CN113156790A - Driving force transmission assembly, rotating part, toner cartridge and electronic imaging equipment - Google Patents
Driving force transmission assembly, rotating part, toner cartridge and electronic imaging equipment Download PDFInfo
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- CN113156790A CN113156790A CN202110264063.8A CN202110264063A CN113156790A CN 113156790 A CN113156790 A CN 113156790A CN 202110264063 A CN202110264063 A CN 202110264063A CN 113156790 A CN113156790 A CN 113156790A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 40
- 238000003384 imaging method Methods 0.000 title claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 25
- 239000000696 magnetic material Substances 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000000428 dust Substances 0.000 claims 1
- 206010070834 Sensitisation Diseases 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000008313 sensitization Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
The invention provides a driving force transmission assembly, a rotating member, a toner cartridge and an electronic imaging device, wherein the driving force transmission assembly comprises a driving force receiving member and a driving gear, the driving force receiving member is provided with a rod body and a driving force receiving part positioned at one end of the rod body, and the rod body is inserted into the driving gear and drives the driving gear to rotate; the driving gear is internally provided with a mounting rack, and the body of the mounting rack is arranged at one end of the driving gear, which is close to the driving force receiving part; the rod body is provided with an abutting part, and a resetting part is arranged between the abutting part and the body of the mounting rack; the driving force receiving portion is engaged with the driving shaft, and at least one of the driving force receiving portion and the driving shaft includes a magnetic material. The rotating member includes a cylinder and a driving force transmission assembly. The toner cartridge has the above-described rotary member. The electronic imaging equipment is provided with the carbon powder box. The invention can ensure the smooth installation of the toner cartridge.
Description
Technical Field
The invention relates to the technical field of printing consumables used by a laser printer, in particular to a driving force transmission assembly, a rotating part with the driving force transmission assembly, a toner cartridge and electronic imaging equipment with the toner cartridge.
Background
In an electrophotographic apparatus such as an electrostatic copier or a digital copier, and an all-in-one printer, a toner cartridge loaded with toner is provided, and generally, the toner cartridge includes a toner accommodating chamber accommodating toner, and a rotary member such as a photosensitive drum and a developing roller is provided in the toner cartridge. In general, a rotary member such as a photosensitive drum or a developing roller is rotatably supported between both end walls of a cartridge body of a toner cartridge, and the rotary member includes a cylindrical body and a driving force transmission assembly mounted at an axial end portion of the cylindrical body.
A driving force output assembly, see fig. 1 and 2, is provided in the electronic image forming apparatus, and includes a driving shaft 18, and a pin shaft 19 is provided at an end of the driving shaft 18 to extend outside a peripheral wall of the driving shaft 18. When the electronic imaging device performs imaging, the driving shaft 18 rotates around its axis and drives the pin 19 to rotate. Drive power transmission subassembly and the cooperation of drive power output subassembly on the rotating member such as sensitization drum, under drive power output subassembly's drive, drive power transmission subassembly and follow the rotation to drive the rotating member such as sensitization drum and rotate.
Chinese patent publication No. CN105807585B discloses a rotational force transfer assembly applied to a photosensitive drum, which is matched with a driving force output assembly of an electronic imaging device, and is a driving force transfer assembly, the rotational force transfer assembly includes a drum gear, a rotational force transfer head (i.e., a driving force receiving member), an axial reset member, a tooth reset member and a rotational force receiving tooth hinged to the rotational force transfer head through a hinge shaft, wherein the rotational force receiving tooth can rotate back and forth between a coupling position and a disengagement position around the hinge shaft, the tooth reset member is a torsion spring, a coil of the torsion spring is sleeved on the hinge shaft, a torsion arm of the torsion spring abuts against the rotational force transfer head, and another torsion arm abuts against the rotational force receiving tooth. And, be equipped with the restriction revolving force on the revolving force transmission head and receive the tooth from the connection position and turn to the spacing portion of keeping away from the position, the elasticity restoring force of torsional spring forces revolving force to receive the tooth and supports and lean on spacing portion. Electronic imaging equipment during operation, drive power output assembly's round pin axle 19 can the butt receive the tooth at this revolving force to drive revolving force and receive the tooth rotation, and then drive revolving force transmission assembly and rotate. When the revolving force transmission assembly rotates, the photosensitive drum is driven to rotate, and the driving gear of the developing roller is driven to rotate simultaneously.
Be provided with the cartridge installation cavity in the electronic imaging equipment, after this cartridge installation cavity need be installed to the cartridge, drive power transmission subassembly just can drive power output assembly cooperation. In order to better mount the toner cartridge, a guiding groove is often disposed in the electronic imaging device, as shown in fig. 1 and fig. 2, a guiding groove 11 is formed on a sidewall of a toner cartridge mounting cavity of the electronic imaging device 10, the guiding groove 11 has two sidewalls 12 and 13, and when the toner cartridge is mounted in the toner cartridge mounting cavity, the driving force transmission assembly slides along the guiding groove 11 to the bottom and cooperates with a driving force output assembly disposed at the bottom of the guiding groove 11.
