CN220208092U

CN220208092U - Developing device

Info

Publication number: CN220208092U
Application number: CN202320136271.4U
Authority: CN
Inventors: 陈永迪; 苏罗发
Original assignee: Zhuhai Nastar Information Technology Co ltd
Current assignee: Zhuhai Nastar Information Technology Co ltd
Priority date: 2022-02-24
Filing date: 2023-01-29
Publication date: 2023-12-19
Anticipated expiration: 2033-01-29

Abstract

The utility model discloses a developing device, comprising: a cartridge for storing a developer, the cartridge having a first end and a second end in a first direction and a third end and a fourth end in a second direction; a developing roller rotatably supported at a third end of the cartridge body, an axis of the developing roller extending in a first direction; a transmission assembly for receiving and transmitting a driving force of the image forming apparatus; the detected component comprises a driving component and a detected piece, the detected piece is arranged on the box body in a movable way relative to the box body, and the detected piece comprises a driven end and a detected end; the driving assembly receives the driving force of the transmission assembly and acts with the driven end to enable the detected piece to move, and then the detected end triggers the detected piece in the image forming device. The detected component of the developing device has the advantages of simple structure, convenient assembly and stable operation, and is beneficial to miniaturization of the developing device.

Description

Developing device

Technical Field

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

Background

The developing device is a detachable portion widely used in image forming apparatuses. The image forming apparatus needs to be replaced with a new developing device after the printing consumables are consumed. In order for the image forming apparatus to detect whether the developing apparatus is properly mounted on the drum assembly, and detect information such as whether the developing apparatus is new or old, the developing apparatus is provided with a detected assembly, the detected assembly may touch a detecting member in the image forming apparatus to enable the image forming apparatus to detect whether the developing apparatus is properly mounted, and the detected member may also preset different touch times, touch speeds, time duration of each touch to enable the image forming apparatus to detect various information (such as new or old, model, capacity, etc.), but the detected member makes a complicated touch action, a large number of transmission structures are required to achieve (for example, a plurality of gear stack designs perform transmission, occupy a large space), which hinders miniaturization of the developing apparatus.

Disclosure of Invention

According to an aspect of the present utility model, there is provided a developing device detachably mountable to an image forming apparatus, comprising:

a cartridge for storing a developer, the cartridge having a first end and a second end in a first direction and a third end and a fourth end in a second direction;

a developing roller rotatably supported at a third end of the cartridge body, an axis of the developing roller extending in a first direction;

a transmission assembly for receiving and transmitting a driving force of the image forming apparatus;

the detected component comprises a driving component and a detected piece, the detected piece can be arranged on the box body in a movable way relative to the box body, and the detected piece comprises a driven end and a detected end; the driving component receives the driving force motion of the transmission component and acts with the driven end to enable the detected piece to move, and then the detected end triggers the detected piece in the image forming device.

In some embodiments, the driving assembly includes a slider slidably disposed on the case, the slider including at least one driving protrusion capable of pushing the driven end to move the inspected member when the slider moves.

In some embodiments, the drive assembly further comprises a first drive wheel, a second drive wheel, and a linkage;

the first driving wheel receives the driving force of the driving assembly to rotate, and the connecting rod group is connected with the first driving wheel and the second driving wheel, so that the second driving wheel is driven to rotate through the connecting rod group when the first driving wheel rotates.

In some embodiments, one of the second drive wheel and the slider is provided with a drive protrusion, the other one is provided with a drive recess cooperating with the drive protrusion;

when the second driving wheel rotates, the driving convex part is embedded into the driving concave part, and then the sliding part is driven to move.

In some embodiments, the linkage includes a plurality of first links having first and second drive ends, the axes of the first and second drive ends not overlapping;

the first transmission ends are arranged away from the circle center of the first transmission wheel, and a plurality of first transmission ends are positioned on the same circumference;

the second transmission ends deviate from the circle center of the second transmission wheel, and a plurality of second transmission ends are positioned on the same circumference.

In some embodiments, the drive assembly includes a rotating member, a slider, and a second link;

the rotating piece receives the driving force rotation of the transmission assembly;

the sliding block is arranged on the box body in a sliding manner, and the projection of the sliding block and the projection of the sliding piece are at least partially overlapped in the sliding direction of the sliding block;

the second connecting rod is provided with a first connecting end and a second connecting end, and the first connecting end is rotatably connected to the eccentric position of the rotating piece; the second connecting end is rotatably connected to the sliding block;

when the rotating piece rotates, the second connecting rod drives the sliding block to slide, so that the sliding piece is pushed to move.

In some embodiments, the slider and the slide both move in a second direction;

the slider has a pushed protrusion that at least partially coincides with a projection of the slider in a second direction, and the pushed protrusion is closer to the third end than the slider in the second direction.

