CN106959598B

CN106959598B - Process cartridge and image forming apparatus

Info

Publication number: CN106959598B
Application number: CN201610022437.4A
Authority: CN
Inventors: 熊志强; 曹建新; 杨妙玲
Original assignee: Ninestar Corp
Current assignee: Ninestar Corp
Priority date: 2016-01-12
Filing date: 2016-01-12
Publication date: 2021-05-04
Anticipated expiration: 2036-01-12
Also published as: CN106959598A

Abstract

The invention provides a processing box and an image forming device, wherein the processing box is detachably arranged in the image forming device, the image forming device comprises a main body, the main body is provided with an opening and a door cover which is connected to the main body and can be used for closing the opening in an opening and closing manner, the processing box is provided with a locking component, and the locking component is used for interacting with a pulling component on the door cover and promoting the processing box to move relative to the main body under the driving of the pulling component. The invention provides a processing box and an image forming device, which can improve the convenience of the process of mounting or taking out the processing box.

Description

Process cartridge and image forming apparatus

Technical Field

The present invention relates to an image forming apparatus, and more particularly to a process cartridge and an image forming apparatus.

Background

An electrophotographic image forming apparatus is a device that forms an image on a recording material by an electrophotographic image forming process technique, such as: electrophotographic copies, laser printers, electrophotographic printers, facsimile machines, word processors, and the like.

A conventional image forming apparatus includes a main body, and a process cartridge provided in the main body. The process cartridge as a whole includes a cartridge body, a photosensitive element provided in the cartridge body and used for forming an electrostatic latent image, and a process device operable on the photosensitive element, and is detachably mountable to a main body of an image forming apparatus. The processing box is used as a consumable, needs to be replaced at the end of the service life, is set to be detachable from the main body, is convenient to detach, does not need to depend on professional maintenance workers, and is convenient for a user to replace by himself. Therefore, the detachable process cartridge is widely used in the electrophotographic image forming apparatus.

In the related art, a main body of an image forming apparatus is generally provided with a door, and the door and the main body enclose a cavity in which a process cartridge is disposed. The door is openable with respect to the main body, and the process cartridge can be loaded or unloaded after the door is opened. The process of mounting the process cartridge in the main body or taking the process cartridge out of the main body is manually performed by a user. Fig. 1 is a first structural diagram illustrating the mounting of a door and a main body in a conventional image forming apparatus, and fig. 2 is a second structural diagram illustrating the mounting of the door and the main body in the conventional image forming apparatus. Fig. 1 and 2 show two different door opening modes of the image forming apparatus. In the main body shown in fig. 1, a door 15 is located at the front end of the main body 100, the door 15 and the main body 100 are connected by a hinge shaft 11, and the opening and closing of the opening of the main body 100 are achieved by the rotation of the door 15 about the hinge shaft 11. Fig. 2 shows a main body structure of another structure, and a door 15 is provided on the top of the main body 100.

When the process cartridge 200 is mounted in the main body 100, the door 15 is opened, the user holds the handle end of the process cartridge 200, mounts the process cartridge 200 into the main body 100 from the opening of the main body 100 along the X direction in fig. 1, 2, and fixes the process cartridge 200 inside the main body by the guide rails (not shown) and the positioning means on both side walls of the main body 100.

The prior art has a disadvantage in that, when the process cartridge 200 is taken out of the main body 100, since the process cartridge 200 is chucked in the main body 100 by the positioning means inside the main body 100, a large force is required to take out the process cartridge 200 from the main body 100, making it difficult to take out the process cartridge 200; in addition, since the temperature inside the main body 100 is high after a long period of operation, when a user manually takes out the process cartridge 200 from the main body 100, the user needs to insert his or her hand into the main body 100, and the user feels discomfort due to the high temperature, and may even feel hot, particularly when touching some metal parts inside. Therefore, the technical scheme can cause poor comfort and convenience in the operation process of the user.

Disclosure of Invention

The invention provides a processing box and an image forming device, which are used for improving the convenience of the process of mounting or taking out the processing box.

A first aspect of the present invention provides a process cartridge detachably mountable to an image forming apparatus including a main body provided with an opening and a door cover connected to the main body and openably closing the opening, the process cartridge being provided with a lock member for interacting with a pull member on the door cover and urging the process cartridge to move relative to the main body by the pull member.

In the process cartridge as described above, the locking member is provided with a guide surface and an acting surface, the guide surface is used for guiding the acting part in the pulling member to move to a position opposite to the acting surface of the locking member in the process of closing the door cover, so that the acting part in the pulling member is in contact with the acting surface and applies acting force to the acting surface to drive the process cartridge to move relative to the main body in the process of opening the door cover.

In the process cartridge as described above, the guide surface on the lock member and the acting surface are in opposite positions, the guide surface facing the opening.

In the above process cartridge, the guide surface is an inclined surface or a curved surface.

In the above-described process cartridge, the operation surface is provided with an operation groove, and the operation portion of the pulling member is positioned in the operation groove and applies a force toward the opening direction to the bottom surface of the operation groove in a process of pulling the process cartridge to move.

The process cartridge as described above, wherein the locking member comprises: the sliding groove is internally provided with a sliding block and a second elastic piece, one end of the second elastic piece is abutted to the bottom of the sliding groove, the other end of the second elastic piece is abutted to one end of the sliding block, and the other end of the sliding block is provided with the guide surface.

According to the processing box, the inner wall of the sliding groove is provided with the guide groove, and the sliding block is provided with the guide post capable of sliding along the guide groove.

The utility model provides a handle the box, handle box length direction's both ends and be provided with the arch, the spout sets up in the arch, the guide way is including being linked together and setting to the mounting groove of setting for the angle and dodging the groove, the mounting groove extends to the opening part of spout, the tip that dodges the groove is sealed, the mounting groove with dodge the groove the extending direction all with the length direction of handling the box is perpendicular.

The utility model provides a handle the box, handle box length direction's both ends and be provided with the arch, the spout does in the arch with handle box length direction vertically through-hole, the one end of through-hole is sealed through an end cover, the guide way is sealed for one end, and the other end extends to dodge the groove of the opening part of through-hole, the extending direction of dodging the groove with the length direction of handling the box is perpendicular.

As described above, the end cap closes the through hole by means of a screw or welding or adhering.

According to the processing box, the guide groove comprises the mounting groove, the communicating groove and the avoiding groove which are sequentially connected into a U shape, one end of the mounting groove facing to the length direction of the processing box extends to the opening of the sliding groove, and the end part of the avoiding groove is closed; the guide post can slide along the avoiding groove.

In the above process cartridge, the second elastic member is a spring.

The process cartridge as described above, wherein the locking member comprises: set up in the pin pivot of handling box length direction's tip, cover establish in the pin pivot and can for pin pivot pivoted pin and set up in just be located respectively on handling box length direction's the tip the dog and the stopper of pin both sides, the pin orientation open-ended side does the spigot surface deviates from the open-ended side does the action face.

According to the processing box, the end part of the processing box in the length direction is further provided with the positioning column and the third elastic piece penetrating through the positioning column, the positioning column is located between the stop block and the stop lever, one end of the third elastic piece is abutted against the stop lever, and the other end of the third elastic piece is abutted against the stop block.

Another aspect of the present invention provides an image forming apparatus including the process cartridge as described above.

