CN108614402A - Handle box and drive component - Google Patents

Abstract

The invention provides a process box and a drive assembly, which relate to the technical field of image forming equipment and are used to solve the problem of poor printing quality caused by the inability of the existing drive assembly for the process box to ensure that the axis of the rotating component is coaxial with the axis of the drive component during rotation. technical problems. The process cartridge includes a process cartridge frame and a drive assembly disposed near one end of the process cartridge frame, the drive assembly includes a drive portion, and an end portion of the drive portion is provided with a protrusion engaged with the image forming device for transmission The engaging part of the power; the drive assembly also includes a sleeve, the drive part is arranged in the sleeve, and the drive part is also provided with a ring in the circumferential direction to adjust the rotation of the drive part relative to the sleeve The self-adaptive adjustment part protrudes along the direction perpendicular to the axis of the driving part. The process cartridge provided by the present invention is applied to an image forming apparatus.

Description

Process box and drive components

The present invention is a divisional application with the filing date of "November 13, 2014", the application number of "201410642209.8", and the title of the invention "a driving assembly for a process cartridge, a photosensitive drum unit, a process cartridge and an image forming device".

technical field

The invention relates to the technical field of image forming equipment, in particular to a process box and a driving assembly.

Background technique

Laser printing technology is very popular with users due to its advantages in printing costs. A detachable process box is installed in the laser printer (one of the image forming devices) in the prior art, and a rotating element is arranged on the process box, and these rotating elements include at least one of a developing element, a photosensitive drum, and a charging element. , these rotating elements, as an essential part of the process cartridge, can be directly or indirectly driven by the rotational force applied by the driving mechanism in the laser printer after being installed in the laser printer.

As shown in Fig. 1-Fig. 2, a kind of cooperating mode of the existing rotating part and the driving mechanism in the laser printer is: the driving mechanism in the laser printer 0001 is provided with a protrusion 0002, and the end of the rotating part 0006 in the process box is provided with A coupling part 0007, the end of the rotating part 0006 is connected with the coupling part 0007 through a universal ball; when the door cover 0005 of the laser printer is opened, and the process box is installed to the process box installation part 0003 of the laser printer 0001, the coupling Part 004 will have a forward tilting process (shown in Fig. 2 (a)) along guide rail 0004, can engage with protrusion 0002 well like this, when process box is installed to predetermined position, fit part 0004 and protrusion 0002 Coaxial gnawing (as shown in Figure 2(b)), so that the coupling part 0007 can transmit power to the rotating part 0006 well; when the process cartridge is taken out, the coupling part 0004 and the protrusion will also appear directly Tilted so that the process cartridge can be easily removed from the laser printer.

The inventor found in the process of realizing the present invention that the above-mentioned engaging mechanism has disadvantages: the coupling part 0007 cannot be well installed on the predetermined track, and engages with the protrusion 0002 on the driving mechanism, that is, the engaging pawl of the coupling part 0004 cannot be well connected with The transmission pin on the protrusion 0002 is engaged, which will affect the normal installation of the process cartridge. Moreover, it cannot be well ensured that the axis of the rotating component is well coaxial with the axis of the driving component during the rotation process, resulting in problems in printing quality.

Contents of the invention

The object of the present invention is to provide a process box and a drive assembly to solve the technical problem that the existing process box drive assembly cannot ensure that the axis of the rotating component is coaxial with the axis of the drive component during rotation, resulting in poor printing quality.

In order to achieve the above object, the present invention provides the following technical solutions:

A first aspect of the present invention provides a process cartridge, which is detachably installed in an image forming device, a protrusion is provided in the image forming device, the process cartridge includes a process cartridge frame and a A driving assembly, the driving assembly includes a driving part, the end of the driving part is provided with an engaging part that engages with the protrusion of the image forming device for power transmission; the driving assembly also includes a sleeve, the The driving part is arranged in the sleeve; an adaptive adjustment part for adjusting the rotation of the driving part relative to the sleeve is also provided in the circumferential direction of the driving part, and the self-adaptive adjustment part is along with the The direction perpendicular to the axis of the driving part protrudes.

Preferably, the driving part includes a connecting post connected to the engaging part, and the self-adaptive adjustment part is arranged on the connecting post.

Preferably, the self-adaptive adjustment part is arranged on the outer surface of the connecting column and extends in a direction perpendicular to the axis of the driving part.

Further, the self-adaptive adjustment part is a pair of protruding teeth protruding along the outer surface of the connecting column, and is arranged symmetrically in the circumferential direction of the connecting column.

Preferably, the distance between the outer surface of the part of the connecting post where the protruding teeth is provided and the axis of the driving part is greater than the distance between the outer surface of the part of the connecting post where the protruding teeth are not provided and the axis of the driving part.

Preferably, at least a portion of the driving portion is exposed outside the cartridge frame.

