CN110488582B - Counting mechanism and developing box - Google Patents
Counting mechanism and developing box Download PDFInfo
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- CN110488582B CN110488582B CN201910902914.XA CN201910902914A CN110488582B CN 110488582 B CN110488582 B CN 110488582B CN 201910902914 A CN201910902914 A CN 201910902914A CN 110488582 B CN110488582 B CN 110488582B
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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
- G03G15/55—Self-diagnostics; Malfunction or lifetime display
- G03G15/553—Monitoring or warning means for exhaustion or lifetime end of consumables, e.g. indication of insufficient copy sheet quantity for a job
- G03G15/556—Monitoring or warning means for exhaustion or lifetime end of consumables, e.g. indication of insufficient copy sheet quantity for a job for toner consumption, e.g. pixel counting, toner coverage detection or toner density measurement
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Abstract
The invention relates to a counting mechanism and a developing box, wherein the counting mechanism comprises a counting piece, an intermediate piece, a power receiving piece and a separating component, the counting piece is used for being combined with and separated from an external counted piece, the intermediate piece is positioned between the counting piece and the power receiving piece and combined with the counting piece and the power receiving piece, and the power receiving piece is also combined with the separating component and used for receiving driving force from the outside to drive the counting piece to rotate; before the counting is completed, the power receiving part can receive the external driving force, and after the counting is completed, the separating component enables the power receiving part to not receive the external driving force any more.
Description
Technical Field
The present invention relates to the field of electrophotographic image forming, and more particularly, to a developing cartridge detachably mountable in an electrophotographic image forming apparatus and a counting mechanism mounted in the developing cartridge.
Background
At present in the electrophotographic imaging field, laser printing is common office mode, for reducing end user's use cost, has printer manufacturer separately set up the drum subassembly that forms the electrostatic latent image in the printer and the development box that holds the developer to with the life design of drum subassembly longer, after the developer in the development box finishes using, end user only need change corresponding development box can.
In order to inform the end user that the service life of the developing box is about to be finished, each manufacturer considers that the developing box is provided with a developing box service life detection device, wherein one mode is a mode of counting by adopting a counting gear so as to calculate the service life of the developing box.
Fig. 1A is a schematic view of a state before counting of a counting mechanism of a conventional developing cartridge; fig. 1B and 1C are schematic views of a state of a counting process of a counting mechanism of a conventional developing cartridge; fig. 1D is a schematic view of a state after counting by the counting mechanism of the conventional developing cartridge.
As shown in the figure, the developing cartridge is provided with a sensor gear 70 and an agitator driving gear 69, the sensor gear 70 is provided with a main sensor gear portion 79, a contact protrusion 82 extending from the sensor gear 70 and a protrusion 84 extending from the contact protrusion 82, the main sensor gear portion 79 includes a toothed portion 80 and a tooth-missing portion 81; the contact protrusion 82 rotates with the rotation of the sensor gear 70 and contacts a corresponding portion of the printer; the agitator drive gear 69 is provided with external teeth 77 on its circumference, and the sensor gear 70 is driven to rotate when the external teeth 77 mesh with the toothed portions 80, and the drive of the sensor gear 70 is interrupted when the external teeth 77 mesh with the tooth-lacking portions 81.
An information detecting mechanism 89 for cooperating with the sensor gear 70 and counting the number of developing cartridges is correspondingly provided in the printer, and as shown in the figure, the information detecting mechanism 89 includes an actuator 91 and an optical sensor 92 which cooperate with each other, a rotating portion 94 of the actuator 91 is rotatable around a rotating shaft 93, the actuator 91 includes a contact pawl portion 95 and a light blocking portion 96 which are respectively located at opposite sides of the rotating shaft 93, and at the same time, the actuator 91 further includes a stopper 99, a tension spring 97, and a fixing block 98 which fixes the tension spring 97, the actuator 91 is configured to contact with a stopper contact portion 100 which is fixedly provided in the printer and to limit a rotation angle of the actuator 91, and the tension spring 97 is configured to reset the actuator 91.
As shown in fig. 1B and 1C, when the sensor gear 70 is driven by the external teeth 77 to rotate in the direction indicated by C (shown in fig. 1D), the protrusion 84 comes into contact with the contact pawl portion 95 and forces the actuator 91 to rotate in the direction indicated by B in fig. 1B, and thus the light blocking portion 96 no longer blocks the optical sensor 92, and the optical sensor 92 can receive light; as shown in fig. 1C, when the protrusion 84 is out of contact with the contact pawl 95, the actuator 91 will be reset in the direction D in fig. 1C by the tension spring 97, and the light blocking portion 96 will return to the position blocking the optical sensor 92, so that the optical sensor 92 will not receive light; thereafter, the sensor gear 70 continues to be driven by the external teeth 77 to rotate in the direction indicated by C, and when the tooth-missing portion 81 is opposite to the external teeth 77, the sensor gear 77 will not be driven to rotate any more, as shown in fig. 1D.
