CN216526738U - Developing box - Google Patents
Developing box Download PDFInfo
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- CN216526738U CN216526738U CN202121728924.5U CN202121728924U CN216526738U CN 216526738 U CN216526738 U CN 216526738U CN 202121728924 U CN202121728924 U CN 202121728924U CN 216526738 U CN216526738 U CN 216526738U
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- transmission shaft
- box body
- sleeve
- driving force
- developing cartridge
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Abstract
The utility model provides a developing box which comprises a box body, a developing roller, a driving force receiving head, a detection mechanism, a transmission shaft and a sleeve, wherein the box body is provided with a carbon powder accommodating part and a powder outlet, the developing roller is rotatably supported at the powder outlet, the driving force receiving head is arranged on a first end wall of the box body, a tooth part is arranged on the peripheral wall of the driving force receiving head, the detection mechanism is arranged on a second end wall of the box body, the transmission shaft is columnar and extends along the length direction of the box body, the transmission shaft is rotatably arranged in the carbon powder accommodating part, a first end of the transmission shaft is provided with a first driving wheel, the first driving wheel and the driving force receiving head are positioned on the same side of the box body, and the first driving wheel is in transmission connection with the driving force receiving head. The second end of the transmission shaft is provided with a second driving wheel which is matched with the rotating piece. The sleeve pipe is internally provided with an installation cavity isolated from the carbon powder containing part, the transmission shaft is positioned in the installation cavity, and the transmission shaft is in clearance fit with the sleeve pipe. The developing cartridge can reduce torque generated by rotation.
Description
Technical Field
The utility model relates to the field of electrophotographic imaging, in particular to a developing box.
Background
Image forming apparatuses generally use a detachable developing cartridge to supply toner thereto to develop an electrostatic latent image on a photosensitive member, and then transfer the developed image onto a medium such as paper to form a visible image.
The utility model provides a current developing box includes the box body, two axial ends of box body are provided with the driving head respectively and have the detection wheel of scarce tooth, the developer that holds the developer in the box body holds the room and goes out the powder mouth, the developer holds the stirring frame that the intracavity has the stirring developer, the developer roll sets up in powder mouth department, the gear train that drive stirring frame and developer roll are rotatory is installed in the box body outside, the first axial end of stirring frame is provided with first stirring gear, driving head and first stirring gear all with middle transmission gear engagement and to stirring frame transmission rotary driving power, the second axial end of stirring frame is provided with second stirring gear, the detection wheel can mesh with second stirring gear, and it is protruding to be provided with the contact of the contact member among the trigger image forming apparatus on the detection wheel. When a new developing cartridge is mounted to the image forming apparatus, the driving gear is driven to rotate, the detection gear engaged with the driving gear is driven to rotate, the contact protrusion on the detection gear rotates and triggers the contacted member in the image forming apparatus, and the image forming apparatus detects that the developing cartridge is new. When the detection gear rotates to the state that the tooth-lacking part faces the driving gear, the detection gear is not meshed with the driving gear any more, and the detection gear does not rotate along with the rotation of the driving gear any more.
In order to solve the problems that when a driving belt drives a developing roller, a powder feeding roller and a stirring frame to rotate, a driving force receiving head is subjected to large rotating twisting force and large torque, and a transmission head in an imaging device is easily damaged, the applicant discloses a developing box in the patent document with the publication number of CN110727186A, wherein a transmission shaft is arranged to transmit rotating driving force, so that the rotating torque is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a developing cartridge capable of reducing torque generated by rotation.
In order to achieve the above object, the present invention provides a developing cartridge, which includes a cartridge body, a developing roller, a driving force receiving head, a detecting mechanism, a transmission shaft and a sleeve, wherein the cartridge body has a toner accommodating portion and a toner outlet, the developing roller is rotatably supported at the toner outlet, the driving force receiving head is disposed on a first end wall of the cartridge body for receiving a rotational driving force, a tooth portion is disposed on a peripheral wall of the driving force receiving head, the detecting mechanism is disposed on a second end wall of the cartridge body, the detecting mechanism includes a rotating member, the transmission shaft extends along a length direction of the cartridge body, the transmission shaft is rotatably mounted in the toner accommodating portion, a first end of the transmission shaft is provided with a first driving wheel, the first driving wheel and the driving force receiving head are located on a same side of the cartridge body, and the first driving wheel is in transmission connection with the driving force receiving head. The second end of the transmission shaft is provided with a second driving wheel which is matched with the rotating piece and transmits driving force to the rotating piece. The sleeve pipe is internally provided with an installation cavity isolated from the carbon powder containing part, the transmission shaft is positioned in the installation cavity, and the transmission shaft is in clearance fit with the sleeve pipe.
