CN216248769U - developer cartridge - Google Patents

Abstract

The application provides a developing box, which comprises a shell, a power assembly and a detected piece, wherein the shell comprises a first side wall and a second side wall which are opposite to each other along a first direction; the first side wall is provided with a guide piece, and the guide piece is arranged around the first axis; the guide piece comprises a supporting part and an avoiding part, and the abutting part can abut against the supporting part in the rotating process; the minimum distance between the end face of the avoiding part far away from the first side wall along the first axis and the first axis is larger than or equal to the distance between one end of the abutting part far away from the first axis and the first axis, so that the structure and the production process of the developing box are simplified, and the universality of the developing box suitable for different electrophotographic imaging devices can be improved by replacing the detected part.

Description

developer cartridge

【Technical field】

The utility model relates to the technical field of electrophotographic imaging equipment, in particular to a developing cartridge.

【Background technique】

Existing electrophotographic image forming apparatuses, such as laser printers, include a developing cartridge that is detachably mounted in the electrophotographic image forming apparatus. In order to determine the specific information such as the model, capacity and the newness of the developing cartridge, the electrophotographic image forming apparatus is usually provided with a detection mechanism, which can be analyzed according to the information such as the number of times the detection mechanism is touched by the developing cartridge and the time interval.

In a known developing cartridge, a detected mechanism is usually provided on the side of the developing cartridge, and the detected mechanism includes a detecting gear with a detecting protrusion. The side of the developing cartridge is also provided with a guide for supporting the detection gear, and the guide is also provided with a notch. During the detection of a new developing cartridge, the detection protrusion protrudes from the end face of the gear cover as the detection gear rotates and touches the detection mechanism provided in the electrophotographic image forming apparatus, so that the detection mechanism is located between the detection position and the non-detection position. move between. After the developing cartridge is detected, when the detecting gear rotates to the notch, the detected mechanism can fall into the notch, so that the detecting protrusion is retracted relative to the end face of the gear cover.

However, by adopting the above method, the structure of the developing cartridge and the production process thereof are complicated due to the need to create a notch on the guide member in advance.

【Content of utility model】

The present application provides a developing cartridge to solve the problem that the existing developing cartridge needs to have a notch on the guide member in advance, which leads to the complicated structure and production process.

An embodiment of the present application provides a developing cartridge, including a casing, a power assembly, and a detected member, the casing includes a first side wall and a second side wall opposite to each other along a first direction, and the power assembly is used for The detected member is driven to rotate around a first axis, and the detected member includes a detection portion and a contact portion; a guide member is provided on the first side wall, and the guide member is arranged around the first axis; the The guide member includes a support portion and an escape portion, and the abutting portion can abut on the support portion during the rotation; the end surface of the escape portion away from the first side wall along the first axis and the The minimum distance between the first axes is greater than or equal to the distance between the end of the abutting portion away from the first axis and the first axis.

Optionally, the detected piece is provided on the first side wall, and the minimum distance between the end face of the support portion away from the first side wall along the first axis and the first axis is less than The distance between one end of the abutting portion away from the first axis and the first axis.

Optionally, the support portion includes a first end surface and a second end surface that are away from the first side wall along the first axis, and the escape portion includes a distance away from the first side wall along the first axis. The third end face; the first end face, the second end face and the third end face are continuously connected in sequence, the first end face is an inclined surface or a curved surface, and along the direction close to the second end face, the first end face is The distance between one end face and the first side wall is gradually increased.

Optionally, the guide member further includes an accommodating portion disposed on the first side wall, and the accommodating portion is disposed close to an end of the support portion that is far away from the escape portion; the accommodating portion includes an end along the The first axis is away from the fourth end face of the first side wall, and the fourth end face is continuously connected with the first end face.

Optionally, a stopper is further provided on the first side wall, and the stopper is arranged at one end of the avoidance portion that is away from the support portion.

Optionally, a support shaft is further provided on the first side wall, the first axis is the central axis of the support shaft, and the guide member is arranged on the outer circumference of the support shaft around the first axis .

Optionally, the detected piece further includes a base and a rotating shaft, the base includes a first surface and a second surface that are opposite to each other along the first direction, and the rotating shaft penetrates through the base of the base. The middle part is arranged, the rotating shaft is sleeved on the support shaft; the detection part extends from the first surface in the opposite direction of the first direction, and the abutting part is from the side wall of the rotating shaft extending along the radial direction of the rotating shaft, and the abutting portion is located on the side where the second surface is located.

Optionally, the power assembly includes a gear unit, the detected member further includes a detection gear portion, and the detection gear portion meshes with the gear unit.