In some embodiments, the driving assembly includes a rotation transmission member and a translation transmission member, the rotation transmission member receives the driving force of the transmission assembly to rotate, the rotation transmission member is provided with a threaded shaft, the translation transmission member is in threaded connection with the threaded shaft, and the rotation transmission member drives the translation transmission member to move through threads when rotating, so that the driven end is pushed to rotate the detected member.

In some embodiments, the translation transmission member comprises a threaded sleeve and a limiting portion, the threaded sleeve being threadably connected to the threaded shaft;

one end of the limiting part is connected with the limiting part, and a limiting hole is formed in the limiting part;

the box body is provided with a limit column extending along a first direction, and the limit column is inserted into the limit hole, so that when the translation transmission piece is driven by the threads of the rotation transmission piece, the translation transmission piece moves along the limit column in the first direction.

In some embodiments, the translation transmission piece comprises a contact part, the contact part is connected to the other end of the limiting part, and a contact protrusion is arranged on the contact part;

a driven protrusion is arranged on the driven end of the detected piece, and the contact protrusion is overlapped with a projection part of the driven protrusion in a third direction intersecting with the first direction and the second direction;

when the translation transmission piece is driven to move along the first direction, the contact protrusion pushes the driven protrusion to enable the detection piece to rotate.

In some embodiments, the detected member is rotatably disposed on the case, and the rotation axis of the detected member is located between the driven end and the detected end in the first direction;

The rotation axis of the detected piece extends along the second direction.

In some embodiments, the projection of the detected end in the first direction is spaced apart from the projection of the developer roller.

The utility model has the beneficial effects that: the detected component of the developing device has the advantages of simple structure, convenient assembly and stable operation, and is beneficial to miniaturization of the developing device.

Drawings

FIG. 1 is a front view of a developing device according to a first embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a developing device according to a first embodiment of the present utility model;

FIG. 3 is a schematic view of an exploded view of a first end of a case according to an embodiment of the utility model;

fig. 4 is a schematic perspective view of a first end of a case according to an embodiment of the utility model;

FIG. 5 is a right side view of a first end of a case according to an embodiment of the present utility model;

FIG. 6 is a schematic view of an exploded view of a second end of the case according to the first embodiment of the present utility model;

FIG. 7 is a schematic perspective view of a second end of the case according to the first embodiment of the present utility model;

FIG. 8 is a schematic perspective view of a slider according to a first embodiment of the present utility model;

FIG. 9 is a schematic perspective view of a first driving wheel, a second driving wheel and a connecting rod set according to a first embodiment of the present utility model;

FIG. 10 is a schematic perspective view of a first driving wheel, a second driving wheel and another angle of a connecting rod set according to the first embodiment of the present utility model;

FIG. 11 is a schematic structural diagram of a detected member in a first state according to a first embodiment of the present utility model;

FIG. 12 is a schematic structural diagram of a detected member in a second state according to the first embodiment of the present utility model;

FIG. 13 is a schematic perspective view of a second end of the second case according to the second embodiment of the present utility model;

FIG. 14 is an exploded perspective view of a second end of the second case according to the second embodiment of the present utility model;

FIG. 15 is a schematic view of a partial enlarged structure at A in FIG. 14;

fig. 16 is a schematic perspective view of a second end of the case when the detected member is in the first state in the second embodiment of the present utility model;

FIG. 17 is a schematic perspective view of a second end of the case when the detected member is in the second state in the second embodiment of the present utility model;

fig. 18 is a schematic perspective view of a sliding member according to a second embodiment of the present utility model;

FIG. 19 is a schematic perspective view of a third embodiment of the present utility model with the second end of the second cover removed;

fig. 20 is a schematic perspective view of a detected member in a third embodiment of the present utility model;

FIG. 21 is a schematic perspective view of a translation driving member according to a third embodiment of the present utility model;

fig. 22 is a schematic perspective view of a rotary driving member according to a third embodiment of the present utility model.

Detailed Description

The present utility model will now be described in further detail with reference to the accompanying drawings, wherein the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either fixedly attached, detachably attached, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the above description, descriptions of the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Example 1

As shown in fig. 1 to 12, the present embodiment discloses a developing device that can be detachably mounted on a drum assembly in an image forming apparatus, the developing device including a cartridge 1, a developing assembly, a transmission assembly, a recognition assembly, a detected assembly, a power supply assembly, a first protective cover 111, and a second protective cover 121.

In the following description of the direction, the left side of the drawing is left, the right side of the drawing is right, the upper side of the drawing is up, the lower side of the drawing is down, the near side of the drawing is front, and the far side of the drawing is back when viewed in the direction perpendicular to the drawing. The left-right direction is an embodiment of the first direction, the front-back direction is an embodiment of the second direction, and the up-down direction is an embodiment of the third direction.

As shown in fig. 1 and 2, the cartridge 1 has a housing chamber for housing developer therein, the cartridge 1 has a first end 11 and a second end 12 disposed opposite to each other in a first direction, the cartridge 1 has a third end 13 and a fourth end 14 disposed opposite to each other in a second direction, and the cartridge 1 has a fifth end 15 and a sixth end 16 disposed opposite to each other in the third direction. The box body 1 is provided with a powder outlet, the powder outlet is positioned at a third end 13, the box body 1 is provided with a handle, and the handle is positioned at a fourth end 14.

