CN215376099U

CN215376099U - Developing box

Info

Publication number: CN215376099U
Application number: CN202121010019.6U
Authority: CN
Inventors: 胡飞; 陈志斌
Original assignee: Jiangxi Yibo Electronic Technology Co Ltd
Current assignee: Jiangxi Yibo Electronic Technology Co Ltd
Priority date: 2020-05-16
Filing date: 2021-05-12
Publication date: 2021-12-31
Anticipated expiration: 2031-05-12
Also published as: CN113687582A

Abstract

The present invention relates to a developing cartridge detachably mountable to an electrophotographic image forming apparatus including an identification member, the developing cartridge comprising: a housing, the interior of which can contain a developer; a driving force receiving member provided at the driving end of the housing, for receiving a driving force transmitted from the electrophotographic image forming apparatus, and rotating about a first axis extending in the left-right direction; the stirring frame is used for rotating around the axis of the stirring frame extending in the left-right direction, and the driving force receiving part is used for driving the stirring frame to rotate; the detected part is arranged at the detected end, opposite to the driving end, of the shell in the left-right direction, at least one part of the detected part in the front-back direction is located between the axis of the stirring frame and the first axis, and when the detected part is projected from the driving end to the detected end along the left-right direction, the projection range of the driving force receiving part is completely separated from the projection range of the detected part.

Description

Developing box

Technical Field

The utility model relates to the field of electronic imaging, in particular to a developing box.

Background

The prior art discloses a developing cartridge detachably mountable to an electrophotographic image forming apparatus including a recognition member, fig. 1 and 2 are schematic structural views of a detected end of the developing cartridge, the developing cartridge generally includes a casing, a developing roller, a detected end, an agitating frame, a detected device, etc., the recognition member 30 of the electrophotographic image apparatus can determine whether the developing cartridge is a completely new developing cartridge by contact with the detected device after the developing cartridge is mounted in the electrophotographic image apparatus, the developing roller 2 and a handle 5 are respectively located at a front end and a rear end of the developing cartridge in a front-rear direction of the developing cartridge, the developing cartridge has a driving force receiving member receiving a driving force, the driving force receiving member rotates about a first axis a2 extending in an axial direction, a projection of the driving force receiving member on the detected end in the first axial direction is a driving force receiving member projection 10a, the projection 10a of the driving force receiving part is positioned between the stirring rack 40 and the developing roller 2 in the front-back direction, and the distance between the projection and the developing roller 2 is shorter than the distance between the projection and the stirring rack 40, the driving force receiving part can drive the stirring rack 40 to rotate around a stirring rack axis A3 extending in the axial direction, the stirring rack 40 drives the second stirring rack gear 41 connected with the stirring rack to rotate, the second stirring rack gear 41 drives the transmission gear 42 meshed with the second stirring rack gear, the transmission gear 42 drives the detection gear 43 of the detected device meshed with the transmission gear to rotate, the contact part 44 of the detected device rotates along with the detection gear 43, the contact part 44 contacts with the identification part 30 in the rotation process and enables the identification part to rotate around a rotation center B1, the rotation center B1 is positioned near the stirring rack axis A3 in the front-back direction, and the distance moved in the rotation process is shorter as the position on the identification part 30 is closer to the rotation center B1, therefore, the closer the contact point of the detected device and the identification part 30 is to the rotation center B1, the shorter the distance the detected device can move when the identification part 30 rotates to a certain angle, the structure of the identification part 30 is configured such that the distance between the contact part 44 and the rotation center B1 is mainly determined by the length of the distance between the contact part 44 and the identification part 30 in the front-back direction, the detected device of the developing cartridge is partially overlapped with the projection 10a of the driving force receiving part farther from the agitating frame 40, and the contact part 44 of the detected device moves in the direction away from the rotation center B1 when the detection part is pushed to rotate the identification part 30, when the detected device is located at the detection position, the first contact point of the contact part 44 and the identification part 30 is C1, when the distance L1 between the first contact point C1 and the first axis a2 in the front-back direction is smaller than the distance L2 between the first contact point C1 and the axis A3 of the agitating frame, that is, L1< L2, since the rotation center B1 is located near the agitator arm axis A3 in the front-back direction, it can be known that the contact member 44 is far from the rotation center B1, and the contact member 44 is required to move a long distance to push the identification member 30 to the detection position, which results in that the detected device occupies more space at the detected end to enable the contact member 44 to complete the detection process, and the detected device occupies more space at the detected end to affect the normal arrangement of other structures at the detected end, which is not beneficial to the production and processing of the developing cartridge.

