Developing cartridge

Abstract

The developing box is detachably installed into the device provided with the stylus, the device is provided with the door cover, and the protrusion is arranged on the door cover; the developing box comprises a shell and a chip assembly formed separately from the shell and fixedly connected with the shell, the shell is used for accommodating the carbon powder, the protrusion pushes the developing box when the door cover is closed, the developing box is rotated around the shaft, and the chip assembly is used for establishing the communication connection with the device; the chip assembly comprises a support body, an electric contact part and a connecting part connected with the support body, the support body is used for being fixedly connected with the shell, the electric contact part and the connecting part are both located above the support body, the electric contact part is used for forming the electric connection with the stylus of the device and is used for supporting at least a part of the electric contact part, and the number of the electric contact parts opposite to the connecting part is greater than the number of the electric contact parts not opposite to the connecting part, the developing box provided by the utility model improves the reliability of the stable electric connection between the electric contact part and the stylus under the condition that the chip support and the shell are fixedly connected.

Description

Technical Field

[0001] This utility model relates to the field of electrophotographic imaging, and more particularly to a developing cartridge that can be detachably installed in an imaging device. Background Technology

[0002] In the field of electrophotographic imaging technology, the developing cartridge is a core component that contains toner and works with devices (such as printers) to achieve imaging functions. The developing cartridge includes a chip that stores information. The chip is equipped with electrical contacts for forming an electrical connection with the device's pins. The chip establishes a stable electrical connection with the device's pins through the electrical contacts to achieve the exchange of information such as the developing cartridge model and lifespan.

[0003] In the prior art, the developing cartridge typically includes a housing for storing toner and a chip holder for supporting the chip. The chip holder is fixedly installed on the housing or integrally formed with the housing. The original intention of this fixed structure is to prevent the chip holder from shaking relative to the housing, thereby preventing the connection between the chip and the device contact pins from being interrupted and improving the stability of the electrical connection.

[0004] However, the above-mentioned fixing structure presents a technical contradiction in actual installation: to ensure that the developing cartridge can be smoothly installed into the imaging equipment, the height of the chip holder needs to be strictly controlled. However, the imaging equipment usually has guide rails for guiding the installation of the developing cartridge. These guide rails are often non-linear. If the chip holder is too high, it is very easy to interfere with the guide rails, causing the developing cartridge to fail to be installed properly. If the height of the retainer is reduced to avoid interference, although it can ensure that the developing cartridge is smoothly installed, it will cause a distance between the electrical contact surface of the chip and the contact pin of the imaging equipment, making it impossible for the two to make effective contact. Utility Model Content

[0005] This utility model provides a developing cartridge that improves the reliability of stable electrical connection between the electrical contacts and the pins when the chip holder is fixedly connected to the housing. The specific solution is as follows:

[0006] A developing cartridge is detachably installed into a device equipped with a contact pin. The device includes a main body and a cover connected to the main body. The cover has a protrusion and is movably disposed relative to the main body. The contact pin is located on the main body, and the developing cartridge is housed within the main body. The developing cartridge includes a housing, a chip assembly, and a developing roller for supplying toner. The developing roller rotates about a rotation axis N. The chip assembly is separately formed and fixedly connected to the housing. The housing is used to hold toner. When the cover is closed, the protrusion pushes the developing cartridge, causing it to rotate about the rotation axis N. The chip assembly is used to establish a communication connection with the device. The chip assembly includes a support body, a connecting part, and an electrical contact part. The support body is fixedly connected to the housing. The electrical contact part and the connecting part are both located above the support body. The electrical contact part is used to form an electrical connection with the contact pin of the device. The connecting part is connected to the support body and is used to support at least a portion of the electrical contact part.

[0007] The number of electrical contacts opposite to the connecting part is greater than the number of electrical contacts not opposite to the connecting part.

[0008] In some embodiments, both longitudinal sides of the developing cartridge are provided with abutting members for receiving the push force of the door cover. The abutting members are provided with abutting surfaces that are inclined forward and downward, and the abutting surfaces are used to be pushed by the protrusion.

[0009] In some embodiments, the developing cartridge includes a first abutting member and a second abutting member, both of which are fixedly connected to the housing.

