CN215376094U - Developing box - Google Patents

Abstract

The utility model discloses a developing box, which is detachably arranged in an imaging device along a first direction, the imaging device comprises a door cover, a chip contact is arranged on the door cover, and the developing box comprises: a chip; a developing roller; the mounting groove is provided with a first clamping gap; the conductive connecting piece comprises a limited part, and the limited part can be arranged in the first clamping gap along a second direction and can be pulled away from the first clamping gap along a direction deviating from the second direction; the restricted portion is held by the first holding gap. Compared with the prior art, the limited part can be arranged in the first clamping gap along the second direction, and can be pulled away from the first clamping gap along the direction deviating from the second direction, the direct insertion type structure is used for installing the conductive connecting piece, the matching similar to a wedge-shaped buckle is not needed, the structure is simple and delicate, the disassembly is convenient and rapid, and the technical problem that the conductive connecting piece is difficult to disassemble in the prior art is solved.

Description

Developing box

Technical Field

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

Background

Electrophotographic image forming apparatuses, which form an image on a recording material using an electrophotographic image forming process and using a developer, are exemplified by electrophotographic copying machines, electrophotographic laser printers, and the like. Generally, an electrophotographic image forming apparatus has a detachable developing cartridge, and such a developing cartridge can be divided into two types, i.e., an integral cartridge and a separate cartridge. Wherein the separate body cartridge is provided separately from the drum assembly having the photosensitive drum, and is detachably mountable to the drum assembly. Such a developing cartridge (i.e., a split cartridge) generally includes: the developing box is in direct contact with a chip contact on the electronic photographic imaging device through a chip terminal to realize communication.

As shown in fig. 1, in an image forming apparatus 1, a door 11 is provided with a chip contact 13, and the chip contact 13 includes a side surface and an end surface located at an end of the chip contact 13.

There is a developing cartridge usable with the image forming apparatus, the developing cartridge including a chip, a conductive connecting member 20 for connecting the chip, and a mounting groove for mounting the conductive connecting member, referring to fig. 2, the conductive connecting member is provided with a first contact portion 201 for contacting a terminal of the chip, a second contact portion 202 for contacting a side surface of a contact of the chip on the door cover, a connecting portion 203 for connecting the first contact portion 201 and the second contact portion 202, and a stopper portion 204, the stopper portion 204 is for restricting movement of the conductive connecting member 20, the stopper portion 204 is provided with a positioning hole 2041, the positioning hole 2041 is engaged with a stopper protrusion in the mounting groove to restrict movement of the conductive connecting member in a mounting direction of the process cartridge, the developing cartridge of such a structure, the structure is complex, the conductive connecting piece is connected with the limiting protrusion through the positioning opening 2041, so that the conductive connecting piece is difficult to disassemble, and can be taken out only by extruding the conductive connecting piece through a large external force.

Therefore, when the conductive connecting member needs to be replaced, for example, the conductive connecting member is exposed outside the housing for a long time, gets damp and rusted, the conductive connecting member is in contact with the chip contact for a long time and is worn and reused in the recycling of the developing cartridge, the situation that the conductive connecting member is not easily detached occurs, and meanwhile, labor and material costs are increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a developing box with a conductive connecting piece convenient to disassemble, which aims to solve the technical problems in the prior art.

The present invention provides a developing cartridge detachably mountable to an image forming apparatus including a door cover on which chip contacts are provided in a first direction, the developing cartridge comprising:

a chip;

a developing roller;

the mounting groove is provided with a first clamping gap;

the conductive connecting piece is arranged in the mounting groove and is electrically connected with the chip, the conductive connecting piece comprises a limited part, and the limited part can be arranged in the first clamping gap along a second direction and can be pulled away from the first clamping gap along a direction deviating from the second direction;

the limited part is clamped by the first clamping gap to limit the movement of the conductive connecting piece in the first direction and the direction departing from the first direction.

