Developing cartridge

Abstract

The developing box provided by the utility model comprises a chip component provided with a chip, a chip bracket and a conductive piece, the conductive piece is used for establishing communication connection between the chip and imaging equipment, the chip is used for storing parameter information of the developing box and is provided with an electric contact part which is used for forming electric contact with the conductive piece, and the chip bracket is used for accommodating the chip; one end of the conductive piece is used for being connected with the electric contact part, and the other end of the conductive piece is used for being connected with imaging equipment; the conductive piece in the developing box provided by the utility model has elasticity and can generate elastic deformation, so that on one hand, the developing box can be suitable for imaging equipment of different models, and on the other hand, when the developing box is mounted on the imaging equipment, the conductive piece can form stable electric contact with a contact pin of the imaging equipment.

Description

Technical Field

[0001] The utility model relates to the field of electronic photographic imaging, in particular to a developing box which can be detachably installed in an electronic photographic imaging device. Background Art

[0002] The developing box can be detachably installed in the imaging device, and a chip for storing the parameter information of the developing box is fixedly provided on the developing box, and the chip is used to form an electrical contact with the imaging device. However, there are differences in the positions of the chip settings of different models of developing boxes. Except for the position of the chip, the other structures of the developing boxes are basically the same. Therefore, on the one hand, the scope of application of the developing box arranged in this way is relatively small, and on the other hand, when the developing box arranged in this way is installed in different imaging devices, the electrical contact part on the chip cannot form a stable electrical contact with the imaging device. Utility Model Content

[0003] The developing box provided by the utility model can at least solve one of the above technical problems.

[0004] The utility model provides a developing box which can be detachably mounted to an imaging device having a contact pin. The developing box comprises a chip component having a chip, a chip holder and a conductive member. The conductive member is used to establish a communication connection between the chip and the imaging device. The chip is used to store parameter information of the developing box and is provided with an electrical contact portion for forming electrical contact with the conductive member. The chip holder is used to accommodate the chip. The conductive member is constructed as an elastic member, one end of the conductive member is used to be connected to the electrical contact portion, and the other end is used to be connected to the imaging device.

[0005] The developing box includes a developing roller, a developing shell, a driving head and an end cover. The developing shell is used to accommodate the developer. The developing roller is rotatably arranged in the developing shell for conveying the developer to the outside of the developing box. The driving head is exposed through the end cover and is used to receive a driving force from the imaging device to drive the developing roller to rotate. The chip holder is arranged on the developing shell or the end cover.

[0006] The developing box is also provided with a connecting piece for connecting the chip support and the end cover / developing housing, and the connecting piece is configured as a cantilever protruding from the end cover / developing housing / chip support.

[0007] The chip includes a substrate, a first protrusion and a second protrusion, the electrical contact portion is located on the substrate, the first protrusion and the second protrusion extend from the substrate in different directions, the protruding size of the first protrusion is different from the protruding size of the second protrusion, and the electrical contact portion is closer to one of the first protrusion and the second protrusion.

[0008] The developing shell includes a first shell and a second shell, the arrangement direction of the first shell and the second shell in the developing box is the up-down direction, the direction intersecting the up-down direction is the front-to-back direction, the developing roller is located in front of the developing shell, the developing box also includes a second positioning member and a third positioning member respectively used to cooperate with the first protrusion and the second protrusion, the size of the second positioning member in the front-to-back direction is different from the size of the third positioning member in the front-to-back direction; the chip bracket includes a cover plate and a mounting seat, the cover plate is located above the mounting seat, one of the second positioning member and the third positioning member protrudes upward from the mounting seat, and the other protrudes downward from the cover plate.

[0009] When the conductive member is set as a conductive steel sheet, the conductive steel sheet includes a first connecting part for elastically electrically contacting a contact pin in an imaging device and a second connecting part for electrically contacting the electrical contact part, and at least a portion of the second connecting part is constructed to protrude toward the electrical contact part to form an arc surface.

[0010] At least one positioning groove is arranged on the cover plate, and the positioning groove enables the second connecting portion of the conductive member to be positioned in the chip bracket.