As shown in fig. 1D, after the counting mechanism finishes counting, although the external teeth 77 are no longer meshed with the sensor gear 70, the two are still close to each other, and a knock phenomenon inevitably occurs during transportation of the developing cartridge, at this time, the external teeth 77 collide with the sensor gear 70, and in the process, the external teeth 77 or the sensor gear 70 may be broken.
Disclosure of Invention
The invention provides a counting mechanism and a developing box, wherein after the counting mechanism finishes counting, a gear for receiving driving force in the counting mechanism is isolated from a driving gear, so that the gear fracture of the developing box in the transportation process can be effectively prevented.
In order to achieve the purpose, the invention adopts the following technical scheme:
a counting mechanism including a counting member for being engaged with and disengaged from an external counted member, an intermediate member interposed between and engaged with the counting member and the power receiving member, and a separating assembly coupled with the power receiving member and receiving a driving force from the outside to drive the counting member to rotate; before the counting is completed, the power receiving part can receive the external driving force, and after the counting is completed, the separating component enables the power receiving part to not receive the external driving force any more.
After counting is complete, the position of at least a portion of the separator assembly is translated relative to the position prior to counting being complete.
The separating assembly comprises a separating piece and a translation assembly, wherein the separating piece is combined with the power receiving piece, after counting is completed, the translation assembly enables the separating piece to translate, and the power receiving piece translates along with translation of the separating piece.
The developing cartridge provided by the invention is characterized by comprising a shell and the counting mechanism, wherein the counting mechanism is arranged at the longitudinal tail end of the shell.
The separating component is also combined with the shell and comprises a separating piece and a translation component which are combined with each other, wherein the separating piece is combined with the power receiving piece, and after counting is completed, the translation component enables the separating piece to translate.
The translation assembly comprises a translation groove and a support member which are combined with each other, the translation groove is arranged on one of the separating member and the shell, and the support member is arranged on the other of the separating member and the shell.
The translation grooves comprise a first translation groove and a second translation groove which are communicated with each other, the supporting piece is a supporting column which is formed by protruding from the shell, and the supporting column can support the separating piece to rotate in the first translation groove and the second translation groove respectively.
The separation assembly further comprises at least one spanning portion disposed on the inner wall of the translational tank, the spanning portion being a protrusion protruding inwardly from the inner wall of the translational tank.
As described above, in the counting mechanism in the developing cartridge according to the present invention, the counting member and the separating member are not coaxial after the counting is completed, but since the counting member is movable by the end cap regulating portion, the separating member is deviated from the initial position, so that the member for receiving the driving force in the counting mechanism is isolated from the driving gear.
Drawings
Fig. 1A is a schematic view of a state before counting of a counting mechanism of a conventional developing cartridge.
Fig. 1B and 1C are schematic views of the state of the counting process of the counting mechanism of the conventional developing cartridge.
Fig. 1D is a schematic view of a state after counting by the counting mechanism of the conventional developing cartridge.
Fig. 2 is a schematic view of the entire structure of the developing cartridge according to the present invention as viewed from the driving end.
Fig. 3 is a schematic view of the overall structure of the developing cartridge according to the present invention as viewed from the conductive end.
Fig. 4 is a schematic view of the entire structure of the developing cartridge according to the present invention as viewed from the front end.
Fig. 5 is a schematic view of the entire structure of the developing cartridge according to the present invention, as viewed from the driving end, with the end cap removed.
Fig. 6 is an exploded schematic view of a counting mechanism in the developing cartridge according to the present invention.
Fig. 7A is a schematic view of the overall structure of the counter according to the present invention.
Fig. 7B is a schematic view of the internal structure of the counting member according to the present invention.
Fig. 8A is a schematic structural view of an intermediate member according to the present invention.
Fig. 8B is a side view of an intermediate member according to the present invention.
Fig. 9A is an overall structural schematic diagram of the power receiving element according to the present invention.
Fig. 9B is a schematic structural view of the power receiving element according to the present invention, viewed from another angle.
Fig. 10A is a schematic view of the overall structure of the separator according to the present invention.
Fig. 10B is a schematic view of the separating member according to the present invention viewed from another angle.
Fig. 10C is a side view of a separator according to the present invention.
Fig. 11A is a schematic view of the counting mechanism according to the present invention before counting and the state of the drive gear.
