CN112859562A - Cartridge for electrophotographic image forming apparatus - Google Patents
Cartridge for electrophotographic image forming apparatus Download PDFInfo
- Publication number
- CN112859562A CN112859562A CN202110272349.0A CN202110272349A CN112859562A CN 112859562 A CN112859562 A CN 112859562A CN 202110272349 A CN202110272349 A CN 202110272349A CN 112859562 A CN112859562 A CN 112859562A
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- CN
- China
- Prior art keywords
- clutch
- image forming
- cartridge
- forming apparatus
- electrophotographic image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 210000000078 claw Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Images
Classifications
-
- 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 present invention relates to a cartridge for an electrophotographic image forming apparatus, including a driving assembly and a driving end cap at a driving end portion thereof; wherein, drive assembly includes: the power receiving component is provided with a power receiving part and a connecting rod part, a first clutch part is slidably sleeved on the connecting rod part, and the first clutch part is arranged to rotate synchronously with the power receiving component; the power transmission component is rotationally connected with the connecting rod part and is provided with a second clutch part; an elastic element which is arranged between the first clutch part and the second clutch part and applies elastic force for separating the first clutch part and the second clutch part to the first clutch part; and a pressing member rotatably provided at the driving end portion for applying a pressing force to the first clutch portion to engage the first clutch portion with the second clutch portion. The cartridge of the present invention can be smoothly attached to and detached from an electrophotographic image forming apparatus, and can stably receive and transmit a rotational driving force.
Description
Technical Field
The present invention relates to a cartridge for an electrophotographic image forming apparatus.
Background
An electrophotographic image forming apparatus such as a printer, a copier, a multifunction machine, etc., is generally mounted with a cartridge, which is generally provided with at least a drive assembly including a power receiving member capable of receiving a rotational driving force from a drive head of the electrophotographic image forming apparatus to drive the developing roller and/or the photosensitive drum to rotate, a developing roller, and/or a photosensitive drum.
The cartridge is usually detachably mounted in the electrophotographic image forming apparatus, and in order to facilitate the operations of taking out and mounting the cartridge, it is required that the power receiving member be smoothly separated from and engaged with the driving head of the electrophotographic image forming apparatus during the operation. In the prior art, in order to facilitate the separation and engagement of the power receiving member and the driving head, the power receiving member is usually configured to be capable of deflecting or telescoping relative to the driving head during the separation and engagement, but both of these structures have certain disadvantages.
When the deflection structure (such as a universal wheel structure) runs from an included angle direction to a non-included angle direction, the relative distance of the deflection structure in the axial direction can be extended, so that the power receiving component and the driving head are pressed tightly, the friction force between the power receiving component and the driving head is increased, the torque is increased correspondingly, and the abrasion is increased.
The telescopic structure controls the telescopic of the power receiving component through the elastic component, but has strict requirement on elastic force control, the small elastic force easily causes unstable meshing of the power receiving component and the driving head during working, and the large elastic force easily causes difficult mounting and taking out of the box.
Disclosure of Invention
A primary object of the present invention is to provide a cartridge for an electrophotographic image forming apparatus, which can be smoothly attached to and detached from the electrophotographic image forming apparatus, and which can stably receive a rotational driving force from the electrophotographic image forming apparatus.
In order to achieve the above-mentioned primary object, the present invention provides a cartridge for an electrophotographic image forming apparatus, including a driving assembly and a driving end cap at a driving end portion thereof; wherein, drive assembly includes:
the power receiving component is provided with a power receiving part and a connecting rod part, a first clutch part is slidably sleeved on the connecting rod part, and the first clutch part is arranged to rotate synchronously with the power receiving component;
a power transmission member rotatably connected to the connection rod portion; the power transmission component is provided with a second clutch part;
an elastic element arranged between the first clutch part and the second clutch part and used for applying elastic force for separating the first clutch part from the second clutch part to the first clutch part;
and a pressing member rotatably provided at the driving end portion about the first pivot shaft, for applying a pressing force to the first clutch portion to engage the first clutch portion with the second clutch portion.
