Processing box

Abstract

The utility model provides a process cartridge detachably mounted to an imaging device, the process cartridge comprises a developing unit, and the developing unit comprises a developing shell for storing a developing agent and a developing roller rotatably arranged in the developing shell; the second driving assembly is used for receiving driving force from the imaging equipment, the driving force is at least used for driving the developing roller to rotate, the protecting cover is used for supporting the second driving assembly and is fixedly arranged relative to the developing shell, a notch is formed in the end cover, and the end cover is arranged in the rotating direction of the second driving assembly. One part of the protecting cover is exposed outside the processing box through the notch; a limiting piece is arranged on the end cover, a limited piece is arranged on the protecting cover, the limiting piece is used for guiding the limited piece, and the protecting cover is supported by the end cover through mutual matching between the limiting piece and the limited piece; according to the processing box, in the assembling process, the second driving assembly can be installed from the notch along with the protecting cover, and the assembling difficulty of the processing box is reduced.

Description

Technical Field

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

[0002] In an electronic photographic imaging device such as a laser printer or a copier, a processing box that can be installed in a detachable manner is usually provided. The processing box includes a developing unit and a photosensitive unit. The photosensitive unit includes a photosensitive housing and a photosensitive drum rotatably disposed in the photosensitive housing. The developing unit includes a developing housing for accommodating a developer and a developing roller rotatably disposed in the developing housing. When the imaging device is imaging, the developing roller transports the developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum.

[0003] The processing box also includes a driving component and an end cover. The driving component is used to receive driving force from the imaging device. The driving component includes a first driving component and a second driving component. The driving force received by the first driving component is used to drive the photosensitive drum to rotate, and the driving force received by the second driving component is at least used to drive the developing roller to rotate. Along the extension direction of the developing roller, the end cover is located at one end of the processing box, and at least two through holes are provided on the end cover. The first driving component and the second driving component need to be exposed to the outside of the processing box through the corresponding through holes respectively, so as to receive the driving force. When assembling the processing box, the first driving component and the second driving component must be aligned with the matching through holes at the same time, otherwise the processing box cannot be installed correctly. Such a setting makes it more difficult to assemble the processing box. Utility Model Content

[0004] The processing box provided by the utility model can solve at least one of the above technical problems. The specific solution is as follows:

[0005] A processing box is detachably mounted to an imaging device, wherein the processing box includes a developing unit, the developing unit includes a developing shell for storing a developer and a developing roller rotatably arranged in the developing shell, the developing roller is used to transport the developer to the outside of the developing unit, and the developing roller rotates around a rotation axis parallel to the longitudinal direction of the processing box.

[0006] The processing box also includes a second drive assembly, a protective cover and an end cover. The second drive assembly is used to receive a driving force from the imaging device, and the driving force is at least used to drive the developing roller to rotate. The protective cover is used to support the second drive assembly. The protective cover is fixed relative to the developing shell, and a notch is provided on the end cover. Along the rotation direction of the second drive assembly, a part of the protective cover is exposed to the outside of the processing box through the notch.

[0007] The end cover is provided with a limiting member, and the protective cover is provided with a restricted member. The limiting member is used to guide the restricted member. Through the mutual cooperation between the limiting member and the restricted member, the protective cover is supported by the end cover.

[0008] The limiting member is configured as a protrusion, and the limited member is configured as an arc-shaped groove; the limiting member is configured as an arc-shaped groove, and the limited member is configured as a protrusion.

[0009] The angle of the arc groove is greater than 90°, and the protrusion is arranged in an arc shape along the rotation direction of the second driving assembly.

[0010] With the processing box arranged in this way, during the assembly process, the second driving assembly can be installed from the gap along with the protective cover, thereby reducing the difficulty of assembling the processing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1A and Figure 1B It is a three-dimensional diagram of the processing box involved in the utility model.

[0012] Figure 2 It is a stereoscopic diagram of the end cover of the processing box involved in the utility model being connected with the photosensitive housing.

[0013] Figure 3 It is a stereoscopic diagram of a protective cover, a transfer assembly and a bracket of a processing box involved in the utility model.

[0014] Figure 4 It is a plan view when observing from the driving end to the non-driving end of the processing box involved in the utility model. DETAILED DESCRIPTION

[0015] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0016] The processing box 100 can be installed to the imaging device in a detachable manner. As shown in Figure 1, the processing box 100 includes a developing unit 10 and a photosensitive unit 20 that are combined with each other. The photosensitive unit 20 includes a photosensitive housing 21 and a photosensitive drum 22 rotatably arranged in the photosensitive housing 21, and the photosensitive drum 22 rotates around a rotation axis L1. The developing unit 10 includes a developing housing 11 for storing a developer and a developing roller 12 rotatably arranged in the developing housing 11, and the developing roller 12 rotates around a rotation axis L2. The extension direction of the rotation axis L2 is the longitudinal direction of the processing box 100, and the rotation axis L1 and the rotation axis L2 are parallel to each other. When the imaging device is imaging, the developing roller 12 in the processing box 100 transports the developer stored in the developing housing 11 to the photosensitive drum 22, so that the electrostatic latent image on the photosensitive drum 22 is developed.