As shown in fig. 1 and 2, the developing assembly includes a developing roller 131, a powder feeding roller, and a stirring frame, and the developing roller 131, the powder feeding roller, and the stirring frame are rotatably installed in the accommodating chamber between the first end 11 and the second end 12. The rotation axes of the developing roller 131, the powder feeding roller, and the stirring frame all extend in the first direction. The developing roller 131 is disposed at the powder outlet. The toner feed roller is disposed immediately adjacent to the developing roller 131. The toner feed roller is closer to the fourth end 14 of the cartridge 1 than the developing roller 131. The stirring frame is used for stirring the developer in the accommodating cavity to charge the developer and prevent the developer from caking.

As shown in fig. 3 to 5, the transmission assembly is disposed at the first end 11, and the transmission assembly includes a driving part rotatably mounted on the first end 11 of the case 1, and a rotation axis of the driving part is parallel to the first direction. The driving part includes a first driving gear 22, a second driving gear 23, and a power receiving part 21 coaxially integrally formed, the second driving gear 23 being located between the first driving gear 22 and the power receiving part 21 in a first direction, the first driving gear 22 being closer to the first end 11 of the case 1 than the power receiving part 21 in the first direction. The power receiving portion 21 is for coupling with a power output shaft on the image forming apparatus to receive power output from the image forming apparatus.

As shown in fig. 3 to 5, the transmission assembly further includes a developing roller gear 24, a powder feeding roller gear 25, a stirring gear 26, a first idler gear 27, and a second idler gear 28, and the developing roller gear 24 is coaxially and fixedly mounted at one end of the developing roller 131 near the first end 11 of the cartridge 1. The powder feeding roller gear 25 is coaxially and fixedly arranged at one end of the powder feeding roller close to the first end 11 of the box body 1. The stirring gear 26 is coaxially and fixedly mounted at one end of the stirring frame near the first end 11 of the box body 1. The central axes of the first idler 27 and the second idler 28 are parallel to the first direction. A first idler 27 and a second idler 28 are rotatably mounted at the first end 11 of the cassette 1. The central axes of the first idler gear 27 and the second idler gear 28 are located between the central axis of the stirring gear 26 and the central axis of the driving portion in the second direction.

As shown in fig. 3 to 5, the developing roller gear 24 and the toner feeding roller gear 25 are engaged with the first driving gear 22. The first idler gear 27 is meshed with the second drive gear 23, the second idler gear 28 is meshed with the first idler gear 27, and the stirring gear 26 is meshed with the second idler gear 28. The engagement may be direct engagement or indirect engagement.

As shown in fig. 3 to 5, the rotation axis of the driving part is closer to the fifth end 15 and the fourth end 14 of the cartridge 1 than the rotation axis of the developing roller 131, the rotation axis of the driving part is closer to the fifth end 15 and the fourth end 14 of the cartridge 1 than the rotation axis of the powder feeding roller, and the rotation axis of the driving part is closer to the third end 13 and the fifth end 15 of the cartridge 1 than the rotation axis of the stirring frame.

As shown in fig. 6 and 7, the detected component includes a detected member 4 and a driving component, the driving component receives the power of the driving part and drives the detected member 4 to move between a first state and a second state, the detected member 4 is located at the second end 12 of the box body 1, the detected member 4 is provided with a detected end 41, and the second protecting cover 121 is provided with an opening for the detected end 41 to extend. In the first state, the detected end 41 is not in contact with the detection piece in the image forming apparatus. In the second state, the detected end 41 touches the detecting member in the image forming apparatus, so that the developing device is detected by the image forming apparatus.

As shown in fig. 6 and 7, in the second direction, the detected end 41 is closer to the fourth end 14 of the cartridge 1 than the rotation axis of the developing roller 131 and the rotation axis of the toner feeding roller. In the second direction, the detected end 41 is closer to the third end 13 of the cartridge 1 than the rotational axis of the agitator. The projection of the detected end 41 in the first direction is separated from the projection of the developing roller 131, that is, the projections of the detected end 41 in the first direction do not overlap.

As shown in fig. 6 and 7, the second end 12 of the box 1 is detachably and fixedly provided with a supporting frame 122, the supporting frame 122 is provided with a supporting hole for inserting the developing roller 131 and the powder feeding roller, one surface of the supporting frame 122 far away from the box 1 in the first direction is integrally formed with a supporting seat 1221, the detected piece 4 is rotatably mounted on the supporting seat 1221, and the rotation axis of the detected piece 4 extends along the second direction. The detected member 4 has a driven end 42. In the first direction, the rotation axis of the inspected member 4 is located between the driven end 42 and the inspected end 41, so that the driven end 42 and the inspected end 41 have opposite movement tracks when the inspected member 4 rotates. The support base 1221 is integrally formed with a first support surface, and an elastic member 43 is installed between the first support surface and the driven end 42, where the elastic member 43 is used to make the detected member 4 have a tendency to recover the first state.

