CN108762016B - Rotational force transmitting assembly, roller and process cartridge - Google Patents
Rotational force transmitting assembly, roller and process cartridge Download PDFInfo
- Publication number
- CN108762016B CN108762016B CN201810943316.2A CN201810943316A CN108762016B CN 108762016 B CN108762016 B CN 108762016B CN 201810943316 A CN201810943316 A CN 201810943316A CN 108762016 B CN108762016 B CN 108762016B
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- receiving head
- ejector rod
- rotational force
- force receiving
- transmission gear
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 230000008569 process Effects 0.000 title claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 146
- 210000000078 claw Anatomy 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- 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
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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
- G03G21/1864—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 associated with a positioning function
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
- G03G2221/1657—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts transmitting mechanical drive power
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Ink Jet (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
The invention provides a rotational force transmitting assembly, a roller and a process cartridge. The inside of the transmission gear is provided with a containing cavity, and the inner wall of the containing cavity is provided with an input arm extending towards the radial center of the transmission gear. The rotating force receiving head is connected with the transmission gear, and the rotating force receiving head and the transmission gear are relatively fixed in the axial direction of the transmission gear. The ejector rod mechanism comprises an ejector rod and a reset component, the ejector rod is provided with a stress part, the stress part can extend out from the claw end of the rotating force receiving head, the stress part drives the ejector rod to move along the axial direction parallel to the rotating force receiving head under the action of external force, the rotating force transmission piece is connected with the ejector rod, the ejector rod drives the rotating force transmission piece to move between the joint position of the rotating force transmission piece and the input arm and the separation position of the rotating force transmission piece and the input arm, and the reset component drives the ejector rod to reset. The rotating force transmission assembly can improve the smoothness of the falling machine.
Description
Technical Field
The present invention relates to a process cartridge detachably mountable to an electrophotographic image forming apparatus, and a rotational force transmitting assembly and roller thereof.
Background
An electrophotographic image forming apparatus is an apparatus for forming an image on a printing medium such as paper using the electrophotographic principle, and includes a copying machine, a printer, a facsimile machine, an all-in-one machine, and the like, and generally includes a main body and a process cartridge detachably mounted in the main body. The processing box is provided with a rotating element and a rotating force transmission component for receiving the rotating driving force provided by a host machine such as a printer, the rotating element at least comprises one of a developing element, a photosensitive drum and a charging element, and after the processing box is mounted to the host machine, the rotating force transmission component is matched with a transmission shaft of the host machine and receives the rotating force provided by a driving mechanism, so that the rotating element is driven to rotate.
A process cartridge is disclosed in chinese patent publication No. CN102067042a, in which a rotational force transmitting assembly is now a ball-type universal joint. The ball-type universal joint is easy to separate from the gear or deviate from the direction, particularly during transportation, and in addition, the ball-type universal joint structure is difficult to be meshed with a transmission shaft of a host machine, so that the transmission function of the ball-type universal joint is lost or the operation is unstable. In order to enable the ball-type universal joint to be matched with the driving mechanism of the host machine, a torsion spring and a limiting piece are generally required to be arranged for positioning the ball-type universal joint, so that the number of parts is increased, and the structure of the processing box is complicated.
In addition, another conventional process cartridge has a telescopic function of a rotational force transmitting unit in which a driving force receiving head of the rotational force transmitting unit is reciprocally movable along an axis of a photosensitive drum, and when the rotational force receiving head is moved to a first position, the driving head is engaged with a driving shaft of a printer, and when the rotational force receiving head is moved to a second position, the driving head is disengaged from the driving shaft of the printer. However, such a coupling structure is complicated, and the process of coupling and uncoupling the drive head of the process cartridge to and from the drive shaft of the printer is not smooth enough.
Disclosure of Invention
The invention aims to provide a rotary force transmission assembly which can improve the smoothness of the falling machine, ensure that a rotary force transmission assembly of a processing box is accurately connected with a driving shaft of an imaging device, and simultaneously is easy to separate from the driving shaft.
It is another object of the present invention to provide a roller having the above rotational force transmitting assembly.
It is still another object of the present invention to provide a process cartridge having the above roller.
