CN220820463U

CN220820463U - Process cartridge

Info

Publication number: CN220820463U
Application number: CN202322233020.0U
Authority: CN
Inventors: 范金石
Original assignee: Zhuhai Dinghe Technology Co ltd
Current assignee: Zhuhai Dinghe Technology Co ltd
Priority date: 2023-08-18
Filing date: 2023-08-18
Publication date: 2024-04-19
Anticipated expiration: 2033-08-18

Abstract

A process cartridge for mounting to a main assembly of an electrophotographic image forming apparatus, the main assembly being provided with an electrical connector including a connection base formed with a socket and a conductive contact pin provided at a bottom of the socket; the processing box comprises a photosensitive drum and a chip, the chip is arranged on a chip seat of the processing box, and a limiting part is arranged at the side of the chip seat; when the processing box is installed on the main component, the chip seat is inserted into the inserting groove, and the limiting part is matched with the side wall of the connecting seat so as to limit the relative position of the connecting seat and the chip seat. The utility model can promote the stable and reliable electric connection between the chip and the electric connector.

Description

Process cartridge

Technical Field

The present utility model relates to the field of electrophotographic imaging apparatuses; and more particularly to a process cartridge with a chip.

Background

The process cartridge is usually detachably mounted in a main assembly of an electrophotographic image forming apparatus such as a laser printer, a copying machine, etc., and a chip storing information (e.g., model/specification, number of printable pages, etc.) related to the process cartridge may be provided on the process cartridge in order for the electrophotographic image forming apparatus to read/recognize the information related to the process cartridge. In order to ensure that the electrophotographic image forming apparatus can stably read/recognize information stored in the chip, it is required that a reliable electrical connection be formed between the chip and an electrical connector in the main assembly after the process cartridge is mounted to the main assembly.

Disclosure of utility model

The main object of the present utility model is to provide a process cartridge that facilitates the formation of a stable and reliable electrical connection between a chip and an electrical connector.

In order to achieve the above-described main object, the present utility model discloses a process cartridge for mounting to a main assembly of an electrophotographic image forming apparatus, the main assembly being provided with an electrical connector including a connection base formed with a socket and conductive contacts provided at the bottom of the socket; the processing box comprises a photosensitive drum and a chip, the chip is arranged on a chip seat of the processing box, and a limiting part is arranged at the side of the chip seat; when the processing box is installed on the main component, the chip seat is inserted into the inserting groove, and the limiting part is matched with the side wall of the connecting seat so as to limit the relative position of the connecting seat and the chip seat.

According to one embodiment of the present utility model, the side wall of the connection base includes two first side walls, and the two first side walls are oppositely disposed in a first direction parallel to the axial direction of the photosensitive drum; at least one side of the chip seat is provided with a limiting part in the first direction, a limiting groove is formed between the limiting part and the chip seat, and at least one of the two first side walls can be inserted into the limiting groove to limit the relative position of the connecting seat and the chip seat in the first direction. The limiting part can be a limiting rib plate arranged on one side of the chip seat.

Further, a plurality of positioning protrusions are arranged in the inserting grooves; when the process cartridge is mounted to the main assembly, the chip carrier is located between the plurality of positioning projections in a second direction perpendicular to the axial direction of the photosensitive drum, and defines a relative position of the connection carrier and the chip carrier in the second direction.

According to another embodiment of the present utility model, the side wall of the connecting seat includes two second side walls, the two second side walls being oppositely disposed in a second direction perpendicular to the axial direction of the photosensitive drum; the outer surfaces of the two second side walls are respectively provided with a limiting groove, and the limiting part comprises at least one protruding part which is used for being inserted into the limiting grooves on the second side walls so as to limit the relative positions of the connecting seat and the chip seat.

Further, the number of the protruding parts is multiple, and the protruding parts are respectively located at two opposite sides of the chip seat in the second direction and are respectively inserted into the limiting grooves on the two second side walls.