However, the driving force receiving member of the conventional driving force transmitting assembly is very small in size, and a slit 14 is formed at the bottom of the guide groove 11, for example, the slit 14 is formed between the driving gear 16 and the boss 17 of the electronic image forming apparatus 10. The driving force receiving member is relatively small in size and easily slides into the gap 14, so that the driving force receiving member is difficult to slide to a position matched with the driving shaft 18, the toner cartridge cannot be mounted, and the mounting and the use of the toner cartridge are affected.
Further, in the conventional driving force transmission assembly, a spring is provided in the driving gear, and the driving force receiving member is outwardly protruded under the force of the spring. When the toner cartridge is not mounted to the electronic image forming apparatus, the distance between the outer end surface of the driving force receiving member and the outer end surface of the driving gear is large, and when the toner cartridge is mounted to the electronic image forming apparatus, that is, before the toner cartridge is not mounted to the toner cartridge mounting chamber, the driving force receiving member is pressed by the guide groove 11 and is retracted into the driving gear, and at this time, the spring is compressed. When the toner cartridge is loaded into the cartridge installation chamber, the driving force receiving member is no longer urged by the guide groove 11, projects outward by the spring, and engages with the drive shaft 18.
However, since the driving force receiving member is pressed against the guide groove 11 during the installation of the toner cartridge, the installation of the toner cartridge is difficult, and the driving force receiving member is more easily slid into the gap 14 by the spring, which is more disadvantageous for the installation of the toner cartridge.
Disclosure of Invention
A first object of the present invention is to provide a driving force transmitting assembly that prevents a driving force receiving member from sliding into a gap at the bottom of a guide groove of an electronic image forming apparatus.
A second object of the present invention is to provide a rotary member having the above-described drive force transmission assembly.
A third object of the present invention is to provide a toner cartridge that is easy to install.
A fourth object of the present invention is to provide an electronic image forming apparatus using the toner cartridge described above.
In order to achieve the first object of the present invention, the driving force transmitting assembly includes a driving force receiving member and a driving gear, the driving force receiving member has a rod body and a driving force receiving portion at one end of the rod body, the rod body is inserted into the driving gear and drives the driving gear to rotate; the driving gear is internally provided with a mounting rack, and the body of the mounting rack is arranged at one end of the driving gear, which is close to the driving force receiving part; the rod body is provided with an abutting part, and a resetting part is arranged between the abutting part and the body of the mounting rack; the driving force receiving portion is engaged with the driving shaft, and at least one of the driving force receiving portion and the driving shaft includes a magnetic material.
It can be seen by above-mentioned scheme that the piece butt that resets is between butt and mounting bracket body, before the toner cartridge did not install the toner cartridge installation cavity, the piece that resets forces the butt to the direction motion of keeping away from the mounting bracket, consequently drives power and receives the piece and is in the state of retracting, consequently in the installation of toner cartridge, drives power and receives the piece and can not receive the influence of guide slot, makes things convenient for the installation of toner cartridge.
After the toner cartridge is installed in the toner cartridge installation cavity, the driving force receiving part is attracted to the driving shaft under the action of the magnetic material, so that the driving shaft is favorably meshed with the driving force receiving part, and the driving force receiving part can be effectively prevented from sliding into a gap.
One preferred scheme is that the abutting part comprises a pin shaft penetrating through the rod body, or the abutting part and the rod body are integrally formed; in the radial direction of the driving gear, the size of the abutting part is larger than that of the rod body.
Therefore, the radial dimension of the abutting piece is large, and the abutting piece is convenient for a return piece such as a spring to abut against the abutting piece.
The further scheme is that the piece that resets is the spring, and the first end butt of spring is on the body, and the second end butt of spring is in the butt.
It can be seen that the driving force receiving member is advantageously driven in a direction away from the mounting bracket by the action of the spring, ensuring that the driving force receiving member is in a retracted state.
The further proposal is that a positioning groove is arranged on the outer end surface, and magnetic materials are arranged in the positioning groove.
It follows that, since the driving force output assembly is generally made of a metal material, the provision of a magnetic material, such as a permanent magnet, in the positioning groove of the driving force receiver facilitates the engagement of the driving force receiver with the drive shaft by guiding the driving force receiver close to the drive shaft by the magnetic force of the magnet.
The magnetic material is a magnet, the number of the magnets is more than two, and the magnets are stacked in the positioning groove.
It can be seen that the attraction force to the driving force output assembly can be improved by the stacked arrangement of the plurality of magnets, and the engagement between the driving force receiving member and the driving force output assembly is facilitated.
