CN106610575B - Power coupling device and processing box - Google Patents
Power coupling device and processing box Download PDFInfo
- Publication number
- CN106610575B CN106610575B CN201510819607.7A CN201510819607A CN106610575B CN 106610575 B CN106610575 B CN 106610575B CN 201510819607 A CN201510819607 A CN 201510819607A CN 106610575 B CN106610575 B CN 106610575B
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- Prior art keywords
- rotation axis
- guide surface
- power
- side edge
- guide groove
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
- G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
- G03G21/1839—Means for handling the process cartridge in the apparatus body
- G03G21/1842—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
- G03G15/757—Drive mechanisms for photosensitive medium, e.g. gears
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
- G03G21/1839—Means for handling the process cartridge in the apparatus body
- G03G21/1857—Means for handling the process cartridge in the apparatus body for transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms
- G03G21/186—Axial couplings
Abstract
The present invention relates to a power coupling device and a process cartridge having the same, the coupling device including a driving unit and a driven unit coupled to each other, the driving unit including a power output member having a rotation axis L1, the driven unit including a power receiving member having a rotation axis L2, the power output member including a drive shaft, and a guide groove on the drive shaft, the guide groove having a side edge portion; the power receiving member includes a driven shaft, and an extending portion extending from one longitudinal end of the driven shaft in a direction away from the driven shaft, the extending portion being integrally opposed to the side edge portion without contacting the power output shaft when the driving unit and the driven unit are coupled to each other, so that the process cartridge using the driven unit of the present invention can be smoothly mounted in and removed from the electrophotographic image forming apparatus having the driving unit.
Description
Technical Field
The invention relates to the field of electrophotography, in particular to a power coupling device and a processing box.
Background
Currently, office equipment is commonly used, for example: a laser printer, a copier, and the like are called an electrophotographic image forming apparatus, and generally, a process cartridge for image formation is mounted in the electrophotographic image forming apparatus, and in order to complete an image forming process, not only a power transmission process between the process cartridge and the electrophotographic image forming apparatus but also a power transmission process inside the electrophotographic image forming apparatus exist, that is, in the process of completing image formation in the electrophotographic image forming apparatus, a plurality of power coupling means will be operated in the entire electrophotographic image forming apparatus including the process cartridge.
As described above, since the process cartridge needs to be additionally installed in the electrophotographic image forming apparatus and also needs to be smoothly taken out at any time after the electrophotographic image forming apparatus stops operating, the structure of the power coupling device between the process cartridge and the electrophotographic image forming apparatus is more complicated than the power coupling device inside the electrophotographic image forming apparatus.
It is known that an electrophotographic image forming process requires at least a photosensitive member, and a developing device, a charging device, and a cleaning device which function with the photosensitive member. Generally, electrophotographic image forming apparatus manufacturers integrally assemble a photosensitive member and process means such as a developing means, a charging means, and a cleaning means, which function with the photosensitive member, in a process cartridge; or at least one of the charging device and the cleaning device is previously assembled integrally with the photosensitive member in the electrophotographic image forming apparatus, and the developing device is separately assembled in the process cartridge. In the above-described first process cartridge, the power receiving member for receiving power is generally provided at one end of the photosensitive element, and in the above-described second process cartridge, the power receiving member is generally provided at one end of the developing device.
