CN107436551B - Drive assembly of processing box and processing box comprising same - Google Patents

Abstract

The invention relates to a drive assembly and a process box thereof, which can be detachably installed in an electronic imaging device. The drive assembly includes a power receiving unit and a transmission unit; the power receiving unit receives power from the electronic imaging device. The driving force of the driving mechanism and the rotational driving force are transmitted to the transmission unit, wherein the power receiving unit is always tilted relative to the rotation axis of the transmission unit and has an initial position and a displacement position, the The power receiving unit can move from the initial position to the displacement position under the action of an external force, and can return from the displacement position to the initial position after the external force is removed. The above technical solution solves the structural wear or breakage of the driving assembly and driving mechanism caused by structural interference in the prior art, and extends the service life of the process cartridge and the electronic imaging device.

Description

A driving component of a process box and a process box containing the driving component

Technical field

The present invention relates to a driving assembly of a process cartridge and a process cartridge including the driving assembly.

Background technique

In the related art, the process cartridge can be detachably mounted on the electronic imaging device. The electronic imaging device is provided with a driving mechanism that outputs rotational driving force. The process box generally includes a rotational force driving assembly, a developing unit, a developer, a powder control unit, and a housing that accommodates the above units. In addition, according to different types of process box structures, a photosensitive unit, a charging unit, and a cleaning unit are additionally provided. And mixing unit, etc. The rotational force driving component of the process cartridge is arranged at one end of the process box along the axial direction of the developing unit. The rotational force driving component engages with the driving mechanism in the electronic imaging device and then transmits the rotational driving force to the process box. Finally, It drives the rotating unit (such as developing unit, photosensitive unit, stirring unit, etc.) inside the process box to rotate, and participates in the development work of the electronic imaging device.

Before the electronic imaging device performs development work (often referred to as "printing"), the user needs to install the process cartridge into the electronic imaging device. The rotational force driving assembly of the process box needs to be in contact with the driving mechanism on the electronic imaging device. mesh with each other.

As shown in Figures 1 and 2, it is a schematic diagram of the driving mechanism 500 in the electronic imaging device (not shown) being in contact and meshing with the driving assembly 100 at one end of the process cartridge C. The driving assembly 100 moves along the installation direction Y1 along with the installation of the process cartridge. (The installation direction Y1 is substantially perpendicular to the rotation axis L3 of the developing unit 10 ) toward the driving mechanism 500 . When the movement is substantially coaxial with the driving mechanism 500 , the driving pin 510 of the driving mechanism 500 contacts the engaging claw 110 of the driving assembly 100 The meshing transmits the rotational driving force from the driving mechanism 500 to the driving assembly 100, and finally the driving assembly 100 transmits the driving force to each unit of the process cartridge through gears.

As shown in FIG. 3 , before the driving assembly 100 is in contact with the driving mechanism 500 , when the process cartridge is installed into the electronic imaging device, the axial ends of the process cartridge are relatively fixed by the inner walls or guide rails in the electronic imaging device. The process box cannot move axially. Similarly, the driving mechanism 500 in the electronic imaging device is also designed to only rotate around its own axis and cannot produce displacement. In this way, before the driving assembly 100 comes into contact with the driving mechanism 500, there is a height difference H1 between the lowest point of the transmission pin 510 for transmitting driving force and the highest point of the meshing claw 110. Therefore, the meshing claw 110 moves to the position of the transmission pin 510. There will be a certain probability of mutual structural interference during the meshing process. In the prior art, in order to reduce mutual structural wear or interference, the outer surface of the transmission pin 510 or the engagement claw 110 is generally provided with a certain slope or a smooth surface. At the same time, when the driving assembly 100 is in contact with the driving mechanism 500, The engaging claw 110 can be retracted along the rotation axis L2 of the driving assembly 100 to avoid the above-mentioned structural interference.

