CN218383676U - Shield and processing box - Google Patents

Abstract

The present application relates to a shield for a process cartridge, the shield for covering at least a portion of a photosensitive drum frame of the process cartridge, the shield comprising: the cover comprises a cover part, a first clamping end and a second clamping end, wherein the first clamping end and the second clamping end are connected to two sides of the cover part along a first direction, the first clamping end is used for clamping with a first matching part of the processing box, and the second clamping end is used for clamping with a second matching part of the processing box. In this application, the guard shield covers in the outside of sensitization drum to play the effect of protection sensitization drum, thereby avoid the sensitization drum to suffer external environment pollution or collide with wearing and tearing in the transportation. The first clamping end and the second clamping end are simple in structure and convenient to produce, and production cost of the shield is reduced. The first clamping end is clamped with the first matching part of the processing box, and the second clamping end is clamped with the second matching part of the processing box, so that the detachable connection of the shield and the processing box is realized through clamping, the mounting difficulty of the shield is simplified, and the assembly is convenient.

Description

Shield and processing box

Technical Field

The application relates to the technical field of electronic imaging equipment, in particular to a protective cover and a processing box.

Background

An electrophotographic image forming apparatus is an apparatus that forms an image on a recording material by an electrophotographic image forming process technique, such as: electrophotographic copiers, laser printers, electrophotographic printers, facsimile machines, word processors, and the like. The electronic imaging device includes a main body and a process cartridge detachably mounted in the main body.

As shown in fig. 1, the conventional process cartridge C includes: the powder cartridge comprises a powder cartridge frame 11, a developing frame 12, a photosensitive drum frame 13 and a protective cover 18, wherein carbon powder for developing is contained in the powder cartridge frame 11, a developing roller, a supply roller, a powder discharging blade and the like are assembled on the developing frame 12, the photosensitive drum 7, a charging device, a cleaning blade and the like are assembled on the photosensitive drum frame 13, the protective cover 18 is used for covering the photosensitive drum 7 to protect the photosensitive drum 7 and comprises a cover part covering the photosensitive drum 7 and two bent elastic connecting arms (18 b and 18 c), one end of each connecting arm (18 b and 18 c) is connected with the developing frame 12, and the other end of each connecting arm is connected with the cover part, so that the cover part can move between a position covering the photosensitive drum 7 and a position exposing the photosensitive drum 7.

In the prior art, the shield 18 has a complex structure, more parts and complex assembly steps, so that the production process is complex, the assembly is troublesome and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The application provides a shield and a processing box, wherein the shield is simple in structure and convenient to assemble.

The embodiment of the present application provides a shield for a process cartridge, the shield for covering at least a portion of a photosensitive drum frame of the process cartridge;

the shroud includes: the cover comprises a cover part, a first clamping end and a second clamping end, wherein the first clamping end and the second clamping end are connected to two sides of the cover part along a first direction, the first clamping end is used for clamping with a first matching part of the processing box, and the second clamping end is used for clamping with a second matching part of the processing box.

In one possible design, the first engaging end is provided with a first protrusion and/or a first groove for engaging with a first engaging portion of the process cartridge.

In one possible design, when the first click end is provided with the first projection, the first projection extends in a first direction toward the second click end.

In a possible design, the second engaging end is provided with a second protrusion and/or a second groove, and the second protrusion and/or the second groove are used for engaging with a second matching portion of the process cartridge.

In a possible design, the second engaging end is provided with a detaching portion, and the second protrusion and/or the second groove are/is provided in the detaching portion.

In one possible design, the detaching portion is made of an elastic material.

In a possible design, the cover part has a sector-shaped cross section in the second direction.

In one possible design, the first engaging end and the second engaging end are configured to engage with one of a powder hopper frame, a developing frame, or a photosensitive drum frame of the process cartridge.

An embodiment of the present application also provides a process cartridge detachably mountable to an image forming apparatus, the process cartridge including:

a powder hopper frame for accommodating a developer;

the developing frame is connected with the powder bin;

the photosensitive drum frame is connected with the developing frame and is provided with a photosensitive drum;

one of the powder bin frame, the developing frame and the photosensitive drum frame is provided with a first matching part and a second matching part, and the first matching part and the second matching part are respectively used for being clamped with the first clamping end and the second clamping end of the protective cover.

In a possible design, along the first direction, one end of the process cartridge is provided with a third groove and/or a third protrusion, the third groove and/or the third protrusion is the first mating portion, the other end of the process cartridge is provided with a fourth groove and/or a fourth protrusion, and the fourth groove and/or the fourth protrusion is the second mating portion.

