Developing box and electronic imaging device

Abstract

The utility model discloses a developing box and an electronic imaging device, a terminal contact assembly is arranged in the electronic imaging device, and the developing box comprises a box body, a box cover and a cover plate, the developing roller is rotatably supported on the box body; the driving force receiving unit is used for receiving driving force from the electronic imaging device and is arranged at one end of the box body in the length direction; the conductive unit is used for receiving voltage from the electronic imaging device and is arranged at the other end of the box body in the length direction; the storage unit is arranged on the box body and electrically connected with the terminal contact assembly, the storage unit comprises a chip, the chip comprises a plurality of terminals, and the plurality of terminals at least comprise one grounding terminal; the grounding terminal is closer to the conductive unit than the other terminals. According to the developing box disclosed by the utility model, the grounding terminal on the chip is arranged closest to the conductive unit, so that the influence on the grounding terminal when the driving force receiving unit is meshed with the driving head can be effectively reduced, the vibration condition of the grounding terminal is reduced, and the grounding of the chip is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic imaging devices, in particular to a developing box and an electronic imaging device. Background Art

[0002] The electronic imaging device forms an image on a recording material by using an electronic photographic imaging type. The electronic imaging device includes an electronic photographic copier, an electronic photographic printer (LED printer, laser beam printer, etc.), a fax machine, a multi-function machine having multiple functions of these machines, a word processor, etc. Usually, the electronic photographic imaging device has a detachable processing box, and such processing box can be divided into two types: an integrated box and a split box, wherein the split box is a box in which a developing box and a drum assembly having a photosensitive drum are separately arranged, and the developing box is detachably installed in the drum assembly. Such a developing box usually includes: a box body containing a developer, a developing roller and a chip, etc. The chip includes a chip terminal, and the developing box is connected to the terminal contact assembly on the electronic photographic imaging device through the chip terminal to realize data communication, such as recording the remaining toner amount of the developing box, whether the developing box is new, the remaining service life of the developing roller and the powder feeding roller, and other data.

[0003] There is a developing box that can be detachably installed in an electronic imaging device. Its chip includes terminals for various functions, including a grounding terminal. The terminal contact head end face of the terminal contact assembly on the electronic imaging device is in contact with and electrically connected to each terminal. The terminal contact head has the characteristics of being exposed to the outside and elastically stretchable. Therefore, the terminal contact head is easily invaded by foreign objects and may be deformed due to long-term compression and shrinkage. In addition, the terminal contact head has a wide range of movement and the end face in contact with each terminal is small, which is prone to misalignment and virtual connection. Moreover, the grounding terminal is arranged closer to the driving force receiving unit of the developing box than the other terminals. The vibration generated when the driving force receiving unit engages with the driving head of the electronic imaging device to receive the driving force will affect the grounding terminal, which may cause poor grounding of the chip. Utility Model Content

[0004] According to one aspect of the utility model, a developing box is provided, which is detachably installed in an electronic imaging device, wherein a terminal contact assembly is provided in the electronic imaging device, and the developing box comprises:

[0005] A box body, containing a developer inside;

[0006] A developing roller rotatably supported on the box body;

[0007] A driving force receiving unit, used for receiving driving force from the electronic imaging device, and arranged at one end of the box body in the length direction;

[0008] A conductive unit, used for receiving a voltage from an electronic imaging device, and arranged at the other end of the box body in the length direction;

[0009] A storage unit, arranged on the box body and electrically connected to the terminal contact assembly, wherein the storage unit comprises a chip, the chip comprises a plurality of terminals, and the plurality of terminals comprises at least one ground terminal;

[0010] The ground terminal is closer to the conductive unit than other terminals.

[0011] In some embodiments, the plurality of terminals further include a communication terminal, and the communication terminal is closer to the driving force receiving unit than the ground terminal.

[0012] In some embodiments, the storage unit is located in the middle of the box body in the length direction; or, the storage unit is arranged close to the conductive unit in the length direction.

[0013] In some embodiments, the storage unit further includes a conductive connection member, the chip is electrically connected to the conductive connection member, and the conductive connection member is in contact with and electrically connected to the terminal contact assembly.

[0014] In some embodiments, the terminal contact assembly includes a first contact pin and a second contact pin, the first contact pin and the second contact pin are electrically connected via a conductive member, and a portion of the conductive connector exposed outside the box body contacts and is electrically connected to the second contact pin.

[0015] In some embodiments, at least a portion of the conductive connection is exposed outward from the rear surface of the box body.

[0016] In some embodiments, the storage unit further includes a first conductive member, the electronic imaging device includes a photosensitive drum, and the photosensitive drum includes a photosensitive drum shell; the ground terminal is electrically connected to the photosensitive drum shell through the first conductive member.

[0017] In some embodiments, a limiter is further included, wherein the limiter is disposed on the developing roller shaft of the developing roller, the limiter has a conductive layer, the first conductive member contacts and is electrically connected to the conductive layer, and the conductive layer is also in contact and conductive with the photosensitive drum housing.

[0018] In some embodiments, the limiting member is disposed at one end of the developing roller shaft close to the conductive unit.