Therefore, if the above-mentioned driving mechanism 500 and the driving assembly 100 repeatedly engage and disengage multiple times during the installation or removal of the process cartridge, the structure of the driving mechanism 500 of the electronic imaging device or the driving assembly of the process cartridge may easily be damaged. The structure of 100 is worn or broken, making it difficult or impossible for the driving mechanism 500 and the driving assembly 100 to engage with each other stably and transmit power. In this way, the electronic imaging device or the process box cannot continue to be used normally, and the subsequent development quality will also be affected to varying degrees.

Contents of the invention

The present invention provides a driving assembly of a process cartridge and a process cartridge including the driving assembly to solve the structural interference phenomenon that occurs when the driving assembly is in contact with or disengaged from a driving mechanism of an electronic imaging device.

In order to solve the above technical problems, the technical solutions adopted are:

A driving assembly of a process cartridge, which can be detachably installed in an electronic imaging device. The driving assembly includes: a power receiving unit and a transmission unit; the power receiving unit receives drive from a driving mechanism in the electronic imaging device force and transmits the rotational driving force to the transmission unit, characterized in that,

The power receiving unit is always tilted relative to the rotation axis of the transmission unit and has an initial position and a displacement position,

The power receiving unit can move from the initial position to the displacement position under the action of an external force, and can return from the displacement position to the initial position after the external force is removed.

Preferably, the inclination angle of the power receiving unit relative to the rotation axis of the transmission unit in the initial position is consistent with the inclination angle relative to the rotation axis of the transmission unit in the displacement position.

Preferably, the process cartridge has an installation direction when installed into the electronic imaging device, and the power receiving unit is provided with an engaging portion;

The position of the engaging portion when in the initial position is further forward in the mounting direction than the position of the engaging portion when in the displacement position.

Preferably, the installation direction is substantially perpendicular to the axial direction of the transmission unit.

Preferably, the driving assembly further includes a limiting part, and the movement trajectory of the power receiving unit between the initial position and the displacement position is limited by the limiting part.

Preferably, the restriction portion keeps the inclination angle of the power receiving unit consistent with the transmission unit when the power receiving unit is in the initial position and the displacement position.

Preferably, the power receiving unit includes a connecting piece, and the connecting piece is connected to the restricting part.

Preferably, the restriction part includes an arcuate chute, the arcuate chute is arranged around the rotation axis of the transmission unit, and the connecting piece is located in the arcuate chute and can move along the arcuate chute. Sliding, the width of the arcuate chute is basically the same as the diameter of the connecting piece.

Preferably, the limiting part further includes a limiting block; viewed along the axis of the rotation axis of the transmission unit, the position of the limiting block overlaps with the rotation axis of the transmission unit, and the position of the limiting block is The edge forms the inner edge of the arcuate chute.

Preferably, the driving assembly further includes a baffle, the baffle includes a through opening, the power receiving unit passes through the through opening, and the limiting block is formed from one side of the through opening along the side of the through opening. Radially extending into the center of the through opening, the gap between the limiting block and the through opening forms the arcuate chute.

Preferably, the driving assembly further includes a reset piece; one end of the reset piece is fixed, and the other end of the reset piece is connected to the power receiving unit,

The reset member enables the power receiving unit to return to the initial position from the displacement position after the external force is removed.

Preferably, the driving assembly further includes a reset piece; one end of the reset piece is connected to the baffle, and the other end of the reset piece is connected to the power receiving unit,

The reset member enables the power receiving unit to return to the initial position from the displacement position after the external force is removed.

Preferably, the restricting part can rotate around the rotation axis of the transmission unit, and the power receiving unit can rotate together with the restricting part through the cooperation of the connecting piece and the restricting part. At the same time, the power receiving unit can Rotates independently along its own axis of rotation.

Preferably, the restriction part is provided with a through hole, the through hole is eccentrically arranged relative to the rotation axis of the transmission unit, the connecting member passes through the through hole, and the diameter of the through hole is consistent with the diameter of the through hole. The diameters of the connectors are essentially the same.