In order to achieve the above main object, the present invention provides a rotational force transmitting assembly including a transmission gear, a rotational force receiving head, a jack mechanism, and a rotational force transmitting member. The inside of the transmission gear is provided with a containing cavity, and the inner wall of the containing cavity is provided with an input arm extending towards the radial center of the transmission gear. The connection degree of the rotating force receiving head and the transmission gear is used for receiving the rotating driving force, and the rotating force receiving head and the transmission gear are relatively fixed in the axial direction of the transmission gear. The ejector rod mechanism comprises an ejector rod and a resetting component, wherein the ejector rod is provided with a force bearing part, the force bearing part can extend out from the claw end of the rotary force receiving head, and the force bearing part can drive the ejector rod to move along the axial direction parallel to the rotary force receiving head under the action of external force. The rotating force transmission piece is connected with the ejector rod, the ejector rod drives the rotating force transmission piece to move between a position where the rotating force transmission piece is connected with the input arm and a position where the rotating force transmission piece is separated from the input arm, and the reset part drives the ejector rod to reset.
According to the scheme, when the box packaging machine is processed, in an initial state, the rotary force transmission piece is separated from the input arm, the rotary force transmission piece can freely rotate in the circumferential direction relative to the transmission gear, the convex claw of the rotary force receiving head can rotate to avoid the convex claw to be in position smoothly after being abutted with the transmission shaft of the printer, then, the ejector rod is abutted with the transmission shaft of the printer, the ejector rod drives the rotary force transmission piece to move towards the side far away from the transmission shaft, and the rotary force transmission piece contacts with the input arm, so that the transmission gear is driven to rotate, and transmission of rotary driving force is realized. When the processing box is taken out of the printer, the ejector rod is separated from the transmission shaft, and moves towards the side close to the transmission shaft under the action of the reset component, the rotary force transmission piece is separated from the input arm and can freely rotate in the circumferential direction relative to the transmission gear, so that the convex claw of the rotary force receiving head is easily separated from the transmission shaft of the printer, and the processing box is smoothly taken out of the printer.
In a preferred embodiment, the rotational force transmitting member includes an output arm fixed to the jack and extending outwardly from a side wall of the jack in a radial direction of the jack. The side wall of the rotary force receiving head is provided with a guide opening extending along the axial direction parallel to the rotary force receiving head, and the output arm passes through the guide opening and can move along the extending direction of the guide opening.
It follows that both end portions of the guide opening serve to restrict the displacement of the output arm in the rotational force receiving head axial direction, ensuring that the output arm can be engaged with and disengaged from the input arm.
The rotating force transmission assembly further comprises an axial limiting piece, wherein the axial limiting piece comprises a limiting shaft, the limiting shaft is fixed on the rotating force receiving head and extends outwards from the side wall of the rotating force receiving head in the radial direction of the rotating force receiving head, and the limiting shaft is positioned outside the transmission gear and is adjacent to the end wall of the transmission gear.
It can be seen that the axial limiting element serves to ensure that the rotational force receiving head and the transmission gear are fixed relative to each other in the axial direction of the transmission gear.
The reset part is an elastic part, the elastic part is sleeved outside the rotating force receiving head, the first end of the elastic part is abutted on the output arm, and the second end of the elastic part is abutted on the end wall of the transmission gear.
Therefore, when the rotary force receiving head is separated from the transmission shaft of the printer, the elastic piece applies a force to the ejector rod to enable the ejector rod to return to the initial position, and at the moment, the output arm is separated from the input arm.
In one preferred scheme, the ejector rod is coaxially arranged with the rotating force receiving head, the rotating force transmitting pieces are hinged with the ejector rod, the number of the rotating force transmitting pieces is at least two, the rotating force transmitting pieces are symmetrically arranged by taking the axis of the ejector rod as the center, each rotating force transmitting piece comprises a connecting rod and an output arm which are mutually hinged, the connecting rods are obliquely arranged, the first ends of the connecting rods are hinged with the ejector rod, the second ends of the connecting rods are hinged with the output arms, the output arms can move on the end walls of the transmitting gears along the radial direction of the transmitting gears, and the output arms can be connected with or separated from the input arms.