In the image forming apparatus as described above, the pulling member includes a connecting portion connected between an inner surface of the door cover and an acting portion for interacting with the locking member on the process cartridge.

In the image forming apparatus, the acting portion has a hook-shaped structure.

In the image forming apparatus, the connecting portion includes a fixing portion, a pull rod and a first elastic member, wherein the fixing portion is disposed on an inner surface of the door cover, the pull rod is disposed on the fixing portion, and two ends of the first elastic member respectively abut against the door cover and the pull rod; the action portion is in the door closure in-process with the action portion is in slide on the action surface, the pull rod is in the locking part under the effect of spigot surface relative the fixed part swing, just the pull rod with after the spigot surface breaks away from reset under the effect of first elastic component, the action portion remove with the position that the action surface is relative.

In the image forming apparatus, the connecting portion and the door cover are integrally formed by injection molding or fixedly connected by means of screws, welding or the like, and the position of the connecting portion relative to the door cover is fixed.

The image forming apparatus as described above, the pull rod includes: the rotating shaft part and the abutting part are connected between the rotating shaft part and the acting part and form a set angle with the rotating shaft part, and an abutting groove is formed in the abutting part; the fixing part is provided with a round hole used for penetrating the rotating shaft part and a limiting block used for limiting the rotating angle of the pull rod.

In the image forming apparatus, the fixing portion is further provided with a fixing column, the first elastic element is a torsion spring, the torsion spring is sleeved on the fixing column, one end of the torsion spring abuts against the door cover, and the other end of the torsion spring abuts against an abutting groove formed in the abutting portion.

The invention provides a processing box and an image forming device, wherein a locking component is arranged on the processing box and interacts with a pulling component arranged on the inner surface of a door cover, the acting end of the pulling component can move to one side of the locking component, which is far away from an opening of a main body, in the closing process of the door cover, and force towards the opening direction is applied to the locking component in the opening process of the door cover, so that the processing box is pulled out from the main body, a user does not need to apply large force, and the hand of the user does not need to extend into the main body, so that the processing box is not influenced by high temperature.

Drawings

FIG. 1 is a first schematic view of a conventional image forming apparatus with a door mounted to a main body;

FIG. 2 is a second schematic view of a conventional image forming apparatus with a door cover and a main body mounted thereon;

FIG. 3 is a schematic view of a structure of a process cartridge in a conventional image forming apparatus;

FIG. 4 is a schematic structural diagram of a process cartridge according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a locking component according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a door according to a first embodiment of the present invention;

fig. 7 is a schematic structural diagram of a pulling member according to an embodiment of the present invention;

FIG. 8 is an installation view of a pulling member according to one embodiment of the present invention;

FIG. 9 is an installation view of the pulling member on the other side according to one embodiment of the present invention;

FIGS. 10a and 10b are top and left side views of a pulling member engaging a locking member during closure of a door according to an embodiment of the present invention;

FIG. 11 is a top view of the pulling member engaging the locking member after the door is closed according to one embodiment of the present invention;

FIG. 12 is a schematic view of a door opening process according to an embodiment of the present invention;

fig. 13a and 13b are schematic views illustrating a process cartridge being longitudinally pulled up by a pulling member according to an embodiment of the present invention;

FIGS. 14a and 14b are schematic structural views showing locking members distributed at different positions on a process cartridge according to an embodiment of the present invention;

FIG. 15 is a schematic view of another embodiment of a locking member and a pulling member engaged with each other according to the present invention;

fig. 16 is a schematic structural view of a process cartridge according to a second embodiment of the present invention;

fig. 17 is a schematic structural view of a locking member according to a second embodiment of the present invention;

fig. 18 is a schematic structural view of a door according to a second embodiment of the present invention;

FIG. 19 is an installation view of a locking member provided in accordance with a second embodiment of the present invention;

fig. 20 is a schematic structural view of a guide groove in a locking member according to a second embodiment of the present invention;

FIG. 21 is a schematic structural view of another locking member according to a second embodiment of the present invention;

FIG. 22 is a left side view of the interaction of the pulling member and the locking member during the closing of the door as provided by embodiment two of the present invention;

fig. 23 is a schematic structural view of another pulling member according to a second embodiment of the present invention;

FIG. 24 is a schematic view showing the interaction of the pulling member shown in FIG. 23 with the locking member in the process cartridge;

fig. 25 is a schematic structural view of a process cartridge according to a third embodiment of the present invention;

FIG. 26 is a schematic view of the locking member of FIG. 25;

FIG. 27 is a schematic view of the mounting structure of the locking member of FIG. 26;

FIG. 28 is a schematic view of the structure of the guide groove of FIG. 27;

fig. 29 is a schematic structural view of interaction of a locking member and a pulling member in a process cartridge according to a third embodiment of the present invention;

fig. 30 is a schematic structural view of another process cartridge provided in the third embodiment of the present invention;

fig. 31 is a schematic view showing an installation structure of a locking member of another process cartridge according to a third embodiment of the present invention;

fig. 32 is a schematic structural view of a process cartridge according to a fourth embodiment of the present invention;

FIGS. 33a and 33b are schematic views showing an installation structure of a lock member provided in a process cartridge according to a fourth embodiment of the present invention;

fig. 34 is a schematic view showing the interaction between the locking member and the pulling member in the process cartridge according to the fourth embodiment of the present invention.

Detailed Description

Example one

The present embodiment provides an image forming apparatus including a main body provided with an opening, a door cover attached to the main body and adapted to openably close the opening, and a process cartridge detachably provided in the main body. The process cartridge can be mounted into the main body from the opening or removed from the main body by opening the door cover.

Fig. 3 is a schematic view of a structure of a process cartridge in a conventional image forming apparatus. As shown in fig. 3, the direction in which the process cartridge 200 is mounted to the main body 100 (the main body 100 shown in fig. 1 and 2) is set to be the X direction, and when the process cartridge 200 is mounted to the main body 100, a user holds one side of the process cartridge, which is referred to as a front side 201 of the process cartridge; the process cartridge 200 is set to have a Z direction along the longitudinal direction of the process cartridge 200, and both ends of the process cartridge 200 in the Z direction have a first sidewall 200a and a second sidewall 200b, respectively. A direction perpendicular to both the X direction and the Z direction of the process cartridge 200 is set as the Y direction.

The process cartridge 200 includes a cartridge body 202, and a rotary member (not shown) provided in the cartridge body 202 in the Z direction, the rotary member being a member having a rotation axis such as a photosensitive element, a developing element, or a charging element and being provided to rotate relative to the cartridge body 202.

The present embodiment improves the structure of the process cartridge 200 by providing a locking member on the process cartridge 200 and providing a pulling member on the inner surface of the door 15 (such as the door 15 shown in fig. 1 and 2) that can interact with the locking member so that the pulling member can move the entire process cartridge relative to the main body 100.

Specifically, the action end of the pulling member is movable to the side of the locking member facing away from the opening of the main body 100 during the closing of the door 15, and applies a force to the locking member in the direction of the opening during the opening of the door 15 to pull the process cartridge 200 out of the main body 100 without applying a large force to the user, and without the user's hand extending into the main body 100, free from the influence of high temperature.

In order to make the technical solutions related to the present invention easier and clearer for those skilled in the art to understand, the following description is made with reference to specific embodiments.