Fig. 11B is a sectional view taken along the rotation axis of the counting mechanism in fig. 11A.
Fig. 11C is a relative positional relationship diagram of the separating member and the drive gear in the counter mechanism according to the present invention before counting.
Fig. 12A is a schematic view of the state of the drive gear and the counting mechanism according to the present invention just before the counting is completed.
Fig. 12B is a sectional view taken along the rotation axis of the counting mechanism in fig. 12A.
Fig. 12C is a diagram showing the relative positional relationship between the separating member and the drive gear immediately before the counting is completed in the counting mechanism according to the present invention.
Fig. 13A is a schematic view of the counting mechanism according to the present invention in a state of driving the gears after the counting is completed.
Fig. 13B is an enlarged schematic view of a portion R1 in fig. 13A.
Fig. 13C is a sectional view of the counting mechanism of fig. 13A taken along the rotation axis.
Fig. 13D is an enlarged schematic view of a portion R2 in fig. 13C.
Fig. 13E is a diagram showing a relative positional relationship between the separating member and the drive gear after the completion of counting in the counter mechanism according to the present invention.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings; for a more clear description of the embodiments of the invention, the following definitions are made before the start of the description: the length direction of the developing cartridge is defined as a longitudinal direction X, the width direction of the developing cartridge is defined as a transverse direction Y, and the height direction of the developing cartridge is defined as a vertical direction Z.
[ integral Structure of developing Cartridge ]
Fig. 2 is a schematic view of the entire structure of the developing cartridge according to the present invention as viewed from the driving end; fig. 3 is a schematic view of the overall structure of the developing cartridge relating to the present invention as viewed from the conductive end; fig. 4 is a schematic view of the entire structure of the developing cartridge according to the present invention as viewed from the front end.
As shown in the drawing, the developing cartridge P includes a housing 10, a conductive end E and a driving end F at both ends of the housing in the longitudinal direction, respectively, a handle 15 and a developing member 11 (shown in fig. 4) mounted on the housing, and defines: the direction from the driving end F to the conductive end E is + X direction, the direction from the handle to the developing member 11 is + Y direction, and the + Y direction is the front end and the-Y direction is the rear end, and therefore, the developing member 11 is located at the front end of the handle 15.
As shown in fig. 2, the developing cartridge P further includes a power input member 20, a counting mechanism 30 and an end cap F1 provided at a longitudinal end of the casing, the power input member 20 and the counting mechanism 30 each protruding through the end cap F1, the power input member 20 being configured to receive a driving force from the outside and transmit it to the counting mechanism 30, the counting mechanism 30 being configured to cooperate with an information detecting mechanism in the printer to count the developing cartridges P; as shown in fig. 3, the conductive terminal E includes a conductive member E1, and the conductive member E1 is for receiving power from the outside and supplying to the developing cartridge P.
Fig. 5 is a schematic view of the entire structure of the developing cartridge according to the present invention, as viewed from the driving end, with the end cap removed.
After receiving the driving force from the outside, the power input element 20 transmits the driving force through the power transmission gear 201 coaxially arranged with the power input element 20, as shown in fig. 5, the developing cartridge P further includes a developing element gear 111, a powder feeding element gear 121, an agitating element gear 131 and a driving gear 141 arranged on the same side as the power transmission gear 201, wherein the developing element gear 111, the powder feeding element gear 121 and the agitating element gear 131 are all meshed with the power transmission gear 201, the driving gear 141 is meshed with the agitating element gear 131, and meanwhile, the driving gear 141 further transmits the driving force to the counting mechanism 30; in the embodiment of the invention, the developing part gear 111, the powder feeding part gear 121, the stirring part gear 131, the driving gear 141 and the counting mechanism 30 are all arranged on the side surface 100 of the driving end of the developing box P; the driving gear 141 includes a first gear 141a, a second gear 141b, and a contact portion 141c, which are coupled to each other, the first gear 141a receiving the driving force by being engaged with the stirring member gear 131, the second gear 141b being coupled to the counting mechanism 30, the contact portion 141c being coupled to at least one of the first gear 141a and the second gear 141b, and preferably, the contact portion 141c is located between the first gear 141a and the second gear 141b, and the contact portion 141c is opposite to the counting mechanism 30.
[ counting mechanism ]
Fig. 6 is an exploded schematic view of a counting mechanism in the developing cartridge according to the present invention; FIG. 7A is a schematic view showing the overall structure of a counting member according to the present invention; FIG. 7B is a schematic view showing the internal structure of the counting member according to the present invention; FIG. 8A is a schematic structural view of an intermediate member according to the present invention; FIG. 8B is a side view of an intermediate member according to the present invention; fig. 9A is an overall structural schematic view of a power receiving element according to the present invention; FIG. 9B is a schematic view of the power receiver of the present invention viewed from another angle; FIG. 10A is a schematic view of the overall construction of a separator according to the present invention; FIG. 10B is a schematic view of the separator of the present invention from another angle; fig. 10C is a side view of a separator according to the present invention.