In the developing cartridge according to the above aspect, it is preferable that the mounting groove is provided on a rear side of the developing cartridge in the first direction, and includes a first groove wall surface, a second groove wall surface, a third groove wall surface, and a fourth groove wall surface, the first groove wall surface and the second groove wall surface are provided to face each other in the first direction, the first groove wall surface is provided on a rear side of the second groove wall surface, and the third groove wall surface and the fourth groove wall surface are provided to face each other in an axial direction of the developing roller;

the mounting groove is convexly provided with a first bulge on the third groove wall surface and/or the fourth groove wall surface, and the first clamping gap is formed between the wall surface of the first bulge departing from the first direction and the first groove wall surface;

the conductive connector includes a substrate, and the restricted portion is connected to the substrate.

In the developing cartridge according to the above, preferably, the conductive connecting member includes two first plates disposed opposite to each other in an axial direction of the developing roller, and the two first plates clamp a side surface of the chip contact in a state where the door is closed; the restrained portion includes a second tab extending in the second direction, the second tab being bent from the first tab to be gripped by the first gripping gap.

In the developing cartridge, preferably, the second sheet is located at a rear side of the first sheet in the first direction, and the second sheet is folded back in an arc toward a direction away from the first sheet.

The developing cartridge as described above, wherein preferably, the conductive connecting member includes a third piece and a fourth piece extending in the second direction, and an end of the chip contact abuts against the third piece in a state where the door cover is closed; the fourth lobe is bent from the third lobe to be gripped by the first gripping gap.

The developing cartridge as described above, wherein preferably, the fourth blade is located on a front side of the third blade in the first direction.

In the developing cartridge, it is preferable that a second protrusion is protruded from the third or/and fourth slot wall surface, and the substrate abuts against the second protrusion in the second direction to limit the movement of the conductive connecting member in the second direction.

Preferably, the second groove wall surface is provided with a third protrusion, the third protrusion is provided with a supporting surface, the substrate is connected with a supporting body, and the supporting body is supported on the supporting surface to limit the movement of the conductive connecting member in the second direction.

The developing cartridge as described above, wherein preferably, the outer edge of the substrate is provided with a lug in a protruding manner.

A developing cartridge as described above, wherein it is preferable that the developing cartridge further includes a driving end and a conductive end which are oppositely provided in an axial direction of the developing roller, and the conductive connecting member is close to the conductive end with respect to the driving end; the chip is located at a bottom of the developing cartridge in a state where the developing cartridge is mounted to the image forming apparatus.

Compared with the prior art, the limited part can be arranged in the first clamping gap along the second direction, and can be pulled away from the first clamping gap along the direction deviating from the second direction, the direct insertion type structure is used for installing the conductive connecting piece, the matching similar to a wedge-shaped buckle is not needed, the structure is simple and delicate, the disassembly is convenient and rapid, and the technical problem that the conductive connecting piece is difficult to disassemble in the prior art is solved.

Drawings

FIG. 1 is a schematic view of a prior art image forming apparatus;

FIG. 2 is a schematic diagram of a prior art conductive connector;

fig. 3 is an overall structural view of a developing cartridge according to a first embodiment of the present invention;

fig. 4 is a partially exploded view of a developing cartridge according to a first embodiment of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4;

fig. 6 is a schematic structural view of a developing cartridge provided in accordance with one embodiment of the present invention, viewed from another angle;

FIG. 7 is an enlarged view at B in FIG. 6;

fig. 8 is an overall structural view of a developing cartridge provided in the second embodiment of the present invention;

fig. 9 is a partially exploded view of a developing cartridge according to a second embodiment of the present invention;

fig. 10 is an enlarged view at C in fig. 9.

Description of reference numerals:

10-developing cartridge, 10 a-first side, 10 b-second side, 10 c-third side, 10 d-fourth side, 10 e-fifth side, 10 f-sixth side;

20-chip;

30-mounting groove, 30 a-first groove wall surface, 30 b-second groove wall surface, 30 c-third groove wall surface, 30 d-fourth groove wall surface, 31-first opening, 32-second opening, 33-first protrusion, 34-second protrusion, 35-third protrusion, 36-fourth protrusion, 37-first clamping gap, 38-second clamping gap;

40-conductive connector, 41-first sheet, 41 a-first contact surface, 42-second sheet, 43-mounting gap, 44-substrate, 44 a-lug, 45-avoidance slot, 46-elastic cantilever; 47-third panel, 47 a-second contact surface, 48-fourth panel, 49-fifth panel;

50-chip cover;

60-a developing roller;

p-a first direction;

l-a second direction;

in the prior art:

1-imaging equipment, 11-door cover, 13-chip contact, 20-conductive connecting piece, 201-first contact part, 202-second contact part, 203-connecting part, 204-limiting part and 2041-positioning opening.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the utility model.

