Developing box

Abstract

The utility model discloses a developing box, which can be mounted on an imaging device along a mounting direction, and comprises a shell, a driving device and a driving device, a coupling gear for receiving the driving force and rotatable about a coupling gear axis extending in a first direction; a developing roller rotatable about a first axis extending in a first direction; a chip including an electrical contact surface; the lifted part is used for receiving the force of the imaging device so as to enable the electric contact surface to approach an electric contact component inside the imaging device; the electrical contact surface is inclined relative to the mounting direction; according to the developing box disclosed by the utility model, the problem that the developing chip supported on the developing box is disconnected from the electrical contact of the imaging equipment after the developing box shakes is avoided, and the electrical connection stability of the developing chip and the electrical contact is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrophotographic imaging technology, and in particular to a developing cartridge. Background Technology

[0002] A developer cartridge is a box that stores developer. When the developer in the developer cartridge runs out, users can replace it themselves without the help of a professional after purchasing a new developer cartridge. This convenient method is increasingly favored by users. In addition, this type of developer cartridge can be used with a drum box and can be installed as a whole into the imaging device in a detachable manner.

[0003] The prior art discloses a developing cartridge, which includes a housing for containing developer, a developing holder disposed on one side of the housing, and a developing chip supported on the developing holder. The developing chip stores information such as the model of the developing cartridge and whether the developing cartridge is new or used. The developing chip can make electrical contact with the imaging device to establish a communication connection with the imaging device. However, the developing holder can move relative to the housing within a limited range and stroke, and the developing chip supported on the developing holder will also move with the moving developing holder. This will make the electrical connection between the developing chip and the imaging device unstable, and there is a probability of disconnection. Therefore, these situations are obviously undesirable for manufacturers and users. Utility Model Content

[0004] Therefore, this utility model provides a developing cartridge to solve the above-mentioned technical problems, mainly through the following technical solution:

[0005] A developing cartridge, the developing cartridge being mountable to an imaging device along an installation direction, the developing cartridge comprising:

[0006] A housing for containing developer, the housing having a first side and a second side separated from each other in a first direction, and a third side and a fourth side separated from each other in a second direction;

[0007] A coupling gear for receiving driving force and rotatable about a coupling gear axis extending in the first direction, wherein the coupling gear is located on the first side of the housing in the first direction;

[0008] The developing roller is rotatable about a first axis extending in the first direction, and in the second direction the developing roller is located on the third side of the housing;

[0009] The chip includes an electrical contact surface located on the first side of the housing in the first direction;

[0010] The lifted portion is used to receive the force of the imaging device to bring the electrical contact surface closer to the electrical contact member inside the imaging device;

[0011] The electrical contact surface is inclined relative to the mounting direction.

[0012] Furthermore, in the mounting direction, the electrical contact surface is inclined towards the downstream side of the mounting direction.

[0013] Furthermore, the angle between the electrical contact surface and the mounting direction is α, where 10°≤α≤20°.

[0014] Furthermore, the developing cartridge also includes a chip holder for supporting the chip, and the chip holder is fixedly disposed on the first side of the housing.

[0015] Furthermore, the developing cartridge also includes a forced push protrusion that extends in the first direction;

[0016] In the second direction, the forced push protrusion is closer to the developing roller than the electrical contact surface.

[0017] Furthermore, the developing cartridge also includes a stirring rack that is rotatable about a second axis extending in the first direction;

[0018] In the second direction, the second axis is closer to the first axis than the electrical contact surface.

[0019] Furthermore, the developing cartridge also includes a stirring rack gear, which is connected to the end of the stirring rack;

[0020] In the second direction, at least a portion of the stirring rack gear overlaps with the electrical contact surface.

[0021] Furthermore, the developing cartridge also includes a locking part, which is located on the second side of the housing in the first direction;

[0022] In the second direction, the locked portion is closer to the fourth side of the housing than the third side of the housing.

[0023] Furthermore, the lifted portion is configured as a force-bearing protrusion, which extends outward from the fourth side of the housing in the second direction.

[0024] Furthermore, in the second direction, the lifted portion can move relative to the housing between a first position and a second position that is closer to the electrical contact surface than the first position.