In the prior art, the power receiving member of the above two kinds of process cartridges is combined with the power output member of the electrophotographic image forming apparatus to form a power coupling device, which is generally three kinds, respectively:
the first type of power receiving member is a driving gear, i.e., a driving gear provided at one end of the photosensitive member/developing device, which is combined with a power output gear in an electrophotographic image forming apparatus to receive a driving force, however, this way has a drawback that the rotation of the photosensitive drum is not uniform;
the second type of power receiving member is a device having a twisted triangular projection, and in an electrophotographic image forming apparatus, a groove is correspondingly provided to be engaged with the twisted triangular projection, and the groove is horizontally moved by opening and closing a cover door of the electrophotographic image forming apparatus, so that engagement and disengagement of the projection and the groove are achieved, and although this way, it is possible to ensure uniform rotation of the photosensitive member/developing device along its axis, it is necessary to provide a mechanism in the electrophotographic image forming apparatus to ensure that the groove can be horizontally moved along the rotation axis of the photosensitive member/developing device when the cover door is opened and closed;
the third power receiving element is a device having a universal joint structure, and a power output element is correspondingly provided in the electrophotographic image forming apparatus, by providing one end of such a power receiving element in a spherical shape and providing a mechanism for receiving the spherical shape at a corresponding position of the photosensitive element/developing device, the power receiving element can be arbitrarily swung in a radial direction of the photosensitive element/developing device, thereby achieving coupling and decoupling of the power receiving element and the power output element, and the electrophotographic image forming apparatus employing such a power receiving element does not need to be provided with a mechanism for horizontally moving the power output element along a rotational axis of the photosensitive element/developing device.
Disclosure of Invention
Although the conventional three types of power coupling devices have been gradually improved in terms of power transmission efficiency and power transmission stability, there is still room for improvement in terms of ensuring smooth mounting or removal of a process cartridge to which such a power coupling device component is mounted, in view of the structure of the third type of power coupling device which is currently popular.
The invention provides a power coupling device, a processing box adopting the power coupling device can be smoothly installed in an electronic photographic imaging device and also can be smoothly taken out of the electronic photographic imaging device.
The invention discloses a power coupling device, which adopts the following technical scheme:
a power coupling device comprising a driving unit and a driven unit which are couplable to and decouplable from each other, the driving unit including at least a power take-off having a rotation axis L1, the power take-off including a drive shaft having a cylindrical shape as a whole, a taper portion at one end of the drive shaft, a power take-off rod extending radially outward of the drive shaft, a drive shaft end face at a free end of the taper portion, and a guide groove extending on the drive shaft parallel to the rotation axis L1 in a direction away from the end face, the guide groove being provided adjacent to the power take-off rod; the guide groove includes a bottom surface coaxial with the drive shaft, a guide groove opening, a guide groove rear end surface, and side edge portions located at both ends of the bottom surface in the circumferential direction of the drive shaft, the guide groove opening and the guide groove rear end surface being disposed opposite to each other in the direction of the rotation axis L1; the driven unit includes a power receiving element having a rotation axis L2, the power receiving element including at least a driven shaft, and an extending portion extending from one longitudinal end of the driven shaft in a direction away from the driven shaft along the rotation axis L2, the extending portion being integrally opposed to the side edge portion when the driving unit is coupled with the driven unit.
The side edge part comprises a first side edge part and a second side edge part, wherein the first side edge part is arranged on the same side as the power output rod, the second side edge part is opposite to the power output rod, and when the driving unit is coupled with the driven unit, the extending part is integrally opposite to the first side edge part.
The guide groove extends beyond the power take-off lever along the axis of rotation L1; alternatively, the guide groove rear end surface is located on the same side of the drive shaft distal end surface as the power output rod along the rotation axis L1, and is located farther from the drive shaft distal end surface than the power output rod.
The first side edge part comprises a first guide surface and a second guide surface, the second side edge part comprises a third guide surface, the second guide surface and the third guide surface both extend from the bottom surface to a direction far away from the rotation axis L1 along the radial direction of the driving shaft, and the third guide surface extends to the outer peripheral surface of the driving shaft; the first guide surface extends from the top of the second guide surface farthest from the rotation axis L1 to the outer peripheral surface of the drive shaft; the first guide surface is a twisted surface and the second guide surface is not parallel to the rotation axis L1.
Along the rotation axis L1, from the opening of the guide groove, the distance between the first guide surface and the third guide surface gradually decreases, and the distance between the second guide surface and the third guide surface also gradually decreases; alternatively, the guide groove opening is gradually smaller in the direction from the drive shaft distal end face to the pto lever along the rotation axis L1.