Therefore, when the box packaging machine is processed, the ejector rod is abutted with the transmission shaft and then moves to the side far away from the transmission shaft, and the output arm moves to the direction close to the input arm along the radial direction of the transmission gear under the thrust action of the connecting rod and contacts with the input arm, so that the transmission gear is driven to rotate to realize the transmission of rotary driving force. When the processing box is taken out of the printer, the ejector rod is separated from the transmission shaft, and the ejector rod moves towards the side close to the transmission shaft under the action of the reset component, so that the connecting rod drives the output arm to move along the radial direction of the transmission gear towards the direction close to the axis of the transmission gear, the output arm is separated from the input arm, the rotating force transmission piece can freely rotate in the circumferential direction relative to the transmission gear, the separation of the claw of the rotating force receiving head and the transmission shaft of the printer is easy to realize, and the processing box is smoothly taken out of the printer.
The further scheme is that the fixed end of the rotating force receiving head is provided with a radial movable groove penetrating through the rotating force receiving head, and the connecting rod is positioned in the movable groove and can move in the movable groove.
Therefore, the movable groove can limit the movement direction of the connecting rod, and meanwhile, the transmission of driving force is convenient to realize.
Further scheme is, the rotating force transmission assembly still includes axial limiting part, and axial limiting part includes top cap and spacing arch, and the top cap is located the claw end that the transmission gear is close to the rotating force and receives the head, and spacing arch sets up on the inner wall that holds the chamber and extends towards the radial center of transmission gear, and the stiff end of rotating force receiving head is located between top cap and the spacing arch.
It follows that the provision of the cap and the limit projection prevents the rotational force transmitting assembly from moving relative to the transmitting gear in the axial direction of the transmitting gear.
In a preferred embodiment, the restoring member is an elastic member, a first end of the elastic member abuts against an end portion of the ejector rod, and a second end of the elastic member abuts against an end wall of the transmission gear.
Therefore, when the rotating force receiving head of the processing box is separated from the transmission shaft of the printer, the elastic piece provides acting force for the ejector rod, so that the rotating force transmitting piece connected with the ejector rod is separated from the input arm, and the processing box is smoothly taken out from the printer.
In order to achieve the above another object, the present invention provides a roller including a roller body and a rotational force transmitting assembly installed at one axial end of the roller body; the rotational force transmitting assembly is the rotational force transmitting assembly.
In order to achieve the above-mentioned still another object, the present invention provides a process cartridge comprising a cartridge body and a roller rotatably supported between both end walls of the cartridge body, the roller comprising a roller body and a rotational force transmitting assembly mounted at one axial end of the roller body; the rotational force transmitting assembly is the rotational force transmitting assembly.
The rotation force transmission assembly comprises a box body, a rotation force receiving head, a guide groove, a guide post, a spring ring and a rotating force receiving head, wherein the rotation force receiving head is clamped between the two torsion arms, the end parts of the two torsion arms extend into the guide groove, the side wall of the box body is provided with the guide post, and the spring ring is sleeved on the guide post.
Therefore, the rotary force receiving head is clamped between the two torsion arms, and the ends of the two torsion arms extend into the guide grooves, so that the control of the rotary angle of the rotary force receiving head is realized, and the rotary force receiving head can be smoothly engaged with the transmission shaft when the processing box is installed to the printer.
The further scheme is that a limiting ring is arranged at the position, close to the convex claw end, of the rotating force receiving head, the limiting ring is formed by a bulge extending outwards along the radial direction from the peripheral wall of the rotating force receiving head, and a torsion spring is arranged on one side, far away from the convex claw end, of the limiting ring and is adjacent to the limiting ring.
Therefore, the limiting ring and the torsion arm jointly act, so that the position of the rotary force receiving head can be limited in the axial direction of the transmission gear, and the rotary force receiving head is prevented from moving in the axial direction of the transmission gear, so that the function of the rotary force transmission assembly is affected.
Drawings
Fig. 1 is a block diagram of a first embodiment of a process cartridge of the present invention.
Fig. 2 is a partial enlarged view at a in fig. 1.
Fig. 3 is a structural view of a rotational force transmitting assembly in a first embodiment of the process cartridge of the present invention.
Fig. 4 is a cross-sectional view of a rotational force transmitting assembly in a first embodiment of the process cartridge of the present invention.
Fig. 5 is a structural exploded view of a rotational force transmitting assembly in a first embodiment of the process cartridge of the present invention.