To better explain the developing cartridge 10 and the image forming apparatus 1 in the present embodiment, reference is now made to the X, Y, Z-axis concept, taking three spatial axes orthogonal to each other as the X-axis, the Y-axis, and the Z-axis.

Referring to fig. 3 and 4, the developing cartridge 10 is substantially rectangular parallelepiped in shape, and has a first side 10a, a second side 10b, a third side 10c, a fourth side 10d, a fifth side 10e, and a sixth side 10f, the first side 10a being disposed opposite the second side 10b, the third side 10c being disposed opposite the fourth side 10d, and the fifth side 10e being disposed opposite the sixth side 10 f.

The first side 10a is provided with a developing roller 60, the rotation axial direction of the developing roller 60 is defined as a Y-axis direction, the installation direction of the developing box 10 is an X-axis direction, and the thickness direction of the developing box 10 is a Z-axis direction; the plane formed by the X axis and the Y axis is an XY plane, and the plane formed by the Y axis and the Z axis is a YZ plane. The plane formed by the X axis and the Z axis is an XZ plane, preferably, the XY plane is positioned on a horizontal plane, and the Z axis is vertical.

The first side 10a and the second side 10b are disposed opposite to each other in the X-axis direction, the first side 10a is located on the + X-axis direction side, the second side 10b is located on the-X-axis direction side, and the + X-axis direction is the first direction P of the developing cartridge 10.

The third side 10c is disposed opposite to the fourth side 10d along the Z-axis direction, the third side 10c is disposed on the + Z-axis direction side, the fourth side 10d is disposed on the-Z-axis direction side, and preferably, the second direction L of the conductive connecting member 40 is disposed along the + Z-axis direction.

The fifth side 10e is disposed opposite to the sixth side 10f in the Y-axis direction, and the fifth side 10e is located on the + Y-axis direction side and the sixth side 10f is located on the-Y-axis direction side. The Y-axis direction is parallel to the rotational axial direction of the developing roller 60.

In order to solve the technical problem that the conductive connection member 40 in the prior art is not easy to detach, the following two embodiments are specifically proposed, and those skilled in the art can make corresponding modifications according to the teachings of the above embodiments.

Example one

As shown in fig. 3 to 7, an embodiment of the present invention provides a developing cartridge 10, detachably mountable to an image forming apparatus 1 in a first direction P, the image forming apparatus 1 can refer to the schematic structural diagram of the related art electrophotographic image forming apparatus shown in fig. 1, and includes a main body portion for accommodating the developing cartridge 10, and a door 11, a retractable chip contact 13 is disposed on the door 11, the chip contact 13 is elastically and telescopically connected by an elastic member (such as a spring, etc.), the chip contact 13 includes two states, one is a natural extension state at the initial position, the chip contact 13 extends outwards, the other is a retraction state after being stressed, when the door cover 11 is closed, the chip contact 13 is compressed by force application, the chip contact 13 is in the retraction state, under the state, the spring in the door cover 11 makes good electrical contact with the circuit board, and the developing cartridge 10 communicates with the electrophotographic image forming apparatus 1 through the chip 20 terminals.

The developing cartridge 10 includes:

and a chip 20, wherein the chip 20 is arranged on the fourth side 10d of the developing box 10 and is close to the sixth side 10f relative to the fifth side 10 e. The developing cartridge 10 further includes a driving end (i.e., an end provided with a driving part receiving a driving force from an image forming apparatus) and a conductive end (i.e., an end provided with a part receiving power from an image forming apparatus) which are opposite to each other in an axial direction of the developing roller 60, and the conductive connecting member 40 is close to the conductive end opposite to the driving end to reduce vibration interference of the driving end; in a state where the developing cartridge 10 is mounted to the image forming apparatus, the chip 20 is located at the bottom of the developing cartridge 10.