Further, the outer surface of the magnet does not exceed the outer end surface of the driving force receiving portion. Thus, it is possible to avoid the influence of the magnet over the outer end face of the driving force receiving portion on the fit between the driving force receiving member and the drive shaft, and to ensure that the end portion of the drive shaft can protrude into the positioning groove of the driving force receiving member.
Further, a buffer member is provided between the driving force receiving portion and the mounting bracket. Like this, when the cartridge took out from the cartridge installation cavity, the bolster can cushion the impact force of drive power receiving part to drive gear, avoids drive gear and mounting bracket impaired.
Further, before the driving force receiving part is meshed with the driving shaft, the distance between the outer end face of the driving force receiving part and the outer end face of the driving gear is a first distance; after the driving force receiving part is meshed with the driving shaft, the distance between the outer end face of the driving force receiving part and the outer end face of the driving gear is a second distance; the first distance is less than the second distance.
Therefore, before the driving force receiving part is meshed with the driving shaft, the distance between the outer end face of the driving force receiving part and the outer end face of the driving gear is small, the influence of the guide groove on the driving force receiving part can be avoided, the driving force receiving part is prevented from sliding into the gap, and smooth meshing of the driving force receiving part and the driving shaft is ensured.
In order to achieve the second object of the present invention, the present invention provides a rotary member including a cylinder, and an axial end portion of the cylinder is provided with the above-described driving force transmission assembly.
In order to achieve the third object of the present invention, the toner cartridge provided by the present invention comprises a cartridge body, wherein a toner accommodating chamber is formed in the cartridge body, and the rotating member is disposed on one side of the toner accommodating chamber.
In order to achieve the fourth object of the present invention, the electronic imaging device provided by the present invention comprises a housing, wherein a toner cartridge installation cavity is arranged in the housing, a side wall of the toner cartridge installation cavity is provided with a guide groove, and the toner cartridge is installed in the toner cartridge installation cavity.
Drawings
Fig. 1 is a partial structural schematic view of the inside of an electronic imaging apparatus.
Fig. 2 is a schematic view of another perspective of a partial structure inside the electronic imaging device.
Fig. 3 is a structural diagram of the first embodiment of the toner cartridge and a partial structure inside an electronic imaging device according to the present invention.
Fig. 4 is a structural view of a part of the first embodiment of the toner cartridge of the present invention and a driving shaft.
Fig. 5 is a partially exploded view of the first embodiment of the toner cartridge of the present invention and the drive shaft.
Fig. 6 is a structural view from a first perspective of the drive power transmitting assembly of the first embodiment of the present invention.
Fig. 7 is a structural view from a second perspective of the drive power transmitting assembly of the first embodiment of the present invention.
Fig. 8 is a structural view from a third perspective of the drive power transmitting assembly of the first embodiment of the present invention.
Fig. 9 is an exploded view of the first embodiment of the drive power transmitting assembly of the present invention.
Fig. 10 is an exploded view of a partial structure of the first embodiment of the drive power transmission assembly of the invention.
Fig. 11 is an exploded view of the drive power transmitting assembly of the first embodiment of the present invention and a partial structure of the inside of the electronic image forming apparatus.
Fig. 12 is a structural view of the driving force receiving member and the driving force receiving teeth of the second embodiment of the driving force transmission assembly of the present invention.
Fig. 13 is an exploded view of the drive force receiving member and the drive force receiving teeth of the second embodiment of the drive force transmission assembly of the present invention.
Fig. 14 is a structural view of a third embodiment of the toner cartridge of the present invention.
Fig. 15 is an enlarged view of a portion of the third embodiment of the toner cartridge of the present invention.
Fig. 16 is a structural view of a third embodiment of the drive power transmitting assembly of the invention.
Fig. 17 is an exploded view of the third embodiment of the drive power transmitting assembly of the present invention.
Fig. 18 is an exploded view of the drive gear, the mounting bracket and the spring in the third embodiment of the drive power transmission assembly of the present invention.
Fig. 19 is an exploded view of a mounting bracket and a spring in a third embodiment of the drive power transmitting assembly of the present invention.
Fig. 20 is a structural view of the drive power transmitting assembly of the third embodiment of the present invention engaged with the drive shaft.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
The electronic imaging device of the embodiment may be a laser printer, a toner cartridge installation cavity is arranged in the electronic imaging device, a guide groove is arranged on a side wall of the toner cartridge installation cavity, and a gap is arranged at the bottom of the guide groove. The cartridge installation intracavity can be installed to the cartridge of this embodiment, and the cartridge is including rotating member such as sensitization drum, developer roll, and the axial end of rotating member is provided with drive power transmission subassembly.