The present invention also provides a process cartridge including a process cartridge housing and at least one of a photosensitive member and a developing device mounted in the process cartridge housing, the process cartridge further including a driven unit in the power coupling device as described above, the driven unit being mounted on at least one of the photosensitive member and the developing device.
As described above, when the driving unit and the driven unit in the power coupling device are coupled, the extension portion on the driven unit is opposite to the side edge portion, and power transmission is completed between the extension portion and the side edge portion, and the side edge portion does not interfere with engagement and disengagement of the extension portion, so that the process cartridge using the driven unit of the present invention can be smoothly mounted in and removed from the electrophotographic image forming apparatus having the driving unit.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a driving unit U1 in the power coupling device according to the present invention.
Fig. 2 is a schematic view of the overall structure of a power output member relating to the present invention.
Fig. 3A is a schematic overall structure diagram of a first embodiment of the driven unit according to the present invention.
Fig. 3B is a schematic overall structure diagram of a second embodiment of the driven unit according to the present invention.
Fig. 3C is a schematic view of the overall structure of the third embodiment of the driven unit according to the present invention.
Fig. 4A is a schematic diagram illustrating a state in which the driving unit U1 is not coupled to the driven unit U2 in the power coupling device according to the present invention.
Fig. 4B is a schematic diagram illustrating a state in which the driving unit U1 is coupled to the driven unit U2 in the power coupling device according to the embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, wherein the power coupling device of the present invention is adapted for coupling between a process cartridge and an electrophotographic image forming apparatus, and includes a driving unit and a driven unit that are coupled to and separated from each other; the process cartridge includes a process cartridge housing, and at least one of a photosensitive member and a developing device mounted in the process cartridge housing, the driven unit may be mounted on at least one of the photosensitive member and the developing device, and accordingly, the driving unit is mounted in the electrophotographic image forming apparatus.
[ overall Structure of active Unit ]
Fig. 1 is a schematic diagram showing an overall structure of a driving unit U1 in the power coupling device according to the present invention, and fig. 2 is a schematic diagram showing an overall structure of a power output member according to the present invention. The driving unit U1 includes at least a power take-off 1, and the power take-off 1 is coupled to a power receiving element (described in detail below) and serves to transfer power to the power receiving element, and the power receiving element may shake when the power receiving element (described in detail below) is ready to be coupled to the power take-off 1, and thus, the driving unit U1 further includes a bracket 2 for supporting the power receiving element.
As shown in fig. 1 and 2, the pto member 1 has a rotation axis L1, and includes a drive shaft 11 having a generally cylindrical shape, a tapered portion 12 at one end of the drive shaft, a pto lever 13 extending radially outward of the drive shaft, a drive shaft end face 14 at a free end of the tapered portion, and a guide groove 15 extending on the drive shaft parallel to the rotation axis L1 in a direction away from the end face. The guide groove 15 is provided adjacent to the power take-off rod 13, the power take-off rod 13 is located on the drive shaft near the end where the tapered portion 12 is located, and the guide groove 15 extends beyond the power take-off rod 13 along the rotation axis L1, that is, in the direction of the rotation axis L1, a rear end surface 155 (described later) of the guide groove 15 is located on the same side of the drive shaft distal end surface 14 as the power take-off rod 13, and the rear end surface 155 is located farther from the drive shaft distal end surface 14 than the power take-off rod 13; in the present embodiment, the two power output rods 13 are preferably provided at positions diametrically opposite to the drive shaft 11.
As shown in fig. 2, the guide groove 15 includes a curved surface 150 coaxial with the drive shaft 11, a guide groove opening 154, a guide groove rear end surface 155, and side edge portions located at both ends of the curved surface 150 in the circumferential direction of the drive shaft 11, respectively, the guide groove opening 154 and the guide groove rear end surface 155 being disposed opposite to each other in the direction of the rotation axis L1. As described above, the guide groove 15 is provided adjacent to the power take-off rod 13, and therefore, the side edge portion includes the first side edge portion 15a on the same side as the power take-off rod 13 and the second side edge portion 15b opposite to the power take-off rod 13; the first side portion 15a includes a first guide surface 151 and a second guide surface 152 connected to each other, the first guide surface 151 and the second guide surface 153 each extending from the tapered portion 12 to the pto lever 13, and the second side portion 15b includes a third guide surface 153, the third guide surface 153 extending from the tapered portion 12 to a guide groove rear end surface 155.
