CN105511246B

CN105511246B - Processing box

Info

Publication number: CN105511246B
Application number: CN201610041399.7A
Authority: CN
Inventors: 杨晓锋; 李争光
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2016-01-21
Filing date: 2016-01-21
Publication date: 2022-12-09
Anticipated expiration: 2036-01-21
Also published as: CN105511246A

Abstract

The invention relates to a processing box, which belongs to the technical field of laser printing and comprises a pushing and pressing assembly, a control unit, a box body and a photosensitive drum which is rotatably supported between two end walls of the box body. The photosensitive drum comprises a drum barrel and a rotating force transmission assembly arranged at one axial end of the drum barrel, wherein the rotating force transmission assembly comprises a rotating force transmission part, and the rotating force transmission part comprises a guide rod and a rotating force receiving part positioned at one axial end of the guide rod. The biasing assembly includes a biasing member for applying a biasing force to the host drive shaft. The control unit is used for controlling the pushing and pressing piece to reciprocate along the axial direction of the guide rod. Because of the pushing component and the control unit, the driving shaft is pushed away in the direction away from the rotating force receiving part by the pushing rod in the decoupling process, so that the smoothness of decoupling in the process of taking the processing box out of the main machine is improved.

Description

Processing box

Technical Field

The present invention relates to a process cartridge for a laser printer.

Background

A laser printer is an apparatus for forming an image on a printing medium such as paper using an electrophotographic principle, and is generally composed of a main body and a process cartridge detachably mounted in the main body; the process cartridge has a cartridge body, a photosensitive drum for forming an electrostatic latent image, and a developing roller for supplying a developer to the photosensitive drum to develop the electrostatic latent image, the photosensitive drum and the developing roller being rotatably supported between both end walls of the cartridge body. The photosensitive drum has a drum and a rotational force transmitting assembly mounted on one axial end of the drum, and the drum is generally composed of an aluminum pipe and a photosensitive material layer coated outside the aluminum pipe. When the processing box is installed in the main machine, the rotating force transmission assembly is convenient to be firmly connected with the driving shaft in the main machine, and the rotating force of the driving shaft is transmitted to the drum barrel and other rotating parts, so that the normal work of the photosensitive drum and other rotating parts is ensured; after the carbon powder in the processing box is used up, the processing box needs to be taken out from the main machine so as to replace the processing box, and in the process of taking out the processing box, the rotating force transmission assembly is convenient to be separated from the connection with the driving shaft under the action of external force.

Chinese patent publication No. CN102067042A discloses a process cartridge, in which a rotational force transmitting member is a coupling having a ball-and-socket type universal joint. In the process of loading and unloading the processing box into and from the main machine, due to the action of the ball type universal joint, an included angle or collinearity can be generated between the axis of the coupler and the axis of the photosensitive drum, so that the rotating force transmission assembly and the driving shaft can be conveniently connected and disconnected; however, such ball and ball joints are prone to unwanted separation, particularly during transport, which is more likely to cause loss of the transfer function of the coupling.

As an improvement of the technical solution disclosed in CN102067042A, the present applicant disclosed a process cartridge in chinese patent application having publication No. CN103376696A, which was published as 10/30.2013, and the present applicant has a torque transmission device 01, i.e., a rotational force transmission assembly, as shown in fig. 1, wherein the torque transmission device 01 is composed of a rotational force transmission member 011, an axial stopper 012, a drum gear 013, and a spring 014, the drum gear 013 is formed with an accommodating chamber 0131 having an opening at one axial end of the drum gear 013, and the other axial end of the drum gear 013 is formed with a guide hole 0133 communicating with the accommodating chamber 0131. When the process cartridge is mounted to the printer main body, the rotational force applying portion of the drive shaft 02 provided on the main body will be coupled with the rotational force receiving portion of the rotational force transmitting member 011.

As shown in fig. 2, the rotational force applying portion is two cylindrical rotational force applying arms 021 formed on the end portion of the drive shaft 02 in the axial direction perpendicular to the drive shaft 02, the two rotational force applying arms 021 being arranged symmetrically about the axial center of the drive shaft 02; the rotating force transmission piece 011 is composed of a guide rod 0112 and a rotating force receiving part 0111 positioned at one axial end of the guide rod 0112, and the transverse size of the rotating force receiving part 0111 along the guide rod 0112 is larger than that of the guide rod 0112; a pair of output arms 01121 extending outwards along the transverse direction are arranged on the transverse outer wall of the guide rod 0112; on the axial back to the outer end wall of guide arm 0112 of revolving force receiving part 0111 along guide arm 0112, in the position at outer end wall along the horizontal skew outer end wall center of guide arm 0112, be equipped with a pair of revolving force receiving arm 01111 of protruding formation outwards along the guide arm 0112 axial, revolving force receiving part 0111 is located the outer end wall between two revolving force receiving arms 01111 and forms a sphere form shrinkage pool 01112 along guide arm 0112's axial indent. The drum gear 013 is substantially cylindrical, and a pair of input arms 0132 extending toward the radial center thereof are provided on the inner wall of the housing chamber 0131 parallel to the axial direction of the drum gear 013, and the output arm 01121 is in abutting contact with the input arms 0132 at the position of the input arms 0132 in the circumferential direction of the drum gear 013. The other axial end of the guide rod 0112 sequentially passes through a through hole formed on the axial limiting piece 012, and the spring 014 and the accommodating cavity 0131 reach a guide hole 0133 in clearance fit with the spring 014 and the accommodating cavity 0131; the axial stopper 012 cooperates with the open end of the accommodating chamber 0131 to constitute a limit where the rotating force receiving portion 0111 is away from the drum gear 013. The one end of spring 014 supports and leans on the one side of keeping away from revolving force receiving part 0111 in output arm 01121, and the other end supports and leans on holding chamber 0131's bottom inboard.

In order to solve the problem that the spherical universal joint for transmitting the rotational force is easily separated from the drum gear in the technical solution disclosed in CN102067042A, CN103376696A provides a torque transmission device of a process cartridge, in which an output arm 01121 formed on a guide rod 0112 is limited in an accommodating cavity 0131 by an axial limiting piece 012, so that the rotational force transmission piece 011 is also fixed on the drum gear 013. This configuration avoids the risk of the rotational force transmitting member 011 separating from the drum gear 013, thereby ensuring good reliability and stability of the entire torque transmission device in transmitting the rotational force.

However, the process cartridge having the torque transmission device has a problem that it cannot be smoothly taken out from the main body in an actual use process, i.e., a "stuck" phenomenon.