[0019] In some embodiments, the first conductive member includes a first connecting segment, an intermediate segment, and a second connecting segment, wherein the intermediate segment extends on the surface of the box body and connects the first connecting segment and the second connecting segment, respectively, the first connecting segment contacts the ground terminal, and the second connecting segment contacts the conductive layer.

[0020] In some embodiments, an electrical connection portion is provided on the first connection section, and the electrical connection portion is in elastic contact with the ground terminal.

[0021] In some embodiments, the conductive layer is disposed on the outer circumferential surface of the limiting member, and the second connecting section is in tangential contact with the conductive layer.

[0022] In some embodiments, the storage unit further includes a plurality of second conductive members, and the plurality of second conductive members are respectively connected to other terminals among the terminals except the ground terminal in a one-to-one correspondence.

[0023] In some embodiments, the second conductive member is at least partially exposed outside the box body, and the second conductive member is used to be electrically connected to the terminal contact assembly.

[0024] In some embodiments, a chip holder is disposed on the box body, the chip holder is provided with a receiving cavity, and the chip is disposed in the receiving cavity.

[0025] In some embodiments, the chip holder is provided with a protective cover, the protective cover is provided with a clamping portion, the chip holder is further provided with a clamped portion, and the protective cover is mounted on the chip holder through the clamping portion and the clamped portion.

[0026] According to another aspect of the utility model, an electronic imaging device is provided, comprising a main body and a door cover, wherein the door cover is provided with a terminal contact assembly, wherein the terminal contact assembly comprises a first contact pin and a second contact pin, wherein the first contact pin and the second contact pin are electrically connected via a conductive member;

[0027] The second contact pin and the conductive member are mounted on the door cover via a contact pin holder, and the second contact pin is located in the middle of the length direction of the door cover;

[0028] The developing box as described in any one of the above items is installed in the main body;

[0029] When the door cover is closed, the second contact pin contacts and is electrically connected to the storage unit of the developing cartridge.

[0030] Beneficial effects of the present invention: The developing box of the present invention sets the grounding terminal on the chip closest to the conductive unit, that is, at a position far away from the driving force receiving unit, which can effectively reduce the influence of the driving force receiving unit and the driving head of the electronic imaging device on the grounding terminal when they are engaged with each other, reduce the vibration of the grounding terminal, and make the chip grounding more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the structure of the electronic imaging device of the first embodiment;

[0032] Figure 2 It is a structural schematic diagram of a developing box at one angle of the first embodiment;

[0033] Figure 3 It is a structural schematic diagram of the developing box of Embodiment 1 from another angle;

[0034] Figure 4 It is a schematic diagram of the cooperation between the developing box and the photosensitive drum of the first embodiment;

[0035] Figure 5 for Figure 4 The local enlarged structure diagram at A in the middle;

[0036] Figure 6 A partial exploded view of the developer cartridge of Example 1 Figure 1 ;

[0037] Figure 7 It is a structural schematic diagram of the developing box of Embodiment 1 from another angle;

[0038] Figure 8 A partial exploded view of the developing box of the first embodiment Figure 2 ;

[0039] Fig. 9 It is an exploded schematic diagram of the developing box and the protective cover of the first embodiment;

[0040] Fig.10 It is a structural schematic diagram of the first conductive member of the developing box of the first embodiment;

[0041] Fig.11 is a schematic diagram of the structure of the electronic imaging device of the second embodiment;

[0042] Fig.12 It is a structural schematic diagram of a door cover of an electronic imaging device according to Embodiment 2;

[0043] Fig.13 It is a structural schematic diagram of a developing box of Embodiment 2 at one angle;

[0044] Fig.14 It is a structural schematic diagram of the developing box of the second embodiment from another angle;

[0045] Fig.15 Schematic diagram of the decomposition of the developing box of the second embodiment Figure 1 ;

[0046] Fig.16 Schematic diagram of the decomposition of the developing box of the second embodiment Figure 2 . DETAILED DESCRIPTION

[0047] The utility model is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] It should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] Embodiment 1

[0053] like Figure 1 and Figure 4 As shown, the electronic imaging device 100 forms an image on a recording material using, for example, an electronic photographic imaging process. The electronic imaging device 100 includes, for example, an electronic photographic copier, an electronic photographic printer (LED printer, laser printer, etc.), an electronic photographic printer-type fax machine, etc. The developing cartridge 200 is detachably mounted in the drum assembly of the electronic imaging device 100, and the drum assembly has a photosensitive member (photosensitive drum 14), the photosensitive drum 14 includes a photosensitive drum shell 141 and a photosensitive material coated on the surface of the photosensitive drum shell 141, and the photosensitive drum shell 141 is a metal circular tubular member, and the outer surface of the two end portions in the length direction is not coated with a photosensitive material; the developing cartridge 200 has a developing member (developing roller 22) for developing an electrostatic latent image formed on the photosensitive member (photosensitive drum 14). The electronic imaging device 100 includes a driving head, and the driving head is used to transmit the driving force of the electronic imaging device 100 to the developing cartridge 200, so that the developing cartridge 200 works. The electronic imaging device 100 includes a main body 10 and a door cover 11. The main body 10 constitutes the appearance of the electronic imaging device 100 and supports various components installed therein. The main body 10 can accommodate one or more developing cartridges 200, and the multiple developing cartridges 200 can accommodate developers of the same or different colors. The door cover 11 is pivotally connected to one side of the main body 10 to open and close the opening portion of the main body 10. The user can replace or repair the developing cartridge 200 after opening the door cover 11.