In the embodiment of the utility model, the chip seat is provided with the elastic cantilever which is abutted against the back surface of the chip, and the tail end of the elastic cantilever is provided with the stop part for preventing the chip from falling off the chip seat.

Further, in a second direction perpendicular to the axial direction of the photosensitive drum, the opposite sides of the chip holder are respectively provided with an abutting portion, and the chip is clamped by the abutting portion and the elastic cantilever in the thickness direction.

In an embodiment of the utility model, the process cartridge includes a developing unit and a photosensitive unit, the photosensitive unit includes a photosensitive drum and a driving force receiving portion connected to the photosensitive drum, and the chip holder and the restricting portion are both disposed at one end of the developing unit with respect to the driving force receiving portion.

Further, the developing unit is provided with a developing end cap with respect to one end of the driving force receiving portion, and the chip holder and the regulating portion are both provided on the developing end cap. Preferably, the chip carrier, the restricting portion, and the developing end cap have an integrally formed structure.

In the utility model, the side of the chip seat is provided with the limiting part, and when the processing box is installed on the main component, the limiting part is matched with the side wall of the connecting seat to limit the relative position of the connecting seat and the chip seat, thereby promoting the stable and reliable electric connection between the chip and the electric connector.

The objects, technical solutions and advantages of the present utility model will be more clearly described below, and the present utility model will be further described in detail with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic diagram of an electrical connector within a prior art main assembly;

fig. 2 is an overall configuration diagram of embodiment 1 of the process cartridge;

Fig. 3 is a structural view of a developing end cap portion in embodiment 1 of the process cartridge;

FIG. 4 is a diagram showing the fitting structure of the chip carrier and the electrical connector when the process cartridge of embodiment 1 is mounted to the main assembly;

Fig. 5 is a state diagram of the insertion of the chip carrier into the insertion groove when the process cartridge embodiment 1 is mounted to the main assembly;

Fig. 6 is a structural view of embodiment 2 of the process cartridge;

fig. 7 is a structural view of a developing end cap portion in embodiment 2 of the process cartridge;

Fig. 8 is a fitting structure diagram of the chip carrier and the electrical connector when the process cartridge embodiment 2 is mounted to the main assembly.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, it should be understood that the following examples and detailed description are presented for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

As shown in fig. 2, the process cartridge of the embodiment includes a developing unit 210 and a photosensitive unit 220. The photosensitive unit 220 is provided with a photosensitive drum 221 and a driving force receiving portion 222, the driving force receiving portion 222 being located at one longitudinal end of the process cartridge in a first direction Y parallel to the axial direction of the photosensitive drum 221; the driving force receiving portion 222 is connected to the photosensitive drum 221, and can receive a rotational driving force from a main assembly of the electrophotographic image forming apparatus to drive the photosensitive drum 221 to rotate. The developing unit 210 is provided with a developing roller (not visible in the drawing) for supplying a developer to the photosensitive drum 221 so that the electrostatic latent image on the photosensitive drum 221 can be developed.

Further, the process cartridge further includes a chip 240 provided on the chip carrier 230, and the position of the chip carrier 230 may be determined according to the position of the electrical connector in the main assembly, for example, may be provided at one end of the developing unit 210 with respect to the driving force receiving portion 222. In embodiment 1, as shown in fig. 2 and 3, the developing unit 210 is provided with a developing end cap 211 at one end thereof opposite to the driving force receiving portion 222, and the chip holder 230 may be provided on the developing end cap 211, for example, with an integrally formed structure with the developing end cap 211.