As shown in fig. 6, the counting mechanism 30 includes a counting member 31, an intermediate member 32, a power receiving member 33, and a separating assembly 300, wherein the counting member 31 and the power receiving member 33 are combined with the intermediate member 32, and the separating assembly 300 is combined with the power receiving member 33 and the case 10, respectively; the counter element 31 has a rotation axis L1, the power receiving element 33 has a rotation axis L3; in the embodiment of the present invention, the separating assembly 300 includes a separating member 34 and a translating assembly MC coupled to each other, the separating member 34 is coupled to the power receiving member 33, the translating assembly MC is coupled to the casing 10, and the separating member 34 has a rotation axis L4 and is opposite to the contact portion 141 c. The counting piece 31 is used for matching with an information detection mechanism in the printer to realize a counting function; the middle piece 32 is used for connecting the counting piece 31 and the power receiving piece 33, and the relative movement between the power receiving piece 33 and the middle piece 32 is realized; the power receiving part 33 is used for being combined with the driving gear 141, receiving the driving force of the driving gear 141 and driving the counting part 31 to rotate; the separation assembly 300 is used to disengage the power receiving part 33 from the driving gear 141 after the counting member 31 finishes counting, thereby stopping the rotation of the counting member 31.
The counting mechanism 30 has a first position before counting, in which the counting member 31 is coaxial with the separating member 34, and a second position after counting is completed; in the second position, the counter element 31 is not coaxial with the separating element 34; meanwhile, in the second position, the power receiving member 33 is disengaged from the driving gear 141, and accordingly, the separating member 34 is further away from the driving gear 141.
The structure of each component of the counting mechanism 30 will be described in detail below with reference to fig. 7A, 7B, 8A, 8B, 9A, 9B, 10A, 10B, and 10C.
FIG. 7A is a schematic view showing the overall structure of a counting member according to the present invention; FIG. 7B is a schematic view showing the internal structure of the counting member according to the present invention; FIG. 8A is a schematic structural view of an intermediate member according to the present invention; FIG. 8B is a side view of an intermediate member according to the present invention; fig. 9A is an overall structural schematic view of a power receiving element according to the present invention; FIG. 9B is a schematic view of the power receiver of the present invention viewed from another angle; FIG. 10A is a schematic view of the overall construction of a separator according to the present invention; FIG. 10B is a schematic view of the separator of the present invention from another angle; fig. 10C is a side view of a separator according to the present invention.
As shown in the figure, the counting member 31 has an overall cylindrical shape, and includes a cylindrical body 310, a counting protrusion 311 protruding from the cylindrical body 310, and a first engaging portion 315 disposed in the cylindrical cavity; the intermediate piece 32 includes an intermediate piece body 320 and first bonded portions 321 respectively located on both side surfaces of the intermediate piece body 320; the power receiving member 33 is a gear body 330, and includes a tooth 331 provided on an outer circumference of the gear body 330 and a second coupling portion 332 located inside the gear body 330, the tooth 331 is full-tooth, and at the same time, a third coupling portion 334 having a coupling hole 335 for coupling with the separating assembly 300 is further provided on a side opposite to the second coupling portion 332; the separating member 34 includes a base plate 340, and a cam 341 and a second coupled portion 342 coupled to both side surfaces of the base plate 340, respectively, the second coupled portion 342 being coupled to the power receiving member 33 through a coupling hole 335, and thus, the second coupled portion 342 has a shape matching the coupling hole 335; the translating assembly MC includes a translating groove 344 and a supporting member 35 combined with each other, wherein the translating groove 344 is located on one of the separating member 34 and the casing 10, and the supporting member 35 is located on the other of the separating member 34 and the casing 10, that is, the translating groove 344 is located on the separating member 34 and the supporting member 35 is located on the casing 10, or the translating groove 344 is located on the casing 10 and the supporting member 35 is located on the separating member 34, and it is preferable that the translating groove 344 is located on the separating member 34 and the supporting member 35 is located on the casing 10 according to the structure of the developing cartridge P.
When the counting mechanism 30 is assembled, the first combining portion 315 and the second combining portion 332 are combined with the first combined portion 321, and the second combined portion 342 is combined with the combining hole 335 of the third combining portion 334. Specifically, the first combining portion 315 and the second combining portion 332 are sliding grooves, the first combined portion 321 is a combining protrusion, and the combining protrusion 321 can slide in the sliding groove 315/332, so that the counter element 31 and the power receiving element 33 can move relatively.