Fig. 6 is a state diagram of the first embodiment of the process cartridge of the present invention after the rotational force transmitting assembly is engaged with the transmission shaft of the printer.
Fig. 7 is a structural exploded view of a rotational force transmitting assembly in a second embodiment of the process cartridge of the present invention.
Fig. 8 is a sectional view of a rotational force transmitting assembly in a second embodiment of the process cartridge of the present invention.
Fig. 9 is a structural view of a rotational force receiving head in a second embodiment of the process cartridge of the present invention.
Fig. 10 is a block diagram showing a first state in which a rotational force transmitting assembly is engaged with a transmission head of a printer in a second embodiment of a process cartridge of the present invention.
Fig. 11 is a structural view showing a second state in which the rotational force transmitting member is engaged with the transmission head of the printer in the second embodiment of the process cartridge of the present invention.
Fig. 12 is a structural view showing a third state in which the rotational force transmitting assembly is engaged with the transmission head of the printer in the second embodiment of the process cartridge of the present invention.
The invention is further described below with reference to the drawings and examples.
Detailed Description
Rotational force transmitting assembly, roller and process cartridge first embodiment
Referring to fig. 1, the process cartridge of the present embodiment includes a cartridge body 10 and a roller rotatably supported between both end walls of the cartridge body 10, the roller including a roller body and a rotational force transmitting assembly 1 mounted at one axial end of the roller body. The roller in this embodiment is a photosensitive drum, and in other embodiments the roller may be a developing roller, a toner feeding roller, or the like. The rotational force transmitting assembly 1 is adapted to be coupled to a transmission shaft 100 (shown in fig. 6) of a printer to receive rotational force and transmit the received rotational force to a drum and other rotating members.
Referring to fig. 2 to 4, the rotational force transmitting assembly 1 includes a transmitting gear 11, a rotational force receiving head 12, a jack mechanism 13, a rotational force transmitting member 14, a rotational angle restricting assembly 15, and an axial stopper.
As shown in fig. 3 to 5, the transmission gear 11 has a substantially cylindrical outer shape, and a helical gear 110 for transmitting the rotational force received by the transmission gear 11 to other rotating members is provided on the radially outer wall of the transmission gear 11. The transmission gear 11 is provided with a housing chamber 111 open at one axial end thereof, and an end wall 114 at the other axial end thereof is formed with a positioning hole 113 communicating with the housing chamber 111, and a pair of input arms 112 extending toward the radial center of the transmission gear 11 are provided on the inner wall of the housing chamber 111, the input arms 112 being located in the middle of the inner wall of the housing chamber 111 in the axial direction parallel to the transmission gear 11. The rotational force receiving head 12 is installed in the accommodation chamber 111, the rotational force receiving head 12 is for receiving a rotational driving force transmitted by the transmission shaft 100 of the printer, and the rotational force receiving head 12 and the transmission gear 11 are relatively fixed in an axial direction of the transmission gear 11.
The rotational force receiving head 12 includes a rod portion 123 and a claw 124 at one axial end of the rod portion 123. The rod 123 has a hollow structure, and the end of the rotary force receiving head 12 having the pawl 124 is a pawl end, and the end remote from the pawl 124 is a fixed end. The lever portion 123 has, in order from the claw end to the fixed end, a neck portion 1231, a stopper ring 1232, a clamped portion 1236, a cover portion 1233, a main body portion 1234, and a fixed portion 1235, the stopper ring 1232 and the cover portion 1233 each being constituted by a projection extending radially outwardly from the peripheral wall of the rotational force receiving head 12, the cover portion 1233 being close to the claw end and covering the open side of the transmission gear 11. The fixing portion 1235 passes through the positioning hole 113 and protrudes out of the transfer gear 11, and the diameter of the main body portion 1234 is greater than that of the fixing portion 1235.
The axial stopper includes a stopper shaft 161, the stopper shaft 161 penetrating and being fixed to the fixed portion 1235 of the rotational force receiving head 12, the stopper shaft 161 extending outwardly from the side wall of the rotational force receiving head 12 in the radial direction of the rotational force receiving head 12, the stopper shaft 161 being located outside the transmission gear 11 and the stopper shaft 161 being abutted with the outer surface of the end wall 114 of the transmission gear 11. Since the diameter of the main body portion 1234 of the rotational force receiving head 12 is larger than the diameter of the fixing portion 1235, a step is formed at the junction of the main body portion 1234 and the fixing portion 1235, which abuts against the inner surface of the end wall 114 of the transmission gear 11, and therefore the stopper shaft 161 cooperates with the step to restrict the displacement of the rotational force receiving head 12 in the axial direction of the transmission gear 11, so that the rotational force receiving head 12 is relatively fixed to the transmission gear 11 in the axial direction of the transmission gear 11.
