CN107329384B - Developing box - Google Patents
Developing box Download PDFInfo
- Publication number
- CN107329384B CN107329384B CN201610276758.7A CN201610276758A CN107329384B CN 107329384 B CN107329384 B CN 107329384B CN 201610276758 A CN201610276758 A CN 201610276758A CN 107329384 B CN107329384 B CN 107329384B
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- Prior art keywords
- force receiving
- driving force
- gear
- driving
- arms
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0865—Arrangements for supplying new developer
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- General Physics & Mathematics (AREA)
- Accessories Of Cameras (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
The present invention relates to a developing cartridge. A process cartridge detachably mountable to an image forming apparatus includes a housing and a driving assembly provided at one side of the housing, the driving assembly including a pair of driving force receiving arms which are retractable, a slider which controls the driving force receiving arms to be retractable, the pair of driving force receiving arms being capable of expanding in a radial direction simultaneously when retracted. The technical problem that in the prior art, the power receiving part in the driving assembly has large impact in the process of disengaging from the driving head in the imaging device, so that the imaging device program is wrong is solved.
Description
Technical Field
The present invention relates to a developing cartridge, and more particularly, to a driving assembly of a developing cartridge.
Background
An image forming apparatus, or an electrophotographic image forming apparatus, an image forming apparatus, is an apparatus that forms an image on a recording material by an electrophotographic image forming principle. For example, electrophotographic copying machines, laser printers, electrophotographic printers (such as laser printers and LED printers), facsimile machines, word processors, and the like. An image forming apparatus generally includes a developing cartridge detachably provided to an image forming apparatus main body.
Generally, a developing roller is disposed on the developing cartridge, and the developing roller is provided with a driving assembly, which is engaged with a machine driving head in the image forming apparatus to drive the developing roller to rotate so as to drive the whole developing cartridge to operate. Chinese patent publication No. CN102419531A discloses a developing cartridge, which is mounted in an image forming apparatus having a disk-shaped mounting position, the disk mounting position of the image forming apparatus is divided into four independent spaces for mounting developing cartridges of 4 colors, the image forming apparatus has a photosensitive drum, the mounting disk drives each developing cartridge to rotate relative to the photosensitive drum during operation, thereby developing an electrostatic latent image on the photosensitive drum, and a driving assembly located at an axial end of the developing roller adopts a ball type universal joint engagement structure. The engagement structure is prone to disengagement from the drive assembly, which is particularly prone to occur during transport, and furthermore, the universal joint engagement structure is more difficult to engage with the machine drive head, thereby rendering the drive assembly functionally inoperative or unstable.
Chinese patent publication No. CN204883161U discloses a developing cartridge, which is also installed in an image forming apparatus having a disc-shaped installation position, wherein a driving assembly of the developing cartridge is configured to adopt a structure of a trigger lever and a slider to control the extension and retraction of a power receiving part, when the image forming apparatus switches developing cartridges of different colors, the extension and retraction of the power receiving part are used to realize the engagement and disengagement of the power receiving part and a driving head in the image forming apparatus, and in the actual use process, it is found that the power receiving part in the structure has a large impact in the process of disengaging from the driving head in the image forming apparatus, which results in unstable rotation of an installation disc in the image forming apparatus, and the switching program of the image forming apparatus is mistaken and cannot work normally.
Disclosure of Invention
The invention provides a developing box, which aims to solve the technical problems that in the prior art, a gear with missing teeth requires high machining precision and a formed die has high machining cost.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a developing cartridge comprising:
a shell body, a plurality of first connecting rods and a plurality of second connecting rods,
a gear disposed at one side of the housing;
a drive assembly including the gear;
the driving assembly comprises a telescopic mechanism and a control mechanism for controlling the telescopic mechanism to stretch;
the telescopic mechanism is characterized by comprising a force receiving component, an elastic component, a first driving force receiving arm and a second driving force receiving arm which are telescopic, a fixing piece (10) connected to the first driving force receiving arm (7a) and the second driving force receiving arm (7b), and a swinging rod controlling the relative movement of the first driving force receiving arm and the second driving force receiving arm, wherein the first driving force receiving arm and the second driving force receiving arm are expanded along the radial direction while being retracted.