Optionally, the detection gear portion extends from the second surface along the first axis in a direction close to the first side wall; or, the detection gear portion extends outward from the outer edge of the base.

Optionally, the developing cartridge further includes an end cap, the end cap is connected to the first side wall, and an elastic member is further provided between the end cap and the detected piece; the end cap includes A third surface along the first axis away from the first side wall is provided with a through opening corresponding to a position of the detected piece on the third surface, and the detection portion can protrude from the through opening.

Optionally, the end cover is provided with a blocking part, and the detected part is provided with a stop part, when the detection part rotates around the first axis for a period of time, the stop part and the The blocking parts are in contact with each other to restrict the detection part from continuing to rotate.

Optionally, a blocking portion is provided on the end cover, one end of the blocking portion is connected between two opposite inner walls of the through opening, and the other end of the blocking portion extends toward the direction of the first side wall ; When the detection part rotates around the first axis for a period of time, the detection part abuts against the blocking part to restrict the detection part from continuing to rotate.

Optionally, the detected part is further provided with a stopper part, the stopper part is provided on the first surface and extends from the end of the detection part in a direction close to the first axis.

Optionally, the support portion further includes a fifth end face away from the first side wall along the first axis, the fifth end face is continuously connected with the second end face; the fifth end face is an inclined surface or a curved surface, And along the direction close to the second end surface, the distance between the fifth end surface and the first side wall gradually increases.

Optionally, one end of the fifth end face away from the second end face is continuously connected with the third end face.

Optionally, the guide member further includes an accommodating portion disposed on the first side wall, and the accommodating portion is disposed close to an end of the support portion away from the escape portion, and the accommodating portion includes an end along the The first axis is away from the fourth end face of the first side wall, and the fourth end face and the first side wall are parallel to each other.

Optionally, any one or more of the second end surface, the third end surface or the fourth end surface are parallel to the first side wall.

After adopting the above technical scheme, the beneficial effects are:

Compared with the prior art, in the developing cartridge provided by the present utility model, the power component can drive the detected piece to rotate, and during the rotation of the detected piece, the abutting portion first abuts on the supporting portion and moves along the The support part moves away from the end face of the first side wall, and then the abutting part continues to rotate. The part moves toward the direction close to the first side wall to complete the detection of the developing cartridge, which simplifies the structure of the developing cartridge and its production process compared with the existing gaps in the guide of the developing cartridge; at the same time, When different electrophotographic imaging devices detect the developing cartridge, there are differences in the time required for the detected part to rotate, which is embodied in the different distances between the end of the abutting portion away from the first axis and the first axis, so the user can pass Replacing the inspected part makes the developing cartridge suitable for different electrophotographic image forming apparatuses, thereby improving the versatility of the developing cartridge.

It is to be understood that the foregoing general description and the following detailed description are exemplary only and do not limit the application.

【Description of drawings】

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of the developing cartridge provided in Embodiment 1 of the present application.

FIG. 2 is a schematic exploded schematic diagram of a partial structure of the developing cartridge provided in Embodiment 1 of the present application.

FIG. 3 is another partial schematic exploded view of the structure of the developing cartridge provided in Embodiment 1 of the present application.

FIG. 4 is another partial structural exploded schematic diagram of the developing cartridge provided in Embodiment 1 of the present application.

FIG. 5 is a schematic structural diagram of a detected member in the developing cartridge provided in Embodiment 1 of the present application.

FIG. 6 is a schematic exploded schematic diagram of still another partial structure of the developing cartridge provided in Embodiment 1 of the present application.

FIG. 7 is a schematic partial structure diagram of the developing cartridge provided in Embodiment 1 of the present application when viewed along the first direction.

FIG. 8 is a schematic diagram of the matching relationship between the abutting portion and the guide member in the developing cartridge according to Embodiment 1 of the present application.

9 is a schematic diagram of another matching relationship between the abutting portion and the guide member in the developing cartridge provided in Embodiment 1 of the present application.

FIG. 10 is a schematic exploded schematic diagram of a partial structure of the developing cartridge provided in Embodiment 2 of the present application.

FIG. 11 is another partial schematic exploded view of the structure of the developing cartridge provided in Embodiment 2 of the present application.

FIG. 12 is a schematic structural diagram of a detected member in the developing cartridge provided in Embodiment 2 of the present application.

FIG. 13 is a schematic partial structure diagram of the developing cartridge according to Embodiment 2 of the present application when viewed along the first direction.

14 is a schematic exploded schematic diagram of a partial structure of the developing cartridge provided in Embodiment 3 of the present application.

FIG. 15 is a partially enlarged schematic view of the developing cartridge shown in FIG. 14 at A. FIG.

