also includes a powder exit blade 133, which contacts the developing roller 131 to control the thickness of the developer layer on the developing roller 131. In one embodiment, the stirring frame may be omitted.

[0053] like Figure 5 As shown, a transmission assembly is disposed at the first end 11. The transmission assembly includes a drive unit rotatably mounted on the first end 11. The rotation axis (drive shaft) of the drive unit extends in a first direction. The drive unit includes a coaxially integrally formed drive gear 402 and a power receiving unit 401. The drive gear 402 is closer to the sidewall of the first end 11 in the first direction than the power receiving unit 401. The power receiving unit 401 is used to connect with the power output shaft on the image forming apparatus to receive the power output by the image forming apparatus.

[0054] like Figure 5As shown, the transmission assembly 4 also includes a developing gear 41, a powder feeding gear 42, an idler gear 44, and a stirring gear 43. The developing gear 41 and the powder feeding gear 42 both mesh with the drive gear 402 to receive power and rotate. The idler gear 44 meshes with the drive gear 402 and the stirring gear 43 to transmit power from the drive gear 402 to the stirring gear 43, causing the stirring gear 43 to rotate. The developing gear 41 is coaxially fixedly mounted on one end of the developing roller 131 located at the first end 11 and drives the developing roller 131 to rotate. The powder feeding gear 42 is coaxially fixedly mounted on one end of the powder feeding roller located at the first end 11 and drives the powder feeding roller to rotate. The stirring gear 47 is coaxially fixedly mounted on one end of the stirring frame located at the first end 11 and drives the stirring frame to rotate. This embodiment does not limit the number of gears or their meshing relationship in the transmission assembly; it can be set according to actual needs.

[0055] like Figure 3 As shown, the developing cartridge 1 also includes an electrode 122 for receiving external voltage. The electrode 122 is electrically connected to at least one of the developing roller 131 and the powder feeding roller to transmit voltage. In this embodiment, the electrode is preferably a conductive steel sheet; in other embodiments, it can be a conductive element of other materials. In one embodiment, the electrode 122 may be in contact with the roller shaft of the developing roller to transmit voltage, with an electrical connection between the roller body and the roller shaft. In another embodiment, the roller shaft and the roller body are insulated from each other, and the electrode 122 is directly or indirectly electrically connected to the roller body through an intermediate conductive element, which may be a powder discharge blade 133, a conductive spring, or a powder feeding roller.

[0056] like Figures 3-5 As shown, the identification component is located at the first end 11. The identification component includes a bracket 111 and a storage medium 112. The bracket 111 is provided with a first mounting groove 1111. The storage medium 112 is installed in the first mounting groove 1111 by snap-fit. In some embodiments, the storage medium 112 can also be installed on the bracket 111 by adhesive or other means. The storage medium 112 stores information about the developing cartridge 1. The storage medium 112 includes an electrical contact surface 1121 electrically connected to it. The storage medium 112 and the electrical contact surface 1121 are preferably integrally formed. In other embodiments, they can also be separate components. When the developing cartridge 1 is installed in the image forming apparatus, the electrical contact surface 1121 contacts the electrical contact pin 92, so that the storage medium 112 transmits information to the image forming apparatus, thereby enabling the image forming apparatus to identify the developing cartridge 1.

[0057] like Figures 3-6As shown, the first cover 31 is provided with a first hole 311 and a second mounting groove 312. The first hole 311 is a through hole in a first direction, used to expose the power receiving part 401 so that the power receiving part 401 can receive external power. The second mounting groove 312 is located near the rear end of the first cover 31 and has an opening in a third direction. The bracket 111 is fixedly connected to the second mounting groove 312 by a snap-fit ​​method. In some embodiments, it can also be connected by a screw. In this embodiment, it is preferred that the bracket 111 and the storage medium 112 cannot move relative to the housing 10. In some embodiments, the storage medium 112 or the electrical contact surface 1121 can move relative to the housing 10 in a third direction.