[0011] The conductive member is further provided with a third connection portion electrically connected to the first connection portion, and an intermediate portion is provided between the first connection portion and the third connection portion, and a recessed portion for allowing the contact pin to enter is provided on the intermediate portion.

[0012] The conductive member further includes a special-shaped portion disposed on the first connecting portion, wherein the special-shaped portion is configured to be deformed during the process of taking the developing cartridge out of the imaging device.

[0013] When the conductive member is configured as a conductive spring, the second mounting portion is disposed on the cover plate, and the conductive spring is positioned by the cover plate.

[0014] The chip holder also includes a chip mounting cavity located between the cover plate and the mounting seat. The chip holder is constructed as a polygon with multiple sides. The chip holder is provided with a first mounting portion on one side thereof for allowing the chip to enter and be mounted to the chip mounting cavity. The chip holder is provided with a second mounting portion on another side thereof for allowing the second connecting portion to enter the chip mounting cavity and be positioned in the positioning groove; alternatively, the first mounting portion and the second mounting portion are arranged on a through side surface of the chip holder.

[0015] The conductive part in the developing box provided by the utility model is elastic and can produce elastic deformation. On the one hand, the developing box can be applicable to different models of imaging devices, thereby expanding the application range of the developing box; on the other hand, when the developing box is installed to the imaging device, the conductive part can form a stable electrical contact with the contact pin of the imaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the developing box involved in the utility model.

[0017] Figure 2A It is an exploded view of some components of the developing box involved in the utility model.

[0018] Figure 2B It is a plan view of the chip involved in the utility model.

[0019] Figure 3A It is a side view of the chip bracket involved in the utility model.

[0020] Figure 3B The utility model relates to a partial side view of a developing box installed with a conductive member when viewed from left to right.

[0021] Figure 4 It is a three-dimensional diagram of the chip bracket involved in the utility model.

[0022] Figure 5 is along Figure 2A A three-dimensional image of the chip holder after cutting along the AA direction.

[0023] Figure 6 It is a three-dimensional diagram of a deformed conductive member involved in the utility model.

[0024] Figure 7 It is a three-dimensional diagram of another conductive member involved in the utility model.

[0025] Figure 8 This is an exploded view of another conductive member involved in the utility model DETAILED DESCRIPTION

[0026] like Figure 1 and Figure 2A As shown, in an electronic photographic imaging device such as a laser printer or a copier, a detachably mounted processing cartridge is usually provided, the processing cartridge comprising a developing cartridge 10 and a drum cartridge. In some embodiments, the drum cartridge is integrated in the imaging device, and the developing cartridge 10 is detachably mounted in the imaging device. In some embodiments, the developing cartridge 10 and the drum cartridge may also be separately arranged, and the developing cartridge 10 needs to be detachably mounted to the drum cartridge first, and then the developing cartridge 10 and the drum cartridge are detachably mounted to the imaging device together. The drum cartridge comprises a photosensitive housing and a photosensitive drum rotatably disposed in the photosensitive housing, and the developing cartridge 10 comprises a developing housing 11 for accommodating a developer and a developing roller 12 rotatably disposed on the developing housing 11. When the imaging device is developing, the developing roller 12 transports the developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum.

[0027] (Developer Box)

[0028] like Figure 1 and Figure 2AAs shown, the developing box 10 further includes a protective cover 13 and a handle 14. The protective cover 13 is used to protect the developing roller 12 before the developing box 10 is installed, and the handle 14 is used for the user to take and place the developing box 10. The developing housing 11 is provided with a first housing 111 and a second housing 112, and a developing chamber 113 for accommodating the developer is formed between the first housing 111 and the second housing 112. A stirring frame 114 for stirring the developer is provided in the developing chamber 113, and the developing box 10 further includes a powder knife 115 for controlling the thickness of the developer on the surface of the developing roller 12, and the powder knife 115 is located between the developing roller 12 and the handle 14.

