WO2022052955A1

WO2022052955A1 - Developing cartridge

Info

Publication number: WO2022052955A1
Application number: PCT/CN2021/117240
Authority: WO
Inventors: 姜鹏; 刘小兵; 敖仕平
Original assignee: 江西亿铂电子科技有限公司
Priority date: 2020-09-09
Filing date: 2021-09-08
Publication date: 2022-03-17
Also published as: CN114236989A

Abstract

A developing cartridge, being detachably mounted in an imaging device, the imaging device being provided with a driving shaft, a detection body (50) and a power supply component. The developing cartridge comprises: a housing (1) provided with a developer accommodation portion (1a); a developing roller (2) being capable of rotating around an axis of the developing roller extending in the left-right direction, and provided on the front end side of the housing (1); a handle (3) provided on the rear end side of the housing (1) opposite to the front end side of the developing roller (2); a driving gear (4) provided on the left side end of the housing (1) in the left-right direction; an electrode (21) electrically connected to the developing roller (2) and provided with an electrical contact portion (21a) in electrical contact with the power supply component, the electrical contact portion (21a) being provided on the right side end of the housing (1) in the left-right direction; and a detected body (22) provided on the right side end of the housing (1) and capable of being detected by the detection body (50); in the front-rear direction connecting the developing roller (2) and the handle (3), the developing roller (2), the electrical contact portion (21a) and the detected body (22) are arranged in sequence; and the detected body (22) moves at least in the up-down direction, and the up-down direction intersect both the left-right direction and the front-rear direction.

Description

a developing cartridge

technical field

The present invention relates to a developing cartridge detachably mounted in an image forming apparatus which is an electrophotographic image forming apparatus.

Background technique

A developing cartridge is known in the art, for example, Chinese Patent Publication No. CN205450563U, which is provided with a component to be detected, the component to be detected has protrusions, and a detection unit is provided in the image forming apparatus. Specifically, when the developing cartridge is installed in the image forming apparatus and the developing cartridge subsequently receives a driving force from the image forming apparatus, the detected member rotates. The rotation of the detected member displaces the protrusion between a contact state in which the protrusion contacts the detection unit and a non-contact state in which the protrusion does not contact the detection unit. Such displacement of the protrusions between the contact state and the non-contact state or the number of the protrusions indicates the specification of the developing cartridge.

SUMMARY OF THE INVENTION

The present invention further develops the prior art. One aspect of the present invention provides a developing cartridge. The toggle member of the developing cartridge can also move the detection body in the image forming apparatus without rotating and moving to indicate the size of the developing cartridge. function. Another aspect of the present invention provides a more compact developing cartridge.

The present invention is achieved through the following technical solutions:

A developing cartridge is detachably installed in an image forming apparatus, the image forming apparatus has a drive shaft, a detection body and a power supply component, and the developing cartridge includes:

a housing having a developer accommodating portion;

a developing roller, which is rotatable around the axis of the developing roller extending in the left-right direction, and is provided on the front end side of the housing;

a handle, disposed on the rear end side of the casing opposite to the front end side where the developing roller is located;

a driving gear, arranged on the left end of the casing in the left-right direction;

an electrode electrically connected to the developing roller, which has an electrical contact portion that is in electrical contact with the power supply member, the electrical contact portion being provided at the right end of the housing in the left-right direction;

The detected body is arranged at the right end of the casing and can be detected by the detected body;

In the front-rear direction connecting the developing roller and the handle, the developing roller, the electrical contact portion, and the object to be detected are arranged in order, and the object to be detected moves at least in the up-down direction, the up-down direction The direction crosses both the left-right direction and the front-rear direction.

Preferably, it also includes a side cover installed on the right side end of the casing, and the detected object is mounted on the side cover and can slide relative to the side cover.

Preferably, it also includes a second transmission member disposed on the right end side of the housing, the second transmission member moves at least in the left-right direction and urges the detected object to move at least in the up-down direction.