[0010] In some embodiments, the second abutting member includes a first reinforcing member, a second reinforcing member, and an abutting plate. Along the thickness direction of the abutting plate, the first reinforcing member and the second reinforcing member are located on both sides of the abutting plate, and both the first reinforcing member and the second reinforcing member are used to strengthen the strength of the abutting plate.

[0011] In some embodiments, the second abutting member has a second abutting surface located on the abutting plate, and along the thickness direction, the first reinforcing member is located on the first side of the abutting plate, and the second reinforcing member is located on the second side of the abutting plate.

[0012] In some embodiments, the size of the first reinforcing member gradually increases along the left-right direction and toward the direction of the abutting plate toward the housing.

[0013] In some embodiments, the first reinforcing member includes an upper reinforcing member, a middle reinforcing member, and a lower reinforcing member. In the vertical direction, the upper reinforcing member is located at the upper end of the plate being abutted, the middle reinforcing member is located at the middle of the plate being abutted, and the lower reinforcing member is located at the lower end of the plate being abutted.

[0014] In some embodiments, the upper reinforcement, the middle reinforcement, and the lower reinforcement all extend from the first side in a direction away from the abutting plate, and the heights of the upper reinforcement, the middle reinforcement, and the lower reinforcement decrease sequentially.

[0015] In some embodiments, the housing is provided with a clearance portion for avoiding protrusions.

[0016] In some embodiments, the chip assembly includes a first fixing member and a second fixing member disposed on the support body. The first fixing member and the second fixing member are used to fix or detachably mount the chip assembly on the housing, and an electrical contact portion is located between the first fixing member and the second fixing member. Attached Figure Description

[0017] Figure 1 This is a perspective view of the developing cartridge involved in this utility model.

[0018] Figure 2 This is an exploded view of the developing cartridge of this utility model after part of the housing is hidden, and the chip assembly, end cap and housing body are separated.

[0019] Figure 3 This is a perspective view of the end cap and chip assembly that are combined together according to this utility model.

[0020] Figure 4 This is a perspective view of the chip assembly involved in this utility model.

[0021] Figure 5 This utility model relates to a developing cartridge edge Figure 4 A sectional view of section AA.

[0022] Figure 6 This is a perspective view of the developing cartridge involved in this utility model.

[0023] Figure 7 This is a perspective view of the second abutted member involved in this utility model.

[0024] Figure 8 This is a plan view of the second abutted member involved in this utility model.

[0025] Figure 9 This is a perspective view of the door cover of the equipment involved in this utility model.

[0026] Figure 10 This is a schematic diagram of the right-side position of the developing cartridge when the door cover is not fully closed during installation of the device. Detailed Implementation

[0027] Figure 1 This is a perspective view of the developing cartridge involved in this utility model; Figure 2This is an exploded view of the developing cartridge of this utility model after a portion of the housing is hidden, and the chip assembly, end cap and housing body are separated. Figure 3 This is a perspective view of the end cap and chip assembly combined together according to this utility model; Figure 4 This is a perspective view of the chip assembly involved in this utility model; Figure 5 This utility model relates to a developing cartridge edge Figure 4 A sectional view taken at section AA. Figure 6 This is a perspective view of the developing cartridge involved in this utility model; Figure 7 This is a perspective view of the second abutted component involved in this utility model; Figure 8 This is a plan view of the second abutting member involved in this utility model; Figure 9 This is a perspective view of the door cover of the equipment involved in this utility model; Figure 10 This is a schematic diagram of the right-side position of the developing cartridge when the door cover is not fully closed during installation of the device.

[0028] The developing cartridge 1 can be detachably installed into a device (not shown) equipped with contact pins. The developing cartridge 1 can be first installed into a drum frame (not shown) equipped with a photosensitive drum, and then the combination of the developing cartridge 1 and the drum frame can be installed into the device together, so that the electrical contact 61a of the chip 61 contacts the contact pins of the device. Alternatively, the drum frame can be installed into the device first, and then the developing cartridge 1 can be detachably installed into the device. Alternatively, the photosensitive drum can be integrated into the device, and the developing cartridge 1 can be directly detachably installed into the device.

