Patent Description:
An electrophotographic imaging device can be, for example, a photocopier, a printer, a fax machine, an integrated machine, or the like. Generally, this type of imaging device has a chamber for installing a process cartridge, and the process cartridge is detachably installed in the chamber of this type of imaging device. After the process cartridge is installed in the chamber of the imaging device, the process cartridge elastically abuts against the chamber of the imaging device in at least two directions, for example, in an installation direction or in a direction perpendicular to the installation direction, thus enabling the process cartridge to move in a certain space during installation or detachment. A rotational force output head is further provided in the imaging device.

<CIT> refers to a drive assembly and a processing cartridge using the same. The drive assembly is detachably mounted in an image forming device to receive a driving force. The drive assembly comprises a power receiving port and a hub. The power receiving port receives a driving force from the image forming device and transmits the driving force to the hub. The processing cartridge of the image forming device comprises the drive assembly. The processing cartridge controls the power receiving port to rotate to a predetermined position, so as to effectively avoid interference in the process of mounting the drive assembly or the processing cartridge onto the image forming device.

<CIT> refers to a driving force reception assembly for a photosensitive drum, used for receiving the rotating force of a driving head of an image forming device, and transferring the rotating force to a driven rotating component, so as to drive the driven rotating component to rotate. The driving force reception assembly for a photosensitive drum comprises: a power reception portion engaging with an engagement portion of the driving head of the image forming device; a power transfer portion connected to the power reception portion and a driving cooperation portion; and the driving cooperation portion, cooperating with the driven rotating component. The driving force reception assembly engages with the driving head in a manner in which a perpendicular intersection line passing through a center point of the engagement portion and a rotating center line of the driving head forms a fixed angle with a perpendicular intersection line passing through a force bearing point of the power reception portion and a rotating center line of the power transfer portion. Driving force can be stably and reliably transferred, and it can be ensured that the processing box is smoothly assembled and taken out.

In an imaging device in the prior art, the rotational force output head is roughly cylindrical and can rotate around a rotation axis thereof, and two output protrusions are symmetrically arranged at positions perpendicular to the rotation axis. A driving force receiving assembly is disposed at an end of the process cartridge which fits the imaging device. The driving force receiving assembly is provided with a rotational force receiving portion, and the rotational force receiving portion is provided with protruding claws coupled with the output protrusions disposed at one side of the rotational force output head. Generally, in the removal direction of the process cartridge, there is an interference distance of a partial overlap of the protruding claws of the rotational force receiving portion and the output protrusions of the rotational force output head, which will cause certain interference during the installation or the detachment of the process cartridge. In the prior art, a manufacturer of HP or CANON adopts a driving force receiving assembly with a universal joint structure, which enables the process cartridge to be separated from the rotational force output head without interference during detachment, but the manufacture cost is relatively high. In addition, some manufacturers adopt a driving force receiving assembly stretchable axially, or a driving force receiving assembly with a cross slide groove. However, in these two manners, at some positions with certain angles, the driving force receiving assembly may be obstructed by the rotational force output head disposed on a side proximate to the imaging device, thus making it difficult to remove the process cartridge. If the process cartridge is taken out forcibly, the coupled portions of the driving force receiving assembly and the rotational force output head will wear or be damaged, thus seriously affecting service lives of the process cartridge and imaging device.

The technical problem to be solved by the present invention is to provide a process cartridge capable of avoiding or reducing interference between a driving force receiving assembly and a rotational force output head during detachment. In order to solve the technical problem above, the present invention provides a process cartridge removably disposed in an imaging device is provided with a rotational force output head and a door cover, and the process cartridge includes: a cartridge body; a rotation component having a rotation axis; a driving force receiving assembly disposed at an end of the cartridge body, the driving force receiving assembly includes: a rotational force receiving member, provided with a rotational force receiving portion, a connecting portion and a rotational force transmitting portion; a position adjusting mechanism enabling the rotational force receiving member to rotate to a preset position, wherein the connecting portion is disposed between the rotational force receiving portion and the rotational force transmitting portion, and configured to connect the rotational force receiving portion and the rotational force transmitting portion; the position adjusting mechanism comprises: a driven member disposed on the connecting portion of the rotational force receiving member; and an operating assembly configured to exert a force on the driven member and force the rotational force receiving member to rotate to the preset position; the driven member comprises at least one rib, the rib is a portion of the connecting portion, and the rib has a flat first contact surface and an arc-shaped second contact surface which extend outwards from a circumferential outer wall of the connecting portion radially; when the door cover is opened, the position adjusting mechanism enables the rotational force receiving member to rotate to the preset position; and the preset position of the rotational force receiving member is preset to be such that when the rotational force receiving member is located at the preset position, a line drawn between two protruding claws of the rotational force receiving portion is roughly perpendicular to a removal direction of the process cartridge.