Preferably, the driving assembly further includes a baffle, the baffle includes a through opening, the power receiving unit passes through the through opening, and the restricting part covers the through opening.

Preferably, the driving assembly further includes a reset piece; one end of the reset piece is fixed, and the other end of the reset piece is connected to the restriction part,

The reset member enables the power receiving unit to return to the initial position from the displacement position after the external force is removed.

Preferably, the driving assembly further includes a reset piece; one end of the reset piece is connected to the baffle, and the other end of the reset piece is connected to the limiting portion,

The reset member enables the power receiving unit to return to the initial position from the displacement position after the external force is removed.

Preferably, the restoring member has elastic tensioning force.

Preferably, the restoring member is a rubber band or a tension spring.

Preferably, a buffer member is provided between the power receiving unit and the transmission unit, and the buffer member allows the power receiving unit to expand and contract relative to the transmission unit.

Preferably, the engaging portion is a semicircular sphere with an inner recess, the semicircular sphere has an inner concave opening, and at least two blocking walls are provided in the opening.

Preferably, the transmission unit includes a cavity, a chute extending along the axial direction of the rotation axis of the transmission unit is provided in the cavity, the power receiving unit includes a transmission member, and the power receiving unit extends into In the cavity, the transmission member is disposed in the chute and can slide along the chute.

Preferably, the process box is provided with a developing unit, and the power receiving unit is provided with an engaging portion; the position of the engaging portion when in the initial position is greater than the position of the engaging portion when in the displacement position. Closer to the developing unit.

Preferably, the power receiving unit is inclined relative to the developing unit, and the rotation axis of the power receiving unit is inclined relative to the rotation axis of the developing unit.

A process box, which is provided with any one of the above-mentioned driving components.

The technical solution provided by this application can achieve the following beneficial effects:

After adopting the above technical solution, the power receiving unit of the driving assembly can always be tilted relative to the rotation axis of the transmission unit, and has the function of returning to the initial position without the action of external force. It solves the problem of structural wear or breakage caused by structural interference in the driving assembly and driving mechanism in the prior art, thereby extending the service life of the process cartridge and the electronic imaging device.

It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention, which are of great significance to this field. Ordinary technicians can also obtain other drawings based on these drawings without exerting creative efforts.

1 and 2 are schematic structural diagrams of a driving assembly of a process cartridge and a driving mechanism of an electronic imaging device in the prior art.

FIG. 3 is a schematic diagram of the operation of the driving assembly and the driving mechanism in the prior art before contact and engagement.

Fig. 4 is a cross-sectional structural view of the process cartridge in this embodiment.

Fig. 5 is an overall structural diagram of the process cartridge in this embodiment.

FIG. 6 is a schematic structural diagram of the driving assembly of the process cartridge in the first embodiment.

Figure 7 is a structural diagram of the power receiving unit and the transmission unit of the driving assembly in the first embodiment.

7a and 7b are schematic diagrams of the tilting operation of the power receiving unit relative to the transmission unit in Embodiment 1.

8a and 8b are schematic structural diagrams of the restricting portion of the baffle in the first embodiment.

Figure 9 is a schematic structural diagram of the restricting portion of the baffle in Embodiment 1.

Figures 10a, 10b, 11a, and 11b are schematic diagrams of the cooperation between the power receiving unit and the reset member in the first embodiment.

Figure 12 is a schematic diagram of the cooperation between the power receiving unit and the reset member in the first embodiment.

FIG. 13 is a schematic diagram of the operation of the process cartridge in the first embodiment when it is installed in the electronic imaging device.

FIG. 14 is a schematic structural diagram of the driving assembly of the process cartridge in the second embodiment.

Figures 15a and 15b are schematic structural views of the limiting portion of the baffle in the second embodiment.

Figure 16 is a schematic structural diagram of the limiting portion of the baffle in the second embodiment.

Figures 17a, 17b, 18a, and 18b are schematic diagrams of the cooperation between the power receiving unit and the reset member in the second embodiment.