In the invention, a clutch structure comprising a first clutch part and a second clutch part is formed between the power receiving component and the power transmission component, the first clutch part and the second clutch part are kept in a separated state under the action of the elastic element in the mounting and dismounting process of the cartridge, and the power receiving component can rotate freely in the circumferential direction and cannot interfere with a driving head of the imaging device, so that the cartridge can be smoothly mounted to and taken out of the imaging device. In an image forming operation, a force from an electrophotographic image forming apparatus is transmitted to a pressing member, the pressing member applies a pressing force to a first clutch portion to engage the first clutch portion with a second clutch portion against an elastic force of an elastic member, a power transmitting member rotates in synchronization with a power receiving member, and a cartridge can stably receive a rotational driving force from a driving head of the image forming apparatus.
According to an embodiment of the present invention, the first clutch portion is disposed outside the second clutch portion in the longitudinal direction of the connecting rod portion.
According to an embodiment of the invention, the first pivot is arranged on the drive end cap and arranged perpendicular to the connecting rod portion.
According to a specific embodiment of the present invention, the driving assembly further comprises a platen member, the platen member being at least translationally sleeved on the connecting rod portion; the pressing member abuts against the pressure plate member, and applies a pressing force to the first clutch portion via the pressure plate member to engage the first clutch portion with the second clutch portion. The pressure plate member is provided, so that the pressing member can apply the pressing force to the first clutch part more stably and uniformly.
More specifically, the pressing member has a pressing end partially surrounding the connection lever portion, the pressing end abutting against the platen member. The pressing end is arranged to partially surround the connecting rod part, and the pressing member can be used for applying pressing force to the first clutch part more stably and uniformly.
According to an embodiment of the present invention, the driving end portion is further provided with a movable member that is driven by the electrophotographic image forming apparatus to move between a first position and a second position; when the movable member moves from the first position to the second position, the movable member drives the pressing member to rotate around the first pivot, and the pressing member applies pressing force to the first clutch portion to enable the first clutch portion to be meshed with the second clutch portion.
More specifically, the movable member is arranged to rotate about a second pivot axis, which is perpendicular to the first pivot axis; an abutment slope is formed between the movable member and the pressing member, and the abutment slope is disposed obliquely with respect to the first pivot shaft and the second pivot shaft.
According to a specific embodiment of the invention, the connecting rod part is provided with an annular groove, and the power receiving component is provided with a clamping convex part; the clamping convex part is inserted into the annular groove and can rotate along the annular groove.
According to an embodiment of the invention, the first clutch part is provided with a guide groove, the connecting rod part is provided with a guide projection, and the guide projection and the guide groove are in sliding fit in the length direction of the connecting rod part.
According to an embodiment of the present invention, the power transmission member includes a gear portion that rotates the developing roller or the photosensitive drum in the cartridge through a gear transmission mechanism. In addition, a power transmission member may be attached to the end of the developing roller or the photosensitive drum to directly rotate the developing roller or the photosensitive drum.
To more clearly illustrate the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Drawings
FIG. 1 is a block diagram of an embodiment of a developing cartridge of the present invention;
FIG. 2 is a block diagram of the developer cartridge of FIG. 1 with the drive end cap removed;
FIG. 3 is a block diagram of a portion of the drive assembly of the present invention;
FIG. 4 is an exploded view of a portion of the drive assembly of the present invention;
FIG. 5 is a projection view of the drive end side of FIG. 2 with the movable member in a first position;
FIG. 6 shows the drive assembly in a first position of the movable member;
FIG. 7 is a projection view of the drive end side of FIG. 2 with the movable member in a second position;
fig. 8 shows the state of the drive assembly when the movable member is in the second position.
Detailed Description
In the present invention, the cartridge used in the electrophotographic image forming apparatus may be a developing cartridge including a developing roller, a photosensitive drum cartridge including a photosensitive drum, or a process cartridge including a developing roller and a photosensitive drum, which cartridges are required to be provided with a driving assembly that receives a rotational driving force from a driving head of the electrophotographic image forming apparatus to drive the developing roller or the photosensitive drum therein to rotate. Next, a developing cartridge will be described as an example.