Preferably, the engaging part is an engaging pawl, and the engaging pawl protrudes along the axial direction of the driving part.

Further, the engaging claws are a pair, which are symmetrically arranged at the end of the engaging part along the circumferential direction of the engaging part.

Preferably, the pair of protruding teeth and the pair of engaging pawls are arranged at 90° to each other in the circumferential direction of the driving part.

Preferably, a groove is provided on the driving part, and a pair of engaging claws are arranged on the circumferential surface of the groove.

Preferably, a guide rail for guiding the installation of the process cartridge is provided inside the image forming apparatus, and when the process cartridge is installed into the image forming apparatus, the self-adaptive adjustment part abuts against the guide rail and drives the portion rotates relative to the sleeve.

Preferably, when the self-adaptive adjustment part is in the installation direction of the process cartridge, the self-adaptive adjustment part does not abut against the guide rail and does not make the driving part rotate; when the self-adaptive adjustment part is not When it is in the installation direction of the process box, the self-adaptive adjustment part abuts against the guide rail during the installation process of the process box, and makes the driving part rotate relative to the sleeve.

Preferably, a guide rail for guiding the installation of the process cartridge is provided inside the image forming apparatus, and when the process cartridge is installed into the image forming apparatus, the protruding tooth abuts against the guide rail and makes the driving part face to face. Rotate on the sleeve.

Further, when the protruding tooth is in the installation direction of the process cartridge, the protruding tooth does not abut against the guide rail and does not make the driving part rotate; when the protruding tooth is not in the installation direction of the process cartridge When the direction is in the direction, the protruding tooth abuts against the guide rail during the process of installing the process cartridge, and makes the driving part rotate relative to the sleeve.

Preferably, the driving assembly further includes a coupling, the coupling is connected to the driving part, and the driving part transmits power to the sleeve through the coupling.

Preferably, the coupling is an Oldham coupling, and the driving part can move radially relative to the sleeve when connected to the coupling.

Preferably, the process cartridge further includes a photosensitive drum, and the sleeve is fixedly connected to the photosensitive drum.

The second aspect of the present invention provides a driving assembly, the driving assembly includes: a driving part and a sleeve, the driving part is arranged in the sleeve and transmits power to the sleeve, and the driving part includes a receiving The power engaging part and the connecting column connected with the engaging part are characterized in that: an adaptive adjustment part for adjusting the rotation of the driving part relative to the sleeve is arranged on the outer surface of the connecting column. The adjusting portion protrudes in a direction perpendicular to the axis of the driving portion.

Preferably, the self-adaptive adjustment part is a pair of protruding teeth protruding along the outer surface of the connecting column, and is arranged symmetrically in the circumferential direction of the connecting column.

Preferably, the cross-sectional shape of the portion of the connecting column where the protruding teeth are provided is non-circular.

Preferably, it is characterized in that: the engaging part is an engaging claw, and the engaging claw protrudes along the axial direction of the driving part.

Further, the engaging claws are a pair, which are symmetrically arranged at the end of the engaging part along the circumferential direction of the engaging part.

Preferably, the pair of protruding teeth and the pair of engaging pawls are arranged at 90° to each other in the circumferential direction of the driving part.

Preferably, a groove is provided on the driving part, and a pair of engaging claws are arranged on the circumferential surface of the groove.

Preferably, the drive assembly is detachably installed in a process box, and the process box is detachably installed in an image forming device, and a guide rail for guiding the installation of the process box is provided in the image forming device , during the process of installing the process cartridge into the image forming apparatus, the self-adaptive adjustment part abuts against the guide rail, and makes the driving part rotate relative to the sleeve.

Preferably, when the self-adaptive adjustment part is in the installation direction of the process cartridge, the self-adaptive adjustment part does not abut against the guide rail, and does not make the driving part rotate; when the self-adaptive adjustment part When not in the installation direction of the process cartridge, the self-adaptive adjustment part abuts against the guide rail during the installation process of the process cartridge, and makes the driving part rotate relative to the sleeve.

Preferably, the driving assembly further includes a coupling, the coupling is connected to the driving part, and the driving part transmits power to the sleeve through the coupling.

Preferably, the coupling is an Oldham coupling, and the driving part can move radially relative to the sleeve when connected to the coupling.

Preferably, the process cartridge further includes a photosensitive drum, the sleeve is fixedly connected to the photosensitive drum, and the photosensitive drum receives rotational power through the driving assembly.

After adopting the above-mentioned technical solution, since the self-adaptive adjustment part on the driving assembly can make the engaging part on the driving part not interfere with the driving part in the image forming device during the installation process, the engaging part can be well integrated with the image forming device. The driving parts in the image forming device are engaged; and the driving part will not be inclined during installation, so the power can be well transmitted to the rotating parts in the process box, ensuring a good printing effect of the image forming device. Further, the coupling connected with the driving part is set as a cross coupling, especially the groove and the protrusion in the cross coupling adopt a slope, so that the driving part can move in the process of axial translation. There is a larger stroke along the axial direction, which is more conducive to the detachment of the driving part from the driving part in the image forming device.