Toner cartridge first and second embodiments:
referring to fig. 3, the toner cartridge 20 of the present embodiment has a cartridge body 21, a toner accommodating chamber is provided in the cartridge body 21, toner is accommodated in the toner accommodating chamber, and a developing roller is provided on one side of the toner accommodating chamber, the developing roller includes a cylindrical barrel, and a driving force transmitting assembly 30 is provided at one axial end of the barrel. Referring to fig. 4 and 5, the driving force transmitting assembly 30 includes a driving force receiving member 31, the driving force receiving member 31 is engageable with the driving shaft 18 of the electronic image forming apparatus 10, and the pin 19 rotates the driving force receiving member 31. The driving force transmission assembly 30 is further provided with a driving gear 40, the driving gear 40 is meshed with the plurality of gears 61 and 62, the gears 61 and 62 comprise developing roller gears, stirring frame gears and the like, and the gears 61 and 62 are driven to rotate through the driving gear 40, so that the powder feeding roller, the stirring frame and the like are driven to synchronously rotate with the developing roller.
First embodiment of drive power transmission assembly:
referring to fig. 6 to 10, the driving force transmission assembly 30 has a driving force receiving member 31 and a driving gear 40, the driving force receiving member 31 has a rod body 32 and a driving force receiving portion 34 at one end of the rod body 32, the rod body 32 is a cylindrical rod body, a pin 33 is inserted into the middle of the rod body 32, and preferably, the rod body 32 is provided with a through hole extending perpendicular to the axis of the rod body 32, the pin 33 is inserted into the through hole, and the pin 33 is interference-fitted with the through hole. Therefore, the pin 33 extends in a direction perpendicular to the axis of the rod 32. The drive gear 40 has a cavity 42 open at the upper end, and the rod 32 is inserted into the drive gear 40, i.e., extends into the cavity 42 of the drive gear 40.
The driving force receiving portion 34 is exposed to the driving gear 40, and specifically, the driving force receiving portion 34 is located on a side of the driving gear 40 closer to the driving shaft 18. The driving force receiving portion 34 is substantially in the shape of a circular truncated cone, wherein an end surface of the driving force receiving portion 34 close to the driving gear 40 is an inner end surface 35, and an end surface far from the driving gear 40 is an outer end surface 36, and as can be seen from fig. 7, the diameter of the inner end surface 35 is larger than that of the outer end surface 36, and a guide surface 38 is formed between the inner end surface 35 and the outer end surface 36. Since the driving force receiving portion 34 is substantially circular truncated cone-shaped, the guide surface 38 is a circular truncated cone surface. Also, the guide surface 38 is a flat surface in a cross-section along the axis of the driving force receiving portion 34, i.e., in the perspective shown in fig. 7. Of course, in other embodiments, the guide surface 38 may be an outwardly convex curved surface, that is, the outer contour line of the guide surface 38 is an outwardly convex curved line, which also facilitates the engagement of the driving force receiving member 31 with the drive shaft 18.
In this embodiment, the inner end surface 35 and the outer end surface 36 are both planar, and the diameter of the inner end surface 35 is between 10 cm and 24 cm. In addition, along the axis of the driving force receiving member 31, the diameter of the driving force receiving portion 34 gradually increases from the outer end surface 36 toward the inner end surface 35, and therefore, the inner end surface 35 is where the diameter of the driving force receiving portion 34 is the largest.
Two drive force receiving teeth 37 are formed on the outer end face 36 of the drive force receiving portion 34, both drive force receiving teeth 37 extending outwardly from the outer end face 36, i.e. in the direction of the drive shaft 18. When the toner cartridge 20 is mounted in the cartridge mounting chamber, the pin 19 abuts on the two driving force receiving teeth 37, and when the driving shaft 18 rotates, the pin 19 rotates the driving force receiving teeth 37, thereby rotating the driving force receiving member 31.
A concave positioning groove 39 is formed in the center of the outer end surface 36 of the driving force receiving portion 34, and the end of the driving shaft 18 can slide into the positioning groove 39, so that the driving shaft 18 and the driving force receiving portion 34 can be positioned. Further, a magnet may be installed in the positioning groove 39, and since the driving shaft 18 is generally made of a metal material, the driving force receiving member 31 may be more smoothly fitted to the driving shaft 18 by better attracting the driving shaft 18 into the positioning groove 39 by the magnet. Of course, the outer end face of the magnet cannot exceed the outer end face 36 of the driving force receiving portion 34, i.e., the magnet does not exceed the positioning groove 39, so as not to interfere with the engagement of the drive shaft 18 with the driving force receiving portion 34.
Referring to fig. 9 and 10, a spring 48 as a return member of the present embodiment is disposed in the driving gear 40, and a mounting bracket 50 is further disposed, the mounting bracket 50 has a circular ring-shaped body 51, two mounting legs 52 are disposed on one side of the body 51 close to the bottom of the driving gear 40, and a buckling portion 53 is disposed at a distal end of each mounting leg 52. Two fastening members 43 are provided in the driving gear 40, each fastening member 43 is provided with a fastening groove 45, and the fastening portion 53 can be fastened to the fastening groove 45, thereby fixing the mounting bracket 50 to the driving gear 40.