In order to eliminate the "stuck" phenomenon, the design can be solved from two aspects, on one hand, the host is improved, namely, the drive shaft of the host is designed as follows: when the free end is pressed by the pushing force along the axial direction, the free end can be displaced along the axial direction towards the direction far away from the processing box; on the other hand, the process cartridge is improved as follows according to the present invention.

Disclosure of Invention

The invention aims to provide a processing box which improves the smoothness of decoupling in the process of taking out from the improved main machine.

In order to achieve the above object, the present invention provides a process cartridge including a pressing member, a control unit, a cartridge body, and a photosensitive drum rotatably supported between both end walls of the cartridge body. The photosensitive drum comprises a drum barrel and a rotating force transmission assembly arranged at one axial end of the drum barrel, the rotating force transmission assembly comprises a rotating force transmission piece, and the rotating force transmission piece comprises a guide rod and a rotating force receiving part arranged at one axial end of the guide rod. The biasing assembly includes a biasing member for applying a biasing force to the host drive shaft. The control unit is used for controlling the pushing and pressing piece to reciprocate along the axial direction of the guide rod.

According to the scheme, the control unit controls the pushing rod to axially reciprocate along the guide rod and applies pushing force to the driving shaft of the main machine, so that the driving shaft is forced to move in the direction away from the rotating force receiving part along the axial direction of the driving shaft, the driving shaft is conveniently disconnected from the rotating force receiving part, and the smoothness of taking down the processing box from the main machine is improved.

One particular solution is that the rotation force transmitter is provided with a guide hole arranged axially along its guide rod, which guide hole penetrates the rotation force transmitter. The guide hole is in clearance fit with the pushing and pressing piece. The guide hole guides the pushing and pressing piece to move along the axial direction of the pushing and pressing piece, and the pushing and pressing piece is convenient to push away from a driving shaft of a main machine.

More specifically, the control unit comprises a push rod assembly and a first elastic piece, wherein the push rod assembly comprises a push rod. The push rod can reciprocate between the separation position and the connection position along the direction parallel to the end face of the box body, and the first elastic piece and the push rod drive the push-pressing piece to reciprocate along the axial direction of the guide rod along with the reciprocating movement of the push rod between the separation position and the connection position. Push-pull force can be manually applied to the push rod assembly to drive the push rod to reciprocate between the disengagement position and the connection position, and further drive the pushing and pressing piece to axially reciprocate along the guide rod, so that the driving shaft is pushed away.

In a further embodiment, the pushing assembly further comprises a slider. The push rod is arranged at one end of the box body far away from the rotating force receiving part. Be equipped with the slide on the push rod, along push rod reciprocating motion's direction, the slide includes first section and the second section of being detained of detaining, and the second is detained and is detained the interval in the guide arm axial between section and revolving force receiving portion and be greater than first section of detaining and revolving force receiving portion at guide arm axial ascending interval. The restoring force of the first elastic piece forces the sliding block to be pressed on the sliding way. When the end of the push rod in the reciprocating direction is subjected to a force from the disengaging position to the connecting position, the slide block slides from the first retention section to the second retention section. Along with the sliding of the sliding block between the first retention section and the second retention section, the resultant force of the first elastic piece and the sliding block to the pushing piece drives the pushing piece to axially reciprocate along the guide rod.

Another more specific proposal is that the pushing assembly also comprises a connecting piece and a sliding block, and the sliding block is an annular body structure. The annular body structure is sleeved outside the guide rod and is in clearance fit with the guide rod. The connecting piece is arranged along the radial direction of the guide rod and is fixedly connected with the pushing piece; the guide rod is provided with a sliding groove matched with the connecting piece, the sliding groove is axially arranged along the guide rod, and the sliding groove radially penetrates through the guide hole and the outer side wall of the guide rod along the guide rod. The connecting piece is fixedly connected with the sliding block, or the restoring force of the first elastic piece forces the connecting piece to abut against the end face of the sliding block far away from the drum barrel, so that the acting force of the push rod is transmitted to the pushing piece. The push rod assembly is arranged at one end, close to the rotating force receiving part, of the box body, and further comprises an ejector rod and a transmission gear, and the axial direction of a rotating shaft of the transmission gear is orthogonal to the reciprocating direction of the push rod. The push rod can reciprocate between a jacking position and a releasing position along the direction parallel to the reciprocating movement of the push rod, a first rack meshed with the transmission gear is arranged on the push rod, a second rack meshed with the transmission gear is arranged on the push rod, the first rack and the second rack are arranged in parallel, and the transmission gear is positioned between the first rack and the second rack; when the ejector rod is positioned at the jacking position, the push rod is positioned at the connecting position; when the ejector rod is located at the releasing position, the push rod is located at the disengaging position. The first elastic piece and the push rod drive the sliding block to reciprocate along the axial direction of the guide rod along with the reciprocating movement of the push rod between the jacking position and the releasing position.

The pushing assembly further comprises a connecting piece and a sliding block, wherein the sliding block is of an annular structure, and the annular structure is sleeved outside the guide rod and is in clearance fit with the guide rod. The connecting piece is arranged along the radial direction of the vertical guide rod and is fixedly connected with the pushing piece. The guide rod is provided with a sliding groove matched with the connecting piece, the sliding groove is arranged along the axial direction of the guide rod, and the sliding groove penetrates through the guide hole and the outer side wall of the guide rod along the radial direction of the guide rod. The connecting piece is fixedly connected with the sliding block, or the restoring force of the first elastic piece forces the connecting piece to abut against the end face of the sliding block close to the drum barrel, so that the acting force of the push rod is transmitted to the pushing and pressing piece. The push rod assembly is arranged at one end, close to the rotating force receiving part, of the box body, and further comprises a lever, and the axial direction of a rotating support shaft of the lever is orthogonal to the axial direction of the guide rod. The push rod is provided with a guide surface, the distance between the guide surface and the rotating force receiving part in the axial direction of the guide rod is gradually increased along the direction from the disengaging position to the coupling position, and the receiving arm of the lever is provided with a guided part which slides along the guide surface. The end part of the action arm of the lever and the resultant force of the first elastic part to the sliding block drive the sliding block to reciprocate along the axial direction of the guide rod along with the reciprocating movement of the push rod between the disengaging position and the connecting position.

The preferable scheme is that the guide holes and the guide rods are coaxially arranged, and the end surface of the pushing and pressing part far away from the drum barrel is a convex smooth arc-shaped surface.

