Developing cartridge

Abstract

The utility model provides a developing box which is detachably mounted in imaging equipment, the developing box is provided with a shell for accommodating carbon powder and a developing roller rotatably arranged in the shell, the developing roller is used for supplying the carbon powder to a photosensitive drum outside the developing box, and the extending direction of the rotating axis of the developing roller is the longitudinal direction; the developing box further comprises an acting mechanism for forcing the developing roller to be in contact with and separated from the photosensitive drum, and the acting mechanism comprises a first acting piece located at one end of the shell in the longitudinal direction; the first acting piece comprises a first part used for receiving contact force applied by the imaging equipment, and the contact force is used for forcing the developing roller to be in contact with the photosensitive drum; the second part is used for receiving separating force applied by the imaging equipment, the separating force is used for forcing the developing roller to be separated from the photosensitive drum, and the first elastic part is at least used for transmitting contact force and is arranged between the first part and the second part; the first part is movable relative to the second part, and the first part and the second part are both made of rigid materials.

Description

[0001] This utility model claims priority to the following prior applications filed by the applicant with the Chinese Patent Office on June 7, 2024, entitled "Developer Box" with application number 202421315735.9; the following prior applications filed by the applicant with the Chinese Patent Office on September 6, 2024, entitled "Developer Box" with application number 202422193628.X; and the following prior applications filed by the applicant with the Chinese Patent Office on September 13, 2024, entitled "Developer Box" with application number 202422258038.0, the contents of which are cross-referenced in this application. Technical Field

[0002] This utility model relates to the field of electrophotographic imaging, and more particularly to a developing cartridge that can be detachably installed in an electrophotographic imaging device. Background Technology

[0003] The developing cartridge is an essential component of an imaging device. It has a housing for holding toner and a developing roller rotatably disposed within the housing. The developing roller carries the toner and supplies it to a photosensitive drum outside the developing cartridge, developing an electrostatic latent image on the surface of the photosensitive drum. The axis of rotation of the developing roller extends longitudinally. Along the longitudinal direction, the developing cartridge also includes a first end cap and a support at one end of the housing. The support supports rotating components such as the developing roller. When development is not required, to prevent damage to the developing roller and photosensitive drum from prolonged contact, the developing cartridge typically has an action mechanism that receives forces from the imaging device. This action mechanism forces the developing roller and photosensitive drum into contact and / or separate.

[0004] In existing developing cartridges, the operating mechanism has a first operating member located at one end of the housing. The first operating member is provided with a first part for receiving contact force and a second part for receiving separation force. The first part is immovable relative to the second part. When the first operating member receives contact force and separation force, it is subjected to a large impact force, which causes the movement of the developing cartridge to be unstable. Utility Model Content

[0005] In view of the above, the present invention provides a developing cartridge employing the following technical solution to solve at least one of the above problems, specifically:

[0006] A developing cartridge, detachably mounted to an imaging device, having a housing for containing toner and a developing roller rotatably disposed within the housing, the developing roller for supplying toner to a photosensitive drum outside the developing cartridge, the developing roller's rotation axis extending in a longitudinal direction;

[0007] The developing cartridge also includes an action mechanism for forcing the developing roller to contact and separate from the photosensitive drum. Along the longitudinal direction, the action mechanism includes a first action member located at one end of the housing. The first action member includes: a first portion for receiving a contact force applied by the imaging device, the contact force forcing the developing roller to contact the photosensitive drum; a second portion for receiving a separation force applied by the imaging device, the separation force forcing the developing roller to separate from the photosensitive drum; and a first elastic member, at least for transmitting the contact force, disposed between the first portion and the second portion. The first portion is movable relative to the second portion, and both the first portion and the second portion are made of a rigid material.

[0008] Furthermore, the first part and the second part are formed separately.

[0009] Furthermore, when either the first part or the second part is subjected to force, the first part and the second part can move together.

[0010] Furthermore, the developing cartridge also includes a driving assembly for receiving the rotational driving force output by the imaging device to directly or indirectly drive the developing roller to rotate; and a clutch for controlling the internal components of the driving assembly to switch between a separated state and a coupled state; the clutch is configured to move smoothly along a direction intersecting the longitudinal direction, and the clutch switches between a first state and a second state through smooth movement, thereby causing the internal components of the driving assembly to switch between a separated state and a coupled state.

[0011] Furthermore, when the clutch is in the second state, the internal components of the drive assembly are engaged, and the developing roller and the photosensitive drum are close to each other; when the clutch is in the first state, the internal components of the drive assembly are disengaged, and the developing roller and the photosensitive drum are separated from each other.

[0012] Furthermore, in the second state, the internal components of the drive assembly are engaged, and the drive assembly can transmit driving force to the developing roller; in the first state, the internal components of the drive assembly are disengaged, and the drive assembly cannot transmit driving force to the developing roller.

[0013] Furthermore, the clutch also includes a clutch body and a third engagement portion formed on the clutch body; the developing cartridge also includes a third engaged portion for engaging with the third engagement portion; in a direction intersecting the longitudinal direction, the third engagement portion and the third engaged portion slide into contact.

[0014] Furthermore, the clutch moves with the rotation of the first actuating member, thereby causing the clutch to move smoothly along the third engaged portion.

[0015] Furthermore, the developing cartridge also has an end cap located at the longitudinal end of the housing and a chip for storing information related to the developing cartridge; when the developing cartridge is viewed in the longitudinal direction, when the developing cartridge is in the posture of the operating mechanism and the chip is located at the bottom of the developing cartridge, the operating mechanism is not exposed outside the developing cartridge, and the operating mechanism is covered by the end cap.

[0016] Furthermore, the actuating mechanism also includes a second actuating member located at the other end of the housing; the developing cartridge also includes a connecting member extending in the longitudinal direction; the sum of the distances of the connecting member, the first actuating member, and the second actuating member extending in the longitudinal direction is greater than the distance of the developing roller extending in the longitudinal direction.

[0017] Beneficial effects: The developing cartridge with the above structure has a first part that can move relative to the second part of the first action member at at least one longitudinal end of the processing cartridge, which reduces the instantaneous impact force on the first action member and makes the movement of the developing cartridge more stable. The first elastic member is located between the first part and the second part. Both the first part and the second part are made of rigid materials, which can buffer the instantaneous impact force and improve the service life of the first action member. Attached Figure Description

[0018] Figure 1 This is a perspective view of some components in an imaging device to which the developing cartridge of this utility model is applicable.

[0019] Figure 2A and Figure 2B This is a perspective view of the developing cartridge involved in Embodiment 1 of this utility model.

[0020] Figure 3 This is a perspective view of the developing cartridge involved in Embodiment 1 of this utility model from another angle.

[0021] Figure 4A This is a plan view of the developing cartridge involved in Embodiment 1 of this utility model, viewed along the longitudinal direction.

[0022] Figure 4B This is a plan view of the developing cartridge according to Embodiment 1 of this utility model after it has been installed in a predetermined position on the imaging device, viewed along the longitudinal direction.

[0023] Figure 5A This is a perspective view of the conductive end of the developing cartridge according to Embodiment 2 of this utility model.

[0024] Figure 5B This is a plan view of the developing box involved in Embodiment 2 of this utility model, viewed along the longitudinal direction.

[0025] Figure 6A and Figure 6B This is a perspective view of the developing cartridge involved in Embodiment 3 of this utility model.

[0026] Figure 7 This is a plan view of the developing cartridge involved in Embodiment 3 of this utility model, viewed along the longitudinal direction.

[0027] Figure 8A This is a plan view taken along the longitudinal direction when the developing cartridge and the photosensitive drum are separated, according to Embodiment 3 of this utility model.

[0028] Figure 8B This is a perspective view of the state of the developing cartridge and the photosensitive drum when they are separated, according to Embodiment 3 of this utility model.

[0029] Figure 9A and Figure 9B This is a perspective view of the developing cartridge involved in Embodiment 4 of this utility model.

[0030] Figure 10 This is an exploded view of the developing cartridge drive end cap and the support after separation, according to Embodiment 4 of this utility model.

[0031] Figure 11 This is an exploded view of the working mechanism in the developing cartridge according to Embodiment 4 of this utility model.

[0032] Figure 12 This is a side view of the developing cartridge involved in Embodiment 4 of this utility model, viewed along the longitudinal direction.

[0033] Figure 13 This is a perspective view of the clutch component in the developing cartridge according to Embodiment 5 of this utility model.

[0034] Figure 14A and Figure 14B This is an exploded view of the driving component in the developing cartridge according to Embodiment 5 of this utility model.

[0035] Figure 15A This is a perspective view of the developing cartridge drive end according to Embodiment 5 of this utility model.

[0036] Figure 15B This is the developing cartridge edge involved in Embodiment 5 of this utility model. Figure 15A A cross-sectional view after being cut along the AA direction.

[0037] Figure 16A This is a three-dimensional view of the driving end of the developing cartridge according to Embodiment 5 of this utility model after it has been installed in the imaging device.

[0038] Figure 16B The developing cartridge involved in Embodiment 5 of this utility model is installed into the imaging device and then moves along... Figure 16A A cross-sectional view after being cut along the AA direction.

[0039] Figure 17 This is a structural diagram of the functional components in the developing cartridge according to Embodiment Six of this utility model.

[0040] Figure 18 This is an exploded view of the functional components in the developing cartridge according to Embodiment Six of this utility model.