The force receiving member of the telescopic mechanism is configured as a force receiving member rotatable relative to the first driving force receiving arm and the second driving force receiving arm, the control mechanism is configured as a slider capable of pressing the force receiving member, a pressing surface is arranged on the slider, and a force receiving surface matched with the pressing surface is arranged on the force receiving member.
The two swing links are configured in such a manner that opposite end portions of one of the two swing links are connected to the first driving force receiving arm and the gear, respectively, and opposite end portions of the other of the two swing links are connected to the second driving force receiving arm and the gear, respectively.
The elastic member is configured as a compression spring having one end abutting the fixing piece and the other end abutting the gear.
The fixing member is connected to the first and second driving force receiving arms by a latch, the first and second driving force receiving members have a rotation center that is relatively rotatable, and the latch is disposed coaxially with the rotation center.
The elastic member is configured as a torsion spring, and both arms of the torsion spring are configured as the swing lever.
With the above arrangement, the embodiment of the present invention utilizes a pair of retractable driving force receiving arms that can be simultaneously expanded in the radial direction when retracted. The technical problem that in the prior art, the power receiving part in the driving assembly has large impact in the process of disengaging from the driving head in the imaging device, so that the imaging device program is wrong is solved.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a perspective view of a developing cartridge provided by the present invention;
fig. 2 is a perspective view of a driving side in the developing cartridge provided by the present invention;
fig. 3 is an exploded perspective view of a driving assembly in the developing cartridge provided by the present invention;
fig. 4 is another exploded perspective view of the driving assembly in the developing cartridge provided in the present invention;
fig. 5 is an installation perspective view of a pressing spring in the telescopic mechanism in the developing cartridge provided by the present invention;
fig. 6 is a perspective view of a telescopic mechanism in the developing cartridge provided by the present invention;
fig. 7 is an exploded perspective view of a driving side in the developing cartridge provided by the present invention;
FIGS. 8 to 11 are process diagrams for engaging and disengaging a driving unit in a developing cartridge with and from a driving head in an image forming apparatus according to the present invention
Fig. 12 is a perspective view of another embodiment of a driving assembly in a developing cartridge provided in the present invention.
The specific implementation mode is as follows:
embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
First, as shown in fig. 1, the developing cartridge of the present invention comprises: a developing cartridge 1 has a casing 2, a developer is accommodated in the casing 2, and a driving unit 3 is provided at one side of the casing 2.
As shown in fig. 2, the driving assembly 3 includes: the telescopic mechanism 4, the support 6 and the push block 5.
As shown in fig. 3 to 6, the telescopic mechanism 4 of the present embodiment includes a first driving force receiving arm 7a, a second driving force receiving arm 7b, a latch 8, a force receiving member 9, a fixing member 10, a pair of swing levers 11, a pressure spring 12, and a gear 13. When mounted, the first driving force receiving arm 7a and the second driving force receiving arm 7b are inserted through the circular hole 9a of the force receiving member 9 and further into the inner void space of the fixing member 10, and the latch pin 8 is sequentially inserted through the first hole 10a of the fixing member 10, the rotation center hole 7a1 of the first driving force receiving arm 7a, the rotation center hole 7b1 of the second driving force receiving arm 7b, and the second hole 10b of the fixing member 10, so that the first driving force receiving arm 7a, the second driving force receiving arm 7b, the force receiving member 9, and the fixing member 10 are fixed as a whole by the latch pin 8. Alternatively, the manner of fixing the first driving force receiving arm 7a, the second driving force receiving arm 7b, the force receiving member 9, and the fixing member 10 as a whole is not limited to the manner of the latch 8, and a protrusion may be provided on one of the first driving force receiving arm 7a and the second driving force receiving arm 7b, a fitting hole may be provided on the other of the first driving force receiving arm 7a and the second driving force receiving arm 7b, and a hole that fits the protrusion may be provided on the fixing member 10, and the fixing of the first driving force receiving arm 7a, the second driving force receiving arm 7b, the force receiving member 9, and the fixing member 10 may also be achieved. The fixing member 10 is further provided at the bottom thereof with a receiving hole 10c and a stepped portion 10d, the spring 12 is fitted into the receiving hole 12 and stopped by the stepped portion 10d, the first driving force receiving arm 7a is provided with a boss 7a2, the second driving force receiving arm 7b is also provided with a boss 7b2, and the gear 13 is provided with a hollow portion 13b and a pair of protrusions 13 c. The integral piece fixed by the bolt 8 and provided with the spring 12 is arranged in the hollow part 13b of the gear 13, one end of one of the pair of swing rods 11 is hung on the convex column 7a2, the other end is hung on one of the pair of bulges 13c, and the other swing rod is arranged in the same way. Thus, the assembly of the telescopic mechanism 4 is completed. After the assembly is completed, one end of the spring 12 abuts on the bottom step 10d of the fixing member 10, and the other end abuts on the bottom inner wall of the gear 13.