Reference number:

100. Development box;

1. Shell;

11, the first side wall; 12, the second side wall;

2. Developing roller;

21. The end of the developing roller shaft;

3. Power components;

31, a driving force receiving member; 311, a first gear portion; 312, a driving force receiving portion; 32, a developing roller gear; 33, a supply gear; 34, an idler gear; 341, a second gear portion; 342, a third gear portion 35, the stirring member gear; 351, the fourth gear part; 352, the fifth gear part; 36, the stirring member shaft end;

4. Elastic parts;

5. End cover;

51, the third surface; 52, the opening;

6. Supporting mechanism;

61, support shaft; 62, guide; 63, support part; 631, first end face; 632, second end face; 633, fifth end face; 64, avoidance part; 641, third end face; 65, accommodating part; 651 , the fourth end face; 66, the stopper;

7. Detected parts;

71, base; 711, first surface; 712, second surface; 72, through hole; 73, rotating shaft; 74, detection part; 741, sixth end face; 75, mounting part; 76, detection gear part; 77 , abutting part; 78, stop part;

8. Blocking part.

【Detailed ways】

In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be clear that the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the embodiments of this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" used in this paper is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time. B, there are three cases of B alone. In addition, the character "/" in this text generally indicates that the related objects are an "or" relationship.

Example 1

Referring to FIG. 1 , an embodiment of the present application provides a developing cartridge 100 , which includes a housing 1 , a power assembly 3 and a detected member 7 , and the housing 1 includes a first side wall 11 and a first side wall 11 and a first side wall facing each other along a first direction D1 . On the two side walls 12, the detected part is disposed on the first side wall 11, and the power component 3 is used to drive the detected part 7 to rotate around a first axis L1, the first axis L1 and the first direction D1 are parallel to each other. The developing cartridge 100 is detachably installed in an electrophotographic image forming apparatus (not shown in the figure) having a detection mechanism, the detection mechanism can be in contact with the detected member 7, and the detection mechanism can be contacted by the detected member 7. It moves between the detection position and the non-detection position, so that the detection mechanism detects the developing cartridge 100 to determine whether the developing cartridge 100 is new or the capacity of the developer stored in the developing cartridge 100 .

A developing roller 2, a supplying roller (not shown in the figure) and a stirring member (not shown in the figure) are sequentially arranged in the casing 1 along the second direction D2, and the developing roller 2, the supplying roller and the stirring member are respectively rotatable Connected between the first side wall 11 and the second side wall 12, and the developing roller shaft end portion 21, the supply roller shaft end portion (not shown in the figure) and the stirring member shaft end portion 36 are all provided from the first The side wall 11 protrudes out of the casing 1 in the opposite direction to the first direction D1. The first direction D1 is the longitudinal direction of the developing roller 2 , and the second direction D2 is the direction perpendicular to the normal direction of the first side wall 11 .

The housing 1 is also provided with a accommodating chamber for storing the developer, the developer stored in the accommodating chamber can be stirred by the rotation of the stirring member, and the supply roller can transmit the developer stored in the accommodating chamber to the developing roller 2, The photosensitive drum provided in the electrophotographic image forming apparatus can receive the developer from the developing roller 2, convert the electrostatic latent image formed on the surface of the photosensitive drum into a visible developer image, and transfer it to the surface of the printing medium.

Referring to FIG. 2 , the power assembly 3 includes a gear unit through which the developing roller 2 , the supplying roller, the stirring member and the detected member 7 can be driven to rotate.

Specifically, the gear unit includes a driving force receiver 31 , a developing roller gear 32 , a supply roller gear 33 , an idler gear 34 and a stirring member gear 35 , wherein the driving force receiver 31 and the idler gear 34 are rotatably provided on the first side On the wall 11, the developing roller gear 32 is provided on the developing roller shaft end 21, the supplying roller gear 33 is provided on the supplying roller shaft end, and the stirring member gear 35 is provided on the stirring member shaft end 36.

Referring to FIG. 3 , the driving force receiving member 31 includes a first gear portion 311 and a driving force receiving portion 312 , and the driving force receiving portion 312 is used for receiving driving force from the electrophotographic image forming apparatus to drive the first gear portion 311 to rotate. The first gear portion 311 meshes with the developing roller gear 32 , the supplying roller gear 33 and the idler gear 34 respectively, thereby driving the developing roller gear 32 , the supplying roller gear 33 and the idler gear 34 to rotate.