The mounting groove 30 is used for mounting and fixing the conductive connecting member 40, and is provided with a first limiting portion and a second limiting portion, a first opening 31 is formed on the outer wall surface of the developing cartridge 10, the mounting groove 30 is arranged on one side of the developing cartridge 10 departing from the first direction P, preferably, the first opening 31 is located on the wall surface of the second side 10b of the developing cartridge 10 facing one side of the door cover 11, and the first direction P mounted to the imaging device 1 relative to the developing cartridge 10 is located at the rear part of the developing cartridge 10.

A conductive connecting member 40 for electrically connecting the chip 20 and the chip contact 13, wherein the conductive connecting member 40 can be installed in the mounting groove 30 along the second direction L, the conductive connecting member 40 is made of a conductive steel sheet or a conductive rubber having elasticity, and includes a first contact portion, a first restricted portion and a second restricted portion, wherein:

the first contact portion is disposed close to the first opening 31, and in a state where the door cover 11 is closed, the chip contact 13 is in contact with the first contact portion via the first opening 31 to achieve electrical connection; the chip contact 13 is compressed from the initial position to the retracted position, and communication is achieved between the chip 20 and the imaging device 1.

The first limited part can be mounted on the first limited part along a second direction L and can be pulled away from the first limited part along a direction deviating from the second direction, and in a state that the conductive connecting piece 40 is mounted on the mounting groove 30, the first limited part and the first limited part realize limit fit so as to limit the movement of the conductive connecting piece 40 in the first direction P and in the direction deviating from the first direction P; the second limiting portion and the second limited portion realize limit matching, so as to limit the movement of the conductive connecting member 40 in the second direction L. The mounted position of electrically conductive connecting piece 40 in mounting groove 30 is stable, avoids electrically conductive connecting piece 40 to remove on first direction P and second direction L, and electrically conductive connecting piece 40 is stable with the contact of imaging device 1's chip contact 13, and simple structure, and low in manufacturing cost installs electrically conductive connecting piece 40 through cut straightly formula structure, need not the cooperation of similar wedge buckle, and simple structure is exquisite, dismantles convenient and fast.

Referring to fig. 5, the mounting groove 30 is provided on a rear side (i.e., a second side 10b, which is a side close to the door cover 11 when mounted to the image forming apparatus 1) of the developing cartridge 10 in the first direction P, and includes a first groove wall surface 30a, a second groove wall surface 30b, a third groove wall surface 30c, and a fourth groove wall surface 30d, the first groove wall surface 30a and the second groove wall surface 30b being disposed opposite to each other, the first groove wall surface 30a being located on a rear side (i.e., a-X-axis direction side) of the second groove wall surface 30b, the third groove wall surface 30c and the fourth groove wall surface 30d being disposed opposite to each other, and the third groove wall surface 30c being located on a + Y-axis direction side of the fourth groove wall surface 30 d.

In the embodiment, referring to fig. 3, five mounting grooves 30 are provided on the developing cartridge 10 at intervals along the Y-axis direction, and five conductive connecting members 40 can be mounted on the corresponding five mounting grooves 30, and those skilled in the art can know that the number and relative position relationship of the mounting grooves 30 can be changed according to actual situations, and are not limited herein.

Referring to fig. 5 and 7, the first opening 31 is disposed on the second side 10b, the conductive connector 40 includes two oppositely disposed first sheets 41, the first sheets 41 are thin sheets with elasticity, first contact surfaces 41a are formed on opposite sides of the two first sheets 41, a mounting gap 43 is formed between the two first contact surfaces 41a, an inner diameter of the mounting gap 43 may be slightly smaller than an outer diameter of the chip contact 13, when the door 11 is closed, the chip contact 13 extends into the mounting gap 43 through the first opening 31, the chip contact 13 opens the two first sheet members 41, the two first sheet members 41 apply a clamping force to the chip contact 13 in the Y-axis direction, and the two first contact surfaces 41a clamp the side surfaces of the chip contact 13 on the opposite sides to achieve electrical connection.