In the process cartridge with the above-mentioned structure, the position adjusting mechanism enables the rotational force receiving member to rotate towards a preset position and arrive at the preset position. When the rotational force receiving member is located at the preset position, in the removal direction of the process cartridge, basically, there is no interference between the rotational force receiving portion of the rotational force receiving member and the rotational force output head of the imaging device. When the process cartridge stops working, if the rotational force output head is located at the preset position, the position adjusting mechanism enables the rotational force receiving member to rotate towards the preset position and arrive at a position closest to the preset position. In this case, there will be interference between the rotational force receiving portion of the rotational force receiving member and the rotational force output head of the imaging device, however the interference force is small, and the rotational force receiving portion and the rotational force output head will not be damaged or worn. There is no need to arrange a universal j oint structure for the process cartridge with such a structure, and the process cartridge can be removed from the imaging device directly without axial extension and retraction, nor vertical translation of the driving force receiving assembly, thereby simplifying a removal operation.

Preferably, the position adjusting mechanism includes: a driven member disposed on the connecting portion of the rotational force receiving member; an operating assembly configured to exert a force on the driven member and force the rotational force receiving member to rotate to the preset position.

In the process cartridge with the above structure, the operating component exerts a rotational force to the rotational force receiving member, so that the rotational force receiving member can rotate to the preset position, thereby facilitating the removal of the process cartridge.

Preferably, the driven member includes at least one rib disposed on the connecting portion, and the rib has a first contact surface and an arc-shaped second contact surface.

In the process cartridge with the above structure, the rib receives the rotational force. The structure of the rib is simple.

Preferably, the operating assembly includes a cylindrical member sleeved over an outer side of the rotational force receiving member; at least one bracket is provided on an inner side wall of the cylindrical member; and at least one force receiving part is provided on an outer side wall of the cylindrical member.

In the process cartridge with the above structure, the rotational force can be transmitted to the rotational force receiving member by means of the arranged cylindrical member.

Preferably, the bracket is an elastic arm extending from the inner side wall of the cylindrical member in a radial direction towards an axis of the cylindrical member; a free end of the bracket has a first end surface capable of abutting against the first contact surface and a second end surface capable of being in a sliding contact with the second contact surface.

In the process cartridge with the above structure, when the cylindrical member receives the rotational force that forces the rotational force receiving member to rotate to the preset position, the cylindrical member rotates and abuts the first contact surface by means of the first end surface, thus transmitting the rotational force to the rotational force receiving member, and forcing the rotational force receiving member to rotate to the preset position.

Preferably, the operating assembly further includes a force exerting member, and the force exerting member is configured to exert a rotational force on the force receiving part to force the cylindrical member to rotate.

Preferably, the driving force receiving assembly further includes a push rod, and the force exerting member is arranged at an end of the push rod.

Preferably, the force receiving part includes at least one first protrusion or first groove provided on an outer circumferential wall of the cylindrical member; and the force exerting member includes a second groove meshing with the first protrusion, or a second protrusion meshing with the first groove.

Preferably, the force receiving part and the force exerting member are both tooth-shaped and capable of meshing with each other.

Preferably, the imaging device is provided with a door cover, and when the door cover is opened, the position adjusting mechanism enables the rotational force receiving member to rotate to the preset position.