Fig. 4 is a schematic structural diagram of a process cartridge according to a first embodiment of the present invention. As shown in fig. 4, in the present embodiment, a locking member is provided on a side wall of the cartridge body 202 in the longitudinal direction, and is operable to cooperate with a pulling member on the door 15, so that the pulling member can pull the process cartridge out of the main body 100. The locking member may be provided on one of the side walls, or may be provided on both side walls. In order to uniformly apply the forces to both ends of the process cartridge to maintain the balance during the process of pulling the process cartridge, locking members may be symmetrically provided on the sidewalls of both ends of the cartridge body 202.

As shown in fig. 4, the first side wall 200a and the second side wall 200b of the box 202 are symmetrically provided with the locking members, and the locking members on both sides may be symmetrically provided. Specifically, the lock member is provided with a guide surface 210a1 facing the opening direction and an operation surface 210a3 facing away from the opening direction. In addition, an end face 210a2 is provided at the transition between the guide face 210a1 and the operating face 210a 3.

Wherein the guiding surface 210a1 may be an inclined surface (as shown in fig. 4). Alternatively, the guiding surface 210a1 may be a curved surface as shown in fig. 5, and fig. 5 is a schematic structural diagram of a locking component according to an embodiment of the present invention. If the guide surface 210a1 is curved, the guide surface 210a1 may transition directly to the active surface 210a3 without providing the end surface 210a2 between the guide surface 210a1 and the active surface 210a 3.

Fig. 6 is a schematic structural diagram of a door cover according to a first embodiment of the present invention. As shown in fig. 6, the door cover 15 is connected to the main body 100 of the image forming apparatus through a hinge shaft 11, and the door cover 15 performs opening and closing of the door cover 15 by rotation about the hinge shaft 11. Two pulling members are symmetrically provided on the inner surface of the door cover 15 corresponding to the locking members at both ends of the process cartridge 200. In describing the structures of the pulling member, the locking member, and the operational relationship between the pulling member and the locking member, only the pulling member and the locking member at one end of the process cartridge 200 will be described as an example.

The pulling member includes a connection portion 31 and a working portion 30, wherein the connection portion 31 is connected to the inner surface of the door cover 15, and the working portion 30 is provided with a working end for contacting the working surface 210a3 and applying a pulling force.

The above-mentioned pulling member functions to move to the side of the locking member facing away from the opening of the main body 100 during the closing of the door 15, and to apply a force to the locking member in the direction of the opening during the opening of the door 15 to pull out the process cartridge 200 from the main body 100, and therefore, the implementation thereof is various based on the functions of the pulling member, and the present embodiment provides a specific structure of the pulling member. Fig. 7 is a schematic structural diagram of a pulling member according to a first embodiment of the present invention, and fig. 8 is an installation view of the pulling member according to the first embodiment of the present invention. As shown in fig. 7 and 8, the pulling member includes a connecting portion 31 and an acting portion 30, wherein the connecting portion 31 may specifically include a fixing portion 31a, a pull rod 30a and a first elastic member 32a, and the fixing portion 31a is disposed on an inner surface of the door cover 15, may be integrated with the door cover 15, and may be fixed to the inner surface of the door cover 15 by welding, riveting, screwing, or the like. The pull rod 30a is disposed on the fixing portion 31a, the pull rod 30a is connected to the operating portion 30, and both ends of the first elastic member 32a are respectively abutted against the fixing portion 31a and the pull rod 30 a.

The pull rod 30a swings relative to the fixing portion 31a under the action of the guide surface 210a1, that is, during the closing process of the door 15, the acting portion 30 contacts with the guide surface 210a1, and drives the pull rod 30a to swing relative to the fixing portion 31a under the guide of the guide surface 210a1 and slide along the guide surface 210a1 until the pull rod is separated from the guide surface 210a 1. After the pull rod 30a is disengaged from the guide surface 210a1 and is no longer subjected to the guiding force of the guide surface 210a1, the pull rod 30a is rebounded and returned by the first elastic piece 32a, and the action part 30 is located on one side of the action surface 210a3 in the X direction.

There are various ways of implementing the swinging of the pull rod 30a relative to the fixing portion 31a by the guide surface 210a1, and the first elastic member 32a may be a spring or a torsion spring. One specific approach is listed below:

the lever 30a includes a rotation shaft portion 30a1 and an abutment portion 30a2, and the abutment portion 30a2 is connected between the rotation shaft portion 30a1 and the action portion 30. The contact portion 30a2 and the rotation shaft portion 30a1 may be at a set angle of 90 °. The rotating shaft 30a1 is cylindrical, and the fixing portion 31a is provided with a round hole 31a1 for passing through the rotating shaft 30a1 and a stopper 31a2 for limiting the rotation angle of the lever 30 a.

The assembling relationship between the acting part 30, the fixing part 31a, the pulling rod 30a and the torsion spring will be described in detail below.

As shown in fig. 8, the rotating shaft portion 30a1 of the lever 30a is inserted into the circular hole 31a1 of the fixing portion 31a, and the lever 30a and the operating portion 30 as a whole can rotate around the rotating shaft portion 30a 1.

The torsion spring 32a is inserted into the fixed post 31a3, and one end thereof abuts against the inner wall of the door cover 15, and the other end thereof abuts against the abutting portion 30a2 of the pull rod 30 a. In order to prevent the end of the torsion spring 32a from wobbling in the Y direction at the abutting portion 30a2, an abutting groove 30a4 is provided at a position where the abutting portion 30a2 and the end of the torsion spring 32a come into contact, the abutting groove 30a4 extends in the longitudinal direction of the abutting portion 30a2, and the end of the torsion spring 32a is caught in the abutting groove 30a 4. When the lever 30a is rotated about the rotation shaft portion 30a1 by an external force, the torsion spring 32a is pressed by the lever 30a, and its end moves in the length direction of the rotation shaft portion 30a1 in the abutment groove 30a 4.

The fixing portion 31a is further provided with a stopper 31a2 for limiting the rotation angle of the pull rod 30 a. The stopper 31a2 and the torsion spring 32a are respectively located on both sides of the pull rod 30 a. The torsion spring 32a exerts an elastic force on the abutting portion 30a2 of the pulling rod 30a, so that it rotates in the Z direction and eventually abuts against the stopper 31a 2. When the acting part 30 is acted by a force acting in the direction opposite to the Z direction and the acting force is large enough, the acting part 30 drives the pull rod 30a to deflect in the direction opposite to the Z direction.

When two pulling members are symmetrically arranged on the door cover 15, the two pulling members are of a symmetrical structure, and fig. 9 is an installation view of the pulling member on the other side provided by the first embodiment of the present invention. Fig. 9 shows the structure of the pulling member arranged symmetrically to fig. 7 and 8.

Fig. 10a and 10b are a top view and a left side view of the pulling member and the locking member engaged with each other during the closing of the door according to the first embodiment of the present invention, and fig. 11 is a top view of the pulling member and the locking member engaged with each other after the closing of the door according to the first embodiment of the present invention. As shown in fig. 10a and 10b, the operational relationship between the locking member and the pulling member will be described in detail below, taking the locking member and the pulling member located at one end of the process cartridge as an example.

As shown in fig. 10a, the process cartridge 200 has been mounted in the main body 100, and with the door cover 15 closed, when the pulling member and the locking member have not come into contact, the positional relationship of the pulling member with respect to the door cover 15 is as shown by the broken line in fig. 10a, and the pulling member is located in front of the locking member, that is, in the X direction, there is an overlap of the pulling member and the locking member.