[0025] Beneficial effects:

[0026] The developing cartridge of this invention fixes the developing holder to the housing, so that the position of the developing holder relative to the housing does not change. This avoids the problem of the developing chip supported on it losing contact with the electrical contacts of the imaging device due to shaking, and improves the stability of the electrical connection between the developing chip and the electrical contacts.

[0027] By tilting the electrical contact surface relative to the mounting direction of the developing cartridge, the electrical contact surface of the developing cartridge can more easily contact the electrical contacts of the imaging device. In addition, it can increase the contact area between the electrical contact surface and the electrical contacts, thereby improving the stability of the electrical connection between the electrical contact surface and the electrical contacts. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of a drum box in the prior art;

[0029] Figure 2 This is a partial schematic diagram of a drum box in the prior art;

[0030] Figure 3 This is a schematic diagram of the developing cartridge of this utility model at a certain angle;

[0031] Figure 4 This is a schematic diagram of the left side of the developing cartridge of this utility model in the left-right direction when the cover is hidden;

[0032] Figure 5 This is a schematic diagram of the right side of the developing cartridge of this utility model in the left-right direction;

[0033] Figure 6 This is a schematic diagram showing the holder of the developing cartridge of this utility model being removed from the developing cartridge;

[0034] Figure 7 This is a schematic diagram of the retainer of the developing cartridge of this utility model at a certain angle;

[0035] Figure 8 This is a schematic diagram of the left side of the developing cartridge of this utility model in the left-right direction;

[0036] Figure 9 This is a schematic diagram showing the positional relationship between the electrical contact surface and the electrical contacts when the developing cartridge of this utility model is installed in the imaging device;

[0037] Figure 10 This is a schematic diagram of the developing cartridge of this utility model installed in the drum cartridge at a certain angle;

[0038] Figure 11 This is a three-dimensional structural diagram of the drum box from another angle in the existing technology;

[0039] Figure 12 This is a schematic diagram of the developing cartridge of this utility model from another angle;

[0040] Figure 13 This is a partial three-dimensional structural diagram of the left end of the developing cartridge in the state where the movable parts are disassembled from the cover.

[0041] Figure 14 This is a three-dimensional structural diagram of the moving parts in the developing cartridge of this utility model;

[0042] Figure 15 This is a schematic diagram of the developing cartridge of this utility model installed in the drum cartridge at a certain angle;

[0043] Figure 16 This is a utility model Figure 15 Enlarged view of point A in the image;

[0044] Figure 17 This is a schematic diagram of the left side structure of the developing box, drum box, and imaging device with the movable parts in the first position of the developing box of this utility model.

[0045] Figure 18 This is a schematic diagram of the left side structure of the developing box, drum box, and imaging device with the movable parts in the second position of the developing box of this utility model. Detailed Implementation

[0046] To make the objectives, technical solutions, and technical effects of the embodiments of this utility model clearer, the technical solution of the developing cartridge of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely preferred embodiments of this utility model, and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the protection scope of this utility model.

[0047] like Figure 1-2 As shown, a drum box 1 in the prior art is illustrated, such as Figure 3-5 As shown, a developing cartridge 100 according to Embodiment 1 of the present invention is illustrated. The developing cartridge 100 can be detachably installed into the drum cartridge 1. At the same time, the two can be installed as a whole and detachably installed into an electrophotographic imaging device (hereinafter referred to as "imaging device"). With the cooperation of the two, the imaging device can perform printing tasks. The drum cartridge 1 in the prior art and the developing cartridge 100 in the present invention will be described in detail below with reference to the specific drawings.

[0048] Drum Box

[0049] like Figure 1-2The diagram illustrates a drum housing 1 in the prior art. The drum housing 1 includes a drum frame 1a, which has a developing cartridge receiving portion 2 that houses a developing cartridge 100 and is configured as a cavity. A photosensitive drum 3 is arranged on the front side of the developing cartridge receiving portion 2. A photosensitive drum gear 4 is connected to the left end of the photosensitive drum 3. The photosensitive drum gear 4 can mesh with a drum coupling gear (not shown in the diagram) in an imaging device to receive driving force and rotate, thereby driving the photosensitive drum 3 to rotate about a photosensitive drum axis extending in the left-right direction. The front-back direction and the left-right direction... The drum housing 1 also includes push-pull components 5 respectively disposed on the left and right sides of the developing cartridge receiving section 2. These push-pull components 5 are elastic and can generate an elastic pushing force when subjected to external force. A locking member 6 is also disposed on the rear side of the push-pull component 5 on the right side of the drum housing 1. The locking member 6 is not limited to being disposed behind the push-pull component 5 on the right side of the drum housing 1. The locking member 6 can lock the developing cartridge 100 by blocking its movement, preventing the developing cartridge 100 from actively detaching from the drum housing 1 under external force after being installed in the drum housing 1. Guide portions 9 are also disposed on both sides of the developing cartridge receiving section 2 in the left-right direction. The guide portions 9 are used to guide the developing cartridge 100 to the correct position in the developing cartridge receiving section 2. In the front-back direction, the guide portions 9 are located between the photosensitive drum 3 and the push-pull component 5. Viewed along the left-right direction, the push-pull component 5, guide portions 9, and photosensitive drum 3 are generally arranged from back to front in the front-back direction.