Preferably, it also includes a stirring frame shaft and a first transmission member, the first transmission member and the stirring frame shaft are coaxially arranged, and the first transmission member drives the second transmission member to move at least in the left and right directions.

Preferably, the second transmission member is provided with a pressing portion, the detected body is provided with a pressed portion, and the pressed portion includes a first pressed portion and a second pressed portion, A recessed portion is provided between the first pressed portion and the second pressed portion.

Preferably, it further includes a first transmission member that transmits driving force to the second transmission member, and the first transmission member drives the second transmission member to move at least in the left-right direction through rotation.

Preferably, it further includes a first transmission member disposed on the right side end of the housing, and the first transmission member is configured as a screw for transmitting driving force to the detected body.

Preferably, the developing cartridge further comprises a stirring frame shaft, an elastic member is installed on the side of the stirring frame shaft close to the left end of the casing, one end of the elastic member abuts the casing, and the other end abuts on the casing. the stirrer shaft.

Preferably, the detected object can slide between a toggle position where the detected object is moved and a non-toggle position where the detected object is not toggled. When the detected object is in the toggle position, The electrical contact portion is out of contact with the power supply member, and when the object to be detected is in a non-toggle position, the electrical contact portion is in contact with the power supply member.

Preferably, the detected object is disposed adjacent to the electrical contact portion, and in the front-rear direction, the distance between the connecting line between the toggle contact portion where the detected object is in contact with the detection object and the electrical contact portion is less than the length of the sample.

After adopting the above technical solution, a new developing cartridge detected component is provided, which adopts the spiral groove structure design to transmit the driving force. Compared with the existing gear transmission structure, the spiral groove transmission structure has a smaller space, so , the developing cartridge can be made thinner and smaller, and at the same time, the toggle piece is designed adjacent to the developing cartridge electrode, which can further reduce the size of the developing cartridge.

Description of drawings

1 is a schematic three-dimensional structure diagram of a developing cartridge provided in Embodiment 1 of the present invention;

Fig. 2 is the perspective structure schematic diagram of the developing cartridge provided by Embodiment 1 of the present invention from another perspective;

Fig. 3 is the partial exploded structure schematic diagram of the conductive side in the developing cartridge provided by Embodiment 1 of the present invention;

4 is a schematic diagram of the exploded structure of the developing cartridge provided in Embodiment 1 of the present invention after the upper cover is removed;

5 is a schematic view of the installation and disassembly structure of the developing cartridge toggle and the side cover provided in Embodiment 1 of the present invention;

6 is a schematic structural diagram of the second transmission member of the developing cartridge provided in Embodiment 1 of the present invention when it is located at the first position;

7 is a schematic structural diagram of the second transmission member of the developing cartridge provided in Embodiment 1 of the present invention when it is located at the second position;

8 is a schematic structural diagram of the second transmission member of the developing cartridge provided in Embodiment 1 of the present invention when it is located at a third position;

9 is a schematic diagram of a partial structure of the conductive side of the developing cartridge provided in Embodiment 2 of the present invention;

FIG. 10 is a schematic diagram of a partial exploded structure of the developing cartridge provided in Embodiment 3 of the present invention.

detailed description

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 only used to explain the present invention, but not to limit the present invention.