Description of drawings

Fig. 1 is a partial view of a laser printer in the prior art;

Fig. 2a and Fig. 2b are schematic diagrams of cooperation between the photosensitive element on the process cartridge and the drive gear in the image forming device in the third prior art;

FIG. 3 is a schematic structural view of a process cartridge provided in Embodiment 1 of the present invention;

Figure 4 is an exploded schematic view of the process cartridge in Figure 3;

5 is a cross-sectional view of the drive assembly and the support member in the process cartridge provided by Embodiment 1 of the present invention;

FIG. 6 is a schematic structural view of a photosensitive drum assembly provided by Embodiment 1 of the present invention;

FIG. 7 is a schematic structural diagram of a drive assembly provided by Embodiment 1 of the present invention;

Fig. 8 is an exploded schematic view of the driving assembly provided by Embodiment 1 of the present invention;

Fig. 9 is a schematic structural diagram of a driving part in a driving assembly provided by Embodiment 1 of the present invention;

Fig. 10 is a schematic structural view of the first part of the coupling in a drive assembly provided by Embodiment 1 of the present invention;

Fig. 11 is a schematic structural view of a sleeve in a drive assembly provided by Embodiment 1 of the present invention;

Fig. 12 is a schematic structural diagram of a clip spring in a drive assembly provided by Embodiment 1 of the present invention;

Fig. 13 is an exploded schematic diagram of a drive assembly provided by Embodiment 2 of the present invention;

Fig. 14 is a structural diagram of a driving part in a driving assembly provided by Embodiment 2 of the present invention;

Fig. 15 is a schematic structural diagram of a power transmission column in a drive assembly provided by Embodiment 2 of the present invention;

Fig. 16 is an assembly diagram of a power transmission column, a buckle and a spring in a drive assembly provided by Embodiment 2 of the present invention;

Fig. 17 is a schematic structural diagram of a sleeve in a drive assembly provided by Embodiment 2 of the present invention;

FIG. 18 is a schematic structural diagram of an image forming device provided in Embodiment 3 of the present invention;

FIG. 19 is a schematic structural diagram of guide rails in an image forming device according to Embodiment 3 of the present invention;

FIG. 20 is a schematic structural diagram of protrusions in an image forming device according to Embodiment 3 of the present invention;

FIG. 21 is a schematic structural diagram of a process cartridge in a first state in an image forming apparatus provided by Embodiment 3 of the present invention;

Fig. 22 is a partially enlarged schematic diagram of Fig. 21;

FIG. 23 is a schematic structural diagram of a process cartridge in a second state in an image forming apparatus provided by Embodiment 3 of the present invention;

Fig. 24 is a partially enlarged schematic diagram of Fig. 23;

FIG. 25 is a schematic structural diagram of a process cartridge in a third state in an image forming apparatus provided by Embodiment 3 of the present invention;

Fig. 26 is a partial schematic diagram of a process cartridge in a first state in an image forming apparatus according to Embodiment 4 of the present invention;

FIG. 27 is a partial schematic diagram of a process cartridge in a second state in an image forming apparatus according to Embodiment 4 of the present invention.

Detailed ways

In order to make those skilled in the art more easily and clearly understand the technical solutions involved in the present invention, the following description will be made in conjunction with specific embodiments.

Embodiment one

As shown in FIG. 3 to FIG. 5 , a process cartridge 1 provided by Embodiment 1 of the present invention is detachably installed in an image forming apparatus (details will be described in Embodiment 5). As shown in Figure 3, the process cartridge 1 comprises a process cartridge frame 2, a driving assembly 4 that accepts the driving force in the image forming device, a support member 3 arranged on the side wall of the process cartridge frame 2, and a through hole is arranged on the support member 3, The driving part 40 of the driving assembly 4 can pass through the through hole, and at least a part of the driving part is exposed outside the process cartridge frame 2 .

As shown in Fig. 4 and Fig. 5, the process cartridge 1 includes a toner bin 21 for accommodating carbon powder (a developer), a waste toner bin 22 for accommodating waste toner, and a photosensitive drum unit 5; 3 month-shaped circular arcs 21d, 22d are respectively provided to support the above-mentioned supporting parts; the inner wall of the supporting part 3 is provided with guiding slopes 31, 32 to limit the swing of the drive assembly 4, and the powder bin 21 is provided with extension parts 21a, 21b, and the waste powder bin 22 There are through holes 22a, 22b on the top, and the extension parts 21a, 21b and the through holes 22a, 22b are respectively hinged together by pins; one end of the photosensitive drum unit 5 is supported by the support member 3, and the other end is fixedly connected to the waste toner bin 22 by pins. on the through hole 22c. The driving assembly 4 receives the driving force from the image forming device to drive the photosensitive drum to rotate, and the outside of the sleeve 44 of the driving assembly 4 is provided with a helical gear 4a, and the helical gear 4a can also transmit power through the gear 21c at the end of the magnetic roller 21e to The magnet roller 21e, the axis of the magnet roller 21e and the photosensitive drum is always kept substantially parallel.