Preferably, the process cartridge further includes: an end cover disposed at an end of the cartridge body; a hub arranged at an end of the rotation component, the hub having a chamber provided with a first protruding part therein; and a bearing plate disposed at the end of the cartridge body. A first protruding pillar and a second protruding pillar are disposed on a side of the bearing plate facing the hub, and the rotational force receiving member is capable of passing through a bearing orifice of the bearing plate and being coupled with the rotational force output head.

Preferably, the rotation component is a photosensitive drum or a developing roller.

Preferably, the driving force receiving assembly further includes: a first coil spring sleeved on the push rod to exert an elastic force on the push rod; a clutch component including a clutch slide block, a clutch transmission member, and a second coil spring, where the second coil spring is disposed between the clutch transmission member and the hub; and two biasing springs arranged on the first protruding pillar and the second protruding pillar respectively. A first free end of each biasing spring is pressed against a side surface of the rotational force receiving member; a second free end of one biasing spring is pressed against the first protruding pillar, and a second free end of another biasing spring is pressed against the second protruding pillar.

Preferably, the bearing plate defines at least one second through orifice; the clutch slide block is provided with at least one second protruding block; the second protruding block is provided with a sloping surface; the second protruding block is capable of passing through the second through orifice; the push rod is provided with a first protruding block and a force receiving surface , and the first protruding block is capable of abutting against the sloping surface; the end cover defines a first through orifice; an end of the push rod is capable of passing through the first through orifice and moving relative to the first through orifice.

Preferably, the clutch transmission member is further provided with a second protruding part, and the second protruding part meshes with the first protruding part of the hub in an L1-axis direction to transmit a rotational force to the hub.

The process cartridge of the present invention has advantages of convenient and quick detachment operation and low manufacturing cost, etc. The present invention effectively solves the problem that the process cartridge is difficult to remove due to the rotational force output head located at some angle positions, and ensures that, when the imaging device stops working, and wherever the rotational force output head is located, the process cartridge can avoid the interference of the rotational force output head, and then be detached smoothly.

The specific embodiments of the present invention will be further described in detail hereafter with reference to the accompanying drawings.

As shown in <FIG> and <FIG>, a process cartridge <NUM> includes a cartridge body <NUM>. Rotation components such as a photosensitive drum <NUM>, a charging roller (not shown), a developing roller (not shown), and a powder feeding roller (not shown) are disposed in the cartridge body <NUM>. In this embodiment, the photosensitive drum <NUM> can rotate around its own rotation axis L1. Parts of the process cartridge <NUM> of this embodiment, which are identical with those of the process cartridge in the prior art, are omitted for brevity, and the following description is mainly directed to parts of the process cartridge <NUM> of this embodiment different from those of the process cartridge in the prior art. A driving force receiving assembly <NUM>, a hub <NUM>, an end cover <NUM>, and a bearing plate <NUM> are further arranged at an end of the cartridge body <NUM>. The driving force receiving assembly <NUM> can receive a driving force from a rotational force output head <NUM> in an imaging device, and transmits the driving force to a rotation component such as the photosensitive drum <NUM>, thus forcing the rotation component to rotate. The hub <NUM> is arranged at an end of the photosensitive drum <NUM> and coaxial with the photosensitive drum <NUM>.

Referring to <FIG>, and <FIG>, the driving force receiving assembly <NUM> includes a rotational force receiving member <NUM>, a position adjusting mechanism <NUM>, a push rod <NUM>, a first coil spring <NUM>, a clutch component <NUM>, and a biasing spring <NUM>. The rotational force receiving member <NUM> is provided with a rotational force receiving portion <NUM>, a rotational force transmitting portion <NUM> and a connecting portion <NUM>.

The rotational force receiving portion <NUM> is disposed at an end of the rotational force receiving member <NUM>, and two protruding claws <NUM> are symmetrically disposed at an end of the rotational force receiving portion <NUM>. The protruding claws <NUM> can be coupled with output protrusions <NUM> of the rotational force output head <NUM> of the imaging device <NUM>, so as to receive the rotational force from the imaging device <NUM>. The rotational force transmitting portion <NUM> is coupled with the clutch component <NUM>, so as to transmit the rotational force to the photosensitive drum. A part of the rotational force transmitting portion <NUM> has a flat cuboid structure. The connecting portion <NUM> is disposed between the rotational force receiving portion <NUM> and the rotational force transmitting portion <NUM>, and configured to connect the rotational force receiving portion <NUM> and the rotational force transmitting portion <NUM>, on which an elliptical supporting member <NUM> is arranged.