[0029] The device includes a stylus, a device body, a first protrusion, a second protrusion 102, a third protrusion 103, and a door cover 100. The developing cartridge 1 is housed within the device body. The door cover 100 is connected to the device body and is movable relative to the device body. The stylus is located on the device body, and the first protrusion is disposed adjacent to the stylus. Figure 9 As shown, the second protrusion 102 and the third protrusion 103 are located on the left and right sides of the door cover 100, respectively.

[0030] like Figure 1As shown, the developing cartridge 1 includes a housing 2, a rotating component 3, and a handle 4. The user can install and remove the developing cartridge 1 by gripping the handle 4. The housing 2 includes a housing body 21 and an end cap 22 that are fixedly connected. The end cap 22 is installed at the longitudinal end of the housing body 21. The housing body 21 is used to contain toner. The handle 4 is connected to the housing body 21. The rotating component 3 extends along the longitudinal direction of the developing cartridge and is supported by the housing body 21 in a rotatable manner. The developing cartridge 1 / rotating component 3 includes, but is not limited to, a developing roller 31 for carrying and supplying toner to the outside, a toner feeding roller 32 that contacts the developing roller 31 and is used to feed toner to the developing roller 31, and a stirring component 33 for stirring the toner and feeding toner toward the toner feeding roller 32.

[0031] For ease of description, the direction in which the developing roller 31 extends is defined as the longitudinal direction / left-right direction. The end cap 22 is located at the left end of the housing body 21. The rotation axes of the rotating components 3 are all parallel to the left-right direction, as shown below. Figure 2 As shown, the rotation axis N of the developing roller 31 is parallel to the left and right direction. The developing cartridge 1 also has a transverse / front and back direction that intersects the longitudinal direction, and a vertical direction that intersects both the longitudinal and front and back directions. Along the front and back direction, the developing roller 31 and the handle 4 are located on both sides of the housing 2, and the developing roller 31 is located in front of the handle 4. Preferably, the left and right direction, the front and back direction, and the vertical direction are orthogonal.

[0032] The developing cartridge 1 also includes a drive mechanism 5, which receives driving force from the device to drive the rotating component 3. The drive mechanism 5 and the end cover 22 are located at the same end. The end cover 22 can cover at least a portion of the drive mechanism 5, and a portion of the drive mechanism 5 is exposed through the end cover 22. The drive mechanism 5 includes a developing roller gear 51, a powder feeding roller gear 52, a stirring component gear 53, a drive gear 54, and a drive force receiving part 55. The developing roller gear 51 is located at the longitudinal end of the developing roller 31 and is used to drive the developing roller 31 to rotate. The powder feeding roller gear 52 is located at the longitudinal end of the powder feeding roller 32 and is used to drive the powder feeding roller 32 to rotate. The stirring component gear 53 is located at the longitudinal end of the stirring component 33 and is used to drive the stirring component 33 to rotate. The drive force receiving part 55 is used to receive driving force from the device, and the drive force receiving part 55 is exposed through the end cover 22. The drive gear 54 is used to receive and transmit driving force from the drive force receiving part 55. The drive gear 54 and the drive force receiving part 55 are coaxially arranged. Preferably, the drive gear 54 and the drive force receiving part 55 are integrally formed.

[0033] Furthermore, the developing cartridge 1 also includes positioning portions 201 located at both longitudinal ends of the housing body 21. The positioning portions 201 are used to cooperate with the drum frame / equipment so that the developing cartridge 1 can be stably installed. The positioning portions 201 are coaxially arranged with the developing roller 31. When the developing cartridge 1 is subjected to a force, the developing cartridge 1 can rotate around the positioning portions 201.