[0058] like Figure 4 and Figure 6 As shown, the developing cartridge 1 also includes a pushing assembly for receiving the force applied by the force-applying assembly to ensure close contact between the developing roller 131 and the photosensitive drum. The pushing assembly includes a first pushing member 310 and a second pushing member 1211 located at the first end 11 and the second end 12, respectively. The first pushing member 310 and the second pushing member 1211 abut against the first force-applying member 21 and the second force-applying member 22, respectively. The first pushing member 310 is disposed at the rear end of the first cover 31 and protrudes outward relative to the first cover 31, and the second pushing member 1211 is disposed at the rear end of the second cover 121 and protrudes outward relative to the second cover 121. In some embodiments, the first pushing member 310 and the second pushing member 1211 may be disposed on the cartridge body 10.

[0059] like Figure 4 and Figure 6 As shown, the first pushing member 310 includes a first force-receiving part 313 and a second force-receiving part 314. In this embodiment, the first force-receiving part 313 and the second force-receiving part 314 are preferably integrally formed with the first cover 31 to simplify the components and assembly of the developing cartridge 1. In other embodiments, they can be separate components. In the third direction, the first force-receiving part 313 is at least partially located below the second force-receiving part 314. In the second direction, the first force-receiving part 313 is at least partially located behind the second force-receiving part 314. The extension directions of the first force-receiving part 313 and the second force-receiving part 314 intersect. The second force-receiving part 314 extends rearward in the second direction and upward in the third direction. The extension direction of the second force-receiving part 314 and the second direction form an angle A, the size of which is 20°~60°, and preferably 35° in this embodiment. Further, the extension length of the second force-receiving part 314 is 5mm~15mm, and preferably 8.5mm in this embodiment. In some embodiments, the second force-receiving part 314 may have a certain degree of elasticity.

[0060] like Figure 8 and Figure 10As shown, the first force-receiving part 313 contacts the first abutting surface 211 to receive the first force F1. The first force F1 causes the first force-receiving part 313 to move forward in the second direction or has a tendency to move forward. That is, the first force F1, through the first force-receiving part 313 and the first cover 31, causes the first end 11 to have a forward force in the second direction. The second force-receiving part 314 contacts the second abutting surface 212 to receive the second force F2. The second force F2 causes the second force-receiving part 314 to move forward in the second direction and upward in the third direction. That is, the second force F2 has components in the second direction and the third direction, and through the second force-receiving part 314 and the first cover 31, causes the first end 11 to have a forward force in the second direction and an upward force in the third direction. In other words, at least the first end 11 receives the first force F1 and the second force F2 and produces corresponding movement or has a tendency to move. The first force F1 and the second force F2 can also be transmitted to the box body 10 through the first cover 31. That is, the second force-bearing part 314 can be regarded as a lifting member that receives external force and causes the first end 11 to move upward in the third direction.

[0061] like Figure 4 As shown, in this embodiment, the second pushing member 1211 only receives the forward force applied by the second force-applying member 22 in the first direction. That is, in this embodiment, the structures of the first pushing member 310 and the second pushing member 1211 are at least partially different. In some embodiments, the second pushing member 1211 may have the same structure as the first pushing member 310 and receive the first force F1 and the second force F2.

[0062] like Figures 7-10 As shown, the developing cartridge 1 is mounted on the drum assembly 2. The developing cartridge 1 is movable relative to the drum assembly 2 and has a first position and a second position. When the developing cartridge 1 is in the first position, the first force-bearing part 313 and the second force-bearing part 314 are in contact with the first abutment surface 211 and the second abutment surface 212, respectively. When the developing cartridge 1 is in the second position, only the second force-bearing part 314 is in contact with the second abutment surface 212. When the developing cartridge 1 and the drum assembly 2 are located outside the image forming apparatus, the developing cartridge 1 is in the first position. During the process of the developing cartridge 1 and the drum assembly 2 being installed together into the image forming apparatus, the developing cartridge 1 changes between the first position and the second position.