In the embodiment of the present invention, the curved surface 150 is defined as the bottom surface of the guiding groove 15; the second guide surface 152 and the third guide surface 153 both extend from the bottom surface 150 in the radial direction of the drive shaft in a direction away from the rotation axis L1, and the second guide surface 152 is not parallel to the rotation axis L1, and the third guide surface 153 is parallel to the rotation axis L1. As shown, the third guide surface 153 extends to the outer circumferential surface of the driving shaft 11, and the second guide surface 152 extends for a distance less than the distance that the third guide surface 153 extends; the first guide surface 151 extends from the top of the second guide surface 152 farthest from the rotation axis L1 to the outer peripheral surface of the drive shaft 11, and the first guide surface 151 is a twisted surface.
As described above, the first guide surface 151 is a twisted surface, the second guide surface 152 is not parallel to the rotation axis L1, and the direction in which the first guide surface 151 is twisted and the direction in which the second guide surface 152 is inclined with respect to the rotation axis L1 can be described as: the distance between the first guide surface 151 and the third guide surface 153 becomes gradually smaller from the drive shaft distal end surface 14 along the rotation axis L1, and the distance between the second guide surface 152 and the third guide surface 153 also becomes gradually smaller, in other words, the guide groove opening 154 becomes gradually smaller in the direction from the drive shaft distal end surface 14 to the pto lever 13 along the rotation axis L1. As shown in fig. 1, the lengths of the first guide surface 151 and the second guide surface 152 in the direction of the rotation axis L1 are d1 and d2, respectively, and satisfy: d1 < d 2.
The support 2 is described below in connection with fig. 1.
As shown in fig. 1, the carrier 2 includes a carrier body 20, a projection 21 projecting from the carrier body, a pushing face 23 on the projection and facing the pto 1, a pushing groove 22 on the tip of the projection and opposite to the rotation axis L1, and a carrier top face 24 adjacent to the pushing face 23 and opposite to at least the pto rod 13. The protrusion 21 protrudes from the holder body 20 in a direction close to the rotation axis L1, and the distance between the holder top surface 24 and the outer peripheral surface of the drive shaft 11 is slightly larger than the length of the power output rod 13 protruding outward from the drive shaft 11, preferably, the power output rod 13 does not interfere with the holder top surface 24 when rotating through the holder top surface 24, so that a space S1 is formed between the urging surface 23 and the drive shaft distal end surface 14, a space S2 is formed between the holder top surface 24 and the drive shaft 11, and when the power output member 1 rotates about the axis L1, the power output rod 13 can enter the space S2 and pass through the space S2 without obstruction.
[ integral Structure of first embodiment of driven Unit ]
Fig. 3A is an overall structural schematic diagram of a first embodiment of a driven unit according to the present invention, the driven unit U2 is coupled with a driving unit U1, the driven unit includes a power receiving part 3 having a rotation axis L2, as shown, the power receiving part 3 includes at least a driven shaft 30 and an extending part 32 extending along the rotation axis L2 from one longitudinal end of the driven shaft to a direction away from the driven shaft, the rotation axis L2 is parallel to the rotation axis L1, and the rotation axis L1 is coaxial with the rotation axis L2 when the driving unit and the driven unit are coupled with each other. Generally, in order to make the extension portion 32 more stable, the power receiving part 3 further includes a support base 31 connected to one longitudinal end of the driven shaft, in which case the extension portion 32 extends from the support base 31.
As shown in fig. 3A, the support platform 31 is generally conical, and a side away from the driven shaft 30 along the rotation axis L2 is a plane 311, i.e. a support surface on which the root of the extension portion 32 is located is a plane, so that the support platform 32 is a circle along a cross-section perpendicular to the rotation axis L2, and in the embodiment of the present invention, the two extension portions 32 are preferably located at positions opposite to the support platform in the radial direction.