As shown in FIG. 5, in the driving assembly 4, the driving part 40 receiving the driving force of the image forming device is sleeved in the sleeve 44 through the coupling, and a spring 45 is arranged between the coupling and the inner wall of the sleeve 44, so that The driving part 40 can expand and contract axially relative to the inner wall of the sleeve 44 ; it is convenient for the process cartridge 1 to be well installed in the image forming apparatus.

As shown in FIG. 6, a photosensitive drum unit 5 provided in this embodiment includes a photosensitive drum 50 capable of transferring an image to an image medium (such as paper), a drive assembly 4 arranged at the end of the photosensitive drum 50, and a photosensitive drum It includes a hollow cylinder, and a layer for forming an electrostatic latent image is provided on the surface of the cylinder; the rotation axis of the drive assembly 4 is substantially coaxial with the rotation axis of the photosensitive drum 50; the structure of the drive assembly 4 will be described in detail below describe.

As shown in Figures 7 and 8, the driving assembly 4 includes a driving part 40 that accepts the driving force of the image forming device, and a sleeve 44 in which the driving part 40 is sleeved in the driving assembly 4. The diameter of the outer wall 4b of the sleeve 44 is roughly the same as that of the photosensitive The inner diameter of the drum 50 is such that the sleeve of the drive assembly can be fitted into the photosensitive drum 50 by embedding, and the drive assembly 4 will not come out of the photosensitive drum 50 .

As shown in Fig. 8 and Fig. 9, the preferred engaging part 40 of this embodiment can cooperate with the protrusion 1002 in the image forming device in Fig. 20. The protrusion 1002 includes a drive rod 1002d connected with the motor, and a drive rod 1002d arranged at the front end of the drive rod 1002d. A tapered ball head 1002a, and driving pins 1002b, 1002c arranged on both sides of the driving rod 1002d. The driving assembly 4 includes an engaging portion 40, and the engaging portion 40 is provided with an engaging portion that accepts the driving force and an adaptive adjustment portion that adjusts the rotation of the engaging portion; preferably, the driving portion 40 is provided with a groove 40e, and the engaging portion is two The engaging claws 40c, 40d are symmetrically arranged in the axial direction of the driving part, and the engaging claws 40c, 40d are arranged on the circumferential surface of the groove 40e, and the engaging claws 40c, 40d can extend along the axial direction of the driving part 40; In this way, when the driving part 40 is engaged with the protrusion 1002, the conical ball head 1002a is located in the groove 40e, and the driving pins 1002b, 1002c are respectively engaged with the engaging claws 40c, 40d, so that the protrusion 1002 receives the power from the motor and transmits it to the drive. Section 40. Preferably, the adaptive adjustment part on the driving part 40 is arranged on the circumferential surface of the groove 40e, and along the extension parts 40a, 40b perpendicular to the axial direction of the driving part, the extension parts 40a, 40b and the engaging claws 40c, 40d They are arranged approximately at 90° to each other on the circumferential surface of the grooves 40e.

Preferably, two grooves are symmetrically arranged on the stud of the driving part 40, each groove is provided with a first plane 403, the first plane is approximately perpendicular to the axis of the driving part; the second plane 404 is approximately perpendicular to the axis of the driving part. The central axis is parallel; the first arc surface 405 is set at a position opposite to the first plane.

As shown in Fig. 5 and Fig. 8, the driving part is sleeved in the sleeve 44 through a coupling, and a telescopic part is arranged between the coupling and the sleeve 44 to control the axial expansion and contraction of the driving part 40 and the coupling. Preferably, the telescopic part is a spring 45 sleeved on the end of the coupling, one end of the spring abuts against the inner wall of the sleeve, and the other end abuts against the coupling; and the end of the coupling has a groove 43a, The coupling is clamped on the sleeve 44 through an E-shaped clamping spring as shown in FIG. 12 being engaged with the groove 43 a, so as to prevent the driving part 40 and the coupling from coming out of the sleeve 44 .