[0041] Figure 19 This is a perspective view of the clutch component in the developing cartridge according to Embodiment Six of this utility model.

[0042] Figure 20A This is a structural diagram of the working component when the clutch is in the first state according to Embodiment Six of this utility model.

[0043] Figure 20B This is a structural diagram of the functioning component when the clutch is in the second state according to Embodiment Six of this utility model.

[0044] Figure 21 This is an exploded view of the functional components in the developing cartridge according to Embodiment 7 of this utility model.

[0045] Figure 22 This is an exploded view of the driving component in a developing cartridge with a modified structure according to Embodiment 7 of this utility model.

[0046] Figure 23 This is a perspective view of the developing cartridge involved in Embodiment 8 of this utility model.

[0047] Figure 24 This is a side view of the developing cartridge involved in Embodiment 8 of this utility model, viewed along the longitudinal direction.

[0048] Figure 25 This is a perspective view of the driving end of the developing cartridge after the first end cover is hidden, according to Embodiment 9 of this utility model.

[0049] Figure 26 This is a perspective view of the developing cartridge involved in Embodiment 10 of this utility model.

[0050] Figure 27A and Figure 27B This is a schematic diagram of the hidden portion of the developing cartridge housing according to Embodiment Eleven of this utility model.

[0051] Figure 28 This is a schematic diagram of the working mechanism and connecting parts involved in Embodiment Eleven of this utility model. Detailed Implementation

[0052] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0053] [Imaging equipment]

[0054] like Figure 1As shown, the imaging device includes a main component (not shown), a photosensitive drum 200, and a support member. The photosensitive drum 200 is rotatably disposed relative to the main component and is used to form an electrostatic latent image on its surface. When the photosensitive drum 200 receives toner supplied by the developing roller 21, the electrostatic latent image is developed. The support member is movable relative to the main component and includes a first support member 201 and a second support member 202 disposed at a relative interval. A developing cartridge receiving portion 200a is formed between the first support member 201 and the second support member 202.

[0055] The first support member 201 is provided with a first guide rail 201c, and the second support member 202 is provided with a second guide rail 202c and multiple device-side contact portions. The developing cartridge can be guided, supported and positioned by the first guide rail 201c and the second guide rail 202c. The multiple device-side contact portions are used to form an electrical connection with the developing cartridge. Specifically, the multiple device-side contact portions are provided on the support member and include power output components and contact pins 202d. The power output components include a first power output component 202a and a second power output component 202b distributed on both sides of the second guide rail 202c.

[0056] Furthermore, each support component is also equipped with a movable limiting body, such as... Figure 1 As shown, the first support member 201 further includes a first limiting body 201f, which can move between an entry position into the first guide rail 201c and an exit position out of the first guide rail 201c by contacting an elastic member 201g; the second support member 202 further includes a second limiting body 202f, which can move between an entry position into the second guide rail 202c and an exit position out of the second guide rail 202c by contacting an elastic member 202g.

[0057] [Developer Box]

[0058] (Example 1)

[0059] The developing cartridge 100 includes a housing 1, a developing roller 21, a toner discharge blade 22, a first end cap 11, and a second end cap 12. The housing 1 has a toner receiving portion 10 for containing toner (e.g., ...). Figure 27A and Figure 27B As shown, the developing roller 21 is rotatably disposed in the housing 1 for carrying toner and has a rotation axis L extending in the longitudinal direction. The toner discharge knife 22 is fixedly disposed on the housing 1 for adjusting the thickness of the toner layer on the surface of the developing roller 21. The first end cap 11 and the second end cap 12 are respectively located at the two longitudinal ends of the housing 1.

[0060] Furthermore, the developing cartridge 100 also includes a driving force receiver 3, a chip 5, a first positioning part 6, and a second positioning part 8. The driving force receiver 3 is disposed at one end of the housing 1 and is used to receive driving force from the imaging device. The developing roller 21 rotates by directly or indirectly receiving the driving force from the driving force receiver 3. In the following text, along the longitudinal direction, the end where the driving force receiver 3 is disposed is the driving end F (left end), and the end opposite to the driving end is the conductive end E (right end). The chip 5 is provided with a plurality of electrical contacts 52 for contacting the stylus 202d to establish a communication connection between the developing cartridge 100 and the imaging device. The chip 5 / electrical contacts 52 can be disposed at any position between the driving end F or the conductive end E or between the driving end F and the conductive end E according to design requirements. The first positioning part 6 and the second positioning part 8 are used to position the developing cartridge 100 on the support member. At the same time, the first positioning part 6 is also used to push the support member to move relative to the photosensitive drum 200 along with the developing cartridge 100.

[0061] Specifically, the positions of the first positioning part 6 and the second positioning part 8 in the developing cartridge 100 should not be restricted. For example, the first positioning part 6 and the second positioning part 8 can both be provided on the end cap, or the first positioning part 6 and the second positioning part 8 can both be provided on the housing 1, or one of the first positioning part 6 and the second positioning part 8 can be provided on the end cap and the other can be provided on the housing 1.

[0062] Preferably, along the longitudinal direction, the first positioning part 6 includes a first left positioning part 61 disposed at the left end and a first right positioning part 62 disposed at the right end, and the second positioning part 8 includes a second left positioning part 81 disposed at the left end and a second right positioning part 82 disposed at the right end.

[0063] In one embodiment, the first left positioning part 61 and the second left positioning part 81 provided at the drive end F are integrally formed. When the developing cartridge 100 is developing, the drive end F has a larger vibration amplitude relative to the conductive end E. The integral formation of the first left positioning part 61 and the second left positioning part 81 will help reduce the vibration amplitude of the driving end of the developing cartridge.

[0064] In one embodiment, the integrally formed first left positioning portion 61 and second left positioning portion 81 can also be provided by an elastic element 130, such as a tension spring (e.g., Figure 3 (As shown) is connected to the housing 1 or the first end cap 11 and is movable relative to the housing 1. This structure allows the developing cartridge 100 to be installed and removed more easily.

[0065] Furthermore, the developing cartridge 100 also includes a power input 7 disposed at the conductive end E. The power input 7 has a power input portion 70 for receiving power by contacting the power output portion. At the same time, the power input 7 also supplies power to at least the developing roller 21. The power input portion 70 and the electrical contact portion can be collectively referred to as the cartridge-side contact portion. The cartridge-side contact portion is used to contact the device-side contact portion to form an electrical connection.

[0066] Furthermore, the developing cartridge 100 also includes an action mechanism 4. When the developing cartridge 100 is installed in the imaging device, and when the developing cartridge 100 needs to be developed, the action mechanism 4 receives a binding force applied by the imaging device to force the developing roller 21 and the photosensitive drum 200 to move closer to each other. When the developing cartridge 100 does not need to be developed, the action mechanism 4 receives a separation force from the imaging device. Subsequently, the separation force is transmitted to the support member through the housing 1, the end cap, and the first positioning part 6, thereby separating the developing roller 21 and the photosensitive drum 200 from each other. At the same time, the support member moves relative to the photosensitive drum 200 along with the developing cartridge 100. As the support member moves, the sensors provided in the imaging device are sensed, and the signal that the developing roller 21 and the photosensitive drum 200 are separated from each other can be obtained by the imaging device. Based on this, the imaging device can perform subsequent operations, such as cleaning the photosensitive drum 200 or calibrating the main components.

[0067] like Figure 3 As shown, the action mechanism 4 includes a first action member 41 and a first reset member 43 disposed at the drive end F, and a second action member 42 and a second reset member 44 disposed at the conductive end E. The first action member 41 is used to receive the bonding force applied by the imaging device in one direction and the separation force applied in another direction. The second action member 42 is also used to receive the bonding force applied by the imaging device in one direction and the separation force applied in another direction. The one direction and the other direction are opposite. The first reset member 43 and the second reset member 44 are respectively used to force the first action member 41 and the second action member 42 to reset.

[0068] In one embodiment, both the first reset member 43 and the second reset member 44 are configured as tension springs. Specifically, one end of the first action member 41 is provided with a rotating shaft for rotating the first action member 41, and the other end is used to receive the force applied by the imaging device. One end of the second action member 42 is provided with a rotating shaft for rotating the second action member 42, and the other end is used to receive the force applied by the imaging device. The first reset member 43 is connected to the two ends of the first action member 41, and the second reset member 44 is connected to the two ends of the second action member 42. When the first action member 41 and the second action member 42 receive a separation force, the first reset member 43 and the second reset member 44 are stretched. The rotating shaft can be configured as a solid shaft, or as a through hole or a blind hole. When viewed along the longitudinal direction, the first action member 41 is blocked by the first end cap 11, and the second action member 42 is blocked by the second end cap 12, thereby providing more effective protection for both the first action member 41 and the second action member 42.

[0069] like Figure 4A As shown, the power input device 7 in this embodiment includes a first power receiving device 7a and a power transmission device for supplying power to at least the developing roller 21. Specifically, the first power receiving device 7a is used to receive power by contacting the first power output device 202a. The power transmission device includes a first power transmission part 71 for transmitting power to the powder discharge blade 22 and a second power transmission part 72 for transmitting power to the developing roller 21. The first power transmission part 71 is connected to the powder discharge blade 22 and the first power receiving device 7a, and the second power transmission part 72 is connected to the developing roller 21 and the first power receiving device 7a. Therefore, only one power receiving device 7a is needed to simultaneously supply power to the developing roller 21 and the powder discharge blade 22.