As shown in fig. 6 to 8, the driving assembly includes a sliding member 9, where the sliding member 9 is movably disposed on the box 1, and when the sliding member 9 moves, the driven end 42 of the detected member 4 can be touched to rotate the detected member 4. Specifically, the support frame 122 is integrally formed with a second supporting surface, the second protecting cover 121 is integrally formed with a third supporting surface, and the second supporting surface and the third supporting surface extend along the second direction. The third direction intersects the second support surface and the third support surface. The second and third support surfaces are provided with a slide 9 which is slidable relative to the second and third support surfaces. The second support surface and the third support surface are disposed on the left and right sides of the slider 9 opposite to each other, and contact the lower surface of the slider 9 to provide support for the slider 9. The slide 9 is closer to the fifth end 15 of the cartridge 1 in the third direction. The slider 9 is a plate-like member, and its longitudinal direction extends in the second direction. At least one driving protrusion 91 is integrally formed on the lower surface of the slider 9. When the number of the driving protrusions 91 is plural, the interval between the driving protrusions 91 is set according to the required trigger frequency, and the number of the driving protrusions 91 is set according to the required number of triggers. The present embodiment is described taking two driving protrusions 91 as an example, and the two driving protrusions 91 are provided at intervals in the second direction on the lower surface of the slider 9. The lower surface of the sliding member 9 is further integrally formed with a transmission concave portion 92 recessed upward, the transmission concave portion 92 is in a recessed spherical shape, preferably, the transmission concave portion 92 is a hemispherical groove, the number of the transmission concave portions 92 is plural, and the plural transmission concave portions 92 are arranged at intervals along the second direction. The driving recess 92 is located on the right side of the driving protrusion 91, i.e. the driving recess 92 is closer to the cartridge 1 than the driving protrusion 92.

As shown in fig. 6, 7, 9 and 10, the driving assembly of the detected assembly comprises a first driving wheel 6, a second driving wheel 7 and a connecting rod group. The first driving wheel 6 is arranged at the second end 12 of the box body 1, and the first driving wheel 6 is fixedly connected with the end part of the stirring frame in a coaxial way. The axis of rotation of the second drive wheel 7 extends in a first direction. The linkage is located between the first drive wheel 6 and the second drive wheel 7 in a first direction. The connecting rod group at least comprises three first connecting rods 8, the first connecting rods 8 are provided with first transmission ends 81 and second transmission ends 82, the axes of the first transmission ends 81 and the second transmission ends 82 are along the first direction, but the axes of the first transmission ends 81 and the second transmission ends 82 are not coincident in the first direction. The first driving end 81 is rotatably connected with the left end face (end face far away from the box body 1) of the first driving wheel 6, and the second driving end 82 is rotatably connected with the right end face (end face close to the box body 1) of the second driving wheel 7. The first driving ends 81 of the first connecting rods 8 are arranged offset from the circle center of the first driving wheel 6, and the first driving ends 81 of the first connecting rods 8 are all positioned on the same circumference. The second driving end 82 is deviated from the center of the second driving wheel 7, and the second driving ends 82 of the plurality of first connecting rods 8 are all positioned on the same circumference. The first driving wheel 6, the second driving wheel 7 and the connecting rod group form a parallel eccentric coupling.

The second protecting cover 121 is integrally formed with a support column, and the second driving wheel 7 is rotatably mounted on the support column. The second driving wheel 7 has a driving protrusion 71 integrally formed on its circumferential surface, the driving protrusion 71 is spherical, the driving protrusion 71 is matched with the driving recess 92, the driving protrusion 71 can be inserted into the driving recess 92, preferably, the driving protrusion 71 is a hemispherical protrusion, and the driving protrusions 71 are uniformly distributed on the circumferential surface of the second driving wheel 7. When the second driving wheel 7 rotates, the driving convex part 71 is driven to do circular motion, and the driving convex part 71 is inserted into the driving concave part 92 to drive the sliding part 9 to move. Alternatively, a transmission concave part may be provided on the second transmission wheel 7, and a transmission convex part matched with the transmission concave part may be provided on the sliding member 9, so that the same driving function may be realized. Alternatively, the driving recess and the driving protrusion may be other shapes.

The rotation axis of the second transmission wheel 7 is closer to the developing roller 131 than the rotation axis of the first transmission wheel 6 in the second direction. Compared with the case where the transmission convex portion 71 is directly provided on the first transmission wheel 6, the present embodiment adopts such a manner that the fitting position of the transmission convex portion 71 and the transmission concave portion 92 is closer to the developing roller 131 in the second direction, so that the slider 9 can be designed to be shorter in the second direction, thereby achieving miniaturization of the developing device.