As shown in Figure 8, the coupling is a cross coupling, which includes a first member 41, a second member 42, and a third member 43, and the first member 41 includes a protruding "I"-shaped protrusion 41a , the second member 42 includes a chute 42b cooperating with the protrusion 41a in the first member and a protrusion 42a opposite to the chute 42, and the third member 43 includes a groove 43e engaged with the protrusion 42a in the second member. 44 The pins 43c and 43d for power transmission, the cylinder 43b of the sleeve spring 45, and the groove 43a for matching with the E-shaped retaining spring 51. As shown in FIG. 5, preferably, the sliding surface between the groove 43e and the protrusion 42a has a certain inclination with the axis of the driving part, so that the driving part 40 can have a greater axial movement in the process of axial translation. The stroke is more conducive to the detachment of the driving part 40 from the protrusion 1002 in the image forming device.

As shown in Figure 8 and Figure 11, the sleeve 44 is provided with a helical gear 4a on the outside to accommodate the cavity 44b of the coupling, and the sleeve 44 is provided with a through hole 44d through which the upper cylinder 43a of the coupling can pass , two symmetrical grooves 44a, 44e are provided on the inner wall of the sleeve 44, and the grooves cooperate with the power transmission pins 43c, 43d on the coupling respectively, so as to transmit the rotational force of the driving part 40 to the sleeve 44, thereby The drive drives the rotation of the photosensitive drum 50 .

As shown in Fig. 8 and Fig. 10, preferably, a mechanism for controlling the one-way rotation of the driving part 40 is provided between the coupling and the driving part 40, and the mechanism includes a through hole provided in the first member 41 of the coupling The springs 46 and 47 in 41d and 41e, the cylinders 48 and 49, one end of the cylinders 48 and 49 are respectively inserted into the through holes 41d and 41e, and the other ends are respectively matched with two grooves arranged symmetrically on the studs, and the springs 46 and 47 One end is respectively sleeved in the cylinders 48, 49, and the other end is in contact with the surface of the second member 42; like this when the driving part 40 moves along the direction A in Fig. 9, because the cylinders 48, 49 abut against the first plane, and The first plane is substantially parallel to the axis of the driving part, so the rotation of the driving part 40 is prevented; but when the driving part 40 moves along the B direction in Figure 9, the first arc surface 405 can be along the B direction, to the cylinder 48, 49 exerts a force so that the cylinders 48, 49 constantly press the springs 46, 47 so that the cylinders do not prevent the drive from rotating in the B direction. Therefore, the mechanism can control the driving part 40 to rotate in one direction. Preferably, the end of the driving part 40 can pass through the through hole 41f on the first member 41, and then the E-shaped retaining spring prevents the driving head from coming out of the coupling.

Embodiment two

As shown in Figures 13 to 17, another driving assembly is provided, the other parts are the same as in the first embodiment, including the driving part 140, the coupling, the control mechanism for controlling the one-way rotation of the driving part, and the sleeve for accommodating the coupling 148, a telescopic mechanism for controlling the axial telescopic expansion of the shaft coupling and the driving part. Preferably, the driving part 140 includes an engaging part that accepts power on the protrusion 1002 in the image forming device, and the engaging part has the same engaging claw 140a as that in Embodiment 1, and the engaging claw is symmetrically arranged on the circumferential surface of a groove; The difference is that the driving part includes an engaging part, a protrusion 140d and a connecting column 140c connecting the protrusion 140d and the engaging part, the protrusion 140d of the driving part is directly set as a part of the coupling, and the self-adaptive adjustment part is arranged on the connecting column Two protrusions 140b are arranged symmetrically on the side wall. The coupling of this embodiment can omit the first member in the first embodiment, and also includes the second member 141 and the third member 142, and the second member 141, the third member 142 and the protrusion 140d are also connected by a cross coupling device connected. It should be noted that the second member 141 of the coupling is only for allowing the drive part and the sleeve (photosensitive drum) to slide in more directions. If the technical solution provided by this embodiment is simplified, the second member 141 can be omitted. Two components 141 .

As shown in FIG. 13, a support cap 146 is also provided between the coupling and the sleeve 148, and the support cap is used to support the third member 142. The support cap 146 and the third member 142 can also be provided as an integrated structure. In this embodiment, preferably, the two are arranged in a separate structure for the convenience of installing the spring in the ratchet mechanism described below. Between the support cap 146 and the sleeve 148 is provided the same spring 147 as in the first embodiment. The end of the support cap 146 is also fixed on the outside of the sleeve by an E-shaped jumper.