SUMMERY OF THE UTILITY MODEL

The utility model provides a developing box, which is characterized in that the distance between a detected part and the rotation center of an identification part is shorter, the detected part ensures that the identification part occupies less space of a detected end when completing the detection process, therefore, other structures at the detected end can be normally arranged, and meanwhile, the detected part has a simple structure, thereby being very beneficial to the production and processing of the developing box.

In order to solve the problems, the utility model is realized by the following technical scheme:

a developing cartridge detachably mountable to an electrophotographic image forming apparatus, comprising:

a housing, the interior of which can contain a developer;

a developing roller mounted on the casing, the developing roller rotating around a developing roller axis extending in a left-right direction and located at a front end of the casing in a front-back direction perpendicular to the left-right direction;

a handle for facilitating the user to put and take the developing cartridge, the handle being located at the rear end of the casing in the front-rear direction;

a driving force receiving member provided at a driving end of the housing for receiving a driving force transmitted by the electrophotographic image forming apparatus, the driving force receiving member being rotatable about a first axis extending in a left-right direction;

the stirring frame rotates around a stirring frame axis extending in the left-right direction, and the driving force receiving part is used for driving the stirring frame to rotate;

a detected member, provided at a detected end of the housing opposite to the driving end in a left-right direction, detectable by an identification member provided in the electrophotographic image forming apparatus;

at least one part of the detected part is positioned between the axis of the stirring frame and the first axis in the front-back direction, and when the detected part is projected from the driving end to the detected end along the left-right direction, the projection range of the driving force receiving part is completely separated from the projection range of the detected part.

Preferably, the detected component comprises a touch part, and the touch part is located between the axis of the stirring frame and the first axis in the front-back direction.

Preferably, the driving end of the housing is mounted with a chip having an electrical contact for electrical contact with the electrophotographic image forming apparatus, projected in the left-right direction, and the touching portion of the detected member falls between the maximum outer contour of the driving force receiving member and the electrical contact in the front-rear direction.

Preferably, the detection end is provided with a protecting cover, the protecting cover is provided with a guide sliding groove, the detection part is provided with a guide sliding rib, and the guide sliding rib can be clamped into the guide sliding groove.

Preferably, the detection member is movable in a direction intersecting the left-right direction to contact the recognition member and push the recognition member to a detection position.

Preferably, the device further comprises an intermediate driving member for transmitting a driving force to the detected member, the intermediate driving member is mounted on the detected end, and the intermediate driving member is provided with a plurality of protruding portions through which the detected member can be pushed to move for a plurality of times.

Preferably, the driving end of the housing is mounted with a chip having an electric contact for electrically contacting the electrophotographic image forming apparatus, the electric contact, the intermediate driving member, and the driving force receiving member being arranged in this order in a front-rear direction as projected in a left-right direction.

Preferably, the detected member includes a trigger, the trigger forms a second contact point contacting with the identification member, and when the trigger pushes the identification member to the detection position, a distance L3 between the second contact point and the first axis in the front-back direction is greater than a distance L4 between the second contact point and the first axis, that is, L3> L4.

Preferably, the detected component comprises a touch part, the touch part can push the identification component to rotate around a rotation center to a detection position, and in the pushing process of the touch part, the distance between a contact point of the touch part and the identification component and the rotation center is gradually shortened.

Preferably, the detected end of the developing cartridge further comprises a rotating member, the rotating member is rotatable around the agitator axis, and the rotating member is used for pushing the detected component to move.