When the operating portion 30 of the pulling member contacts the guide surface 210a1 of the locking member as the door 15 rotates relative to the body 100, the guide surface 210a1 applies a force F to the operating portion 30₁Acting force F₁In a direction perpendicular to the surface of the guide surface 210a 1. Since the guide surface 210a1 is an inclined surface or a curved surface, the force F₁Having a component F in the direction opposite to the Z direction_1ZWhen force component F_1ZWhen sufficiently large, under the component force F_1ZThe tie rod 30a and the action portion 30 are deflected in the direction opposite to the Z direction. At the same time, as the drawbar 30a deflects, the abutment 30a2 in the drawbar 30a compresses the torsion spring 32a, causing the end of the torsion spring 32a to move within the abutment slot 30a 4.

As the door 15 continues to rotate, the pull rod 30a and the acting portion 30 will continue to rotate in the reverse direction of the Z direction under the action of the guide surface 210a1 until the acting portion 30 and the guide surface 210a1 are out of contact. Thereafter, the operation portion 30 slides on the end surface 210a2 for a distance, and finally comes out of contact with the locking member, and returns to the original state, i.e., the direction of the broken line in fig. 10a, by the elastic force of the torsion spring 32a, but the position of the operation portion 30 is no longer located in front of the guide surface 210a1 but located behind the guide surface 210a1, and as shown in fig. 11, the operation portion 30 is located behind the locking member as viewed in the X direction, and reaches the locking position.

Fig. 12 is a schematic view of the door opening process according to the first embodiment of the present invention. As shown in fig. 12, when the user opens the door 15 by holding the top of the door 15, a force Fx is applied to the top of the door 15, and as the door 15 rotates, the acting portion 30 contacts the acting surface 210a3 of the locking member and applies a pulling force F to the acting surface 210a3, the direction of the pulling force F is substantially the same as the direction in which the process cartridge 200 is taken out from the main body 100 (i.e., the direction opposite to the X direction), and when the pulling force F applied to the acting surface 210a3 by the acting portion 30 is sufficiently large, the pulling rod 30a pulls the process cartridge 200 to move in the direction in which the process cartridge is taken out. By the lever principle, the acting force F of the door 15 to the process cartridge 200 is larger than the acting force Fx of the user to the door 15, thereby achieving the purpose of taking out the process cartridge 200 from the main body 100 with a small force.

In fig. 12, a broken line L1 is a movement path of a point 30a5 of the action portion 30, which is farthest from the axial center of the hinge shaft 11 when the door cover 15 is rotated; the broken line L2 is a moving path of the lowest point of the action surface 210a3 in the Y direction within the main body 100 during the process in which the process cartridge 200 is pulled out of the main body 100 by the pull lever 30 a; the position of the intersection of the broken lines L1 and L2 is a position where the action portion 30 and the process cartridge 200 are out of contact, i.e., a position where the movement of the process cartridge 200 by the pulling lever 30a is ended.

When the door cover 15 is rotated to the broken line position in fig. 12, the contact point of the acting portion 30 and the acting surface 210a3 is located at the intersection of the broken lines L1 and L2. The action portion 30 and the locking member of the process cartridge 200 are out of contact, the movement of the process cartridge 200 is stopped, and the distance by which the process cartridge 200 is moved by the pull rod 30a is maximum L.

Further, during the movement of pulling the process cartridge 200 by the pull lever 30a, the action portion 30 may move in the reverse direction of the Z direction on the action surface 210a3 due to vibration, inclination of the process cartridge 200, or the like, causing the locking member to come out of contact. To prevent this, the present embodiment opens the action grooves on the action surface 210a3, that is: the active surface 210a3 is configured to be concave. When the process cartridge 200 is pulled by the pull rod 30a to move, the action portion 30 is located in the concave surface, and the contact point with the action surface 210a3 is located on the bottom surface of the concave surface and applies a force F toward the opening direction, thereby preventing the action portion 30 from deflecting in the Z direction.

In addition, in order to pull the process cartridge 200 to move with as small a pulling force as possible, it is necessary to keep the direction of the pulling force F substantially in the same direction as the moving direction of the process cartridge 200 as much as possible. As shown in fig. 6, 7, and 12, in the present embodiment, by providing the action part 30 in a hook-shaped configuration, the action surface 210a3 is kept substantially perpendicular to the direction in which the process cartridge 200 is taken out, so that when the process cartridge 200 is pulled and moved by the pull rod 30a, the contact between the action part 30 and the action surface 210a3 is point contact, and the point contact moves up and down in the Y direction on the action surface 210a 3. The direction of the tensile force F applied to the action surface 210a3 is substantially perpendicular to the action surface 210a3, i.e., substantially in the same direction as the moving direction of the process cartridge 200.

The pulling member and the locking member in the present embodiment are also applicable to the image forming apparatus in which the door cover 15 shown in fig. 2 is provided above the main body 100. However, since the process cartridge 200 is moved in the longitudinal direction when the door 15 is opened, and after the process cartridge 200 is moved a certain distance in the main body 100, the process cartridge 200 may swing in the Y direction without a limit function of the guide rail on the inner wall of the main body 100, thereby coming out of contact with the action part 30 and falling off accidentally. In order to prevent the above, some modifications are required to the structure of the acting portion 30 or the locking member of the process cartridge 200.

Fig. 13a and 13b are schematic views illustrating a process cartridge being longitudinally pulled up by a pulling member according to a first embodiment of the present invention. As shown in fig. 2, 13a and 13b, the door cover 15 is located at the top of the main body 100, and the process cartridge 200 moves in the longitudinal direction within the main body 100. When the door cover 15 is closed, the operational relationship between the pulling member and the locking member is the same as the operational relationship between the pulling member and the locking member described above. Except for the process of opening the door cover 15, when the door cover 15 is opened, the acting portion 30 contacts the acting surface 210a3 of the process cartridge 200 and pushes the process cartridge 200 to move in the reverse direction of the X direction. In order to prevent the process cartridge 200 from being suddenly dropped during the process of being pulled up by the pull rod 30a of the process cartridge 200, as shown in fig. 13b, the radius of the dotted line L1 may be increased, or the length of the action surface 210a3 of the locking member in the Y direction may be shortened, so that after the process cartridge 200 is pulled up by the pull rod 30a by a certain distance, the contact point of the action part 30 and the action surface 210a3 moves in the Y direction on the action surface 210a3, and the locking member falls into the hook structure of the action part 30 over the edge of the action surface 210a3 in the Y direction before the guide rail on the inner wall of the main body 100 loses the limit action on the process cartridge 200. After the door 15 is opened, the user only needs to manually remove the process cartridge 200 from the action portion 30.

The structure of the pulling member and the locking member in the present embodiment can be realized in various ways by those skilled in the art. Fig. 14a and 14b are schematic structural views of locking members distributed at different positions on a process cartridge according to an embodiment of the present invention. As shown in fig. 14a, the locking members may be two, each provided on the front side 201 of the process cartridge 200, such as a first locking member 210a and a second locking member 210b in fig. 14 a. Correspondingly, two pull members are provided on the door cover 15, the positions of which correspond to the respective locking members.

Alternatively, as shown in fig. 14b, the number of the locking members is one, and is provided at an intermediate position of the front side 201 of the process cartridge 200, as the third locking member 210c in fig. 14 b. Accordingly, the door cover 15 is provided with a pulling member corresponding in position to the locking member, which also satisfies the above-mentioned requirements.