The position adjusting mechanism <NUM> includes a driven member <NUM>, a cylindrical member <NUM>, and a force exerting member <NUM>. The cylindrical member <NUM> and the force exerting member <NUM> constitute an operating assembly of the position adjusting mechanism <NUM> of this embodiment. In this embodiment, the driven member <NUM> includes a rib disposed on a circumferential outer wall of the connecting portion <NUM> of the rotational force receiving member <NUM>, and in this embodiment, two ribs are provided. Each rib has a first contact surface <NUM> and an arc-shaped second contact surface <NUM>. The cylindrical member <NUM> is sleeved over an outer side of the connecting portion <NUM> of the rotational force receiving member <NUM>. After being installed, the driven member <NUM> is located inside the cylindrical member <NUM>. An arc-shaped bracket <NUM> is disposed on the inner side wall of the cylindrical member <NUM>. In this embodiment, the bracket <NUM> is an elastic arm extending from the inner wall of the cylindrical member <NUM> in a radial direction towards the axis of the cylindrical member <NUM>. A free end of the bracket <NUM> has a first end surface <NUM> capable of abutting against the first contact surface <NUM> and a second end surface <NUM> capable of being in a sliding contact with the second contact surface <NUM>. A force receiving part <NUM> is provided on the circumferential outer wall of the cylindrical member <NUM>. The force receiving part <NUM> may include one or more first grooves, or one or more first protrusions. In this embodiment, the force receiving part <NUM> is tooth-shaped, and distributed along a circumferential direction on a whole circle of or partial circle of the outer wall of the cylindrical member <NUM>. In this embodiment, the force receiving member is only arranged along the circumferential direction on the partial circle.

Referring to <FIG>, <FIG>, <FIG>, and <FIG>, the push rod <NUM> is disposed at an end of the cartridge body, and located at an inner side of the end cover <NUM>, and a length direction of the push rod is perpendicular to the axis L1 of the photosensitive drum <NUM>. The end cover <NUM> defines a first through orifice <NUM>, and an end of the push rod <NUM> in the length direction can pass through the first through orifice <NUM>. The force exerting member <NUM> is arranged at an end of the push rod <NUM>, which is proximate to the rotational force receiving member <NUM>, and includes second protrusions or second grooves that can mesh with the force receiving part <NUM>. In this embodiment, the force exerting member <NUM> is tooth-shaped and meshes with the force receiving part <NUM>. The push rod <NUM> is further provided with a force receiving surface <NUM> and a first protruding block <NUM>. The force receiving surface <NUM> is disposed on an outer side of the end cover <NUM> in the direction perpendicular to the axis L1 of the photosensitive drum <NUM>, and configured to receive an external pushing force. In this embodiment, the external pushing force comes from a pressing block <NUM> of the door cover <NUM> of the imaging device <NUM>. When the door cover <NUM> of the imaging device <NUM> is closed, the pressing block <NUM> of the door cover <NUM> presses the force receiving surface <NUM>, forcing the push rod <NUM> to move in a W direction relative to the first through orifice <NUM>. The first coil spring <NUM> is sleeved over the push rod <NUM>. An end of the first coil spring <NUM> is pressed against the push rod <NUM>, and another end is pressed against the end cover <NUM>. The first coil spring <NUM> can exert elastic forces on the push rod <NUM>. When the door cover <NUM> of the imaging device is opened, the push rod <NUM> loses the external pushing force. Under the elastic force of the first coil spring <NUM>, the push rod <NUM> moves in a direction opposite to the W direction to an initial position. When the push rod <NUM> moves in the W direction, the force exerting member <NUM> can exert a rotational force on the force receiving part <NUM>, thus forcing the cylindrical member <NUM> to rotate in an α direction for a certain angle. In this case, when the end of the bracket <NUM> touches the driven member <NUM>, the second end surface <NUM> of the bracket <NUM> is in a sliding contact with the second contact surface <NUM> of the driven member <NUM>, and simultaneously, the second contact surface <NUM> presses against the second end surface <NUM>, thus forcing the bracket <NUM> to elastically deform, so that the second end surface <NUM> slides over the second contact surface <NUM>. At this time, even if the cylindrical member <NUM> rotates, the rotational force receiving member <NUM> does not rotate. When the push rod <NUM> moves in the direction opposite to the W direction under the elastic force of the first coil spring <NUM>, the cylindrical member <NUM> rotates in a direction opposite to the α direction, and the first end surface <NUM> of the bracket <NUM> abuts against the first contact surface <NUM> of the driven member <NUM>. The rotation of the cylindrical member <NUM> drives the rotational force receiving member <NUM> to rotate in the direction opposite to the α direction to a preset position.