[0063] During the process of mounting the developing cartridge 1 and the drum assembly 2 together generally along the second direction to the image forming apparatus, the protrusion on the guide rail 91 (upper rail portion 91a) is located on the mounting path of the developing cartridge 1 and the drum assembly 2 and interferes with the mounting of the developing cartridge 1 and the drum assembly 2. The protrusion abuts against the bracket 111 or the storage medium 112, thereby applying a third-party upward and downward abutting force to the first end 11 of the cartridge body 10, causing the first end 11 to move upward and downward in the third-party direction to avoid the protrusion of the upper rail portion 91a. At this time, the second force receiving portion 314 applies a reaction force F3 to the second abutting surface 212. The reaction force F3 has a backward component in the second direction, so that the first force applying member 21 moves backward in the second direction, thereby making room for the first end 11 to move downward. The first elastic member 213 is further compressed, and the developing cartridge 1 is located in the second position.

[0064] As the developing cartridge 1 and drum assembly 2 continue to be installed, the bracket 111 or storage medium 112 passes over the protrusion of the guide rail 91 (upper rail portion 91a), the first end 11 loses its downward abutment force, the first elastic member 213 releases its elastic force, causing the first force-applying member 21 to move forward in the second direction, the first abutment surface 211 contacts the first force-receiving portion 313, the second abutment surface 212 contacts the second force-receiving portion 314, and the first force-applying member 21 applies a first force F1 and a second force F2 to the first end 11 to make the first end 11 move upward, and the developing cartridge 1 is located in the first position.

[0065] When the developing cartridge 1 and the drum assembly 2 are installed in place, the electrical contact surface 1211 contacts the electrical contact pin 92, and the developing cartridge 1 is held in the first position. The first force F1 and the second force F2 of the first force application member 21 cause the developing cartridge 1 to have a forward tendency in the second direction, so that the developing roller 131 is in close contact with the photosensitive drum. The upward component of the second force F2 in the third direction can also make the electrical contact surface 1211 press against the electrical contact pin 92 upward.

[0066] In this embodiment, the first force-applying member 21 on the drum assembly 2 is used to provide a first force-receiving part 313 and a second force-receiving part 314 on the developing cartridge 1, so that the developing cartridge 1 can move relative to the drum assembly 2 during the installation process to avoid interference parts in the image forming apparatus. This simplifies the structure of the developing cartridge 1 and ensures that the electrical contact surface 1211 can make stable contact with the electrical contact pin 92.

[0067] Example 2

[0068] Unless otherwise specified, the structure of the developing chamber in this embodiment is the same as that in Embodiment 1. The difference in this embodiment is that the structure of the lifting member is different.

[0069] like Figure 12As shown, in this embodiment, the first pusher 315 only has a first force-receiving part, and its structure is the same as that of the second pusher 1211. It is a protruding structure that is set at the rear end of the first cover 31 and protrudes outward relative to the first cover 31. The first pusher 315 only receives the force (pushing force) of the first force-applying member 21 in the second direction to make the developing roller 131 stick tightly to the photosensitive drum.

[0070] like Figure 11 and Figure 12 As shown, in this embodiment, the lifting member 35 is disposed at the first end 11. The lifting member 35 is used to cause the entire developing cartridge 1 to move. In this embodiment, the lifting member 35 is preferably an elastic member, and more preferably a hyperbolic torsion spring to have a more stable elastic force. In other embodiments, the lifting member 35 can be a sponge or a compression spring, etc., that can cause the cartridge 10 to move. In the third direction, the lifting member 35 is located below the support 111.