19 and 20 are schematic diagrams of the operation of the power receiving unit and the reset member in this embodiment to cooperate with each other to tilt the power receiving unit.

Figure 21 is a schematic structural diagram of the power receiving unit and transmission unit in this embodiment.

22 and 23 are schematic diagrams of the operation of the power receiving unit and the driving mechanism in this embodiment when they are in contact engagement.

24 and 25 are schematic structural diagrams of another engaging portion of the power receiving unit in this embodiment.

Detailed ways

The embodiment will be described below based on the drawings.

In the present invention, the axial direction of the process cartridge is coaxial or parallel to the rotation axis of the developing unit or the transfer unit.

In the present invention, the installation direction of the process cartridge in the electronic imaging device is substantially perpendicular to the axial direction.

In the present invention, the direction in which the process cartridge is detached (taken out) in the electronic image forming apparatus is opposite to the direction in which the process cartridge is installed.

(processing box)

As shown in Figures 4 and 5, they are schematic structural diagrams of the process cartridge C. The process cartridge C includes a housing 90. The developer 30 is stored in the housing 90. A powder control unit 20 and a developing unit are fixedly provided on the surface of the housing 90. 10 is rotatably mounted on the housing 90. The driving assembly 200 is disposed at one end of the process cartridge C and is mounted on the housing 90 through a baffle 80 .

In addition, according to different similar structures of the process cartridge C, a housing 91 and a built-in cleaning unit 60 , a photosensitive unit 40 and a charging unit 50 are additionally provided.

The driving assembly 200 located at one end of the process cartridge C includes a power receiving unit 200a and a transmission unit 250. The power receiving unit 200a receives the driving force from the driving mechanism in the electronic imaging device and transmits the rotational driving force to the transmission unit 250. The power receiving unit 200a is always inclined relative to the rotation axis of the transmission unit 250, and has an initial position and a displacement position. As for the switching between the initial position and the displacement position of the power receiving unit 200a, the power receiving unit 200a in the present invention moves from the initial position to the displacement position under the action of external force, such as the force during the process of disassembly and assembly of the process cartridge C, and the external force After cancellation, for example, after the process cartridge C is in the installed position, the power receiving unit 200a returns to the original position from the displacement position by relying on internal power. It solves the problem of structural wear or breakage caused by structural interference in the driving assembly and driving mechanism in the prior art, thereby extending the service life of the process cartridge and the electronic imaging device.

In order to make the movement process of the power receiving unit 200a smoother and to make the moving position more controllable, the inclination angle of the power receiving unit 200a relative to the rotation axis of the transmission unit 250 in the initial position is the same as the tilt angle of the power receiving unit 200a in the displacement position. The inclination angle of the rotation axis of the transmission unit 250 remains consistent. In order to achieve this purpose, the present invention is specially provided with a limiting portion. For the power receiving unit 200a to return to the initial position by itself, the present invention is implemented by a reset member. In some embodiments, the driving assembly further includes a baffle, in which case the limiting part and the return member can be installed on the baffle, or directly used as a part of the baffle.

Regarding the implementation of the above technical solution, this implementation mode will be described in detail with the following two examples. Embodiment 1