The spring 48 abuts between the bottom wall of the driving gear 40 and the body 51 of the mounting bracket 50, and preferably, one end of the spring 48 close to the body 51 is provided with a coil 49, and the coil 49 can be sleeved on the end of the pin shaft 33. And, a through hole is provided at the center of the body 51, through which the lever body 32 of the driving force receiving member 31 passes and protrudes into the driving gear 40. The pin 33 is located between the body 51 and the bottom wall of the driving gear 40, and the pin 33 can abut against the fastener 43. When the driving force receiving member 31 rotates, the pin shaft 33 rotates following the lever body 32 and rotates the driving gear 40. The peripheral wall of the drive gear 40 is provided with teeth 41, and the teeth 41 mesh with the teeth of the gears 61, 62 to rotate the gears 61, 62.
Referring to fig. 11, when the toner cartridge 20 is mounted to the toner cartridge mounting chamber of the electronic imaging apparatus 10, the driving force receiving portion 34 will slide along the guide groove 11 to the bottom of the guide groove 11. In the present embodiment, the diameter of the inner end surface 35 of the driving force receiving portion 34 is larger than the size of the slit 14 at the bottom of the guide groove 11 of the electronic imaging device 20. Thus, when the driving force receiving portion 34 slides to the bottom along the guide groove 11, the driving force receiving portion 34 does not get stuck in the slit 14 due to the large size of the inner end surface 35. Further, the driving force receiving portion 34 will smoothly pass over the projection 17 due to the presence of the guide surface 38.
During the sliding of the driving force receiving member 31 in the guide groove 11, the driving force receiving member 31 is actually pressed and moved in a direction to approach the driving gear 40, and at this time, the spring 48 is compressed. Since the driving force receiving part 34 has a structure in which the outer end surface 36 is small and the inner end surface 35 is large, the movement of the driving force receiving part 31 in the direction of the driving gear 40 is facilitated, thereby allowing the driving force transmission assembly 30 to smoothly slide to a position of engagement with the driving shaft 18.
When the driving force transmission assembly 30 is slid to the position of engagement with the drive shaft 18, the driving force receiving member 31 is no longer pressed, the driving force receiving member 31 moves in a direction away from the drive gear 40, i.e., in a direction close to the drive shaft 18, by the elastic restoring force of the spring 48, and the tip end of the drive shaft 18 enters the positioning groove 39 by the magnet. In order to limit the distance that the driving force receiving member 31 moves axially toward the drive shaft 18, the pin 33 may also abut against an inner end surface of the body 51 of the mounting bracket 50, and the movement distance of the driving force receiving member 31 is limited by the engagement of the body 51 with the pin 33, and therefore, the pin 33 constitutes a limiting member of the present embodiment.
When the drive shaft 18 rotates, the pin shaft 19 follows the rotation, and the pin shaft 19 abuts on the two drive force receiving teeth 37, thereby rotating the drive force receiving teeth 37. In this embodiment, the two driving force receiving teeth 37 are formed integrally with the driving force receiving member 31, so that the driving shaft 18 can rotate the driving force receiving member 31, and thus the entire driving force transmission assembly 30. Since the driving force receiving teeth 37 are integrally formed with the driving force receiving member 31, the production cost of the driving force transmission assembly 30 can be reduced, and the assembly process thereof is simple.
Second embodiment of drive power transmission assembly:
the driving force transmission assembly of the present embodiment has the driving force receiving member and the driving gear, and is further provided with the mounting bracket and the spring, unlike the first embodiment, the two driving force receiving teeth on the driving force receiving member of the present embodiment are not integrally formed with the driving force receiving member. Referring to fig. 12 and 13, the driving force receiver 70 has a rod body 71 and a driving force receiving portion 72 at one end of the rod body 71, a through hole 90 is formed at the center of the rod body 71, a pin shaft can be inserted into the through hole 90, and the pin shaft is in interference fit with the through hole 90.
The driving force receiving portion 72 is substantially in the shape of a circular truncated cone, wherein the end surface of the driving force receiving portion 72 close to the driving gear is an inner end surface 74, and the end surface far from the driving gear is an outer end surface 73, and as can be seen from fig. 11, the diameter of the inner end surface 74 is larger than that of the outer end surface 73, and a guide surface 75 is formed between the inner end surface 74 and the outer end surface 73, and the guide surface 75 is a circular truncated cone surface. The guide surface 75 is a flat surface on a cross-sectional plane along the axis of the driving force receiving portion 72. Of course, the guide surface 75 may be an outwardly convex curved surface.