Referring to fig. 5, the rotation angle limiting assembly 15 includes a torsion spring 151 and a bearing plate 152, the torsion spring 151 being located between the stop collar 1232 and the cover portion 1233 and abutting the stop collar 1232, the torsion spring including a coil and two torsion arms, the clamped portion 1236 of the rotational force receiving head 12 being clamped between the two torsion arms, and the distance between the two torsion arms being smaller than the diameter of the stop collar 1232. The bearing plate 152 is mounted on an end wall of the box body and is located at one side close to the rotary force transmission assembly 1, a guide groove 1521 is formed in the bearing plate 152, the end portions of two torsion arms of the torsion spring 151 extend into the guide groove 1521, the side wall 1522 and the side wall 1523 of the guide groove 1521 form limit positions of the torsion arms in the circumferential direction of rotation of the torsion arms, a positioning column 101 is arranged on the side wall of the box body 10, and the torsion spring is sleeved on the positioning column 101. Accordingly, the torsion spring 151 functions to limit the rotation angle of the rotation force receiving head 12.
The jack mechanism 13 includes a jack 131 and a restoring member, and in this embodiment, the jack 131, the rotational force receiving head 12, and the transmission gear 11 are coaxially disposed. In other embodiments, the ejector rod 131 may be disposed in parallel with the rotational force receiving head 12. The ejector rod 131 is inserted into the rod portion 123 of the rotary force receiving head 12, one end of the ejector rod 131 has a force receiving portion, and the force receiving portion can extend from the claw end of the rotary force receiving head 12, and after receiving the force (as indicated by an arrow F in fig. 4) applied by the transmission shaft 100 of the printer to the force receiving head along the axial direction parallel to the rotary force receiving head 12 and opposite to the claw end of the rotary force receiving head 12, the ejector rod 131 is driven to move along the axial direction of the rotary force receiving head 12 and the rotary force transmitting member 14 is driven to move between the position where the rotary force transmitting member 14 is engaged with the input arm 112 and the position where the rotary force transmitting member 14 is separated from the input arm 112. In the present embodiment, the position where the rotational force transmitting member 14 engages with the input arm 112 refers to a position where the projection of the rotational force transmitting member 14 on the axis of the jack 131 coincides with the projection of the input arm 112 on the axis of the jack 131; the position where the rotational force transmitting member 14 is separated from the input arm 112 refers to a position where a gap is provided between the projection of the rotational force transmitting member 14 on the axis of the jack 131 and the projection of the input arm 112 on the axis of the jack 131.
The rotational force transmitting member 14 includes an output arm 141, and the output arm 141 is fixed to the jack 131 and extends outward from a side wall of the jack 131 in a radial direction of the jack 131. The side wall of the rotary force receiving head 12 is provided with a guide opening 121 extending in parallel with the axial direction of the rotary force receiving head 12, and the output arm 141 passes through the guide opening 121 and is movable in the extending direction of the guide opening 121.
The reset component is used for driving the ejector rod 131 to reset after the transmission shaft 100 releases the acting force to the stress part of the ejector rod 131. The return member is an elastic member, preferably a spring 132. The spring 132 is sleeved outside the rotary force receiving head 12, a first end of the spring 132 abuts against the output arm 141, and a second end of the spring 132 abuts against the end wall 114 of the transmission gear 11.
Referring to fig. 6, the process of loading and unloading the process cartridge in the present embodiment is described below.
The loading process of the process cartridge includes the following steps.
After the process cartridge is first loaded into the printer, the ejector rod 131 moves to a side away from the transmission shaft 100, and at the same time, the ejector rod 131 drives the output arm 141 to move and applies an acting force to the spring 132, and the spring 132 is forced to compress.