As shown in fig. 1 to 2, the developing cartridge of the embodiment includes a frame 1, a developing roller 2, a driving assembly 3, a gear transmission mechanism 4, and a driving end cap 5. Wherein the developing roller 2 is rotatably supported on the frame 1, and the driving assembly 3, the gear transmission mechanism 4 and the driving end cap 5 are provided at the driving end of the developing cartridge. The driving assembly 3 may receive a rotational driving force from a driving head of the electrophotographic image forming apparatus and rotate the developing roller 2 through the gear transmission mechanism 4.
As shown in fig. 3 and 4, the drive assembly 3 includes a power receiving member 31 and a power transmitting member 32. The power receiving member 31 has a power receiving portion 311 and a connecting lever portion 312, and the power receiving portion 311 engages with a driving head of the electrophotographic image forming apparatus to receive a rotational driving force. The power transmission member 32 includes a gear portion 321, and the gear portion 321 constitutes a drive gear of the gear transmission mechanism 4.
The power transmission member 32 is rotatably connected to the connection lever portion 312. Specifically, the connection rod 312 has an annular groove 313, and the power receiving member 32 is provided with one or more (e.g., two) snap protrusions 322, and the snap protrusions 322 are inserted into the annular groove 313 and can rotate along the annular groove 413. The snap protrusion 322 is preferably elastically deformed so as to be easily inserted into the annular groove 413. The engaging protrusion 322 and the gear portion 321 may be integrally formed or may be separately assembled.
The connecting rod portion 312 is slidably fitted with a first clutch portion 35, and the first clutch portion 35 is provided to rotate in synchronization with the power receiving member 31. Specifically, one or more (e.g., two) guide grooves 351 are formed in the first clutch portion 35, one or more guide protrusions 314 are correspondingly formed on the connecting rod portion 312, and the guide protrusions 314 and the guide grooves 315 are slidably engaged in the length direction of the connecting rod portion 312. Thus, the first clutch portion 35 can move in the longitudinal direction of the connecting rod portion 312, and keeps rotating in synchronization with the power receiving member 31.
The power transmission member 32 is provided with the second clutch portion 323, and the second clutch portion 323 and the gear portion 321 may be integrally formed or may be assembled separately. The second clutch portion 323 has one or more second engaging claws 3234, and the first clutch portion 35 correspondingly has one or more first engaging claws 352, and when the first clutch portion 35 and the second clutch portion 323 are engaged, the first engaging claws 352 and the second engaging claws 3234 can be engaged with each other to transmit power. The first clutch part 35 is disposed outside the second clutch part 323 (i.e., on the side of the second clutch part 323 away from the frame 1) in the longitudinal direction of the connecting rod part 312.
The driving assembly 3 further comprises an elastic element 33 disposed between the first clutch part 35 and the second clutch part 323, and the elastic element 33 is preferably a spring sleeved on the connecting rod part 312. The elastic element 33 is used to apply an elastic force to the first clutch part 35 to separate the first clutch part 35 from the second clutch part 323, and when the first clutch part 35 is separated from the second clutch part 323, the power receiving member 31 can rotate freely.
The driving assembly 3 further includes a pressing member 34 provided at the driving end, the pressing member 34 being rotatable about the first pivot 341. Wherein the first pivot 341 may be disposed on the driving end cap 5 and disposed perpendicular to the connection rod part 312.
The pressing member 34 is used to apply a pressing force to the first clutch part 35 to engage the first clutch part 35 with the second clutch part 323 against the elastic force of the elastic element 33. Specifically, the pressing member 34 includes a pressing end 342 and an abutted end 343 respectively provided on both sides of the first pivot 341, and when the pressing end 342 is rotated in the direction of the first clutch part 35, the pressing end 342 applies a pressing force to the first clutch part 35 to engage the first clutch part 35 with the second clutch part 323.
Further, the driving assembly 3 may further include a pressure plate member 36, and the pressure plate member 36 is at least translatably sleeved on the connecting rod portion 312 and located outside the first clutch portion 35. Wherein the platen member 36 has a guide groove 361 slidably fitted with the guide projection 314 of the connection lever portion 312 so as to be able to translate along the connection lever portion 312. The pressing end 342 of the pressing member 34 abuts against the pressure plate member 36, and applies a pressing force to the first clutch part 35 via the pressure plate member 36 to engage the first clutch part 35 with the second clutch part 323. Preferably, the pressing end 342 is disposed to partially surround the connection rod portion 312, for example, in an approximately semicircular configuration.