Specifically, the idler gear 34 includes a second gear portion 341 and a third gear portion 342 that are sequentially spaced apart along the opposite direction of the first direction D1, and the stirring member gear 35 includes fourth gear portions that are sequentially spaced apart along the opposite direction to the first direction D1 As for the gear part 351 and the fifth gear part 352 , the first gear part 311 meshes with the third gear part 342 , and the second gear part 341 meshes with the fourth gear part 351 . When the driving force receiving portion 312 receives the driving force from the electrophotographic image forming apparatus, the first gear portion 311 can drive the developing roller gear 32 , the supply roller gear 33 , the idler gear 34 and the stirring member gear 35 to rotate, thereby driving the developing roller 2 , the supply roller and the stirring member rotate.

Referring to FIGS. 4 and 5 , the first side wall 11 is provided with a guide member 62 and a support shaft 61 , the guide member 62 is arranged on the outer circumference of the support shaft 61 around the first axis L1 , and the first axis L1 is also the support shaft 61 the central axis. Both the guide member 62 and the support shaft 61 extend from the first side wall 11 in the opposite direction of the first direction D1 , and the guide member 62 is arranged on the first side wall 11 in an arc shape.

The detected member 7 includes a base 71, a rotating shaft 73 and a detection gear portion 76. The rotating shaft 73 is detachably sleeved on the support shaft 61, and the central axis of the rotating shaft 73 is the second axis (not shown in the figure), And the second axis coincides with the first axis L1; wherein, the base 71 includes a first surface 711 and a second surface 712 opposite to each other along the first direction D1, and a through hole 72 is formed through the middle of the base 71; the rotating shaft 73 It is fixedly arranged in the through hole 72, and makes the rotation shaft 73 penetrate the middle of the base 71; The first gear portion 311 can drive the detection gear portion 76 to rotate in the T direction through the idler gear 34 and the stirring member gear 35 in turn, thereby driving the detected member 7 to rotate around the first axis L1.

Specifically, the base 71 has a substantially circular plate-like structure, and the rotating shaft 73 has a columnar structure. The detection gear portion 76 extends from the second surface 712 along the first axis L1 to the direction of the first side wall 11 . There may be a gap between the inner wall of the detection gear portion 76 close to the first axis L1 and the outer wall of the rotating shaft 73 away from the first axis L1 . There may or may not be a gap; the detection gear portion 76 may also extend outward from the outer edge of the base 71 , which is not limited herein. The outer edge of the base 71 is further to the outer side than the end of the detection gear portion 76 , that is, the distance between the end of the detection gear portion 76 away from the first axis L1 and the first axis L1 is less than or equal to the distance between the side of the base 71 and the first axis L1 . The distance between the first axes L1.

The detected piece 7 further includes a detection portion 74 and a contact portion 77 , wherein the detection portion 74 extends from the first surface 711 in the opposite direction of the first direction D1 , and the contact portion 77 extends from the side wall of the rotating shaft 73 along the rotating shaft 73 . The abutting portion 77 is located on the side where the second surface 712 is located. When the detected member 7 rotates in the T direction, the abutting portion 77 can abut on the guide member 62 and move along the end surface of the guide member 62 away from the first side portion.

Specifically, the distance S3 between the end of the abutting portion 77 away from the first axis L1 and the first axis L1 is greater than the distance between the end of the detection gear portion 76 away from the first axis L1 and the first axis L1 . The shape of the detection portion 74 includes, but is not limited to, arc shape, plate shape, etc. The abutting portion 77 may be disposed on the second surface 712 , or may be disposed at a certain distance from the second surface 712 , which is not limited herein. In the embodiment of the present application, the shape of the detection portion 74 is an arc shape, and the abutting portion 77 is disposed on the second surface 712 .

The developing cartridge 100 further includes an end cover 5 connected with the first side wall 11 , and an elastic member 4 is further provided between the end cover 5 and the detected member 7 . The detected member 7 further includes a mounting portion 75 for mounting the elastic member 4, and the elastic member 4 includes but is not limited to a spring, a leaf spring, an elastic sheet, a spring pin, and the like. The end cover 5 includes a third surface 51 away from the first side wall 11 along the first axis L1 . The third surface 51 is provided with a through opening 52 corresponding to the position of the detected piece 7 , and the detection portion 74 can protrude from the through opening 52 . The shape of the port 52 includes, but is not limited to, a "C" shape, a ring shape, an arc shape, and the like.

Specifically, the mounting portion 75 includes limiting ribs arranged on the side wall of the rotating shaft 73 at intervals, and the limiting ribs are extended from the side wall of the rotating shaft 73 in the radial direction of the rotating shaft 73 . The elastic member 4 can be a spring, and the spring is sleeved on the outer circumference of the limit rib to position the spring. When the end cover 5 is installed on the first side wall 11 of the housing 1, it is avoided that the spring is stressed. Displacement causes problems with inaccurate installation.