[0054] like Figure 2 and Figure 3 As shown, the developing box 200 includes a box body 2, a developing roller 22, a powder feeding roller, a driving force receiving unit 23, a conductive unit 24, a storage unit and a handle. The box body 2 includes a cover body and a powder bin bracket 21, and the cover body and the powder bin bracket 21 together enclose a powder bin for containing the developer. The developing roller 22 includes a developing roller shaft 223 and a rubber layer covering the outside of the developing roller shaft 223. The developing roller 22 and the powder feeding roller are rotatably supported on the box body 2. The developing roller shaft 223 extends along the length direction of the box body 2. The driving force receiving unit 23 is arranged at one end of the box body 2 in the length direction, and is used to receive and transmit the driving force of the electronic imaging device 100, thereby driving the developing roller 22, the powder feeding roller and other components to rotate. The end provided with the driving force receiving unit 23 is also called the driving end. The conductive unit 24 is arranged at the other end of the developing box 200 in the length direction, and is used to receive the voltage of the electronic imaging device 100 and transmit the voltage to the developing roller 22 and the powder feeding roller. The end provided with the conductive unit 24 is also called the conductive end. The storage unit stores information related to the developing cartridge 200 (lifespan, model, newness, etc.).

[0055] In order to facilitate the detailed description of the structure of the developing box 200 of this embodiment, as shown in FIG. Figure 2 As shown, the installation direction of the developing box 200 installed on the electronic imaging device 100 is set to the X-axis direction, the X-axis direction is also the width direction of the developing box 200, the length direction of the developing box 200 is the Y-axis direction, and the direction perpendicular to the X-axis direction and the Y-axis direction is the Z-axis direction, which is also the height direction of the developing box 200.

[0056] like Figure 2 and Figure 3 As shown, the developing box 200 is roughly in the shape of a rectangular parallelepiped, and has an upper surface A, a lower surface B, a right surface C, a left surface D, a powder outlet and a rear surface F. In the direction in which the developing box 200 is installed on the electronic imaging device 100, the upper surface A is on the upper side of the installing direction of the developing box 200, the left surface D is on the left side of the installing direction of the developing box 200, and the powder outlet is on the front side of the installing direction of the developing box 200. In the X direction, the direction in which the rear surface F points to the powder outlet is the +X direction, that is, the installing direction of the developing box 200 is the +X direction. The developing roller 22 is arranged at the powder outlet on the front side of the developing box 200, and the handle is arranged on the rear side of the developing box 200. The direction in which the lower surface B points to the upper surface A is the +Z direction, and the direction in which the right surface C points to the left surface D is the +Y direction. The driving force receiving unit 23 is located on the right surface C of the developing box 200, that is, the -Y axis end is the driving end, and the conductive unit 24 is located on the left surface D of the developing box 200, that is, the +Y axis end is the conductive end.

[0057] like Figure 1 As shown, the electronic imaging device 100 is provided with a terminal contact assembly 13, which includes a plurality of terminal contact heads, each of which is provided with a terminal contact head end face and a terminal contact head side face; the storage unit is installed on the box body 2, and is arranged closer to the conductive unit 24 of the developing box 200 than the driving force receiving unit 23 of the developing box 200, and the storage unit stores information such as the ink volume and model of the developing box 200. When the developing box 200 is installed on the electronic imaging device 100, the terminal contact head on the electronic imaging device 100 can abut against the storage unit, so that the electronic imaging device 100 can be electrically connected to the storage unit, and the electronic imaging device 100 can read the information on the developing box 200. The specific structure and working mode of the developing unit are prior art and will not be described here.

[0058] Among them, the electronic imaging device 100 includes a main body 10 and a door cover 11, and the door cover 11 is arranged on the main body 10 in a manner of rotating around a horizontally arranged rotating shaft, and the door cover 11 is located on the rear side of the main body 10 relative to the direction +X axis direction in which the developing box 200 is installed to the electronic imaging device 100, and the rotation of the door cover 11 can open or close the main body 10.

[0059] The terminal contact assembly 13 is disposed on the door cover 11, and a plurality of groups of terminal contact assemblies 13 are disposed on the door cover 11, each group of terminal contact assemblies 13 corresponds to one developing cartridge 200, and the terminal contact heads in each group of terminal contact assemblies 13 are arranged along the length direction of the developing cartridge 200. The terminal contact heads protrude from the inner surface of the door cover 11, and are generally cylindrical.

