WO2015158274A1

WO2015158274A1 - Processing cartridge

Info

Publication number: WO2015158274A1
Application number: PCT/CN2015/076705
Authority: WO
Inventors: 丁戈明; 曾丽坤
Original assignee: 珠海艾派克科技股份有限公司
Priority date: 2014-04-16
Filing date: 2015-04-16
Publication date: 2015-10-22
Also published as: CN105093889A

Abstract

A processing cartridge (C) comprising a development unit (10), a toner frame (90), and a power receiving unit (400). The power receiving unit (400) is used for meshing with a driving unit (500) on an electronic development device and for receiving a rotational driving force and comprises a meshing part (410), a connecting part (420), and a transferring part (450). The power receiving unit (400) is provided with a first action position, a second action position, and a third action position respectively when coming into contact with, meshing with, and separating from the driving unit (500). While in the first action position, the distance from a stress surface (412) of the meshing part (410) to the bottom surface of the transferring part (450) is less than the distance from the stress surface (412) to the bottom surface of the transferring side (450) in the second action position, and the axis of the meshing part (410) is kept basically parallel to the axis of the development unit (10). While in the third action position, the axis of the meshing part (410) is inclined relative to the axis of the driving unit (500). This solves the problem of structural interference between the power receiving unit (400) and the driving unit (500) of the electronic development device prior to meshing the two and the difficulty in separating the driving unit (500) from the power receiving unit (400) when the two are meshed.

Description

Processing box

Technical field

The present invention relates to a process cartridge.

Background technique

A process cartridge detachably mountable on an electronic imaging device. A rotational force driving unit is disposed in the electronic imaging device. The process cartridge mainly includes a developing unit, a toner, a powder controlling unit, and the like, and a power receiving unit disposed at one end of the process cartridge along the axial direction of the developing unit, and the power receiving unit is provided with a power receiving head. After the power receiving head and the driving unit of the electronic image forming apparatus are engaged with each other, the driving force of the rotation is transmitted to the power receiving unit, and finally the developing unit inside the process cartridge is driven to operate, and participates in the developing operation of the electronic image forming apparatus.

In the prior art, the electronic imaging device needs to install the process cartridge into the electronic imaging device before performing the development work (ie, "printing" as the user often calls), and the power receiving unit in the process cartridge needs to be electronically imaged. The drive units on the device make contact and then engage each other.

As shown in FIG. 1, the driving unit 500 on the electronic image forming apparatus (not shown) is engaged with the power receiving unit 100 at one end of the process cartridge C, and the driving unit 500 is oriented in the axial direction X1 (the axial direction X1 is substantially parallel to the axis of the developing unit 10). Moving to the power receiving unit 100, by transmitting the driving force to the power receiving unit 100 after being meshed therewith, the driving unit 500 is substantially coaxial with the power receiving unit 100 during the transmission of power, and finally the driving unit 500 and the power receiving unit When 100 is separated, it moves in the opposite direction of the axial direction X1. As shown in FIG. 2, during the movement of the driving unit, the driving column 510 for transmitting power has a certain probability of causing structural interference with the protrusion 111 on the power receiving unit 100 during the movement, but in the existing technology The outer surface of the protrusion 111 is generally designed to have a surface or edge that is inclined or rounded, so that the influence of structural interference between the protrusion 111 and the drive post 510 can be reduced.

As shown in FIG. 3 and FIG. 4, in the process of moving the driving unit 500 of a new type of electronic imaging device (not shown), in the process of meshing with the power receiving unit 100 at one end of the process cartridge C, the driving unit 500 first Moving in the vertical direction Y1 with respect to the axial direction of the developing unit 10 toward the power receiving unit 100, the driving force of the rotation is transmitted to the power receiving unit 100 after being meshed therewith, and the driving unit 500 and the power receiving unit 100 are substantially maintained during the transmission of the power. Coaxial, when the final drive unit 500 is separated from the power receiving unit 100, it continues in the direction Y2 (the direction with the direction Y1) Consistent) Continue moving.

However, since the driving unit 500 needs to move in the direction Y1 before being engaged with the power receiving unit 100, it is necessary to move in the direction Y2 when the separation is performed after the engagement is completed. Comparing the reciprocating movement process before and after the engagement of the driving unit 500 in FIGS. 1 and 2, in FIGS. 3 and 4, the driving column 510 of the driving unit 500 is easily generated with the protrusion 111 before being engaged with the power receiving unit 100. The structure is interfered with and is not easily avoided (dotted line in FIG. 4), and is separated from each other by the drive post 510 and the protrusion 111 when it is separated after being engaged with the power receiving unit 100.