The guide member 62 includes a support portion 63 and an escape portion 64 , and the abutting portion 77 can abut against the support portion 63 during the rotation. The distance S1 between any position of the end surface of the support portion 63 away from the first side wall 11 along the first axis L1 and the first axis L1 is smaller than the distance S1 between the end of the abutting portion 77 away from the first axis L1 and the first axis L1. Distance S3, the distance S2 between any position on the end surface of the avoidance portion 64 away from the first side wall 11 along the first axis L1 and the first axis L1 is greater than or equal to the distance S2 between the end of the abutting portion 77 away from the first axis L1 and the first axis L1. Distance S3 between axes L1.

Specifically, the support portion 63 and the escape portion 64 are provided on the first side wall 11 in an arc shape, and the radius of curvature of the escape portion 64 is larger than the radius of curvature of the support portion 63 .

During the rotation of the detected piece 7 , the abutting portion 77 first abuts on the supporting portion 63 and moves along the end surface of the supporting portion 63 away from the first side wall 11 , and then the abutting portion 77 continues to rotate. The radius of curvature of 64 is larger than that of the support portion 63 , the abutting portion 77 moves along the end face of the escape portion 64 away from the first side wall 11 for a period of time and can no longer bear against the escape portion 64 , under the action of the elastic member 4 . The detection part 74 is moved toward the direction close to the first side wall 11 to complete the detection of the developing cartridge 100 , so there is no need to pre-set a notch on the guide 62 , which simplifies the structure of the developing cartridge 100 and its production process.

In addition, when different electrophotographic image forming apparatuses detect the developing cartridge 100, there are differences in the time required for the detected member 7 to rotate, which is embodied in the distance between the end of the abutting portion 77 away from the first axis L1 and the first axis L1 The distance S3 is different, so the user can replace the detected member 7 to realize that the developing cartridge 100 is suitable for different electrophotographic image forming apparatuses, which improves the versatility of the developing cartridge 100 .

Referring to FIG. 6 , the support portion 63 includes a first end surface 631 and a second end surface 632 that are away from the first side wall 11 along the first axis L1 , and the escape portion 64 includes a third end surface that is away from the first side wall 11 along the first axis L1 641. The first end surface 631 , the second end surface 632 and the third end surface 641 are continuously connected in sequence, the first end surface 631 is an inclined surface or a curved surface, and along the direction close to the second end surface 632 , between the first end surface 631 and the first side wall 11 distance gradually increases. The first end surface 631 is used to guide the abutting portion 77 to move and abut against the second end surface 632 .

The guide member 62 further includes an accommodating portion 65 disposed on the first side wall 11 , and the accommodating portion 65 is disposed adjacent to an end of the support portion 63 away from the avoidance portion 64 . The accommodating portion 65 includes a fourth end surface 651 away from the first side wall 11 along the first axis L1 , and the fourth end surface 651 is continuously connected with the first end surface 631 . The second end surface 632 , the third end surface 641 and the fourth end surface 651 are parallel to the first side wall 11 .

Referring to FIGS. 7 to 9 , in the initial state, the abutting portion 77 abuts on the fourth end surface 651 , and the end of the detecting portion 74 away from the first surface 711 is flush with the third plane where the through port 52 is located; when After the detected member 7 rotates in the T direction, the abutting portion 77 moves along the first end surface 631 to the second end surface 632 , and the end of the detection portion 74 away from the first surface 711 protrudes from the through port 52 to the third surface 51 At this time, the spring is in a compressed state, the detection part 74 is in contact with the detection mechanism in the electrophotographic imaging device, and drives the detection mechanism to move from the non-detection position to the detection position, so that the detection mechanism completes one detection of the developing cartridge 100 As the detected piece 7 continues to rotate in the T direction, the detection part 74 is out of contact with the detection mechanism, the detection mechanism returns from the detection position to the non-detection position, and the abutting part 77 moves to the third end face 641. The distance S2 between any position on the inner wall of the 64 and the first axis L1 is greater than the distance S3 between the end of the abutting portion 77 away from the first axis L1 and the first axis L1, and the abutting portion 77 cannot abut against the third axis. Therefore, under the elastic action of the spring, the detection portion 74 is retracted from the through port 52 toward the first side wall 11 along the first direction D1. At this time, the detection gear portion 76 is disengaged from the fifth gear portion 352, so that the The detected part 7 is no longer rotated.

After the detection gear portion 76 is disengaged from the fifth gear portion 352 , the detected member 7 will still rotate due to inertia, which may cause interference with the stirring member or the end cover 5 . In order to limit the rotation of the detected member 7 due to inertia, the first side wall 11 is further provided with a stopper 66 . The parts 77 come into contact with each other, thereby restricting the continued rotation of the detected member 7 due to inertia.