[0034] The developing cartridge 1 is also provided with a chip assembly 6 that is separately formed and fixedly connected to the housing 2. The chip assembly 6 is used to store the parameter information of the developing cartridge so that the device can read it. The parameter information includes the model of the developing cartridge, its service life, etc. The chip assembly 6 is located on the outer surface of the end cover 22 facing the developing cartridge 1. Figure 2 As shown, when viewed from left to right, the chip assembly 6 and the end cap 22 are arranged from left to right. The chip assembly 6 includes a chip 61, a chip support 62, a first fixing member 63, and a second fixing member 64. The chip support 62 is used to support the chip 61. The first fixing member 63 and the second fixing member 64 are both located on the chip support 62. The first fixing member 63 and the second fixing member 64 are used to fix the chip support 62 / chip assembly 6 to the end cap 22 / housing 2 in a detachable manner. Specifically, the end cap 22 is provided with a fixing member 22a that is opposite to the first fixing member 63. The chip support 62 is initially positioned by engaging the fixing member 22a with the shaft hole of the first fixing member 63, and then fixed to the end cap 22 by the second fixing member 64 using screws, snaps, magnetic connections, etc., thereby realizing the fixed installation of the chip support 62 and the end cap 22.

[0035] The chip assembly 6 / chip 61 includes an electrical contact 61a and a storage unit (not shown) for storing information. The electrical contact 61a is used to form an electrical connection with the device's pins, thereby establishing a communication connection with the device. In the front-to-back direction, the electrical contact 61a is located between the first fixing member 63 and the second fixing member 64, which allows the electrical contact 61a to be supported more stably. When the developing cartridge 1 is placed in the predetermined position of the device, the electrical contact 61a is located below the device's pins. The storage unit does not need to be limited in its installation position, as long as it can exchange information with the electrical contact 61a.

[0036] like Figure 3 and Figure 4As shown, the chip holder 62 includes a holder body 620, a guide groove 62a, and a side plate 62b forming the guide groove 62a. The holder body 620 is used for fixed connection with the housing 2. The guide groove 62a and the side plate 62b are both located above the holder body 620. When viewed from the left and right direction, the side plate 62b extends from the right and left direction and is close to the end cover 22. A movable gap 62c is formed between the side plate 62b and the end cover 22. The guide groove 62a is used to cooperate with the first protrusion of the device to achieve a stable connection between the developing cartridge 1 and the device. During the installation and removal of the developing cartridge 1... During the unloading process, when the chip holder 62 abuts against the inner wall of the equipment, at least a portion of the chip assembly 6 can undergo elastic deformation through the movable gap 62c. The movable gap 62c allows the chip holder 62 to move, thereby avoiding difficulties in installation or disassembly caused by friction between the chip holder 62 and the inner wall of the equipment, or even damage to the chip holder 62. In addition, the first fixing member 63 and the second fixing member 64 are respectively located at the lateral ends of the bracket body 620. Specifically, the first fixing member 63 is located at the front end of the bracket body 620, and the second fixing member 64 is located at the rear end of the bracket body 620.

[0037] Furthermore, the chip assembly 6 / chip holder 62 is also provided with a connecting portion 621 connected to the holder body 620, and at least a portion of the connecting portion 621 is located below the electrical contact portion 61a and the guide groove 62a. The connecting portion 621 is used to support the electrical contact portion 61a. In the predetermined state where the chip 61 is installed on the chip holder 62, all electrical contacts 61a are supported by the connecting portion 621, thereby making the contact between the electrical contact portion 61a and the contact pin more stable. However, in the actual production process, the connecting portion 621 can only support a portion of the electrical contacts 61a. Observing along the front-back direction, most preferably, the number of electrical contacts 61a opposite to the connecting portion 621 is greater than the number of electrical contacts 61a not opposite to the connecting portion 621. The number of electrical contacts 61a is not limited. In this embodiment, there are 3 electrical contacts 61a. Figure 5 As shown, when viewed from the left and right direction, the number of electrical contacts 61a not directly supported by the connecting part 621 is less than the number of electrical contacts 61a directly supported by the connecting part 621. Specifically, a reference line L is provided extending vertically from the left end of the connecting part 621. To the left of the reference line L, there is one electrical contact 61a not directly supported by the connecting part 621. Conversely, to the right of the reference line L, there are two electrical contacts 61a directly supported by the connecting part 621.