The parallel eccentric coupling structure formed by the first driving wheel 6, the second driving wheel 7 and the connecting rod group can also replace all or part of the gear structure of the driving component at the first end 11 of the box body 1 so as to realize the driving effect.

The upper cover 123 is mounted on the upper side of the second protecting cover 121, and the upper cover 123 is detachably mounted on the second protecting cover 121 in a clamping manner. The upper cover 123 serves to limit the slider 9 in the third direction.

As shown in fig. 6 and 11, the power supply assembly includes a conductive member, which is located at the second end 12 of the case 1 and has an electric receiving surface 5 thereon, and further has a first power supply terminal electrically connected to one end of the developing roller 131 near the second end 12 of the case 1 and a second power supply terminal electrically connected to one end of the powder feeding roller near the second end 12 of the case 1. The electricity receiving surface 5 is used to contact with a power supply portion on the image forming apparatus to receive the electric power output from the image forming apparatus, and to transmit the electric power to the developing roller 131 and the toner feeding roller to form a bias between the developing roller 131 and the toner feeding roller.

The electric receiving surface 5 is closer to the fourth end 14 of the cartridge 1 than the rotation axis of the developing roller 131 and the rotation axis of the toner feeding roller in the second direction. The electric receiving surface 5 is closer to the third end 13 of the cartridge 1 than the rotation axis of the agitator frame in the second direction.

As shown in fig. 1 to 3, a first protective cover 111 is detachably fixedly mounted to the first end 11 of the case 1, the first protective cover 111 covering the transmission assembly for protecting the transmission assembly.

As shown in fig. 1, 2 and 6, a second protective cover 121 is detachably and fixedly mounted to the second end 12 of the case 1, the second protective cover 121 serving to protect the components to be tested. The first and second covers 111 and 121 are attached to the first and second ends 11 and 12 of the case 1, respectively, using screws. Alternatively, the connection can be made by means of a buckle or the like.

As shown in fig. 1 to 3, the identification assembly comprises a storage medium 32, an electrical contact surface 3, a holder 31. The storage medium 32 is used for storing data, and the electrical contact surface 3 is used for contacting and electrically connecting with the identification contact in the image forming apparatus. The holder 31 is detachably mounted on the first protective cover 111, and the storage medium 32 and the electrical contact surface 3 are electrically connected and are both mounted on the holder 31. The electrical contact surface 3 is located closer to the rear side of the cartridge 1 than to the central axis of the drive section.

As shown in fig. 1 to 12, the following is the operation of the developing device disclosed in the present embodiment, first, the developing device is mounted to a drum assembly in an image forming apparatus. The driving unit receives power output from the image forming apparatus and drives the developing roller 131, the powder feeding roller, and the agitator to rotate. The stirring frame drives the first driving wheel 6 to rotate clockwise in fig. 7, the first driving wheel 6 drives the second driving wheel 7 to do circular motion through the connecting rod group, and the second driving wheel 7 drives the driving convex part 71 to do circular motion. The movement track of the driving convex portion 71 coincides with the driving concave portion 92, so that the driving convex portion 71 is inserted into the driving concave portion 92 through the matching position with the driving concave portion 92 during the movement process, and the sliding member 9 is driven to slide forward along the second direction. The sliding member 9 drives the driving protrusion 91 to slide forward, the driving protrusion 91 contacts with the driven end 42 of the detected member 4 to apply pressure to the driven end 42 of the detected member 4, so that the driven end 42 is pressed down to compress the elastic member 43, and meanwhile, the detected end 41 swings upward to trigger the detecting member in the image forming apparatus, and at this time, the detecting member is in the second state.

The sliding member 9 then continues to move forward to bring the driving protrusion 91 to a position away from the driven end 42, so that the driving protrusion 91 no longer applies pressure to the driven end 42, and at this time, under the action of the elastic member 43, the detected end 41 is lifted up, so that the detected member 4 returns to the first state. With continued movement of the slider 9, the slider 9 brings the second driving protrusion 91 into contact with the detected end 41, so that the detected piece 4 moves again to the second state and triggers the detecting piece in the image forming apparatus again. Then, as the slider 9 continues to move, the second driving protrusion 91 no longer applies pressure to the driven end 42, and the detected member 4 returns to the first state again under the action of the elastic member 43. So that the detected end 41 triggers the detecting member twice, so that the image forming apparatus detects the developing device. Then, with the movement of the slider 9, the transmission concave portion 92 is completely separated from the movement locus of the transmission driving protrusion 91, so that the transmission driving protrusion 91 cannot be inserted into the transmission concave portion 92 any more, and the movement of the slider 9 is stopped.

Compared with the prior art, the detected component of the developing device does not need to be provided with a plurality of gears for transmission, can realize the detection function with fewer parts, has a simple structure, is convenient to assemble and stable in operation, and is beneficial to miniaturization of the developing device.

In other embodiments, the inspected member 4 may be configured to move linearly, such as in a left-right direction or up-down direction.