Example 2

Referring to FIG. 10 , the structure of the developing cartridge 100 in Embodiment 1 is basically the same, except that the guide member 62 may only include the support portion 63 , and the support portion 63 includes a first axis L1 away from the first side wall 11 . One end surface 631 and the second end surface 632, the first end surface 631 and the second end surface 632 are continuously connected, the first end surface 631 is an inclined surface or a curved surface, and along the direction close to the second end surface 632, the first end surface 631 and the first side wall The distance between 11 gradually increases. Optionally, a notch portion may be provided at the end of the support portion 63 , so that after the abutting portion 77 moves to the end of the support portion 63 , the notch portion is released from the contact with the support portion 63 .

The guide member 62 further includes an accommodating portion 65 disposed on the first side wall 11 , and the accommodating portion 65 is disposed adjacent to an end of the support portion 63 away from the notch portion. The accommodating portion 65 includes a fourth end surface 651 away from the first side wall 11 along the first axis L1 , and the fourth end surface 651 is continuously connected with the first end surface 631 . The second end surface 632 and the fourth end surface 651 are parallel to the first side wall 11 .

Specifically, in the initial state, the abutting portion 77 abuts on the fourth end surface 651, and the end of the detecting portion 74 away from the first surface 711 is flush with the third plane where the through port 52 is located; After the rotation in the T direction, the abutting portion 77 moves along the first end surface 631 to the second end surface 632 , and the end of the detection portion 74 away from the first surface 711 protrudes from the opening 52 to the outside of the third surface 51 . The spring is in a compressed state, the detection part 74 is in contact with the detection mechanism in the electrophotographic image forming apparatus, and drives the detection mechanism to move from the non-detection position to the detection position, so that the detection mechanism completes a detection action for the developing cartridge 100; The detection member 7 continues to rotate in the T direction, the detection part 74 is out of contact with the detection mechanism, the detection mechanism returns from the detection position to the non-detection position, and the abutting part 77 continues to move until it is out of contact with the second end surface 632, so that in the spring. Under the action of elasticity, the detection portion 74 is retracted from the opening 52 toward the first side wall 11 along the first direction D1. At this time, the detection gear portion 76 is disengaged from the fifth gear portion 352, so that the detected piece 7 does not occur again. rotate.

The support portion 63 further includes a fifth end surface 633 away from the first side wall 11 along the first axis L1 , and the fifth end surface 633 is continuously connected with the second end surface 632 . The fifth end surface 633 is an inclined surface or a curved surface, and along the direction close to the second end surface 632 , the distance between the fifth end surface 633 and the first side wall 11 gradually increases. The fifth end surface 633 is used to guide the abutting portion 77 out of contact with the second end surface 632 , and when the abutting portion 77 moves along the fifth end surface 633 , it can release part of the elastic potential energy of the elastic member 4 . After being out of contact with the fifth end face 633, the impact force of the detected part 7 on the casing 1 is reduced, which can not only prevent the casing 1 from shaking or damaged, but also reduce the impact of the detected part 7 on the casing after retracting. 1 noise.

Referring to FIGS. 11 to 13 , the end cover 5 is provided with a blocking portion 8 , one end of the blocking portion 8 is connected between two opposite inner walls of the through opening 52 , and the other end of the blocking portion 8 faces the edge of the first side wall 11 . The direction extends; when the detection part 74 rotates around the first axis L1 for a period of time, the detection part 74 abuts against the blocking part 8 to restrict the detection part 74 from continuing to rotate.

Specifically, after the abutting portion 77 is out of contact with the second end surface 632, the blocking portion 8 is in contact with the detecting portion 74, and restricts the detected member 7 from continuing to rotate due to inertia, thereby avoiding the possibility of causing the detected member 7 and the stirring member to rotate. Or the problem of end cap 5 interference.

It can be understood that the blocking portion 8 can be arranged at any position on the end cover 5 , as long as the blocking portion 8 and the detecting portion 74 can be in contact with the detection portion 74 after the abutting portion 77 is out of contact with the second end surface 632 and restrict the detected piece 7 Continue to rotate due to inertia; alternatively, the detected part 7 can also be provided with a stopper 78, and the stopper 78 can be arranged at any position on the detected part 7, for example, the stopper 78 can be arranged on the first On the surface 711, and extending from the end of the detection part 74 to the direction close to the first axis L1, as long as the abutting part 77 is out of contact with the second end surface 632, the blocking part 8 and the stop part 78 can contact and restrict The detected member 7 may continue to rotate due to inertia, which is not limited here.