It is thus clear by above-mentioned scheme, come transmission rotary driving power through setting up the transmission axle, and rotary driving power no longer through the transmission of the stirring frame that has stirring vane, and simultaneously, set up the sleeve outside the transmission axle, separate the carbon dust in transmission axle and the carbon dust portion of holding, the transmission axle is in the place of rotation in-process not with the carbon dust contact to further reduced rotatory moment of torsion, the transmission head of protection printer, effectively guarantee simultaneously that the piece rotary motion rotates, the realization detects with printer detection portion accuracy. In addition, the driving force receiving head and the detection mechanism are respectively arranged at the two ends of the box body in the length direction, so that the size of the developing box in the width direction can be reduced, and the miniaturization of the developing box is realized. In addition, because the transmission shaft is positioned in the sleeve, the requirements on the shape and the structure of the transmission shaft are not high, and the existing stirring frame can be recycled, so that the cost is saved.
Preferably, the sleeve is detachably and fixedly connected with the box body.
The further scheme is that a supporting seat is arranged in the box body, and the first end of the sleeve is supported on the supporting seat.
Preferably, a positioning protrusion is arranged on the inner wall of the second end wall, the first end of the sleeve is inserted into the positioning protrusion, and the second end of the sleeve abuts against the inner wall of the first end wall.
It follows that the mounting and positioning of the bushing is facilitated.
The further scheme is that a first through hole is formed in the first end wall, a second through hole which is opposite to the first through hole in the length direction of the box body is formed in the second end wall, and the second through hole penetrates through the second end wall and the positioning protrusion. The first end of the transmission shaft passes through the first through hole, and the second end of the transmission shaft passes through the second through hole.
In a preferred embodiment, the transmission shaft is cylindrical and the sleeve is cylindrical.
It is further possible that the transfer shaft is arranged coaxially with the sleeve.
Preferably, the peripheral wall of the drive force receiving head is provided with teeth, and the first drive wheel is engaged with the teeth.
Preferably, the peripheral wall of the driving force receiving head is provided with a toothed portion, and the developing cartridge further includes an intermediate transmission gear, and the toothed portion and the first driving wheel are both meshed with the intermediate transmission gear.
Preferably, the inner side surface of the first end wall of the cartridge body is provided with a developing holder, the axial end of the developing roller is supported by the developing holder, and the developing holder is detachably connected to the cartridge body.
Therefore, the developing support is independently arranged on the inner side surface of the box body, and the developing roller is replaced when the powder box is overhauled and recycled.
Drawings
Fig. 1 is a structural exploded view of an embodiment of the developing cartridge of the present invention.
Fig. 2 is a sectional view of a first position of the developing cartridge embodiment of the present invention.
Fig. 3 is a sectional view of a second position of the embodiment of the developing cartridge of the present invention.
Fig. 4 is a structural view of the transmission shaft, the gear train and the detection mechanism in the embodiment of the developing cartridge of the present invention.
Fig. 5 is a structural view of a gear train in the developing cartridge embodiment of the present invention.
Fig. 6 is a partial view of a developing cartridge according to an embodiment of the present invention after concealing a part of the components.
The utility model is further explained with reference to the drawings and the embodiments.
Detailed Description
Referring to fig. 1 to 3, the developing cartridge in the present embodiment includes a cartridge body 1, an end cap 15, an end cap 16, a developing roller 2, a powder feed roller 6, a driving force receiving head 3, a detection mechanism 4, a transmission shaft 5, a sleeve 7, and a conductive member 8.
The box body 1 is provided with a carbon powder accommodating part 11 and a powder outlet 12, the developing roller 2 is rotatably supported at the powder outlet 12, a developing roller gear 21 is arranged at the axial end of the developing roller 2, the powder feeding roller 6 is rotatably supported in the carbon powder accommodating part 11 and is adjacent to the developing roller 2, the powder feeding roller 6 is used for conveying carbon powder in the carbon powder accommodating part 11 to the developing roller 2, and a powder feeding roller gear 61 is arranged at the axial end of the powder feeding roller 6.
The end cap 16 is mounted on the first end wall 13, and the driving force receiving head 3 is provided on the first end wall 13 of the cartridge body 1 between the end cap 16 and the first end wall 13, the driving force receiving head 3 being for receiving a rotational driving force transmitted from a driving head of the image forming apparatus. The medial surface of first endwall 13 is provided with development support 130, and an axial end of developer roll 2 is supported by development support 130, and development support 130 is connected with box body 1 detachably, and development support 130 sets up alone on box body 1 medial surface, changes developer roll 2 when being favorable to the maintenance of powder box and retrieving to recycle.