Of course, those skilled in the art can easily conceive of providing a plurality of locking members on the process cartridge front side 201 and, accordingly, a plurality of acting members on the door cover 15.

Fig. 15 is a schematic structural view of another locking member and a pulling member according to an embodiment of the present invention. As shown in fig. 15, in another locking member, the guiding surface can be set to be a plane, and the position of the limiting block is changed to enable the pull rod to tilt to a certain angle towards one side of the torsion spring in advance under the action of the torsion spring and the limiting block, so that the purpose that the pull rod deflects to one side of the torsion spring when the action part contacts the guiding surface can also be achieved.

The connecting portion of the pulling member is integrally formed with the door cover 15 by injection molding, or fixedly connected by means of screws, welding, or the like, and the position of the connecting portion with respect to the door cover 15 is fixed.

Example two

Unlike the above-described embodiments, the present embodiment employs another structure of the pulling member and the locking member so that the process cartridge 200 can be taken out of the main body 100 with the opening of the door 15.

Fig. 16 is a schematic structural view of a process cartridge according to a second embodiment of the present invention, and fig. 17 is a schematic structural view of a lock member according to the second embodiment of the present invention. As shown in fig. 16 and 17, two locking members are symmetrically provided on both end surfaces in the longitudinal direction of the process cartridge 200. Taking only one locking member as an example, the locking member includes a protrusion 220c, a second elastic member 220b, and a slider 220 a. Wherein, be equipped with the spout in the arch 220c, second elastic component 220b sets up in the spout, and the one end butt of second elastic component 220b is in the bottom of spout, and the other end butt is in the one end of slider 220a, and the other end of slider 220a is provided with guide surface 210a3, then slider 220a can slide in the spout, stretches into in the spout or stretches out the spout. The second elastic member 220b may be fixed to the bottom of the sliding chute, or, as shown in fig. 19, a fixing post 220a5 is provided at one end of the slider 220a opposite to the Y direction, and the second elastic member 220b is fixed to the slider through the fixing post 220a 5. The guide surface 210a1 on the sliding block 220a is used for contacting with the action part 30, and under the action of the force applied by the action part 30, the sliding block 220a retracts into the sliding chute; when the force applied by the acting portion 30 is removed, the slider 220a is extended out of the slide slot by the second elastic member 220 b.

Specifically, the inner wall of the slide groove is provided with a guide groove, and the slider 220a is fixed in the protrusion 220c of the locking member through the guide groove and is movable in the Y direction in the protrusion 220 c. The second elastic member 220b is disposed on the upper surface of the slider 220a, and the other end thereof abuts against the upper surface of the protruding slide groove. Preferably, the second elastic member in this embodiment is a spring. Under the action of the elastic force of the spring and the gravity of the slider 220a, the slider 220a naturally moves to the lowest point position in the Y direction.

Fig. 18 is a schematic structural diagram of a door cover according to a second embodiment of the present invention. As shown in fig. 18, two pulling members are symmetrically provided on the door cover 15 corresponding to the locking members on both sides of the process cartridge 200.

The following description will be given taking a locking member at one end of the process cartridge and a corresponding pulling member as examples.

As shown in fig. 18, the pulling member includes: a connecting portion 31 and an acting portion 30, wherein the connecting portion 31 is connected to the inner surface of the door cover 15, and the acting portion 30 is provided with an acting end for contacting with the acting surface 210a3 and exerting a pulling force.

Similar to the structure of the action part 30 in the first embodiment, the action part 30 in the present embodiment is also configured to have a hook-shaped structure.

Unlike the first embodiment, the connection portion 31 in the embodiment of the present invention is fixedly connected to the inner wall of the door cover 15, that is, the position of the connection portion 31 relative to the door cover 15 is fixed. The connecting portion 31 and the inner wall of the door cover 15 may be integrally molded, or the connecting portion 31 and the door cover 15 may be fixed together by welding, screws, or the like.

Fig. 19 is an installation view of a locking member according to the second embodiment of the present invention. As shown in fig. 19, the side surface of the setting slider 220a in the X direction is the acting surface 210a3, one surface in the Y direction is the guide surface 210a1, the opposite surface in the Y direction is the top surface 220a3, and one surface in the Z direction is the side surface 220a 2. The guide surface 210a1 of the slider 220a may be a slope or a curved surface, the slope direction of which is the same as the Y direction.

A guide groove is arranged on the inner wall of the sliding chute, a guide post 220a4 is arranged on the side surface 220a2 of the sliding block 220a, and the guide post 220a4 can slide in the guide groove. Fig. 20 is a schematic structural view of a guide groove in a locking member according to a second embodiment of the present invention. As shown in fig. 20, the guide groove specifically includes a mounting groove 220c1 and an avoiding groove 220c2 that are perpendicular to each other and communicate with each other, wherein the mounting groove 220c1 extends to the end of the protrusion 220c, and the end of the avoiding groove 220c2 is closed. The mounting groove 220c1 and the avoidance groove 220c2 both extend in a direction perpendicular to the longitudinal direction of the process cartridge 200, and preferably, as shown by the solid line in fig. 20, the avoidance groove 220c2 is parallel to the Y direction, and the mounting groove 220c1 and the avoidance groove 220c2 are perpendicular to each other. As shown in fig. 19 and 20, the chute has two openings, namely: an opening provided in the Y direction of the projection 220c, referred to as a first opening 220c 4; and an opening provided in the projection 220c opposite to the X direction, referred to as a second opening 220c 5. The mounting groove 220c1 extends from the first opening 220c4 in the X direction and into the protrusion 220c, the bypass groove 220c2 extends from the end of the mounting groove 220c1 in the Y direction, and the end of the bypass groove 220c2 is closed.

The assembling relationship of the protrusion 220c, the slider 220a and the second elastic member 220b is: the guide surface 210a1 of the slider 220a faces downward, the acting surface 210a3 faces the direction X, and is installed into the sliding slot of the protrusion 220c from the first opening 220c4, and as the slider 220a moves in the sliding slot of the protrusion 220c, as shown in fig. 20, the guide post 220a4 of the slider 220a enters the installation slot 220c 1. The movement of the slider 220a in the Y direction is restricted by the mounting groove 220c 1.

When the guide post 220a4 moves to the end of the mounting groove 220c1 in the X direction, the active surface 210a3 contacts the inner wall of the slide groove in the X direction, and the movement of the slider 220a in the X direction is stopped. Then, the slider 220a is moved in the Y direction, and the guide pole 220a4 enters the escape groove 220c2 and moves in the Y direction in the escape groove 220c2, and at this time, the movement of the slider 220a in the X direction is restricted. When the guide post 220a4 contacts the tip of the escape groove 220c2 in the Y direction, the movement of the slider 220a in the Y direction is stopped.

Finally, the second elastic member 220b is fitted between the top surface 220a3 of the slider 220a and the inner wall of the chute in the reverse direction of the Y direction. Specifically, a fixing post 220a5 may be disposed on the top surface 220a3 of the slider 220a, one end of the second elastic element 220b is inserted through the fixing post 220a5, and the other end of the second elastic element abuts against an inner wall of the sliding chute along the Y direction. The slider 220a is kept at the lowest position when not being subjected to other external forces by the elastic force of the second elastic member 220b on the slider 220 a.