As shown in fig. 3, the die pad 230 is provided with an elastic cantilever 231 abutting against the back surface of the die 240, and the end of the elastic cantilever 231 is provided with a stopper 232 for preventing the die 240 from falling off the die pad 230. In the second direction X perpendicular to the axial direction of the photosensitive drum 221, the opposite sides of the chip holder 230 are respectively provided with an abutment portion 233, and the abutment portion 233 abuts against the front surface of the chip 240 provided with the electrical contact 241, i.e., the chip 240 is clamped by the abutment portion 233 and the elastic cantilever 231 in the thickness direction thereof, thereby realizing the fixed mounting of the chip 240 in the chip holder 230 and having the advantage of simple structure.

The developing unit 210 is further provided at one end thereof opposite to the driving force receiving portion 222 with a restricting portion 251 located beside the chip holder 230, and the restricting portion 251 may be also provided on the developing end cap 211 and have an integrally formed structure with the developing end cap 211. In embodiment 1, the restriction portion 251 is provided on at least one side of the chip carrier 230 (for example, the inner side of the chip carrier 230) in the first direction Y; the limiting portion 251 and the die pad 230 are disposed at intervals in the first direction Y, and a limiting groove 252 is formed therebetween. The limiting portion 251 may be a limiting rib plate, but is not limited thereto.

As shown in fig. 1, the electrical connector 100 of the main assembly includes a connection base 110 formed with a socket 111 and a conductive contact pin 120 disposed at the bottom of the socket 111, the connection base 110 being movably disposed in the main assembly and connected with an elastic member 130 in the main assembly. The side walls of the connecting base 110 include two first side walls 112, and the two first side walls 112 are disposed opposite to each other in a first direction Y parallel to the axial direction of the photosensitive drum.

As shown in fig. 4 and 5, when the process cartridge is mounted to the main assembly, the chip holder 230 is inserted into the insertion groove 111, and the electrical contact 241 of the front surface of the chip 240 is brought into contact with and electrically connected to the conductive contact pin 120, so that the electrophotographic image forming apparatus can read/recognize information of the chip 240. Further, the restriction part 251 is engaged with the first sidewall 112 of the connection holder 110 to define the relative positions of the connection holder 110 and the chip holder 230 when the process cartridge is mounted to the main assembly. Specifically, the first side wall 112 is inserted into the limiting groove 252 between the limiting portion 251 and the chip holder 230, so as to define the relative positions of the connecting seat 110 and the chip holder 230 in the first direction Y, thereby promoting a stable and reliable electrical connection between the chip 240 and the electrical connector 100.

Further, as shown in fig. 1, a plurality of positioning protrusions 115 are disposed in the plugging slot 111; when the process cartridge is mounted to the main assembly, the chip carrier 230 is positioned between the plurality of positioning projections 115 in a second direction X perpendicular to the axial direction of the photosensitive drum 221, and defines the relative positions of the connection carrier 110 and the chip carrier 230 in the second direction X, further improving the reliability of the electrical connection between the chip 240 and the electrical connector 100.

As a variation of embodiment 1, the chip holder 230 may be provided with the restriction portions 251 on opposite sides of the first direction Y, and the two first side walls 112 of the connection holder 110 are respectively inserted into the restriction grooves 252 on opposite sides of the chip holder 230 when the process cartridge is mounted to the main assembly.

Example 2

As shown in fig. 6 and 7, the side of the chip carrier 230 in embodiment 2 is provided with a boss 261 as an example of a restricting portion, and the boss 261 is provided on opposite sides of the chip carrier 230 in a second direction X perpendicular to the axial direction of the photosensitive drum 221, and is provided at a distance from the chip carrier 230. As shown in fig. 1, the side walls of the connecting seat 110 include two second side walls 113, the two second side walls 113 are oppositely arranged in the second direction X, and the two second side walls 113 are respectively provided with a limiting groove 114.

As shown in fig. 8, when the process cartridge is mounted to the main assembly, the two protrusions 261 are respectively inserted into the limit grooves 114 on the two second side walls 113 to define the relative positions of the connection base 110 and the chip base 230 in the first direction Y and the second direction X, thereby promoting the formation of a stable and reliable electrical connection between the chip 240 and the electrical connector 100.