After the developing box is adopted in the technical scheme, at least one part of the detected part is arranged between the axis of the stirring frame and the first axis in the front-back direction, and the detected part is arranged not to be overlapped with a projection range formed by the projection of the driving force receiving part from the driving end to the detected end in the left-right direction, so that the distance between the detected part and the rotation center of the identification part is shorter, the detected part only needs to move for a shorter distance to push the identification part to the detection position, therefore, the arrangement of the detected part only needs to occupy a smaller space of the detected end, more space at the detected end is used for normally arranging other structures at the detected end, the structure of the detected part is simple, the developing box is convenient to produce and process, and the problem that the detected device occupies a larger space of the detected end in the prior art is solved, the influence is detected the normal setting of other structures of end department, is unfavorable for the problem of production and processing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of a structure of a detected end of a developing cartridge provided in the related art;

fig. 2 is a schematic structural view of a detection device touch recognition part of a developing cartridge provided in the related art;

fig. 3 is an exploded perspective view of the driving end side of the developing cartridge provided in embodiment 1 of the present invention;

fig. 4 is an exploded perspective view of the side of the detected end of the developing cartridge provided in embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a rotary member of a developing cartridge provided in embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a detected member of the developing cartridge provided in embodiment 1 of the present invention;

fig. 7 is a right side view of the rotary member of the developing cartridge provided in embodiment 1 of the present invention at the home position;

fig. 8 is a plan view of a rotary member of the developing cartridge provided in embodiment 1 of the present invention at a home position;

fig. 9 is a right side view of the rotary member of the developing cartridge in the pushed-up position provided in embodiment 1 of the present invention;

fig. 10 is a plan view of a rotary member of a developing cartridge provided in embodiment 1 of the present invention at a pushed-up position;

fig. 11 is a right side view of the rotary member of the developing cartridge provided in embodiment 1 of the present invention at the end position;

fig. 12 is a plan view of the rotary member of the developing cartridge provided in embodiment 1 of the present invention at the end position;

fig. 13 is an exploded view schematically showing the side of the detected member of the developing cartridge provided in embodiment 2 of the present invention;

FIG. 14 is a structural view of a developing cartridge according to embodiment 2 of the present invention, from a first viewing angle, with the protective cover removed;

FIG. 15 is a structural view of a developing cartridge provided in embodiment 2 of the present invention, from a second viewing angle, with the protective cover removed;

FIG. 16 is a schematic structural view of a developing cartridge according to embodiment 2 of the present invention, with a protective cover removed from a side of a member to be detected;

fig. 17 is an overall configuration diagram of a developing cartridge provided in embodiment 2 of the utility model;

fig. 18 is a schematic view of a driving force transmission structure of a developing cartridge provided in embodiment 2 of the present invention;

fig. 19 is a schematic structural view of a developer cartridge according to embodiment 2 of the present invention, in which a detected member is in a first position where it is not pushed forward;

fig. 20 is a schematic structural view of a second position where the detected member of the developing cartridge provided in embodiment 2 of the present invention is pushed forward and pushes the identifying member in the electronic image forming apparatus to rotate;

fig. 21 is a schematic view of a driving force transmission structure of a developing cartridge and a structure of a chip when projected in the developing roller axial direction provided in embodiment 2 of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the following description, the developing roller 2 is located at the front end portion of the casing 1 in the front-rear direction, the handle 5 is located at the rear end portion of the casing 1 in the front-rear direction, and the direction intersecting the left-right direction and the front-rear direction is the up-down direction, in the left-right direction in which the developing roller axis a1 extends.

Example 1

Developing box

As shown in fig. 3 and 4, the developing cartridge of the present invention, which is mountable to an electrophotographic image forming apparatus, includes: a casing 1 configured to internally contain a developer; an agitation frame 14 located inside the casing 1, the agitation frame 14 being rotatable about an agitation frame axis a3 extending in the left-right direction while being capable of agitating the developer contained inside the casing 1; a powder feeding roller 7, located inside the casing 1, for supplying the developer contained inside the casing 1 to the developing roller 2; a developing roller 2 rotatable about a developing roller axis a1 extending in the left-right direction, the developing roller 2 being located at least partially outside the casing 1, the developing roller 2 being located at a front end portion of the casing 1 in the front-rear direction; a handle 5 for facilitating the user to put and take the developing cartridge, the handle 5 being provided at the rear end portion of the casing 1 in the front-rear direction.