Referring to <FIG> and <FIG>, the bearing plate <NUM> defines a second through orifice <NUM> and a bearing orifice <NUM>, and is provided with a first protruding pillar <NUM> and a second protruding pillar <NUM> on a side proximate to the hub <NUM>.

As shown in <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>, two biasing springs <NUM> are arranged on the first protruding pillar <NUM> and the second protruding pillar <NUM> of the bearing plate <NUM>, respectively. Each biasing spring <NUM> has two free ends; a first free end is pressed against a side surface of the supporting member <NUM> of the rotational force receiving member <NUM>, and a second free end is pressed against the first protruding pillar <NUM> or the second protruding pillar <NUM> of the bearing plate <NUM>. When the process cartridge is in a non-working state, the first free end of the biasing spring <NUM> exerts an elastic force on the side surface of the elliptical supporting member <NUM> of the rotational force receiving member <NUM>. The rotational force receiving member <NUM> rotates to an off-line position due to a torque, thereby achieving an effect of assisting the position adjusting mechanism <NUM> in positioning.

Referring to <FIG>, the hub <NUM> has a chamber <NUM>, and a bottom of the chamber <NUM> is provided with a first protruding part <NUM> with a sloping surface extending towards the bearing plate <NUM> along the axis L1.

With reference to <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>, the clutch component <NUM> includes a clutch slide block <NUM>, a clutch transmission member <NUM>, and a second coil spring <NUM>. The clutch transmission member <NUM> is installed and arranged inside the chamber <NUM> of the hub <NUM>, and coaxial with the hub <NUM> and the photosensitive drum. The clutch transmission member <NUM> defines a third through orifice <NUM> allowing the rotational force transmitting portion <NUM> to pass, and is provided with a second protruding part <NUM> that can mesh with the first protruding part <NUM> of the hub <NUM> in an L1-axis direction. When the second protruding part <NUM> and the first protruding part <NUM> of the hub <NUM> mesh with each other in the L1-axis direction, when rotating, the clutch transmission member <NUM> can transmit the rotational force to the hub <NUM>. The second coil spring <NUM> is disposed between the clutch transmission member <NUM> and the hub <NUM>, and can exert an elastic force on the clutch transmission member <NUM> in the L1-axis direction. A second protruding block <NUM> and a third protruding block <NUM> are disposed at an end of the clutch slide block <NUM>, which is proximate to the bearing plate <NUM> in the L1-axis direction. The second protruding block <NUM> and the third protruding block <NUM> are arranged to pass through the two second through orifices <NUM> of the bearing plate <NUM> respectively, so that the clutch slide block <NUM> can reciprocate along the L1-axis direction. The second protruding block <NUM> is provided with a sloping surface <NUM>, and the sloping surface <NUM> can abut against the first protruding block <NUM>. When the force receiving surface <NUM> of the push rod <NUM> moves in the W direction under an external force, the first protruding block <NUM> on the push rod <NUM> presses the sloping surface <NUM>, thus forcing the clutch slide block <NUM> to move towards the hub <NUM> in the L1-axis direction; simultaneously the clutch transmission member <NUM> is pressed, thus forcing the clutch transmission member <NUM> to move towards the hub <NUM> along the L1-axis direction, and making the second protruding part <NUM> of the clutch transmission member <NUM> mesh with the first protruding part <NUM> of the hub <NUM>. Now when the rotational force receiving member <NUM> rotates, the rotational force can be transmitted by the clutch component <NUM> to the hub <NUM>, and then to the photosensitive drum. When the external force exerted on the force receiving surface <NUM> disappears, the push rod <NUM>, under the elastic force of the first coil spring <NUM>, moves in the direction opposite to the W direction, and the first protruding block <NUM> on the push rod <NUM> no longer presses the sloping surface <NUM> of the clutch slide block <NUM>, thus making the clutch slide block <NUM> not press the clutch transmission member <NUM> any longer. Under the elastic force of the second coil spring <NUM>, the second protruding part <NUM> of the clutch transmission member <NUM> is separated from the first protruding part <NUM> on the hub <NUM>. Now when the rotational force receiving member <NUM> rotates, the hub <NUM> does not rotate.