In another embodiment, the pushing assembly further comprises a connecting member and a sliding block. The control unit comprises a first elastic piece and a push rod assembly, and the push rod assembly comprises a push rod. The push rod assembly is arranged at one end of the box body close to the rotating force receiving part. The push rod can move reciprocally between a disengaged position and a coupled position in a direction parallel to the end face of the cartridge body. The connecting piece is arranged beside the guide rod, and the connecting piece is far away from the end part of the drum and extends along the direction close to the axis of the guide rod to form a pushing piece. The sliding block is of an annular structure, the annular structure is sleeved outside the guide rod and is in clearance fit with the guide rod, and the end part, far away from the pushing and pressing piece, of the connecting piece is fixedly connected with the annular structure. The first elastic piece and the push rod drive the sliding block to reciprocate along the axial direction of the guide rod by the resultant force of the first elastic piece and the push rod to the sliding block along with the reciprocating movement of the push rod between the separation position and the connection position. Push-pull force can be manually applied to the push rod assembly to drive the push rod to reciprocate between the disengagement position and the connection position, and further drive the pushing and pressing piece to axially reciprocate along the guide rod, so that the driving shaft is pushed away.

More specifically, the push rod assembly further comprises a push rod and a transmission gear, and the axial direction of a rotating shaft of the transmission gear is orthogonal to the reciprocating movement direction of the push rod. The push rod can move between a jacking position and a releasing position in a reciprocating way along the direction parallel to the reciprocating movement of the push rod. The push rod is provided with a first rack meshed with the transmission gear, the ejector rod is provided with a second rack meshed with the transmission gear, the first rack and the second rack are arranged in parallel, and the transmission gear is located between the first rack and the second rack. When the ejector rod is positioned at the jacking position, the push rod is positioned at the connecting position; when the ejector rod is located at the releasing position, the push rod is located at the disengaging position.

Preferably, the control unit further comprises a reset element, and the reset force of the reset element forces the push rod to reset to the disengagement position. The push rod is driven to reciprocate between a disengagement position and a connection position by the extrusion force between the push rod assembly and the main machine component and the reset force of the reset piece, and then the pushing piece is driven to reciprocate along the axial direction of the guide rod, so that the driving shaft is pushed away.

Drawings

FIG. 1 is a structural view of a conventional rotational force transmitting assembly;

FIG. 2 is an exploded structural view of the rotational force transmitting assembly shown in FIG. 1;

FIG. 3 is a perspective view of a first embodiment of the present invention;

FIG. 4 is a perspective view of the photosensitive drum, the pushing assembly and the control unit in the first embodiment of the present invention;

fig. 5 is a perspective view of a rotational force transmission member in the first embodiment of the present invention;

FIG. 6 is a perspective view of a pusher and a linkage according to a first embodiment of the invention;

FIG. 7 is a structural view of the rotational force transmitting assembly, the urging member, the connecting member and the first elastic member in the first embodiment of the present invention;

FIG. 8 is a perspective view of a slider in a first embodiment of the present invention;

FIG. 9 is a perspective view of a push rod in a first embodiment of the present invention;

fig. 10 is an exploded view of the drum, the connecting members, the conductive brackets, the sliders, the pins, the push rods and the return members of the first embodiment of the present invention;

FIG. 11 is a diagram showing the relative positions of the switching device and the case according to the first embodiment of the present invention;

FIG. 12 is a schematic view illustrating an assembling process between the push rod, the restoring member and the cartridge according to the first embodiment of the present invention;

FIG. 13 is a diagram illustrating a state in which the first embodiment of the present invention is loaded into a host computer;

FIG. 14 is an exploded view of the link, slider, pin, push rod and return member of the second embodiment of the present invention;

fig. 15 is a schematic view for explaining an assembling process between the push rod, the restoring member and the case in the fourth embodiment of the present invention;

FIG. 16 is a perspective view of a rotational force transmitting assembly, a pushing assembly and a control unit in a fifth embodiment of the present invention;

FIG. 17 is an exploded perspective view of the rotational force transmitting assembly, the biasing assembly and the control unit in the fifth embodiment of the present invention;

FIG. 18 is a perspective view of the rotary force transmitter, the pressing assembly, the first elastic member and the push rod in the sixth embodiment of the present invention;

FIG. 19 is an exploded perspective view of the rotary force transmitter, the pushing assembly and the first resilient member in the sixth embodiment of the present invention;

FIG. 20 is a perspective view of a control unit and pushing assembly of the seventh embodiment of the present invention;

fig. 21 is a perspective view of a rotational force transmitting member in an eighth embodiment of the present invention;

fig. 22 is a perspective view of an electromagnet in a ninth embodiment of the present invention.

The invention is further illustrated by the following examples and figures.

Detailed Description

The invention mainly adds a mechanism for pushing the driving shaft of the main machine away from the rotating force receiving part on the processing box so as to improve the smoothness of the disconnection of the processing box in the process of taking out the processing box from the main machine, and other structures of the processing box can be completely designed according to the existing products.

The processing box is suitable for the main machine which can move towards the direction far away from the processing box along the self axial direction of the driving shaft when the end part of the driving shaft of the main machine is pressed.

First embodiment

Referring to fig. 3, the process cartridge 1 has a cartridge body 11, a photosensitive drum 12 rotatably supported between both end walls of the cartridge body 11, a control unit constituted by a switching device 13 and a first spring and a pressing member mounted on the cartridge body 11.

Referring to fig. 4, the rotation force transmitting assembly 122 of the photosensitive drum 12 is mounted on one axial end of the drum 121, the conductive bracket is mounted on the other axial end of the drum 121, and the drum 121 is composed of an aluminum tube and a photosensitive material layer coated outside the aluminum tube. The rotational force transmission assembly 122 is composed of a rotational force transmission member, an axial stopper, a torsion spring, and a drum gear.

The switching device 13 is disposed at an end of the casing remote from the rotational force transmitting assembly 122, and is composed of a push rod 131 and a restoring member, and the restoring member is composed of two restoring springs 132.

The pushing assembly 14 is composed of a pushing rod, a connecting rod and a slider, and the pushing rod and the connecting rod correspondingly constitute the pushing piece and the connecting piece of the embodiment.

Referring to fig. 5, the rotational force transmitter 1221 is composed of a guide rod 12211 having a cylindrical shape and a rotational force receiving portion 12212 at one axial end of the guide rod 12211. The guide rod 12211 is provided on a radially outer wall thereof with an output arm 12213 extending radially outward therefrom. A groove 12214 is formed in an outer end wall 12215 of the rotational force receiving portion 12212 facing away from the guide rod 12211, the groove 12214 penetrates the rotational force receiving portion 12212 in the radial direction of the guide rod 12211, the outer end walls 12215 on both sides of the groove 12214 are each formed to protrude outward in the axial direction of the guide rod 12211 with one rotational force receiving arm 12216, and both the rotational force receiving arms 12216 and the groove 12214 are arranged centrally symmetrically with respect to the axis of the guide rod 12211. The rotational force receiving member 1221 is formed with a guide hole 12210 in the axial direction of the guide rod 12211, and the guide hole 12210 is coaxial with the guide rod 12211 and penetrates the rotational force receiving member 1221.