If the above phenomenon occurs, the driving unit of the electronic imaging device or the power receiving unit of the process cartridge is easily worn or broken, so that the driving unit and the power receiving unit are difficult or unable to stably mesh with each other and transmit power, such that the electronic imaging device or Therefore, the process cartridge cannot continue to be used normally, and the subsequent development quality is affected to varying degrees.

Summary of the invention

The present invention provides a process cartridge for solving the structural interference between the prior art process cartridges before being engaged with the drive unit of the electronic image forming apparatus, and the drive unit in the process cartridge is engaged with the power receiving unit and then separated. A technical problem that easily separates the two.

In order to solve the above technical problems, the technical solution adopted by the present invention is:

A process cartridge detachably mountable on an electronic image forming apparatus, the process cartridge including at least a developing unit, a toner frame, and a power receiving unit; and a power receiving unit for use with a driving unit on the electronic imaging device Engaging and receiving a rotational driving force to the driving unit, the power receiving unit includes an engaging portion, a connecting portion and a transmitting portion; and the power receiving unit has a first action position and a second action respectively when contacting, engaging, and disengaging the driving unit a position and a third action position; wherein, in the first action position, the distance from the force receiving surface of the engaging portion to the bottom surface of the transmitting portion is smaller than the distance from the force receiving surface to the bottom surface of the transmitting portion in the second position and the axis of the meshing portion It is substantially parallel to the axis of the developing unit; in the third operating position, the axis of the engaging portion is inclined with respect to the axis of the drive unit.

Further comprising a first baffle disposed at an end of the toner frame, the first baffle being provided with a pressure plate having one end rotatably coupled to the first baffle, the other end of the pressure plate being crimped to the engaging portion And pressing the engaging portion to retract the engaging portion to be in the first operating position.

The power receiving unit further includes an elastic member disposed between the engaging portion and the transmitting portion for keeping an axis of the engaging portion substantially parallel to an axis of the developing unit.

The pressure plate further includes a limiting surface for limiting the tiltable direction of the engaging portion.

The engaging portion has a force receiving surface, and the pressing plate has a pressing surface, and the pressing plate presses the force receiving surface to press the pressing plate and the engaging portion by the pressing surface. The pressing surface is a curved "U" shaped structure.

An action block is further disposed between the first baffle and the pressure plate, the pressure plate is rotatably mounted to the action block by a protrusion, and the action block is rotatably mounted to the first baffle .

A spring or a torsion spring is further disposed between the first baffle and the pressure plate.

Further comprising a positioning plate disposed on the transmitting portion; the connecting portion of the power receiving unit passes through the elastic member, one end of the elastic member abuts against the surface of the positioning plate, and the other end of the elastic member Then it abuts to the back of the meshing portion.

A connecting member is further included, the transmitting portion further includes a transmitting port; the engaging portion is disposed at one end of the connecting portion, and the other end of the connecting portion is provided with a connecting block, and the connecting member is integrally mounted to the connecting block It is placed in the transfer port of the transmission section.

The transmission portion further includes a sliding slot, and the connecting member is slidably disposed in the sliding slot.

After adopting the above solution, since the distance from the force receiving surface of the engaging portion to the bottom surface of the transmitting portion is smaller than the distance from the force receiving surface to the bottom surface of the transmitting portion in the second position and the axis of the engaging portion is substantially the same in the first operating position The axis of the developing unit remains parallel; in the third operating position, the axis of the engaging portion is inclined with respect to the axis of the drive unit. When the driving unit is engaged with the power receiving unit, no structural interference occurs, and when the driving unit is engaged with the power receiving unit and separated, the two can be separated more easily.

At the same time, the power receiving unit in the process cartridge can be brought into contact with the driving unit on the electronic image forming apparatus to smoothly transmit the power, and the developing quality of the process cartridge in the development process can be stabilized.

DRAWINGS

1 and 2 are schematic views showing a meshing action process of a power receiving unit and a driving unit of the process cartridge;

3 and FIG. 4 are schematic diagrams showing the meshing action process of the power receiving unit of the process cartridge and a novel driving unit;

Figure 5 is a schematic cross-sectional view showing the structure of a process cartridge;

Figure 6 is a schematic view showing the combination of the power receiving unit of the process cartridge and the first shutter;

7, 8, and 9 are schematic structural views of the power receiving unit in the first embodiment;

Figure 10 is a schematic exploded view of the power receiving unit of the first embodiment;

10a and 10b are schematic views showing the operation of the power receiving unit in the first embodiment;

11, 12, 13, 13x, 14, 15, 16, and 17 are schematic diagrams of operations when the power receiving unit and the driving unit in the first embodiment are in contact, mesh, and separate;

18a and 18b are schematic views showing the structure of a power receiving unit in the first embodiment.

detailed description

Embodiments will be described below based on the drawings.