An installation process of the process cartridge <NUM> will be described hereafter with reference to <FIG>, <FIG>, <FIG>, and <FIG>. <FIG> is a schematic structural diagram illustrating the imaging device <NUM> and the process cartridge <NUM> when the door cover <NUM> of the imaging device <NUM> is not closed; <FIG> is a schematic partial structural diagram of the process cartridge <NUM> when the door cover <NUM> of the imaging device <NUM> is not closed, and when the push rod <NUM> of the process cartridge <NUM> is under no external force; <FIG> is a schematic partial structural diagram of the process cartridge <NUM> when the door cover <NUM> of the first embodiment is closed, and when the force receiving surface <NUM> of the push rod <NUM> is pressed by the door cover <NUM>. A pressing block <NUM> is disposed on the door cover <NUM> of the imaging device <NUM>. When the process cartridge <NUM> is installed inside the chamber of the imaging device <NUM>, the protruding claws <NUM> of the process cartridge <NUM> are coupled with the output protrusions <NUM> disposed on the side proximate to the imaging device <NUM>; the door cover <NUM> is closed, and the pressing block <NUM> on the door cover <NUM> presses against the force receiving surface <NUM> of push rod the <NUM>; under the pushing force, the push rod <NUM> moves in the W direction. When the push rod <NUM> moves in the W direction, the force exerting member <NUM> on the push rod <NUM> meshes with the force receiving part <NUM> on the cylindrical member <NUM> and drives the cylindrical member <NUM> to rotate in the α direction, and at this time the rotational force receiving member <NUM> does not rotates.

Referring to <FIG>, and <FIG> and <FIG>, the movement of the push rod <NUM> forces the first protruding block <NUM> on the push rod <NUM> to press the sloping surface <NUM> of the second protruding block <NUM> on the clutch slide block <NUM>, thus forcing the clutch slide block <NUM> to move towards the hub <NUM> along the L1-axis direction; simultaneously the clutch transmission member <NUM> is pressed, thus forcing the clutch transmission member <NUM> to move towards the hub <NUM>, and making the second protruding part <NUM> of the clutch transmission member <NUM> mesh with the first protruding part <NUM> on the hub <NUM>. When the imaging device starts to work, the rotation of the rotational force output head <NUM> of the imaging device will drive the rotational force receiving member <NUM> to rotate, so that the protruding claws <NUM> and the rotational force output head <NUM> are coupled together. Referring to <FIG>, when the process cartridge is in a working state, the rotational force receiving member <NUM> receives the rotational force from the rotational force output head <NUM> of the imaging device, and rotates in the direction opposite to the α direction. During the rotation of the rotational force receiving member <NUM>, and while the second contact surface <NUM> is in a sliding contact with the second end surface <NUM>, the second contact surface <NUM> presses against the second end surface <NUM>, thus making the bracket elastically deform, and enabling the second contact surface <NUM> to slide over the second end surface <NUM>. Then the rotational force receiving member <NUM> continues to rotate, but the cylindrical member <NUM> does not rotate.

The removal process of the process cartridge <NUM> will be described hereafter with reference to <FIG>.

Referring to <FIG>, in this embodiment, the preset position of the rotational force receiving member <NUM> is preset to be such that when the rotational force receiving member <NUM> is located at the preset position, a line drawn between the two protruding claws <NUM> of the rotational force receiving portion <NUM> is roughly perpendicular to a removal p direction of the process cartridge <NUM>.