[0038] After the developing cartridge 1 is installed in the predetermined position of the device, the device door 100 rotates from bottom to top to prepare for printing. During the closing process, the protrusion of the door 100 pushes at least a portion of the developing cartridge 1, achieving a stable connection between the electrical contact 61a of the chip assembly 6 and the device's contact pins. Viewed along the front-to-back direction, as... Figure 6As shown, the left and right / longitudinal sides of the developing cartridge 1 are provided with abutting members to receive the pushing force of the protrusion on the door cover 100, thereby driving the developing cartridge to move upward around the rotation axis N. The electrical contact part 61a contacts the contact pin to form a stable connection. Specifically, the left side of the developing cartridge 1 is provided with a first abutting member 7 corresponding to the second protrusion 102, and the right side of the developing cartridge 1 is provided with a second abutting member 8 corresponding to the third protrusion 103. The first abutting member 7 and the second abutting member 8 are respectively located on both sides of the handle 4.

[0039] The first abutting member 7 and the second abutting member 8 are used to be abutted and pushed by the protrusion, driving the developing cartridge to move. In this embodiment, the first abutting member 7 is fixedly connected to the end cap 22. When viewed in the front-back direction, the first abutting part 7 is disposed above the rear side wall of the end cap. The first abutting part 7 has a first abutting surface 7a that is inclined forward and downward to receive the pushing force from the second protrusion 102. When the second protrusion 102 abuts against the first abutting surface 7a, when viewed in the front-back direction, at least a portion of the first abutting part 7 coincides with the second protrusion 102. The second abutting member 8 is fixedly connected to the housing 2 / housing body 21. Similarly, the second abutting member 8 has a second abutting surface 8a inclined downwards and forwards to receive the pushing force from the third protrusion 103. The second abutting member 8 includes a first reinforcing member 81, a second reinforcing member 82, and an abutting plate 83. The two sides of the abutting plate 83 in the thickness direction are defined as the first side e and the second side f, respectively. The left-right direction is perpendicular to the thickness direction of the abutting plate 83. The two sides of the abutting plate 83 in the left-right direction are defined as the third side g (the side of the abutting plate 83 closest to the housing) and the fourth side h (the side of the abutting plate 83 furthest from the housing). The abutting plate 83 also has a fifth side k (the side of the abutting plate 83 furthest from the housing). The fifth side k and the sixth side m (the side where the lower end of the plate 83 is located) are perpendicular to both the left and right directions and the thickness direction. Along the thickness direction, the first reinforcing member 81 and the second reinforcing member 82 are located on both sides of the second abutting surface 8a. Specifically, the first reinforcing member 81 is located on the first side e of the plate 83, and the second reinforcing member 82 is located on the second side f of the plate 83. The second abutting surface 8a is also located on the second side f of the plate 83. Both the first reinforcing member 81 and the second reinforcing member 82 are used to strengthen the strength of the plate 83.

[0040] When the developing cartridge 1 is placed in the predetermined position of the device, during the closing process of the door cover 100, the third protrusion 103 first abuts against the top of the abutted plate 83. At this time, the impact force received above the abutted plate 83 is the greatest. Preferably, along the extension direction, the first reinforcing member 81 is located at the upper end k of the second abutted surface 8a / abutted plate 83, and conversely, the second reinforcing member 82 is located at the lower end m of the second abutted surface 8a / abutted plate 83. This design can prevent the larger impact force from damaging the abutted plate 83.

[0041] The housing body 21 is also provided with a clearance part 9, which is used to avoid the third protrusion 103. The third protrusion 103 passes through the clearance part 9 from top to bottom and then abuts against the second abutting member 8, so that the door cover 100 can be closed smoothly, thereby allowing the electrical contact part 61a to form a stable connection with the contact pin.

[0042] At least one first reinforcing member 81 is provided. In this embodiment, there are three first reinforcing members 81, namely an upper reinforcing member 81a, a middle reinforcing member 81b, and a lower reinforcing member 81c. The upper reinforcing member 81a, the middle reinforcing member 81b, and the lower reinforcing member 81c are all used to strengthen the strength of the abutting plate 83.