The end cap 15 is attached to the second end wall 14, the detection mechanism 4 and the conductive member 8 are positioned between the second end wall 14 and the end cap 15, the transmission shaft 5 is cylindrical and extends in the longitudinal direction of the cartridge 1, and the transmission shaft 5 is rotatably supported in the toner housing 11. The conductive member 8 is mounted on the second end wall 14 and a portion of the conductive member 8 is exposed from the end cap 15 for electrical connection with the printer. The developing roller 2 and the powder feed roller 6 are electrically connected to the conductive member 8.
Referring to fig. 3 to 6, the first end of the transmission shaft 5 is provided with a first drive wheel 51, the peripheral wall of the driving force receiving head 3 is provided with teeth 31, the developing roller gear 21, the powder feed roller gear 61 and the intermediate transmission gear 53 are all engaged with the teeth 31, and the first drive wheel 51 is connected to the driving force receiving head 3 through the intermediate transmission gear 53. The driving force receiving head 3, the developing roller gear 21, the powder feeding roller gear 61, the intermediate transmission gear 53, and the first driving wheel 51 form a gear train for transmitting the driving force, which is mounted on the first end wall 13. Alternatively, the cross section of the transmission shaft may be rectangular, triangular, pentagonal, elliptical, or irregular, or the transmission shaft may be a screw or a rod of a stirring rack in the conventional powder box. In this embodiment, the transmission shaft has a cylindrical shape.
The sleeve pipe 7 is cylindrical, a mounting cavity 71 isolated from the carbon powder containing part 11 is formed in the sleeve pipe 7, and the transmission shaft 5 is located in the mounting cavity 71, so that carbon powder in the carbon powder containing part 11 cannot enter the mounting cavity 71, and the transmission shaft 5 cannot be contacted with the carbon powder in the rotating process. The transmission shaft 5 is in clearance fit with the sleeve 7, the transmission shaft 5 and the sleeve 7 are coaxially arranged, and the inner diameter of the sleeve 7 is larger than the outer diameter of the transmission shaft 5, so that the transmission shaft 5 cannot be in contact with the inner wall of the sleeve 7 in the rotating process.
The sleeve 7 is detachably and fixedly connected with the box body 1. A supporting seat 17 is arranged in the box body 1, the first end 72 of the sleeve 7 is supported on the supporting seat 17, a positioning bulge 141 is arranged on the inner wall of the second end wall 14 of the box body 1, the first end 72 of the sleeve 7 is inserted into the positioning bulge 141, and the second end 73 of the sleeve 7 is abutted against the inner wall of the first end wall 13 of the box body 1. The first end wall 13 is provided with a first through hole 131, the second end wall 14 is provided with a second through hole 142 opposite to the first through hole 131 in the length direction of the box body 1, and the second through hole 142 penetrates through the second end wall 14 and the positioning protrusion 141. A first end of the transmission shaft 5 passes through the first through hole 131 and then is connected to the first driving wheel 51, a second end of the transmission shaft 5 passes through the second through hole and then is connected to the second driving wheel 52, the second driving wheel 52 is engaged with the rotating member 41 of the detecting mechanism 4 and transmits a driving force to the rotating member 41, and the second driving wheel 52 is interference-engaged with the large-diameter portion 414 of the clutch wheel 411 on the rotating member 41 and can be clearance-engaged with a small-diameter portion (not shown) of the clutch wheel 411.
Referring to fig. 5, the detection mechanism 4 includes a rotation piece 41, a contact member 42, an elastic force member 43, and an urging member 44. The specific structure of the detection mechanism 4 is the same as that of the compact disclosed in patent document CN110727186A, and is not described herein again.
When the developing cartridge is in operation, the driving force receiving head 3 receives the driving force to rotate, so as to drive the first driving wheel 51 to rotate, and thus drive the transmission shaft 5 and the second driving wheel 52 to rotate, the large diameter portion 414 of the clutch wheel 411 of the rotating member 41 is in interference fit with the friction layer 522 of the second driving wheel 52, and the rotating member 41 is driven by the friction between the large diameter portion and the friction layer, so that the rotating member 41 rotates, thereby completing the triggering of the contacted member 100, and the developing cartridge is new and the capacity information of the developing cartridge is transmitted to the image forming apparatus. Since the transmission shaft 5 is located in the fitting cavity 71 of the sleeve 7, it does not come into contact with the toner in the toner accommodating portion 11 during rotation, thereby further reducing the torque of rotation.
It is from top to bottom visible, come transmission rotary driving power through setting up the transmission axle, and rotary driving power no longer through the stirring frame transmission that has stirring vane, and simultaneously, set up the sleeve outside the transmission axle, separate the carbon dust in transmission axle and the carbon dust portion of holding, the transmission axle is in the rotatory ground in-process not with the carbon dust contact, thereby further reduced rotatory moment of torsion, the transmission head of protection printer, effectively guarantee simultaneously that the piece rotary motion rotates, the realization detects with printer detection portion accuracy. In addition, the driving force receiving head and the detection mechanism are respectively arranged at the two ends of the box body in the length direction, so that the size of the developing box in the width direction can be reduced, and the miniaturization of the developing box is realized. In addition, because the transmission shaft is positioned in the sleeve, the requirements on the shape and the structure of the transmission shaft are not high, and the existing stirring frame can be recycled, so that the cost is saved.