[0070] Continue as Figure 4A As shown, when viewed along the longitudinal direction, at least one of the first positioning part 6 (including the first left positioning part 61 and the first right positioning part 62) and the second positioning part 8 (including the second left positioning part 81 and the second right positioning part 82) is located outside the region U1, which is the maximum area enclosed by the line connecting the edge of the cartridge side contact part and the center 21z of the developing roller 21. Specifically, line segment s1 connects the edge of the first power receiver 7a and the center 21z of the developing roller, line segment s2 connects the edge of the electrical contact part 52 and the center 21z of the developing roller, and line segment s3 connects the edge of the electrical contact part 52 and the edge of the first power receiver 7a.

[0071] like Figure 4BAs shown, after the developing cartridge 100 is installed into the imaging device, or in other words, when the developing cartridge 100 is accommodated by the developing cartridge receiving part 200a, when viewed from the conductive end E, the second limiting body 202f enters between the first right positioning part 62 and the second right positioning part 82. In this way, the developing cartridge 100 can be positioned in the imaging device. When the second actuating member 42 receives a separation force, the separation force is transmitted to the first right positioning part 62. Then, the first right positioning part 62 pushes the second support member 202 to move by pushing the second limiting body 202f. Similarly, at the driving end F, the first limiting body 201f is located between the first left positioning part 61 and the second left positioning part 81. The first left positioning part 61 can push the first support member 201 to move by pushing the first limiting body 201f.

[0072] As can be extended from this, the first actuating member 41 and the second actuating member 42 can not only be disposed on the housing 1, but also on the end cap.

[0073] The beneficial effects of this embodiment are:

[0074] 1. When the developing cartridge 100 or the imaging device is subjected to an external impact, even if the positioning component 6 vibrates, the impact on the cartridge-side contact portion can be reduced, thereby ensuring that the electrical connection between the cartridge-side contact portion and the corresponding device-side contact portion is stably maintained.

[0075] 2. The conductive terminal E is simplified by only needing to set up a power receiver 7 / 7a.

[0076] 3. For example Figure 1 As shown, when the first power output component 202a, the second power output component 202b, and the rotating part 201d are projected along the longitudinal direction, the distance between the second power output component 202b and the rotating part 201d will be greater than the distance between the first power output component 202a and the rotating part 201d. When the support member rotates around the rotating part 201d, the moving distance of the second power output component 202b will be greater than the moving distance of the first power output component 202a. In this embodiment, the power receiving component only needs to contact the first power output component 202a and does not need to contact the second power output component 202b. Therefore, the risk of the power input component 7 (first power receiving component 7a) and the first power output component 202a becoming detached from contact can be reduced in this embodiment.

[0077] (Example 2)

[0078] like Figure 5BAs shown, in this embodiment, the power input device 7 includes a second power receiving device 7b and a power transmission device for supplying power to at least the developing roller 21. Specifically, the second power receiving device 7b is used to receive power by contacting the second power output device 202b. The power transmission device includes a third power transmission part 73 for transmitting power to the powder exiting blade 22 and a fourth power transmission part 74 for transmitting power to the developing roller 21. The third power transmission part 73 is connected to the powder exiting blade 22 and the second power receiving device 7b, and the fourth power transmission part 74 is connected to the developing roller 21 and the second power receiving device 7b. Therefore, only one power receiving device 7b is needed to simultaneously supply power to the developing roller 21 and the powder exiting blade 22.

[0079] like Figure 5A As shown, when viewed along the longitudinal direction, at least one of the first positioning part 6 and the second positioning part 8 is located outside the region U2, which is the maximum area enclosed by the line connecting the edge of the cartridge side contact part and the center 21z of the developing roller 21. Specifically, line segment s1 connects the edge of the second power receiver 7b and the center 21z of the developing roller, line segment s2 connects the edge of the electrical contact part 52 and the center 21z of the developing roller, and line segment s3 connects the edge of the electrical contact part 52 and the edge of the second power receiver 7b.

[0080] Unlike Embodiment 1, in this embodiment, the first right positioning part 62 is configured to reciprocate along the longitudinal direction. During the installation of the developing cartridge 100, the first right positioning part 62 abuts against the second support member 202 and retracts. When the developing cartridge 100 is installed in the predetermined position, the first right positioning part 62 is no longer abutted and extends out, abutting against the second pushed part 202e on the second support member 202. At this time, at the conductive end E, the developing cartridge 100 is positioned by the first right positioning part 62 and the second right positioning part 82. At the driving end F, the first left positioning part 61 can be configured as described in Embodiment 1 or as described in this embodiment.

[0081] The beneficial effects of this embodiment are:

[0082] 1. When the developing cartridge 100 or the imaging device is subjected to an external impact, even if the positioning component 6 vibrates, the impact on the cartridge-side contact portion can be reduced, thereby ensuring that the electrical connection between the cartridge-side contact portion and the corresponding device-side contact portion is stably maintained.

[0083] 2. The conductive terminal E is simplified by only needing to set up a power receiver 7 / 7b.

[0084] (Example 3)

[0085] like Figure 6AAs shown, the power input device 7 in this embodiment is equipped with both the first power receiver 7a and the second power receiver 7b. When the developing cartridge 100 is installed in the imaging device, the first power receiver 7a contacts the first power output device 202a to receive power, and the second power receiver 7b contacts the second power output device 202b to receive power. Subsequently, the first power receiver 7a supplies power to one of the developing roller 21 and the powder exiting blade 22, and the second power receiver 7b supplies power to the other of the developing roller 21 and the powder exiting blade 22. However, it should be understood that the structure of the power input device 7 in the above embodiments one and two is also applicable to this embodiment.

[0086] In this embodiment, the first positioning part 6 and the second positioning part 8 are separately arranged, such as Figure 6A and Figure 6B As shown, the first positioning part 6 includes a first left positioning part 61 disposed at the driving end F and a first right positioning part 62 disposed at the conductive end E. The second positioning part 8 includes a second left positioning part 81 disposed at the driving end F and a second right positioning part 82 disposed at the conductive end E. At the driving end F, the first left positioning part 61 and the second left positioning part 81 are separately disposed. At the conductive end E, the first right positioning part 62 and the second right positioning part 82 are separately disposed. The first right positioning part 62 is configured to reciprocate along the longitudinal direction to facilitate the smooth installation of the developing cartridge 100.

[0087] like Figure 1 As shown, the first support member 201 is provided with a first pushed portion 201b, and the second support member 202 is provided with a second pushed portion 202e. During the installation of the developing cartridge 100, the second left positioning portion 81 and the second right positioning portion 82 enter the first guide rail 201c and the second guide rail 202c respectively. The first left positioning portion 81 passes over the first pushed portion 201b, and the first right positioning portion 82 abuts against the second support member 202 and retracts. When the developing cartridge 100 is installed in the predetermined position, at least a portion of the first left positioning portion 81 reaches a position closer to the photosensitive drum 200 than the first pushed portion 201b, and the first right positioning portion 82 is no longer abutted and extends out. At this time, the first left positioning portion 81 and the first pushed portion 201b may or may not contact each other, and the first right positioning portion 82 and the second pushed portion 202e may or may not contact each other. Furthermore, each cartridge-side contact portion contacts the corresponding device-side contact portion, such as... Figure 8A As shown, the electrical contact 52 of the chip 5 is in contact with the contact pin 202d, the first power receiver 7a is in contact with the first power output unit 202a, and the second power receiver 7b is in contact with the second power output unit 202b.

[0088] like Figure 7As shown, when viewed along the longitudinal direction, at least one of the first positioning part 6 and the second positioning part 8 is located outside the region U3, which is the maximum area enclosed by the line connecting the edge of the cartridge side contact part and the center 21z of the developing roller 21. Specifically, line segment s1 connects the edge of the first power receiver 7a and the center 21z of the developing roller, line segment s2 connects the edge of the electrical contact part 52 and the center 21z of the developing roller, line segment s3 connects the edge of the electrical contact part 52 and the edge of the second power receiver 7b, and line segment s4 connects the edge of the first power receiver 7a and the edge of the second power receiver 7b.

[0089] The beneficial effects of this embodiment are:

[0090] 1. When the developing cartridge 100 or the imaging device is subjected to an external impact, even if the positioning component 6 vibrates, the impact on the cartridge-side contact portion can be reduced, thereby ensuring that the electrical connection between the cartridge-side contact portion and the corresponding device-side contact portion is stably maintained.

[0091] 2. The first left positioning part 61 and the first pushed part 201b are in contact with each other by abutting each other. Along the direction of the developing cartridge 100 away from the photosensitive drum 200, the first left positioning part 61 and the first pushed part 201b are engaged with each other, so that the first support member 201 can be pushed more stably.

[0092] When the imaging device applies a separation force to the action mechanism 4, such as Figure 8B As shown, the first left positioning part 61 moves away from the photosensitive drum 200 along with the housing 1. At the same time, the first left positioning part 61 pushes the first pushed part 201b, and the first right positioning part 62 also moves away from the photosensitive drum 200 along with the housing 1. At the same time, the first right positioning part 62 pushes the second pushed part 202e. In this way, the first support member 201 and the second support member 202 also move away from the photosensitive drum 200 along with the housing 1, and the developing roller 21 and the photosensitive drum 200 separate from each other.