[0050] like Figure 2 As shown, the locking member 6 includes a locking part 6a and a lifting part 6b. The locking part 6a is disposed on the upper side closer to the drum housing 1 relative to the lifting part 6b. The locking member 6 can rotate about the shaft 6c disposed between the locking part 6a and the lifting part 6b. The locking part 6a can lock the developing cartridge 100 by blocking its movement, preventing the developing cartridge 100 from being dislodged from the drum housing 1 by external force after being installed in the drum housing 1. The lifting part 6b can push the developing cartridge 100 upward when it needs to be removed from the drum housing 1, so that the developing cartridge 100 disengages from the locking part 6a of the drum housing 1 and releases the lock with the drum housing 1.

[0051] like Figure 1 As shown, a drum retainer 7 that can move relative to the drum frame 1a is also provided at the left end of the drum box 1. A drum chip 8 that stores various information about the drum box is supported on the drum retainer 7. For example, the drum chip 8 stores information such as the lifespan of the drum box 1 and whether the drum box 1 is a new box. The drum chip 8 has a drum electrical contact surface 8a provided at the left end of the drum frame 1a. Of course, the drum chip 8 is also provided at the left end of the drum frame 1a. The drum electrical contact surface 8a can make electrical contact with the drum end electrical contact (not shown in the figure) of the imaging device and can be electrically connected to the drum chip 8.

[0052] Developing box

[0053] like Figure 3-8As shown, a developing cartridge 100 of the present invention is illustrated. The developing cartridge 100 can be detachably installed in the aforementioned drum box 1. The developing cartridge 100 includes a housing 101, which includes a powder hopper 101a for containing developer and a detachable cover 101b installed on the left side of the powder hopper 101a. The cover 101b can cover the gear system of the developing cartridge 100. The gear system of the developing cartridge 100 includes, but is not limited to, a coupling gear 111, a developing roller gear 112, a stirring rack gear 113, and a powder delivery roller gear 114. The coupling gear 111 is located at the left end of the housing 101 and includes a coupling part that can be coupled to the drive part of the imaging device to receive the driving force from the imaging device, and gear teeth integrally provided with the coupling part and capable of meshing with the developing roller gear 112 and the powder delivery roller gear 114. The gear teeth can drive the developing roller gear 112 and the powder delivery roller gear 114 to rotate. The stirring rack gear 113 can receive the driving force of the coupling gear 111 through an idler gear 115 and rotate. The developing cartridge 100 also includes a stirring frame 102, a powder delivery roller 103, and a developing roller 104 supported on the housing 101. The left ends of the stirring frame 100 are respectively connected to a stirring frame gear 113, a powder delivery roller gear 114, and a developing roller gear 112. The stirring frame gear 113 drives the stirring frame 102 to rotate about a stirring frame axis A1 extending in the left-right direction. The powder delivery roller gear 114 drives the powder delivery roller 103 to rotate about a powder delivery roller axis extending in the left-right direction. The developing roller gear 112 drives the developing roller 104 to rotate about a developing roller axis A2 extending in the left-right direction. The developing roller 104 is positioned at the front end of the housing 101 in the front-back direction. When the developing cartridge 100 is installed in the drum cassette 1, the developing roller 104 of the developing cartridge 100 remains in contact with the photosensitive drum 3 of the drum cassette 1. During the actual operation of the developing cartridge 100, the rotating stirring frame 102 stirs the developer located in the powder hopper 101a and delivers the developer to the powder delivery roller 103. The powder delivery roller 103 rotates... The developer is fed onto the developing roller 104, and the developing roller 104, through contact with the photosensitive drum 3, can transfer the developer it carries onto the photosensitive drum 3 to develop the electrostatic latent image on the photosensitive drum 3. The developing cartridge 100 includes a powder discharge blade 107 for controlling the thickness of the developer adhering to the developing roller 104. The powder discharge blade 107 is located between the powder feeding roller 103 and the developing roller 104 in the front-back direction, and there is a certain gap between the powder discharge blade 107 and the developing roller 104 to control the thickness of the developer adhering to the developing roller. The developing cartridge 100 is also provided with an electrode 105, which includes an electrical contact portion 105a located at the right end of the developing cartridge 100. The electrical contact portion 105a can be electrically connected to the power supply component of the imaging device. The electrode 105, through the electrical contact portion 105a and the power supply component, can supply power to at least one of the developing roller 104, the powder feeding roller 103, and the powder discharge blade 107 to ensure stable delivery of the developer.