As shown in fig. 10B and 10C, a protruding column 343 is provided on the separating member 34 to protrude on the same side as the cam 341, a translational groove 344 is provided in the protruding column 343, the protruding column 343 is surrounded by the cam 341 as a whole, the translational groove 344 includes a first translational groove 344a and a second translational groove 344B communicating with each other, the supporting member 35 is a supporting column protruding from the housing 10, the supporting member 35 is rotatable in the first translational groove 344a and the second translational groove 344B respectively when the supporting member 35 is provided in the translational groove 344, the rotating axis of the separating member 34 is L4a when the supporting member 35 is rotated in the first translational groove 344a, and the rotating axis of the supporting member 35 is L4B when the supporting member 34 is rotated in the second translational groove 344B, wherein the rotating axes L4a and L4B are parallel to each other; preferably, the base plate 340 is a circular plate, and the rotation axis L4a is collinear with the rotation axis L4 of the separator 34.
To maintain stable rotation of the support post 35 within the first translation slot 344a or the second translation slot 344b, and prevents the support post 35 from being freely moved between the first and second translational slots 344a and 344b, the detachment assembly 300 further includes at least one spanning portion 345, as shown in fig. 10B, the spanning part 345 is provided on an inner wall of the translation groove 344, and preferably, the spanning part 345 is a protrusion protruding inward from the inner wall of the translation groove 344, between the first translation groove 344a and the second translation groove 344B, and there are two crossing portions 345 which are disposed opposite to each other, so that, as shown in fig. 10C, when the separating member 34 is viewed from the direction opposite to the direction in which the stud 343 projects, the first and second translational grooves 344a and 344b are in the shape of "C", respectively having the centers of rotation M and N, and the two spanning portions 345 are in the up-down positional relationship, with a distance h therebetween. Of course, the spanning part 345 may also be a protrusion formed from the bottom plate 340, which protrudes in the translation groove 344, preferably, in the same direction as the protruding direction of the stud 343; as long as the spanning part 345 is formed to maintain the stable rotation of the support column 35 within the first translation groove 344a or the second translation groove 344 b.
As shown in fig. 10C, the cam 341 is fixedly coupled to the base plate 340, and preferably, the cam 341 is integrally formed with the base plate 340. The cam 341 includes a first arc portion 341a and a second arc portion 341b connected to each other, wherein the first arc portion 341a has at least one radius, and the radius of the second arc portion 341b is constant; the center of rotation of the separator 34 is O when the separator 34 is viewed from the direction opposite to the direction in which the stud 343 projects, and the centers of rotation M and O coincide when the rotation axis L4a is collinear with the rotation axis L4 of the separator 34; with M as the center, the maximum radius of the first arc portion 341a is r1, and the radius of the second arc portion 341b is r2, which satisfy the following conditions: r1 < r 2.
As shown in fig. 10C, the two dividing points J and K of the first arc portion 341a and the second arc portion 341b are preferably, the connecting line JK of the two dividing points J and K is overlapped with or parallel to the connecting line MN of the rotation centers M and N, which helps to reduce the friction force when the supporting column 35 moves between the first translation groove 344a and the second translation groove 344b, and ensures the supporting column 35 to move smoothly.
In addition, the arc length of the first arc portion 341a depends on the angle of rotation of the counting member 31 from the start of counting to the completion of counting, and the two are positively correlated, that is, the greater the angle of rotation of the counting member 31 from the start of counting to the completion of counting, the longer the arc length of the first arc portion 341 a. Since the arc length of the first arc portion 341a is related to the angle of rotation of the counter 31 from the start of counting to the completion of counting, when the counting mechanism 30 is assembled, it is necessary to ensure that the first arc portion 341a and the counter 31 are located at a certain position, and to ensure that the position is unique, as shown in fig. 7A, 7B, 9A, 9B, and 10A, the counter 31 is provided with a positioning indicator 314, and the end cap F1 is further provided with a positioning confirmation portion F11 corresponding to the positioning indicator 314, so that when the counting mechanism 30 is assembled and the end cap F1 is finally assembled, it is possible to determine whether the assembly of the counting mechanism 30 is satisfactory or not by the positioning indicator 314 and the positioning confirmation portion F11; meanwhile, a first positioning part 313 is further arranged on the outer circumferential surface of the counting element 31, a second positioning part 333 is further arranged on the outer circumferential surface of the power receiving element 33, when the counting element is assembled, the first positioning part 313 corresponds to the second positioning part 333, specifically, the first positioning part 313 is a notch arranged on the outer circumferential surface of the counting element 31, the second positioning part 333 is a notch arranged on the outer circumferential surface of the power receiving element 33, specifically, the second positioning part 333 is a notch arranged on the outer circumferential surface of the gear body 330 or the outer circumferential surface of the tooth part 331, and therefore, the relative position relationship between the counting element 31 and the power receiving element 33 can be uniquely confirmed; the coupling hole 335 is a "T" shaped hole, and accordingly, the second coupled portion 342 is a "T" shaped protrusion protruding from the bottom plate 340, and when the second coupled portion 342 is coupled with the coupling hole 335, the position therebetween will be uniquely determined, and the separating member 34 will rotate with the rotation of the power receiving member 33, and thus, the relative positional relationship between the power receiving member 33 and the separating member 34 is also uniquely confirmed, and finally, the relative positional relationship between the counter 31 and the separating member 34 is uniquely confirmed.