Referring to fig. 6, the pushing rod 141 and the connecting rod 142 are both of a round rod structure and are integrally formed, and the diameter of the pushing rod 141 is smaller than that of the connecting rod 142.

Referring to fig. 7, the drum gear 1224 has a generally cylindrical outer shape, and is provided with a housing chamber 12240 opened at one axial end thereof, and the other axial end thereof is formed with a guide hole 12242 communicating with the housing chamber 12240. A helical gear 12241 is provided on a radially outer wall of approximately the middle in the axial direction of the drum gear 1224, for transmitting the rotational force received by the drum gear 1224 to other rotary members. An inner wall of the housing chamber 12240 parallel to the axial direction of the drum gear 1224 is provided with an input arm 12244 extending toward the radial center of the drum gear 1224.

The other axial end of the guide rod 12211 passes through a through hole 12220 formed in the axial stopper 1222 in order, the torsion spring 1223, the accommodating chamber 12240 to the guide hole 12242, so that the rotational force transmitter 1221 can reciprocate relative to the drum gear 1224 in the axial direction of the guide rod 12211; in the circumferential direction of the drum gear 1224, the output arm 12213 is in abutting contact with the input arm 12244 at the position of the input arm 12244, thereby transmitting the rotational force received by the rotational force receiving portion 12212 to the drum gear 1224.

One torsion arm of the torsion spring 1223 is fixed to one of the output arms 12213, and the other torsion arm is fixed to a fixing post 12243 formed in the accommodating chamber 12240, so that the output arm 12213 is located between the two input arms 12244 in the circumferential direction of the drum gear 1224, i.e., the elastic restoring force of the torsion spring 1223 in the circumferential direction urges the output arm 12213 away from the input arm 12244. The axial stop 1222 covers the open end of the receiving cavity 12240, and fixedly connects the axial stop 1222 and the drum gear 1224 by welding; also, the output arm 12213 is urged against the axial stopper 1222 by the elastic restoring force of the torsion spring 1223 in the axial direction, that is, the rotational force receiving portion 12212 is urged away from the accommodating chamber 12240 by the axial restoring force of the torsion spring 1223, and the axial stopper 1222 constitutes a stopper for the rotational force receiving portion 12212 away from the accommodating chamber 12240.

An end of the pushing rod 141 remote from the connecting rod 142 passes through the guide hole 12210 and protrudes into the recess 12214. The first spring 15 is sleeved outside the pushing rod 141, and one end of the first spring 15 abuts against the end surface of the guide rod 12211 away from the rotating force receiving portion 12212, and the other end abuts against the end surface 1420 of the connecting rod 142 adjacent to the pushing rod 141, and the first spring 15 constitutes a first elastic member of the present embodiment.

Referring to fig. 8, the base 1430 of the slider 143 is a cylinder, one axial end of which is a truncated cone-shaped structure 1431, and the slider 143 is axially formed with an axial through hole 1432 penetrating through end faces of two axial ends thereof.

Referring to fig. 9, the body 1310 of the push rod 131 is a plate-shaped U-shaped fork structure, the end far away from the fork arm protrudes in the width direction to form a pressing end 1311, and the free end of the fork arm protrudes outward in the width direction to form a limiting hook 1315. The end surface of the top pressing end part 1311 close to the limiting clamping hook 1315 is provided with mounting

columns

13111 and 13112.

The yoke is recessed in the surface of the rotating force transmitting assembly 122 along the guide rod 12211, and forms a first detaining section 1312, a connecting section 1313 and a second detaining section 1314, which are connected to each other, in this embodiment, the first detaining section 1312 and the second detaining section 1314 are both planes that are orthogonal to the guide rod 12211 in the axial direction, and the connecting section 1313 is a slope connecting the first detaining section 1312 and the second detaining section 1314. The distance between the second stagnation section 1314 and the rotational force receiving portion 12212 in the axial direction of the guide rod 12211 is larger than the distance between the first stagnation section 1312 and the rotational force receiving portion 12212 in the axial direction of the guide rod 12211. The first stagnation section 1312, the connection section 1313, and the second stagnation section 1314 together constitute a slide on which the slider 143 slides.

Referring to fig. 10, during the process of assembling the process cartridge, the other axial end of the drum 121 is sleeved on the conductive bracket 124, and an end surface of the connecting rod 142 away from the pushing rod is formed with a shaft hole 1420 coaxially arranged with the shaft through hole 1432, and the end sequentially passes through the inner cavity of the drum 121 and the shaft hole 1240 of the conductive bracket 124 and is in clearance fit with the shaft hole 1240.

Referring to fig. 10 and 11, the body 160 of the pin 16 is fixed in the shaft hole 1111 formed in the conductive end cap 111 of the box body, the pin 161 thereof is inserted into the shaft through hole 1432 and the shaft hole 1420 in sequence in the axial direction and is in clearance fit with the shaft through hole 1432, and the shaft through hole 1432 is coaxially arranged with the connecting rod 142, so that the connecting rod 142 and the slider 143 can move along the axial direction of the pin 161 while rotating around the pin 161. In the axial direction of the connecting rod 142, the slider 143 is located on the side of the push rod 131 facing the rotational force receiving portion 12212, that is, the small-diameter end surface of the circular truncated cone-shaped structure 1431 is pressed against the slide way by the restoring force of the first spring 15.

Referring to fig. 12, the conductive end cover 111 is formed with a sliding groove 1110 matching with the push rod 131, and a mounting groove 1112 and a mounting groove 1113 located on two sides of the sliding groove 1110, a mounting post 1114 is formed at the bottom of the mounting groove 1112, a mounting post 1115 is formed at the bottom of the mounting groove 1113, the lower end of the right return spring 132 is sleeved on the fixing post 1114, and the lower end of the left return spring 132 is sleeved on the fixing post 1115.

One end of the push rod 131, which is provided with a limiting hook 1315, is inserted into the sliding groove 1110, the limiting hook 1315 is compressed after being plugged into the sliding groove 1110, is released after penetrating out of the sliding groove 1110 and is buckled on an outlet end face 11101 of the sliding groove 1110, and when the limiting hook 1315 abuts against the end face of the sliding groove 1110, the push rod 131 is stopped at a separation position; the top pressing end 1311 is located outside the entrance end of the chute 1110. The other end of the right return spring 132 is sleeved on the fixed column 13111, the other end of the left return spring 132 is sleeved on the fixed column 13112, and both are in a compressed state and the elastic restoring force thereof forces the push rod 131 to move to the disengaged position, that is, the restoring force of the restoring member restores the push rod 131 to the disengaged position.