Of course, as shown by the dotted line in fig. 20, the avoiding groove is parallel to the Y direction, and the included angle between the installation groove and the avoiding groove may be set to other angles, which can also satisfy the above requirements.

In addition, with the above embodiment, it is not difficult to conceive of providing the guide grooves on both side walls of the chute in the Z direction to increase the stability when the slider slides.

Alternatively, as shown in fig. 21, a through hole 220c3 is provided in the projection in the Y direction, an escape groove 220c2 is provided in the inner wall of the through hole 220c3, and one end of the escape groove 220c2 in the Y direction is closed. The slider 220a is provided with a guiding post 220a4 on a side wall perpendicular to the Y direction, and when the slider 220a is installed in the through hole 220c3 along the Y direction, the positioning post 220a4 can move to the closed end of the avoiding groove 220c2 along the Y direction in the avoiding groove 220c 2. The slider 220a is further provided with a second elastic member 220b in the direction opposite to the Y direction, and after the second elastic member 220b is mounted on the slider 220c, an opening at one end of the through hole 220c3 in the direction opposite to the Y direction is closed by a cover plate 220d, the cover plate 220c3 may be connected to the protrusion by means of a screw, welding, or the like, and one end of the second elastic member 220b abuts on the slider and the other end abuts on the cover plate. Through the mechanism, the slider can also move along the Y direction.

After the sliding block 220a, the second elastic member 220b and the protrusion 220c are integrally installed, when the guiding surface 210a1 of the sliding block 220a is subjected to an external force acting in the direction opposite to the Y direction, and the magnitude of the external force is greater than the resultant force of the elastic force of the second elastic member 220b, the friction force of the sliding chute on the sliding block 220a and the gravity of the sliding block 220a, the external force pushes the sliding block 220a to move in the direction opposite to the Y direction. When the external force disappears, the sliding block 220a will return to the lowest point position under the action of the second elastic element 220 b.

The structure and the operation principle of the pulling member and the locking member will be described in detail below.

Fig. 22 is a left side view of the interaction of the pulling member and the locking member during the closing of the door as provided by the second embodiment of the present invention. As shown in FIG. 21, when the door 15 is closed, the acting part 30 will contact the guiding surface 210a1 of the slider 220a and the acting part 30 will apply a force F to the guiding surface 210a1 as the door 15 rotates₂Acting force F₂In a direction perpendicular to the guide surface 210a 1. Since the guide surface 210a1 is inclined in the Y direction, the acting part 30 acts on the slider 220a with the acting force F₂Having a component F in the Y direction_2yAnd a component of force F_2yIn the direction opposite to the direction Y when the component F_2yIs larger than the resultant force of the elastic force of the second elastic member 220b, the friction force of the sliding chute to the sliding block 220a and the gravity of the sliding block 220a, and the external force F_2yThe slider 220a is moved in a direction opposite to the Y directionMoves upward by a predetermined distance to escape the action portion 30. As the door cover 15 is rotated, the slider 220a is moved upward until the acting portion 30 passes the lowest point of the slider 220a in the Y direction and is out of contact with the slider 220a, and the slider 220a returns to the initial position by the second elastic member spring 220 b.

In this embodiment, the process of moving the process cartridge 200 by the pulling member is basically the same as the process of moving the process cartridge 200 by the pulling member in the first embodiment, and the description thereof is omitted.

Fig. 23 is a schematic structural view of another pulling member according to a second embodiment of the present invention, and fig. 24 is a schematic structural view of the interaction between the pulling member shown in fig. 23 and a locking member in a process cartridge. The action part 30 of the present embodiment can be configured as shown in fig. 23 and 24, in addition to the hook-shaped structure in the first embodiment, and the above requirements can be met.

In addition, the length direction of the sliding groove is inclined by a certain angle along the X or Z direction, so that the moving direction of the sliding block in the sliding groove is not parallel to the Y direction, and the requirement can be met.

The same applies to the image forming apparatus shown in fig. 2 in which the door is provided above the main body, and the process cartridge 200 is taken out in the same manner as in the first embodiment.

EXAMPLE III

Unlike the second embodiment, the present embodiment provides another locking member to enable the process cartridge 200 to be smoothly taken out of the main body 100 as the door 15 is opened.

Fig. 25 is a schematic structural view of a process cartridge according to a third embodiment of the present invention, and fig. 26 is a schematic structural view of a locking member in fig. 25. As shown in fig. 25 and 26, the process cartridge 200 is provided with two locking members symmetrically on both left and right sides, and similarly to the second embodiment, the present embodiment also provides a locking member including: a protrusion 220c, a slider 220a, and a second elastic member 220 b. Unlike the second embodiment, the direction of the relative movement of the slider 220a and the projection 220c is along the Z direction, that is, along the length direction of the process cartridge 200.

A sliding groove is provided in the protrusion 220c, and a part of the slider 220a is located in the sliding groove and is movable in the Z direction along the sliding groove. The second elastic member 220b is located between the slider 220a and the inner wall of the slide groove, and applies an elastic force in the Z direction to the slider 220 a.

The structure and operation of one of the lock mechanisms will be described in detail below by way of example.

Fig. 27 is a structural view illustrating an installation structure of the locking member of fig. 25, and fig. 28 is a structural view illustrating a guide groove of fig. 27. As shown in fig. 27 and 28, the inside of the process cartridge 200 is provided with a chute, in which a rectangular opening 240c3 is also provided in the Z direction. The sliding groove is further provided with a guide groove on the side wall along the X direction or the opposite direction of the X direction, and the embodiment will be described by taking the example of providing the guide groove along the opposite direction of the X direction.

The guide groove specifically includes a mounting groove 240c1, a communication groove 240c4, and an avoidance groove 240c2 connected in sequence in a U-shape, wherein one end of the mounting groove 240c1 in the length direction of the process cartridge 200 extends to the end of the protrusion 220c, and the end of the avoidance groove 240c2 is closed. Specifically, as shown in fig. 27 and 28, the extending directions of the mounting groove 240c1 and the avoiding groove 240c2 are substantially the same as the Z direction, and the mounting groove 240c1 is located above the avoiding groove 240c 2. One end of the mounting groove 240c1 in the Z direction is open, that is: the mounting groove 240c1 extends from the opening 240c3 in the Z direction, the tip of the mounting groove 240c1 communicates with the communication groove 240c4, the communication groove 240c4 extends in the Y direction, the tip of the communication groove 240c4 communicates with the escape groove 240c2, and the escape groove 240c2 extends in the Z direction and is closed. Of course, as shown by the broken line in fig. 28, the escape groove 240c2 is parallel to the Z direction. The mounting slots 240c1 are provided at other angles to meet the above requirements.

The surface of the slider 220a along the direction opposite to the Z direction is a rectangular surface, and the width of the rectangular surface along the X direction is less than or equal to the width of the opening 240c3 along the X direction; the length a of the opening 240c3 in the Y direction is greater than the length b of the slider 220a in the Y direction. Preferably, the second elastic member 220b of the present embodiment is a spring. A fixing post 220a5 is provided on the side of the slider 240a opposite to the Z direction for fixing the spring. The surface of the slider 220a on one side in the Z direction is the guide surface 210a1, and the guide surface 210a1 may be an inclined surface or a curved surface, and the inclined direction thereof is the same as the X direction. The surface of the slider 220a facing the X direction is an active surface (not shown in fig. 26). On the side surface of the slider 220a opposite to the X direction, a guide post 220a4 is further provided for guiding the slider 220a to be mounted in the slide groove and restricting the moving track of the slider 220 a.