In this embodiment, the blocking portion 8 is provided on the end cover 5, and the blocking portion 8 restricts the detection portion 74 from continuing to rotate due to the inertial effect. Compared with the stopper 66 restricting the detection portion 74 to continue to rotate due to inertia, the number of components on the first side wall 11 can be reduced, which is beneficial to the miniaturization of the developing cartridge 100 .

Example 3

14 and 15 , the structure of the developing cartridge 100 in Embodiment 1 or Embodiment 2 is basically the same, except that when the abutting portion 77 of the detected member 7 moves to the third end surface 641 of the avoidance portion 64 , the abutting portion 77 and the third end surface 641 are not out of contact, that is, the abutting portion 77 still abuts on the third end surface 641 . The distance between the edge of the first axis L1 away from the first side wall 11 and the edge of the abutting portion 77 and the first axis L1 is equal to the distance between the end surface of the escape portion 64 away from the first side wall 11 along the first axis L1, and the The distance between the edge of the portion 77 and the first axis L1 and the like.

The distance between the third end surface 641 and the first side wall 11 is smaller than the distance between the second end surface 632 and the first side wall 11 , and when the abutting portion 77 moves to the third end surface 641 , the detecting portion 74 is elastically Under the elastic action of the member 4, it can be retracted from the through opening 52, so that the detection part 74 is moved toward the direction close to the first side wall 11, and the detection part 74 is kept away from the end of the first side wall 11 and the first side of the end cover 5. The three surfaces 51 are flush or located on the left side of the third surface 51 along the first direction D1.

The support portion 63 further includes a fifth end surface 633 away from the first side wall 11 along the first axis L1 , and the fifth end surface 633 is continuously connected between the second end surface 632 and the third end surface 641 . The fifth end surface 633 is an inclined surface or a curved surface, and along the direction close to the second end surface 632 , the distance between the fifth end surface 633 and the first side wall 11 gradually increases.

The guide member 62 further includes an accommodating portion 65 disposed on the first side wall 11 , and the accommodating portion 65 is disposed adjacent to the end of the support portion 63 away from the avoidance portion 64 , and the accommodating portion 65 includes a distance along the first axis L1 from the first side wall 11 The fourth end face 651 of the . The second end surface 632 , the third end surface 641 or the fourth end surface 651 may be parallel to the first side wall 11 , respectively.

Specifically, in the initial state, the abutting portion 77 abuts on the fourth end surface 651, and the end of the detecting portion 74 away from the first surface 711 is flush with the third plane where the through port 52 is located; After the rotation in the T direction, the abutting portion 77 moves along the first end surface 631 to the second end surface 632 , and the end of the detection portion 74 away from the first surface 711 protrudes from the opening 52 to the outside of the third surface 51 . The spring is in a compressed state, the detection part 74 is in contact with the detection mechanism in the electrophotographic image forming apparatus, and drives the detection mechanism to move from the non-detection position to the detection position, so that the detection mechanism completes a detection action for the developing cartridge 100; The detection member 7 continues to rotate in the T direction, the detection portion 74 is out of contact with the detection mechanism, and the detection mechanism returns from the detection position to the non-detection position. Under the elastic action of the spring, the fifth end surface 633 is used to guide the abutting portion 77 to escape Contact with the second end surface 632 and move to the third end surface 641 . At this time, the detection portion 74 retracts from the port 52 along the first direction D1 toward the first side wall 11 . At this time, the detection gear portion 76 and the fifth gear portion are detected. 352 is disengaged, so that the detected member 7 no longer rotates.

When the abutting portion 77 moves along the fifth end surface 633 , the elastic potential energy of the elastic member 4 can be gradually released. Therefore, the impact force of the detected piece 7 on the casing 1 can be reduced, which can not only prevent the casing 1 from shaking or damaged, but also reduce the noise of the detected piece 7 hitting the casing 1 after retracting.

In use, firstly, the rotating shaft 73 of the detected part 7 is detachably sleeved on the supporting shaft 61 of the developing cartridge 100, and then the end cover 5 is set on the casing 1 and connected with the first side wall 11, and the The elastic member 4 is arranged between the end cover 5 and the detected member 7; finally, the developing cartridge 100 is detachably installed into the electrophotographic image forming apparatus; when the developing cartridge 100 needs to be detected, the driving force receiving member 31 can be obtained from the electronic The photographic imaging device receives the driving force, the driving force receiving member 31 can be rotated by the detected member 7 , and the abutting portion 77 of the detected member 7 moves along the end face of the guide member 62 away from the first side wall 11 until the abutting portion 77 It is out of contact with the support portion 63, and under the elastic action of the elastic member 4, the detected member 7 moves toward the direction close to the first side wall 11, so that the detection portion 74 approaches the first side wall 11 from the through port 52 along the first direction D1. The side walls 11 are retracted.