In this embodiment, the inner end surface 74 and the outer end surface 73 are both planar, and the diameter of the inner end surface 74 is between 10 cm and 24 cm. In addition, along the axis of the driving force receiving member 70, the diameter of the driving force receiving portion 72 gradually increases from the outer end surface 73 toward the inner end surface 74, and therefore, the inner end surface 74 is where the diameter of the driving force receiving portion 72 is largest. Also, the diameter of the inner end surface 74 is larger than the size of the slit at the bottom of the electronic imaging device guide slot.
A concave positioning groove 76 is formed at the center position of the outer end surface 73 of the driving force receiving portion 72, and optionally, a magnet is placed in the positioning groove 76. Further, two drive force receiving teeth 81, 85 are formed on the outer end face 73 of the drive force receiving portion 72, both drive force receiving teeth 81, 85 extending outwardly from the outer end face 36. In the present embodiment, the two driving force receiving teeth 81, 85 are movably mounted on the driving force receiving member 70, i.e., the driving force receiving teeth 81, 85 are not integrally formed with the driving force receiving member 70.
Specifically, the driving force receiving portion 72 is provided with a mounting groove 77, two side walls of the mounting groove 77 are provided with shaft holes 78, the middle portion of the driving force receiving tooth 81 is provided with a through hole 82, the pin shaft 83 can pass through the through hole 82, two ends of the pin shaft 83 are respectively inserted into the shaft holes 78, in addition, the pin shaft 83 is externally provided with a torsion spring 84, and two ends of the torsion spring 84 are respectively abutted against the bottom wall of the mounting groove 77 and the inner wall of the driving force receiving tooth 81.
Similarly, another mounting groove 79 is further provided on the driving force receiving portion 72, shaft holes are provided on two side walls of the mounting groove 79, a through hole 86 is provided in the middle of the driving force receiving tooth 85, the pin shaft 87 can pass through the through hole 86, and two ends of the pin shaft 87 are respectively inserted into the shaft holes of the mounting groove 79, in addition, a torsion spring 88 is provided outside the pin shaft 87, and two ends of the torsion spring 88 are respectively abutted against the bottom wall of the mounting groove 79 and the inner wall of the driving force receiving tooth 85.
Thus, the driving force receiving teeth 81 and 85 can rotate relative to the driving force receiving part 72 around the pin shaft 83, and the driving force receiving teeth 81 and 85 can rotate in the engagement process of the driving shaft 18 and the driving force transmission assembly 70, which is beneficial to the smooth installation of the toner cartridge.
Since the inner end surface 74 of the driving force receiving portion 72 is large in size, the driving force receiving portion 72 does not get caught in the gap when sliding to the bottom along the guide groove during toner cartridge installation, which facilitates the installation of the toner cartridge.
Toner cartridge third embodiment:
referring to fig. 14 and 15, the toner cartridge of the present embodiment has a cartridge body 100, a toner accommodating chamber is provided in the cartridge body 100, and at least one rotating member, for example, a developing roller 101 is provided, and the developing roller 101 is driven by a driving gear 102. A driving force transmission assembly 110 is disposed at one end of the toner cartridge, and referring to fig. 16, the driving force transmission assembly 110 has a driving gear 111, the peripheral wall of the driving gear 111 is provided with teeth 112, and the driving gear 111 is engaged with the driving gear 102 and drives the developing roller 101 to rotate.
Third embodiment of drive power transmission assembly:
referring to fig. 16 and 17, the driving force transmitting assembly 100 further has a driving force receiving member 130, the driving force receiving member 130 having a rod body 131 and a driving force receiving portion 133 at one end of the rod body 131, the rod body 133 being a cylindrical rod body, and a pin 132 inserted into a middle portion of the rod body 131, preferably, the rod body 131 is provided with a through hole extending perpendicular to an axis of the rod body 131, the pin 132 is inserted into the through hole, and the pin 132 is interference-fitted with the through hole. Therefore, the pin 132 extends in a direction perpendicular to the axis of the rod 131. In this embodiment, the pin 132 serves as an abutting member and is detachably connected to the rod 131, and in other embodiments, the pin 132 may be integrally formed with the rod 131. And, in the radial direction of the rod body 131, the size of the pin 132 is larger than that of the rod body 131, so that the spring 127 as a reset member is reliably abutted on the pin 132.
The driving gear 111 has a cavity 113 with an open upper end, and the rod 131 is inserted into the driving gear 111, i.e., extends into the cavity 113 of the driving gear 111.