Furthermore, the first drive wheel can also directly engage with a toothing on the circumferential wall of the drive force receiving head. The second driving wheel can also be in transmission connection with the rotating element through an intermediate transmission gear. The sleeve may also be integrally formed with the cartridge body. The shape of the sleeve and the shape of the transfer shaft can be varied as desired. The second drive wheel may also be a gear. The friction layer arranged on the second driving wheel can also be made of hard materials, the hard materials can be plastic rubber and the like, and patterns or friction bulges for increasing the friction force of the friction layer are arranged on the surface of the friction layer, which is in contact with the elastic friction layer. The peripheral wall of the second driving wheel can be provided with a mounting groove, and the friction layer is mounted in the mounting groove in an interference fit mode, so that the friction layer is positioned. The above-described modifications also achieve the object of the present invention.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, not limitations, and various changes and modifications may be made by those skilled in the art, without departing from the spirit and scope of the utility model, and any changes, equivalents, improvements, etc. made within the spirit and scope of the present invention are intended to be embraced therein.
Claims (10)
1. A developing cartridge, comprising:
the box body is provided with a carbon powder accommodating part and a powder outlet;
a developing roller rotatably supported at the powder outlet;
a driving force receiving head provided on the first end wall of the case for receiving a rotational driving force, the driving force receiving head having a circumferential wall provided with a tooth portion;
the detection mechanism is arranged on the second end wall of the box body and comprises a rotating part;
the transmission shaft extends along the length direction of the box body, the transmission shaft is rotatably installed in the carbon powder containing part, a first driving wheel is arranged at the first end of the transmission shaft, the first driving wheel and the driving force receiving head are positioned on the same side of the box body, the first driving wheel is in transmission connection with the driving force receiving head, a second driving wheel is arranged at the second end of the transmission shaft, and the second driving wheel is matched with the rotating piece and transmits driving force to the rotating piece;
the method is characterized in that:
the developing box further comprises a sleeve, an installation cavity isolated from the carbon powder containing part is formed in the sleeve, the transmission shaft is located in the installation cavity, and the transmission shaft is in clearance fit with the sleeve.
2. A developing cartridge according to claim 1, wherein:
the sleeve is detachably and fixedly connected with the box body.
3. A developing cartridge according to claim 2, wherein:
a supporting seat is arranged in the box body, and the first end of the sleeve is supported on the supporting seat.
4. A developing cartridge according to claim 2, wherein:
the inner wall of the second end wall is provided with a positioning bulge, the first end of the sleeve is inserted in the positioning bulge, and the second end of the sleeve is abutted to the inner wall of the first end wall.
5. A developing cartridge according to claim 4, wherein:
the first end wall is provided with a first through hole, the second end wall is provided with a second through hole which is opposite to the first through hole in the length direction of the box body, and the second through hole penetrates through the second end wall and the positioning bulge;
the first end of the transmission shaft penetrates through the first through hole, and the second end of the transmission shaft penetrates through the second through hole.
6. A developing cartridge according to any one of claims 1 to 5, wherein:
the transmission shaft is cylindrical, and the sleeve is cylindrical.
7. A developing cartridge according to claim 6, wherein:
the transmission shaft is arranged coaxially with the sleeve.
8. A developing cartridge according to any one of claims 1 to 5, wherein:
the first drive wheel is meshed with the toothed portion.
9. A developing cartridge according to any one of claims 1 to 5, wherein:
the developing cartridge further includes an intermediate transmission gear, and the tooth portion and the first drive wheel are both meshed with the intermediate transmission gear.
10. A developing cartridge according to any one of claims 1 to 5, wherein:
the medial surface of the first end wall of box body is provided with the development support, the axial end quilt of developer roll the development support supports, the development support with the box body detachably connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121728924.5U CN216526738U (en) | 2021-07-27 | 2021-07-27 | Developing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121728924.5U CN216526738U (en) | 2021-07-27 | 2021-07-27 | Developing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216526738U true CN216526738U (en) | 2022-05-13 |
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ID=81460647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121728924.5U Active CN216526738U (en) | 2021-07-27 | 2021-07-27 | Developing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216526738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113608419A (en) * | 2021-07-27 | 2021-11-05 | 珠海天威飞马打印耗材有限公司 | Developing box |
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2021
- 2021-07-27 CN CN202121728924.5U patent/CN216526738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113608419A (en) * | 2021-07-27 | 2021-11-05 | 珠海天威飞马打印耗材有限公司 | Developing box |
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