[0054] The left and right ends of the developing cartridge 100 are respectively provided with forced push protrusions 121. The forced push protrusions 121 extend outward from the left and right sides of the cover 101b. The forced push protrusions 121 are located between the coupling gear 111 and the stirring frame axis A1 in the front-back direction. When the developing cartridge 100 is installed in the drum box 1, the forced push assembly 5 of the drum box 1 can be used to elastically push the forced push protrusions 121 forward (i.e., in the direction close to the developing roller 104 or the photosensitive drum 3), so that the developing roller 104 (described below) of the developing cartridge 100 keeps in close contact with the photosensitive drum 3, so as to ensure that the developer on the developing roller 104 can be properly delivered to the photosensitive drum 3 and avoid printing quality problems. It is worth mentioning that the structure for receiving the elastic forced push force is not limited to being forced to push in contact with the forced push assembly 5. A similar structure to the forced push assembly 5 can also be used on the developing cartridge 100 to contact and force push other components in the drum box 1. This is not a limitation. The developing cartridge 100 also includes a locking part 122 disposed on the right side of the toner compartment 101a. The locking part 122 extends to the right from the right end wall of the cover 101b, that is, it extends from left to right. The locking part 122 can move together with the housing 101. When the developing cartridge 100 is installed into the drum housing 1, the locking part 122 can abut against and be blocked by the locking member 6 to lock the developing cartridge 100 and prevent the developing cartridge 100 from being detached from the drum housing 1 due to external force after it is installed into the drum housing 1. The left and right ends of the developing cartridge 100 are respectively provided with guided protrusions 123. The guided protrusions 123 extend outward from the left and right end walls of the cover 101b. Projected along the left and right direction, at least a portion of the guided protrusions 123 coincides with the developing roller 104. In other embodiments, the guided protrusions may also be constructed as developing rollers 104 extending outward from the outer sides of the housing 101 in the left and right direction. During the installation of the developing cartridge 100 into the drum cassette 1, the guided protrusions 123 cooperate with the guide portion 9 to install the developing cartridge 100 into the correct position of the developing cartridge receiving portion 2 in the drum cassette 1.

[0055] like Figure 6As shown, the developing cartridge 100 also includes a chip 132 disposed at the left end of the housing 101 and a retainer 130 for supporting the chip 132. Specifically, the retainer 130 is fixedly mounted on the outer side of the cover 101b, which is the side of the cover 101b facing the outside of the developing cartridge 100. Corresponding to the outer side is the inner side of the cover 101b, which is the side of the cover 101b facing the powder compartment 101a. Specifically, the retainer 130 is positioned by the cooperation of the positioning post 130a and positioning hole 130b provided on the cover 101b or the retainer 130, and then secured by the elastic buckle 130c or screw. The chip 132 is fastened to the cover 101b by means of nails or other means to facilitate the disassembly, assembly, replacement and upgrade of the chip 132. In other optional embodiments, the retaining part 130 may also be formed by extending from the left end of the housing 101 in the left-right direction. Specifically, the retaining part 130 is formed by extending from the right to the left from the outer side of the cover. Optionally, the retaining part 130 may be formed by extending from the left end of the powder hopper 101a to the left. That is to say, the retainer 130 may also be integrally formed with the cover 101b or the powder hopper 101a. This is not limited, as long as the retainer 130 is fixedly installed on the cover 101b to accurately support the chip 132 and its electrical contact surface 132a.