(processing box)

As shown in FIG. 5 and FIG. 6, it is a schematic structural view of the process cartridge C in the electronic imaging device (not shown). The process cartridge C generally includes a toner frame 90 in which the toner 30 is stored, a powder control unit 20 is disposed on the surface of the toner frame 90, and a first baffle 80 is disposed at both ends of the toner frame 90. And the second shutter 70, the developing unit 10 is rotatably mounted on the toner frame 90 by the first shutter 80 and the second shutter 70. In general, the power receiving unit 100 is disposed at one end of the process cartridge C, and the power receiving unit 100 is rotatably disposed between the first shutter 80 and the toner frame 90.

Embodiment 1

(power receiving unit 400)

As shown in FIGS. 7 to 10, it is a schematic structural view of the power receiving unit 400 in the process cartridge C. The power receiving unit 400 includes an engaging portion 410, a connecting portion 420, a transmitting portion 450, an elastic member 430, a pressure plate 440, an action block 460, a positioning plate 435, and a connecting member 490.

The engaging portion 410 is disposed at one end of the connecting portion 420, the engaging portion 410 includes a force receiving surface 412 and a protrusion 411, and the other end of the connecting portion 420 is provided with a connecting block 425. The structure of the protrusion 411 may be replaced by a recessed hole 413 having a non-circular cross section. The pressing plate 440 includes a side protrusion 445 for mounting positioning, a slope 441, a limiting surface 446, and a pressing surface 442. The pressing surface 442 is disposed at one end of the inclined surface 441, and the structure of the pressing surface 442 is preferably curved. "U" shaped structure.

The transmission portion 450 includes a transmission port 455, a chute 455a, and a gear surface 459 for transmitting power.

The elastic member 430 is preferably a spring or a compression spring.

The assembly position of each of the above components in the process cartridge C is such that the connecting portion 420 passes through the elastic member 430, one end of the elastic member 430 abuts against the surface of the positioning plate 435, and the other end of the elastic member 430 abuts against the engaging portion 410. The back side is provided, and the positioning plate 435 is disposed on the transmitting portion 450. The connecting block 425 at one end of the connecting portion 420 passes through the opening 435a of the positioning plate 435 and the through hole 85 of the first baffle 80, and then a connecting member 490 is mounted to the connecting block 425 of the connecting portion 420, the connecting block 425 and the connection The member 490 is integrally disposed in the transfer port 455 of the transmitting portion 450, and the connecting member 490 is slidably disposed in the chute 455a. At the same time, an action block 460 is mounted to the protrusion 82 on the surface of the first baffle 80 and rotatable about the protrusion 82. A platen 440 is rotatably mounted to the action block 460 by the protrusion 445 and rotatable around the protrusion 445. The pressing surface 442 of the pressing plate 440 is in contact with the force receiving surface 412 of the engaging portion 410. The transmitting portion 450 is disposed on the toner frame 90, and its gear surface 459 is engaged with the gear 15 of the developing unit 10. Finally, the first flap 80 integrally mounts the power receiving unit 400 to the toner frame 90 (refer to FIG. 6).

In the connection relationship of the elements of the first embodiment, the engaging portion 410 and the connecting portion 420 can be inclined in any direction with respect to the transmitting portion 450 (as shown in FIG. 10a), and the elastic member 430 functions to make the engaging portion. The axis L1 of the 410 is always maintained in a vertical state (substantially parallel to the axis L3 of the developing unit 10) under the influence of no external force. The limiting surface 446 of the pressing plate 440 contacts the engaging portion 410 or the outer surface of the connecting portion 420 for restricting the tilting direction of the engaging portion 410 and the connecting portion 420 so as to always face the direction of Y2 (vertical to the axial direction of the developing unit 10) Tilt on direction) (As shown in Figure 4, Figure 10b).

(Meshing process of the power receiving unit 400 and the driving unit 500)

As shown in FIGS. 11 to 17, FIG. 11 is a schematic view showing three operation positions when the power receiving unit 400 in the process cartridge C is in contact with, engaged with, and separated from the driving unit 500 in the electronic image forming apparatus.