[0060] like Figures 2 to 10 As shown, the storage unit includes a chip 25 and a conductive connection member in contact with the chip 25, and the conductive connection member includes a first conductive member 26 and a second conductive member 27; the chip 25 is mounted on the box body 2, and preferably, the chip 25 is arranged near the rear surface F of the box body 2. The chip 25 includes a substrate 251 and a plurality of terminals arranged on the surface of the substrate 251, wherein at least one terminal is a ground terminal 252, the substrate 251 is a substantially rectangular plate-shaped member, the length direction of the substrate 251 is the Y-axis direction, and the plurality of terminals are arranged at intervals along the length direction (Y-axis direction) of the substrate 251. The two ends of the substrate 251 in the length direction are respectively a first end and a second end, wherein the first end is farther from the driving force receiving unit 23 than the second end. In this embodiment, the ground terminal 252 is closer to the conductive unit 24 than the other terminals, that is, the distance between the ground terminal 252 and the second end of the substrate 251 is greater than the distance from the other terminals to the second end except the ground terminal 252, that is, the distance between the ground terminal 252 and the driving force receiving unit 23 is greater than the distance between the other terminals and the driving force receiving unit 23.

[0061] like Figure 8As shown, in addition to the ground terminal 252, the multiple terminals may also include a communication terminal 253, a power terminal 254 and a clock terminal 255, and the distance from the communication terminal 253 to the second end of the chip 25 is greater than the distance from the power terminal 254 and the clock terminal 255 to the second end of the chip 25. In this embodiment, the ground terminal 252, the communication terminal 253, the power terminal 254 and the clock terminal 255 are arranged in sequence along the -Y axis direction, that is, the ground terminal 252 is farthest from the driving force receiving unit 23 compared with the other three terminals (the ground terminal 252 is also farthest from the driving end of the developing box 200, and is closest to the conductive end); the communication terminal 253 is used for data communication, and is farther away from the driving force receiving unit 23 than the power terminal 254 and the clock terminal 255, and is closer to the conductive unit 24; the power terminal 254 is used to receive power from the electronic imaging device 100 so as to be able to power the chip 25, and the power terminal 254 is located between the communication terminal 253 and the clock terminal 255 and is farther away from the driving force receiving unit 23 than the clock terminal 255; the clock terminal 255 is connected to the electronic imaging device 100 to record time, and the clock terminal 255 is closest to the driving force receiving unit 23 compared with the other three terminals. Of course, except for the ground terminal 252, the positions of the terminals can also be changed as needed, for example, the communication terminal 253 is set at the position closest to the driving force receiving unit 23 among all the terminals. The above only illustrates one possible implementation method and is not specifically limited here.

[0062] In some other embodiments, the distance between the ground terminal 252 and the driving force receiving unit 23 may also be equal to the distance between the remaining non-ground terminals 252 and the driving force receiving unit 23. As for the specific arrangement of the multiple terminals on the chip 25, for the distance between the ground terminal 252 and the driving force receiving unit 23 is greater than the distance between the remaining non-ground terminals 252 and the driving force receiving unit 23, multiple terminals can be selected to be arranged at intervals, and the arrangement pattern can be a straight line, a broken line or an arc. For the distance between the ground terminal 252 and the driving force receiving unit 23 is equal to the distance between the remaining non-ground terminals 252 and the driving force receiving unit 23, a non-ground terminal 252 and a ground terminal 252 can be arranged in parallel in pairs, and in the X-axis direction, the ground terminal 252 can be set in front of the communication terminal 253, and the distances from the ground terminal 252 and the communication terminal 253 to the driving end and the conductive end are the same. In the X-axis direction, the ground terminal 252 can also be set behind the communication terminal 253, or in front of or behind the power terminal 254 or the clock terminal 255. This structure can not only make the ground terminal 252 farther away from the driving force receiving unit 23, but also reduce the area of ​​the chip 25 substrate 251, saving materials and production costs.

[0063] This embodiment can effectively reduce the influence of the driving force receiving unit 23 and the driving head of the electronic imaging device 100 on the grounding terminal 252 when they are engaged with each other by setting the grounding terminal 252 closest to the conductive unit 24, that is, the grounding terminal 252 is far away from the driving force receiving unit 23, thereby alleviating the vibration of the grounding terminal 252, making the grounding of the chip 25 more stable, and reducing the safety hazard of users.

[0064] like Figures 4 to 10 As shown, in this embodiment, the grounding terminal 252 is electrically connected to the photosensitive drum housing 141 through the first conductive member 26 to ground the chip 25. Specifically, the developer box 200 further includes a stopper 221, which is sleeved at both ends of the developer roller shaft 223. The stopper 221 is a circular ring-shaped member, and a conductive layer 222 is provided on the outer circumferential surface of the stopper 221 sleeved on the developer roller shaft 223 near the conductive end. The first end of the first conductive member 26 is conductively connected to the grounding terminal 252, and the second end of the first conductive member 26 is in contact with the conductive layer 222. When the developer box 200 is installed in the electronic imaging device 100, the stopper 221 is in contact with the photosensitive drum housing 141, so that the conductive layer 222 of the stopper 221 is in contact with the photosensitive drum housing 141. Since the photosensitive drum housing 141 is directly or indirectly grounded, the chip 25 can be electrically connected to the photosensitive drum housing 141 through the first conductive member 26, thereby achieving a grounding effect.