[ counting procedure ]
FIG. 11C is a view showing the relative position of the separating member with respect to the driving gear before counting in the counting mechanism according to the present invention;
FIG. 12A is a schematic view of the counting mechanism of the present invention in a state immediately before the counting is completed and the driving gear is driven; FIG. 12B is a cross-sectional view taken along the axis of rotation of the counting mechanism in FIG. 12A; FIG. 12C is a view of the relative position of the disengaging assembly and the drive gear immediately prior to completion of counting in the counting mechanism of the present invention; FIG. 13A is a schematic view of the counting mechanism according to the present invention in a state of driving the gears after the counting is completed; FIG. 13B is an enlarged schematic view of section R1 of FIG. 13A; FIG. 13C is a cross-sectional view taken substantially along the axis of rotation of the counting mechanism of FIG. 13A; FIG. 13D is an enlarged schematic view of section R2 of FIG. 13C; fig. 13E is a diagram showing a relative positional relationship between the separating member and the drive gear after the completion of counting in the counter mechanism according to the present invention.
In the following description, only the counting mechanism 30 and the driving gear 141 are shown in the drawings for more clearly describing the movement process of each component in the counting mechanism 30 and the positional relationship between the counting mechanism 30 and the driving gear 141.
Before the counting mechanism 30 starts counting, as shown in fig. 11A and 11B, the second gear 141B is engaged with the tooth portion 331, and the contact portion 141c is opposed to the first arc portion 341A of the cam 341, but is not in contact therewith; at this time, the rotation axis L4 of the separating member 34 is the rotation axis L4a of the first translation groove 344a, and the rotation axis L1 of the counter member 31, the rotation axis L3 of the power receiving member 33 and the rotation axis L4a of the separating member 34 are collinear.
As shown in fig. 11C, the support column 35 has a diameter d satisfying d > h, and thus, the support column 35 does not move between the first and second translation grooves 344a and 344b when not applied with an external force. Before the counting mechanism 30 starts counting, the first arc portion 341a faces the contact portion 141c but does not contact the contact portion 141c, and at this time, a point of the cam 341 closest to the contact portion 141c is Q, and a distance between a rotation center M of the cam 341, that is, a rotation center O of the separator 34 and the closest point Q is LMQIn the present embodiment, the closest distance between the rotation center M and the contact portion 141c is r5, and the maximum radius r1 of the first arc portion 341a, the radius r2 of the second arc portion 341b and the r5 satisfy: r1 < r5 < r2, therefore, when the first arc portion 341a is opposed to the contact portion 141c, the cam 341 is not in contact with the contact portion 141c, and when the second arc portion 341b is opposed to the contact portion 141c, the cam 341 is in contact with the contact portion 141 c.
When the counting mechanism 30 is about to complete counting, as shown in fig. 12A, 12B and 12C, the second gear 141B and the tooth 331 are still engaged, and the contact portion 141C and the second arc 341B of the cam 341 are opposite to each other but come into contact with each other; at this time, the rotation axis L4 of the separating member 34 is the rotation axis L4a of the first translation groove 344a, and the rotation axis L1 of the counter member 31, the rotation axis L3 of the power receiving member 33 and the rotation axis L4a of the separating member 34 are collinear.
As shown in fig. 12C, the second arc portion 341b of the cam 341 is opposite to the contact portion 141C, the supporting column 35 is still located in the first translating groove 344a, theoretically, the second arc portion 341b and the contact portion 141C will form an overlapping portion U, and since a connecting line JK of two boundary points J and K of the first arc portion 341a and the second arc portion 341b is overlapped or parallel to a connecting line MN of the rotation centers M and N, a connecting line of the rotation center M of the first translating groove 344a and the rotation center S of the driving gear 141 will pass through the rotation center N of the second translating groove 344b and the overlapping portion U, and the cam 341 at this time is pressed by the contact portion 141C, and will tend to move in the direction indicated by V in fig. 12C.