In this application, the guard shield covers in the outside of sensitization drum to play the effect of protection sensitization drum, thereby avoid the sensitization drum to suffer external environment pollution or collide with wearing and tearing in the transportation. The first clamping end and the second clamping end are simple in structure and convenient to produce, and the production cost of the protective cover is reduced. The first clamping end is clamped with the first matching part of the processing box, and the second clamping end is clamped with the second matching part of the processing box, so that the detachable connection of the shield and the processing box is realized through clamping, the mounting difficulty of the shield is simplified, and the assembly is convenient.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is a schematic view showing a structure of a process cartridge according to the prior art;

FIG. 2 is a schematic structural view of a process cartridge and a shield provided in the present application in one embodiment;

FIG. 3 is an enlarged view of a portion of the area I in FIG. 2;

FIG. 4 is a schematic view of the structure of the process cartridge of FIG. 2;

FIG. 5 is an enlarged view of a portion of area II of FIG. 4;

FIG. 6 is a schematic view of the process cartridge of FIG. 2 from another perspective;

FIG. 7 is an enlarged view of a portion of area III of FIG. 6;

FIG. 8 is a schematic structural view of a shield provided herein in one embodiment;

FIG. 9 is a schematic view of the shroud of FIG. 8 from another perspective;

fig. 10 is a schematic structural view of the powder hopper frame and the developing frame in fig. 2;

fig. 11 is an exploded view of a portion of the structure of fig. 10.

Reference numerals:

(Prior Art)

C-a processing box;

7-a photosensitive drum;

11-powder bin frame;

12-a developing frame;

13-a photosensitive drum frame;

18-a shield;

18 b-a linker arm;

18 c-linker arm;

(this application)

D-a process cartridge;

21-powder bin frame;

22-a developing frame;

23-a photosensitive drum frame;

231-a first mating portion;

232-a second mating portion;

24-a shield;

241-a cover part;

242-first engaging end;

243-second engaging end;

244 a first projection;

245-a second projection;

246-a disassembly portion;

247-limit ribs;

25-a developing roller;

26-a powder outlet knife;

27-a connector;

28-photosensitive drum.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The embodiment of the present application provides a process cartridge D detachably mountable to an image forming apparatus. As shown in fig. 2 and 4, the process cartridge D includes: the developing device comprises a powder bin frame 21, a developing frame 22 and a photosensitive drum frame 23, wherein the powder bin frame 21 is used for containing developer, the developing frame 22 is connected with the powder bin frame 21, the photosensitive drum frame 23 is connected with the developing frame 22, and the photosensitive drum frame 23 is provided with a photosensitive drum 28.

In the present embodiment, as shown in fig. 2 and 4, when image formation is performed by mounting the process cartridge D in the image forming apparatus, since the photosensitive drum 28 needs to be in contact with the image forming medium, the photosensitive drum 28 needs to be partially exposed to the outside of the process cartridge D, thereby facilitating contact with the image forming medium after mounting to the image forming apparatus. Since the photosensitive drum 28 needs to be exposed to the outside of the process cartridge D, the photosensitive drum 28 is easily polluted by the external environment or abraded by collision during the transportation or storage of the process cartridge D, thereby affecting the use of the process cartridge D.

Further, the first direction X is defined as a direction in which the photosensitive drum 28 axially extends, the third direction Z is defined as a mounting direction of the process cartridge D and is perpendicular to the first direction X, and the second direction Y is defined perpendicular to the first direction X and the third direction Z. Meanwhile, in the following embodiments, the first direction X is a left-right direction of the process cartridge D, the second direction Y is an up-down direction of the process cartridge D, and the third direction Z is a front-rear direction of the process cartridge D for convenience of reading. Further, the description of the shield 24 with the first direction X, the second direction Y, and the third direction Z is understood to be the direction in which the shield 24 is mounted to the process cartridge D.

The application provides a shield for processing a cartridge D. As shown in fig. 2, 8 and 9, the shield 24 is for covering at least part of the photosensitive drum frame 23 of the process cartridge D, and the shield 24 includes: the cover 241, the first engaging end 242 and the second engaging end 243 are connected to two sides of the cover 241 along the first direction X, the first engaging end 242 is used for engaging with a first engaging portion of the process cartridge D, and the second engaging end 243 is used for engaging with a second engaging portion of the process cartridge D.

In the present embodiment, as shown in fig. 2 and 4, the protective cover 24 covers the outside of the photosensitive drum 28 to protect the photosensitive drum 28, so as to prevent the photosensitive drum 28 from being polluted by the external environment or being damaged by collision during transportation. As shown in fig. 8 and 9, the first engaging end 242 and the second engaging end 243 have a simple structure, which facilitates production and reduces the production cost of the shield 24. The first engaging end 242 engages with the first engaging portion of the process cartridge D, and the second engaging end 243 engages with the second engaging portion of the process cartridge D, so that the shield 24 and the process cartridge D can be detachably connected by engagement, thereby simplifying the difficulty of mounting the shield 24 and facilitating assembly.