[0065] like Figure 6 , Figure 7 and Fig.10 As shown, the first conductive member 26 includes a first connecting segment 261, an intermediate segment 262 and a second connecting segment 263. The intermediate segment 262 extends on the surface of the box body 2 and connects the first connecting segment 261 and the second connecting segment 263 respectively. The first connecting segment 261 is conductively connected to the ground terminal 252, and the second connecting segment 263 is in contact with the conductive layer 222. Specifically, the intermediate segment 262 can be first connected to the first connecting segment 261 and extend along the X-axis on the lower surface B of the box body 2, and then bend at a position close to the developing roller 22 and extend along the X-axis. It extends in the Y-axis direction to the junction of the lower surface B and the left surface D of the box body 2, then bends and extends along the Z-axis on the left surface D, and finally bends at a position close to the upper surface A of the box body 2 and extends along the X-axis direction, and finally connects to the second connecting section 263 at a position close to the conductive layer 222. The second connecting section 263 is tangentially contacted and connected with the conductive layer 222. In order to fix the first conductive component 26, an installation groove can be opened on the lower surface B of the box body 2 corresponding to the extension position of the middle section 262 to fix the first conductive component 26.

[0066] By providing the first conductive member 26, the stopper 221 and the conductive layer 222, when the developing box 200 is installed on the electronic imaging device 100, the conductive layer 222 connected to the second connecting section 263 of the first conductive member 26 can be in contact with the photosensitive drum housing 141 in the electronic imaging device 100 to achieve grounding, thereby preventing the chip 25 from being damaged by static electricity of the electronic imaging device 100. The grounding terminal 252 is arranged at a position away from the driving force receiving unit 23, and the position where the first connecting section 261 contacts the grounding terminal 252 is also away from the driving force receiving unit 23, thereby reducing the friction between the grounding terminal 252 and the first conductive member 26 caused by the vibration of the driving force receiving unit 23, reducing wear, extending the service life, and reducing the risk of poor grounding of the grounding terminal 252.

[0067] Further, such as Figure 6 and Fig.10 As shown, the first connecting section 261 is provided with an electrical connecting portion 264 for contacting the grounding terminal 252. The electrical connecting portion 264 can be an arm extending from the first connecting section 261. The electrical connecting portion 264 is elastic. When it abuts against the grounding terminal 252, it will produce a certain deformation, so that the electrical connecting portion 264 is close to the grounding terminal 252, which can make the electrical connection between the first conductive member 26 and the grounding terminal 252 more stable.

[0068] In some other embodiments, such as Figure 3 , Figure 6 and Fig.10 As shown, the first conductive member 26 further includes an extension section 265, one end of the extension section 265 is conductively connected to the first connecting section 261, a portion of the extension section 265 is exposed outside the rear surface F of the box body 2, and the other end of the extension section 265 can be engaged with the box body 2 through a buckle / arm structure. The first conductive member 26 may also not be provided with the extension section 265, and this is not strictly limited.

[0069] like Figures 2 to 4 , Figure 6 , Figure 8 and Fig. 9As shown, the second conductive member 27 is used to contact and electrically connect with other terminals except the ground terminal 252. The number of the second conductive members 27 is adapted to the number of other terminals. In this embodiment, the number of other terminals except the ground terminal 252 is three, and the number of the second conductive members 27 is also three accordingly. Each other terminal is electrically connected to a second conductive member 27. At least a portion of the second conductive member 27 is exposed on the rear surface F of the box body 2. After the developing box 200 is installed on the electronic imaging device 100, during the closing process of the door cover 11, the terminal contact head in the terminal contact assembly 13 approaches the storage unit from the back to the front as the door cover 11 rotates. After the door cover 11 is closed, the second conductive member 27 contacts and electrically connects with the end face of the terminal contact head, thereby establishing communication between the chip 25 and the electronic imaging device 100, so that the electronic imaging device 100 can read information related to the developing box 200 from the chip 25. The second conductive member 27 is also provided with an elastic electrical connection portion for contacting other terminals to ensure the stability of the electrical connection between the second conductive member 27 and other terminals. In summary, it can be seen that the ground terminal 252 is not in contact with the terminal contact component 13 of the electronic imaging device 100 to establish electrical connection, and only the other three terminals except the ground terminal 252 are in contact with the terminal contact component 13 to establish electrical connection.

[0070] Further, such as Figure 6 As shown, in order to ensure that the chip 25 does not move when installed on the box body 2, a chip holder 211 is also provided on the box body 2. The chip holder 211 has a receiving cavity 211a. The chip 25 is arranged in the receiving cavity 211a, and the chip holder 211 blocks the outside of the chip 25 terminal.