As shown in Figures 6 and 7, the driving assembly 200 located at one end of the process cartridge C includes a power receiving unit 200a, a transmission unit 250, and a baffle 80 and a reset member 810 that cooperate with the power receiving unit 200a and the transmission unit 250 ( Such as rubber bands or tension springs). The power receiving unit 200a includes a meshing part 210, and one end of the connecting piece 220 is connected to the meshing part 210. The other end of the connecting piece 220 is provided with a detachable spherical part 220a and a transmission part 225 inserted in the spherical part 220a; the meshing part 210 It is a pair of outwardly protruding engagement claws; the outer surface of the transmission unit 250 is provided with transmission teeth 252, and a cavity 255 and a chute 251 are provided in the middle; the spherical member 220a at one end of the connector 220 of the power receiving unit 200a is placed on the transmission unit In the cavity 255 of 250, the transmission member 225 is placed in the chute 251. When the power receiving unit 200a receives power, the power can be transmitted to the transmission unit 250 by the transmission member 225 abutting on the chute 251. As shown in Figures 7a and 7b, after the power receiving unit 200a is assembled with the transmission unit 250, the power receiving unit 200a can achieve a 360-degree rotational displacement around the rotation axis L4 of the transmission unit 250 and achieve tilting swing relative to the transmission unit 250. That is, the rotation axis L5 of the power receiving unit 200 a has an inclination angle R1 with the rotation axis L3 of the developing unit 10 or the rotation axis L4 of the transmission unit 250 . Since the transmission member 225 is disposed in the chute 251 , even when the power receiving unit 200 a is in a tilted state, the received power can be transmitted to the transmission unit 250 , and the transmission unit 250 can be connected to one end of the developing unit 10 through the transmission teeth 252 The gear 15 meshes to transmit power to the developing unit 10 . As shown in Figures 8a and 8b, the baffle 80 includes a protrusion 81 and a limiting portion 82. The limiting portion 82 is provided with an arcuate chute 82a and a limiting block 82b that cooperates with the arcuate chute 82a.

The assembly relationship of the above components is: as shown in Figure 6, the connector 220 of the power receiving unit 200a passes through the arcuate chute 82a of the baffle 80 and is connected to the spherical member 220a, and the transmission member 225 is inserted behind the spherical body 220a. Then they are placed together into the cavity 255 of the transfer unit 250. One side of the reset member 810 is sleeved on the protrusion 81 of the baffle 80, and the other side is sleeved on the connecting piece 220.

As shown in Figure 9, after the above components are assembled, when the power receiving unit 200a is pushed by an external force, the connector 220 of the power receiving unit 200a can follow the arcuate trajectory of the arcuate chute 82a in the arcuate chute 82a. During the sliding displacement, when viewed along the axial direction, since the arc-shaped trajectory of the arc-shaped chute 82a is set around the rotation axis of the transmission unit 250, and the position of the limit block 82b overlaps with the rotation axis of the transmission unit 250, the power is received. Unit 200a implements swing. At the same time, the power receiving unit 200a keeps the power receiving unit 200a in an inclined state relative to the transmission unit 250 under the restrictions of the arcuate chute 82a and the limiting block 82b of the limiting part 82. Refer to Figure 7a, that is, the power receiving unit 200a The rotation axis L5 is always inclined relative to the rotation axis L4 of the transmission unit 250 or the rotation axis L3 of the developing unit 10 and is not coaxial with the rotation axis L4 or parallel to the rotation axis L3. In addition, in order to limit the change of the inclination angle between the power receiving unit 200a and the transmission unit 250, the chute width D2 of the arcuate chute 82a of the limiting part 82 is basically the same as the diameter D1 of the connecting member 220 of the power receiving unit 200a, so that When the connector 220 in the arcuate chute 82a slides in the arcuate chute 82a, the rotation axis L5 of the power receiving unit 200a and the rotation axis L4 of the transmission unit 250 always maintain the same inclination angle R1.

When the connecting member 220 is pulled closer to the protrusion 81 by the elastic tension force of the reset member 810 and no external force acts on the engaging portion 210, the engaging portion 210 has an initial position without external force; when the engaging portion 210 is pushed by After the external force pushes the connecting member 220 to slide along the arc-shaped slide groove 82a, the engaging portion 210 has a displacement position driven by the external force. As shown in FIGS. 10a to 11b , through the comparison between the initial position and the displaced position, in the initial position, the elastic tensioning force of the reset member 810 causes the engaging portion 210 to be closer to the developing unit 10 than the engaging portion 210 in the displaced position. position (as shown in Figure 12); similarly, as shown in Figure 13, when the process cartridge C is installed into the electronic imaging device P1 along the guide rail P100 of the electronic imaging device P along the installation direction Y1, the engaging portion 210 in the initial position is The engaging portion 210 in the displaced position is further forward (forward) relative to the installation direction Y1 of the process cartridge C. Therefore, when the engaging portion 210 is in the initial position, the engaging portion 210 is in a relatively forward position (forward). It is easy to achieve contact engagement with the driving structure 500 in the electronic imaging device P to receive the rotational driving force.