Example 1

First, as shown in FIGS. 1 to 4, the developing cartridge of the present invention is detachably installed in the image forming apparatus. The developing cartridge includes a casing 1 , a developing roller 2 , a handle 3 , a driving gear 4 , an electrode 21 and a toggle member 22 . The casing 1 has a developer accommodating portion 1a that can accommodate the developer. The developing roller 2 is rotatably supported by the housing 1. The developing roller 2 extends in the left-right direction, and rotates around the rotation axis extending along the left-right direction. The installation direction of the developing cartridge is defined as the front-rear direction. On the front end side in the installation direction, the handle 3 is provided on the rear end side in the installation direction of the developing cartridge. The installation direction of the developing cartridge, that is, the front-rear direction is perpendicular to the left-right direction. The side of the developing cartridge where the driving gear 4 is located is the driving side 10 of the developing cartridge, and the driving side 10 is located at the left end of the casing 1 in the left-right direction. The electrode 21 is electrically connected to the developing roller shaft, the electrode 21 has an electrical contact surface 21a which is in electrical contact with the power supply components in the image forming apparatus, and the side where the electrical contact surface 21a is located is the conductive side 20 of the developing cartridge , In the left and right direction, the guide side 20 is arranged opposite to the driving side 10 , and the driving side 10 and the conductive side 20 are respectively located at two side ends of the casing 1 in the left and right direction. The toggle member 22 is used to toggle the detection body 50 (refer to FIG. 6 ) in the imaging device to output information such as whether the developing cartridge is a new cartridge and the yield of the developing cartridge page to the imaging device, that is, as a dial of the detected object. The moving member 22 can be detected by the imaging device. The toggle member 22 is located on the conductive side 20 of the developing cartridge, and is disposed apart from the electrical contact surface of the electrode 21 .

The driving side 10 includes a driving gear 4 , a developing roller gear 5 and a stirring frame gear 6 , the driving gear 4 is engaged with the drive shaft in the image forming apparatus to receive the driving force, the developing roller gear 5 is in contact with and meshed with the driving gear 4 , and the stirring frame gear 6 Contact and mesh with the drive gear 4 . One end of the stirrer shaft 7 is connected to the stirrer gear 6 and is driven to rotate by the stirrer gear 6 , and the other end of the stirrer shaft 7 is connected with a first transmission member 24 . A second transmission member 23 and a toggle member 22 are also provided on the conductive side 20 of the developing cartridge. The first transmission part 24 and the second transmission part 23 are engaged, and the first transmission part 24 and the second transmission part 23 are not arranged coaxially. The transmission part 24 and the second transmission part 23 are driven by screws, but it is not limited to this, and other transmission methods can also be used. The structure of the circumferentially extending oblique grooves matched with the diagonal ribs can also realize power transmission. The second transmission member 23 and the toggle member 22 together constitute the detected component of the developing cartridge, and the first transmission component 24 is used to transmit the driving force to the detected component. The second transmission member 23 , the first transmission member 24 and the toggle member 22 are all disposed on the conductive side 20 of the developing cartridge. The other end of the stirring frame shaft 7 is connected with the first transmission member 24 , and the first transmission member 24 is coaxially arranged with the stirring frame shaft 7 . The first transmission member 24 is provided with a stirring frame shaft engaging portion 24c, which is axially meshed with the stirring frame shaft 7, and the elastic member 8 is arranged on the driving side 10 of the stirring frame shaft 7, and one end of which is in contact with the housing. 1. The other end abuts the stirring frame shaft 7, which is used to force the stirring frame shaft 7 to move toward the conductive side 20. The stirring frame shaft 7 can axially move a certain distance in the developer accommodating portion 1a. This design is for convenience. In the reset action of the second transmission part 23, since the stirring frame shaft 7 cannot be reversed, when the first transmission part 24 needs to be reset, a rod can be used to pass through the through hole provided in the first transmission part 24 in the axial direction (not shown in the figure), use this rod to push the stirring frame shaft 7 to retract to the driving side 10 side, so that the first transmission part 24 and the stirring frame shaft 7 are disengaged, and then reverse the first transmission part 24 to reset The second transmission part 23 . This structure can reset the first transmission member 24 and the second transmission member 23 without any disassembly action of the developing cartridge, which is simple and convenient, and avoids the need to remove the side cover of the developing cartridge and other components to reset the detected developing cartridge. unit, resulting in assembly errors caused by reassembly.