Further, the driving end of the cartridge is also provided with a movable member 37, and the movable member 37 is arranged to rotate about a second pivot 371, the second pivot 371 being perpendicular to the first pivot 341. As described in detail later, the movable member 37 is driven by the urging portion of the electrophotographic image forming apparatus to rotate between the first position and the second position, and when the movable member 37 rotates from the first position to the second position, the movable member 37 drives the pressing member 34 to rotate about the first pivot 341, and the pressing member 341 applies a pressing force to the first clutch portion 35 to engage the first clutch portion 35 with the second clutch portion 323.
Specifically, the movable member 37 has a force-receiving end 372 and an abutment end 373 provided on both sides of the second pivot 371. The abutting end 373 has a first abutting inclined surface 3731 provided obliquely to the first pivot 341 and the second pivot 371, and the abutted end 343 of the pressing member 34 has a second abutting inclined surface 3431 provided obliquely to the first pivot 341 and the second pivot 371. When the movable member 37 rotates from the first position to the second position, the first abutment slope 3731 abuts against the second abutment slope 3431, so that the pressing member 34 rotates about the first pivot 341 and the pressing end 342 pushes the platen member 36 to move during the rotation.
As shown in fig. 5 to 8, at the time of image forming operation, the urging portion 100 of the electrophotographic image forming apparatus is moved in the direction of M1, the urging portion 100 applies a pushing force to the force receiving end 372, the movable member 37 is rotated in the direction of R1 about the second pivot 371, and is rotated from the first position (see fig. 5) to the second position (see fig. 7), in which the first abutting inclined surface 3731 and the second abutting inclined surface 3431 abut against each other, the pressing member 34 is rotated in the direction of R2, the pressing end 342 of the pressing member 34 is rotated in the direction of the platen member 36 (see fig. 6), the pressing end 342 continues to push the platen member 36 to move in the L direction as it is rotated, so that the platen member 36 pushes the first clutch portion 35 to slide in the direction of the second clutch portion 323, the elastic element 33 is gradually compressed until the first clutch portion 35 slides to a position where it engages with the second clutch portion 323, at which time the driving head of the image forming apparatus can drive the power receiving member 31 and the, the cartridge can stably receive the rotational driving force. As shown in fig. 8, when the movable member 37 rotates to the second position about the second pivot 371, the first abutment slope 3731 and the second abutment slope 3431 are separated, but the abutment end 373 and the abutted end 343 are still in abutment, and the pressing member 34 keeps pressing the platen member 36.
It is easily understood that, when the urging portion 100 of the electrophotographic image forming apparatus is moved in the direction M2 opposite to the direction M1 to rotate the movable member 37 about the second pivot 371 from the second position to the first position, the movable member 37 no longer transmits a force to the pressing member 34, the pressing member 34 no longer applies a pressing force to the first clutch portion 35, and the first clutch portion 35 and the pressure plate member 36 slide in a direction away from the second clutch portion 323 to the initial position by the elastic element 33, the first clutch portion 35 is separated from the second clutch portion 323, and the power receiving member 31 can freely rotate in the circumferential direction.
Also, in the process of mounting and removing the developing cartridge to and from the electrophotographic image forming apparatus, the first clutch part 35 and the second clutch part 323 are in the disengaged state due to the elastic force exerted by the elastic member 33, and the power receiving member 31 can freely rotate in the circumferential direction without interfering with the driving head of the electrophotographic image forming apparatus, so that the process of mounting and removing the developing cartridge can be smoothly performed.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that changes may be made without departing from the scope of the invention, and it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
Claims (10)
1. A cartridge for an electrophotographic image forming apparatus includes a drive assembly and a drive end cap at a drive end thereof; wherein the drive assembly comprises:
a power receiving member having a power receiving portion and a connecting rod portion; a first clutch part is slidably sleeved on the connecting rod part and is arranged to rotate synchronously with the power receiving component;
a power transmission member rotatably connected to the connection rod portion; the power transmission member has a second clutch portion;
an elastic element disposed between the first clutch part and the second clutch part, for applying an elastic force to the first clutch part to separate the first clutch part from the second clutch part;
and a pressing member provided at the driving end portion rotatably about a first pivot shaft, for applying a pressing force to the first clutch portion to engage the first clutch portion with the second clutch portion.