Embodiment 2

In the second embodiment, the power receiving unit 200a and the reset member 810 of the transmission unit 250 can refer to the structural description in the first embodiment, which will not be repeated here. The main difference from Embodiment 1 is the structure of the baffle 80 . As shown in FIGS. 14 to 16 , the baffle 80 includes a through opening 85 , a protrusion 84 , and a limiting portion 86 covering the through opening 85 . The restricting part 86 has a disk-shaped structure. The restricting part 86 is provided with a through hole 86a and a protruding post 86b. The through hole 86a and the protruding post 86b are located on the rotation axis away from the restricting part 86. The diameter of the through hole 86a is consistent with the power receiving unit 200a. The diameters of the connectors 220 are substantially the same.

The assembly relationship of the above components is as follows: the restriction part 86 covers the through hole 85 and can rotate around the rotation axis of the transmission unit 250; the connector 220 of the power receiving unit 200a passes through the through hole 86a and is connected to the spherical member 220a; the transmission member 225 is inserted into the spherical body 220a and then placed together in the cavity 255 of the transmission unit 250. One side of the reset member 810 is sleeved on the boss 86b of the restriction part 86, and the other side is sleeved on the boss 84 of the baffle 80. .

As shown in Figures 17a to 18b, after the above components are assembled, the engaging portion 210 of the power receiving unit 200a has an initial position without external force and a displacement position under external force, similar to the first embodiment. When there is no external force to push, the elastic tensioning force of the reset member 810 pulls the boss 86b and the protrusion 84 closer, and the meshing part 210 is in the initial position without external force; when the meshing part 210 is pushed by the external force, the connecting member 220 follows The through hole 86a of the limiting portion 86 is set to be far away from the rotation axis of the limiting portion 86, so the rotation axis L5 of the power receiving unit 200a can be made to rotate relative to the through hole 86a through the cooperation of the connecting piece 220. The rotation axis L4 of the transfer unit 250 or the rotation axis L3 of the developing unit 10 is tilted and always maintains the same tilt angle R1, as shown in FIG. 19 .

In the above-mentioned Embodiments 1 and 2, when the thrust force acting on the meshing portion 210 disappears, the meshing portion 210 returns to the original position from the displacement position under the elastic tensioning force of the reset member 810 .

In the above-mentioned Embodiments 1 and 2, as shown in Figures 6, 14 and 20, the return member 810 may be a rubber band, or a tension spring 820 may be used instead.

In the above-mentioned Embodiments 1 and 2, as shown in FIG. 21 , in order to enable the engaging portion 210 of the power receiving unit 200 a to have a certain amount of expansion and contraction relative to the transmission unit 250 when pushed by an external force (a certain amount can be adjusted along its axis L5 (amount of expansion and contraction) and has buffering properties to reduce wear. A buffer member 300 may be provided between the power receiving unit 200a and the transmission unit 250. The buffer member 300 may be a conical spring, a magnet, an elastic sponge, etc.

(Meshing of power receiving unit and driving mechanism)

As shown in Figures 22 and 23, it is a schematic diagram of the action when the power receiving unit 200a of the drive assembly 200 of the process cartridge C is in contact and meshed with the drive mechanism 500 in the electronic imaging device P. Due to the action of the restricting portion 82/86, the power receiving unit 200a is in contact with the drive mechanism 500 in the electronic imaging device P. The unit 200a always remains tilted relative to the transmission unit 250, and through the action of the reset member 810/820, the engaging portion 210 in the initial position can basically "avoid" structural interference with the transmission pin 510 of the driving mechanism 500. Therefore, the engaging portion 210 The central position of the drive mechanism 500 is relatively easy to access. When the power receiving unit 200a and the driving mechanism 500 are engaged to transmit the driving force, even if the engaging claws (210a, 210b) of the engaging portion 210 are arranged one high and one low due to the tilt relationship, the driving mechanism 500 has At least one transmission pin 510 may also contact one of the higher-positioned engaging claws 210b to transmit driving force to drive the rotation of the power receiving unit 200a.