Compared with the prior art, in a developing cartridge 100 provided by the present application, the power assembly 3 can drive the detected member 7 to rotate, and during the rotation of the detected member 7, the abutting portion 77 first abuts against the supporting portion 63 and move along the end face of the support portion 63 away from the first side wall 11, and then the abutting portion 77 continues to rotate. It abuts against the avoidance portion 64, so that the detection portion 74 moves toward the direction close to the first side wall 11, so as to complete the detection of the developing cartridge 100. Compared with the prior art, a gap is provided on the guide member 62 of the developing cartridge 100 in advance. In other words, the structure of the developing cartridge 100 and the production process thereof are simplified; at the same time, when different electrophotographic image forming apparatuses detect the developing cartridge 100, there are differences in the time required for the detected member 7 to rotate, which is embodied in the abutting portion. The distance S3 between the end of 77 away from the first axis L1 and the first axis L1 is different, so the user can replace the detected part 7 to realize that the developing cartridge 100 is suitable for different electrophotographic imaging devices, thereby improving the developing cartridge 100. generality.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall include within the scope of protection of the present invention.

Claims (10)

1. A developing cartridge, comprising a casing, a power assembly and a detected part, the casing comprises a first side wall and a second side wall opposite to each other along a first direction, the power assembly is used to drive the subject The detection member rotates around the first axis, and is characterized in that the detected member includes a detection portion and a contact portion; A guide member is provided on the first side wall, and the guide member is arranged around the first axis; The guide member includes a support portion and an escape portion, and the abutting portion can abut on the support portion during the rotation; The minimum distance between the end face of the avoidance portion away from the first side wall along the first axis and the first axis is greater than or equal to the distance between the end of the abutting portion away from the first axis and the first axis. distance between axes. 2 . The developing cartridge according to claim 1 , wherein the detected member is disposed on the first side wall, and the support portion is away from an end surface of the first side wall along the first axis. 3 . The minimum distance from the first axis is smaller than the distance between the end of the abutting portion remote from the first axis and the first axis. 3 . The developing cartridge according to claim 2 , wherein the supporting portion and the escape portion protrude from the first side wall, and the supporting portion includes a distance away from the first side wall along the first axis. 4 . A first end face and a second end face of a side wall, the escape portion includes a third end face away from the first side wall along the first axis; The first end surface, the second end surface, and the third end surface are continuously connected in sequence, the first end surface is an inclined surface or a curved surface, and along the direction close to the second end surface, the first end surface and the The distance between the first side walls is gradually increased. 4 . The developing cartridge according to claim 3 , wherein the guide member further comprises an accommodating portion disposed on the first side wall, and the accommodating portion is disposed adjacent to the supporting portion and away from the one end of the avoidance part; The accommodating portion includes a fourth end surface that is remote from the first side wall along the first axis, and the fourth end surface is continuously connected to the first end surface. 5 . The developing cartridge according to claim 4 , wherein a stopper is further provided on the first side wall, and the stopper is arranged adjacent to an end of the escape portion away from the support portion. 6 . 6 . The developing cartridge according to claim 1 , wherein a support shaft is further provided on the first side wall, the first axis is a central axis of the support shaft, and the guide member surrounds the support shaft. 7 . The first axis is arranged on the outer circumference of the support shaft. 7 . The developing cartridge according to claim 6 , wherein the detected member further comprises a base and a rotating shaft, and the base includes a first surface and a second surface opposite to each other along the first direction. 8 . , and the rotating shaft is arranged through the middle of the base, and the rotating shaft is sleeved on the support shaft; The detection portion extends from the first surface in a direction opposite to the first direction, the abutting portion extends from a side wall of the rotating shaft in a radial direction of the rotating shaft, and the abutting portion extends in a radial direction of the rotating shaft. The portion is located on the side where the second surface is located. 8 . The developing cartridge according to claim 7 , wherein the power assembly comprises a gear unit, the detected member further comprises a detection gear part, and the detection gear part meshes with the gear unit. 9 . 9 . The developing cartridge according to claim 8 , wherein the detection gear portion extends from the second surface along the first axis to a direction close to the first side wall; 9 . Or, the detection gear portion extends outward from the outer edge of the base. 10. The developing cartridge according to any one of claims 1-9, wherein the developing cartridge further comprises an end cap, the end cap is connected with the first side wall, and the end cap is connected to the end cap. An elastic piece is also arranged between the detected pieces; The end cover includes a third surface along the first axis away from the first side wall, the third surface is provided with a through opening corresponding to the position of the detected piece, and the detection portion can be connected from the The port extends.

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