[0071] like Figures 11 to 13 As shown, a support member 34 is also provided at the first end 11. The support member 34 includes a connecting hole 341 and a support post 342. The first cover 31 also includes a connecting post 316 extending in the first direction. The connecting hole 341 and the connecting post 316 are fixedly connected by a shaft hole connection so that the first cover 31 and the support member 34 are connected. Fasteners such as screws can also be used to make the connection more stable. In some embodiments, the support member 34 can be directly connected to the housing 10. The support post 342 is a protrusion extending in the first direction, preferably cylindrical. The lifting member 35 includes a first abutment portion 351, a second abutment portion 352, and a mounting portion 353. The first abutment portion 351 and the second abutment portion 352 are located at the two ends of the lifting member 35, respectively. The mounting portion 353 is located between the first abutment portion 351 and the second abutment portion 352 and is in the shape of a circular hole. A support column 342 is inserted into the mounting portion 353 to support the lifting member 35. The first abutment portion 351 is at least partially exposed outside the support member 34 and abuts against the external component, thus elastically deforming. The second abutment portion 352 is at least partially covered by the support member 34 and abuts against the support member 34 so that the first abutment portion 351 can accumulate elastic force. That is, the second abutment portion 352 has a limiting function so that the first abutment portion 351 undergoes elastic deformation rather than displacement after abutting against the external component. The extension direction of the first abutment portion 351 is inclined relative to the second direction and the third direction. Before abutting with an external component, the first abutment portion 351 extends backward in the second direction and downward in the third direction. In the second direction, the first abutment portion 351 is further away from the developing roller 131 than the second abutment portion 352.

[0072] like Figures 14-16As shown, during the process of installing the developing cartridge 1 onto the drum assembly 2 and within the image forming apparatus, the first abutment portion 351 may initially not contact the lower rail portion 91b, or it may make slight contact with the lower rail portion 91b. As the developing cartridge 1 continues to be installed along the installation path (second direction), at least one of the storage medium 112 and the electrical contact surface 1121 contacts the protrusion of the upper rail portion 91a. That is, the protrusion of the upper rail portion 91a blocks the developing cartridge 1 from continuing to be installed along the installation path, and the protrusion of the upper rail portion 91a abuts against the storage medium 112. At this time, in order for the developing cartridge 1 to continue to be installed along the installation path, at least the first end 11 moves downward to avoid the protrusion. The first abutment portion 351 abuts against the lower rail portion 91b and undergoes elastic deformation and accumulates elastic force. The height of the first abutment portion 351 in the third direction is reduced to make room for the downward movement of the first end 11.

[0073] As the developing cartridge 1 continues to be installed along the installation path, the storage medium 1121 and the electrical contact surface 1121 pass over the protrusion of the upper rail portion 91a and are positioned below the electrical contact pin 92. A gap exists between the electrical contact pin 92 and the electrical contact surface 1121 in the third-order direction. At this time, the first abutment portion 351 releases elastic force (i.e., the height of the first abutment portion 351 in the third-order direction increases). The lifting member 35 applies the elastic force to the support member 34. The support member 34, through the first cover 31, provides an upward force to the first end 11, thereby causing the storage medium 112 to move upward along with the first end 11, and the electrical contact surface 1121 to contact the electrical contact pin 92. The developing cartridge 1 is fully installed within the image forming apparatus. At this time, the first abutment portion 351 remains in contact with the lower rail portion 91b to continuously provide an upward elastic force to the first end 11, thereby maintaining contact between the electrical contact surface 1121 and the electrical contact pin 92. In one embodiment, the first abutting part 351 may no longer be in contact with the lower rail part 91b, and the developing cartridge 1 may be fixed in a fixed position by means of snap-fit.