In a specific embodiment, as shown in fig. 7 and 8, the first engaging end 242 is provided with a first protrusion 244 and/or a first groove, and the first protrusion 244 and/or the first groove are used for engaging with the first engaging portion of the process cartridge D.

In the present embodiment, as shown in fig. 7 and 8, when the first engaging end 242 is provided with the first protrusion 244, the first engaging portion of the process cartridge D is provided with the corresponding third groove 231, and the first protrusion 244 engages with the third groove 231; when the first engaging end 242 has a first groove, the first matching portion of the processing cartridge D has a corresponding third protrusion, and the first groove and the third protrusion are engaged, so that the first engaging end 242 can be firmly engaged with the first matching portion and is convenient for assembly.

In a specific embodiment, as shown in fig. 8, when the first engagement end 242 is provided with the first protrusion 244, the first protrusion 244 extends toward the second engagement end 243 along the first direction X.

In the present embodiment, as shown in fig. 8, the first protrusion 244 extends toward the second engaging end 243 along the first direction X, and the first protrusion 244 has a simple structure and is easy to produce, thereby reducing the difficulty in producing the shield 24. Meanwhile, the first protrusion 244 can be easily inserted into the third groove 231, thereby facilitating the installation of the shield 24.

In a specific embodiment, as shown in fig. 5 and 8, the second engaging end 243 is provided with a second protrusion 245 and/or a second groove, and the second protrusion 245 and/or the second groove are/is used for engaging with the second engaging portion of the process cartridge D.

In the present embodiment, as shown in fig. 5 and 8, when the second engaging end 243 is provided with the second protrusion 245, the second engaging portion of the process cartridge D is provided with the corresponding fourth groove 232, and the second protrusion 245 is engaged with the fourth groove 232; when the second engaging end 243 is provided with the second groove, the second engaging portion of the processing cartridge D is provided with the corresponding fourth protrusion, and the second groove and the fourth protrusion are engaged, so that the second engaging end 243 can be firmly engaged with the second engaging portion and is convenient for assembly.

In a specific embodiment, as shown in fig. 8 and 9, the second engaging end 243 is provided with a detaching portion 246, the second protrusion 245 and/or the second groove are/is provided on the detaching portion 246, and the detaching portion 246 is made of an elastic material.

In the present embodiment, since the detachment portion 246 has a certain elasticity, the distance between the first protrusion 244 and the second protrusion 245 may be increased by pulling the detachment portion 246 along the first direction X. Since the second protrusion 245 and/or the second groove are/is provided at the detaching portion 246, when the detaching portion 246 moves and deforms, the second protrusion 245 can move along with the detaching portion 246 to adjust the distance between the first protrusion 244 and the second protrusion 245, thereby improving the flexibility of the shield 24 when being mounted to the process cartridge D and facilitating the mounting.

Specifically, when the shield 24 is mounted, the first protrusion 244 may be engaged with the third groove 231, the detaching portion 246 may be pulled so that the distance between the second protrusion 245 and the first protrusion 244 is increased, and the second protrusion 245 may be engaged with the fourth groove 232, so that both ends of the shield 24 may be tightly engaged with the process cartridge D. When the shield 24 is to be removed, the shield 24 can be removed from the process cartridge D by simply pulling the removing portion 246 to disengage the second projection 245 from the fourth groove 232 and further disengaging the first projection 244 from the third groove 231.

In a specific embodiment, as shown in fig. 8 and 9, the cover 241 has a fan-shaped cross section along the second direction Y.

In the present embodiment, as shown in fig. 8 and 9, since the cover portion 241 has a fan-shaped cross section along the second direction Y, the cover portion 241 can be more favorably attached to and fitted to the surface of the photosensitive drum 28, and the protective effect of the shield 24 on the photosensitive drum 28 is more favorable.

In addition, as shown in fig. 8, a plurality of limiting ribs 247 are disposed on one side of the cover 241 facing the photosensitive drum 28, and the limiting ribs 247 can contact the photosensitive drum 28, so that the shield 24 and the photosensitive drum 28 are more tightly buckled, and the protection effect of the shield 24 on the photosensitive drum 28 is further improved.

In a specific embodiment, the first engaging end 242 and the second engaging end 243 are used to engage with one of the powder hopper frame 21, the developing frame 22, or the photosensitive drum frame 23 of the process cartridge D.

In the present embodiment, as shown in fig. 5 and 7, one of the powder hopper frame 21, the developing frame 22, and the photosensitive drum frame 23 is provided with a first engaging portion and a second engaging portion, which are respectively engaged with the first engaging end 242 and the second engaging end 243, so that the shield 24 is stably connected to the process cartridge D, and the photosensitive drum 28 exposed outside the process cartridge D is protected when the process cartridge D is transported or stored.