Before the output arm 141 moves to the position where it engages with the input arm 112, the output arm 141 has a gap between the projection of the axis of the jack 131 and the projection of the input arm 112 on the axis of the jack 131, the rotational force receiving head 12 rotates freely in the circumferential direction with respect to the transmission gear 11, and the torsion spring 151 restricts the angle by which the rotational force receiving head 12 rotates in the circumferential direction, so that when the pawl 124 collides with the transmission shaft 100 of the printer, the rotational force receiving head 12 rotates by a certain angle to avoid, thereby enabling the rotational force receiving head 12 to engage with the transmission shaft 100 of the printer smoothly, ensuring the smoothness of the process cartridge dropping machine.
Then, the ejector rod 131 drives the output arm 141 to move to a position at which the output arm 141 is at the same height as the input arm 112, that is, a position where the output arm 141 is engaged with the input arm 112, and at this time, in the circumferential direction of the transmission gear 11, the output arm 141 is in abutting contact with the input arm 112 at the position of the input arm 112.
After the process cartridge is mounted to the printer, the rotational force receiving head 12 receives the rotational driving force transmitted from the transmission shaft 100 and transmits the received rotational driving force to the transmission gear 11 through the input arm 112, thereby driving the transmission gear 11 to rotate.
The process of taking out the process cartridge from the printer includes the following steps.
When the toner in the process cartridge is to be taken out from the printer after being printed, and the process cartridge is pulled out, since the ejector rod 131 is separated from the transmission shaft 100 of the printer, the ejector rod 131 is protruded from the end of the rotational force receiving head 12 in the axial direction of the rotational force receiving head 12 by the elastic restoring force of the spring 132, and simultaneously, the output arm 141 is separated from the input arm 112, the output arm 141 can idle inside the transmission gear 11, and when the process cartridge is to be pulled continuously, the rotational force receiving head 12 can freely rotate by a certain angle, and the torsion spring 151 restricts the angle by which the rotational force receiving head 12 rotates in the circumferential direction, so that the rotational force receiving head 12 of the process cartridge is completely separated from the transmission shaft 100 of the printer, and the process cartridge can be taken out smoothly.
Rotational force transmitting assembly, roller and process cartridge second embodiment
As a description of the second embodiment of the rotational force transmitting assembly of the present invention, only the differences from the first embodiment of the rotational force transmitting assembly described above will be described below. The second embodiment of the roller is a roller to which the second embodiment of the rotational force transmitting assembly is mounted, and the second embodiment of the process cartridge is a process cartridge to which the second embodiment of the roller is mounted.
Referring to fig. 7 to 9, the rotational force transmitting member 24 is hinged to the jack 231, the number of rotational force transmitting members 24 is two, the two rotational force transmitting members 24 are symmetrically disposed about the axis of the jack, the rotational force transmitting member 24 includes a link 241 and an output arm 242 hinged to each other, the link 241 is inclined, a first end of the link 241 is hinged to the jack 231, a second end of the link 241 is hinged to the output arm 242, the output arm 242 is movable on an end wall of the transmission gear 21 in a radial direction of the transmission gear 21, and the output arm 242 is engageable with or disengageable from the input arm 212. In this embodiment, the position where the output arm 242 is engaged with the input arm 212 refers to the position where the output arm 242 is located when the farthest distance from the axis of the top bar 231 on the output arm 242 is greater than the nearest distance from the axis of the top bar 231 on the input arm 212; the position where the output arm 242 is separated from the input arm 212 means a position where the output arm 242 is located when the farthest distance from the axis of the top bar 231 on the output arm 242 is less than or equal to the closest distance from the axis of the top bar 231 on the input arm 212.
The fixed end of the rotational force receiving head 22 is provided with a movable groove 221 penetrating the radial direction of the rotational force receiving head 22, and the link 241 is located in the movable groove 221 and movable in the movable groove 221.
The rotational force transmitting assembly further includes an axial stopper including a top cover 261 and a stopper projection 262, the top cover 261 being located on the open side of the transmitting gear 21, that is, on the claw end of the transmitting gear 21 near the rotational force receiving head 22. The housing cavity 211 is provided with a protruding strip (not shown) extending toward the radial center of the transmission gear 21 in parallel with the axial upper inner wall of the transmission gear 21, and the peripheral wall of the top cover 261 is provided with a locking groove 2611 matching with the protruding strip, and a locking groove matching is formed between the locking groove 2611 and the protruding strip, so that the top cover 261 is fixed on the transmission gear 21.