As shown in FIG. 11 to FIG. 13X, the first action position is the action position of the power receiving unit 400 when the power receiving unit 400 and the driving unit 500 are in contact, and the driving unit 500 is in the Y1 direction (the vertical direction with the developing unit 10 in the axial direction). Moving toward the power receiving unit 400 and contacting the slope 441 of the pressure plate 440, the driving unit 500 continues to move and presses the slope 441 to rotate the platen 440 inwardly around the protrusion 445 (clockwise direction L), at which time the slope 441 is located. The pressing surface 442 at one end also moves inwardly and presses down the force receiving surface 412 of the engaging portion 410, causing the engaging portion 410 and the elastic member 430 to move inward. At this time, the connecting member 490 on the connecting block 425 slides inward along the sliding groove 455a of the transmitting portion 450. At this time, the pressing portion 440 is moved in the Y1 direction of the driving unit 500 to retract the engaging portion 410 inwardly, so that the structural interference of the driving unit 500 before the engagement with the engaging portion 410 can be avoided by the above-described operation.

As shown in FIG. 13X to FIG. 15, the second action position is the action position of the power receiving unit 400 when the power receiving unit 400 and the driving unit 500 are engaged, and moves to the power when the driving unit 500 passes the first action position described above. When the receiving unit 400 is substantially axially coaxial, the pressing plate 440 is no longer in contact with the driving unit 500 and no longer presses the force receiving surface 412 of the engaging portion 410, and the elastic member 430 is also forced by the release of its elastic force. The engaging portion 410 moves outward to engage the drive unit 500. The driving column 510 of the driving unit 500 abuts against the inner surface of the protrusion 411 or the inner hole 413 of the engaging portion 410, and transmits the rotational driving force from the driving unit 500 to the engaging portion 410 and the connecting portion 420, and is located at one end of the connecting portion 420. The connecting member 490 simultaneously transmits the driving force against the sliding groove 455a in the transmitting portion 450, and finally transmits the rotational driving force to the process cartridge C through the gear surface 459 of the transmitting portion 450. At the same time, since the engaging portion 410 is urged outward by the elastic force, the force receiving surface 412 also urges the pressing surface 442 outwardly, so that the pressing plate 440 rotates outward along the protrusion 445 (in the opposite direction of the clockwise direction L), so that the pressing plate 440 returns to the first action position.

As shown in FIG. 15 to FIG. 17 , the third action position is the action position of the power receiving unit 400 when the power receiving unit 400 and the driving unit 500 are separated, and the driving unit 500 and the power receiving unit 400 perform the force transmission. When the driving unit 500 moves in the Y2 direction, the meshing portion 410 is still in meshing state with the driving unit 500, and the driving unit 500 moves in the Y2 direction to generate a drag force to the meshing portion 410 to cause the meshing portion 410, The connecting portion 420 and the elastic member 430 are inclined, that is, the axis L1 of the engaging portion 410 is inclined with respect to the axis L2 of the driving unit 500. When the driving unit 500 continues to move, the driving column 510 is relatively easily separated from the protrusion 411. At this time, the engaging portion 410 is substantially parallel to the axes L1 and L2 before the engaging portion 410 is returned to the first operating position due to the release of the elastic force of the elastic member 430 itself.

The above three operation positions are realized in that the distance H1 of the force receiving surface 412 to the bottom surface of the transmitting portion 450 in the first operating position should be smaller than the distance H2 from the force receiving surface 412 in the second position to the bottom surface of the transmitting portion 450 (as shown in the figure). 13X contrast), and in the first action position and the second action position, the axis L1 of the meshing portion is always substantially the same as the axis L3 of the developing unit Parallel. In the third action position, the axis L1 of the engaging portion 410 is inclined with respect to the axis L2 of the drive unit 500. When the two are completely separated, the axis L1 is returned to be substantially parallel to the axis L3.

In addition, as shown in FIG. 18a to FIG. 18b, the force receiving surface 412 of the engaging portion 410 is similarly disposed between the engaging portion 410 and the connecting portion 420, and the elastic member 430 receives the force surface at one end. The back of the 412. The remaining components refer to the assembly relationship of the components in the (power receiving unit 400). For the action relationship between the engaging portion 410 and the elastic member 430, reference may be made to the action relationship between the engaging portion 410 and the elastic member 430 in the first, second, and third operating positions.