When the developing cartridge of this embodiment is installed, the distal end of the conductive side 20 of the stirring frame shaft 7 remains inside the developer accommodating portion 1a, and the first transmission member 24 passes through the side wall of the housing 1 from the outside of the developer accommodating portion 1a and Insert or sleeve into the end of the stirring frame shaft 7, a sealing ring 27 is sleeved on the slot 24b of the first transmission part 24 and is installed on the casing 1 together with the first transmission part 24 to prevent the first transmission part 24. The developer leaks outward from the developer accommodating portion 1a upon rotation. The second transmission part 23 is installed on the installation column 1b of the conductive side 20 of the housing 1, the installation column 1b is provided with a D-shaped column, and the second transmission part 23 is provided with a D-shaped port matched with the D-shaped column, With the above configuration, the rotation of the second transmission member 23 is restricted by the mounting column 1b. The second transmission part 23 has a spiral protrusion 23b. Preferably, in order to simplify the manufacturing process, specifically, in order to simplify the process structure of the metal mold for making the second transmission part 23, the spiral protrusion 23b is configured to have a part in the middle There is no missing part of the helical protrusion, and the missing part does not need to be made into a structure with a threaded protrusion, which simplifies the processing technology of the metal mold and reduces the processing precision requirements.

A side cover 26 is installed on the conductive side 20 of the developing cartridge. The side cover 26 can cover at least a part of the component to be tested to protect the component to be tested. The toggle member 22 is slidably disposed on the side cover 26 relative to the side cover 26. Preferably , the side cover 26 is provided with a pair of sliding guide rails 26b and a guide 26a located between the pair of sliding guide rails 26b, the toggle member 22 is provided with a pair of grooves 22a matched with the sliding guide rails 26b, and the grooves 22a are snapped into a pair of grooves 22a. The pair slides on the slide rail 26b along the slide rail 26b. The toggle member 22 further includes a toggle portion 22b and a pushed portion 22c. The toggle portion 22b is used to toggle the detection body 50 in the imaging device to move during the movement of the toggle member 22. When the second transmission member 23 moves , the pushing part 22c is pushed by the pushing part 23a provided on the second transmission member 23 to make the toggle member 22 move. The toggle member 22 is provided separately from the electrical contact portion 21 a of the electrode 21 . Preferably, the toggle member 22 is provided separately from the electrode 21 .

6 to 8 are schematic diagrams of a process in which the toggle member 22 in the developing cartridge toggles the detection body 50 in the image forming apparatus to be detected by the image forming apparatus. As shown in FIGS. 2-6 , after the driving gear 4 receives the driving rotation in the imaging device, the driving force will be transmitted to the first transmission part 24 through the stirring frame gear 6 and then through the stirring frame shaft 7 , and the first transmission part 24 will rotate. After that, the second transmission member 23 engaged with the first transmission member 24 is driven to move, and the second transmission member 23 cannot rotate under the restriction of the mounting column 1b, so that the second transmission member 23 protrudes to the right in the left-right direction, During the process of the second transmission member 23 extending to the right, the pressing slope 23a1 provided on the pressing portion 23a contacts the pressed slope 22c1 on the pressed portion 22c and exerts force, so that the toggle member 22 Move up in the up and down direction. Optionally, since the second transmission member 23 is provided with the pressing inclined surface 23a1, the pressed portion 22c on the toggle member 22 may not be provided with the pressed inclined surface 22c1. It should be understood that the moving direction of the second transmission member 23 does not need to completely overlap the left and right directions, it may be a movement along an angle with the left and right directions, and only the moving direction of the second transmission member 23 needs to have a component in the left and right directions, in other words, the second transmission The member 23 may be moved at least in the left-right direction, and similarly, the toggle member 22 may be moved at least in the up-down direction. In this embodiment, preferably, the second transmission member 23 moves in the left-right direction, and the toggle member 22 moves in the up-down direction, so as to better describe the detection process of the developing cartridge.