[0029] For the convenience of the following description, the developer box 10 is normally placed on a horizontal surface, the gravity direction of the developer box 10 is the downward direction, the direction opposite to the gravity direction is the upward direction, the first shell 111 and the second shell 112 are arranged in the up-down direction, the direction intersecting the up-down direction is the front-to-back direction, and along the front-to-back direction, the developing roller 12 and the handle 14 are respectively located on both sides of the developer box 10 / developing shell 11, or in other words, the protective cover 13 / developing roller 12 is located in front of the developing shell 11, and the handle 14 is located at the rear of the developing shell 11, The intersection of the up-down direction and the front-to-back direction is the left-right direction, and the developing roller 12 rotates in the developing housing 11 around a rotation axis extending along the left-to-right direction. Preferably, the left-to-right direction, the front-to-back direction, and the up-to-down direction are orthogonal to each other; the developing box 10 is also provided with a driving head 18 for receiving a driving force from an imaging device, and the driving head 18 is exposed through an end cover 15, and the end cover 15 is located on the left / right side of the developing box 10. The driving force received by the driving head 18 is transmitted to other components such as the developing roller 12 and the stirring frame 114 through a force transmission assembly 19.

[0030] (Chip components)

[0031] like Figure 2A As shown, the developing box 10 is also provided with a chip component 16 for establishing a communication connection between the developing box 10 and the imaging device, and the chip component 16 includes a chip 161, a chip bracket 162 and at least one conductive member 17, and the conductive member 17 is configured to connect the chip 161 and the elastic member 9 of the imaging device; the chip 161 is provided with an electrical contact portion / gold finger 163 for forming an electrical contact with a contact pin in the imaging device through the conductive member 17, and the chip 161 is used to store parameter information of the developing box 10. In one embodiment, the electrical contact portion 163 of the chip 161 faces upward; the chip bracket 162 is connected to the end cover 15 / developing housing 11 through a connecting member 20, and the connecting member 20 is configured as a cantilever protruding from the end cover 15 / developing housing 11 / chip bracket 162, so that through the connecting member 20, the chip bracket 162 is movable relative to the end cover 15 / developing housing 11.

[0032] (chip)

[0033] like Figure 2B As shown, the chip 161 includes a substrate 1611, a first protrusion 1612 and a second protrusion 1613, and the electrical contact portion 163 is arranged on the substrate 1611. After the chip 161 is mounted on the chip holder 162, the first protrusion 1612 is constructed as a protrusion extending from the substrate 1611 toward the front, and the second protrusion 1613 is constructed as a protrusion extending from the substrate 1611 toward the rear. Specifically, the first protrusion 1612 and the second protrusion 1613 extend at different distances in the front-to-back direction, and the electrical contact portion 163 is closer to the first protrusion 1612 / the second protrusion 1613.

[0034] The first protrusion 1612 and the second protrusion 1613 can be called fool-proof parts, which are used to cooperate with the chip holder 162 to position the chip 161 in the chip holder 162 to achieve fool-proofing, that is, to avoid the chip 161 from being installed incorrectly and affecting subsequent use; optionally, at least one of the first protrusion 1612 and the second protrusion 1613 is set in the chip 161.

[0035] (Chip holder)

[0036] like Figure 2A As shown, the chip holder 162 is used to support and accommodate the chip 161. The chip holder 162 includes a cover plate 1621, a mounting seat 1622, and a chip mounting cavity 1623 formed between the cover plate 1621 and the mounting seat 1622. The cover plate 1621 is located above the mounting seat 1622. The chip holder 162 is constructed as a polygon with multiple sides. The chip holder 162 is provided with a first mounting portion 1624 on one side thereof, and the chip holder 162 is provided with a second mounting portion 1625 on the other side thereof; in one embodiment, the first mounting portion 1624 is configured as a first mounting opening for allowing the chip 161 to enter and be mounted to the chip mounting cavity 1623, and the second mounting portion 1625 is configured as a second mounting opening for allowing at least a portion of the conductive member 17 to enter the chip mounting cavity 1623.

[0037] In one implementation, the first mounting portion 1624 and the second mounting portion 1625 may be disposed at the same opening, or the first mounting portion 1624 and the second mounting portion 1625 may be disposed on the same side of the chip holder 162 .