Referring to fig. 3 to 13, before the process cartridge 1 is loaded into the main unit, the pressing end 1311 causes the push rod 131 to be always held at the disengaged position by the elastic restoring force of the return spring 132, at this time, the slider 143 abuts against the first staying section 1312, the end face 1410 of the pressing rod 141 is caused to extend out of the guide hole 12210 by the connecting rod 142, the end face 1410 edge of the pressing rod 141 is caused to act on the drive shaft 03 as the process cartridge 1 is loaded into the main unit, the drive shaft 03 is caused to move in the direction away from the rotational force receiving section 12212 in the axial direction, and the stopper 04 on the end of the guide of the main unit applies a pressing force to the pressing end 1311 in the direction close to the guide 12211 to compress the return spring 132, the end face of the slider 143 close to the rotational force receiving section 12212 slides in the connecting section 1313 to the second staying section 1314, at this time, the push rod 131 is located at the coupling position, and the pressing rod 141 is gradually retracted into the guide hole 12210 in the axial direction by the elastic restoring force of the first spring 15, and the drive shaft 03 moves in the direction close to the rotational force receiving section 12212 until the rotational force receiving section 12212 is coupled. In the direction from the disengaged position to the coupled position, second stagnation section 1314 is located upstream of first stagnation section 1312.

After the carbon powder in the process cartridge 1 is exhausted, the process cartridge 1 needs to be replaced, the cover of the host computer is opened, a certain pulling force is applied to the conductive end of the cartridge body 1, so that the conductive end is pulled out by a certain distance, the top pressing end 1311 is not pressed by the baffle 04, the elastic restoring force of the return spring 132 forces the push rod 131 to move to the disengagement position, the driving slider 143 moves from the second retention section 1314 to the first retention section 1312 along the connecting section 1313, and the connecting rod 142 drives the pushing rod 141 to push out in the direction of approaching the driving shaft 03 along the axial direction of the guide rod 12211, so as to push the driving shaft 03 away from the rotating force receiving part 12212 along the axial direction thereof, so that the rotating force receiving part 12212 is disengaged from the driving shaft 03, and the process cartridge 1 is conveniently taken out of the host computer.

Second embodiment

As a description of the second embodiment of the present invention, only the differences from the first embodiment will be described below.

Referring to fig. 14, the slider 243 and the connecting rod 242 are integrally formed, a necking part 2420 is formed at the joint of the connecting rod 242 and the small-diameter end surface of the circular truncated cone-shaped structure 2431, the outer diameter of the base 2430 is the same as that of the connecting rod 242, and the distance between the two prongs of the U-shaped fork structure is smaller than the diameter of the small-diameter end surface of the circular truncated cone-shaped structure 2431 but larger than the diameter of the necking part 2420.

The pin 261 of the pin 26 extends axially into the shaft hole 2432 and is in clearance fit therewith, so that the connecting rod 242 and the slider 243 can rotate about the pin 261 while being movable in the axial direction.

Along the direction that the top pressure end portion 2311 indicates the limiting clamping hook 2315, the slide way is composed of a second staying section 2314, a connecting section 2313 and a first staying section 2312, and the slide block 243 is located on one side, far away from the rotating force receiving portion, of the push rod 231.

A first spring (not shown) is sleeved outside the pin 261, and one end of the first spring is pressed against the end surface of the slider 243, and the other end of the first spring is pressed against the pin 26. In the direction in which the process cartridge is loaded into the main body, the positioning catch 2315 is located downstream of the pressing end 2311, i.e., directed toward the coupling position in the disengaging position, and the first staying section 2312 is located downstream of the second staying section 2314.

In the process of loading the processing box into the main machine, the push rod 231 is located at the disengaging position under the action of the restoring force of the restoring piece, at the moment, the small-diameter end face of the circular truncated cone-shaped structure 2431 is pressed on the first detention section 2312 in a propping manner, and the push rod extends out of the guide hole under the action of the restoring force of the first spring; after closing the main body cover, the main body cover applies a pushing force to the pushing end 2311 to compress the return spring 232, so that the slider 243 slides from the first retention section 2312 to the second retention section 2314 along the connection section 2313, the pushing rod is pulled back into the guide hole, the connection between the driving shaft and the rotating force receiving part is completed, and at this time, the push rod 231 is located at the connection position.

After the main body cover is opened, the push rod 231 is moved to the disengagement position by the restoring force of the restoring spring 232, the slider 243 slides to the first retention section 2312 along the connecting section 2313 from the second retention section 2314, and the push rod extends out of the guide hole by the restoring force of the first spring to push away the driving shaft in the direction away from the rotational force receiving part, thereby facilitating the disengagement of the driving shaft and the rotational force receiving part.

Third embodiment

As a description of the third embodiment of the present invention, only the differences from the second embodiment will be described below.

Referring to fig. 14, the return member, i.e., the return spring 232, is eliminated and the reciprocating movement of the push rod 231 between the disengaged position and the coupled position is manually triggered by pushing the end portion to apply a push-pull force.

When the process cartridge is to be detached from the main unit, a pulling force directed from the limiting hook 2315 to the pressing end 2311 is applied to the pressing end 2311, so that the slider 243 is pressed against the first retention section 2312, that is, the push rod 231 is located at the disengagement position, and under the restoring force of the first spring, the push rod extends out of the guide hole and pushes the driving shaft away from the rotating force receiving portion; at other times, the slider is pressed against the second staying section 2314, that is, the push rod 231 is in the coupling position, and the push rod is located in the guide hole, so that the coupling of the rotational force receiving portion and the drive shaft is facilitated.

Fourth embodiment

As a description of the fourth embodiment of the present invention, only the differences from the first embodiment will be described below.

And the mounting columns which are arranged on the top pressure end part and the bottom surface of the mounting groove and are used for fixing the spring are omitted.

Referring to fig. 15, the reset element is composed of a first magnetic block 321, a second magnetic block 322, a first magnetic block 323, and a second magnetic block 324, and the four magnetic blocks are all in a cylindrical structure.

The first magnetic block 321 is fixed on the end surface of the top pressing end portion 3311 of the push rod 331 close to the limiting hook 335 in an adhesive manner, the second magnetic block 322 is fixed on the bottom surface of the mounting groove 3103 in an adhesive manner, and the first magnetic block 321 and the second magnetic block 322 are arranged in a manner of being homopolar and opposite.