Example two

As shown in fig. 13, this embodiment discloses another developing device, which is different from the first embodiment in that: the structure of the tested components is different.

In this embodiment, the detected component includes a driving component and a detected member 4, and the structure and operation manner of the detected member 4 are the same as those of the first embodiment, and are not described herein again.

As shown in fig. 14 and 19, in the present embodiment, the slider 9 is slidably disposed between the support frame 122 and the second protecting cover 121, specifically, the support frame 122 is integrally formed with a first guide rail 1222, and the second protecting cover 121 is integrally formed with a second guide rail. The first rail 1222 and the second rail extend in a second direction. The second rail is provided with a slide 9 which is slidable relative to the second rail. The slider 9 further comprises a pushed protrusion 93. The protrusion is integrally formed on the right side wall of the slider 9 along the first direction. The pushed projection 93 protrudes rightward from the right side wall of the slider 9. The pushed protrusion 93 protrudes into the first rail 1222 and is slidable along the first rail 1222. The first rail 1222 is positioned on the right side of the slider 9, the second rail is positioned on the left side of the slider 9, the first rail 1222 provides support for the lower surface of the pushed protrusion 93, and the second rail provides support for the lower surface of the slider 9. The slide 9 is closer to the fifth end 15 of the cartridge 1 in the third direction. At least one driving protrusion 91 is integrally formed on the lower surface of the slider 9. When the number of the driving protrusions 91 is plural, the interval between the driving protrusions 91 is set according to the required trigger frequency, and the number of the driving protrusions 91 is set according to the required number of triggers. The present embodiment is described taking two driving protrusions 91 as an example.

As shown in fig. 14 to 16, the driving assembly includes a rotating member 61, a second link 62, and a slider 64, and the rotating member 61 has a disk shape. The rotating member 61 is fixedly mounted on the end of the stirring frame near the second end 12 of the cartridge 1, the axis of rotation of the rotating member 61 being coaxial with the stirring frame. The second link 62 has a first connecting end rotatably connected to an eccentric position on the left end surface of the rotary member 61 and a second connecting end. A slider 64 is rotatably connected to the second connection end, and the slider 64 is slidably mounted in the first rail 1222 relative to the first rail 1222. The slider 64 is farther from the developing roller 131 than the pushed protrusion 93 in the second direction. The rotating member 61 and the second link 62 constitute a crank second link 62 mechanism. So that when the rotating member 61 rotates, the second link 62 drives the slider 64 to reciprocate in the second direction in the first rail 1222.

As shown in fig. 14, an upper cover 123 is mounted on the upper side of the second protecting cover 121, and the upper cover 123 is detachably mounted on the second protecting cover 121 in a clamping manner. The upper cover 123 serves to limit the slider 9 in the third direction.

As shown in fig. 14 to 17, the following is the operation of the developing device disclosed in the present embodiment, first, the developing device is mounted to a drum assembly in an image forming apparatus. The driving unit receives power output from the image forming apparatus and drives the developing roller 131, the powder feeding roller, and the agitator to rotate. The stirring frame drives the rotating member 61 to rotate clockwise in fig. 5, the rotating member 61 drives the first connecting end of the second connecting rod 62 to perform circular motion, and the second connecting end of the second connecting rod 62 drives the sliding block 64 to perform reciprocating linear motion in the first guide rail 1222 in the second direction. When the slider 64 slides forward, the slider 64 pushes the pushed protrusion 93 on the slider 9, so that the pushed protrusion 93 drives the slider 9 to slide forward in the second direction. The sliding member 9 drives the driving protrusion 91 to slide forward, the driving protrusion 91 contacts with the driven end 42 of the detected member 4 to apply pressure to the driven end 42 of the detected member 4, so that the driven end 42 is pressed down to compress the elastic member 43, and meanwhile, the detected end 41 swings upward to trigger the detecting member in the image forming apparatus, and at this time, the detecting member is in the second state.

Then, as the sliding member 9 continues to move forward, the sliding member 9 drives the driving protrusion 91 to move to a position away from the driven end 42, so that the protrusion no longer applies pressure to the driven end 42, and at this time, under the action of the elastic member 43, the detected end 41 is lifted up, so that the detected member 4 returns to the first state. With continued movement of the slider 9, the slider 9 brings the second driving protrusion 91 into contact with the detected end 41, so that the detected piece 4 moves again to the second state and triggers the detecting piece in the image forming apparatus again. Then, as the slider 9 continues to move, the second driving protrusion 91 no longer applies pressure to the driven end 42, and the detected member 4 returns to the first state again under the action of the elastic member 43. So that the detected end 41 triggers the detecting member twice, so that the image forming apparatus detects the developing device.

Then, with the movement of the slider 9, the slider 64 starts to slide backward after moving to the limit position, and further, the slider 9 cannot be pushed any further. So that the slide 9 stops moving.