[0071] In this embodiment, Figure 6 and Figure 8 As shown, the chip 25 is installed in the accommodating cavity 211a of the chip holder 211 from bottom to top, and the terminal of the chip 25 faces the +Z axis direction. The chip 25 can be installed on the chip holder 211 by means of snapping, gluing, etc., and part of the first conductive member 26 extends into the chip holder 211, thereby abutting against the ground terminal 252 on the chip 25 inside the chip holder 211. A part of the second conductive member 27 extends into the chip holder 211 and contacts other terminals except the ground terminal 252. A plurality of first mounting grooves can be provided on the chip holder 211, and the first conductive member 26 and the second conductive member 27 are installed in the first mounting grooves, so that the positions of the first conductive member 26 and the second conductive member 27 are limited to ensure the stability of the contact.

[0072] like Figure 8 and Fig. 9As shown, in order to further fix and protect the chip 25, the developer box 200 of this embodiment further includes a protective cover 28, the protective cover 28 is provided with a clamping portion 28a, and the chip bracket 211 is provided with a clamped portion 211c. Specifically, the clamping portion 28a can be a buckle, and the clamped portion 211c can be a slot. The protective cover 28 covers the outer side of the chip 25 through the clamping of the clamping portion 28a and the clamped portion 211c. The assembly direction of the protective cover 28 can be from bottom to top (i.e., along the +Z axis direction) or from back to front (i.e., along the +X axis direction).

[0073] The developer box 200 of this embodiment connects the photosensitive drum shell 141 and the grounding terminal 252 of the chip 25 through the first conductive member 26 to ground the chip 25, which can avoid the problem of poor grounding caused by the terminal contact head in the electronic imaging device 100 being invaded by foreign objects, being deformed under pressure for a long time, and having a small contact area with the grounding terminal 252. In addition, the grounding terminal 252 is arranged at a position closest to the conductive unit 24 (close to the conductive end) compared with each terminal, that is, the position farthest from the driving force receiving unit 23 (far away from the driving end), thereby reducing the influence of vibration on the grounding terminal 252, making the grounding more stable, thereby ensuring the safety of the user during use.

[0074] Embodiment 2

[0075] This embodiment provides another developing box and an electronic imaging device. Compared with the first embodiment, the difference lies in that the storage unit is different and the terminal contact assembly of the electronic imaging device is different.

[0076] In this embodiment, Fig.11 and Fig.12 As shown, the terminal contact assembly 13 of the electronic imaging device 100 includes a first contact pin group and a second contact pin group, the first contact pin group includes a plurality of first contact pins 13a, and the second contact pin group includes a plurality of second contact pins 13b. Specifically, the electronic imaging device 100 includes a main body 10 and a door cover 11, wherein the door cover 11 is arranged on the main body 10 in a manner of rotating around a horizontally arranged rotating shaft, and the door cover 11 is located at the rear side of the main body 10 relative to the direction (+X axis direction) in which the developing box 200 is installed to the electronic imaging device 100, and the rotation of the door cover 11 can open or close the main body 10.

[0077] like Fig.11 and Fig.12As shown, the first contact pin group and the second contact pin group are arranged on the inner side of the door cover 11. The first contact pin group and the second contact pin group on the door cover 11 are arranged in multiple groups. Each group of the first contact pin group is connected with a second contact pin group to form an electrical connection group. Each electrical connection group corresponds to a developing box 200. The second contact pin group is located in the middle position in the length direction (Y-axis direction) of the door cover 11. The first contact pin group can be located at any position on the door cover 11, preferably close to the +Y-axis end of the door cover 11, and each first contact pin group is flush with a second contact pin group in the length direction of the door cover 11. In the same electrical connection group, each first contact pin 13a is connected to a second contact pin 13b in a one-to-one correspondence through a conductive member 15, that is, the second contact pin 13b is electrically connected to the first contact pin 13a through the conductive member 15. The conductive member 15 can be a conductive steel sheet, etc. Each of the first contact pin 13a and the second contact pin 13b is provided with a contact end surface and a contact side surface. The first contact pin 13a and the second contact pin 13b protrude from the inner surface of the door cover 11 and are substantially cylindrical.

[0078] Further, such as Fig.11 and Fig.12 As shown, a stylus holder 12 may be further provided on the inner side of the door cover 11 for mounting the second stylus 13b and the conductive member 15. Preferably, the stylus holder 12 may be mounted on the door cover 11 by gluing, so that the second stylus 13b and the conductive member 15 are electrically connected to the first stylus 13a. Before mounting the developing cartridge 200 on the electronic imaging device 100, the stylus holder 12 may be mounted on the door cover 11, so that the second stylus 13b on the stylus holder 12 can be electrically connected to the first stylus 13a provided on the electronic imaging device 100. The electronic imaging device 100 may be electrically connected to the storage unit on the developing cartridge through the first stylus 13a, the conductive member 15, and the second stylus 13b in sequence.

[0079] Further, such as Fig.11 and Fig.12 As shown, an elastic member 16 is further provided on the inner side of the door cover 11. After the developing box 200 is installed in the electronic imaging device 100 and the door cover 11 is closed, the elastic member 16 contacts the rear surface F of the developing box 200. The elastic member 16 is located on the -Y-axis side of the second contact pin 13b in the length direction of the door cover 11. The elastic member 16 and the first contact pin 13a are respectively located on both sides of the length direction of the door cover 11 (i.e., the Y-axis direction), that is, the second contact pin 13b is located in the middle of the elastic member 16 and the first contact pin 13a.