In addition, as shown in Figures 24 and 25, in order to enable the power receiving unit 200a to better engage with the driving mechanism 500 and avoid disengagement during the transmission of driving force, the engaging claws (210a, 210b) of the engaging portion can be Instead, a semicircular sphere 260 with an inner recess is provided. The semicircular sphere 260 is disposed at one end of the connecting member 220 like the engaging portion 210. The semicircular sphere 260 has a concave opening 265, and at least two blocking walls 261 are provided in the opening 265. The opening 265 can basically wrap around the arc protrusion 515 at the front end of the driving mechanism 500, and the blocking wall 261 is used to abut the transmission pin 510 of the driving mechanism 500 to receive the driving force. Similarly, the driving power receiving unit 200a keeps tilting relative to the transmission unit 250 due to the action of the restricting portion. When the power receiving unit 200a is in contact and meshed with the driving mechanism 500, due to the shape of the semicircular sphere 260, the arc protrusion 515 of the driving mechanism 500 is wrapped by the semicircular sphere 260 during the process of transmitting power to the power receiving unit 200a, and the transmission The pin 510 is also located within the opening 265 when it abuts against the blocking wall 261 . Therefore, when the driving mechanism 500 engages with the power receiving unit 200 a and transmits the driving force, the driving mechanism 500 can be largely prevented from being disengaged from the meshing portion.

The present invention has been described above through specific embodiments, but the present invention is not limited thereto, and also covers various modifications made within the scope of the technical solution of the present invention based on the idea of the present invention.

Claims (22)

1. A drive assembly of a process cartridge detachably mountable in an electronic image forming apparatus, the drive assembly comprising: a power receiving unit and a transmitting unit; the power receiving unit receives a driving force from a driving mechanism in an electronic imaging device and transmits the rotating driving force to the transmitting unit, characterized in that,

the power receiving unit is always inclined relative to the rotation axis of the transmission unit and is provided with an initial position and a displacement position,

the power receiving unit can move from the initial position to the displacement position under the action of external force, and can return to the initial position from the displacement position after the external force is removed;

the driving assembly further comprises a limiting part, and the movement track of the power receiving unit between the initial position and the displacement position is limited by the limiting part;

the limiting part enables the inclination angle of the power receiving unit relative to the transmission unit to be consistent when the power receiving unit is at the initial position and the displacement position;

the processing box has an installation direction when being installed into the electronic imaging device, and the power receiving unit is provided with a meshing part; the position of the engagement portion at the initial position is more advanced in the mounting direction than the position of the engagement portion at the displacement position;

the external force is the force received by the power receiving unit in the process of disassembling and assembling the processing box.

2. A drive assembly of a process cartridge according to claim 1, wherein an inclination angle of said power receiving unit with respect to a rotation axis of the transmitting unit at said initial position coincides with an inclination angle with respect to a rotation axis of the transmitting unit at said displacement position.

3. A drive assembly of a process cartridge according to claim 1 or 2, wherein said mounting direction is substantially perpendicular to an axial direction of said transfer unit.

4. The drive assembly of a process cartridge according to claim 1, wherein the power receiving unit includes a connecting member, the connecting member being connected to the restricting portion.

5. The drive assembly of a process cartridge according to claim 4, wherein the restriction portion includes an arc chute provided around the rotation axis of the transfer unit, and the coupling member is disposed in the arc chute and is slidable along the arc chute, and a width of the arc chute is substantially the same as a diameter of the coupling member.