In this embodiment, when the door cover <NUM> is opened, the door cover <NUM> no longer presses the force receiving surface <NUM> disposed on the push rod <NUM>, and the push rod <NUM>, under the elastic force of the first coil spring <NUM>, moves in the direction opposite to the W direction. When the push rod <NUM> moves in the direction opposite to the W direction, the first protruding block <NUM> on the push rod <NUM> is separated from the sloping surface <NUM> of the second protruding block <NUM> on the clutch slide block <NUM>, and the clutch slide block <NUM> no longer presses the clutch transmission member <NUM>. Under the elastic force of the second coil spring <NUM>, the second protruding part <NUM> of the clutch transmission member <NUM> is separated from the first protruding part <NUM> on the hub <NUM>. As the push rod <NUM> continues to move along the direction opposite to the W direction, the force exerting member <NUM> on the push rod <NUM> meshes with the force receiving part <NUM> of the cylindrical member <NUM>, and the continuous movement of the push rod <NUM> in the direction opposite to the W direction will drive the cylindrical member <NUM> to rotate along the direction opposite to the α direction. Moreover, the bracket <NUM> on the cylindrical member <NUM> drives the driven member <NUM> on the rotational force receiving member <NUM> to rotate together, thus forcing the rotational force receiving member <NUM> to rotate together towards the preset position in the direction opposite to the α direction.

When the imaging device stops working, the rotational force output head <NUM> and the rotational force receiving member <NUM> stop rotating and stop at random positions. However, after being adjusted by the position adjusting mechanism, the positions of the rotational force output head <NUM> and the rotational force receiving member <NUM> can be basically classified into three cases.

It is assumed that the direction shown by an arrow p is the removal direction of the process cartridge; H1 denotes the maximum distance along the removal direction p of the process cartridge and between projections of ends of the two output protrusions <NUM> symmetrically arranged on the rotational force output head <NUM>; and H denotes the minimum distance along the removal direction p of the process cartridge and between projections of two closest points between the two protruding claws <NUM> symmetrically arranged on the rotational force receiving member <NUM> when the rotational force receiving member <NUM> is located at the preset position.

<FIG> is a schematic diagram illustrating an arbitrary positional relationship between the output protrusions <NUM> of the rotational force output head and the two protruding claws <NUM> symmetrically arranged on the rotational force receiving member <NUM> when the imaging device stops working. In this case, if the process cartridge is directly removed, there will be interference therebetween in the removal direction, which will cause wear of the output protrusions <NUM> and the protruding claws <NUM>. <FIG> is a schematic diagram illustrating the positional relationship between the output protrusions <NUM> and the protruding claws <NUM> after a position adjustment is performed by the position adjusting mechanism. As shown in <FIG>, the rotational force output head <NUM> cannot rotate, however, when the door cover <NUM> is opened, by means of the adjustment of the position adjusting mechanism, the rotational force receiving member <NUM> rotates to the preset position in the direction opposite to the α direction. At this time, H1<H, and in the removal p direction of the process cartridge, there is no interference between the protruding claws <NUM> and the output protrusions <NUM>. Referring to <FIG>, the process cartridge can be removed from the imaging device smoothly.

<FIG> is a schematic diagram illustrating another arbitrary positional relationship between the output protrusions <NUM> of the rotational force output head and the two protruding claws <NUM> symmetrically arranged on the rotational force receiving member <NUM> when the imaging device stops working. In this case, if the process cartridge is removed directly, there will be interference therebetween in the removal direction, which will cause the wear of the output protrusions <NUM> and the protruding claws <NUM>. <FIG> is a schematic diagram illustrating a positional relationship between the output protrusions <NUM> and protruding claws <NUM> after an adjustment is performed by the position adjusting mechanism. As shown in <FIG>, by means of the adjustment of the position adjustment device, the rotational force receiving member <NUM> rotates to the preset position in the direction opposite to the α direction. In this case, although H1>H, there will be certain interference between the protruding claws <NUM> and the output protrusions <NUM>. However, there is space allowing a free movement of the process cartridge received inside the chamber of the imaging device in a q direction that is roughly perpendicular to the removal p direction of the process cartridge, thereby enabling the process cartridge to move in the q direction. Referring to <FIG>, in this case, if only the process cartridge is moved slightly, it can be removed from the imaging device smoothly.