[0017] The processing box 100 is provided with an action member 60. When the imaging device is not performing imaging, the action member 60 is used to receive the separation force applied by the imaging device, so that at least one of the developing unit 10 and the photosensitive unit 20 moves, thereby preventing the developing roller 12 and the photosensitive drum 22 from being in contact all the time and damaging the surfaces of the developing roller 12 and the photosensitive drum 22. The movement of the developing unit 10 is used as an example for explanation below.

[0018] The processing box 100 also includes a first driving component 30 and a second driving component 40. The first driving component 30 and the second driving component 40 are both used to receive driving force from the outside of the processing box 100 (such as: imaging device). The first driving component 30 transmits the received driving force to the photosensitive drum 22 to drive the photosensitive drum 22 to rotate around the rotation axis L1; the second driving component 40 transmits the received driving force at least to the developing roller 12. Under the action of the driving force, the developing roller 12 can rotate around the rotation axis L2; ​​along the longitudinal direction of the processing box 100, the first driving component 30 and the second driving component 40 are arranged at one end of the processing box 100, and the end where the first driving component 30 and the second driving component 40 are arranged is the driving end, and the other end opposite to the driving end is the non-driving end.

[0019] like Figure 1A , Figure 1B and Figure 2 As shown, the processing box 100 is provided with an end cover 50 at the driving end, and the end cover 50 can be formed integrally with the developing housing 11, or the end cover 50 can be formed integrally with the photosensitive housing 21, or the end cover 50, the developing housing 11, and the photosensitive housing 21 are formed separately; the first driving component 30 is supported by the end cover 50, and a through hole 51 is provided on the end cover 50. The first driving component 30 includes a first receiving end 31 for receiving a driving force, and along the longitudinal direction, the first receiving end 31 is exposed to the outside of the processing box 100 through the through hole 51, so as to receive the driving force; during the separation process of the developing unit 10 and the photosensitive unit 20, the first driving component 30 can be stably supported by the end cover 50 to avoid errors in the transmission process of the driving force.

[0020] like Figure 3 As shown, the processing box 100 is also provided with a protective cover 70, a transmission assembly 80 and a bracket 90 at the driving end. The protective cover 70 and the bracket 90 are both fixedly arranged relative to the developing shell 11. The protective cover 70 includes a main body 71 and a supporting portion 72. The supporting portion 72 extends from the main body 71 toward the driving end. The supporting portion 72 is provided with an opening 73 on a side close to the driving end. The second driving assembly 40 is supported by the supporting portion 72 / protective cover 70. At least a part of the main body 71 covers the transmission assembly 80. The driving force received by the second driving assembly 40 is transmitted to at least the developing roller 12 through the transmission assembly 80. The bracket 90 is used to support the transmission assembly 80. The end cover 50, the protective cover 70 and the bracket 90 are arranged in sequence along the direction from the driving end to the non-driving end.

[0021] The second driving component 40 includes a second receiving end 41 for receiving driving force and an intermediate piece 42. The second receiving end 41 and the intermediate piece 42 are combined with each other along the longitudinal direction. Along the longitudinal direction, the second receiving end 41 is exposed to the outside of the protective cover 70 through the opening 73 for receiving driving force. The intermediate piece 42 is used to transmit the driving force to the transmission component 80.

[0022] like Figure 3 and Figure 4 As shown, the end cover 50 is also provided with a notch 52, and a portion of the protective cover 70 is exposed through the notch 52 along the circumferential direction of the support portion 72, or in other words, along the rotation direction of the second drive assembly 40; a restricted member 75 is also provided on the protective cover 70, and through the cooperation between the restricted member 75 and the end cover 50, the developing unit 10 can move relative to the photosensitive unit 20, and the end cover 50 is also provided with a restricting member 53 for cooperating with the restricted member 75, and the restricting member 53 is used to allow the restricted member 75 to move therein. During the separation process of the developing unit 10 and the photosensitive unit 20, the developing unit 10 moves relative to the photosensitive unit 20, and the developing roller 12 moves relative to the photosensitive drum 22. During the movement process, the restricted member 75 is guided by the restricting member 53, so that the movement trajectory of the developing unit 10 is more stable. During the movement process, along the rotation direction of the second drive assembly 40, the movement range of the restricted member 75 is limited by the restricting member 53, and the second receiving end 41 can always keep in contact with the imaging device, ensuring that the second receiving end 41 can stably receive the driving force.