[0056] The chip 132 is supported on the holder 130. Because the holder 130 is fixedly mounted on the housing 101, its position relative to the housing 101 remains fixed. Therefore, the position of the chip 132 supported on the holder 130 and its electrical contact surface 132a is further suppressed, resulting in more stable contact with the electrical contact 12 in the imaging device (described later). The chip 132 includes an electrical contact surface 132a electrically connected to the imaging device and a storage section (not shown). The electrical contact surface 132a can be electrically connected to the electrical contact 12 of the imaging device, while the storage section stores information such as the model number of the developing cartridge 100. It is electrically connected to the electrical contact surface 132a. When the developing cartridge 100 is installed in the drum cassette 1... During operation, the developing cartridge 100 establishes a communication connection with the imaging device through the electrical contact surface 132a and the electrical contact of the imaging device. This allows the imaging device to read information from the storage unit to determine the model, age, and maximum number of pages printed of the developing cartridge 100. When the developer in the developing cartridge 100 is about to run out, the imaging device can prompt the user to replace it with a new developing cartridge via the operation panel. Therefore, by setting the chip 132, the developing cartridge 100 can improve its information level and enhance the user experience. Furthermore, compared to the existing counting tooth structure, the developing chip occupies a smaller volume, which helps to reduce the size of the developing cartridge 100 and facilitates its miniaturization.

[0057] When the developing cartridge 100 is installed in the drum cartridge 1, the electrical contact surface 132a of the developing cartridge 100 is further away from the developing roller 104 in the front-back direction than the forced push protrusion 121, and the electrical contact surface 132a of the chip 132 is almost maximally further away from the electrical contact portion 105a of the electrode 105 in the left-right direction; furthermore, measured in the front-back direction, the distance between the electrical contact portion 105a and the electrical contact surface 132a of the chip 132 is greater than the distance between the electrical contact portion 105a of the electrode 105 and the developing roller 104; thus, the mutual interference experienced when they are electrically connected to the imaging device respectively will be significantly reduced. Figure 4-5 As shown, in the front-to-back direction, the stirring rack axis A1 is closer to the developing roller axis A2 than the electrical contact surface 132a. In the front-to-back direction, at least a portion of the stirring rack gear 113 is arranged to overlap with the electrical contact surface 132a.

[0058] like Figure 7 As shown, the retainer 130 includes a main body 131a, a connecting part 131b, a chip mounting groove 131c, and a positioning protrusion 131d. The connecting part 131b connects the main body 131a and the cover 101b, and extends in the left-right direction. That is, the main body 131a, the connecting part 131b, and the cover 101b are arranged sequentially from left to right. The upper surface of the main body 131a is recessed downward to form the chip mounting groove 131c, in which the chip 132 is installed. The upper surface of the connecting part 131b extends upward to form the positioning protrusion 131d, which corresponds to the recess of the imaging device and is used to guide the installation of the developing cartridge 100 and limit the position of the retainer 130. A limiting groove 131e is also formed between the main body 131a and the positioning protrusion 131d, which corresponds to the protrusion of the imaging device. The retainer 130 has inclined surfaces 131f on both sides in the front-rear direction.

[0059] like Figure 7-9 As shown in Figure 12, the chip mounting slot 131c is inclined forward in the front-rear direction, and the chip 132 is installed in the chip mounting slot 131c. That is to say, the electrical contact surface 132 on the chip 132 is inclined forward in the front-rear direction along with the inclination of the chip mounting slot 131c. Due to the inclination of the electrical contact surface 132a, during the installation of the developing cartridge 100 together with the drum cassette 50 into the imaging device, the electrical contact surface 132a is more likely to contact the electrical contact 12 in the imaging device, reducing the installation difficulty of the developing cartridge 100. The inclination of the electrical contact surface 132a increases the contact area between the electrical contact surface 132a and the electrical contact 12, making the communication connection between the developing cartridge 100 and the imaging device more stable.