The extension 32 comprises a power receiving face 321, a top face 322, and an envelope face 320 adjacent to both the power receiving face 321 and the top face 322; the top surface 322 is disposed adjacent to the power receiving surface 321, the intersection line of the two is f, the length of the power receiving surface 321 in the direction of the rotation axis L2 is d3, and the following conditions are satisfied: d3 < d 2; as shown, the power receiving surface 321 and the supporting surface 311 are perpendicular to each other, that is, the power receiving surface 321 is parallel to the rotation axis L2; the top surface 322 is also a plane surface, located at one longitudinal end of the power receiving element 3, and parallel to the supporting surface 311, that is, the top surface 322 is not only perpendicular to the power receiving surface 321, but also perpendicular to the rotation axis L2, therefore, the extension 32 also has a length d3 extending in the direction of the rotation axis L2; the envelope surface 320 is a curved surface and is parallel to the rotation axis L2, that is, the envelope surface 320 is not only perpendicular to the power receiving surface 321, but also perpendicular to the top surface 322 and also perpendicular to the supporting surface 311; of course, the shape of each part of the extension portion 32 is not limited to this, for example, the top surface 322 may be designed as an inclined surface or a curved surface or a tapered surface, etc., as required.
[ coupling of Driving Unit and driven Unit ]
Fig. 4A is a schematic diagram illustrating a state where the driving unit U1 is not coupled to the driven unit U2 in the power coupling apparatus according to the present invention; fig. 4B is a schematic diagram illustrating a state in which the driving unit U1 is coupled to the driven unit U2 in the power coupling device according to the embodiment of the present invention.
As shown in fig. 4A, when the driven unit U2 is ready to be coupled with the driving unit U1, the driven shaft 30 of the power receiving part 3 is located right above the pushing groove 22, but the two are not in contact, and if the driven shaft 30 shakes due to vibration or other external factors, the pushing groove 22 can play a role of supporting the driven shaft 30, thereby ensuring accurate positioning of the driven shaft 30.
The power receiver 3 is reciprocatable along the rotation axis L2 when acted upon by an external force, and during this movement the rotation axis L2 of the power receiver 3 is always kept coaxial with the rotation axis L1 of the power output element 1, i.e. the power receiver 3 moves forward in the x-direction and backward in the y-direction in fig. 4A, which are parallel to the rotation axis L2 of the power receiver 3. When the power receiving element 3 moves forward in the x direction, the power receiving element 3 will be coupled with the power output element 1; when the power receiving element 3 is moved backwards in the y-direction, the power receiving element 3 will be decoupled from the power output element 1. When the power receiver 3 is in the position shown in fig. 4A, i.e., when the driven unit U2 is ready to be coupled to the driving unit U1, the rotation axis L2 of the power receiver 3 is coaxial with the rotation axis L1 of the power output element 1, the power receiver 3 is moved in the x direction to the position shown in fig. 4B by an external force, as shown in fig. 4B, the driving shaft distal end face 14 is in contact with the support face 311, the extension portion 32 enters the guide groove 15, the power receiving face 321 is opposite to the first side edge portion 15a, the guide groove bottom face 150 is enveloped by the enveloping face 320, and the power receiver 3 completes the coupling with the power output element 1, at which time, the rotation axis L2 of the power receiver 3 is also coaxial with the rotation axis L1 of the power output element 1.
As described above, since the first guide surface 151 in the first side portion 15a is a twisted surface and the second guide surface 152 is inclined with respect to the rotation axis L1, the portion of the extension portion 32 located closest to the first side portion 15a in the position shown in fig. 4B is the intersection line f of the top surface 322 and the power receiving surface 321. When the power take-off 1 is rotated in the direction R in fig. 4B, the extension 32 will contact the first side edge portion 15a, which in this embodiment is the intersection f, and the power take-off 1 transmits power to the power take-off 3.