[0080] like Figures 13 to 16As shown, the storage unit is arranged in the middle of the box body 2 in the length direction. The storage unit includes a chip 25 and a conductive connector 27a. The first conductive member 26 and the stopper 221 as in the first embodiment are not arranged. The structure of the conductive connector 27a of this embodiment is similar to the structure of the second conductive member 27 of the first embodiment. The chip 25 is mounted on the box body 2. Preferably, the chip 25 is arranged close to the rear surface F of the box body 2. The manner in which the chip 25 is arranged on the box body 2 is the same as in the first embodiment. The arrangement manner of the terminals on the substrate 251 of the chip 25 is the same as in the first embodiment, that is, in the present embodiment, the ground terminal 252 of the chip 25 is farther away from the driving force receiving unit 23 (closer to the conductive unit 24) than the other terminals.

[0081] like Figures 11 to 16 As shown, the conductive connector 27a is used to contact and electrically connect with each terminal of the chip 25, the number of the conductive connectors 27a is adapted to the number of the terminals, each terminal is in contact with and electrically connected with a conductive connector 27a, at least a portion of the conductive connector 27a is exposed outside the rear surface F of the box body 2, after the developer box 200 is installed on the electronic imaging device 100, during the closing process of the door cover 11, the second contact pin 13b and the first contact pin 13a are close to the storage unit from back to front as the door cover 11 rotates, after the door cover 11 is closed, the conductive connector 27a contacts and electrically connects with the contact end face of the second contact pin 13b, and then establishes communication with the electronic imaging device 100 through the conductive member 15 and the first contact pin 13a, so that the electronic imaging device 100 can read information related to the developer box 200 from the chip 25. The number of the second contact pins 13b matches and corresponds to the number of the conductive connectors 27a. In this embodiment, the number of the second contact pins 13b, the first contact pins 13a, the conductive member 15, the conductive connector 27a, and the terminal are all four.

[0082] When the second contact pin 13b contacts the conductive connector 27a of the storage unit, it will apply a force toward the inside of the main body 10 to the developer box 200, and can force the developer box 200 along the installation direction (+X axis direction) to prevent the developer box 200 from swinging and ensure that the developer roller 22 is close to the photosensitive drum 14. While the second contact pin 13b applies a force to the developer box 200, the developer box 200 also generates a reaction force on the second contact pin 13b, and the reaction force also acts on the middle position of the door cover 11 (the position where the second contact pin 13b is set on the door cover 11) through the second contact pin 13b. The contact between the second contact pin 13b and the conductive connector 27a can be elastic contact or non-elastic contact. When the two are elastically in contact, a compression spring that abuts against the second contact pin 13b can be set inside the contact pin holder 12, so that the second contact pin 13b can be elastically retracted.

[0083] Further, such as Fig.15As shown, the conductive connector 27a is provided with an electrical connection portion 271 for contacting the terminal of the chip 25. The electrical connection portion 271 can be an arm portion extending from the conductive connector 27a. The electrical connection portion 271 is elastic and will deform to a certain extent when it abuts against the terminal, so that the electrical connection portion 271 is tightly attached to the terminal surface, thereby making the electrical connection between the conductive connector 27a and the terminal more stable.

[0084] The storage unit of the developing box 200 of this embodiment is located in the middle position of the box body 2, and the storage unit is electrically connected to the second contact pin 13b on the door cover 11 of the electronic imaging device 100 by means of the external contact pin holder 12. Under this structural setting, when the door cover 11 is closed, the second contact pin 13b on the door cover 11 will apply a thrust to the developing box 200 at the middle position of the developing box 200. Correspondingly, the reaction force of the developing box 200 on the door cover 11 is also located in the middle position of the door cover 11, and at this time, the interaction force between the elastic member 16 and the developing box 200 is also small, so Therefore, compared with the first contact pin 13a and the elastic member 16 applying thrust on both sides of the developer box 200, the setting of the second contact pin 13b prevents the door cover 11 from being deformed, and can effectively solve the problem of poor contact and unrecognizable contact between the contact pin on the door cover 11 of the electronic imaging device 100 and the chip 25; at the same time, this structural setting realizes that the grounding terminal 252 of the developer box 200 is farther away from the driving force receiving unit 23 than the other terminals, thereby reducing the hidden danger of poor grounding caused by the vibration of the driving force receiving unit 23, and effectively ensuring the safety of users.

[0085] In the first embodiment, since the terminal contact assembly 13 (i.e., the first contact pin group) of the electronic imaging device 100 is arranged close to the conductive end 24 of the developer box 200, when the storage unit of the developer box 200 is electrically connected to the terminal contact assembly 13 of the electronic imaging device 100, it is easy for the storage unit to be unevenly stressed and have poor contact. By separately setting the second contact pin group, the position of the electrical connection between the storage unit of the developer box and the electronic imaging device 100 is changed. The storage unit is set in the middle position of the developer box 200, and the second contact pin 13b is also relatively set in the middle position of the door cover 11, so that the electrical connection between the storage unit and the electronic imaging device 100 is more stable. In addition, the position of the second contact pin group on the door cover 11 and the position of the storage unit on the developer box 200 can also be changed as needed to make the electrical connection between the two more stable.