[0060] Specifically, such as Figure 7-9 As shown, the developing cartridge 100 along Figure 8 The front-to-back direction shown is from back to front when the developing cartridge 100 is installed into the imaging device. That is, the direction in which the developing cartridge 100 is installed into the imaging device is the front-to-back direction, with the front of the developing cartridge 100 being downstream in the installation direction and the rear of the developing cartridge 100 being upstream in the installation direction. To facilitate smoother installation of the developing cartridge 100 into the imaging device, the plane containing the electrical contact surface 132a is inclined relative to the installation direction of the developing cartridge 100, with the electrical contact surface 132a inclined downstream in the installation direction of the developing cartridge 100. Specifically, the angle between the plane containing the electrical contact surface 132a and the installation direction of the developing cartridge 100 is α, where 0° ≤ α ≤ 60°. When α is less than 60°, interference between the retainer 130 and the imaging device can be avoided, allowing the developing cartridge 100 to be smoothly installed into the imaging device. Figure 9 As shown, in the imaging device, the extending (moving) direction of the electrical contact 12 is perpendicular to the mounting direction of the developing cartridge 100. When the developing cartridge 100 is mounted in the imaging device, the angle between the electrical contact surface 132a and the normal direction of the extending direction of the electrical contact 12 is α.

[0061] Furthermore, 10°≤α≤30°, when α is less than or equal to 30°, the installation of the developing cartridge 100 toward the imaging device is smoother.

[0062] Preferably, 17°≤α≤20°.

[0063] In this embodiment, the bottom surface of the holder 130 is approximately parallel to the front-back direction of the developing cartridge 100. The front-back direction is the direction in which the developing cartridge 100 is perpendicular to the direction of gravity (up and down) and the direction of the axis of the developing roller 104 (left and right) when it is in the imaging device.

[0064] To ensure a stable connection between the chip 132 and the imaging device, the developing cartridge 100 also includes a lifting section with a force receiving section. After the developing cartridge 100 is installed in the imaging device, the force receiving section can receive the force of the pushing section inside the imaging device, thereby driving the developing cartridge 100 as a whole to move in the direction that makes the electrical contact surface 132a contact with the electrical contact 12, so that the electrical contact surface 132a and the electrical contact 12 inside the imaging device are in close contact, further improving the stability of the electrical connection between the electrical contact surface 132a and the electrical contact 12.

[0065] like Figure 4-5 as well as Figure 8 As shown, in one achievable embodiment of this utility model, the lifted part is further configured as a force-bearing protrusion 1060, which extends from the rear side of the housing 101 in the left-right direction. Specifically, the force-bearing protrusion 1060 can also extend from the cover 101b in the left-right direction.

[0066] like Figure 10 and Figure 12 As shown, in one achievable embodiment of this utility model, the lifted part is constructed as a lifted assembly 1050. The lifted assembly 1050 includes a movable member 1053 that can move relative to the housing 101. A force receiving part can receive external force to cause the movable member 1053 to drive the developing cartridge 100 to move. The chip 132 and its electrical contact surface 132a can move together with the entire developing cartridge 100. Specifically, further, as... Figure 10-12 As shown, the left side of the drum frame 1a inside the drum housing 1 is provided as a stepped surface 57, which includes multiple surfaces facing upwards in the vertical direction. The developing cartridge 100 is provided with a lifting component 1050. After the developing cartridge 100 is installed in the imaging device, the lifting component 1050 is simultaneously subjected to the pushing force of the outer cover 11 in the imaging device and the supporting force of the stepped surface 57 in the drum housing 1. This causes the lifting component 1050 to move the developing cartridge 100 and its electrical contact surface 132a upwards in the vertical direction, and to bring the electrical contact surface 132a into contact with the electrical contact 12 of the imaging device. This ensures a stable electrical connection between the electrical contact surface 132a and the electrical contact 12 in the imaging device, thereby ensuring a stable communication link between the developing cartridge 100 and the imaging device.

[0067] like Figure 13-16 As shown, the lifting assembly 1050 of the developing cartridge 100 also includes a mounting groove 1051 formed by an inward recess on the rear side of the housing 101. Specifically, the mounting groove 1051 is formed by an inward recess on the rear side of the cover 101b located on the left side of the housing body 101a. At least a portion of the movable member 1053 is located inside the mounting groove 1051, and the movable member 1053 can move relative to the housing 101 along the mounting groove 1051. The movable member 1053 and the elastic member 1052 connected between the movable member 1053 and the cover 101b are disposed inside the mounting groove 1051. The mounting groove 1051 extends in the front-rear direction, and the movable member 1053 can slide along the mounting groove 1051 in the front-rear direction.