The stopper projection 262 is provided on the inner wall of the accommodation chamber 211 and extends toward the radial center of the transmission gear 21, the fixed end of the rotational force receiving head 22 has a fixing portion 222, the fixing portion 222 is located between the top cover 261 and the stopper projection 262, and the top cover 261 and the stopper projection 262 cooperate to restrict displacement of the rotational force receiving head 22 in the axial direction of the transmission gear 21, so that the rotational force receiving head 22 is relatively fixed with the transmission gear 21 in the axial direction of the transmission gear 21.
The closed side of the transfer gear 21 is provided with a bottom cover 214, and the bottom cover 214 may be integrally formed with the transfer gear 21 or may be formed separately from the transfer gear 21. A spring mounting groove 2141 is formed in a side wall of the bottom cover 214 near the accommodating cavity 211, a spring 232 serving as a reset member is located in the spring mounting groove 2141, a first end of the spring 232 abuts against an end portion of the push rod 231, and a second end of the spring 232 abuts against a bottom wall of the spring mounting groove 2414.
Referring to fig. 10 to 12, the loading and unloading processes of the process cartridge in the present embodiment are described below.
The loading process of the process cartridge includes the following steps.
First, after the process cartridge is loaded into the printer, the jack 231 moves to the side away from the transmission shaft 200, and applies a force to the spring 232, and the spring 232 is forced to compress. At the same time, the jack 231 drives the link 241 to rotate, thereby driving the output arm 242 to move toward the side close to the input arm 212 along the radial direction of the transfer gear 21.
Before the output arm 242 moves to the position where it engages with the input arm 212, the distance of the output arm 242 farthest from the axis of the jack 231 is less than or equal to the distance of the input arm 212 closest to the axis of the jack 231, the rotational force receiving head 22 freely rotates in the circumferential direction with respect to the transmission gear 21, and a torsion spring (not shown) restricts the angle of rotation of the rotational force receiving head 22 in the circumferential direction, so that when the pawl 224 collides with the transmission shaft 200 of the printer, the rotational force receiving head 22 rotates by a certain angle to avoid, thereby enabling the rotational force receiving head 22 to engage smoothly with the transmission shaft 200 of the printer, ensuring the smoothness of the process cartridge landing.
Then, the jack 231 drives the output arm 242 to move to a position where the output arm 242 is engaged with the input arm 212, and at this time, in the circumferential direction of the transmission gear 21, the output arm 242 is in abutting contact with the input arm 212 at the position of the input arm 212.
After the process cartridge is mounted to the printer, the rotational force receiving head 22 receives the rotational driving force transmitted from the transmission shaft 200 and transmits it to the transmission gear 21 through the input arm 212, thereby driving the transmission gear 21 to rotate.
The process of taking out the process cartridge from the printer includes the following steps.
When the toner in the process cartridge is to be taken out of the printer after printing, and the process cartridge is pulled out, since the jack 231 is separated from the transmission shaft 200 of the printer, the jack 231 is protruded from the end of the rotational force receiving head 22 in the axial direction of the rotational force receiving head 22 by the elastic restoring force of the spring 232, and the link 241 is rotated and drives the output arm 242 to move in the axial direction approaching the transmission gear 21 in the radial direction of the transmission gear 21. Then, the output arm 242 is separated from the input arm 212, the output arm 242 can idle inside the transfer gear 21, and when the process cartridge is pulled continuously, the rotational force receiving head 22 can be rotated freely by a certain angle, and the torsion spring restricts the angle by which the rotational force receiving head 22 rotates in the circumferential direction, so that the rotational force receiving head 22 of the process cartridge is completely disengaged from the transmission shaft 200 of the printer, so that the process cartridge can be taken out smoothly.
In addition, the ejector rod may be disposed outside the rotational force receiving head and substantially parallel to the axis of the driving force receiving head. The above-described modifications can also achieve the object of the present invention.
Finally, it should be emphasized that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, but rather that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the invention, and any modifications, equivalent substitutions, improvements, etc. are intended to be included within the scope of the present invention.