[0086] The other structures of the developing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0087] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A developing cartridge, detachably mounted in an electronic imaging device, wherein a terminal contact assembly is provided in the electronic imaging device, characterized in that: The developing box comprises: A box body, containing a developer inside; A developing roller rotatably supported on the box body; A driving force receiving unit, used for receiving driving force from the electronic imaging device, and arranged at one end of the box body in the length direction; A conductive unit, used for receiving a voltage from an electronic imaging device, and arranged at the other end of the box body in the length direction; A storage unit, arranged on the box body and electrically connected to the terminal contact assembly, wherein the storage unit comprises a chip, the chip comprises a plurality of terminals, and the plurality of terminals comprises at least one ground terminal; The ground terminal is closer to the conductive unit than other terminals.

2. The developing cartridge according to claim 1, characterized in that: The plurality of terminals further include a communication terminal, and the communication terminal is closer to the driving force receiving unit than the ground terminal.

3. The developing cartridge according to claim 1 or 2, characterized in that: The storage unit is located in the middle of the box body in the length direction; or, the storage unit is arranged close to the conductive unit in the length direction.

4. The developing cartridge according to claim 1 or 2, characterized in that: The storage unit further comprises a conductive connection member, the chip is electrically connected to the conductive connection member, and the conductive connection member is in contact with and electrically connected to the terminal contact assembly.

5. The developing cartridge according to claim 4, characterized in that: The terminal contact assembly includes a first contact pin and a second contact pin, the first contact pin and the second contact pin are electrically connected via a conductive member, and a portion of the conductive connecting member exposed outside the box body contacts and is electrically connected to the second contact pin.

6. The developing cartridge according to claim 4, characterized in that: At least a portion of the conductive connection member is exposed outward from the rear surface of the box body.

7. The developing cartridge according to claim 1 or 2, characterized in that: The storage unit further comprises a conductive connecting member, the conductive connecting member comprises a first conductive member, the electronic imaging device comprises a photosensitive drum, the photosensitive drum comprises a photosensitive drum shell; the grounding terminal is electrically connected to the photosensitive drum shell through the first conductive member.

8. The developing cartridge according to claim 7, wherein: It also includes a limiting member, which is arranged on the developing roller shaft of the developing roller, and the limiting member has a conductive layer. The first conductive member is in contact with and electrically connected to the conductive layer, and the conductive layer is also in contact with and electrically connected to the photosensitive drum shell.

9. The developing cartridge according to claim 8, characterized in that: The limiting member is arranged at one end of the developing roller shaft close to the conductive unit.

10. The developing cartridge according to claim 8, characterized in that: The first conductive member includes a first connecting segment, a middle segment and a second connecting segment, wherein the middle segment extends on the surface of the box body and connects the first connecting segment and the second connecting segment respectively, the first connecting segment contacts the ground terminal, and the second connecting segment contacts the conductive layer.

11. The developing cartridge according to claim 10, characterized in that: The first connecting section is provided with an electrical connecting portion, and the electrical connecting portion is in elastic contact with the grounding terminal.

12. The developing cartridge according to claim 10, characterized in that: The conductive layer is arranged on the outer circumferential surface of the limiting member, and the second connecting section is in tangential contact with the conductive layer.

13. The developing cartridge according to any one of claims 8 to 12, characterized in that: The conductive connection member further includes a plurality of second conductive members, and the plurality of second conductive members are respectively connected to the other terminals among the terminals except the ground terminal in a one-to-one correspondence.

14. The developing cartridge according to claim 13, wherein: The second conductive member is at least partially exposed outside the box body, and the second conductive member is used for being electrically connected to the terminal contact assembly.

15. The developing cartridge according to any one of claims 1, 2, 5, 6, 8 to 12, 14, characterized in that: The box body is provided with a chip bracket, the chip bracket is provided with a containing cavity, and the chip is arranged in the containing cavity.

16. The developing cartridge according to claim 15, characterized in that: The chip bracket is provided with a protective cover, the protective cover is provided with a clamping portion, and the chip bracket is also provided with a clamped portion, and the protective cover is mounted on the chip bracket through the clamping portion and the clamped portion.

17. An electronic imaging device, comprising a main body and a door cover, characterized in that: The door cover is provided with a terminal contact assembly, the terminal contact assembly includes a first contact pin and a second contact pin, and the first contact pin and the second contact pin are electrically connected through a conductive member; The second contact pin and the conductive member are mounted on the door cover via a contact pin holder, and the second contact pin is located in the middle of the length direction of the door cover; The developing cartridge according to any one of claims 1 to 6 is installed in the main body; When the door cover is closed, the second contact pin contacts and is electrically connected to the storage unit of the developing cartridge.

Images