Drive end

As shown in fig. 3, the developing cartridge further includes a driving end 3 which depends on gear transmission to receive driving force for driving components in the developing cartridge to work, the driving end 3 is located at the left end of the housing 1 in the left-right direction, and the driving end 3 includes: the developing roller gear 8 is matched with the developing roller 2 and drives the developing roller 2 to rotate; the powder feeding roller gear 9 is matched with the powder feeding roller 7 and drives the powder feeding roller 7 to rotate; a driving force receiving part 10 which is engaged with the developing roller gear 8, the powder feeding roller gear 9, and the transmission gear 12 and can receive the driving force transmitted by the electrophotographic image forming apparatus, thereby driving the developing roller gear 8, the powder feeding roller gear 9, and the transmission gear 12 to rotate; a bearing 6 mountable to the housing 1 and capable of supporting the driving force receiving member 10, the bearing 6 having a first axis a2 extending in the left-right direction, the driving force receiving member 10 being rotatable about a first axis a 2; the transmission gear 12 is also meshed with the stirring rack gear 13 and can drive the stirring rack gear 13 to rotate; the stirring frame gear 13 is matched with the stirring frame 14 and drives the stirring frame 14 to rotate around a stirring frame axis A3; a first cover 11, which is mountable to the housing 1, is provided to cover the developing roller gear 8, the powder feed roller gear 9, the transmission gear 12, the agitation frame gear 13, and the driving force receiving part 10.

Detected terminal

As shown in fig. 4, 5, 6, 7, and 9, the developing cartridge further includes a detected end 4 capable of touching the identification member 30 in the electrophotographic image forming apparatus, the detected end 4 is disposed opposite to the driving end 3 in the left-right direction, and is located at the right end of the housing 1, and the detected end 4 is provided with: the connecting member 20, the connecting member rod 20b of the connecting member 20 can be connected with the stirring frame 14, the connecting member 20 can rotate together with the stirring frame 14, the connecting member 20 also comprises a first engaging part 20a, and the first engaging part 20a is at least composed of one engaging part; a rotary member 16 at least partially located at the left end of the connecting member 20 in the direction along the agitator axis, the rotary member 16 including a second engaging portion 16b, the second engaging portion 16b being engageable with the first engaging portion 20a so that the connecting member 20 can drive the rotary member 16 to rotate about the agitator axis a3, the second engaging portion 16b being formed by at least one engaging portion, the rotary member 16 further including a pushing portion 16a, a first outer surface 16d, and a support portion 16c, the pushing portion 16a being located on the first outer surface 16d, the pushing portion 16a and the support portion 16c being respectively located at both ends of the rotary member 16 in the left-right direction, the support portion 16c being located closer to the housing 1 than the pushing portion 16a in the left-right direction, that is, the pushing portion 16a being located at the right end of the rotary member 16, the support portion 16c being located at the left end of the rotary member, preferably, the pushing portion 16a being configured such that at least one face is an inclined plane, of course, the pushing part 16a may be configured such that at least one surface is a curved surface; a support base 15 provided on the housing 1, the support base 15 including a rail portion 15a, a notch portion 15b, and a restriction portion 15c, the support portion 16c of the rotary member 16 being movable on the rail portion 15 a; the detected part 17 is used for triggering the recognition part 30 in the electronic photographic image forming device, the detected part 17 comprises a first hole 17a, a triggering part 17b and a first force-bearing part 17c, preferably, the first hole 17a, the triggering part 17b and the first force-bearing part 17c are positioned between the stirring rack axis A3 and the first axis A2 in the front-back direction, and the detected part 17 can have partial structure which is not arranged between the stirring rack axis A3 and the first axis A2; when the recursion part 16a of the rotating member 16 recurs the first force-receiving part 17c of the detected part 17, the detected part 17 will move in the left-right direction, so that the touching part 17b touches the identification part 30, preferably, the first force-receiving part 17c is provided with an inclined plane, the purpose is to make the first force-receiving part 17c separate from the recursion part 16a smoothly, and reduce the impact of the first force-receiving part 17c on the rotating member 16, preferably, the touching part 17b is provided with an inclined plane, the inclined plane is provided so that the touching part 17b can touch the identification part 30, and of course, the inclined plane may be a cambered surface; a second cover 19, which can be fixed to the housing 1 by screws (not shown), the second cover 19 comprising a first post 19a and an opening 19b, the first post 19a being insertable into the first hole 17a, since at least a part of the first hole 17a is not a circumferential surface, the fitting of the first post 19a to the first hole 17a makes the member to be detected 17 unable to rotate around the first post 19a, but only moves in the left-right direction along the first column 19a, so that the distance between the detected component 17 and the rotation center B1 in the front-back direction is kept constant, the touching part 17B is exposed through the opening part 19B, an elastic component 18 is arranged between the second protecting cover 19 and the detected component 17, the elastic component 18 is positioned on the first column 19a, while the elastic member 18 abuts against the detected member 17, the elastic member 18 is provided so that the detected member 17 can be held in abutment against the rotary member 16.