As shown in fig. 13A, 13B, 13C and 13D, since the counting member 31 and the power receiving member 33 can move relatively, and the counting member 31 is blocked by the end cap F1 and cannot move, after the counting mechanism 30 finishes counting, the power receiving member 33 moves relative to the counting member 31 in a direction away from the driving gear 141, at this time, the second gear 141B is disengaged from the tooth portion 331, a first gap g1 is formed therebetween, and the rotation axis L1 of the counting member 31 is not collinear with the rotation axis L3 of the power receiving member 33, that is, the rotation axis L1 of the counting member 31 is not collinear with the rotation axis L4a of the first translation groove 344 a.
After the counting mechanism 30 finishes counting, the supporting column 35 moves from the first translation groove 344a to the second translation groove 344B, so that the rotation axis L4 of the separating member 34 is collinear with the rotation axis L4B of the second translation groove 344B, the rotation axis L4a is not collinear with the rotation axis L4B, and a second gap g2 is provided therebetween (as shown in fig. 13B and 13D), so that the rotation axis L1 of the counting member 31 is not collinear with the rotation axis L4 of the separating member 34 after the counting mechanism 30 finishes counting.
As shown in fig. 13E, after the counting mechanism 30 finishes counting, the supporting column 35 moves from the first translation groove 344a to the second translation groove 344b beyond the spanning portion 345, and at this time, the rotation center of the separating member 34 is the rotation center N of the second translation groove 344 b. Since the supporting post 35 is fixed to the housing, the position of the supporting post 35 with respect to the driving gear 141 is not changed, but the position of the separating member 34 with respect to the driving gear 141 is changed, specifically, the rotation center of the separating member 34 is moved from the rotation center M of the first translation groove 344a to the rotation center N of the second translation groove 344 b.
As shown in fig. 13E, after the counting mechanism 30 finishes counting, the closest point of the cam 341 to the contact portion 141c is T, and the distance between the rotation center N of the separator 34 and the closest point T is L at this timeNTSaid L isMQAnd LNTSatisfies the following conditions: l isMQ＞LN. The diameter d of the supporting beam 35 is larger than the distance h between the two spanning portions 345, so that, when the supporting beam 35 moves from the first translational groove 344a to the second translational groove 344b, the supporting beam 35 is confined in the second translational groove 344b without external force and does not return to the first translational groove 344a, the position of the release member 34 is fixedly maintained by the supporting beam 35, and therefore, the position of the power receiving member 33 coupled with the release member 34 is fixedly maintained, and the position between the tooth portion 331 of the power receiving member 33 and the second gear 141b is fixedly maintained.
In the embodiment of the present invention, in order to ensure that the second gear 141b is completely disengaged from the tooth 331, the first gap g1 and the distance that the supporting post 35 moves, i.e., the distance L between the rotation center M of the first translational slot 344a and the rotation center N of the second translational slot 344bMNSatisfies the following conditions: l isMN＞g1。
As described above, the counting mechanism 30 of the present invention has a first position before counting in which the counting member 31 is coaxial with the separating member 34 and a second position after counting is completed; in the second position, the counting member 31 is not coaxial with the separating member 34, i.e. in the first position the axis of rotation L1 of the counting member 31 is collinear with the axis of rotation L4 of the separating member 34, and in the second position the axis of rotation L1 of the counting member 31 is not collinear with the axis of rotation L4 of the separating member 34. Specifically, in the first position, the support post 35 is located in the first translational groove 344a, and in the second position, the support post 35 is located in the second translational groove 344b, since the translational groove 344 is provided with the spanning partA portion 345, and therefore, after the support column 35 moves from the first translation groove 344a to the second translation groove 344b beyond the spanning portion 345, the support column 35 will be held in the second translation groove 344b without being subjected to an external force; meanwhile, a distance L between a rotation center M of the first translational groove 344a and a rotation center N of the second translational groove 344bMNSatisfies the following conditions: l isMNG1, therefore, the second gear 141b can be completely disengaged from the tooth portion 331, and even if the developing cartridge P receives an external impact, since the power receiving member 33 is fixedly held by the supporting stand 35 via the separating member 34, the gap g1 between the tooth portion 331 and the second gear 141b on the power receiving member 33 is fixedly held, and the risk of breakage of the tooth portion 331 and the second gear 141b is eliminated.