It should be noted that, since the detection body 50 in the imaging device itself has an elastic member (not shown in the figure) that returns, and the detection body 50 in the imaging device is also provided with a power supply component, the power supply component can supply power to the developing cartridge. When the developing roller 2 is powered, and the detection body 50 is moved while being toggled, the image forming apparatus will identify whether the detection body 50 is toggled through the electrical signal detection component connected to the power supply component. 6 is a schematic structural diagram of the second transmission member 23 in the first position. At this time, the toggle member 22 is in a non-toggle position where the detection body 50 is not toggled. 7 is a schematic structural diagram of the second transmission member 23 in the second position. At this time, the second transmission member 23 pushes the toggle member 22 to move upward, and the toggle member 22 is in the toggle position where the toggle detection body 50 moves. FIG. 8 is a schematic structural diagram of the second transmission member 23 in the third position. At this time, the toggle member 22 will move downward under the resilience of the detection body 50 and return to the non-toggled state where the detection body 50 is not toggled. Optionally, an elastic member can also be provided on the toggle member 22 to return the toggle member 22. The cancellation of the elastic member on the toggle member 22 can simplify the structure of the developing cartridge and reduce the manufacturing of the developing cartridge. cost. When the driving gear 4 receives the driving force and starts to drive the first transmission member 24 to rotate, the first transmission member 24 drives the second transmission member 23 to move from the first position to the second position and then to the third position. The second transmission member 23 pushes the toggle member 22 to move from the non-toggle position to the toggle position and back to the non-toggle position through the pushing portion 23a. When the toggle member 22 is in the non-toggle position, the power supply member on the detection body 50 contacts the electrical contact portion 21a of the electrode 21 to supply power to the developing roller 2 in the developing cartridge. The toggle member 22 is disposed adjacent to the electrical contact portion 21a. Specifically, in the front-rear direction, the connecting distance between the toggle contact portion where the toggle portion 22 contacts the detection body 50 and the electrical contact portion 21a is smaller than that of the detection body 50. length.

Example 2

Next, the second embodiment of the present invention will be introduced. In order to identify multiple types of developing cartridges, such as the page yield information of the developing cartridges, the image forming apparatus is usually designed so that the detection body 50 is toggled by the toggle member in the developing cartridge for different times. Identify different page yields in the developer cartridge. Therefore, there is a case where the developing cartridge needs to move the detection body many times. As shown in FIG. 9 , the difference between this embodiment and the first embodiment is that the toggle member 2201 is provided with a plurality of pressed parts, and the plurality of pressed parts include a first pressed part 2201c1 and a second pressed part The pushing portion 2201c2, a recessed portion 2201d is provided between the first pushed portion 2201c1 and the second pushed portion 2201c2, so that the toggle member can be returned from the toggle position to the non-toggle position to realize multiple toggles The number of the plurality of pressed parts is set according to different information on the page yield of the developing cartridge, and is not limited to two, but may be two or more. Optionally, the above structure can also be set in reverse. Specifically, only one pushed portion can be set on the toggle member 2201, and multiple pushing portions can be set on the second transmission member 23. The same multiple push parts can be set. The concave portion is arranged between the pressing portions so that the toggle member can return from the toggle position to the non-toggle position to realize the function of toggle the detection body multiple times.

Example 3

Next, Embodiment 3 of the present invention will be introduced. The difference between this embodiment and Embodiment 1 and Embodiment 2 is that in this embodiment, the combination of the first transmission component and the second transmission component is different. Specifically, as shown in FIG. 10 , in this embodiment, the first transmission part 2401 and the second transmission part 2301 are arranged coaxially, a protrusion 2401 a is arranged on the first transmission part 2401 , and a protrusion 2401 a is arranged on the second transmission part 2301 There is a helical groove 2301a, the second transmission part 2301 is sleeved on the first transmission part 2401, through the cooperation between the protrusion 2401a provided on the first transmission part 2401 and the helical groove 2301a provided on the second transmission part 2301, when the first transmission part 2301 When the transmission member 2401 rotates, the second transmission member 2301 moves in the left-right direction. Specifically, the housing 1 is also provided with an anti-rotation groove 1c, and the second transmission member 2301 is provided with an anti-rotation groove 1c that can be inserted into the rotation groove 1c. The rotation protrusion (not shown in the figure) restricts the rotation of the second transmission member 2301 through the cooperation of the anti-rotation protrusion and the anti-rotation groove, and the second transmission member 2301 can only move in the left-right direction but cannot rotate. During the movement of the second transmission member 2301 in the left-right direction, the detection body in the imaging device is toggled by pushing the toggle member 22 to move up and down.