Additionally, the actuating block 460 can likewise be replaced by a first baffle 80, i.e., the projection 445 of the platen 440 is rotatably mounted on the first baffle 80.

In addition, in order to ensure that the pressure plate 440 has good resilience, an elastic member such as a spring or a torsion spring is disposed between the pressure plate 440 and the action 460 or the first baffle 80.

In addition, the positioning plate 435 can also be replaced by the outer surface of the first baffle 80, that is, the connecting block 425 passes through the elastic member 430 and the through hole 85 of the first baffle 80, and the elastic member 430 abuts against the outside of the first baffle 80. surface.

In addition, the positioning plate 435 can also be replaced by the outer surface of the transmitting portion 450, that is, the connecting block 425 passes through the elastic member 430 and the through hole 85 of the first baffle 80, and the elastic member 430 abuts against the outer surface of the transmitting portion 450.

In the first embodiment described above, the power receiving unit 400 can also be installed in a mechanism for transmitting power, such as a photosensitive unit, a developing unit, a powder feeding unit, a stirring unit, and the like.

(Effect of the invention)

According to the present invention, there is provided a power receiving unit which does not cause structural interference when the driving unit is engaged with the power receiving unit, and which can be easily separated when the driving unit is engaged with the power receiving unit. At the same time, the structural strength life of the power receiving unit or the driving unit can be extended, thereby extending the service life of the process cartridge or the electronic imaging device.

Another object of the present invention is to provide a process cartridge having the above-described power receiving unit, which enables the power receiving unit in the process cartridge to be in contact with the driving unit on the electronic imaging device to smoothly transmit power and stabilize the process cartridge. The quality of development involved in the development process.

The present invention has been described above by way of specific embodiments, but the present invention is not limited thereto, and various modifications made within the scope of the technical scope of the present invention are also included in the present invention.

Claims

A process cartridge detachably mountable on an electronic image forming apparatus, the process cartridge including at least a developing unit, a toner frame, and a power receiving unit; and a power receiving unit for use with a driving unit on the electronic imaging device Engaging and receiving a rotational driving force to the driving unit, the power receiving unit includes an engaging portion, a connecting portion and a transmitting portion; and the power receiving unit has a first action position and a second action respectively when contacting, engaging, and disengaging the driving unit a position and a third action position; wherein, in the first action position, the distance from the force receiving surface of the engaging portion to the bottom surface of the transmitting portion is smaller than the distance from the force receiving surface to the bottom surface of the transmitting portion in the second position and the axis of the meshing portion It is substantially parallel to the axis of the developing unit; in the third operating position, the axis of the engaging portion is inclined with respect to the axis of the drive unit.
A process cartridge according to claim 1, further comprising a first shutter disposed at an end of said toner frame, said first shutter being provided with one end rotatably coupled to said first shutter a pressing plate, the other end of the pressing plate is crimped with the engaging portion for pressing the engaging portion to retract the engaging portion to be in the first action position.
A process cartridge according to claim 2, wherein said power receiving unit further comprises elasticity between said engaging portion and said transmitting portion for keeping the axis of said engaging portion substantially parallel to the axis of said developing unit Pieces.
A process cartridge according to Claim 3, wherein said pressure plate further includes a stopper surface for restricting the tiltable direction of the engaging portion.
A process cartridge according to claim 3, wherein said engaging portion has a force receiving surface, said pressing plate has a pressing surface, and said pressing plate urges said force receiving surface by said pressing surface The pressing plate is pressed against the engaging portion, and the pressing surface is a curved U-shaped structure.
A process cartridge according to Claim 3, wherein an action block is further disposed between said first shutter and said pressure plate, said pressure plate being rotatably mounted to said action block by a projection, said An action block is rotatably mounted to the first baffle.
A process cartridge according to Claim 3, wherein a spring or a torsion spring is further disposed between said first shutter and said pressure plate.
A process cartridge according to claim 3, further comprising a positioning plate disposed on the transmitting portion; the connecting portion of the power receiving unit passes through the elastic member, and one end of the elastic member abuts The other end of the elastic member abuts against the back surface of the engaging portion against the surface of the positioning plate.
A process cartridge according to claim 8, further comprising a connecting member, said transmitting portion further comprising a transfer opening; said engaging portion being provided at one end of the connecting portion, and the other end of said connecting portion being provided A connecting block, the connecting member being mounted to the connecting block and integrally disposed in the transfer opening of the transmitting portion.
The process cartridge according to claim 9, wherein said transmission portion further comprises a chute, and said connecting member is slidably disposed in said chute.