In the prior art, the second end 12 of the box body 1 is provided with a plurality of gears for transmission, and the space of the second end 12 of the box body 1 is limited, so that the gears must be stacked for transmission, and the second end 12 of the box body 1 has large volume and complex structure. While the developing device disclosed in this embodiment is provided with only one disc-shaped rotary 61 at the second end 12 of the cartridge body 1, stacking is not required. Simple structure, stable operation, is favorable to developing device's miniaturization.

Other structures of the developing device of the present embodiment are the same as those of the first embodiment, and will not be described here again.

Example III

The present embodiment provides still another developing device, which is different from the first and second embodiments in that: the structure of the tested components is different.

As shown in fig. 19, in this embodiment, the detected component includes a driving component and a detected member 4, the driving component receives the driving force of the driving part to drive the detected member 4 to move between a first state and a second state, the detected member 4 is located at the second end 12 of the box 1, the detected member 4 has a detected end 41, and the second protecting cover 121 is provided with an opening for the detected end 41 to extend. In the first state, the detected end 41 is not in contact with the detection piece in the image forming apparatus. In the second state, the detected end 41 touches the detecting member in the image forming apparatus, so that the developing device is detected by the image forming apparatus.

In the second direction, the detected end 41 is closer to the fourth end 14 of the cartridge 1 than the rotation axis of the developing roller 131 and the rotation axis of the toner feeding roller. In the second direction, the detected end 41 is closer to the third end 13 of the cartridge 1 than the rotational axis of the agitator.

As shown in fig. 19 and 20, the second end 12 of the box 1 is detachably and fixedly provided with a supporting frame 122, the supporting frame 122 is provided with a supporting hole for inserting the developing roller 131 and the powder feeding roller, the left end surface of the supporting frame 122 is integrally formed with a supporting seat 1221, the detected member 4 is integrally formed with a pivoting part 44, the pivoting part 44 is rotatably mounted on the supporting seat 1221, and the rotation axis of the detected member 4 extends along the second direction. The object 4 has a driven end 42 and an arm 41a. In the first direction, the pivot portion 44 is located between the driven end 42 and the detected arm 41a. The detected end 41 is located at an end of the detected arm 41a away from the cartridge 1 in the first direction. In the first direction, the driven end 42 is closer to the cartridge 1 than the detected arm 41a. The rear sidewall of the driven end 42 is integrally formed with a first driven protrusion 421 and a second driven protrusion 422 extending in the second direction. The first driven protrusion 421 may be disposed closer to the cartridge 1 than the second driven protrusion 422 in the first direction, and the number of driven protrusions may be set more or less according to the number of times of triggering required. The support base 1221 is integrally formed with a first support surface, and an elastic member 43 is installed between the first support surface and the driven end 42, where the elastic member 43 is used to make the detected member 4 have a tendency to recover the first state.

As shown in fig. 19 and 22, the drive assembly includes a rotary transmission member 60 and a translational transmission member 70. The rotary transmission member 60 includes a coaxially integrally formed boss 65 and a threaded shaft 66. The sleeve 65 is closer to the case 1 than the threaded shaft 66 in the first direction. The sleeve 65 is fixedly mounted to the end of the mixer housing through a D-shaped port 651 and rotates with the mixer housing. The threaded shaft 66 is provided with threads on its surface.

As shown in fig. 19 and 21, the translation transmission member 70 includes a threaded sleeve 72, a limiting portion 73, and a contact portion 74, and the threaded sleeve 72, the limiting portion 73, and the contact portion 74 may be integrally formed or separately formed and connected by welding, adhering, or fastening. In the second direction, the stopper 73 is located between the screw sleeve 72 and the contact portion 74, and the screw sleeve 72 is farther from the developing roller 131 than the contact portion 74. The threaded sleeve 72 is coaxially threadedly coupled to the threaded shaft 66. The limiting part 73 is connected with the circumferential surface of the thread bush 72, and a limiting hole 731 is formed in the limiting part 73. The second end 12 of the case 1 is integrally formed with a stopper 124 along the first direction. The stopper post 124 is disposed coaxially with the stopper hole 731. The stopper post 124 is inserted into the stopper hole 731. The stopper 73 is slidable along the stopper post 124. The contact portion 74 is connected to an end of the stopper portion 73 near the developing roller 131 in the second direction, a contact protrusion 741 is integrally formed on the contact portion 74, a projection of the contact protrusion 741 in the third direction coincides with a projection of the first driven protrusion 421 and the second driven protrusion 422 in the third direction, and the contact protrusion 741 is for contact with the first driven protrusion 421 and the second driven protrusion 422. The contact protrusion 741 is provided with an arc surface or an inclined surface for smoother contact. When the speed of the detected end 41 triggering the detecting member in the image forming device is required to be adjusted, the swinging frequency and the swinging speed of the detected end 41 can be changed only by adopting threads with different specifications, and a large number of gears are not required to be adopted for speed regulation, so that the occupation of space is greatly reduced, and the miniaturization of the developing device is facilitated.