[0043] The user installs the developer cartridge 1 and drum unit together into the equipment from back to front. After the developer cartridge 1 reaches the predetermined position, the positioning part 201 engages with the positioning part of the equipment / drum unit, and the developer cartridge 1 is stably connected to the equipment. The door cover 100 begins to rotate upwards to close. The third protrusion 103 of the door cover 100 passes through the clearance part 9 from top to bottom. Then, the second protrusion 102 of the door cover 100 contacts the first abutting member 7. At the same time, the third protrusion 103 of the door cover 100 contacts the second abutting member 8. As the door... As the cover 100 moves further, both the first abutting member 7 and the second abutting member 8 receive an upward thrust from the cover 100. Under the action of this thrust, the positioning part 201 drives the developing cartridge 1 to rotate upward around the rotation axis N of the developing roller 31. The electrical contact part 61a moves upward along with the developing cartridge 1 around the rotation axis N until the electrical contact part 61a contacts the contact pin of the device. After the cover 100 is closed, the electrical contact part 61a maintains stable contact with the contact pin of the device, realizing the communication connection between the developing cartridge 1 and the device.

[0044] [Other Notes]

[0045] In some embodiments, the positions of the first abutting member 7 and the second abutting member 8 are not limited, as long as they can be pushed by at least a part of the device to drive the developing cartridge 1 to move upward around the rotation axis N of the developing roller 31, and the electrical contact 61a can make stable contact with the contact pin of the device.

[0046] [Beneficial Effects]

[0047] 1. The chip assembly 6 and the housing 2 adopt a split structure design. This design not only makes it easy to replace the chip assembly 6 with a suitable one according to the product model, but also makes it easy to upgrade the chip 61. Moreover, when either the chip assembly 6 or the end cover 22 is damaged, only the damaged part needs to be replaced, which can effectively reduce costs.

[0048] 2. The number of electrical contacts 61a not supported by the connecting part 621 is less than the number of electrical contacts 61a supported by the connecting part 621. This ensures that the chip holder 62 can undergo slight deformation, allowing the developing cartridge to be installed and removed smoothly, and also makes the contact between the electrical contacts 61a and the stylus more stable.

[0049] 3. Along the vertical direction, the fifth side k is located above the sixth side m. That is, the upper end k of the abutted plate 83 is located above the lower end m, and the upper reinforcing member 81a is located at the upper end k. Conversely, the lower reinforcing member 81a is located at the lower end m, and the middle reinforcing member 81b is located between the upper reinforcing member 81a and the lower reinforcing member 81c. Preferably, the middle reinforcing member 81b is located in the middle of the abutted plate 83. The upper reinforcing member 81a, the middle reinforcing member 81b, and the lower reinforcing member 81c all extend in the left-right direction. Therefore, this structure can strengthen the strength of the abutted plate 83.

[0050] 4. Both the first reinforcing member 81 and the second reinforcing member 82 are used to strengthen the strength of the abutting plate 83. When the door cover 100 is closed, the third protrusion 103 on the door cover 100 will first abut against the position of the upper end k of the abutting plate 83. Along the extension direction, the impact force on the first reinforcing member 81 is smaller the closer it is to the bottom. Compared with the upper reinforcing member 81a not being set at the upper end k of the abutting plate 83, the upper reinforcing member 81a set at the upper end k of the abutting plate 83 can make the abutting plate 83 stronger and less prone to deformation.

[0051] 5. At least one second reinforcing member 82 is also provided. When the developing cartridge 1 is placed in the predetermined position of the device, during the closing process of the door cover 100, the third protrusion 103 first abuts against the upper part of the abutted plate 83. At this time, the upper end k of the abutted plate 83 has a tendency to move forward. The second reinforcing member 82 is provided at the lower end m of the second side f, which has a tendency to inhibit the forward movement of the abutted plate 83. Therefore, this structure can also strengthen the strength of the abutted plate 83.

[0052] 6. In this embodiment, there are two second reinforcing members 82, one located at the lower end m and the other located in the middle of the second side f. Compared with the case where there is one first reinforcing member 81 and one second reinforcing member 82, the presence of multiple first reinforcing members 81 and multiple second reinforcing members 82 located on both sides in the thickness direction of the abutting plate 83 can better strengthen the strength of the abutting plate 83.