As shown in fig. 7, the bracket 6 is provided with a positioning hole 6a, a guide groove 6b and a clearance hole 6 c; the pushing block 5 is provided with a pressing surface 5b and an external force receiving part 5 a; the housing 2 is provided with screw holes 2a disposed opposite to the positioning holes 6a on the bracket 6. The push block 5 is mounted to the bracket 6 through a guide groove 6b on the bracket. The telescopic mechanism including the gear 13 is mounted on one side end of the housing 2, and the positioning hole 6a of the bracket 6 is fixed to the screw hole 2a of the housing 2 by screws, but the fixing manner of the bracket 6 to the housing 2 is not limited to the screw fixing, and other fixing manners such as a heat welding manner may be adopted, and the clearance hole 6c may extend the power receiving portion of the telescopic mechanism 4.
As shown in fig. 8 to 11, when the process cartridge 1 is rotated in the image forming apparatus, the pushing block 5 in the process cartridge 1 is disposed in contact with an inner wall (not shown in the drawings) in the image forming apparatus at a specific position where the external force receiving portion 5a on the pushing block 5 is in contact with and urged by the inner wall to move in the direction of the rotation axis close to the driving force receiving arms 7a and 7b along the guide groove 6 on the bracket 6. During the movement of the push block 5, the pressing surface 5b provided thereon presses the force receiving surface 9b on the force receiving member 9 so that the force receiving member 9 moves in the direction approaching the gear 13 along the axial direction of the gear 13. The round hole 9a of the force receiving member 9 is arranged to be larger than the sum of the outer diameters of the first driving force receiving arm 7a and the second driving force receiving arm 7b and smaller than the outer diameter of the fixing member 10, such that the driving force receiving arms 7a and 7b and the force receiving member 9 rotate relatively, at the same time, the force receiving member 9 can drive the fixing member 10 to move together when moving towards the direction close to the gear 13, and the fixing member 10 can drive the driving force receiving arms 7a and 7b fixed integrally with the fixing member to move during moving, i.e. the driving force receiving arms 7a and 7b are telescopically arranged. Alternatively, the fixing member 10 may be configured as a radial protrusion formed on the first driving force receiving arm 7a and the second driving force receiving arm 7b, and the force receiving member 9 is mounted on the radial protrusion, and when the force receiving member 9 moves closer to the gear 13, the force receiving arms 7a and 7b are also driven to extend and retract; the slider 5 is used as a control mechanism to control the extension and retraction of the telescopic mechanism 3, but is not limited thereto, and other structures can be adopted, for example, chinese patent publication No. CN105137734A discloses a rope pulling scheme for controlling the extension and retraction of the telescopic mechanism, and the rope pulling scheme is connected to the bottom of the fixing member 10 in the present embodiment, so that the extension and retraction of the telescopic mechanism in the present embodiment can be controlled.
As shown in fig. 6 and 7, in order to make the force receiving surface 9b of the force receiving member 9 always face the pressing surface 5b of the slider 5, a D-shaped surface 9c is provided on the force receiving member 9, and a fitting D-shaped surface 6D fitted thereto is provided on the holder 6, and when the holder 6 is fixed to the process cartridge, the D-shaped surface 9c is restricted from rotating by the fitting D-shaped surface 6D on the holder 6.