Due to the above-mentioned relationship of d3 < d2, after the power receiver 3 has been coupled to the pto 1, the extension top surface 322 does not reach the pto lever 13 as viewed in a direction perpendicular to the rotation axis L2/L1, i.e., the extension 32 does not overlap the pto lever 13, in other words, the extension top surface 322 is closer to the drive shaft distal end surface 14 than the pto lever 13 in a direction along the rotation axis L2/L1, or there is a gap between the extension top surface 322 and the pto lever 13 in a direction along the rotation axis L2/L1, and at this time, the extension 32 as a whole is opposed to the first side edge portion 15a and also to the second side edge portion 15 b.
As described above, since the intersection line f is in contact with the first side portion 15a, there is a possibility that the intersection line f will contact the first guide surface 151 and also contact the second guide surface 152, and the first possibility is: when the impact force of the pto 1 on the extension portion 32 at the moment of starting rotation is large, the intersecting line f will contact the first guide surface 151, and at this time, the extension portion 32 is in point contact with the pto 1, more specifically, the extension portion 32 is in point contact with the twisted surface 151; when the impact force of the pto 1 on the extension portion 32 at the moment of starting rotation is small, the intersecting line f will contact the second guide surface 151, and at this time, the extension portion 32 and the pto 1 are in line contact, more specifically, the extension portion 32 and the second guide surface 152 are in line contact; the second possible scenario is: when the shortest distance between the intersection line f and the first guide surface 151 is greater than the longest distance between the intersection line f and the second guide surface 152 after the power receiving element 3 and the power output element 1 are coupled, the first guide surface 151 will contact the intersection line f regardless of the impact force on the extension portion 32 when the power output element 1 starts to rotate, and at this time, the extension portion 32 and the first guide surface 151 are still in point contact.
[ overall Structure of second embodiment of driven Unit ]
Fig. 3B is a schematic overall structure diagram of a second embodiment of the driven unit according to the present invention, as shown in the drawing, the driven unit U2 in this embodiment is still the power receiving element 3, and the structure of the power receiving element 3 in this embodiment is substantially the same as that in the above embodiment, except that a plane fa is formed between the top surface 322 of the extending portion and the power receiving surface 321, and the plane fa is inclined with respect to the rotation axis L2; when the power receiving element 3 in this embodiment is completely coupled to the power output element 1, the plane fa is opposed to the first side edge portion 15a, and at this time, the inclination direction of the plane fa with respect to the rotation axis L2 is the same as the inclination direction of the second guide surface 152 with respect to the rotation axis L2 and also the twist direction of the first guide surface 151.
As shown in fig. 3A and 3B, the plane fa may be formed by: on the basis of the extension 32 of the first embodiment, a plane formed by obliquely cutting the power receiving face 321 in the direction of the extension top face 322 along the rotation axis L2 is included in the cut portion as shown by the broken line in fig. 3A, and therefore, new intersection lines fa1 and fa2 are formed between the plane fa and the extension top face 322 and the power receiving face 321, respectively.
Likewise, depending on the change in the inclination angle of the plane fa with respect to the rotation axis L2, the plane fa and the first side edge portion 15a may form: surface contact between the plane fa and the second guide surface 152, point contact between the plane fa and the first guide surface 151, line contact between the new intersection line fa1 or fa2 and the second guide surface 152, point contact between the new intersection line fa1 or fa2 and the first guide surface 151.
[ overall Structure of third embodiment of driven Unit ]
Fig. 3C is an overall structural schematic diagram of a third embodiment of the driven unit according to the present invention, and as shown in the drawing, the driven unit U2 in this embodiment is still the power receiving element 3, and the structure of the power receiving element 3 in this embodiment is substantially the same as that in the first embodiment, except that the extended portion top surface 322 in this embodiment is formed with a protrusion on the power receiving surface 321 in the circumferential direction of the driven shaft 30, and thus another plane fb is formed between the extended portion top surface 322 and the power receiving surface 321, and an intersection fb1 is formed between the plane fb and the extended portion top surface 322, and when the power receiving element 3 in this embodiment is coupled to the power output element 1, the intersection fb1 is closest to the first side edge portion 15 a.