[0068] Specifically, the movable part 1053 includes a sliding part 1053a, a limiting part 1053b, a force-receiving part 1053c, a guiding part 1053d, and a supported part 1053e. The movable part 1053 is located at the end of the developing cartridge 100 near the drive side. The movable part 1053 is connected to the housing 101 through a mounting groove 1051 provided on the cover 101b. The movable part 1053 can move relative to the housing 101. The sliding part 1053a serves as the main body of the movable part 1053. The limiting parts 1053b are provided on both sides of the sliding part 1053a in the left-right direction. Specifically, the limiting parts 1053b are constructed such that in the left-right direction... The elastic buckles protrude outward from both sides of the sliding part 1053a to prevent the sliding part 1053a from leaving the mounting groove 1051; the force-bearing part 1053c is further away from the developing roller 104 in the front-back direction than the sliding part 1053a, and the force-bearing part 1053c is constructed to face the force-bearing surface in the front-back direction toward the side away from the developing roller 104; the support part 1053e is spaced apart from the force-bearing part 1053c in the left-right direction, the support part 1053e is further away from the developing roller 104 in the front-back direction than the guide part 1053d, and the support part 1053b and the guide part 1053d at least partially overlap in the left-right direction. The force-receiving part 1053c can receive external force to drive the movable part 1053 to move from a first position away from the developing roller 104 to a second position closer to the developing roller 104 than the first position; the guide part 1053d is constructed as a guide surface extending from the front upper to the rear lower. When the movable part 1053 receives external force and moves from the first position to the second position, the guide part 1053d contacts the stepped surface 57 and, under the pushing force of the outer cover 11 on the force-receiving part 1053c, drives the developing cartridge 100 to move from bottom to top. During this process, the electrical contact surface 132a moves with the developing cartridge 100 from bottom to top; at the same time, the guided supported part 1053e moves towards the step surface 57. During the upward movement of the developing cartridge 100, the electrical contact surface 132a enters the interior of the guide groove 12a and contacts the electrical contact 12, thereby achieving an electrical connection between the electrical contact surface 132a and the electrical contact 12, establishing a communication link between the developing cartridge 100 and the imaging device. When the developing cartridge 100 and the imaging device are in operation, the outer cover 11 is locked to one side of the developing cartridge 100, so that the reinforcing plate 11a of the outer cover 11 always maintains a pushing force on the movable part 1053, thereby keeping the movable part 1053 between the stepped surface 57 and the housing 101, so as to maintain a stable electrical connection between the electrical contact surface 132a and the electrical contact 12, and avoid the occurrence of communication interruption between the developing cartridge 100 and the imaging device.

[0069] The following will describe in detail the process of installing the developing cartridge 100 into the imaging device, such as... Figure 17-18 As shown, during use, the user installs the developing cartridge 100 into the imaging device from back to front. At this time, the movable part 1053 is in the position as shown. Figure 17 In the first position shown, the developing chip 132 and its electrical contact surface 132a are located below the guide groove 12a. Then, the user pushes the outer cover 11 upwards, causing the reinforcing plate 11a of the outer cover 11 to contact the force-receiving part 1053c of the movable member 1053. With continued pushing by the user, the reinforcing plate 11a applies a forward pushing force to the force-receiving part 1053c, thereby allowing the movable member 1053 to slide freely from the first position along the mounting groove 1051 in a generally front-to-back direction from back to front. Figure 18 In the second position shown, during the sliding of the movable part 1053, the supported part 1053e of the movable part 1053 abuts against the stepped surface 57. Under the continuous pushing of the user, the movable part 1053 is supported between the drum frame 1a of the drum box 1 and the housing 101. That is, the supported part 1053c is supported by the stepped surface 57. This supporting force is transmitted to the housing 101 through the contact between the upper surface of the movable part 1053 and the upper wall of the mounting groove 1051. This causes the movable part 1053 to drive the developing cartridge 100 to move upward. During the upward movement of the developing cartridge 100, the electrical contact surface 132a enters the interior of the guide groove 12a and contacts the electrical contact 12. This establishes an electrical connection between the electrical contact surface 132a and the electrical contact 12, thus establishing a communication link between the developing cartridge 100 and the imaging setup. When the developing cartridge 100 and the imaging device are in operation, the outer cover 11 is locked to one side of the developing cartridge 100, so that the reinforcing plate 11a of the outer cover 11 always maintains a pushing force on the movable part 1053, thereby keeping the movable part 1053 between the stepped surface 57 and the housing 101, so as to maintain a stable electrical connection between the electrical contact surface 132a and the electrical contact 12, and avoid the occurrence of communication interruption between the developing cartridge 100 and the imaging device.