Further, when the driving force receiving member 10 is projected along the detected end 4 in the left-right direction, the formed driving force receiving member projection 10a has no portion overlapping the detected member 17, that is, the detected member 17 is not disposed close to the driving force receiving member projection 10a, more specifically, when the touching portion 17B of the detected member 17 pushes the identification member 30 to the detection position, the touching portion 17B has the second contact point C2 contacting the identification member 30, the distance L3 between the second contact point C2 and the first axis a2 in the front-rear direction is greater than the distance L4 to the agitator frame axis A3, that is, L3> L4, that is, the touching portion 17B is disposed close to the agitator frame axis A3, since the rotation center B1 is located near the agitator frame axis A3 in the front-rear direction, the distance between the touching portion 17B and the rotation center B1 is mainly determined by the length of the distance between the touching portion 17B and the rotation center B1 in the front-rear direction, the touching portion 17B is now closer to the rotation center B1. The external detection member 17 contacts the identification member 30 by the movement of the touching portion 17B in the right direction to rotate the identification member 30 around the rotation center B1, the distance between the contact point of the touching portion 17B and the identification member 30 and the rotation center B1 in the up-down direction is shortened during the movement, although the degree of shortening is not large, the distance between the contact point of the trigger 17B and the identification member 30 and the rotation center B1 is also shortened as a whole, and the detected member 17 is disposed closer to the rotation center B1 in the front-rear direction as a whole, and the distance between the contact point of the touching part 17 with the identification part 30 during the movement and the rotation center B1 is shortened, this all allows the detected component 17 to move a short distance to move the identifying component 30 to the detecting position, which means that the detected component 17 only needs to occupy less space of the detected end to make the identifying component 30 complete the detecting process.

The operation of the detected member 17 of the developing cartridge of the present invention when the developing cartridge of the present invention is mounted in the electrophotographic image forming apparatus will be described in detail below with reference to fig. 3 to 12.

When the rotating member 16 is located at the initial position, the supporting portion 16c of the rotating member 16 abuts against the limiting portion 15c of the supporting seat 15 and the track portion 15a, the first engaging portion 20a of the connecting member 20 engages with the second engaging portion 16b of the rotating member 16, the first stressed portion 17c of the detected part 17 abuts against the first outer surface 16d of the rotating member 16 under the elastic force of the elastic part 18, the touching portion 17b of the detected part 17 is located on the left side of the identification part 30 in the left-right direction, and the touching portion 17b does not contact with the identification part 30, when the driving force receiving part 10 receives the driving force and rotates around the first axis a2, the driving force receiving part 10 drives the transmission gear 12 to rotate, so as to drive the stirring frame gear 13 to rotate, the stirring frame gear 13 drives the stirring frame 14 to rotate around the stirring frame axis A3, the connecting member 20 connected with the stirring frame 14 rotates together with the stirring frame 14, the connecting member 20 drives the rotating member 16 engaged with the connecting member to rotate around the stirring rack axis A3, the supporting portion 16c is separated from the defining portion 15c and rotates along the track portion 15a, during the rotation of the rotating member 16, the rotating member 16 has a pushing position, i.e. the pushing portion 16a of the rotating member 16 contacts with the first force-receiving portion 17c of the detected member 17 and pushes the first force-receiving portion 17c, so that the detected member 17 moves in the right-and-left direction, further, the touching portion 17B of the detected member 17 contacts with the identification member 30 and starts to touch the identification member 30, so that the identification member 30 rotates around the rotation center B1, and the distance from the rotation center B1 of the contact point of the touching portion 17B with the identification member 30 gradually decreases, because at least a portion of the detected member 17 is located between the stirring rack axis A3 and the first axis a2 and has no overlapping with the projection 10a of the driving force receiving member, and the distance from the contact point of the touching part 17B and the identification component 30 to the rotation center B1 is shortened in the process of pushing the identification component 30 to rotate, so the total distance between the detected component 17 and the rotation center B1 is shorter, and the detected component 17 only needs to occupy less space at the detected end 4 to move the identification component 30 to the detection position, when the rotation component 16 further rotates, the pushing part 16a will gradually separate from the first stressed part 17c, the detected component 17 moves in the left-right direction, the touching part 17B separates from the identification component 30, the touching part 17B contacts with the first outer surface 16d of the rotation component 16, further, the supporting part 16c of the rotation component 16 rotates into the notch 15B of the supporting seat 15, the first engaging part 20a disengages from the second engaging part 16B, the rotation component 16 reaches the termination position and stops rotating, in the entire process, the detected member 17 can push the identifying member 30 to the detecting position so that the detection signal is transmitted to the electrophotographic image forming apparatus, and then the electrophotographic image forming apparatus can judge the information of the developing cartridge by the detection signal.