The first magnetic block 323 is fixed on the end surface of the top pressure end portion 3311 of the push rod 331 close to the limit hook 335 in an adhesive manner, the second magnetic block 324 is fixed on the bottom surface of the mounting groove 3102 in an adhesive manner, and the first magnetic block 323 and the second magnetic block 324 are arranged in a homopolar opposite manner.

The repulsion force of like poles between the magnetic blocks constitutes the reset force of the reset member of this embodiment.

Fifth embodiment

As a description of the fifth embodiment of the present invention, only the differences from the first embodiment will be described below.

Referring to fig. 16 and 17, the slider 443 is a ring-shaped body structure sleeved outside the pressing rod 441, and in this embodiment, is a ring-shaped body structure. The connection rod 442 is two pins arranged along the radial direction of the push rod 441 and fixedly connected thereto.

The guide rod 42211 has a sliding slot 42217 formed on a side wall thereof to be engaged with the coupling rod 442, and the sliding slot 42217 penetrates through the guide hole 42210 and an outer side wall of the guide rod 42211 in a radial direction of the guide rod 42211. Output arm 42213 is two pins fixed to guide 42211.

The control unit is composed of a push rod 434, a return spring 432, a transmission gear 433, a top rod 431 and a first spring 45, and the push rod 434, the top rod 431 and the transmission gear 433 constitute a push rod assembly of the present embodiment. Along the direction in which the push rod 434 reciprocates between the disengaged position and the coupled position, a first rack 4341 that meshes with the transmission gear 433 is formed on the body 4340 of the push rod 434, a second rack 4312 that meshes with the transmission gear 433 is also formed on the push rod 431, and the axial direction of the rotation axis of the transmission gear 433 is orthogonal to the direction in which the push rod 434 reciprocates.

The slide way on the push rod 434 is composed of a connecting section 4343 and a first retention section 4344.

The process of assembling the processing box is as follows, a first sliding groove matched with the push rod 434 and a second sliding groove matched with the push rod 431 are arranged on the end wall of the driving end of the box body, and the extending directions of the first sliding groove and the second sliding groove are parallel to each other.

After the push rod 441 passes through the guide hole 42210, the connecting rod 442 is attached to the push rod 441, the slider 443 is fitted around the guide rod 42211, and the output arm 42213 is fixed to the guide rod 42211.

The first spring 45 is fitted over the end of the push rod 441 remote from the rotational force receiving portion, and the fixing ring 451 is welded or bonded to the distal end thereof, so that the first spring 45 is compressed between the end surface of the guide rod 42211 and the end surface of the fixing ring 451, and the restoring force of the first spring 45 causes the connecting rod 442 to abut against the end surface of the slider 443 close to the rotational force receiving portion by the push rod 441.

In operation, when the main body 05 abuts against the abutting end 4311 of the top rod 431, the transmission gear 433, the first rack 4341 and the second rack 4312 are used for transmission, the push rod 434 moves in a direction away from the push rod 441, and under the restoring force of the first spring 45, the push rod 441 retracts into the guide hole 42210, so as to couple the rotational force receiving portion with the driving shaft, at this time, the push rod 434 is located at the coupling position, the top rod 431 is located at the abutting position, and the end surface of the slider 443 abuts against the end surface of the axial limiting member 4222.

After the cover 05 is opened, the top pressure end portion 4311 is not pressed by the cover 05, under the restoring force of the return spring 432, the top rod 431 moves in the direction away from the push rod 441, and further the push rod 434 moves in the direction close to the push rod 441, the slider 443 slides along the connecting section 4343 to the first retention section 4334, so as to push the push rod 441 out of the guide hole 42210, and push the driving shaft 03 away from the rotating force receiving portion, so as to be disconnected, at this time, the push rod 434 is located at the disconnection position, and the top rod 431 is located at the release position.

One end of the return spring 432 abuts against the box body, and the other end abuts against the abutting end of the push rod 431, and the restoring force of the return spring forces the push rod 431 to return to the releasing position, that is, forces the push rod 434 to return to the disengaging position.

Sixth embodiment

As a description of the sixth embodiment of the present invention, only the differences from the fifth embodiment will be described below.

Referring to fig. 18 and 19, the pushing assembly is formed by fixedly connecting a pushing block 541, a connecting block 542 and a slider 543, the pushing block 541 forms the pushing member of the present embodiment, and the connecting block 542 forms the connecting member of the present embodiment.

The first spring 55 is pressed between the slider 543 and the end surface of the rotational force receiving portion away from the driving shaft 03, that is, the restoring force of the first spring 55 forces the slider 543 to move axially along the guide rod 52211 in a direction away from the rotational force receiving portion. The slider 543 is formed by fixedly connecting two semi-ring structures by welding or bonding, and the connecting block 542, one of the semi-ring structures and the pushing block 541 are integrally formed, that is, the end of the connecting block 541 far from the slider 543 extends towards the direction close to the axis of the guide rod 52211 to form the pushing block 541.

The bottom surface of the groove 52214 of the rotational force receiving portion is concavely formed with a groove 2210 matching with the pushing block 541.

The process of assembling the process cartridge includes fitting the first spring 55 on the guide rod 52211, fixing the output arm 52213, placing the two half rings of the slider 543 outside the guide rod 52211, and fixedly connecting the two half rings into the slider 543 by bonding or welding.

When the push rod 543 is located at the coupling position, the pushing block 541 is embedded in the groove 52210 and abuts against the bottom surface of the groove 52210, and at this time, a gap exists between the slide block 543 and the axial limiting member.

When the push rod 543 moves from the coupling position to the disengagement position, the slide block 543 slides along the connecting section 5343 to the first retention section 5344, pushing the pushing block 541 out of the groove 52210, thereby pushing away the drive shaft 03 in a direction away from the rotational force receiving portion.

When the push rod 543 moves from the disengagement position to the coupling position, the slide block 543 slides out of the first retention section 5344 along the connection section 5343, the pushing block 541 retracts into the groove 52210 by the restoring force of the first spring 55, and the driving shaft 03 moves in a direction to approach the rotational force receiving portion.

Seventh embodiment

As a description of the seventh embodiment of the present invention, only the differences from the fifth embodiment will be described below.

Referring to fig. 20, one end of the push rod 641, which is away from the driving shaft 03, is fixedly connected to one end of the connecting rod 644, the other end of the connecting rod 644 is formed with a shoulder 6440, the other end passes through the inner cavity of the drum and is in clearance fit with the shaft through hole of the conductive bracket, the first spring 65 is pressed between the shoulder 6440 and the end surface of the conductive bracket, and the restoring force of the first spring forces the connecting rod 642 against the end surface of the sliding block 643, which is away from the rotating force receiving portion.