[0093] In some implementations, the support member moves by rotation, such as... Figure 1 As shown, the first support member 201 is also provided with a rotating part 201d; in other possible implementations, the movement of the support member can also be translational.

[0094] In some embodiments, the actuating mechanism 4 may also be configured such that, when viewed along the longitudinal direction, at least one of the first actuating element 41 and the second actuating element 42 is not obscured by the corresponding end cap.

[0095] In some embodiments, the first left positioning part 61 and the first right positioning part 62 can both be integrally formed with the corresponding end cap, or one of the first left positioning part 61 and the first right positioning part 62 can be separately formed with the corresponding end cap. In this case, the first left positioning part 61 and the first right positioning part 62 can be telescopically arranged relative to the housing 1, or fixedly arranged relative to the housing 1.

[0096] In some embodiments, the second positioning part 8 may also be configured to reciprocate along the longitudinal direction, thereby facilitating the smooth installation of the developing cartridge 100. That is, at least one of the first positioning part 6 and the second positioning part 8 may be configured to reciprocate along the longitudinal direction.

[0097] In some embodiments, when at least one of the first positioning part 6 and the second positioning part 8 is configured to reciprocate along the longitudinal direction, a triggering mechanism (not shown) may also be provided in the developing cartridge 100. Before the developing cartridge 100 is installed, or during the installation process, at least one of the first positioning part 6 and the second positioning part 8 is in a retracted state. When the developing cartridge 100 reaches a predetermined position, the triggering mechanism is triggered, and at least one of the first positioning part 6 and the second positioning part 8 moves from the retracted state to the extended state. When the developing cartridge 100 needs to be removed, the triggering mechanism is triggered again, and at least one of the first positioning part 6 and the second positioning part 8 moves from the extended state to the retracted state. It can be seen that at least one of the first positioning part 6 and the second positioning part 8 is configured to extend and retract along the longitudinal direction.

[0098] (Example 4)

[0099] like Figures 9A-9B As shown, the developing cartridge 100 includes an action mechanism 4 for receiving contact and separation forces applied by the imaging device. The contact force forces the developing roller 21 into contact with the photosensitive drum 200, and the separation force forces the developing roller 21 to separate from the photosensitive drum 200. The drum cartridge with the photosensitive drum 200 can be pre-installed in the imaging device or detachably installed in the imaging device. The action mechanism 4 includes a first action member 41 located at the drive end F. The first action member 41 is configured to move relative to the housing 1. Specifically, the first action member 41 rotates about an axis intersecting the longitudinal direction. Figure 10As shown, the developing cartridge 100 also includes a bracket 13 located at the drive end F. The bracket 13 is used to support rotating components such as the developing roller 21. The drive end F is also provided with a first abutting part 132 and abutting part 133. The first abutting part 132 and the second abutting part 133 are used to cooperate with the first actuating member 41. Along the longitudinal direction, the first abutting part 132 and the second abutting part 133 extend to the left from at least one of the housing 1, the first end cover 11 and the bracket 13. The first actuating member 41 can be provided on any one of the first end cover 11, the bracket 13 and the housing 1 in a shaft-hole cooperation manner.

[0100] like Figure 11As shown, the first actuating member 41 has a first portion 411 for receiving contact force applied by the imaging device and a second portion 412 for receiving separation force applied by the imaging device. The first portion 411 is movable relative to the housing 1. Specifically, the first portion 411 has a first body 4110 and a first engaging portion 4111 formed on the first body 4110. The second portion 412 has a second body 4120 and a first engaged portion 4121 formed on the second body 4120 for engaging with the first engaging portion 4111. Through the engagement of the first engaging portion 4111 and the first engaged portion 4121, the first portion 411 can rotate around the first engaged portion 4121. When either part 411 or part 412 is subjected to force, part 411 and part 412 can move together; part 412 is movable relative to housing 1. Specifically, part 412 further has a first abutting portion 4122, a second connecting portion 4123, and a second abutting portion 4124 formed on its main body. The first abutting portion 4122 is used to abut against the first abutted portion 132 to transmit the contact force from part 412 to housing 1; the second abutting portion 4124 is used to abut against the second abutted portion 133 to transmit the separation force from part 412 to housing 1; the driving end F is also provided with a second connected portion 131 for cooperating with the second connecting portion 4123; the second The connecting portion 4123 is used to cooperate with the second connected portion 131, so that the second part 412 can rotate around the second connected portion 131; the second part 412 also includes a separation force receiving portion 412a and a swing portion 412b, the separation force receiving portion 412a is used to receive the separation force applied by the imaging device to separate the developing roller 21 from the photosensitive drum 200, and as the second part 412 rotates, the swing portion 412b cooperates with components other than the second part 412; the first actuating member 41 also includes a first elastic member 413 disposed between the first part 411 and the separation force receiving portion 412a, the first elastic member 413 being used at least to transmit contact force; preferably, the separation force receiving portion 412a and the swing portion 412b are respectively disposed at both ends of the second main body 4120. The first elastic element 413 can be configured as a compression spring or rubber, etc., and the first abutment part 4122 is configured as a protruding structure. The action mechanism 4 also includes a second action element 42 located at the conductive end E. The second action element 42 is symmetrically disposed with the first action element 41, and the second action element 42 has the same structure as the first action element 41. The second action element 42 also includes a second elastic element, which is used at least to transmit contact force. When the first action element 41 and the second action element 42 receive the contact force applied by the imaging device, the elastic forces generated by the first elastic element 413 and the second elastic element are different, and the elastic force of the first elastic element 413 is greater than that of the second elastic element.

[0101] In some embodiments, the first elastic member 413 can also be used to transmit separation force. Specifically, the separation force receiving part 412a receives the separation force applied by the imaging device, which is transmitted to the first part 411 through the first elastic member 413. The first part 411 abuts against the second abutting part 133, thereby driving the developing cartridge 100 to move away from the photosensitive drum 200.

[0102] In some embodiments, the first part 411 and the second part 412 of the first actuating member 41 are formed separately, the first part 411 being made of a rigid material and the second part 412 being made of a plastic material.

[0103] In some embodiments, the first part 411 and the second part 412 of the first actuating member 41 are integrally formed. Preferably, the first part 411 is configured to be movable relative to the second part 412, so that the instantaneous impact force on the first actuating member 41 is reduced, and the movement of the developing cartridge can be made smoother.

[0104] Accordingly, the first action member 41 can also be configured such that, apart from the first elastic member 413, only the first part 411 is movable relative to the second part 412 / shell 1, which can also reduce the instantaneous impact force on the first action member 41 and make the movement of the developing cartridge more stable.

[0105] In some embodiments, the joint and the joined part are connected by a shaft hole fitting.

[0106] In some embodiments, the first mating portion 4111 is configured as a first mating hole formed on the first body 4110, and the first mating portion 4121 is configured as a first partial rotating shaft formed on the second body 4120.

[0107] In some embodiments, the first coupling portion 4111 is configured as a first partial rotating shaft formed on the first body 4110, and the first coupling portion 4121 is configured as a first mating hole formed on the second body 4120.

[0108] In some embodiments, the second mating portion 4123 is configured as a second mating hole formed on the second body 4120, and the second mating portion 131 is configured as a second part of the rotating shaft extending on at least one of the housing 1 and the bracket 13.

[0109] In some embodiments, the second coupling portion 4123 is configured as a second partial rotating shaft formed on the second body 4120, and the second coupling portion 131 is configured as a second mating hole formed on at least one of the housing 1 and the bracket 13.

[0110] After the developing cartridge 100 is installed in the imaging device, when the developing cartridge 100 performs developing operations, the pushing mechanism in the imaging device applies a contact force to the first part 411 of the first actuating member 41, such as... Figure 10 As shown, after receiving the contact force, the first part 411 is forced to rotate counterclockwise N around the first joined part 4121 (e.g., Figure 12 As shown), the contact force received by the first part 411 is transmitted to the second part 412 through the first elastic member 413. The first elastic member 413 deforms under force and presses the separation force receiving part 412a of the second part 412, causing the second part 412 to rotate counterclockwise around the second joined part 131. During the rotation, the first abutting part 4122 of the second part 412 abuts against the first abutted part 132, thereby driving the developing cartridge 100 to move closer to the photosensitive drum 200, so as to realize the contact between the developing roller 21 and the photosensitive drum 200.

[0111] When the developing cartridge 100 does not need to develop, the pushing mechanism in the imaging device applies a separation force in the opposite direction to the contact force to the first action member 41. After receiving the separation force, the separation force receiving part 412a of the second part 412 rotates clockwise around the second contact part 131. During the rotation, the second abutting part 4124 of the second part 412 abuts against the second abutting part 133, thereby driving the developing cartridge 100 to move away from the photosensitive drum 200, realizing the separation of the developing roller 21 from the photosensitive drum 200, avoiding the irreversible deformation of the developing roller 21 or the contamination of the surface of the photosensitive drum 200 by toner due to long-term contact between the developing roller 21 and the photosensitive drum 200. The separation force received by the second part 412 is transmitted to the first part 411 through the first elastic member 413, so that the first part 411 returns to its initial position.