[0074] In this embodiment, the lifting member 35, which is an elastic element on the developing cartridge 1, elastically avoids interference components within the image forming apparatus during the installation of the developing cartridge 1 into the image forming apparatus. After passing the interference components, the elastic force accumulated by the elastic element causes the electrical contact surface 1121 to move upward with the first end 11 to a position where it can contact the electrical contact pin 92. This ensures that the developing cartridge 1 is smoothly installed into the image forming apparatus and that the electrical contact surface 1121 contacts the electrical contact pin 92, while preventing the storage medium 112 or the electrical contact surface 1121 from moving relative to the cartridge body 10 during the installation of the developing cartridge 1, thus preventing the storage medium 112 or the electrical contact surface 1121 from detaching from the cartridge body 10.

[0075] In one embodiment, instead of setting the lifting member 35 as a separate elastic element, the lifting member 35 is directly provided on the first cover 31 or the box body 10 through secondary injection molding.

[0076] In another embodiment, the lifting member 35 can be fixedly connected to the box body 10 or the first cover 31 by welding.

[0077] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A developing cartridge, detachably mounted on a drum assembly of an image forming apparatus, the drum assembly having a movable first force-applying member, the developing cartridge comprising: The box body has a first end and a second end that are arranged opposite each other in a first direction, a third end and a fourth end that are arranged opposite each other in a second direction, and a fifth end and a sixth end that are arranged opposite each other in a third direction. The first direction, the second direction and the third direction are perpendicular to each other. The developing roller, located at the third end, rotates about a developing axis extending in the first direction; A drive unit, located at the first end, rotates about a drive axis extending in a first direction; The storage medium includes an electrical contact surface located at the first end; Its characteristic is that it further includes: The first force-receiving part is located at the first end, contacts the first force-applying member and receives the first force, and the direction of the first force is toward the developing roller in the second direction. The second force-receiving part is located at the first end, contacts the first force-applying member and receives the second force. The extension directions of the first force-receiving part and the second force-receiving part intersect. The second force-receiving part causes the first end to move upward in the third party.

2. The developing cartridge according to claim 1, characterized in that, The second force-receiving part extends backward in the second direction and upward in the third direction. The angle between the extension direction of the second force-receiving part and the second direction is 20°~60°. The direction of action of the second force intersects the second direction and the third direction. The second force has an upward component in the third direction.

3. The developing cartridge according to claim 2, characterized in that, In the third direction, the first force-bearing part is at least partially located below the second force-bearing part.

4. The developing cartridge according to claim 3, characterized in that, In the second direction, the first force-bearing part is at least partially located behind the second force-bearing part.

5. The developing cartridge according to claim 2, characterized in that, The extension length of the second force-bearing part is 5mm~15mm.

6. A developing cartridge, detachably mounted on an image forming apparatus, the image forming apparatus including a lower rail portion, the developing cartridge comprising: The box body has a first end and a second end that are arranged opposite each other in a first direction, a third end and a fourth end that are arranged opposite each other in a second direction, and a fifth end and a sixth end that are arranged opposite each other in a third direction. The first direction, the second direction and the third direction are perpendicular to each other. The developing roller, located at the third end, rotates about a developing axis extending in the first direction; A drive unit, located at the first end, rotates about a drive axis extending in a first direction; The storage medium includes an electrical contact surface located at the first end; Its characteristic is that it further includes: A lifting member is located at the first end. The lifting member is an elastic member. The lifting member contacts the lower rail and generates elastic deformation, causing the first end to move upward in a third direction.

7. The developing cartridge according to claim 6, characterized in that, The lifting component is a torsion spring.

8. The developing cartridge according to claim 6, characterized in that, The lifting member is located below the electrical contact surface in a third-party direction.

9. The developing cartridge according to claim 6, characterized in that, The lifting member includes a first abutting portion, the extension direction of which is inclined relative to the second direction and the third direction, and the first abutting portion contacts the lower rail portion.

10. The developing cartridge according to claim 9, characterized in that, The lifting member further includes a second abutting portion, wherein the first abutting portion and the second abutting portion are respectively located at two ends of the lifting member, and in a second direction the first abutting portion is further away from the developing roller than the second abutting portion.

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