In a specific embodiment, as shown in fig. 6 and 7, one end of the process cartridge D is provided with a third groove 231 and/or a third protrusion along the first direction X, the third groove 231 and/or the third protrusion being a first fitting portion, as shown in fig. 4 and 5, the other end of the process cartridge D is provided with a fourth groove 232 and/or a fourth protrusion, the fourth groove 232 and/or the fourth protrusion being a second fitting portion.

In this embodiment, the third recess 231 and/or the third protrusion, the fourth recess 232 and/or the fourth protrusion at the two ends of the process cartridge D are simple in structure and easy to produce, thereby reducing the production cost of the process cartridge D.

Further, as shown in fig. 10 and 11, the developing frame 22 and the powder hopper frame 21 may be integrally formed, and the developing frame 22 is located on the front side of the powder hopper frame 21 in the third direction Z (mounting direction) of the process cartridge D, and the developing frame 22 and the powder hopper frame 21 together form an integral cartridge frame. At this time, the developing frame 22 and the powder bin frame 21 do not need to be assembled, the structure is simpler, the problem of sealing between the developing frame 22 and the powder bin frame 21 does not need to be considered, the production process is greatly simplified, and the production efficiency is improved.

Specifically, the developing frame 22 is further provided with a rotatable developing roller 25 (such as a magnet roller), a supply roller (not shown in the figure), a powder discharge blade 26, and a coupling member 27, wherein the developing roller 25 (such as a magnet roller) and the supply roller are rotatably supported on the developing frame 22, and the supply roller is capable of supplying the developer in the powder hopper frame 21 to the developing roller 25. The powder discharging blade 26 is fixedly installed on the developing frame 22, and the powder discharging blade 26 is in contact with the outer surface of the developing roller 25 in the first direction X for adjusting the thickness of the developer on the surface of the developing roller 25. In the third direction Z (mounting direction) of the process cartridge D, the drum frame 23 may be located on the front side of the developing frame 22 and the powder hopper frame 21, and the drum frame 23 and the developing frame 22 may be relatively rotatably connected by a connecting member 27.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A shield for a process cartridge, characterized in that the shield (24) is for covering at least a part of a photosensitive drum frame (23) of the process cartridge;

the shield (24) comprises: the cover comprises a cover part (241), a first clamping end (242) and a second clamping end (243), wherein the first clamping end (242) and the second clamping end (243) are connected to two sides of the cover part (241) along a first direction (X), the first clamping end (242) is used for clamping with a first matching part of the processing box, and the second clamping end (243) is used for clamping with a second matching part of the processing box.

2. A shield according to claim 1, wherein the first catch end (242) is provided with a first projection (244) and/or a first groove, the first projection (244) and/or the first groove being for catching with a first mating portion of the process cartridge.

3. A shield according to claim 2, wherein when the first catch end (242) is provided with the first projection (244), the first projection (244) extends in a first direction (X) towards the second catch end (243).

4. A shield according to claim 1, wherein the second click end (243) is provided with a second projection (245) and/or a second groove for clicking with a second fitting portion of the process cartridge (245).

5. A shield according to claim 4, wherein the second catch end (243) is provided with a detachment portion (246), the second protrusion (245) and/or the second groove being provided at the detachment portion (246).

6. A shield according to claim 5, characterised in that the removal portion (246) is of resilient material.

7. A shield according to any one of claims 1 to 6, characterized in that the cross section of the cover portion (241) in the second direction (Y) is sector-shaped.

8. The cover according to any one of claims 1 to 6, wherein the first click end (242) and the second click end (243) are for clicking with one of a powder hopper frame (21), a developing frame (22) or a photosensitive drum frame (23) of the process cartridge.

9. A process cartridge detachably mountable to an image forming apparatus, comprising:

a powder hopper frame (21) for accommodating a developer;

a developing frame (22), wherein the developing frame (22) is connected with the powder bin frame (21);

the photosensitive drum frame (23), the photosensitive drum frame (23) is connected with the developing frame (22), and the photosensitive drum frame (23) is provided with a photosensitive drum (28);

wherein one of the powder hopper frame (21), the developing frame (22), and the photosensitive drum frame (23) is provided with a first engaging portion and a second engaging portion for engaging with the first engaging end (242) and the second engaging end (243) of the shroud (24) according to any one of claims 1 to 8, respectively.

10. A process cartridge according to claim 9, wherein in said first direction (X), one end of said process cartridge is provided with a third recess (231) and/or a third projection, said third recess (231) and/or said third projection being said first fitting portion, the other end of said process cartridge is provided with a fourth recess (232) and/or a fourth projection, said fourth recess (232) and/or said fourth projection being said second fitting portion.

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