The driving force receiving portion 133 is exposed to the driving gear 111, and specifically, the driving force receiving portion 133 is located on a side of the driving gear 111 closer to the driving shaft. The driving force receiving portion 133 is substantially in the shape of a circular truncated cone, wherein an end surface of the driving force receiving portion 133 close to the driving gear 111 is an inner end surface, and an end surface far from the driving gear 111 is an outer end surface 134, and as can be seen from fig. 17, the diameter of the inner end surface is larger than that of the outer end surface 134, and a guide surface is formed between the inner end surface and the outer end surface 134. In the present embodiment, the guide surface is a flat surface on a cross-sectional plane along the axis of the driving force receiving portion 134. Of course, in other embodiments, the guide surface may be an outwardly convex curved surface. Preferably, both the inner end surface and the outer end surface 134 of the driving force receiving portion 133 are flat, and the diameter of the driving force receiving portion 133 is gradually increased from the outer end surface 134 toward the inner end surface along the axis of the driving force receiving portion 130, and therefore, the inner end surface is where the diameter of the driving force receiving portion 133 is the largest. Also, the diameter of the inner end surface of the driving force receiving portion 133 is larger than the size of the slit of the bottom of the guide groove of the electronic imaging apparatus.
Two drive force receiving teeth 137 are formed on the outer end face 134 of the drive force receiving portion 133, both drive force receiving teeth 137 extending outwardly from the outer end face 136. The two driving force receiving teeth 137 of this embodiment are detachably mounted on the driving force receiving portion 133, i.e. the same structure as the driving force receiving teeth of the second embodiment of the driving force transmission assembly, and will not be described herein again. Of course, the driving force receiving teeth may be formed integrally with the driving force receiving portion.
A concave positioning groove 135 is formed at the center of the outer end surface 134 of the driving force receiving portion 133, and the end of the driving shaft of the electronic image forming apparatus can slide into the positioning groove 135, thereby positioning the driving shaft with the driving force receiving portion 133. In this embodiment, two magnets 136 may be installed in the positioning groove 135, the two magnets 136 are both cylindrical and have the same size, and the two magnets 136 are installed in the positioning groove 135 in a stacked manner. Since the driving shaft is generally made of a metal material, the driving force receiving member 130 is more smoothly fitted to the driving shaft by better attracting the driving shaft into the positioning groove 135 by the magnet 136. Of course, the outer end face of the magnet 136 cannot exceed the outer end face 134 of the driving force receiving portion 133 to avoid interfering with the engagement of the driving shaft with the driving force receiving portion 133.
A mounting bracket 120 is further disposed in the driving gear 111, the mounting bracket 120 has a body 121, two mounting legs 122 are disposed on one side of the body 121 close to the bottom of the driving gear 111, and referring to fig. 18 and 19, a buckling portion 123 is disposed at a distal end of each mounting leg 122. Two fastening members 114 are provided in the driving gear 11, each fastening member 114 is provided with a fastening groove 116, and the fastening portion 123 can be fastened to the fastening groove 116, thereby fixing the mounting bracket 120 to the driving gear 111.
And, a limiting groove 115 is further provided in the driving gear 111, and the end of the pin 132 is limited in the limiting groove 115, so that when the driving force receiving member 130 rotates, the pin 132 rotates and drives, and pushes the side wall of the limiting groove 115 to drive the driving gear 111 to rotate.
A spring 127 serving as a reset piece is installed in the driving gear 111, and the spring 127 is sleeved outside the rod body 131. And, the spring 127 abuts between the pin 132 and the bottom wall 124 of the body 121 of the mounting bracket 120. Thus, when the driving force receiving member 130 is not subjected to the external force, the spring 127 applies a force to the pin shaft 132, and the driving force receiving portion 133 moves in a direction approaching the driving gear 111 by the spring 127. As shown in fig. 16, when the driving force receiver 130 is not subjected to an external force, for example, a toner cartridge is not mounted to the toner cartridge mounting chamber, i.e., before the power receiving portion 133 is not engaged with the drive shaft, the distance between the outer end face 134 of the driving force receiving portion 130 and the outer end face 118 of the drive gear is a first distance D1. The drive gear outer end face 118 is an end face of the drive gear 111 near the drive force receiving portion 130.
When the toner cartridge is mounted to the toner cartridge mounting chamber, the driving force receiving portion 133 is brought close to and engaged with the drive shaft by the magnet 136, as shown in fig. 20, at this time, the distance between the outer end face 134 of the driving force receiving portion 130 and the outer end face 118 of the drive gear is the second distance D2, and the first distance D1 is smaller than the second distance D2, that is, after the driving force receiving portion 133 is engaged with the drive shaft, the driving force receiving member 130 is projected outward, that is, in the direction of the drive shaft. At this time, the spring 127 is compressed.
When the toner cartridge is taken out of the toner cartridge installation chamber, the driving force receiving part 133 is no longer engaged with the driving shaft, and the driving force receiving part 130 moves in the direction of the driving gear 111 by the elastic restoring force of the spring 127. In order to prevent the driving force receiving part 133 from causing impact on the driving gear 111, a buffer member 128 is disposed between the driving force receiving part 133 and the mounting bracket 120, in this embodiment, the buffer member 128 is made of sponge, a through hole 129 is disposed at the middle of the buffer member 128, and the rod 131 of the driving force receiving member 130 can pass through the through hole 129.