As shown in Fig. 13, Fig. 15, Fig. 16 and Fig. 17, in this embodiment, the sleeve 148 is fixedly connected with the photosensitive drum, and the protrusion 140d at the end of the driving part 140 is set as a part of the coupling, so the driving part 140 cannot Rotate around the coupling, but by controlling the coupling to rotate in one direction around the drive sleeve, the drive part can be controlled to rotate in one direction around the sleeve, and the sleeve and the photosensitive drum are fixedly connected, so the drive part 140 can rotate around the photosensitive drum The drum rotates in one direction. Preferably, in this embodiment, the unidirectional rotation of the shaft coupling around the sleeve is controlled by a ratchet mechanism; specifically, the ratchet mechanism includes a spring 145 arranged in the chute 142c at the end of the third member 142, which can rotate around the third member 142 respectively. The loose pieces 143 , 144 rotated by the circular arcs 142 b , 142 d inside the member 142 , one end of the loose pieces 143 , 144 is provided with an arc surface corresponding to the circular arcs 142 b , 142 d , and the other end is provided with a plane contacting the sleeve 148 . As shown in FIG. 16 , the spring 145 causes at least a portion of the loose parts 143 , 144 to be outside the third member 142 . As shown in FIG. 17, the sleeve 148 includes a housing portion 148a for accommodating the shaft coupling, a gear 148d; a groove symmetrically arranged on the inner wall of the sleeve 148, the groove includes a first plane 148b parallel to the axial direction of the sleeve, and The first plane 148b is opposite to the arc surface 148c. In this way, when the drive assembly is assembled, the planes of the ends of the loose parts 143, 144 are located in the grooves in the sleeve 148, and when the coupling rotates along the direction C in Fig. The plane abuts against the first plane 148b of the groove in the sleeve, so the rotation of the coupling member along the C direction is prevented; and when the coupling rotates along the D direction in Figure 17, the arc surface 148c in the sleeve The loose parts 143, 144 will be squeezed, and the loose parts will further compress the spring 145;

It should be noted that the adaptive adjustment part in this embodiment can also be set to be the same as that in the first embodiment; and the mechanism for controlling the one-way rotation of the driving part 140 can also use the structure in the first embodiment.

Embodiment three

As shown in FIGS. 18-25 , an image forming apparatus is provided, including an image forming device and a process cartridge detachably installed in the image forming device; the process cartridge is preferably the process cartridge provided in Embodiment 1, and the image forming device 1000 includes The process box installation part 1001 of process box can be installed; Drive mechanism, drive mechanism comprises motor, provides source power to the rotary element in the process box, such as photosensitive drum, magnetic roller (or developing roller), and drive mechanism also comprises a direct and processing The protrusion 1002 matched with the drive assembly in the box, the power is transmitted between the protrusion 1002 and the motor through a gear or a belt; the image forming device also includes a guide rail 1003 for guiding the installation of the process box and a cover 1004 for stably installing the process box into the process box installation part 1001 . Preferably, the guide rail 1003 includes a first stepped surface 1003a, a second stepped surface 1003b parallel to the first stepped surface in the horizontal direction, a third stepped surface connected to the second stepped surface 1003b and inclined to the second stepped surface 1003b 1003c, and the size of the third step surface 1003c in the axial direction of the photosensitive drum in the process cartridge increases gradually along the installation direction of the process cartridge; a circular arc portion 1003d is also provided on the guide rail 1003, when the process cartridge is completely installed to the image When forming in the device, the front end of the process cartridge abuts against the arc portion 1003d. Preferably, the protrusion 1002 includes a driving rod 1002d, a conical ball head 1002a disposed at the front end of the driving rod 1002d, and driving pins 1002b, 1002c disposed at both sides of the driving rod 1002d.

Preferably, the driving assembly in the process cartridge in this embodiment is the driving assembly 4 described in the second embodiment.

As shown in Figures 21 and 22, it is a schematic view of the structure of the process cartridge 1 installed in the image forming apparatus in the first state; In the installation direction of the box, it is located in front of the axial direction of the driving part 40, and the engaging claws 40c, 40d protrude in the axial direction of the driving part, so during the installation process, the engaging claw 40c or the engaging claw 40d will collide with the tapered ball at the front end of the driving part 1002. The head 1002a interferes, affecting the installation of the process cartridge 1. Therefore, in this embodiment, the driving part 4 is preferably provided with two extension parts 40a, 40b as self-adaptive adjustment parts, which will pass through the extension part 40a or 40b and the third step surface 1003c on the guide rail during the process of installing the process cartridge. Collision, the engaging claws 40c, 40d are automatically adjusted to avoid interference with the tapered ball head 1002a.

As shown in Figures 23 and 24, it is a schematic view of the structure of the process cartridge 1 installed in the image forming apparatus in the second state; in this state, the extension part 40a or the extension part 40b is located on the axis of the drive part 40 in the process cartridge installation direction. Therefore, the engaging claws 40c, 40d themselves will not interfere with the tapered ball head 1002a, so the extensions 40a, 40b as adaptive adjustment parts do not need to adjust the state of the driving part 40 by means of guide rails. And as described in detail in Embodiment 2, there is also a mechanism for controlling the one-way rotation of the drive part 40 between the coupling and the drive part 40 in the drive assembly 4, preferably, the direction in which the drive part 40 can rotate in one direction It is clockwise in FIG. 22 ; therefore, the driving part 40 will not rotate randomly during the installation process, which is more conducive to controlling the rotation of the engaging claws 40a, 40b on the driving part 40 according to a predetermined track.