The present invention provides a new developing cartridge detected component, which adopts the design of the spiral groove structure to transmit the driving force. Compared with the existing gear transmission structure, the spiral groove transmission structure has a smaller space. Therefore, the developing cartridge can be made Thinner and smaller, at the same time, the toggle member is designed to be adjacent to the electrode of the developing cartridge, which can further reduce the size of the developing cartridge.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A developing cartridge is detachably installed in an image forming apparatus, the image forming apparatus has a drive shaft, a detection body and a power supply component, and the developing cartridge includes:

a housing having a developer accommodating portion;

a developing roller, which is rotatable around the axis of the developing roller extending in the left-right direction, and is provided on the front end side of the housing;

a handle, disposed on the rear end side of the casing opposite to the front end side where the developing roller is located;

a driving gear, arranged on the left end of the casing in the left-right direction;

an electrode electrically connected to the developing roller, which has an electrical contact portion that is in electrical contact with the power supply member, the electrical contact portion being provided at the right end of the housing in the left-right direction;

The detected body is arranged at the right end of the casing and can be detected by the detected body;

It is characterized in that in the front-rear direction connecting the developing roller and the handle, the developing roller, the electrical contact portion, and the object to be detected are arranged in order, and the object to be detected moves at least in the up-down direction. , the up-down direction intersects with the left-right direction and the front-rear direction at the same time.
The developing cartridge according to claim 1, further comprising a side cover mounted on the right side end of the casing, and the object to be detected is mounted on the side cover and can be opposite to the side cover slide.
The developing cartridge according to claim 1, further comprising a second transmission member provided on the right end side of the housing, the second transmission member moving at least in the left-right direction and forcibly pushing the detected The body moves at least in the up-down direction.
The developing cartridge according to claim 3, further comprising a stirring frame shaft and a first transmission member, the first transmission member and the stirring frame shaft are coaxially arranged, and the first transmission member drives the second transmission member The transmission member moves at least in the left-right direction.
The developing cartridge according to claim 3, wherein the second transmission member is provided with a pressing portion, the detected body is provided with a pressed portion, and the pressed portion includes the first pressed portion. A pressing portion and a second pressed portion, and a recessed portion is provided between the first pressed portion and the second pressed portion.
The developing cartridge according to claim 3, further comprising a first transmission member that transmits a driving force to the second transmission member, and the first transmission member drives the second transmission member to rotate at least in the left and right directions. move in the direction.
The developing cartridge according to claim 1, further comprising a first transmission member provided at the right end of the housing, the first transmission member being configured to transmit driving to the object to be detected force of the screw.
The developing cartridge according to claim 1, wherein the developing cartridge further comprises a stirring frame shaft, and an elastic member is installed on the side of the stirring frame shaft close to the left end of the casing, and one end of the elastic member is against connected to the casing, and the other end abuts the shaft of the stirring frame.
The developing cartridge according to claim 1, wherein the detected body is slidable between a toggle position in which the detection body is moved by toggling and a non-toggle position in which the detection body is not toggled to move, When the object to be detected is in the toggle position, the electrical contact portion is out of contact with the power supply member, and when the object to be detected is in the non-toggle position, the electrical contact portion is in contact with the power supply member.
The developing cartridge according to claim 1, wherein the object to be detected is disposed adjacent to the electrical contact portion, and in the front-rear direction, the toggle contact portion where the object to be detected is in contact with the detection object and the The wire distance between the electrical contact parts is smaller than the length of the detection body.