Referring to fig. 5 and 7, in order to limit the movement of the conductive connecting member 40 in the first direction P, the first limited portion includes two second plates 42, two second plates 42 correspond to two first plates 41 one by one, preferably, the second plates 42 are integrally formed with the first plates 41, a first end of the second plate 42 is connected to a rear side of the first plate 41 (i.e. one end in the-X axis direction, which is a side close to the first opening 31), a second end of the second plate 42 is folded and extended toward a side away from the mounting gap 43, the second plate 42 is an arc-shaped structure, the second plate 42 is closer to the first opening 31 than the first plate 41, the two second plates 42 form an "eight" type structure, and the two second plates 42 can also play a guiding role during the process that the chip contact head 13 extends from the first opening 31 to the mounting gap 43, so that the chip contact 13 is smoothly held by the two first contact surfaces 41 a.

The first limiting portion includes two first protrusions 33, the two first protrusions 33 are symmetrically disposed on the third groove wall surface 30c and the fourth groove wall surface 30d and are disposed close to the first groove wall surface 30a, a first clamping gap 37 is formed between an outer surface of the first protrusion 33 on the-X axis direction side and the first groove wall surface 30a, and an extending direction of the first clamping gap 37 is parallel to the second direction L of the conductive connection member 40.

In the process of mounting the conductive connecting member 40 to the mounting groove 30, the second blade 42 is inserted into the first clamping gap 37 from the top of the first clamping gap 37, and the width of the second blade 42 is adapted to the inner diameter of the first clamping gap 37, so that in the state that the conductive connecting member 40 is mounted to the mounting groove 30, the second blade 42 is clamped in the first clamping gap 37 to limit the movement of the conductive connecting member 40 in the X-axis direction (i.e. to prevent the movement in the first direction P and the direction opposite to the first direction P of the developing cartridge 10), when the conductive connecting member 40 needs to be dismounted, the conductive connecting member 40 only needs to be pulled out to the side opposite to the second direction L, which is convenient and fast.

Further, referring to fig. 5, in order to restrict the movement of the conductive connecting member 40 in the second direction L, the second restricted portion includes a base 44, the base 44 extends in the X-axis direction, and one ends of the two first plate bodies 41 on the-Z-axis direction side are connected to the base 44; the second limiting portion includes two second protrusions 34, the two second protrusions 34 are symmetrically disposed on the third groove wall surface 30c and the fourth groove wall surface 30d, and the substrate 44 abuts against the two second protrusions 34 in a state where the conductive connecting member 40 is mounted in the mounting groove 30, so as to limit the movement of the conductive connecting member 40 in the + Z-axis direction side.

Preferably, the second protrusions 34 and the third protrusions 35 are flush in height, so that the supporting effect on the substrate 44 is more stable. The first projection 33 and the second projection 34 provide a force to one-Z-axis direction side of the substrate 44, so that the substrate 44 is supported on the first projection 33 and the second projection 34, and the conductive connecting member 40 is more stably fixed and is less likely to be displaced in the case of vibrations of the developing cartridge 10 and the image forming apparatus 1.

Furthermore, the mounting groove 30 has a second opening 32 formed on the wall surface of the third side 10c, the conductive connecting member 40 has a second contact portion, and the chip 20 is electrically connected to the second contact portion through the second opening 32. The second opening 32 exposes the first protrusion 33, the second protrusion 34 and the third protrusion 35 to the outside, the conductive connecting member 40 is also inserted into the mounting groove 30 through the second opening 32 and is detached through the second opening 32, after the conductive connecting member 40 is mounted in the mounting groove 30, the second contact portion is exposed at the second opening 32, and the chip 20 is electrically connected with the second contact portion.

In order to protect the chip 20, the developing device further includes a chip protecting cover 50, and specifically, referring to fig. 4, the chip protecting cover 50 covers the chip 20 and is fixed to the developing box 10 in a clamping manner. When the conductive connecting member 40 and the chip 20 are installed, the conductive connecting member 40 can be installed in the installation groove 30, the chip 20 is clamped on the developing box 10, and the chip protecting cover 50 is clamped on the developing box 10 to protect the chip 20.