The control unit is composed of a push rod 631, a return spring 632 and a lever. The lever and the push rod 631 together constitute a push rod assembly of the present embodiment.

The body 6310 of the push rod 631 is a plate-shaped structure, the right end of which is bent by 90 degrees to form a top pressing end 6311, and the other end of which is protruded to form two limiting hooks 6313. An annular cylinder 6312 is arranged on the inner side surface of the jacking end portion 6311, an inner cavity of the annular cylinder 6312 is used for accommodating one end of the return spring 632, and in the working process, one end of the return spring 632 always abuts against the bottom surface of the accommodating cavity. A projection 6314 is formed on the side of the body 6310 opposite to the annular cylinder 6312 in a protruding manner, that is, the projection 6314 is formed on the plate surface of the body 6310 facing the lever. The end face of the protrusion 6314 away from the main body 6310 is a guide face 63140, and the hook 6313 points in a direction pressing against the end 6311, so that the distance between the guide face 63140 and the main body 6310 gradually increases.

The lever is composed of a receiving arm 633, an acting arm 634, and a rotating support shaft 635, and the rotating support shaft 635 is a rod body fixedly connected to the connecting portion of the receiving arm 633 and the acting arm 634. The receiving arm 633 is provided with a guiding groove 6330 matched with the protrusion 6314, and the guiding groove 6330 is a through groove. The end of the actuation arm 634 distal from the rotation support shaft 635 is a bayonet 6340 that mates with the slide 643. Wherein the acting arm 634 is deviated in a direction of approaching the rotational force receiving portion with respect to the receiving arm 633 in a direction of departing from the rotational support shaft 635, and the edge of the guide groove 6330 contacting the guide face constitutes a guide portion which is fitted with the guide face 63140 in this embodiment. The rotation support shaft 635 is rotatably fixed to the case about its axis.

When the main body cover 05 is closed, the cover 05 applies a pressing force to the top pressing end 6311 to compress the return spring 632, and the bayonet 6340 presses the slider 643 downward along the axial direction of the push rod 641 through the cooperation of the guide surface 63140 and the guide portion, and compresses the first spring 65 through the connecting rod 644, so that the push rod 641 retracts into the guide hole, and the rotational force receiving portion is coupled to the driving shaft 03, and at this time, the push rod 631 is located at the coupling position.

After the cover 05 is opened, the pressing end 6311 is not pressed by the cover 05, the push rod 631 moves in a direction away from the push rod 641 by the restoring force of the return spring 632, the guide portion slides along the guide surface 63140 by the restoring force of the first spring 65, and pushes the push rod 641 to extend out of the guide hole, so as to push away the driving shaft 03 in a direction away from the rotational force receiving portion, thereby facilitating the disengagement, and at this time, the push rod 631 is located in the disengagement position. The other end of the return spring 632 is pressed against the case, and its restoring force forces the push rod 631 to return to the disengaged position.

Eighth embodiment

As an explanation of the eighth embodiment of the present invention, only the differences from the fifth embodiment will be explained below.

Referring to fig. 21, a lower end of the slide groove 72217 on the rotational force receiving member 7221 is an open end, i.e., an end surface of the rotational force receiving member 7221 remote from the rotational force receiving portion is penetrated through the slide groove 72217.

The connecting rod, the pushing rod and the sliding block are integrally formed.

Ninth embodiment

As an explanation of the ninth embodiment of the present invention, only the differences of the first embodiment will be explained below.

Referring to fig. 5 and 22, the control unit is composed of the first spring 15, the electromagnet 81, and the control switch, and the connecting rod 142 constitutes the moving iron of the electromagnet 81. One end of the first spring 15 is fixedly connected with the end face of the guide rod, the other end is fixedly connected with the moving iron, a shaft shoulder which abuts against the lower end face of the guide rod 12211 is formed on the pushing and pressing rod 141, and the first spring 15 is always in a stretching state, namely, the restoring force of the first spring forces the pushing and pressing rod 141 to extend out of the guide hole 12210.

When the electromagnet 81 is energized, a downward pulling force is generated to the moving iron, thereby pulling the pushing rod 141 back to the guide hole 12210.

When the processing box is completely dropped, the power end of the electromagnet 81 is electrically connected with the host machine through the conductive end of the processing box.

The control switch of the electromagnet 81 is controlled by the closing or opening state of the main machine cover body, when the cover body is closed, the electromagnet 81 is in the power-on state, and when the cover body is opened, the electromagnet is in the power-off state.

Tenth embodiment

As a description of the tenth embodiment of the present invention, only the differences from the ninth embodiment will be described below.

The control switch of the electromagnet is positioned at the place where the box body handle and the like can be touched by hands, and the on-off state of the control switch is controlled manually.

In the first and fourth to eighth embodiments described above, the restoring member may be omitted, and the position of the push rod between the disengaging position and the coupling position may be manually controlled by extending the push rod out of the guide hole by the push rod and pushing the drive shaft away from the rotational force receiving portion only during the process of detaching the process cartridge from the main body, and retracting the push rod into the guide hole at other times.

The main idea of the invention is that a pushing and pressing component and a control unit are additionally arranged on a processing box and used for pushing away a driving shaft of a main machine in a direction away from a rotating force receiving part so as to improve the smoothness of the separation of the processing box from the main machine in the process of taking the processing box from the main machine, according to the idea, the structure of the control unit has various obvious changes, for example, when a push rod is manually controlled to reciprocate between a separation position and a connection position, the pushing and pressing component only needs to be formed by the pushing and pressing component, the distance between a second retention section and the rotating force receiving part in the axial direction of a guide rod can be set to be smaller than the distance between the first retention section and the rotating force receiving part in the axial direction of the guide rod, and the separation position and the connection position are opposite; there are many obvious variations of the construction of the pushing assembly, such as the cross-sectional shape of the pushing rod, e.g. the end surface of the pushing rod remote from the drum may be a convexly curved surface, preferably a spherical surface.