The assembly relationship of the sliding groove, the second elastic member 220b and the sliding block 220a is as follows: the second elastic piece 220b is firstly installed on the fixed column 220a5, one side of the sliding block 220a, which is provided with the fixed column 220a5, faces the sliding groove, the sliding block 220a is inserted into the sliding groove, the guide column 220a4 and the installation groove 240c1 are kept on the same horizontal line, and as the sliding block 220a moves in the sliding groove, the guide column 220a4 on the sliding block 220a enters the installation groove 240c1 and moves in the installation groove 240c 1. When the guide post 220a4 moves to the end of the mounting groove 240c1, the slider 220a is moved along the communication groove 240c4 until the slider 220a reaches the end of the communication groove 240c4, the surface of the slider 220a on one side in the Y direction comes into contact with the inner wall of the slide groove on one side in the Y direction, and the slider 220a stops moving in the Y direction, at which time the guide post 220a4 and the escape groove 240c2 are on the same horizontal plane.

The action of the external force on the guide surface 210a1 in the slider 220a is cancelled, the slider 220a will move in the Z direction under the action of the second elastic element 220b, and the guide column 220a4 enters the escape groove 240c 2. Since the movement of the guide post 220a4 in the Y direction within the escape groove 240c2 is restricted, the movement of the slider 220a in the Y direction is also restricted. When the guide post 220a4 moves to the end of the escape slot 240c2 in the Z direction, the guide post 220a4 is blocked and the slider 220a stops moving.

Of course, the guide groove in the present embodiment may be configured as the guide groove in the second embodiment.

When the guide surface 210a1 of the slider 220a receives an external force, the external force has a component in the direction opposite to the Z direction, and if the component is greater than the resultant force of the elastic force of the second elastic member 220b and the friction force of the sliding chute against the slider 220a, the slider 220a contracts in the direction opposite to the Z direction.

Two pulling members are also symmetrically provided on the inner wall of the door 15 corresponding to the two locking members provided on both sides of the process cartridge 200. The structure of the pulling member is similar to that of the second embodiment, and the structure thereof is shown in fig. 18 and 22.

Fig. 29 is a schematic structural view of interaction of a locking member and a pulling member in a process cartridge according to a third embodiment of the present invention. As shown in fig. 29, one of the pulling members and the corresponding locking member will be described as an example. When the door 15 is closed, as the door 15 rotates, the acting part 30 contacts the guide surface 210a1 and applies a force perpendicular to the guide surface 210a1 to the guide surface 210a1, and the slider 220a moves in the direction opposite to the Z direction by a distance m under the force, thereby avoiding the acting part 30. As the door cover 15 is rotated, the distance of the reverse movement of the slider 220a in the Z direction is increased until the acting portion 30 passes the guide surface 210a1 of the slider 220a, is out of contact with the slider 220a, and the slider 220a returns to the initial position by the second elastic member 220 b.

In this embodiment, the process of moving the process cartridge by pulling the pulling member is substantially the same as the process of moving the process cartridge by pulling the pulling member in the first embodiment, and details thereof are not repeated.

Fig. 30 is a schematic structural view of another process cartridge according to a third embodiment of the present invention, and fig. 31 is a schematic structural view of a locking member of another process cartridge according to a third embodiment of the present invention. As shown in fig. 30 and 31, it is also easy for those skilled in the art to arrange the guide surface 210a1 of the slider 220a on one surface of the slider 220a in the Z direction, and the inclination direction is the same as the Y direction according to the content of the present embodiment. In addition, the length direction of the sliding groove inclines for a certain angle along the Y or X direction, so that the sliding direction of the sliding block in the sliding groove along the sliding groove is not parallel to the Z direction, and the requirement can be met.

Example four

The present embodiment provides a locking member of another structure that enables the process cartridge 200 to be taken out of the main body 100 with the door 15 opened.

Fig. 32 is a schematic structural view of a process cartridge according to a fourth embodiment of the present invention, and fig. 33a and 33b are schematic structural views illustrating an installation structure of a locking member provided in the process cartridge according to the fourth embodiment of the present invention. As shown in fig. 32, the process cartridge 200 is symmetrically provided with two locking members, such as a fourth locking member 240 and a fifth locking member 250 shown in fig. 32, on both left and right sides. Since the fourth locking member 240 and the fifth locking member 250 are symmetrically disposed, the structure of the locking member will be described below by taking only the fourth locking member 240 as an example. As shown in fig. 33a and 33b, the fourth locking member 240 includes a stopper shaft 240d1 disposed at an end of the process cartridge 200 in the longitudinal direction, a stopper 240d2 fitted around the stopper shaft 240d1 and rotatable with respect to the stopper shaft 240d1, and stoppers 240d3 and 240d4 disposed at the end of the process cartridge 200 in the longitudinal direction and respectively disposed at both sides of the stopper 240d 2.

The stopper 240d2 has a circular hole 240d5 therein, and the stopper 240d2 is fixed on the stopper shaft 240d1 through the circular hole 240d5 and can rotate around the stopper shaft 240d 1. The stopper 240d2 is rotated relative to the stopper rotation shaft 240d1 when pushed by an external force, and cooperates with the pulling member to escape the action portion 30 of the pulling member. When the pulling member reaches the rear surface of the stopper 240d2, a force may be applied to the stopper 240d2 in a direction toward the door cover 15 to pull out the process cartridge 200.

Preferably, the present embodiment further employs a third elastic member 240d6, and a positioning post 240d7 is further provided at an end of the process cartridge 200 in the length direction, and the positioning post 240d7 is located between the stopper 240d2 and the stopper 240d 3. The third elastic member 240d6 may be a torsion spring, the torsion spring is disposed on the positioning post 240d7, and one end of the torsion spring abuts against the stopper 240d3 and the other end of the torsion spring abuts against the stopper rod 240d 2. The side of the stopper 240d2 facing the body opening is the guide surface 210a1, and the side facing away from the body opening is the action surface 210a 3. The torsion spring abuts against the guide surface 210a1 of the stopper lever 240d2 and exerts an elastic force on the stopper lever 240d 2. The limiting block 240d4 is disposed on one side of the lever 240d2 along the X direction, and the elastic force of the torsion spring 240d6 on the lever 240d2 causes the lever 240d2 to rotate around the lever rotating shaft 240d1 along the M direction until the upper end of the lever 240d2 abuts against the limiting block 240dc4, and the lever 240d2 stops rotating. Under the action of the limiting block 240d4 and the torsion spring 240d6, the length direction of the stopper 240d2 is perpendicular to the X direction when no external force is applied. As shown in FIG. 33b, when the guide surface 210a1 of the stopper 240d2Is subjected to a force F in the X direction_nAct and an acting force F_nWhen large enough, the lower end of the stopper 240d2 rotates in the X direction about the stopper rotational shaft 240d 1.

Two pulling members are also symmetrically provided on the inner wall of the door 15 corresponding to the fourth and

fifth locking members

240 and 250 provided on the process cartridge 200. The structure of the pulling member is similar to that of the pulling member in the second embodiment, and the structure is shown in fig. 18, 24 and 29.