Further, referring to fig. 5, the second contact portion includes an avoiding groove 45 and an elastic cantilever 46, the avoiding groove 45 penetrates the substrate 44, the elastic cantilever 46 is made of a metal material, a first end of the elastic cantilever 46 is connected to a groove wall of the avoiding groove 45, a second end of the elastic cantilever 46 extends to the + X-axis direction side and the-Z-axis direction side relative to the first end, and a second end of the elastic cantilever 46 protrudes out of the second opening 32 and is electrically connected to the chip 20. The second groove wall 30b is provided with a third protrusion 35, and when the elastic cantilever 46 is subjected to the downward pressing force of the chip 20, the second end of the elastic cantilever 46 moves toward the direction close to the substrate 44 and abuts against the third protrusion 35. The third bump 35 provides a supporting force to the elastic cantilever 46, and the elastic cantilever 46 is clamped by the third bump 35 and the chip 20 together, so that the contact between the terminal of the chip 20 and the conductive connecting member 40 is more stable and reliable.

Further, as shown in fig. 5, in order to facilitate the application of force by the operator, the conductive connecting member 40 is removed by pulling, and the outer edge of the base plate 44 is protruded with a lug 44 a. The lug 44a is provided at an end of the substrate 44 remote from the elastic cantilever 46 and extends toward the-X axis direction, preferably extending beyond the edge of the second side 10b of the developing cartridge 10, so that an operator can grasp the lug 44a and draw the conductive connecting member 40 out of the mounting groove 30.

Example two

The difference between the present embodiment and the first embodiment is the structure of the conductive connecting member 40, wherein, as shown in fig. 8 to 10, the conductive connecting member 40 includes a third body 47, a fourth body 48 and a fifth body 49 in addition to the substrate 44 and the elastic cantilever 46, wherein:

the third plate 47 is also in the form of a thin plate, a first end of the third plate 47 is connected to an end of the substrate 44 on the side of the-X axis direction, a second end of the third plate 47 extends toward the + Z axis direction side with respect to the first end, and a second contact surface 47a is formed on a wall surface of the third plate 47 on the side of the-X axis direction, and the second contact surface 47a is disposed in close contact with the first groove wall surface 30a and exposed through the first opening 31 in a state where the conductive connecting member 40 is mounted in the mounting groove 30.

In the first direction P, the fourth sheet 48 is located at the front side of the third sheet 47, a first end of the fourth sheet 48 is connected to an end of the third sheet 47 located at the + Y axis direction side and/or the-Y axis direction side, and a second end of the fourth sheet 48 extends toward the + X axis direction side relative to the first end, it can be understood that the fourth sheet 48 may not extend exactly along the + X axis direction side, and may also be inclined with respect to the X axis direction.

A first end of the fifth blade 49 (support) is connected to an end of the substrate 44 on the + X-axis direction side, a second end of the fifth blade 49 extends toward the + Z-axis direction side with respect to the first end, and the fifth blade 49 and the third blade 47 are arranged in parallel.

And a fourth protrusion 36 is convexly arranged on the third protrusion 35 of the mounting groove 30 to form a supporting surface of an "L" shaped structure, and the fourth protrusion 36 is far away from the second groove wall surface 30b relative to the third protrusion 35.

In a state where the conductive connector 40 is mounted in the mounting groove 30 in the second direction L, the third piece 47 is inserted into the first clamping gap 37 from the top of the first clamping gap 37, and the fourth piece 48 is clamped in the first clamping gap 37 to limit the movement of the conductive connector 40 in the X-axis direction. The fourth plate 48 abuts against the first projection 33 at one end and the first groove wall surface 30a at the other end, thereby restricting the movement of the conductive connecting member 40 in the X-axis direction (i.e., preventing the movement of the developing cartridge 10 in the first direction P and the direction opposite to the first direction P), and at the same time, allowing the second contact surface 47a to abut against the first groove wall surface 30 a. The second contact surface 47a can be stably electrically connected to the chip contact 13 in a surface contact manner, and continuously provides a compressive force to the chip contact 13, thereby preventing the chip contact 13 from moving from the retracted position to the initial position due to vibrations of the developing cartridge 10 and the image forming apparatus 1. When the conductive connecting piece 40 needs to be detached, the conductive connecting piece 40 only needs to be pulled out to the side opposite to the second direction L, and the detachment is convenient and fast.