[0112] like Figure 12 As shown, the developing cartridge 100 also includes a chip 5 for storing relevant parameter information of the developing cartridge 100. Observing the developing cartridge 100 from the drive end F side along the rotation axis direction (longitudinal direction) of the developing roller 21, when the developing cartridge 100 is in the posture where the first actuating member 41 and the chip 5 are located at the lower part of the developing cartridge 100, the first actuating member 41 is not exposed outside the developing cartridge 100 and is covered by the first end cap 11. Similarly, observing the developing cartridge 100 from the conductive end E side along the rotation axis direction of the developing roller 21, when the developing cartridge 100 is in the posture where the first actuating member 41 and the chip 5 are located at the lower part of the developing cartridge 100, the second actuating member 42 is not exposed outside the developing cartridge 100 and is covered by the second end cap 12.

[0113] In the developing cartridge 100 involved in this embodiment, the first functional member 41 and the second functional member 42 can be more effectively protected. During transportation or installation, the developing cartridge 100 can avoid damage caused by collision between the first functional member 41 or the second functional member 42 and other components.

[0114] (Example 5)

[0115] like Figure 13 , Figure 14A , Figure 14B , Figure 15A , Figure 15B , Figure 16A as well as Figure 16B As shown, the fifth embodiment of this application will be introduced next. The parts that are the same as those in the above embodiments will not be repeated in this embodiment.

[0116] like Figure 14A and Figure 14B As shown, the developing cartridge 100 is further provided with a driving assembly 3 for receiving rotational driving force. The driving assembly 3 is used to directly or indirectly drive rotating components such as the developing roller 21 to rotate. The driving assembly 3 is separately arranged and includes a first driving force receiving part 31, a moving member 32, a driving force transmitting part 33, a third elastic member 34, and a driving part 35. The first driving force receiving part 31 is used to receive the rotational driving force output by the imaging device. The moving member 32 is used to drive the driving force transmitting part 33 to move toward the driving part 35. The driving force transmitting part 33 is used to transmit the rotational driving force received by the first driving force receiving part 31. The driving force is transmitted to the driving part 35 to drive the driving part 35 to rotate; the third elastic member 34 is used to apply an elastic force separate from the driving part 35 to the driving force transmission part 33; the driving part 35 is used to directly or indirectly drive the rotating part to rotate, and the first driving force receiving part 31 is configured to be linked with the actuating mechanism. The first driving force receiving part 31 and the driving part 35 switch between a connected position and a disconnected position. In the connected position, the first driving force receiving part 31 can drive the driving part 35 to rotate, and in the disconnected position, the first driving force receiving part 31 cannot drive the driving part 35 to rotate.

[0117] The driving part 35 is provided with a second driving force receiving part 351 and a second receiving part 352 for accommodating a third elastic member 34. The driving force transmitting part 33 has a avoidance part 332 for avoiding the driving force receiving part 351 and a first receiving part 331 for accommodating the third elastic member 34. The avoidance part 332 has a force application surface 333 for abutting against the second driving force receiving part 351.

[0118] In some embodiments, the first receiving portion 331 and the second receiving portion 352 are opposite to each other, the first driving force receiving portion 31 is movably connected to the driving force transmitting portion 33; the moving member 32 is disposed between the first driving force receiving portion 31 and the driving force transmitting portion 33; the driving force transmitting portion 33 is disposed between the moving member 32 and the driving portion 35; the third elastic member 34 is disposed between the driving force transmitting portion 33 and the driving portion 35, and the driving force transmitting portion 33 can be detachably coupled to the driving portion 35.

[0119] like Figure 13 As shown, the developing cartridge 100 also includes a clutch 6m that switches between a first state and a second state. In the first state, the driving part 35 does not rotate with the first driving force receiving part 31; in the second state, the driving part 35 rotates with the first driving force receiving part 31. The clutch 6m has a clutch body 6m0 and a third engagement part 6m3 formed on the clutch body 6m0, as shown in the figure. Figure 10 As shown, the developing cartridge 100 also includes a third coupled portion 14 that cooperates with the third coupled portion 6m3. The cooperation between the third coupled portion 6m3 and the third coupled portion 14 allows the clutch 6m to rotate around the third coupled portion 14. The clutch 6m also has a first end 6m1 and a second end 6m2 located at both ends of the clutch body 6m0. The first end 6m1 is used to cooperate with the swing portion 412b of the second part 412. Specifically, the first end 6m1 is provided with a second guide slope 6m11, which is used to cooperate with the first actuating member 41 to force the clutch 6m to rotate in the longitudinal direction. Figure 11 As shown, the swing portion 412b of the second part 412 has a first guide slope 412c that cooperates with the second guide slope 6m11; the second end 6m2 is used to cooperate with the moving member 32 of the drive assembly 3 and is located between the drive force receiving portion 31 and the moving member 32, for driving the moving member 32 to move toward the drive portion 35, so that it moves in the longitudinal direction.

[0120] In some embodiments, the third engagement portion 6m3 is configured as a third mating hole formed on the clutch body 6m0, and the third engaged portion 14 is configured as a third rotating shaft formed on any one of the housing 1, the first end cap 11, and the bracket 13.

[0121] In some embodiments, the third coupling portion 6m3 is configured as a third rotating shaft formed on the clutch body 6m0, and the third coupling portion 14 is configured as a third mating hole formed on any one of the housing 1, the first end cap 11, and the bracket 13.

[0122] When the developing cartridge 100 is not installed in the imaging device, such as Figure 15A and 15BAs shown, the moving member 32 and the driving force transmission part 33 are both in the initial position, the clutch 6m is in the first state, the clutch 6m does not apply pressure to the moving member 32, the driving force receiving part 351 does not enter the avoidance part 332, and the driving force transmission part 33 and the driving force receiving part 351 of the driving part 35 do not contact each other in the circumferential direction.

[0123] When the developing cartridge 100 is installed in the imaging device, and the developing cartridge 100 is performing developing operations, such as Figure 16A and 16B As shown, the pushing mechanism 90 in the imaging device applies a contact force to the first part 411 of the first actuating member 41. The contact force received by the first part 411 is transmitted to the separation force receiving part 412a of the second part 412 through the first elastic member 413, causing the second part 412 to rotate counterclockwise N around the second engaged part 131. During the rotation of the second part 412, the first guide inclined surface 412c located in the swing part 412b engages with the second guide inclined surface 6m11, and the clutch member 6m changes from the first state to the second state, thereby applying a pressing force (one embodiment of the force) to the moving member 32. Along the longitudinal direction, the moving member 32 drives the driving force transmission part 33 to move toward the driving part 35, the third elastic member 34 is compressed, the driving force receiving part 351 enters the avoidance part 332, the driving force transmission part 33 and the driving force receiving part 351 are at least partially in contact in the circumferential direction. In this state, the first driving force receiving part 31 receives the rotational driving force output by the imaging device. During the process of driving the driving force transmission part 33 connected to it to rotate, the force application surface 333 abuts against the driving force receiving part 351, and transmits the rotational driving force to the second driving force receiving part 351, thereby driving the driving part 35 to rotate.

[0124] In some embodiments, the clutch 6m applies a pulling force to the moving member 32 (another embodiment of the force), and the moving member 32 is pulled by the clutch 6m, thereby driving the driving force transmission part 33 to move in a direction closer to the driving part 35.

[0125] Preferably, at the same moment that the developing roller 21 contacts the photosensitive drum 200, the driving assembly 3 drives the developing roller 21 to rotate, which can avoid the development roller 21 from being worn out due to long-term rotation and the toner attached to it from contaminating other components.

[0126] When the developing cartridge 100 does not need to perform developing operations, the pushing mechanism 90 applies a separation force to the second part 412 of the first actuating member 41. After receiving the separation force, the separation force receiving part 412a of the second part 412 forces the second part 412 to rotate in the clockwise direction M. The clockwise direction M is opposite to the counterclockwise direction N. The first guide slope 412c disengages from the second guide slope 6m11, causing the clutch member 6m to return from the second state to the first state. The second end 6m2 of the clutch member 6m no longer applies pressure to the moving member 32. The driving force transmission part 33 returns to its initial position under the elastic action of the third elastic member 34 and disengages from the driving force receiving part 351 of the driving part 35.

[0127] As described above, in the action mechanism 4 of this utility model, the first part 411 of the first action member 41 is configured to be movable relative to the second part 412, thereby reducing the instantaneous impact force on the first action member 41 and making the movement of the developing cartridge more stable. When the developing cartridge 100 is observed in the longitudinal direction, its first action member 41 and second action member 42 are respectively covered by the first end cover 11 and the second end cover 12, so that the first action member 41 and the second action member 42 can be more effectively protected and avoid collision with other components and damage. When the developing cartridge 100 is performing developing work, the rotational driving force received by the first driving force receiving part 31 is transmitted to the developing roller 21 to drive the developing roller 21 to rotate, avoiding the wear and tear caused by the long-term rotation of the developing roller 21 and the contamination of other components by the toner attached to it.

[0128] (Example 6)

[0129] like Figure 17 , Figure 18 , Figure 19 , Figure 20A and Figure 20B As shown, the following will introduce Embodiment Six of this application. The similarities with the above embodiments will not be repeated in this embodiment. The difference from the above embodiments is that the movement mode and structure of the clutch 6m are different.