[0023] In some embodiments, the restricted member 75 is configured as a protrusion, and the protrusion is extended from the main body 71 toward the driving end; the restricted member 53 is configured as an arc-shaped groove, and the angle α of the arc-shaped groove is greater than 90°.

[0024] In some embodiments, the restricted member 75 and the restricting member 53 may be interchangeably arranged, that is, the restricting member 53 is arranged as a protrusion, and the restricted member 75 is arranged as an arc-shaped groove.

[0025] In some embodiments, the restricted member 75, the second driving assembly 40 and the supporting portion 72 are coaxially arranged. After the processing box 100 is assembled, the restricted member 53 is also coaxially arranged with the supporting portion 72, so that the movement of the second driving assembly 40 can be more stable.

[0026] In some embodiments, along the rotation direction of the second driving assembly 40, the restricted member 75 is also set to be arc-shaped, and the arc length of the restricted member 75 is slightly smaller than the arc length of the limiting member 53. This can reduce the movement amplitude of the restricted member 75 and reduce the impact of the movement of the developing unit 10 on the second driving assembly 40.

[0027] In some embodiments, the side wall forming the notch 52 has a first surface 521, a second surface 522 and a third surface 523, the first surface 521 and the second surface 522 are connected to each other, the second surface 522 and the third surface 523 are connected to each other, along the rotation direction of the second driving assembly 40, the second surface 522 is located between the first surface 521 and the third surface 523, at least a portion of the second surface 522 overlaps with the limiting member 53, and the second surface 522 is configured to be arc-shaped, so as to avoid the second driving assembly 40 from colliding with the end cover 50 when the developing unit 10 rotates.

[0028] In some embodiments, the support portion 72 can be in contact with the second surface 522 , so that the protective cover 70 is supported by the end cap 50 more stably.

[0029] [Beneficial Effects]

[0030] Compared with the prior art, the processing box 100 provided by the utility model sets a through hole on the end cover 50 into a notch 52. Along the rotation direction of the second driving assembly 40, the second driving assembly 40 is exposed to the outside of the processing box 100 through the notch 52 and can receive the driving force. The end cover 50 is provided with a limiting member 53, and the protective cover 70 is provided with a restricted member 75. Through the mutual cooperation between the limiting member 53 and the restricted member 75, the second driving assembly 40 is indirectly supported by the end cover 50. Such a setting has the following beneficial effects:

[0031] First, during assembly, the second drive assembly 40 is supported by the protective cover 70, and a portion of the protective cover 70 is exposed through the notch 52 along the rotation direction of the second drive assembly 40. When assembling the processing box 100, it is only necessary to align the first drive assembly 30 with the through hole 51, and the second drive assembly 40 can be installed from the notch 52 along with the protective cover 70, thereby reducing the difficulty of assembling the processing box 100.

[0032] Secondly, the notch 52 is provided to reduce the area of ​​the end cover 50, thereby reducing the manufacturing cost of the processing box 100. At the same time, after the area of ​​the end cover 50 is reduced, the design freedom of the processing box 100 is increased, and the space of the processing box 100 can be better utilized.

Claims

1. A process cartridge, detachably mounted to an image forming apparatus, the process cartridge comprising a developing unit, the developing unit comprising a developing housing for storing a developer and a developing roller rotatably disposed in the developing housing, the developing roller being used to transport the developer to the outside of the developing unit, the developing roller rotating about a rotation axis parallel to a longitudinal direction of the process cartridge; The processing box also includes a second driving assembly, a protective cover and an end cover, the second driving assembly is used to receive a driving force from the imaging device, and the driving force is at least used to drive the developing roller to rotate, the protective cover is used to support the second driving assembly, the protective cover is fixedly arranged relative to the developing housing, and a notch is arranged on the end cover, and along the rotation direction of the second driving assembly, a part of the protective cover is exposed to the outside of the processing box through the notch; It is characterized in that The end cover is provided with a limiting member, and the protective cover is provided with a restricted member. The limiting member is used to guide the restricted member. Through the mutual cooperation between the limiting member and the restricted member, the protective cover is supported by the end cover.

2. The process cartridge according to claim 1, wherein: The limiting member is configured as a protrusion, and the limited member is configured as an arc-shaped groove.

3. The process cartridge according to claim 1, wherein: The limiting member is configured as an arc-shaped groove, and the limited member is configured as a protrusion.

4. The process cartridge according to claim 2 or 3, wherein: The angle of the arc groove is greater than 90°.

5. The process cartridge according to claim 4, wherein: Along the rotation direction of the second driving assembly, the protrusion is arranged in an arc shape.

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