As shown in fig. 19 to 22, the following is the operation of the developing device disclosed in the present embodiment, first, the developing device is mounted to a drum assembly in an image forming apparatus. The driving unit receives power output from the image forming apparatus and drives the developing roller 131, the powder feeding roller, and the agitator to rotate. The stirring rack drives the threaded shaft 66 to rotate through the shaft sleeve 65, and the threaded sleeve 72 also has a rotating trend due to friction between threaded surfaces in threaded connection with the threaded sleeve 72 when the threaded shaft 66 rotates. Meanwhile, since the limiting portion 73 is integrally formed with the screw sleeve 72, the limiting portion 73 is limited by the limiting post 124. The threaded sleeve 72 cannot rotate with the threaded shaft 66. Further, upon rotation of the threaded shaft 66, the threaded sleeve 72 translates in a first direction away from the cartridge 1. The threaded sleeve 72 in turn translates the contact portion 74 and the contact protrusion 741 together via the stop portion 73. The contact protrusion 741 is contacted with the first driven protrusion 421 during the movement. Since the surface of the contact protrusion 741 is provided with an inclined surface or an arc surface, a downward pressure is applied to the first driven protrusion 421 during the movement of the contact protrusion 741, so that the first driven protrusion 421 drives the driven end 42 to swing downward, the driven end 42 further drives the pivot portion 44 to rotate, the pivot portion 44 drives the detected arm 41a to swing upward, and the detected end 41 also swings upward to trigger the detecting member in the image forming apparatus, and the detected member 4 moves from the first state to the second state during the movement.

Then, as the contact protrusion 741 moves, the contact protrusion 741 moves away from the first driven protrusion 421, and the contact protrusion 741 no longer applies pressure to the first driven protrusion 421. At this time, under the action of the elastic member 43, the driven end 42 swings upward, and then drives the detected arm 41a to swing downward through the pivot portion 44, and the detected member 4 returns from the second state to the first state in the process.

Then, as the contact protrusion 741 moves, the contact protrusion 741 contacts the second driven protrusion 422, and further applies a downward force to the second driven protrusion 422, again causing the detected member 4 to move from the first state to the second state, thereby causing the detected end 41 to trigger the detected member in the image forming apparatus again.

Then, as the contact protrusion 741 moves, the contact protrusion 741 moves away from the second driven protrusion 422, and the contact protrusion 741 no longer applies pressure to the second driven protrusion 422. At this time, the detected member 4 is moved from the second state to the first state by the elastic member 43, so that the detected end 41 no longer triggers the detecting member in the image forming apparatus.

Finally, along with the movement of the threaded sleeve 72, the threaded sleeve 72 moves beyond the threaded portion on the threaded shaft 66, and at this time, the threaded sleeve 72 cannot be driven by the threaded surface again to generate translation, so that the threaded sleeve 72, the limiting portion 73, the contact portion 74 and the contact protrusion 741 stop moving, and the detected member 4 does not generate state change any more.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

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

2. A developing apparatus according to claim 1, wherein said driving assembly includes a slider slidably provided on said cartridge, said slider including at least one driving projection capable of pushing said driven end to move the detected member when said slider moves.

3. The developing device according to claim 2, wherein the driving assembly further comprises a first driving wheel, a second driving wheel, and a link group;

4. A developing device according to claim 3, wherein one of said second transmission wheel and said slider is provided with a transmission convex portion, and the other is provided with a transmission concave portion which cooperates with said transmission convex portion;

5. A developing device according to claim 3, wherein said link group includes a plurality of first links having first and second driving ends, the axes of said first and second driving ends not overlapping;

6. A developing device according to claim 2, wherein said driving assembly includes a rotary member, a slider, and a second link;

7. The developing device according to claim 6, wherein both the slider and the slider are moved in the second direction;

8. A developing apparatus according to claim 1, wherein said driving assembly includes a rotary transmission member which receives a driving force of said transmission assembly for rotation, said rotary transmission member having a screw shaft, said rotary transmission member being screwed with said screw shaft, said rotary transmission member being rotated to drive said rotary transmission member to move by screw, thereby pushing said driven end to rotate the member to be detected.

9. The developing device according to claim 8, wherein the translation transmission member includes a threaded sleeve and a stopper portion, the threaded sleeve being screwed on the threaded shaft;

10. A developing device according to claim 9, wherein said translation transmission member includes a contact portion connected to the other end of said stopper portion, said contact portion being provided with a contact protrusion;

At least one driven protrusion is arranged on the driven end of the detected piece, and the contact protrusion is overlapped with the projection part of the driven protrusion in a third direction intersecting with the first direction and the second direction;

11. A developing apparatus according to any one of claims 1-10, wherein said detected member is rotatably provided on the cartridge, and a rotation axis of said detected member is located between said driven end and the detected end in the first direction;

the rotation axis of the detected piece extends along the second direction.

12. The developing device according to claim 11, wherein the projection of the detected end in the first direction is spaced apart from the projection of the developing roller.