[0130] like Figure 17 and Figure 18As shown, in this embodiment, the first connecting portion 4111 and the second connecting portion 4123 of the first actuating member 41 simultaneously cooperate with the second connected portion 131, so that both the first portion 411 and the second portion 412 can rotate around the second connected portion 131. The first actuating member 41 also includes a first elastic member 413 disposed between the first portion 411 and the second portion 412. The first elastic member 413 is used to transmit the force applied by the pushing mechanism 90. The first portion 411 and the second portion 412 can swing coaxially. Preferably, the first portion 411 and the second portion 412 are both made of rigid material. At this time, the structure of the first actuating member 41 is effectively simplified, and the rigid material enhances the stress strength of the connecting portion and improves the service life.

[0131] like Figure 17 , Figure 18 As shown, in this embodiment, the developing cartridge 100 has a clutch 6m for controlling the separation and engagement of internal components of the drive assembly 3. The clutch 6m can switch between a first state and a second state. In the first state, the drive unit 35 does not rotate with the first drive force receiving unit 31, and the internal components of the drive assembly 3 are in a separated state. In the second state, the drive unit 35 rotates with the first drive force receiving unit 31, and the internal components of the drive assembly 3 are in an engaged state. The drive unit 35 has a driven state and a non-driven state. In the driven state, along the circumferential direction of the drive force transmission unit 33, the drive unit 35 abuts against the drive force transmission unit 33, and the drive unit 35 can receive the rotational drive force from the first drive force receiving unit 31. In the non-driven state, along the circumferential direction of the drive force transmission unit 33, the drive unit 35 does not abut against the drive force transmission unit 33, and the drive unit 35 cannot receive the rotational drive force from the first drive force receiving unit 31.

[0132] In this embodiment, the clutch 6m transitions between a first state and a second state through a smooth movement, thereby reducing the longitudinal dimension of the developing cartridge 100; specifically, as shown... Figure 17 and Figure 19As shown, the clutch 6m has a clutch body 6m0 and a third engaging portion 6m3 formed on the clutch body 6m0. The developing cartridge 100 / house 1 / first end cap 11 / support 13 also includes a third engaged portion 14 that cooperates with the third engaging portion 6m3. The cooperation between the third engaging portion 6m3 and the third engaged portion 14 allows the clutch 6m to move smoothly along the third engaged portion 14. Preferably, the third engaging portion 6m3 is configured as a guide groove, and the engaged portion 14 is configured as a pivot. In a direction intersecting the longitudinal direction (e.g., a direction perpendicular to the longitudinal direction), the guide groove and the pivot are slidably engaged. The clutch 6m also has a first end 6m1 and a second end 6m2 located at both ends of the clutch body 6m0. The first end 6m1 is used to cooperate with the swing portion 412b of the second part 412 to force the clutch 6m to move with the rotation of the first actuating member 41, thereby driving The clutch 6m moves smoothly along the third engaged portion 14; the second end 6m2 is used to cooperate with the moving member 32 of the drive assembly 3, and is used to drive the moving member 32 to move towards the drive portion 35 in the longitudinal direction, so that the drive force transmission portion 33 is engaged with the drive portion 35. Specifically, the second end 6m2 has a third guide slope 6m20 for cooperating with the moving member 32. The moving member 32 has a first main body portion 320 and at least one engaged portion 321 formed on the first main body portion 320 for cooperating with the second end 6m2. The engaged portion 321 has a fourth guide slope 322 for cooperating with the third guide slope 6m20. By the contact between the third guide slope 6m20 and the fourth guide slope 322, the clutch 6m presses the moving member 32, so that the moving member 32 moves towards the drive portion 35, and the clutch 6m changes from the first state to the second state.

[0133] The drive assembly 3, the first actuating element 41, and the clutch 6m can be referred to as the actuating assembly. The actuating assembly is used to receive the force applied by the pushing mechanism 90, causing the clutch 6m to switch between a first state and a second state, thereby causing the internal components of the drive assembly 3 to switch between a separated state and a coupled state, and further causing the developing roller 21 and the photosensitive drum 200 to switch between a state of being close to each other and a state of being separated from each other. Further, in the first state, the drive assembly 3 cannot transmit driving force to the developing roller 21, the internal components of the drive assembly 3 are in a separated state, and the developing roller 21 and the photosensitive drum 200 are in a state of being separated from each other. In the second state, the drive assembly 3 can transmit driving force to the developing roller 21, the internal components of the drive assembly 3 are in a coupled state, and the developing roller 21 and the photosensitive drum 200 are in a state of being close to each other.

[0134] In some embodiments, the second end 6m2 of the clutch 6m can be configured as a U-shaped part, or as an L-shaped part or an I-shaped part, as long as the second end 6m2 can force the moving member 32 to move in the longitudinal direction.

[0135] In some embodiments, the movable member 32 is disposed on the first end cap 11 / housing 1, and the movable member 32 further has a through hole 323 formed on the first main body 320 and a guide hole 324 for guiding the first driving force receiving part 31 (e.g. Figure 18 As shown, the second end 6m2 of the clutch 6m is guided into the through hole 323 or the guide hole 324 by the third guide slope 6m20 abutting against the fourth guide slope 322. Thus, the clutch 6m can directly press (contact) the driving force transmission part 33, so that the driving force transmission part 33 engages with the driving part 35. In this case, it is no longer necessary to press the driving force transmission part and the driving part 35 to engage by the moving member 32. The structure of the driving component 3 is simplified, and the force transmission is more efficient. It can be seen that when the moving member 32 is provided in the first end cover 11, the second end 6m2 of the clutch 6m is exposed from one side of the first end cover 11 to the other side in the longitudinal direction. The second end 6m2 can move through the first end cover 11 or move inside the first end cover 11.

[0136] In some embodiments, the movable member 32 may be integrally formed with the first end cap 11 / shell 1, or it may be separately formed from the first end cap 11 / shell 1.

[0137] In some embodiments, the developing cartridge 100 does not have a moving component 32. The second end 6m2 of the clutch 6m directly drives the driving force transmission part 33 to move toward the driving part 35, thereby engaging the driving force transmission part 33 with the driving part 35, further simplifying the structure of the driving assembly 3 and making the force transmission more efficient.

[0138] In some embodiments, when the rotation axis of the clutch 6m (i.e., the center line of the third engaged portion / pivot 14) is neither parallel to nor perpendicular to the longitudinal direction, the second end 6m2 of the clutch 6m will be closer to the fourth guide ramp 322. This design helps to reduce the tilt angle of the fourth guide ramp 322 or reduce the tilt angle of the third guide ramp 6m20, thereby making the movement of the clutch 6m smoother.

[0139] like Figure 18 As shown, in this embodiment, the drive assembly 3 further includes a protrusion 311, and the drive force transmission part 33 has a second main body part 330 and a first connecting part 334 formed on the second main body part 330. The first connecting part 334 is used to cooperate with the protrusion 311 to rotate together with the first drive force receiving part 31.

[0140] In some embodiments, the protrusion 311 may be integrally formed with the first driving force receiving part 31, or it may be separately formed from the first driving force receiving part 31.

[0141] When the developing cartridge 100 is not installed in the imaging device, such as Figure 18 and Figure 20A As shown, the moving component 32 and the driving force transmission part 33 are both in the initial position, the clutch 6m is in the first state, the clutch 6m does not apply pressure to the moving component 32, at this time, the driving force receiving part 351 does not enter the avoidance part 332, and the driving force transmission part 33 and the driving force receiving part 351 of the driving part 35 do not contact each other in the circumferential direction.

[0142] When the developing cartridge 100 is installed in the imaging device, and the developing cartridge 100 is performing developing operations, such as Figure 20A and 20B As shown, the pushing mechanism 90 in the imaging device applies a contact force to the first part 411 of the first actuating member 41. This contact force forces the developing roller 21 and the photosensitive drum 200 into contact. After receiving the contact force, the first part 411 rotates counterclockwise N around the second coupled part 131 and transmits the force to the second part 412 through the first elastic member 413, causing the second part 412 to also rotate counterclockwise N around the second coupled part 131. During the rotation of the second part 412, the swing part 412b cooperates with the first end 6m1, pushing the first end 6m1 to translate away from the driving assembly 3. At the same time, the third coupled part 6m3 also cooperates with the third coupled part 14, causing the clutch member 6m to move smoothly in a direction intersecting the longitudinal direction, thus engaging and disengaging the clutch. When clutch 6m transitions from the first state to the second state, the second end 6m2 of clutch 6m applies pressure to the moving member 32. In the longitudinal direction, the moving member 32 drives the driving force transmission part 33 to move towards the driving part 35. Alternatively, the second end 6m2 of clutch 6m directly applies pressure to the driving force transmission part 33, causing the third elastic member 34 to be compressed. The driving force receiving part 351 enters the avoidance part 332. The driving force transmission part 33 and the driving force receiving part 351 are at least partially in contact in the circumferential direction. In this state, the first driving force receiving part 31 receives the rotational driving force output by the imaging device. Through the protrusion 311 and the first connecting part 334, the driving force transmission part 33 rotates with the first driving force receiving part 31, thereby driving the driving part 35 to rotate.