Example 2

Next, embodiment 2 of the present invention will be described, and this embodiment is different from embodiment 1 in that the driving process and the specific structure of the detected member are different from embodiment 1.

As shown in fig. 13 to 20, in the present embodiment, the detected member 1701 is slidably disposed in the second cover 901, the second cover 901 is provided with a guide groove 1901a, the detected member 1701 has a guide rib 1701b engaged with the guide groove 1901a, and the engagement of the guide rib 1701b with the slide groove 1901a causes the detected member 1701 to move in a direction crossing the longitudinal direction of the developing cartridge, and preferably, the detected member 107 crosses the longitudinal direction of the developing cartridge, but the structure of sliding the detected member 1701 on the second cover 1901 is not limited thereto, and the positions of the guide groove and the guide rib may be set in the opposite direction. This arrangement makes it possible to stabilize the movement of the detection object 1701 pushing the identification part 30 in the electrophotographic image forming apparatus, and at the same time, the movement direction of the detection object 1701 mounted on the second cover 1901 is the direction crossing the longitudinal direction of the developing cartridge, so that the force required for pushing the identification part 30 to move can be made as small as possible, and the force pushing the identification part can be further reduced, contributing to the reduction of the overall torque of the developing cartridge.

The following describes the mounting process of the detected member in this embodiment. First, the detection target member 1701 is fitted into the guide groove 1901a of the second cover 1901 via the guide rib 1701b, and the detection target member 1701 is slidably mounted on the second cover 1901. An elastic member 24 is mounted on the second cover 1901, and preferably, the elastic member is a torsion spring, one leg portion 24a of which abuts on the first leg abutment portion 1901c of the second cover 1901, and a spiral portion of which is mounted on the torsion spring mounting post 1901b of the second cover 1901, and when the second cover 1901 is mounted on the housing of the developing cartridge, the other leg portion 24b of which abuts on the intermediate drive part 23 to maintain the initial engagement state of the intermediate drive part 23 and the idler 22. As shown in fig. 18, the driving force transmission in this embodiment is configured such that the driving force receiving member 10 is directly engaged with the developing roller gear 8 and the powder feeding roller gear 9, the driving force receiving member 10 is directly engaged with the first stirring frame gear 1301, the first stirring frame gear 1301 drives the stirring frame shaft 26 to rotate, the second stirring frame gear 21 is on the opposite side of the first stirring frame gear 1301 in the length direction of the stirring shaft, and the second stirring frame gear 21 is indirectly engaged with the intermediate driving member 23 via an idler gear 22. The driving end of the developing cartridge where the driving force receiving part 10 is located is also provided with a chip 26, and the chip 26 is provided with an electrical contact 26a for making electrical contact with the electrophotographic image forming apparatus. Projected along the rotational axis of the developing roller 2, the touched portion 1701a of the detected member 1701 falls between the driving force receiving member 10 and the electrical contact 26a of the chip 26 in the front-rear direction, and further falls between the maximum outer contour of the driving force receiving member 10 and the electrical contact 26a in the front-rear direction.