[0070] When the imaging device needs to replace the developing cartridge 100, the user opens the outer cover 11. At this time, the pushing force on the movable part 1053 disappears. Under the action of the elastic part 1052, the movable part 1053 returns from the second position to the first position. The developing cartridge 100 moves downward under the action of gravity, thereby causing the developing chip 132 to leave the guide groove 12a, making it convenient for the user to take out the developing cartridge 100 and replace it with a new developing cartridge 100 for reuse. The elastic part 1052 is preferably a spring.

[0071] Furthermore, the length of the movable part 1053 in the vertical direction gradually shortens from its rear end in the front-rear direction to its front end in the front-rear direction. When the movable part 1053 is subjected to a forward pushing force, so that the movable part 1053 can come into contact with the step surface 57, the movable part 1053 provides an upward force to the housing 101 to drive the developing cartridge 100 to move upward.

[0072] Beneficial effects

[0073] The developing cartridge of this invention fixes the developing holder to the housing, so that the position of the developing holder relative to the housing does not change. This avoids the problem of the developing chip supported on it losing contact with the electrical contacts of the imaging device due to shaking, and improves the stability of the electrical connection between the developing chip and the electrical contacts.

[0074] By tilting the electrical contact surface relative to the mounting direction of the developing cartridge, the electrical contact surface of the developing cartridge can more easily contact the electrical contacts of the imaging device. In addition, it can increase the contact area between the electrical contact surface and the electrical contacts, thereby improving the stability of the electrical connection between the electrical contact surface and the electrical contacts.

[0075] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A developing cartridge, the developing cartridge being mountable to an imaging device along an installation direction, the developing cartridge comprising: A housing for containing developer, the housing having a first side and a second side separated from each other in a first direction, and a third side and a fourth side separated from each other in a second direction; A coupling gear for receiving driving force and rotatable about a coupling gear axis extending in the first direction, wherein the coupling gear is located on the first side of the housing in the first direction; The developing roller is rotatable about a first axis extending in the first direction, and in the second direction the developing roller is located on the third side of the housing; Its characteristic is that it further includes: The chip includes an electrical contact surface located on the first side of the housing in the first direction; The lifted portion is used to receive the force of the imaging device to bring the electrical contact surface closer to the electrical contact member inside the imaging device; The electrical contact surface is inclined relative to the mounting direction.

2. The developing cartridge according to claim 1, characterized in that, In the installation direction, the electrical contact surface is inclined toward the downstream side of the installation direction.

3. The developing cartridge according to claim 1, characterized in that, The angle between the electrical contact surface and the mounting direction is α, where 10°≤α≤20°.

4. The developing cartridge according to claim 1, characterized in that, The developing cartridge also includes a chip holder for supporting the chip, which is fixedly disposed on the first side of the housing.

5. The developing cartridge according to claim 1, characterized in that, The developing cartridge also includes a forced push protrusion that extends in the first direction; In the second direction, the forced push protrusion is closer to the developing roller than the electrical contact surface.

6. The developing cartridge according to claim 1, characterized in that, The developing chamber also includes a stirring rack that is rotatable about a second axis extending in the first direction; In the second direction, the second axis is closer to the first axis than the electrical contact surface.

7. The developing cartridge according to claim 6, characterized in that, The developing cartridge also includes a stirring rack gear, which is connected to the end of the stirring rack; In the second direction, at least a portion of the stirring rack gear overlaps with the electrical contact surface.

8. The developing cartridge according to claim 1, characterized in that, The developing cartridge also includes a locking part, which is located on the second side of the housing in the first direction; In the second direction, the locked portion is closer to the fourth side of the housing than the third side of the housing.

9. The developing cartridge according to claim 1, characterized in that, The lifted portion is configured as a force-bearing protrusion, which extends outward from the fourth side of the housing in the second direction.

10. The developing cartridge according to claim 1, characterized in that, In the second direction, the lifted portion can move relative to the housing between a first position and a second position that is closer to the electrical contact surface than the first position.

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