The process of disengaging and engaging the process cartridge 1 with the driving head in the image forming apparatus when switching during printing will be described below with reference to fig. 8 to 11. In fig. 8 in which the driving force receiving arms 7a and 7b are supported by the elastic force of the spring 12 in the extended position, when the process cartridge 1 is driven by the mounting disk of the image forming apparatus to move to a position close to the driving head 14 in the image forming apparatus, the bottom arc of the driving head 14 first contacts the peripheral slope of the driving force receiving arm 7a or 7b, and the driving force receiving arms 7a and 7b are pressed downward so that the driving head 14 can pass over the tip claw portions of the driving force receiving arms 7a and 7 b. As shown in fig. 9, after the driving head 14 passes over the tip claw portions of the driving force receiving arms 7a and 7b, the driving force receiving arms 7a and 7b are extended by the compression spring 12 to be engaged with the driving head 14. When the process cartridge 1 needs to be switched to disengage, the mounting disk of the image forming apparatus continues to apply the rotational power to the process 1, and when the process cartridge 1 rotates along the mounting disk, the external force receiving portion 5a of the pushing block 5 provided on the process cartridge 1 is pressed by the inner wall of the image forming apparatus (not shown in the figure), moves toward the axial direction of the gear 13 and presses the force receiving member 10 to move toward the gear 13, thereby driving the fixing member 10 and the driving force receiving arms 7a and 7b connected to the fixing member 10 to retract. As shown in fig. 9 and 11, when the driving force receiving arms 7a and 7b are retracted along the approach gear 13, due to the connection between the driving force receiving arms 7a and 7b and the gear 13 by means of the swing link 11, such a configuration will cause the driving force receiving arms 7a and 7b to rotate along the axis of the latch 8 while being retracted toward the approach gear 13, and this embodiment is specifically configured that the driving force receiving tips of the power receiving arms 7a and 7b are in close contact when the driving force receiving arms 7a and 7b are in the extended position, and the driving force receiving tips of the power receiving arms 7a and 7b are expanded in the radial direction when the driving force receiving arms 7a and 7b are in the retracted position, so that the arrangement ensures that the driving unit 4 of the process cartridge 1 can be expanded toward both ends during disengagement from the driving head 14 in the image forming apparatus to avoid a dead-up state.
As shown in fig. 12, in order to further simplify the structure, it is also possible to eliminate the structure of the compression spring 12 and directly adopt the structure of the torsion spring 15, both ends of the torsion spring 15 are respectively connected to the driving force receiving arms 7a and 7b, and the bottom ends abut on the gear or the housing, such a configuration that the driving force receiving arms 7a and 7b can be protruded under the own elastic force of the torsion spring 15.
In the present embodiment, the extension and contraction of the driving force receiving arms 7a and 7b are controlled by the compression spring 12, but other elastic members such as elastic rubber may be used, and the technical effects of the present embodiment may be achieved.
While the invention has been described with reference to specific embodiments, various modifications can be made by those skilled in the art without departing from the scope of the invention.