[0053] 7. In the left-right direction, compared to the side h of the abutting plate 83 furthest from the housing 2, the third protrusion 103 abuts against the second abutting member 8 closer to the side g of the abutting plate 83 closest to the housing 2. In other words, compared to the fourth side h of the abutting plate 83, the third protrusion 103 abuts against the second abutting member 8 closer to the third side g. Therefore, the closer the first reinforcing member 81 is to the housing 2, the greater the force exerted on the first reinforcing member 81. Figure 7 As shown, along the left-right direction and towards the direction of the abutting plate closer to the shell, the size of the first reinforcing member 81 gradually increases. Therefore, the strength of the second abutting member 8 can be further strengthened, which can effectively improve the impact resistance of the second abutting member 8, make it easier to withstand the impact force brought by the third protrusion 103, and improve the stability of the structure.

[0054] 8. For example Figure 8 As shown, the upper reinforcing member 81a, the middle reinforcing member 81b, and the lower reinforcing member 81c all extend from the first side e in a direction away from the abutting plate 83. The heights of the upper reinforcing member 81a, the middle reinforcing member 81b, and the lower reinforcing member 81c decrease sequentially. Therefore, while ensuring structural performance, the structure of the second abutting member 8 can be simplified, thereby reducing the amount of material used.

Claims

1. A developing cartridge, detachably installed in a device equipped with a stylus, the device comprising a device body and a door cover connected to the device body, the door cover having a protrusion, the door cover being movably disposed relative to the device body, the stylus being located on the device body, and the developing cartridge being housed by the device body; The developing cartridge includes a housing, a chip assembly, and a developing roller for supplying toner. The developing roller rotates about a rotation axis N. The chip assembly is separately formed and fixedly connected to the housing. The housing is used to contain toner. When the door is closed, a protrusion pushes the developing cartridge, causing the developing cartridge to rotate about the rotation axis N. The chip assembly is used to establish a communication connection with the device. Its features are, The chip assembly includes a support body, a connecting part, and an electrical contact part. The support body is used to be fixedly connected to the housing. The electrical contact part and the connecting part are both located above the support body. The electrical contact part is used to form an electrical connection with the contact pins of the device. The connecting part is connected to the support body and is used to support at least a portion of the electrical contact part. The number of electrical contacts opposite to the connecting part is greater than the number of electrical contacts not opposite to the connecting part.

2. The developing cartridge according to claim 1, characterized in that, Both sides of the developing chamber are provided with abutting members for receiving the pushing force of the door cover. The abutting members have abutting surfaces that are inclined downwards and forwards and are used to be pushed by the protrusions.

3. The developing cartridge according to claim 2, characterized in that, The developing cartridge includes a first abutting member and a second abutting member, both of which are fixedly connected to the housing.

4. The developing cartridge according to claim 3, characterized in that, The second abutting member includes a first reinforcing member, a second reinforcing member, and an abutting plate. Along the thickness direction of the abutting plate, the first reinforcing member and the second reinforcing member are located on both sides of the abutting plate. Both the first reinforcing member and the second reinforcing member are used to strengthen the strength of the abutting plate.

5. The developing cartridge according to claim 4, characterized in that, The second abutting member has a second abutting surface located on the abutting plate. Along the thickness direction, the first reinforcing member is located on the first side of the abutting plate, and the second reinforcing member is located on the second side of the abutting plate.

6. The developing cartridge according to claim 5, characterized in that, Along the left-right direction, and towards the direction where the abutting plate is closer to the shell, the size of the first reinforcing member gradually increases.

7. The developing cartridge according to claim 4, characterized in that, The first reinforcing member includes an upper reinforcing member, a middle reinforcing member, and a lower reinforcing member. Along the vertical direction, the upper reinforcing member is located at the upper end of the plate being abutted, the middle reinforcing member is located in the middle of the plate being abutted, and the lower reinforcing member is located at the lower end of the plate being abutted.

8. The developing cartridge according to claim 7, characterized in that, The upper reinforcement, middle reinforcement, and lower reinforcement all extend from the first side in a direction away from the plate being abutted, and the height of the upper reinforcement, middle reinforcement, and lower reinforcement decreases sequentially.

9. The developing cartridge according to claim 1, characterized in that, The housing is provided with a clearance section for avoiding protrusions.

10. The developing cartridge according to claim 1, characterized in that, The chip assembly includes a first fixing member and a second fixing member disposed on the support body. The first fixing member and the second fixing member are used to fix or detachably mount the chip assembly on the housing. The electrical contact portion is located between the first fixing member and the second fixing member.

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