[0143] When the developing cartridge 100 does not require developing, the pushing mechanism 90 applies a separation force to the second part 412 of the first action member 41. The separation force is used to force the developing roller 21 and the photosensitive drum 200 to separate from each other. After receiving the separation force, the second part 412 is forced to rotate clockwise in the M direction. The clutch member 6m moves smoothly in the direction intersecting the longitudinal direction until the third guide slope 6m20 and the fourth guide slope 322 disengage and abut, so that the clutch member 6m returns from the second state to the first state. The second end 6m2 of the clutch member 6m no longer applies pressure to the moving member 32 / driving force transmission part 33. The driving force transmission part 33 returns to its initial position under the elastic action of the third elastic member 34 and disengages from the driving force receiving part 351 of the driving part 35.

[0144] As described above, the clutch 6m involved in this utility model, by smoothly moving in a direction intersecting the longitudinal direction, forces the driving part 35 to rotate together with the first driving force receiving part 31, or the driving part 35 does not rotate together with the first driving force receiving part 31, thereby reducing the size of the developing cartridge 100 in the longitudinal direction; at the same time, the structure of the first actuating member 41 is further optimized, making the force transmission more efficient. During the process of installing the developing cartridge 100 into the imaging device, since the driving part 35 does not rotate together with the first driving force receiving part 31, even if the first driving force receiving part 31 interferes with the driving head in the imaging device, the first driving force receiving part 31 can avoid it by rotating itself.

[0145] (Example 7)

[0146] like Figure 21 and Figure 22 As shown, the following will introduce Embodiment Seven of this application. The parts that are the same as those in Embodiment Six above will not be repeated in this embodiment. The difference from the above embodiments is that the structure of the driving component 3 is different.

[0147] like Figure 21As shown, in this embodiment, the driving assembly 3 includes a first driving force receiving part 31, a moving member 32, and a driving part 35. The first driving force receiving part 31 is used to receive the rotational driving force output by the imaging device, and the moving member 32 is used to drive at least a portion of the first driving force receiving part 31 to move toward the driving part 35. The driving part 35 is used to directly or indirectly drive the developing roller 21 to rotate. The driving assembly 3 is provided with a protrusion 311 and a fourth elastic member 312. The fourth elastic member 312 is used to force the protrusion 311 to move away from the driving part 35. The driving part 35 has a driven state and a non-driven state. In the driven state, along the circumferential direction of the first driving force receiving part 31, the driving part 35 abuts against the protrusion 311, and the driving part 35 can receive the rotational driving force of the first driving force receiving part 31. In the non-driven state, along the circumferential direction of the first driving force receiving part 31, the driving part 35 does not abut against the protrusion 311, and the driving part 35 cannot receive the rotational driving force of the first driving force receiving part 31.

[0148] The first driving force receiving part 31 is also provided with a receiving groove 313, and the protrusion 311 and the fourth elastic member 312 are both located in the receiving groove 313. The moving member 32 is used to cooperate with the protrusion 311. The driving part 35 has a third main body part 350 and a second connecting part 353 formed on the third main body part 350. The second connecting part 353 is used to cooperate with the protrusion 311, so that the driving part 35 directly follows the protrusion 311 to rotate, and the structure of the driving assembly 3 can be simplified.

[0149] When the developing cartridge 100 is not installed in the imaging device, the clutch 6m is in the first state, and the clutch 6m does not apply pressure to the moving member 32. At this time, under the elastic force of the fourth elastic member 312, the protrusion 311 and the second connecting part 353 do not contact each other in the circumferential direction.

[0150] With the developing cartridge 100 installed in the imaging device, the second end 6m2 of the clutch 6m applies pressure to the moving member 32. In the longitudinal direction, the moving member 32 presses the protrusion 311, thereby driving the protrusion 311 to move towards the drive unit 35. The fourth elastic member 312 is compressed, and the protrusion 311 abuts against the second connecting part 353. The protrusion 311 and the second connecting part 353 are at least partially in contact in the circumferential direction. In this state, the first driving force receiving part 31 receives the rotational driving force output by the imaging device. Through the cooperation of the protrusion 311 and the second connecting part 353, the drive unit 35 is directly driven to rotate. Preferably, the fourth elastic member 312 can be a spring, compression spring, tension spring, sponge, or rubber, etc.

[0151] When the developing cartridge 100 does not require developing, the clutch 6m moves smoothly along the direction intersecting the longitudinal direction until the third guide slope 6m20 and the fourth guide slope 322 disengage, causing the clutch 6m to return from the second state to the first state. The second end 6m2 of the clutch 6m no longer applies pressure to the moving member 32, and the protrusion 311 returns to its initial position under the elastic force of the fourth elastic member 312, disengaging from the second connecting member 353 of the driving part 35. The driving part 35 no longer rotates with the first driving force receiving part 31.

[0152] In some embodiments, the movable member 32 is disposed on the first end cover 11 / housing 1 and abuts against the fourth guide slope 322 via the third guide slope 6m20. The second end 6m2 of the clutch member 6m is guided into the through hole 323 or the guide hole 324, so that the clutch member 6m can directly press (contact) the protrusion 311, so that the protrusion 311 engages with the drive part 35. In this case, it is no longer necessary to press the protrusion 311 to engage with the drive part 35 through the movable member 32, and the structure of the drive assembly 3 is further simplified, making the force transmission more efficient. It can be seen that when the movable member 32 is disposed on the first end cover 11, the second end 6m2 of the clutch member 6m is exposed from one side of the first end cover 11 to the other side in the longitudinal direction. The second end 6m2 can move through the first end cover 11 or move inside the first end cover 11.

[0153] In some embodiments, the developing cartridge 100 does not have a moving component 32. The second end 6m2 of the clutch 6m directly drives the protrusion 311 to move toward the driving part 35, thereby engaging the protrusion 311 with the driving part 35, further simplifying the structure of the driving assembly 3 and making force transmission more efficient.

[0154] In some implementations, such as Figure 22 As shown, the receiving groove 313 is connected to the end of the first driving force receiving part 31 away from the driving part 35.

[0155] As described above, in the drive assembly 3 of the present invention, the first drive force receiving part 31 can directly drive the drive part 35 to rotate, eliminating the need for a drive force transmission part 33 for transmitting drive force, thus simplifying the structure of the drive assembly 3 and the developing cartridge 100.

[0156] (Example 8)

[0157] like Figure 23 and Figure 24 As shown, the following will introduce Embodiment 8 of this application. The parts that are the same as those in the above embodiments will not be repeated in this embodiment.

[0158] like Figure 24As shown, the developing cartridge 100 is provided with a support portion 17 for supporting the electrical contact portion 52. When the developing cartridge 100 is in the mounting posture where the actuating mechanism 4 and the support portion 17 are located at the lower part of the developing cartridge 100, when the developing cartridge 100 is viewed from the driving end F side along the longitudinal direction, the first actuating member 41 does not protrude from the first end cap 11 / bracket 13, and the first actuating member 41 is covered by the first end cap 11 / bracket 13; similarly, when the developing cartridge 100 is in the mounting posture, when the developing cartridge 100 is viewed from the conductive end E side along the longitudinal direction, the second actuating member 42 does not protrude from the second end cap 12, and the second actuating member 42 is covered by the second end cap 12.

[0159] like Figure 23 As shown, along the longitudinal direction, the developing cartridge 100 also has a first protective cover 111. The first protective cover 111 can be disposed on any one of the housing 1, the first end cap 11, and the bracket 13. When the developing cartridge 100 is in the installed position, when the developing cartridge 100 is viewed in a direction perpendicular to the longitudinal direction, the first actuating member 41 does not protrude from the first end cap 11. Similarly, along the longitudinal direction, the developing cartridge 100 also has a second protective cover located at the other end of the developing cartridge 100. The second protective cover can be disposed on any one of the housing 1 and the second end cap 12. When the developing cartridge 100 is in the installed position, when the developing cartridge 100 is viewed in a direction perpendicular to the longitudinal direction, the second actuating member 42 does not protrude from the second end cap 12.

[0160] like Figure 23 and Figure 24As shown, the developing cartridge 100 also includes a first reset member 43 disposed between the housing 1 / first end cap 11 / bracket 13 and the first actuating member 41. When the developing cartridge 100 is in the mounting posture, when the first driving force receiving part 31, the first actuating member 41 and the first reset member 43 are projected onto the same horizontal plane, at least a portion of the first reset member 43 is further away from the first driving force receiving part 31 than the first actuating member 41, or the first actuating member 41 is located between at least a portion of the first reset member 43 and the first driving force receiving part 31. Under this setting, when the developing cartridge 100 is working, the first reset member 43 can balance a portion of the driving force, making the positioning of the developing cartridge 100 more stable. The first reset member 43 deforms with the movement of the first actuating member 41, so that when the pushing mechanism 90 applies a force to the first actuating member 41, the first actuating member 41 directly transmits the force to the housing 1 / first end cap 11 / bracket 13, making the force transmission more efficient. The developing cartridge 100 further includes a second reset member 44 disposed between the housing 1 / second end cap 12 and the second actuating member 42. When the developing cartridge 100 is in the installation posture, when the first driving force receiving part 31, the second actuating member 42 and the second reset member 44 are projected onto the same horizontal plane, at least a portion of the second reset member 44 is further away from the first driving force receiving part 31 than the second actuating member 42, or the second actuating member 42 is located between at least a portion of the second reset member 44 and the first driving force receiving part 31, so that the second reset member 44 can further stabilize the positioning of the developing cartridge 100. The second reset member 43 deforms with the movement of the second actuating member 42, so that when the pushing mechanism 90 applies a force to the second actuating member 42, the second actuating member 42 directly transmits the force to the housing 1 / second end cap 12, further making the force transmission more efficient. The first reset member 43 / second reset member 44 is preferably a tension spring, a compression spring or a sponge, etc.