It can be seen that, in the process of installing the toner cartridge, before the driving force receiving portion 133 is not engaged with the driving shaft, the driving force receiving portion 133 is in the retracted state, so that the driving force receiving portion is not easily affected by the guide groove, which is beneficial to installing the toner cartridge, and the driving force receiving portion 133 is not easily slid into the gap, so that the installation of the toner cartridge is smoother. After the toner cartridge is mounted in the toner cartridge mounting chamber, the driving force receiving portion 133 is firmly engaged with the driving shaft under the action of the magnet 136, thereby ensuring the operation of the toner cartridge.
Of course, the present embodiment is to provide the magnet on the driving force receiving member 130, and in practical applications, the magnet may be provided on the driving shaft of the electronic image forming apparatus, or the driving force receiving member 130 and the driving shaft may be provided with magnets, but the polarity of the magnet of the driving force receiving member 130 is opposite to that of the magnet of the driving shaft.
It should be noted that the above-described driving force transmission assembly may be used not only for driving the developing roller but also for driving a rotary member such as a photosensitive drum or a powder feeding roller. In addition, the same technical effect can be achieved without providing the magnet on the driving force receiving member and with the entire driving force receiving member being made of a magnetic material, or with the driving shaft of the electronic image forming apparatus being made of a magnetic material.
The above embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications made based on the structure, characteristics and principles of the invention as claimed should be included in the claims of the present invention.
Claims (10)
1. A drive power transmission assembly comprising:
the driving force receiving part is provided with a rod body and a driving force receiving part positioned at one end of the rod body, and the rod body is inserted into the driving gear and drives the driving gear to rotate;
the method is characterized in that:
a mounting rack is arranged in the driving gear, and a body of the mounting rack is arranged at one end of the driving gear, which is close to the driving force receiving part;
the rod body is provided with an abutting part, and a resetting part is arranged between the abutting part and the body of the mounting rack;
the driving force receiving portion is engaged with a driving shaft, and at least one of the driving force receiving portion and the driving shaft includes a magnetic material.
2. The drive power transmitting assembly according to claim 1, characterized in that:
the abutting part comprises a pin shaft penetrating through the rod body, or the abutting part and the rod body are integrally formed;
in the radial direction of the driving gear, the size of the abutting part is larger than that of the rod body.
3. The drive power transmitting assembly according to claim 2, characterized in that:
the reset piece is a spring, a first end of the spring is abutted to the body, and a second end of the spring is abutted to the abutting piece.
4. The drive power transmitting assembly according to any one of claims 1 to 3, characterized in that:
the outer end face of the driving force receiving portion is provided with a positioning groove, and the magnetic material is installed in the positioning groove.
5. The drive power transmitting assembly according to claim 4, characterized in that:
the magnetic material is a magnet, the number of the magnets is more than two, and the magnets are stacked in the positioning groove.
6. The drive power transmitting assembly according to any one of claims 1 to 3, characterized in that:
a buffer member is arranged between the driving force receiving part and the mounting frame.
7. The drive power transmitting assembly according to any one of claims 1 to 3, characterized in that:
the distance between the outer end face of the driving force receiving part and the outer end face of the driving gear is a first distance before the driving force receiving part is meshed with the driving shaft;
after the driving force receiving part is meshed with the driving shaft, the distance between the outer end face of the driving force receiving part and the outer end face of the driving gear is a second distance;
the first distance is less than the second distance.
8. The rotating member comprises a cylinder body and is characterized in that: the barrel axial end portion is provided with a drive force transmission assembly according to any one of claims 1 to 7.
9. The cartridge, including the box body, be formed with the carbon dust in the box body and hold the chamber, its characterized in that: a rotating member according to claim 8 is further provided in the cartridge.
10. Electronic imaging equipment, including the casing, be provided with the cartridge installation cavity in the casing, the lateral wall of cartridge installation cavity has guide slot, its characterized in that: the toner cartridge of claim 9 is mounted in the toner cartridge mounting cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110264063.8A CN113156790A (en) | 2021-03-11 | 2021-03-11 | Driving force transmission assembly, rotating part, toner cartridge and electronic imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110264063.8A CN113156790A (en) | 2021-03-11 | 2021-03-11 | Driving force transmission assembly, rotating part, toner cartridge and electronic imaging equipment |
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| CN113156790A true CN113156790A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110264063.8A Pending CN113156790A (en) | 2021-03-11 | 2021-03-11 | Driving force transmission assembly, rotating part, toner cartridge and electronic imaging equipment |
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| CN (1) | CN113156790A (en) |
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