2. A cartridge for an electrophotographic image forming apparatus according to claim 1, wherein the first clutch portion is provided outside the second clutch portion in a length direction of the connecting lever portion.
3. A cartridge for an electrophotographic image forming apparatus according to claim 1, wherein the first pivot shaft is provided on the drive-end cover and is provided perpendicularly to the connecting lever portion.
4. A cartridge for an electrophotographic image forming apparatus according to claim 1, wherein said driving assembly further includes a platen member which is fitted over said connecting rod portion at least in a translatable manner; the pressing member abuts against the pressure plate member, and applies a pressing force to the first clutch portion via the pressure plate member to engage the first clutch portion with the second clutch portion.
5. A cartridge for an electrophotographic image forming apparatus according to claim 4, wherein the pressing member has a pressing end partially surrounding the connection lever portion, the pressing end abutting against the platen member.
6. A cartridge for an electrophotographic image forming apparatus according to claim 1, wherein said driving end portion is further provided with a movable member that is driven by the electrophotographic image forming apparatus to move between a first position and a second position; when the movable member moves from the first position to the second position, the movable member drives the pressing member to rotate about the first pivot shaft, and the pressing member applies a pressing force to the first clutch portion to engage the first clutch portion with the second clutch portion.
7. A cartridge for an electrophotographic image forming apparatus according to claim 6, wherein the movable member is provided so as to rotate about a second pivot axis, the second pivot axis being perpendicular to the first pivot axis; an abutment slope is formed between the movable member and the pressing member, the abutment slope being disposed obliquely with respect to the first pivot shaft and the second pivot shaft.
8. A cartridge for an electrophotographic image forming apparatus according to claim 1, wherein the connection lever portion has an annular groove, and a click projection is provided on the power receiving member; the clamping convex part is inserted into the annular groove and can rotate along the annular groove.
9. A cartridge according to claim 1, wherein a guide groove is provided on said first clutch portion, and a guide projection is provided on said connecting rod portion, said guide projection being slidably fitted with said guide groove in a length direction of said connecting rod portion.
10. A cartridge for an electrophotographic image forming apparatus according to claim 1, wherein the power transmission member includes a gear portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110272349.0A CN112859562A (en) | 2021-03-12 | 2021-03-12 | Cartridge for electrophotographic image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110272349.0A CN112859562A (en) | 2021-03-12 | 2021-03-12 | Cartridge for electrophotographic image forming apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112859562A true CN112859562A (en) | 2021-05-28 |
Family
ID=75994373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110272349.0A Pending CN112859562A (en) | 2021-03-12 | 2021-03-12 | Cartridge for electrophotographic image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112859562A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206133188U (en) * | 2016-05-24 | 2017-04-26 | 珠海联合天润打印耗材有限公司 | Drive assembly and development cartridge |
| CN107918263A (en) * | 2016-10-06 | 2018-04-17 | 江西亿铂电子科技有限公司 | Handle box with drive component |
| CN110874045A (en) * | 2018-08-29 | 2020-03-10 | 江西亿铂电子科技有限公司 | Processing box |
| CN214225685U (en) * | 2021-03-12 | 2021-09-17 | 珠海联合天润打印耗材有限公司 | Cartridge for electrophotographic image forming apparatus |
-
2021
- 2021-03-12 CN CN202110272349.0A patent/CN112859562A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206133188U (en) * | 2016-05-24 | 2017-04-26 | 珠海联合天润打印耗材有限公司 | Drive assembly and development cartridge |
| CN107918263A (en) * | 2016-10-06 | 2018-04-17 | 江西亿铂电子科技有限公司 | Handle box with drive component |
| CN110874045A (en) * | 2018-08-29 | 2020-03-10 | 江西亿铂电子科技有限公司 | Processing box |
| CN214225685U (en) * | 2021-03-12 | 2021-09-17 | 珠海联合天润打印耗材有限公司 | Cartridge for electrophotographic image forming apparatus |
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