6. The drive assembly of a process cartridge according to claim 5, wherein the restriction portion further comprises a stopper; the position of the limiting block is overlapped with the rotating shaft of the transmission unit when seen along the axial direction of the rotating shaft of the transmission unit, and the edge of the limiting block forms the inner side edge of the arc chute.

7. The drive assembly of claim 6, further comprising a baffle plate, wherein the baffle plate comprises a through hole, the power receiving unit passes through the through hole, the stopper extends from one side of the through hole to the center of the through hole along the radial direction of the through hole, and a gap between the stopper and the through hole forms the arc chute.

8. The drive assembly of a process cartridge according to claim 5 or 6, wherein the drive assembly further comprises a reset member; one end of the resetting piece is fixed, the other end of the resetting piece is connected with the power receiving unit,

the reset piece enables the power receiving unit to return to the initial position from the displacement position after the external force is removed.

9. The drive assembly of a process cartridge according to claim 7, wherein said drive assembly further comprises a reset member; one end of the resetting piece is connected with the baffle plate, the other end of the resetting piece is connected with the power receiving unit,

the reset piece enables the power receiving unit to return to the initial position from the displacement position after the external force is removed.

10. A drive assembly of a process cartridge according to claim 4, wherein said regulating portion is rotatable about a rotation axis of the transmitting unit, and said power receiving unit is rotatable together with said regulating portion by cooperation of said connecting member with said regulating portion, and at the same time, is independently rotatable along its own rotation axis.

11. A drive assembly for a process cartridge according to claim 10, wherein said restriction portion is provided with a through hole, said through hole being provided eccentrically with respect to a rotation axis of said transmission unit, said connection member passing through said through hole, a diameter of said through hole being substantially the same as a diameter of said connection member.

12. The drive assembly of claim 11, wherein the drive assembly further comprises a shutter including a through opening through which the power receiving unit passes, the restriction covering the through opening.

13. The drive assembly of a process cartridge according to claim 10 or 11, wherein the drive assembly further comprises a reset member; one end of the resetting piece is fixed, the other end of the resetting piece is connected with the limiting part,

the reset piece enables the power receiving unit to return to the initial position from the displacement position after the external force is removed.

14. The drive assembly for a process cartridge according to claim 12, wherein said drive assembly further comprises a reset member; one end of the resetting piece is connected with the baffle plate, the other end of the resetting piece is connected with the limiting part,

the reset piece enables the power receiving unit to return to the initial position from the displacement position after the external force is removed.

15. A drive assembly for a process cartridge according to any one of claims 8, 9, 13, 14, wherein said return member has an elastic tension.

16. The drive assembly of a process cartridge according to claim 15, wherein the return member is a rubber band or a tension spring.

17. A drive assembly for a process cartridge according to claim 1, wherein a buffer member is provided between said power receiving unit and said transmitting unit, said buffer member being capable of making said power receiving unit retractable with respect to said transmitting unit.

18. A drive assembly for a process cartridge according to claim 1 or 2, wherein the engagement portion is a semi-sphere having an inner recess, the semi-sphere having a concave opening with at least two retaining walls disposed therein.

19. A drive assembly of a process cartridge according to claim 1, wherein said transmission unit includes a cavity in which a slide groove extending in an axial direction of a rotation shaft of said transmission unit is provided, and said power receiving unit includes a transmission member which extends into said cavity, said transmission member being provided in said slide groove and being slidable along said slide groove.

20. A drive assembly of a process cartridge according to claim 1 or 2, wherein a developing unit is provided in said process cartridge, and said power receiving unit is provided with an engaging portion; the position of the engagement portion at the initial position is closer to the developing unit than the position of the engagement portion at the displacement position.

21. A drive assembly for a process cartridge according to claim 20, wherein said power receiving unit is inclined with respect to the developing unit, and a rotation axis of the power receiving unit is inclined with respect to the rotation axis of the developing unit.

22. A process cartridge provided with the drive assembly of any one of the above claims 1 to 21.