Claims (5)
1. A counting mechanism for being mounted in the developing cartridge and for counting the developing cartridges, the counting mechanism including a counting member for being engaged with and disengaged from an external counted member, an intermediate member located between and engaged with the counting member and the power receiving member, and a separating assembly for receiving a driving force from the outside to drive the counting member to rotate;
the power receiving part can receive external driving force before counting is completed, and the position of at least one part of the separating assembly is translated relative to the position before counting is completed after counting is completed, so that the power receiving part can not receive the external driving force any more;
the separating assembly comprises a separating piece and a translation assembly which are combined with each other, wherein the separating piece is combined with the power receiving piece, and after counting is completed, the translation assembly enables the separating piece to translate;
the translation assembly includes a translation groove and a support member coupled to each other, the translation groove being provided on one of the separation member and the developing cartridge housing, the support member being provided on the other of the separation member and the developing cartridge housing.
2. The counting mechanism of claim 1, wherein the power receiving member translates as the separating member translates.
3. A developing cartridge characterized by comprising a housing and the counting mechanism according to claim 1 or 2, the counting mechanism being mounted at a longitudinal end of the housing.
4. A developing cartridge according to claim 3, wherein the translation grooves include a first translation groove and a second translation groove communicating with each other, and the support member is a support post formed to protrude from the casing, the support post supporting the rotation of the separating member in the first translation groove and the second translation groove, respectively.
5. A developing cartridge according to claim 4, wherein the separation member further includes at least one spanning portion provided on the inner wall of the translation slot, the spanning portion being a projection projecting inwardly from the inner wall of the translation slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910902914.XA CN110488582B (en) | 2017-10-11 | 2017-10-11 | Counting mechanism and developing box |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910902914.XA CN110488582B (en) | 2017-10-11 | 2017-10-11 | Counting mechanism and developing box |
| CN201710943307.9A CN107632502B (en) | 2017-10-11 | 2017-10-11 | Developing box |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710943307.9A Division CN107632502B (en) | 2017-10-11 | 2017-10-11 | Developing box |
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| Publication Number | Publication Date |
|---|---|
| CN110488582A CN110488582A (en) | 2019-11-22 |
| CN110488582B true CN110488582B (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910902914.XA Active CN110488582B (en) | 2017-10-11 | 2017-10-11 | Counting mechanism and developing box |
| CN201710943307.9A Active CN107632502B (en) | 2017-10-11 | 2017-10-11 | Developing box |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710943307.9A Active CN107632502B (en) | 2017-10-11 | 2017-10-11 | Developing box |
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| CN (2) | CN110488582B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873651A (en) * | 2018-08-29 | 2018-11-23 | 中山市迪迈打印科技有限公司 | Centering type counting component and Delevoping cartridge |
| CN108873654B (en) * | 2018-08-29 | 2024-08-20 | 南京燕智谷智控科技有限公司 | Counting assembly and developing cartridge |
| CN109188875B (en) * | 2018-10-10 | 2024-09-20 | 寓信(南京)网络科技有限公司 | Developing cartridge |
| CN119472206A (en) * | 2021-04-09 | 2025-02-18 | 珠海市源呈数码科技有限公司 | Developing cartridge |
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| CN201562127U (en) * | 2009-10-28 | 2010-08-25 | 珠海赛纳科技有限公司 | Developing device |
| CN103399475A (en) * | 2013-08-02 | 2013-11-20 | 珠海天威飞马打印耗材有限公司 | Developer box |
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| CN206497310U (en) * | 2016-03-23 | 2017-09-15 | 纳思达股份有限公司 | Drive head and developer box |
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| CN103713499B (en) * | 2013-10-10 | 2016-08-17 | 江西镭博钛电子科技有限公司 | A kind of Delevoping cartridge |
| CN203643746U (en) * | 2013-12-16 | 2014-06-11 | 江西镭博钛电子科技有限公司 | Developing box |
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| CN207366937U (en) * | 2017-10-11 | 2018-05-15 | 中山诚威科技有限公司 | Developing box |
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| CN201562127U (en) * | 2009-10-28 | 2010-08-25 | 珠海赛纳科技有限公司 | Developing device |
| CN103399475A (en) * | 2013-08-02 | 2013-11-20 | 珠海天威飞马打印耗材有限公司 | Developer box |
| CN203673223U (en) * | 2013-12-31 | 2014-06-25 | 珠海市鑫诚科技有限公司 | Developing cartridge counting gear |
| CN206497310U (en) * | 2016-03-23 | 2017-09-15 | 纳思达股份有限公司 | Drive head and developer box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107632502B (en) | 2020-04-10 |
| CN107632502A (en) | 2018-01-26 |
| CN110488582A (en) | 2019-11-22 |
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