As shown in fig. 19 and 20, when the developing cartridge is mounted in the electrophotographic image forming apparatus and the driving force of the electrophotographic image forming apparatus is received by the driving force receiving member to rotate, the driving force is transmitted to the intermediate driving member 23 and drives the intermediate driving member 23 to rotate. When the developing cartridge is initially mounted in the electrophotographic image forming apparatus, the contact portion 1701c of the detected member 1701 contacts the second protruding portion 23b of the intermediate driving member 23, at which time the touching portion 1701a of the detected member 1701 does not touch the recognition member 30 in the electrophotographic image forming apparatus, and subsequently, the intermediate driving member 23 starts to be driven to rotate, in the process of the rotation of the intermediate driving member 23, the first protruding portion 23a provided thereon pushes the detected member 1701 to move in a direction approaching the identification member 30 in a direction crossing the axis of the developing roller and to rotate the identification member 30, the first protruding portion 23a may be provided singly or in plural at intervals, the electrophotographic image forming apparatus can detect different types of developing cartridges and whether or not they are new developing cartridges by the identifying member 30 being advanced different in the number of times. In this embodiment, the intermediate driving member 23 is preferably provided with a missing tooth gear structure, and when the detection of the developing cartridge by the identification member is completed, the non-tooth portion of the intermediate driving member 23 faces the idle gear 22, the intermediate driving member 23 stops rotating, and the elastic member 24 also abuts against the concave portion structure on the intermediate driving member 23 to limit the position of the intermediate driving member 23. The intermediate driving member 23 also falls in a space sandwiched between the driving force receiving member 10 and the electrical contact 26a of the chip 26 in the front-rear direction, that is, the electrical contact 26a, the intermediate driving member 23, and the driving force receiving member 10 are arranged in this order in the front-rear direction, as projected along the rotational axis of the developing roller 2.

The developing box of the utility model arranges at least one part of the detected part between the axis of the stirring frame and the first axis in the front-back direction, and simultaneously the detected part is not overlapped with the projection of the driving force receiving part formed by the projection of the driving force receiving part from the driving end to the detected end in the left-right direction, so that the distance between the detected part and the rotation center of the identification part is shorter, the detected part can move to the detection position by shorter distance, therefore, the arrangement of the detected part only needs to occupy smaller space of the detected end, and more space at the detected end enables the normal arrangement of other structures at the detected end, and simultaneously the structure of the detected part is simple, thereby facilitating the production and processing of the developing box, and solving the problems that the detected device occupies larger space at the detected end and influences the normal arrangement of other structures at the detected end in the prior art, is not beneficial to the production and processing.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A developing cartridge detachably mountable to an electrophotographic image forming apparatus, comprising:

a housing, the interior of which can contain a developer;

the driving force receiving part is arranged on the stirring frame, and at least one part of the detected part is located between the axis of the stirring frame and the first axis in the front-back direction.

2. A developing cartridge according to claim 1, wherein said detected member includes a touching portion, and said touching portion is located between said agitator shaft axis and said first axis in the front-rear direction.

3. A developing cartridge according to claim 2, wherein a chip having an electrical contact for electrical contact with said electrophotographic image forming apparatus is mounted to a driving end of said housing, projected in a left-right direction, and a touching portion of said detected member falls between a maximum outer contour of said driving force receiving member and said electrical contact in a front-rear direction.

4. The developing cartridge according to claim 2, wherein a protecting cover is mounted to the detected end, a guide groove is provided in the protecting cover, and a guide sliding rib is provided in the detected member, the guide sliding rib being capable of being engaged in the guide groove.

5. A developing cartridge according to claim 1, wherein said member to be detected is movable in a direction crossing the left-right direction to contact with said identifying member and push said identifying member to the detection position.

6. A developing cartridge according to claim 1, further comprising an intermediate driving member which transmits a driving force to said detected member, said intermediate driving member being mounted at said detected end, said intermediate driving member being provided with a plurality of projecting portions by which said detected member is urged to move a plurality of times.

7. A developing cartridge according to claim 6, wherein a chip having an electric contact for electrically contacting with said electrophotographic image forming apparatus is mounted to a driving end of said housing, said electric contact, said intermediate driving member, said driving force receiving member being arranged in this order in a front-rear direction as projected in a left-right direction.

8. A developing cartridge according to claim 1, wherein said detected member includes a trigger formed with a second contact point contacting said identification member, and a distance L3 between said second contact point and said first axis in the front-rear direction is larger than a distance L4 between said second contact point and said agitating shaft axis when said trigger pushes said identification member to the detection position, that is, L3> L4.

9. A developing cartridge according to claim 1, wherein said detection member includes a contact portion, said contact portion is capable of urging said identification member to rotate about a rotation center to a detection position, and a distance between a contact point where said contact portion contacts said identification member and said rotation center is gradually shortened in a process of urging said contact portion.

10. A developing cartridge according to claim 1, wherein the detected end of said developing cartridge further includes a rotary member rotatable about said agitator axis, said rotary member being adapted to urge said detected member to move.