[0161] In the developing cartridge 100 of this embodiment, the actuating mechanism 4 can be more effectively protected. During transportation or installation, the actuating mechanism 4 can be prevented from colliding with other components and causing damage.

[0162] (Example 9)

[0163] like Figure 25 As shown, the following will introduce Embodiment Nine of this application. The parts that are the same as those in the above embodiments will not be described again in this embodiment. The difference from Embodiment Eight is that the structures of the first reset member 43 and the second reset member 44 are different. Figure 25 A schematic diagram showing the drive end hidden behind the first end cap 11.

[0164] like Figure 25As shown, at least one of the first reset member 43 and the second reset member 44 is configured as a stretchable elastic rope, preferably a rubber rope or the like.

[0165] In some embodiments, the first reset member 43 / second reset member 44 may be configured as a torsion spring.

[0166] In some embodiments, the first reset member 43 may be configured as a leaf spring integral with / attached to the first actuating member 41, and the second reset member 44 may be configured as a leaf spring integral with / attached to the second actuating member 42.

[0167] (Example 10)

[0168] like Figure 26 As shown, the tenth embodiment of this application will be introduced next. The parts that are the same as those in the above embodiments will not be described again in this embodiment.

[0169] like Figure 26 As shown, the housing 1 has a cartridge-side working surface 1a facing away from the toner receiving portion 10. During the installation of the developing cartridge 100, the cartridge-side working surface 1a is guided by the imaging device. The developing cartridge 100 also has an accessory 15 disposed on the cartridge-side working surface 1a, and the accessory 15 is formed as part of the housing 1. When viewing the developing cartridge 100 in the longitudinal direction, the working mechanism 4 does not protrude from the accessory 15. This design can avoid the height difference between the end cap / bracket 12 and the housing 1, which could cause the working mechanism 4 to be damaged by collision during transportation, thereby further protecting the working mechanism 4 more effectively. The accessory 15 is set as an elastic element, so that when the developing cartridge 100 is installed on / removed from the imaging device, the accessory 15 can be acted on by the main body of the device, thereby allowing the developing cartridge 100 to be installed / removed smoothly. The natural thickness (natural state without compression) of the accessory 15 is 0.5cm-1.2cm.

[0170] In some embodiments, the accessory 15 is configured as a rubber part or sponge, in which case the accessory 15 covers the box-side working surface 1a of the housing 1.

[0171] In some embodiments, the accessory 15 may also be a retractable component disposed on the working surface 1a of the box side, such as a spring or leaf spring, in which case the accessory 15 is used to support the housing 1.

[0172] In some embodiments, the accessory 15 and the housing 1 can be integrally formed, and the material of the accessory 15 can be the same as or different from that of the housing 1.

[0173] (Example 11)

[0174] like Figure 27A , Figure 27Band Figure 28 As shown, the following will introduce Embodiment Eleven of this application. The similarities with the above embodiments will not be repeated in this embodiment.

[0175] like Figure 27A , Figure 27B and Figure 28 As shown, the developing cartridge 100 also includes a connecting member 16 extending in the longitudinal direction. In the longitudinal direction, the connecting member 16 spans both ends of the housing 1, and the axis of the connecting member 16 is parallel to the rotation axis of the developing roller 21. In the longitudinal direction, the connecting member 16 may or may not penetrate the housing 1. The first actuating member 41 and the second actuating member 42 are respectively fixed at the two ends of the longitudinal direction of the connecting member 16. After the first actuating member 41 / the second actuating member 42 receives the force applied by the pushing mechanism 90, the first actuating member 41 / the second actuating member 42 directly transmits the force to the housing 1 / end cap / support 13 to force the developing roller 21 and the photosensitive drum 200 to contact and / or separate from each other. In this embodiment, the first actuating member 41 and the second actuating member 42 are integrally formed with the connecting member 16. The sum of the longitudinal extension distances of the integrally formed first actuating member 41, the second actuating member 42 and the connecting member 16 is greater than the longitudinal extension distance of the developing roller 21, which further simplifies the structure of the developing cartridge 100 and reduces maintenance costs.

[0176] In some embodiments, after the first action member 41 / second action member 42 receives the force applied by the pushing mechanism 90, the force can also be transmitted to the housing 1 / end cap / support 13 through the connector 16, so as to force the developing roller 21 and the photosensitive drum 200 to contact and / or separate from each other.

[0177] like Figure 27A and Figure 27B As shown, along the longitudinal direction, when the connector 16 penetrates the housing 1, at least a portion of the connector 16 is located within the toner receiving portion 10. A sealing element is provided at the connection 10a between the connector 16 and the housing 1 to prevent the toner from leaking from the connection 10a and to maintain the airtightness of the housing 1.

[0178] When the connector 16 does not penetrate the housing 1, the connector 16 is entirely exposed outside the housing 1. Alternatively, the housing 1 is provided with a groove that is recessed from the surface of the housing 1 into the toner receiving portion 10, and the connector 16 is received by the groove. Under this setting, the developing cartridge 100 can also be provided with a cover for covering the groove to improve the aesthetics of the developing cartridge 100.

[0179] like Figure 27A and Figure 27B As shown, the developing cartridge 100 also includes the first reset member 43 and the second reset member 44 mentioned above.

[0180] In some embodiments, the actuating mechanism 4 has one of a first actuating member 41 and a second actuating member 42, and one of the first actuating member 41 and the second actuating member 42 is integrally formed with the connecting member 16.

[0181] In this embodiment, by providing a connector 16 for connecting with the action mechanism 4, only one push mechanism 90 can be provided in the imaging device. When one of the first action member 41 and the second action member 42 receives the force applied by the push mechanism 90, it can be transmitted to the other of the first action member 41 and the second action member 42 through the connector 16, thereby simplifying the internal structure of the imaging device.

Claims

1. A developing cartridge, detachably mounted to an imaging device, the developing cartridge having a housing for containing toner and a developing roller rotatably disposed within the housing, the developing roller for supplying toner to a photosensitive drum outside the developing cartridge, the developing roller having a rotation axis extending in a longitudinal direction; The developing cartridge also includes a mechanism for forcing the developing roller to contact and separate from the photosensitive drum, the mechanism comprising a first actuating element located at one end of the housing along the longitudinal direction; characterized in that, The first actuating element includes: The first part is used to receive the contact force applied by the imaging device, the contact force being used to force the developing roller and the photosensitive drum into contact with each other; The second part is used to receive the separation force applied by the imaging device, which forces the developing roller to separate from the photosensitive drum. A first elastic element, at least for transmitting the contact force, is disposed between the first portion and the second portion; The first part is movable relative to the second part, and both the first part and the second part are made of rigid materials.

2. The developing cartridge according to claim 1, characterized in that, The first part and the second part are formed separately.

3. The developing cartridge according to claim 1, characterized in that, When either the first part or the second part is subjected to force, the first part and the second part can move together.

4. The developing cartridge according to claim 1, characterized in that, The developing cartridge also includes A driving component is used to receive the rotational driving force output by the imaging device to directly or indirectly drive the developing roller to rotate. A clutch is used to control the transition of internal components of a drive assembly between a disengaged and engaged state. The clutch is configured to move smoothly in a direction intersecting the longitudinal direction. The clutch switches between a first state and a second state through smooth movement, thereby switching the internal components of the drive assembly between a disengaged state and an engaged state.

5. The developing cartridge according to claim 4, characterized in that, When the clutch is in the second state, the internal components of the drive assembly are engaged, and the developing roller and the photosensitive drum are close to each other; when the clutch is in the first state, the internal components of the drive assembly are disengaged, and the developing roller and the photosensitive drum are separated from each other.

6. The developing cartridge according to claim 4, characterized in that, In the second state, the clutch is engaged, and the internal components of the drive assembly are in a engaged state, enabling the drive assembly to transmit driving force to the developing roller. In the first state, the clutch is in a disengaged state, and the internal components of the drive assembly are separated, so the drive assembly cannot transmit driving force to the developing roller.

7. The developing cartridge according to claim 4, characterized in that, The clutch further includes a clutch body and a third engagement portion formed on the clutch body; the developing cartridge further includes a third engaged portion for engaging with the third engagement portion; the third engagement portion and the third engaged portion slide in engagement in a direction intersecting the longitudinal direction.

8. The developing cartridge according to claim 7, characterized in that, The clutch moves as the first actuating member rotates, thereby causing the clutch to move smoothly along the third engaged portion.

9. The developing cartridge according to claim 1, characterized in that, The developing cartridge also has an end cap located at the longitudinal end of the housing and a chip for storing information related to the developing cartridge; When the developing chamber is viewed longitudinally, and the active mechanism and the chip are positioned at the bottom of the developing chamber, the active mechanism is not exposed outside the developing chamber and is covered by the end cap.

10. The developing cartridge according to any one of claims 1-9, characterized in that, The actuating mechanism also includes a second actuating element located at the other end of the housing; The developing cartridge also includes a connector extending in the longitudinal direction; The sum of the longitudinal extension distances of the connector, the first actuating member, and the second actuating member is greater than the longitudinal extension distance of the developing roller.

Images