Claims

1. A process cartridge including a cartridge body and a photosensitive drum rotatably supported between both end walls of the cartridge body;

the photosensitive drum comprises a drum barrel and a rotating force transmission assembly arranged at one axial end of the drum barrel, wherein the rotating force transmission assembly comprises a rotating force transmission piece, and the rotating force transmission piece comprises a guide rod and a rotating force receiving part positioned at one axial end of the guide rod;

the method is characterized in that:

the rotating force transmission part is provided with a guide hole which is arranged along the axial direction of the guide rod and penetrates through the rotating force transmission part;

the pushing assembly comprises a pushing piece, the guide hole is in clearance fit with the pushing piece, and the pushing piece is used for applying pushing force to a driving shaft of the main machine to enable the driving shaft to be pushed away from the rotating force receiving part along the axial direction of the driving shaft;

the control unit is used for controlling the pushing and pressing piece to reciprocate along the axial direction of the guide rod;

the control unit comprises a push rod assembly and a first elastic piece, the push rod assembly comprises a push rod, and the push rod is arranged at one end, far away from the rotating force receiving part, of the box body;

the push rod can move back and forth between a disengaging position and a coupling position along the direction parallel to the end face of the box body;

and as the push rod moves back and forth between the disengaging position and the connecting position, the combined force of the first elastic piece and the push rod on the pushing piece drives the pushing piece to move back and forth along the axial direction of the guide rod.

2. A process cartridge according to claim 1, wherein:

the pushing assembly further comprises a slider;

the push rod is provided with a slide way, the slide way comprises a first detention section and a second detention section along the reciprocating movement direction of the push rod, and the axial distance between the second detention section and the rotating force receiving part is larger than the axial distance between the first detention section and the rotating force receiving part;

the restoring force of the first elastic piece forces the sliding block to be pressed on the slide way;

when the end of the push rod in the reciprocating direction is subjected to a force in the direction from the disengaging position to the coupling position, the slide block slides from the first retention section to the second retention section;

along with the sliding of the sliding block between the first retention section and the second retention section, the resultant force of the first elastic piece and the sliding block on the pushing piece drives the pushing piece to reciprocate along the axial direction of the guide rod.

3. A process cartridge according to claim 1, wherein:

the pushing assembly further comprises a connecting piece and a sliding block, and the sliding block is of an annular structure;

the annular body structure is sleeved outside the guide rod and is in clearance fit with the guide rod;

the connecting piece is arranged along the radial direction of the guide rod and is fixedly connected with the pushing piece;

the guide rod is provided with a sliding groove matched with the connecting piece, the sliding groove is arranged along the axial direction of the guide rod, and the sliding groove penetrates through the guide hole and the outer side wall of the guide rod along the radial direction of the guide rod;

the connecting piece is fixedly connected with the sliding block, or the restoring force of the first elastic piece forces the connecting piece to abut against the end face of the sliding block far away from the drum barrel;

the push rod assembly is arranged at one end of the box body close to the rotating force receiving part;

the push rod assembly further comprises a push rod and a transmission gear, and the axial direction of a rotating shaft of the transmission gear is orthogonal to the reciprocating direction of the push rod;

the ejector rod can move in a reciprocating manner between a jacking position and a releasing position along the direction parallel to the reciprocating movement of the push rod;

the push rod is provided with a first rack meshed with the transmission gear, the ejector rod is provided with a second rack meshed with the transmission gear, the first rack and the second rack are arranged in parallel, and the transmission gear is positioned between the first rack and the second rack;

when the ejector rod is positioned at the jacking position, the push rod is positioned at the connecting position;

when the ejector rod is located at the release position, the push rod is located at the disengagement position;

and the first elastic piece and the push rod drive the sliding block to reciprocate along the axial direction of the guide rod along with the reciprocating movement of the ejector rod between the jacking position and the releasing position.

4. A process cartridge according to claim 1, wherein:

the pushing assembly further comprises a connecting piece and a sliding block, and the sliding block is of an annular body structure;

a sliding groove matched with the connecting piece is formed in the guide rod and is arranged along the axial direction of the guide rod, and the sliding groove penetrates through the guide hole and the outer side wall of the guide rod along the radial direction of the guide rod;

the connecting piece is fixedly connected with the sliding block, or the restoring force of the first elastic piece forces the connecting piece to abut against the sliding block to be close to the end face of the drum barrel;

the push rod assembly further comprises a lever;

the axial direction of the rotating support shaft of the lever is orthogonal to the axial direction of the guide rod;

the push rod is provided with a guide surface, and the distance between the guide surface and the rotating force receiving part in the axial direction of the guide rod is gradually increased along the direction from the disengaging position to the coupling position;

a guided part which slides along the guide surface is arranged on the receiving arm of the lever;

and the end part of the action arm of the lever and the resultant force of the first elastic piece on the sliding block drive the sliding block to reciprocate along the axial direction of the guide rod along with the reciprocating movement of the push rod between the disengaging position and the connecting position.

5. A process cartridge according to any one of claims 1 to 4, wherein:

the guide hole and the guide rod are coaxially arranged, and the end face of the pushing and pressing part, which is far away from the drum barrel, is an outward convex smooth arc-shaped face.

6. A process cartridge according to any one of claims 1 to 4, wherein:

the control unit further comprises a reset piece;

the reset force of the reset piece forces the push rod to reset to the disengaging position.

7. A process cartridge including a cartridge body and a photosensitive drum rotatably supported between both end walls of the cartridge body;

the method is characterized in that:

the pushing assembly comprises a pushing element, a connecting element and a sliding block, the pushing element is used for applying pushing force to a driving shaft of the main machine to enable the driving shaft to be pushed away from the rotating force receiving part along the axial direction of the driving shaft, the connecting element is positioned beside the guide rod, the end part of the connecting element far away from the drum barrel extends along the direction close to the axis of the guide rod to form the pushing element, the sliding block is of an annular body structure, the annular body structure is sleeved outside the guide rod and is in clearance fit with the guide rod, and the end part of the connecting element far away from the pushing element is fixedly connected with the annular body structure;

the control unit is used for controlling the pushing and pressing piece to reciprocate along the axial direction of the guide rod; the control unit comprises a first elastic piece and a push rod assembly, the push rod assembly is arranged at one end, close to the rotating force receiving part, of the box body, the push rod assembly comprises a push rod, the push rod can move back and forth between a separation position and a connection position along a direction parallel to the end face of the box body, the push rod can move back and forth between the separation position and the connection position along with the push rod, and the resultant force of the first elastic piece and the push rod on the sliding block drives the sliding block to move back and forth along the axial direction of the guide rod.

8. A process cartridge according to claim 7, wherein:

the push rod assembly further comprises a push rod and a transmission gear, and the axial direction of a rotating shaft of the transmission gear is orthogonal to the reciprocating movement direction of the push rod;

when the ejector rod is located at the releasing position, the push rod is located at the disengaging position.

9. A process cartridge according to claim 7 or 8, wherein:

the control unit further comprises a reset piece;