<FIG> is a schematic diagram illustrating a positional relationship between the output protrusions <NUM> of the rotational force output head <NUM> and the two protruding claws <NUM> symmetrically arranged on the rotational force receiving member <NUM>, when the imaging device stops working, and when the output protrusions <NUM> of the rotational force output head <NUM> are located at the preset position of the rotational force receiving member <NUM>. In this case, if the process cartridge is removed directly, there will be interference therebetween in the removal direction, which will cause wear of the output protrusions <NUM> and the protruding claws <NUM>. <FIG> is a schematic diagram illustrating a positional relationship between the output protrusions <NUM> and the protruding claws <NUM> after an adjustment is performed by the position adjusting mechanism. As shown in <FIG>, by means of the adjustment of the position adjusting device, the protruding claws <NUM> on the rotational force receiving member <NUM> rotates in the direction opposite to the α direction till they are obstructed by the output protrusions <NUM>. In this case, the rotational force receiving member cannot rotate to the preset position, but to a position closest to the preset position. In this case, since H1>H, there will be certain interference between the protruding claws <NUM> and the output protrusions <NUM> during the removal of the developing cartridge. However, there is space allowing a free movement of the process cartridge received inside the chamber of the imaging device in the q direction that is roughly perpendicular to the removal p direction of the process cartridge, thereby enabling the process cartridge to move in the q direction. Referring to <FIG>, in this case, if only the process cartridge is moved slightly, it can be removed from the imaging device smoothly.

A structure of the process cartridge of the second embodiment is basically the same as the process cartridge <NUM> of the first embodiment, and the differences therebetween are that the structures of the force receiving members and the force exerting members of the cylindrical members of two embodiments are different respectively.

Claim 1:
A process cartridge (<NUM>), configured to be removably disposed in an imaging device (<NUM>), wherein the imaging device (<NUM>) is provided with a rotational force output head (<NUM>) and a door cover (<NUM>), and the process cartridge (<NUM>) comprises:
a cartridge body (<NUM>);
a rotation component having a rotation axis (L1);
a driving force receiving assembly (<NUM>) disposed at an end of the cartridge body (<NUM>);
the driving force receiving assembly (<NUM>) comprises:
a rotational force receiving member (<NUM>), provided with a rotational force receiving portion (<NUM>), a connecting portion (<NUM>), and a rotational force transmitting portion (<NUM>); and
a position adjusting mechanism (<NUM>) enabling the rotational force receiving member (<NUM>) to rotate to a preset position;
characterized in that,
the connecting portion (<NUM>) is disposed between the rotational force receiving portion (<NUM>) and the rotational force transmitting portion (<NUM>), and configured to connect the rotational force receiving portion (<NUM>) and the rotational force transmitting portion (<NUM>);
the position adjusting mechanism (<NUM>) comprises:
a driven member (<NUM>) disposed on the connecting portion (<NUM>) of the rotational force receiving member (<NUM>); and
an operating assembly configured to exert a force on the driven member (<NUM>) and force the rotational force receiving member (<NUM>) to rotate to the preset position;
the driven member (<NUM>) comprises at least one rib, the rib is a portion of the connecting portion (<NUM>), and the rib has a flat first contact surface (<NUM>) and an arc-shaped second contact surface (<NUM>) which extend outwards from a circumferential outer wall of the connecting portion (<NUM>) radially;
when the cartridge is disposed in the imaging device and the door cover (<NUM>) is opened, the position adjusting mechanism (<NUM>) enables the rotational force receiving member (<NUM>) to rotate to the preset position; and
the preset position of the rotational force receiving member (<NUM>) is preset to be such that when the rotational force receiving member (<NUM>) is located at the preset position, a line drawn between two protruding claws (<NUM>) of the rotational force receiving portion (<NUM>) is roughly perpendicular to a removal direction of the process cartridge (<NUM>).