Fig. 34 is a schematic view showing the interaction between the locking member and the pulling member in the process cartridge according to the fourth embodiment of the present invention. Fig. 34 is a schematic structural view showing a fifth locking member, and as shown in fig. 34, the fifth locking member includes: the stop lever rotating shaft 250d1, the stop lever 250d2, the stop block 250d3, the limit block 250d4, the third elastic piece 250d6 and the positioning column 250d 7.

As the door cover 15 is closed, the operating portion 30 contacts the lower end of the stopper 250d2, and applies a force to the stopper 250d2 in the X direction, so that the stopper 250d2 rotates around the stopper shaft 250d1 in the M direction by a certain angle, thereby retreating the operating portion 30 until the operating portion 30 passes the lowest point of the stopper 250d2 in the Y direction, and is out of contact with the stopper 250d2, and the stopper 250d2 returns to the initial position.

Since the stopper 250d4 is disposed on one side of the stopper lever 250d2 in the X direction, when the process cartridge 200 is pulled by the pulling member to move, the point of contact between the operating portion 30 and the operating surface 210a3 moves up and down in the Y direction on the operating surface 210a3, and the operating portion 30 may contact the stopper 250d4, so that the angle between the direction of the force applied by the operating portion 30 to the process cartridge 200 and the direction of taking out the process cartridge 200 is too large, which may affect the taking out of the process cartridge 200. In order to prevent this, the stopper lever 250d2 may be configured as shown in fig. 34, in which a notch is formed on one side of the upper end in the X direction, and when the stopper lever 250d2 is in the initial state, the stopper 250d4 is located in the notch of the stopper lever 250d2, and the surface of the stopper 250d4 on one side in the X direction is flush with the acting surface 210a 3.

Of course, as in the first embodiment, the locking members in the second, third and fourth embodiments may be provided on the front side 201 of the process cartridge 200, and the pulling members may be provided on the door cover at positions corresponding to the locking members.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A process cartridge detachably mountable to an image forming apparatus including a main body provided with an opening and a door cover connected to the main body and openably closing the opening, characterized in that:

the processing box is provided with a locking component which is used for interacting with a pulling component on the door cover and promoting the processing box to move relative to the main body under the driving of the pulling component;

the locking component is provided with a guide surface and an acting surface, the guide surface is used for guiding the acting part in the drawing component to move to a position opposite to the acting surface of the locking component in the process of closing the door cover, so that the acting part in the drawing component is in contact with the acting surface in the process of opening the door cover, and acting force which is in the same direction as the taking-out direction of the processing box is applied to the acting surface to drive the processing box to move relative to the main body.

2. A process cartridge according to claim 1, wherein a guide surface on said lock member and said action surface are in opposite positions, said guide surface facing said opening.

3. A process cartridge according to claim 1, wherein said guide surface is an inclined surface or a curved surface.

4. A process cartridge according to claim 3, wherein an action groove is provided on the action surface, and the action portion of the pulling member is located in the action groove and applies a force toward the opening to a bottom surface of the action groove in a process of pulling the process cartridge to move.

5. A process cartridge according to claim 1, wherein said locking member comprises: the sliding groove is internally provided with a sliding block and a second elastic piece, one end of the second elastic piece is abutted to the bottom of the sliding groove, the other end of the second elastic piece is abutted to one end of the sliding block, and the other end of the sliding block is provided with the guide surface.

6. A process cartridge according to claim 5, wherein a guide groove is provided on an inner wall of said slide groove, and a guide post slidable along said guide groove is provided on said slider.

7. A process cartridge according to claim 6, wherein projections are provided at both ends in a longitudinal direction of the process cartridge, the slide groove is provided in the projections, the guide groove includes a mounting groove and an avoiding groove which are communicated with each other and set to a set angle, the mounting groove extends to an opening of the slide groove, an end of the avoiding groove is closed, and the mounting groove and the avoiding groove extend in directions perpendicular to the longitudinal direction of the process cartridge.

8. A process cartridge according to claim 6, wherein projections are provided at both ends in a longitudinal direction of the process cartridge, the sliding groove is a through hole in the projection perpendicular to the longitudinal direction of the process cartridge, one end of the through hole is closed by an end cap, the guide groove is an avoiding groove having one end closed and the other end extended to an opening of the through hole, and an extending direction of the avoiding groove is perpendicular to the longitudinal direction of the process cartridge.

9. A process cartridge according to claim 8, wherein said end cap closes said through hole by means of a screw or welding or sticking.

10. A process cartridge according to claim 6, wherein said guide groove includes a mounting groove, a communicating groove and an avoiding groove which are connected in sequence in a U-shape, said mounting groove extends to an opening of said sliding groove toward one end in a length direction of said process cartridge, an end of said avoiding groove is closed; the guide post can slide along the avoiding groove.

11. A process cartridge according to claim 7, 8 or 10, wherein said second elastic member is a spring.

12. A process cartridge according to claim 1, wherein said locking member comprises: set up in the pin pivot of handling box length direction's tip, cover establish in the pin pivot and can for pin pivot pivoted pin and set up in just be located respectively on handling box length direction's the tip the dog and the stopper of pin both sides, the pin orientation open-ended side does the spigot surface deviates from the open-ended side does the action face.

13. A process cartridge according to claim 12, wherein a positioning post and a third elastic member are further provided at an end portion of the process cartridge in a longitudinal direction thereof, the positioning post is located between the stopper and the blocking lever, and one end of the third elastic member abuts against the blocking lever and the other end abuts against the stopper.

14. An image forming apparatus includes: a main body provided with an opening and a door cover connected to the main body and openably closing the opening, characterized by further comprising the process cartridge according to any one of claims 1 to 13; the door cover is provided with a pulling component which is used for interacting with a locking component on the processing box and driving the processing box to move relative to the main body.

15. The image forming apparatus according to claim 14, wherein the pulling member includes a connecting portion connected between an inner surface of the door cover and an acting portion for interacting with a locking member on a process cartridge.

16. The image forming apparatus according to claim 15, wherein the acting portion is a hook-shaped structure.

17. The image forming apparatus according to claim 15 or 16, wherein the connecting portion includes a fixing portion provided on an inner surface of the door cover, a pull rod provided on the fixing portion, and a first elastic member having both ends abutting on the door cover and the pull rod, respectively; the action portion is in the door closure in-process with the action portion is in slide on the action surface, the pull rod is in the locking part under the effect of spigot surface relative the fixed part swing, just the pull rod with after the spigot surface breaks away from reset under the effect of first elastic component, the action portion remove with the position that the action surface is relative.

18. The image forming apparatus according to claim 15 or 16, wherein the connecting portion is integrally formed with the door cover by injection molding or fixedly connected by a screw or welding, and a position of the connecting portion with respect to the door cover is fixed.

19. The image forming apparatus according to claim 17, wherein the lever includes: the rotating shaft part and the abutting part are connected between the rotating shaft part and the acting part and form a set angle with the rotating shaft part, and an abutting groove is formed in the abutting part; the fixing part is provided with a round hole used for penetrating the rotating shaft part and a limiting block used for limiting the rotating angle of the pull rod.

20. The image forming apparatus according to claim 19, wherein the fixing portion is further provided with a fixing post, the first elastic member is a torsion spring, the torsion spring is sleeved on the fixing post, one end of the torsion spring abuts against the door cover, and the other end of the torsion spring abuts against an abutting groove formed in the abutting portion.