As shown in FIG. 25 , it is a schematic view of the structure of the process cartridge 1 fully installed in the image forming apparatus 1000. At this time, the driving part 40 in the driving assembly 4 is engaged with the protrusion 1002, specifically, the engaging claws 40c, 40d on the driving part 40 Engage with drive pins 1002b, 1002c on the protrusion 1002, respectively.

Preferably, the Oldham coupling is arranged in the drive assembly 4 to allow the process cartridge 1 to be pulled out from the image forming device, and the drive part 40 and the protrusion 1002 can have a buffering process, which is later than the process cartridge frame and the protrusion 1002. The guide rail 1003d is out of the abutting state, which is more conducive to the detachment of the driving part 40 . Furthermore, the sliding surface between the groove 43e and the protrusion 42a has a certain inclination to the axis of the driving part, so that the driving part 40 can have a larger stroke in the axial direction during the process of axial translation, which is more conducive to driving The detachment of the part 40 from the protrusion 1002 in the image forming apparatus.

Embodiment Four

As shown in Figures 26 and 27, a partial schematic view of another image forming apparatus is provided. Embodiment 4 and Embodiment 3 include the same image forming apparatus 1000 and the same process cartridge frame; the difference is that this embodiment provides The driving assembly in the process box is the driving assembly in the second embodiment; specifically, the self-adaptive adjustment part is the protruding tooth 140b provided on the side wall of the driving part 140, and the protruding tooth 140b can also be matched with the step surface 1003c on the guide rail 1003. The state of the engaging claw is adjusted; and a ratchet mechanism for adjusting the one-way rotation of the driving part is also arranged in the driving assembly. After the process cartridge is completely installed in the image forming apparatus, the engaging pawl 140a at the end of the driving assembly can also be well engaged with the driving pin on the protrusion 1002; and it has the same beneficial effect as the fifth embodiment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it still The technical solutions described in the foregoing embodiments can be modified, or some or all of the technical features can be equivalently replaced, for example, the drive assembly can also drive other rotating elements in the process box, such as developing elements or stirring elements; and these modifications Or replacement does not make the essence of the corresponding technical solution depart from the scope of the technical solution protected by the present invention.

Claims (31)