Other descriptions of embodiment 2 can be found in embodiment 1, and will not be repeated here. As a variation of embodiment 2, a boss 261 as a restricting portion may be provided only on one side of the chip carrier 230, and the boss 261 may be inserted into the restricting groove 114 on one of the second side walls 113.

It should be noted that the different embodiments disclosed above may be cited, referred to, or combined with each other, and that the technical features/components of the different embodiments may be combined with and/or replaced with each other, unless contradictory or exclusive situations exist.

Although the utility model has been described above by way of examples, it should be understood that the above examples are illustrative only of the possible embodiments of the utility model and should not be construed as limiting the scope of the utility model, i.e. that substitutions or variations according to the utility model will be covered by the scope of the claims of the utility model.

Claims

1. A process cartridge for mounting to a main assembly of an electrophotographic image forming apparatus, the main assembly being provided with an electrical connector including a connection base formed with a socket and a conductive contact pin provided at a bottom of the socket; the processing box comprises a photosensitive drum and a chip, and the chip is arranged on a chip seat of the processing box; the method is characterized in that: a limiting part is arranged beside the chip seat; when the processing box is mounted on the main assembly, the chip seat is inserted into the inserting groove, and the limiting part is matched with the side wall of the connecting seat so as to limit the relative position of the connecting seat and the chip seat.

2. A process cartridge according to claim 1, wherein: the side walls comprise two first side walls which are oppositely arranged in a first direction parallel to the axial direction of the photosensitive drum; in the first direction, at least one side of the chip seat is provided with the limiting part, a limiting groove is formed between the limiting part and the chip seat, and at least one of the two first side walls can be inserted into the limiting groove to limit the relative position of the connecting seat and the chip seat in the first direction.

3. A process cartridge according to claim 2, wherein: the limiting part is a limiting rib plate arranged on one side of the chip seat.

4. A process cartridge according to claim 2, wherein: a plurality of positioning protrusions are arranged in the inserting grooves; the chip holder is located between the plurality of positioning projections in a second direction perpendicular to an axial direction of the photosensitive drum, and defines a relative position of the connection holder and the chip holder in the second direction when the process cartridge is mounted to the main assembly.

5. A process cartridge according to claim 1, wherein: the side walls comprise two second side walls which are oppositely arranged in a second direction perpendicular to the axial direction of the photosensitive drum; and limiting grooves are respectively formed in the outer surfaces of the two second side walls, and each limiting part comprises at least one protruding part, and the protruding parts are used for being inserted into the limiting grooves in the second side walls so as to limit the relative positions of the connecting seat and the chip seat.

6. A process cartridge according to claim 5, wherein: the number of the protruding parts is multiple, and the protruding parts are respectively located at two opposite sides of the chip seat in the second direction and are respectively inserted into the limiting grooves on the two second side walls.

7. A process cartridge according to any one of claims 1 to 6, wherein: the chip seat is provided with an elastic cantilever which is abutted to the back surface of the chip, and the tail end of the elastic cantilever is provided with a stop part which prevents the chip from falling off from the chip seat.

8. A process cartridge according to claim 7, wherein: in a second direction perpendicular to the axial direction of the photosensitive drum, two opposite sides of the chip holder are respectively provided with an abutting part, and the chip is clamped by the abutting parts and the elastic cantilever in the thickness direction of the chip.

9. A process cartridge according to any one of claims 1 to 6, wherein: the processing box comprises a developing unit and a photosensitive unit, wherein the photosensitive unit comprises a photosensitive drum and a driving force receiving part connected with the photosensitive drum, and the chip seat and the limiting part are both arranged at one end of the developing unit opposite to the driving force receiving part.

10. A process cartridge according to claim 9, wherein: the developing unit is provided with a developing end cover relative to one end of the driving force receiving part, and the chip seat and the limiting part are both arranged on the developing end cover.