The fifth piece 49 abuts against the fourth protrusion 36, and the fourth protrusion 36 provides a force in the-Z direction to the fifth piece 49 to limit the movement of the conductive connecting member 40 in the + Z direction (i.e., prevent the movement in the second direction L of the conductive connecting member 40). Meanwhile, the fifth plate 49 is clamped in the second clamping gap 38 between the second protrusion 34 and the third protrusion 35, one end of the fifth plate 49 abuts against the groove wall surface of the second protrusion 34, and the other end abuts against the opposite groove wall surface of the third protrusion 35, thereby further limiting the movement of the conductive connecting member 40 in the X-axis direction.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.

Claims (10)

1. A developing cartridge detachably mountable to an image forming apparatus in a first direction, the image forming apparatus including a door cover on which a chip contact is provided, the developing cartridge comprising:

a chip;

a developing roller;

the mounting groove is provided with a first clamping gap;

a conductive connecting piece arranged in the mounting groove and electrically connected with the chip,

the conductive connecting piece comprises a limited part, and the limited part can be arranged in the first clamping gap along a second direction and can be pulled away from the first clamping gap along a direction deviating from the second direction;

the limited part is clamped by the first clamping gap to limit the movement of the conductive connecting piece in the first direction and the direction departing from the first direction.

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

in the first direction, the mounting groove is arranged at the rear side of the developing box and comprises a first groove wall surface, a second groove wall surface, a third groove wall surface and a fourth groove wall surface, the first groove wall surface and the second groove wall surface are oppositely arranged along the first direction, the first groove wall surface is positioned at the rear side of the second groove wall surface, and the third groove wall surface and the fourth groove wall surface are oppositely arranged along the axial direction of the developing roller;

the mounting groove is convexly provided with a first bulge on the third groove wall surface and/or the fourth groove wall surface, and the first clamping gap is formed between the wall surface of the first bulge departing from the first direction and the first groove wall surface;

the conductive connector includes a substrate, and the restricted portion is connected to the substrate.

3. A developing cartridge according to claim 2, wherein: the conductive connecting piece comprises two first sheet bodies which are oppositely arranged in the axial direction of the developing roller, and the two first sheet bodies clamp the side surface of the chip contact head in a state that the door cover is closed; the restrained portion includes a second tab extending in the second direction, the second tab being bent from the first tab to be gripped by the first gripping gap.

4. A developing cartridge according to claim 3, wherein: in the first direction, the second sheet body is located on the rear side of the first sheet body, and the second sheet body is turned over towards a direction deviating from the first sheet body to form an arc surface.

5. A developing cartridge according to claim 2, wherein: the conductive connecting piece comprises a third piece body and a fourth piece body which extend along the second direction, and the end part of the chip contact is abutted against the third piece body when the door cover is closed; the fourth lobe is bent from the third lobe to be gripped by the first gripping gap.

6. A developing cartridge according to claim 5, wherein: in the first direction, the fourth lobe is located on a front side of the third lobe.

7. A developing cartridge according to any one of claims 2-6, wherein: and a second protrusion is convexly arranged on the third groove wall surface or/and the fourth groove wall surface, and in the second direction, the substrate abuts against the second protrusion to limit the movement of the conductive connecting piece in the second direction.

8. A developing cartridge according to any one of claims 2-6, wherein: and a third bulge is convexly arranged on the wall surface of the second groove, a supporting surface is formed on the third bulge, a supporting body is connected to the substrate, and the supporting body is supported on the supporting surface so as to limit the movement of the conductive connecting piece in the second direction.

9. A developing cartridge according to any one of claims 2-6, wherein: the outer edge of the substrate is convexly provided with a lug.

10. A developing cartridge according to any one of claims 2-6, wherein: the developing box is also provided with a driving end and a conductive end which are oppositely arranged in the axial direction of the developing roller, and the conductive connecting piece is close to the conductive end relative to the driving end; the chip is located at a bottom of the developing cartridge in a state where the developing cartridge is mounted to the image forming apparatus.

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