Like the first embodiment, the power receiving element 3 and the power output element 1 in the present embodiment may form therebetween: a line contact between the intersecting line fb1 and the first guide surface 151, and a point contact between the intersecting line fb1 and the second guide surface 152.
As described above, the driven unit U2 (power receiver 3) of the power coupling device according to the present invention reciprocates along the rotation axis L2 thereof by an external force, and the power receiver 3 is disposed in the space S1 before being coupled to the power output member 1, and when the power receiver 3 is completely coupled to the power output member 1, the extended portion 32 is opposed to the side portion without contacting the power output rod 13, and therefore, the power output rod 13 does not interfere with the movement of the extended portion 32, and the process cartridge using the driven unit according to the present invention can be smoothly mounted in and removed from the electrophotographic image forming apparatus having the driving unit.
Claims (5)
1. A power coupling device comprising a driving unit and a driven unit which are couplable to and decouplable from each other, the driving unit comprising at least a power take-off having a rotation axis L1,
the power output member includes a drive shaft having a generally cylindrical shape, a tapered portion at one end of the drive shaft, a drive shaft end face at a free end of the tapered portion, and a guide groove extending on the drive shaft from the end face in a direction away from the end face in parallel with the rotation axis L1, the guide groove being disposed adjacent to the power output shaft, the guide groove extending beyond the power output shaft along the rotation axis L1;
the guide groove comprises a bottom surface coaxial with the driving shaft, a guide groove opening, a guide groove rear end surface and side edge parts which are respectively positioned at two ends of the bottom surface along the circumferential direction of the driving shaft, and the guide groove opening and the guide groove rear end surface are oppositely arranged in the direction of a rotation axis L1;
the side edge part comprises a first side edge part and a second side edge part, the first side edge part and the second side edge part are on the same side of the power output rod, the second side edge part is opposite to the power output rod, the first side edge part comprises a first guide surface and a second guide surface which are connected with each other, the second side edge part comprises a third guide surface, the first guide surface and the second guide surface both extend from the conical part to the power output rod, and the third guide surface extends from the conical part to the rear end face of the guide groove; the second guide surface and the third guide surface each extend in the radial direction of the drive shaft from the bottom surface in a direction away from the rotation axis L1, the third guide surface extending up to the outer peripheral surface of the drive shaft; the first guide surface extends from the top of the second guide surface farthest from the rotation axis L1 to the outer peripheral surface of the drive shaft;
the driven unit includes a power receiving element having a rotation axis L2, the power receiving element including at least a driven shaft, and an extending portion extending from one longitudinal end of the driven shaft in a direction away from the driven shaft along the rotation axis L2,
it is characterized in that the preparation method is characterized in that,
when the driving unit is coupled with the driven unit, the extending part is integrally opposite to the first side edge part.
2. A power coupling device according to claim 1, wherein the first guide surface is a twisted surface and the second guide surface is non-parallel to the axis of rotation L1.
3. A power coupling device according to claim 2, wherein the distance between the first guide surface and the third guide surface is gradually reduced from the opening of the guide groove along the rotation axis L1, and the distance between the second guide surface and the third guide surface is also gradually reduced.
4. A power coupling device according to claim 3, wherein the guide groove opening is tapered in a direction from the drive shaft end face to the power take-off lever along the rotation axis L1.