Claims (8)
1. The rotary force transmission subassembly, its characterized in that: comprising
The transmission gear is internally provided with a containing cavity, and the inner wall of the containing cavity is provided with an input arm extending towards the radial center of the transmission gear;
a rotational force receiving head connected to the transmission gear and configured to receive a rotational driving force, the rotational force receiving head and the transmission gear being relatively fixed in an axial direction of the transmission gear;
The ejector rod mechanism comprises an ejector rod and a reset part, the ejector rod is provided with a force bearing part, the force bearing part can extend out from the claw end of the rotary force receiving head, and the force bearing part drives the ejector rod to move along the axial direction parallel to the rotary force receiving head under the action of external force;
The rotating force transmission piece is connected with the ejector rod, the ejector rod drives the rotating force transmission piece to move between a position where the rotating force transmission piece is connected with the input arm and a position where the rotating force transmission piece is separated from the input arm, and the reset part drives the ejector rod to reset;
The ejector rod is coaxially arranged with the rotating force receiving head, the rotating force transmitting piece is hinged with the ejector rod, the rotating force transmitting piece comprises a connecting rod and an output arm which are mutually hinged, the connecting rod is obliquely arranged, a first end of the connecting rod is hinged with the ejector rod, a second end of the connecting rod is hinged with the output arm, the output arm can move on the end wall of the transmitting gear along the radial direction of the transmitting gear, and the output arm can be connected with or separated from the input arm.
2. A rotational force transfer assembly according to claim 1, wherein:
The fixed end of the rotating force receiving head is provided with a radial movable groove penetrating through the rotating force receiving head, and the connecting rod is positioned in the movable groove and can move in the movable groove.
3. A rotational force transfer assembly according to claim 1, wherein:
The rotary force transmission assembly further comprises an axial limiting part, the axial limiting part comprises a top cover and a limiting protrusion, the top cover is located at the position, close to the claw end of the rotary force receiving head, of the transmission gear, the limiting protrusion is arranged on the inner wall of the containing cavity and extends towards the radial center of the transmission gear, and the fixed end of the rotary force receiving head is located between the top cover and the limiting protrusion.
4. A rotational force transfer assembly according to any one of claims 1 to 3, wherein:
the reset component is an elastic component, the first end of the elastic component is abutted to the end part of the ejector rod, and the second end of the elastic component is abutted to the end wall of the transmission gear.
5. A roller including a roller body and a rotational force transmitting assembly mounted at one axial end of the roller body;
The method is characterized in that:
The rotational force transmitting assembly is the rotational force transmitting assembly according to any one of claims 1 to 4.
6. A process cartridge including a cartridge body, a roller rotatably supported between both end walls of the cartridge body, the roller including a roller body and a rotational force transmitting assembly mounted at one axial end of the roller body;
The method is characterized in that:
The rotational force transmitting assembly is the rotational force transmitting assembly according to any one of claims 1 to 4.
7. A process cartridge according to claim 6, wherein:
The rotary force transmission assembly further comprises a rotation angle limiting assembly, the rotation angle limiting assembly comprises a torsion spring and a bearing plate, the bearing plate is installed on the box body and is close to one side of the rotary force transmission assembly, a guide groove is formed in the bearing plate, the torsion spring comprises a spring coil and two torsion arms, the rotary force receiving head is clamped between the two torsion arms, the ends of the two torsion arms extend into the guide groove, a positioning column is arranged on the side wall of the box body, and the spring coil is sleeved on the positioning column.
8. A process cartridge according to claim 7, wherein:
The rotary force receiving head is provided with a limiting ring at a position close to the convex claw end, the limiting ring is formed by a protrusion extending outwards along the radial direction from the peripheral wall of the rotary force receiving head, the torsion spring is arranged at one side of the limiting ring away from the convex claw end, and the torsion spring is adjacent to the limiting ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810943316.2A CN108762016B (en) | 2018-08-17 | 2018-08-17 | Rotational force transmitting assembly, roller and process cartridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810943316.2A CN108762016B (en) | 2018-08-17 | 2018-08-17 | Rotational force transmitting assembly, roller and process cartridge |
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| CN108762016A CN108762016A (en) | 2018-11-06 |
| CN108762016B true CN108762016B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810943316.2A Active CN108762016B (en) | 2018-08-17 | 2018-08-17 | Rotational force transmitting assembly, roller and process cartridge |
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| CN108762016A (en) | 2018-11-06 |
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