[0038] In one implementation, the first mounting portion 1624 and the second mounting portion 1625 are not disposed at the same opening, or the first mounting portion 1624 and the second mounting portion 1625 are disposed at different sides of the chip holder 162 .

[0039] like Figure 4 and Figure 5As shown, at least one first positioning member is provided on the cover plate 1621 of the chip holder 162, and the first positioning member is configured as a positioning groove 165, and the positioning groove 165 enables at least a portion of the conductive member 17 to be positioned in the chip holder 162, and the number of the positioning grooves 165 matches the number of the conductive members 17; the positioning groove 165 faces the electrical contact portion 163.

[0040] like Figure 3A and Figure 5 As shown, a first support member 166 and a second support member 167 are provided on the mounting seat 1622 of the chip holder 162. The first support member 166 and the second support member 167 are used to support the chip 161. The first support member 166 and the second support member 167 are both provided with a support surface 1671 for supporting the chip 161; along the up and down directions, the support surface 1671 is higher than the bottom surface of the chip mounting cavity 1623, that is, an accommodating cavity 1626 is also formed in the chip mounting cavity 1623, and the accommodating cavity 1626 can be used to accommodate other components of the chip 161 / chip holder 162, such as a power supply unit for providing power to the chip, a wafer for storing information, etc.

[0041] like Figure 3A and Figure 5 As shown, the chip holder 162 is also provided with a second positioning member 168 and a third positioning member 169 which protrude upward from the mounting seat 1622. In one embodiment, the second positioning member 168 and the third positioning member 169 are formed to protrude upward from at least a portion of the support surface 1671, and the size of the second positioning member 168 in the left and right directions is different from the size of the third positioning member 169 in the left and right directions. The second positioning member 168 and the third positioning member 169 are used to cooperate with the first protrusion 1612 and the second protrusion 1613 of the chip 161. Through the mutual cooperation between the second positioning member 168, the third positioning member 169 and the first protrusion 1612 and the second protrusion 1613, the chip 161 can be positioned on the chip holder 162 to achieve fool-proofing; optionally, only one of the second positioning member 168 and the third positioning member 169 can be set on the mounting seat 1622.

[0042] In some embodiments, the second positioning member 168 and the third positioning member 169 may also protrude downward from the cover plate 1621 ; or, one of the second positioning member 168 and the third positioning member 169 may protrude upward from the mounting seat 1622 , and the other may protrude downward from the cover plate 1621 .

[0043] (Conductive parts)

[0044] like Figure 1 and Figure 2AAs shown, in this embodiment, the conductive member 17 is configured as a conductive steel sheet, preferably, the conductive member 17 is configured into a polygonal shape; the conductive member 17 at least includes a first connecting portion 171 and a second connecting portion 172 electrically connected to each other, wherein the first connecting portion 171 is used to electrically contact with a contact pin of the imaging device, and the second connecting portion 172 is used to electrically contact with the electrical contact portion 163, the first connecting portion 171 is tilted relative to the second connecting portion 172, and the first connecting portion 171 has a first surface for electrically contacting the contact pin, and the second connecting portion 172 has a second surface for electrically contacting the electrical contact portion 163, and the first surface is not parallel to the rotation axis of the developing roller 12, so that when the first connecting portion 171 abuts against the contact pin, the first connecting portion 171 can be elastically deformed to make the two in close contact.

[0045] Alternatively, if Figure 2A and Figure 3B As shown, according to the shape of the contact pin of the imaging device, in order to make the conductive member 17 more stably contact with the contact pin of the imaging device, the conductive member 17 also includes a third connecting portion 173 electrically connected to the first connecting portion 171. Preferably, the first connecting portion 171 and the third connecting portion 173 intersect to form an acute angle therebetween, that is, the conductive member 17 is configured to be in a triangular shape. When the developing box 10 is installed to the imaging device, at least one of the first connecting portion 171 and the third connecting portion 173 is in electrical contact with the contact pin of the imaging device.

[0046] (Deformation method)

[0047] In one embodiment, the second connection portion 172 and the electrical contact portion 163 are in point contact.