The driving assembly of the developing cartridge in this embodiment can be expanded in the radial direction at the same time when retracted, by means of a pair of retractable driving force receiving arms. The technical problem that in the prior art, the power receiving part in the driving assembly has large impact in the process of disengaging from the driving head in the imaging device, so that the imaging device program is wrong is solved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. A developing cartridge comprising:
a shell (2) is arranged on the inner wall of the shell,
a gear (13) provided on one side of the housing (2);
a drive assembly (3) comprising said gear (13);
the driving assembly (3) comprises a telescopic mechanism (4) and a control mechanism for controlling the telescopic mechanism (4) to stretch;
characterized in that the telescopic mechanism (4) comprises a force receiving member (9), an elastic member, first and second telescopic drive force receiving arms (7a, 7b), a fixing member (10) connected to the first and second drive force receiving arms (7a, 7b), a swing lever (11) controlling the relative movement of the first and second drive force receiving arms (7a, 7b), the first and second drive force receiving arms (7a, 7b) being inserted into a circular hole of the force receiving member (9) and further into an inner void space of the fixing member (10), the force receiving member (9), the first and second drive force receiving arms (7a, 7b) being fixed as one piece with the fixing member (10) and being inserted into the gear (13), one end of the elastic component is abutted against a step part (10d) at the bottom end of the fixing piece (10), and the other end of the elastic component is abutted against the inner wall of the bottom of the gear (13);
a first convex column (7a2) is arranged on the first driving force receiving arm (7a), a second convex column (7b2) is arranged on the second driving force receiving arm (7b), and a hollow part (13b) and a pair of protrusions (13c) are arranged on the gear (13); the integral piece provided with the elastic component is arranged in the hollow part (13b) of the gear (13), one end of the swing rod (11) is hung on the first convex column (7a2), and the other end is hung on one of the pair of bulges (13 c);
the elastic component is configured as a compression spring (12) with one end abutting against the fixed piece (10) and the other end abutting against the gear (13);
the first drive force receiving arm (7a) and the second drive force receiving arm (7b) expand in a radial direction while retracting.
2. A developing cartridge according to claim 1, wherein said force receiving member (9) of said telescopic mechanism (4) is configured to be rotatable relative to said first driving force receiving arm (7a) and said second driving force receiving arm (7b), said control mechanism is configured as a slider (5) which can urge said force receiving member (9), said slider (5) is provided with a pressing surface (5b), and said force receiving member (9) is provided with a force receiving surface (9b) which is engaged with said pressing surface (5 b).
3. A developing cartridge according to claim 1, wherein said swing lever (11) is configured in two, and opposite end portions of one of said two swing levers (11) are connected to said first driving force receiving arm (7a) and said gear (13), respectively, and opposite end portions of the other of said two swing levers (11) are connected to said second driving force receiving arm (7b) and said gear (13), respectively.
4. A developing cartridge according to claim 1, wherein said fixing member (10) and said first and second driving force receiving arms (7a, 7b) are connected by a latch (8), said first and second driving force receiving arms (7a, 7b) having a rotation center relatively rotatable, said latch (8) being provided coaxially with said rotation center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610276758.7A CN107329384B (en) | 2016-04-29 | 2016-04-29 | Developing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610276758.7A CN107329384B (en) | 2016-04-29 | 2016-04-29 | Developing box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107329384A CN107329384A (en) | 2017-11-07 |
| CN107329384B true CN107329384B (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610276758.7A Active CN107329384B (en) | 2016-04-29 | 2016-04-29 | Developing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107329384B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201945803U (en) * | 2011-02-22 | 2011-08-24 | 珠海天威飞马打印耗材有限公司 | Rotary driving force receiving head and driving assembly |
| CN203811990U (en) * | 2014-03-17 | 2014-09-03 | 江西镭博钛电子科技有限公司 | Developing box |
| CN105093889A (en) * | 2014-04-16 | 2015-11-25 | 珠海艾派克科技股份有限公司 | Treatment box |
| JP2016027355A (en) * | 2014-03-06 | 2016-02-18 | 三菱化学株式会社 | End member, photoreceptor drum unit, developing roller unit, and process cartridge |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9091994B2 (en) * | 2013-08-13 | 2015-07-28 | General Plastic Industrial Co., Ltd. | Transmission device for photosensitive drum |
-
2016
- 2016-04-29 CN CN201610276758.7A patent/CN107329384B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201945803U (en) * | 2011-02-22 | 2011-08-24 | 珠海天威飞马打印耗材有限公司 | Rotary driving force receiving head and driving assembly |
| JP2016027355A (en) * | 2014-03-06 | 2016-02-18 | 三菱化学株式会社 | End member, photoreceptor drum unit, developing roller unit, and process cartridge |
| CN203811990U (en) * | 2014-03-17 | 2014-09-03 | 江西镭博钛电子科技有限公司 | Developing box |
| CN105093889A (en) * | 2014-04-16 | 2015-11-25 | 珠海艾派克科技股份有限公司 | Treatment box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107329384A (en) | 2017-11-07 |
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