1. A process box is removably installed in an image forming device, and a protrusion is provided in the image forming device, and the process box includes a process box frame and a drive assembly arranged at one end near the process box frame, and the drive assembly includes A driving part, the end of the driving part is provided with an engaging part engaged with the protrusion of the image forming device for power transmission; the driving assembly also includes a sleeve, and the driving part is arranged on the sleeve Inside, it is characterized in that: an adaptive adjustment part that adjusts the rotation of the drive part relative to the sleeve is also provided in the circumferential direction of the drive part, and the self-adaptive adjustment part is along a direction perpendicular to the axis of the drive part. direction extension. 2. The process cartridge according to claim 1, wherein the driving part includes a connecting post connected to the engaging part, and the self-adaptive adjusting part is disposed on the connecting post. 3. The process cartridge according to claim 2, wherein the self-adaptive adjusting portion is disposed on the outer surface of the connecting column and extends in a direction perpendicular to the axis of the driving portion. 4. The process cartridge according to claim 3, wherein the self-adaptive adjustment portion is a pair of protruding teeth extending along the outer surface of the connecting column, and is arranged symmetrically in the circumferential direction of the connecting column . 5. The process cartridge according to claim 4, characterized in that the distance from the outer surface of the portion of the connecting post where the protruding teeth are provided to the axis of the driving portion is greater than the portion of the connecting post that is not provided with protruding teeth The distance from the outer surface to the axis of the driving part. 6. The process cartridge according to claim 2, wherein the distance between the outer surface of the self-adaptive adjustment part and the axis of the driving part is greater than that of the outer surface of the connecting column where no self-adaptive adjustment part is provided The distance to the axis of the drive part. 7. The process cartridge according to claim 1, wherein at least a part of said driving portion is exposed outside said process cartridge frame. 8. The process cartridge according to any one of claims 2 to 7, wherein the engaging portion is an engaging claw protruding in an axial direction of the driving portion. 9. The process cartridge according to claim 8, wherein a pair of said engaging claws are symmetrically arranged at the end of said engaging part along the circumferential direction of said engaging part. 10. The process cartridge according to claim 9, wherein the pair of protruding teeth and the pair of engaging claws are arranged at 90° to each other in the circumferential direction of the driving portion. 11. The process cartridge according to claim 9, wherein a groove is provided on the driving part, and a pair of engaging pawls are arranged on a peripheral surface of the groove. 12. The process cartridge according to claim 1, wherein a guide rail for guiding the installation of the process cartridge is provided in the image forming device, and the self-adaptive adjustment is performed when the process cartridge is installed into the image forming device The part abuts against the guide rail and rotates the driving part relative to the sleeve. 13. The process cartridge according to claim 12, wherein when the self-adaptive adjustment part is in the installation direction of the process cartridge, the self-adaptive adjustment part does not abut against the guide rail and does not make the The drive part rotates; when the self-adaptive adjustment part is not in the installation direction of the process box, the self-adaptive adjustment part abuts against the guide rail during the process of process box installation, and makes the drive part relative to the The sleeve rotates. 14. The process cartridge according to claim 8, wherein a guide rail for guiding the installation of the process cartridge is provided in the image forming device, and when the process cartridge is installed into the image forming device, the protruding teeth and The guide rail abuts and rotates the drive portion relative to the sleeve. 15. The process cartridge according to claim 14, wherein when the protruding tooth is in the installation direction of the process cartridge, the protruding tooth does not abut against the guide rail, and does not make the driving part Rotation; when the protruding tooth is not in the installation direction of the process cartridge, the protruding tooth abuts against the guide rail during the process of installing the process cartridge, and makes the driving part rotate relative to the sleeve. 16. The process cartridge according to claim 8, wherein the driving assembly further comprises a coupling, the coupling is connected with the driving part, and the driving part is transmitted through the coupling power to the sleeve. 17. The process cartridge according to claim 16, wherein the coupling is an Oldham coupling, and the driving part can move radially relative to the sleeve when connected to the coupling. 18. The process cartridge according to claim 1, wherein the process cartridge further comprises a photosensitive drum, and the sleeve is fixedly connected with the photosensitive drum. 19. A drive assembly, comprising: a drive portion and a sleeve, the drive portion is disposed in the sleeve and transmits power to the sleeve, the drive portion includes an engaging portion for receiving power and a The connecting column connected by the engaging part is characterized in that: an adaptive adjustment part for adjusting the rotation of the driving part relative to the sleeve is provided on the outer surface of the connecting column, and the adaptive adjustment part is along with the The axis of the drive portion extends in a direction perpendicular to the axis. 20. The drive assembly according to claim 19, wherein the self-adaptive adjustment part is a pair of protruding teeth extending along the outer surface of the connecting column, and in the circumferential direction of the connecting column Symmetrical setting. 21. The driving assembly according to claim 20, characterized in that the distance from the outer surface of the portion of the connecting post where the protruding teeth are arranged to the axis of the driving part is greater than the portion of the connecting post that is not provided with protruding teeth The distance from the outer surface to the axis of the driving part. 22. The drive assembly according to claim 19, wherein the distance between the outer surface of the self-adaptive adjustment part and the axis of the driving part is greater than that of the outer surface of the connecting column where no self-adaptive adjustment part is provided The distance to the axis of the drive part. 23. The driving assembly according to any one of claims 19-22, wherein the engaging part is an engaging pawl, and the engaging pawl protrudes along the axial direction of the driving part. 24. The driving assembly according to claim 23, characterized in that: the engaging claws are a pair, symmetrically arranged at the end of the engaging part along the circumferential direction of the engaging part. 25. The driving assembly according to claim 24, wherein the pair of protruding teeth and the pair of engaging pawls are arranged at 90° to each other in the circumferential direction of the driving part. 26. The driving assembly according to claim 24, wherein a groove is provided on the driving part, and a pair of engaging pawls are arranged on a peripheral surface of the groove. 27. The drive assembly according to claim 23, wherein the drive assembly is detachably installed in a process cartridge, and the process cartridge is detachably installed in an image forming apparatus, the image A guide rail for guiding the installation of the process cartridge is provided in the forming device, and during the process of installing the process cartridge into the image forming device, the self-adaptive adjustment part abuts against the guide rail, and makes the driving part relative to the The sleeve rotates. 28. The drive assembly according to claim 27, wherein when the self-adaptive adjustment part is in the installation direction of the process cartridge, the self-adaptive adjustment part does not abut against the guide rail, and does not make the The driving part rotates; when the self-adaptive adjustment part is not in the installation direction of the process box, the self-adaptive adjustment part abuts against the guide rail during the process of installing the process box, and makes the drive part relative to the The sleeve rotates. 29. The driving assembly according to claim 23, characterized in that: the driving assembly further comprises a coupling, the coupling is connected with the driving part, and the driving part is transmitted through the coupling power to the sleeve. 30. The driving assembly according to claim 29, wherein the coupling is an Oldham coupling, and the driving part can move radially relative to the sleeve when connected to the coupling. 31. The driving assembly according to claim 27, wherein the process cartridge further comprises a photosensitive drum, the sleeve is fixedly connected to the photosensitive drum, and the photosensitive drum receives rotational power through the driving assembly.