[0048] In one embodiment, if Figure 3B As shown, at least a portion of the second surface is constructed to protrude toward the electrical contact portion 163. At this time, the second surface is formed into an arc surface, so that surface contact can be formed between the second surface and the electrical contact portion 163, ensuring that the conductive member 17 and the electrical contact portion 163 form a stable electrical contact; the second connecting portion 172 is installed on the cover plate 1621 through the second mounting portion 1625. Specifically, the second connecting portion 172 is positioned in the positioning groove 165.

[0049] In some embodiments, the electrical contact portion 163 in the chip 161 may also face downward, and the second connection portion 172 of the conductive member 17 needs to reach below the electrical contact portion 163 to form an electrical contact with the electrical contact portion 163 .

[0050] like Figure 6As shown, in some embodiments, the conductive member 17 also includes a shaped portion 1711 disposed on the first connecting portion 171. Optionally, the shaped portion 1711 protrudes toward / backward from the second connecting portion 172. When the shaped portion 1711 protrudes toward the second connecting portion 172, the volume of the conductive member 17 can be reduced. The conductive member 17 also includes a middle portion 1713 disposed between the first connecting portion 171 and the third connecting portion 173 and a recessed portion 1712 located on the middle portion 1713. When a contact pin of an imaging device is in electrical contact with the recessed portion 1712, on the one hand, the conductive member 17 disposed in this way can enable the contact pin to enter the recessed portion 1712, so that the contact pin maintains a more stable electrical contact with the conductive member 17. On the other hand, during the process of removing the developing box 10, when the third connecting portion 173 interferes with the imaging device, the conductive member 17 will be deformed to a certain extent through the shaped portion 1711, so that the developing box 10 can be smoothly removed.

[0051] like Figure 7 and Figure 8 As shown, in some embodiments, the conductive member 17 can also be constructed as a conductive spring 17, one end of the conductive spring 17 is used to connect the electrical contact portion 163, and the other end is used to make electrical contact with a contact pin in the imaging device; the cover plate 1621 is provided with at least one mounting hole 1627 (another embodiment of the second mounting portion) for mounting the conductive spring 17, the conductive spring 17 is mounted on the chip bracket 162 through the mounting hole 1627, and at the same time, the conductive spring 17 forms electrical contact with the electrical contact portion 163; in some embodiments, the mounting hole 1627 is configured as a mounting groove, the mounting groove is used to fix the conductive spring 17, the bottom end of the mounting groove is configured to be able to conduct electricity, and the conductive spring 17 forms electrical contact with the electrical contact portion 163 through the bottom end of the mounting groove; usually, the contact pin in the imaging device is conical, and when the conductive member 17 is configured as a conductive spring, the contact pin can enter the inner ring of the conductive spring to form electrical contact, and the contact between the contact pin and the conductive spring 17 is more stable.

[0052] [Beneficial Effects]

[0053] Compared with the prior art, the developing box provided by the utility model has the following beneficial effects:

[0054] First, the developer box 10 is provided with a conductive member 17 connected to the electrical contact portion 163 , and the conductive member 17 is constructed to be elastic and can produce elastic deformation, so that the developer box 10 can be applicable to different types of imaging devices, thereby expanding the application range of the developer box 10 .

[0055] Secondly, the conductive member 17 can produce elastic deformation, and / or the conductive member 17 has at least one inclined surface. This configuration allows the conductive member 17 to deform during the installation or removal of the developer box 10 to avoid interference, making the installation or removal process smoother.

[0056] Thirdly, an elastic conductive member 17 is provided in the developing box 10, and the conductive member 17 can be elastically deformed. When the developing box 10 provided in this way is installed in the imaging device, the conductive member 17 can form a stable electrical contact with the contact pin of the imaging device.

Claims

1. A developing cartridge, detachably mounted to an imaging device having a contact pin, comprising a chip component having a chip, a chip holder and a conductive member, wherein the conductive member is used to establish a communication connection between the chip and the imaging device, the chip is used to store parameter information of the developing cartridge, and is provided with an electrical contact portion for forming an electrical contact with the conductive member, and the chip holder is used to accommodate the chip; It is characterized in that The conductive member is configured as an elastic member, one end of the conductive member is used to be connected to the electrical contact portion, and the other end of the conductive member is used to be connected to the imaging device.