5. A process cartridge comprising a process cartridge housing and at least one of a photosensitive member and a developing device mounted in the process cartridge housing, wherein the process cartridge further comprises a driven unit in the power coupling device as claimed in any one of claims 1 to 4, the driven unit being mounted on at least one of the photosensitive member and the developing device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015208371245 | 2015-10-26 | ||
| CN201520837124 | 2015-10-26 |
Publications (2)
| Publication Number | Publication Date |
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| CN106610575A CN106610575A (en) | 2017-05-03 |
| CN106610575B true CN106610575B (en) | 2020-02-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510819607.7A Active CN106610575B (en) | 2015-10-26 | 2015-11-23 | Power coupling device and processing box |
| CN201520943903.3U Active CN205229681U (en) | 2015-10-26 | 2015-11-23 | Power coupling device and processing box |
| CN201510822730.4A Active CN106610576B (en) | 2015-10-26 | 2015-11-23 | A kind of driven unit and handle box |
| CN201610020604.1A Pending CN106610573A (en) | 2015-10-26 | 2016-01-13 | Power receiving element |
| CN201620030280.5U Expired - Fee Related CN205539942U (en) | 2015-10-26 | 2016-01-13 | Piece is received to power |
| CN201610066222.2A Pending CN106610577A (en) | 2015-10-26 | 2016-01-29 | Process cartridge |
Family Applications After (5)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520943903.3U Active CN205229681U (en) | 2015-10-26 | 2015-11-23 | Power coupling device and processing box |
| CN201510822730.4A Active CN106610576B (en) | 2015-10-26 | 2015-11-23 | A kind of driven unit and handle box |
| CN201610020604.1A Pending CN106610573A (en) | 2015-10-26 | 2016-01-13 | Power receiving element |
| CN201620030280.5U Expired - Fee Related CN205539942U (en) | 2015-10-26 | 2016-01-13 | Piece is received to power |
| CN201610066222.2A Pending CN106610577A (en) | 2015-10-26 | 2016-01-29 | Process cartridge |
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| CN (6) | CN106610575B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106610575B (en) * | 2015-10-26 | 2020-02-21 | 中山诚威科技有限公司 | Power coupling device and processing box |
| WO2019105353A1 (en) * | 2017-11-30 | 2019-06-06 | 江西亿铂电子科技有限公司 | Process cartridge |
| CN108563104B (en) * | 2018-01-27 | 2019-11-15 | 中山诚威科技有限公司 | Power transmission and handle box |
| CN108388097A (en) * | 2018-05-14 | 2018-08-10 | 珠海大琴信息科技有限公司 | A kind of handle box |
| CN208537916U (en) * | 2018-08-06 | 2019-02-22 | 中山市迪迈打印科技有限公司 | Power transmission and handle box |
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| JP4498407B2 (en) * | 2006-12-22 | 2010-07-07 | キヤノン株式会社 | Process cartridge, electrophotographic image forming apparatus, and electrophotographic photosensitive drum unit |
| JP5306050B2 (en) * | 2008-06-20 | 2013-10-02 | キヤノン株式会社 | Cartridge, coupling member attaching method, and coupling member removing method |
| US8270877B2 (en) * | 2009-04-28 | 2012-09-18 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
| CN103399479B (en) * | 2013-08-26 | 2016-05-25 | 珠海天威飞马打印耗材有限公司 | Handle box |
| CN203732884U (en) * | 2014-03-10 | 2014-07-23 | 珠海天威飞马打印耗材有限公司 | Driving component, roller and processing box |
| CN103885306B (en) * | 2014-03-10 | 2017-01-11 | 珠海天威飞马打印耗材有限公司 | Driving assembly, roller and processing box |
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- 2015-11-23 CN CN201520943903.3U patent/CN205229681U/en active Active
- 2015-11-23 CN CN201510822730.4A patent/CN106610576B/en active Active
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2016
- 2016-01-13 CN CN201610020604.1A patent/CN106610573A/en active Pending
- 2016-01-13 CN CN201620030280.5U patent/CN205539942U/en not_active Expired - Fee Related
- 2016-01-29 CN CN201610066222.2A patent/CN106610577A/en active Pending
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| CN104267589A (en) * | 2014-10-09 | 2015-01-07 | 中山鑫威打印耗材有限公司 | Power receiver and device with power receiver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106610576A (en) | 2017-05-03 |
| CN106610576B (en) | 2019-08-09 |
| CN205229681U (en) | 2016-05-11 |
| CN106610573A (en) | 2017-05-03 |
| CN205539942U (en) | 2016-08-31 |
| CN106610575A (en) | 2017-05-03 |
| CN106610577A (en) | 2017-05-03 |
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