2. The developing cartridge according to claim 1, characterized in that: The developing box includes a developing roller, a developing shell, a driving head and an end cover. The developing shell is used to accommodate the developer. The developing roller is rotatably arranged in the developing shell for conveying the developer to the outside of the developing box. The driving head is exposed through the end cover and is used to receive a driving force from the imaging device to drive the developing roller to rotate. The chip holder is arranged on the developing shell or the end cover.

3. The developing cartridge according to claim 2, characterized in that: The developing box is also provided with a connecting piece for connecting the chip support and the end cover / developing housing, and the connecting piece is configured as a cantilever protruding from the end cover / developing housing / chip support.

4. The developing cartridge according to claim 2, wherein: The chip includes a substrate, a first protrusion and a second protrusion, the electrical contact portion is located on the substrate, the first protrusion and the second protrusion extend from the substrate in different directions, the protruding size of the first protrusion is different from the protruding size of the second protrusion, and the electrical contact portion is closer to one of the first protrusion and the second protrusion.

5. The developing cartridge according to claim 4, characterized in that: The developing housing comprises a first housing and a second housing, the first housing and the second housing are arranged in a vertical direction in the developing box, the direction intersecting the vertical direction is a front-to-back direction, the developing roller is located in front of the developing housing, and the developing box further comprises a second positioning member and a third positioning member respectively used to cooperate with the first protrusion and the second protrusion, the size of the second positioning member in the front-to-back direction is different from the size of the third positioning member in the front-to-back direction; The chip support comprises a cover plate and a mounting seat, wherein the cover plate is located above the mounting seat, one of the second positioning member and the third positioning member is formed by protruding upward from the mounting seat, and the other is formed by protruding downward from the cover plate.

6. The developing cartridge according to claim 5, characterized in that: The conductive member is configured as a conductive steel sheet, which includes a first connection portion for elastically electrically contacting a contact pin in an imaging device and a second connection portion for electrically contacting the electrical contact portion, at least a portion of the second connection portion being configured to protrude toward the electrical contact portion to form an arc surface.

7. The developing cartridge according to claim 6, wherein: At least one positioning groove is arranged on the cover plate, and the positioning groove enables the second connecting portion of the conductive member to be positioned in the chip bracket.

8. The developing cartridge according to claim 7, characterized in that: The conductive member is further provided with a third connection portion electrically connected to the first connection portion, and an intermediate portion is provided between the first connection portion and the third connection portion, and a recessed portion for allowing the contact pin to enter is provided on the intermediate portion.

9. The developing cartridge according to claim 8, characterized in that: The conductive member further includes a special-shaped portion disposed on the first connecting portion, wherein the special-shaped portion is configured to be deformed during the process of taking the developing cartridge out of the imaging device.

10. The developing cartridge according to claim 5, characterized in that: The conductive member is configured as a conductive spring, the second mounting portion is disposed on the cover plate, and the conductive spring is positioned by the cover plate.

11. The developing cartridge according to any one of claims 5 to 10, characterized in that: The chip holder also includes a chip mounting cavity located between the cover plate and the mounting seat. The chip holder is constructed as a polygon with multiple sides. The chip holder is provided with a first mounting portion on one side thereof for allowing the chip to enter and be mounted to the chip mounting cavity. The chip holder is provided with a second mounting portion on another side thereof for allowing the second connecting portion to enter the chip mounting cavity and be positioned in the positioning groove.

12. The developing cartridge according to any one of claims 5 to 10, characterized in that: The chip holder also includes a chip mounting cavity located between the cover plate and the mounting seat. The chip holder is constructed as a polygon with multiple sides. The chip holder is provided with a first mounting portion on the same side thereof for allowing the chip to enter and be mounted to the chip mounting cavity and a second mounting portion for allowing the second connecting portion to enter the chip mounting cavity and be positioned in the positioning groove.

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