CN216526747U

CN216526747U - Developing box

Info

Publication number: CN216526747U
Application number: CN202123277719.4U
Authority: CN
Inventors: 王朋; 林东明
Original assignee: Zhuhai Yuzhi Technology Co ltd
Current assignee: E Jet Technology Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-13
Anticipated expiration: 2031-12-22

Abstract

The present invention relates to a developing cartridge detachably mountable in an image forming apparatus provided with a detected member, the developing cartridge including a casing, a plurality of rotary members rotatably mounted in the casing, and a driving force receiving member and a conductive member at ends of the casing; the rotating member extends in a first direction; a driving force receiving member for receiving a driving force from the image forming apparatus and transmitting the driving force to the rotating member, and a conductive member for receiving power from the image forming apparatus to be supplied to at least a part of the rotating member; the driving force receiving member rotates in a direction parallel to the first direction, and the developing cartridge further includes an end cap disposed on the same side as the conductive member, and when the conductive member moves in a direction away from the casing in the first direction, the end cap is not located on a movement path of the conductive member, so that the conductive member can be smoothly removed and replaced.

Description

Developing box

Technical Field

The present invention relates to the field of electrophotographic image forming, and more particularly, to a developing cartridge detachably mountable in an electrophotographic image forming apparatus.

Background

There is a developing cartridge provided with a counter member and a driving force receiving member which are provided at an end portion of a housing of the developing cartridge, the driving force receiving member transmitting a driving force received from an image forming apparatus to the counter member so that the counter member interacts with a detected part in the image forming apparatus, and thus, information of a model, a service life, and the like of the developing cartridge is known by the image forming apparatus.

Generally, a driving force is transmitted from a driving force receiving member to a counting member by way of providing a gear in a developing cartridge, and at the same time, the developing cartridge is further provided with a conductive member for receiving electric power from an image forming apparatus, through which a rotating member such as a developing member, a powder feeding member, etc., rotatably mounted in a developing cartridge casing, can obtain electric power, and an end cap for preventing the gear from falling off, at least a part of the gear being covered with the end cap, the conductive member being exposed from the end cap.

SUMMERY OF THE UTILITY MODEL

In fact, the accident that the incoming material of the conductive piece is bad or the conductive piece is damaged in the assembling process is inevitable, in order to replace the conductive piece, the end cover needs to be detached first, then the conductive piece is replaced, and finally the end cover is installed, so that the process not only wastes labor hour, but also easily causes damage to other parts of the developing box in the process of detaching the end cover and installing the end cover again.

In view of the above, the present invention provides a developing cartridge convenient for replacing a conductive member, and the specific scheme is as follows:

a developing cartridge detachably mounted in an image forming apparatus provided with a detected member, the developing cartridge including a housing, a plurality of rotating members rotatably mounted in the housing, and a driving force receiving member and a conductive member at an end of the housing; the rotating member extends in a first direction; a driving force receiving member for receiving a driving force from the image forming apparatus and transmitting the driving force to the rotating member, and a conductive member for receiving power from the image forming apparatus to be supplied to at least a part of the rotating member; the driving force receiving member rotates in a direction parallel to the first direction, and the developing cartridge further includes an end cap disposed on the same side as the conductive member, the end cap not being located on a movement path of the conductive member when the conductive member moves in a direction away from the casing in the first direction.

The developing cartridge further includes a counting member which is capable of interacting with the detected member, and the counting member is not located on a path along which the conductive member moves away from the casing in the first direction.

As one of the embodiments, the conductive member is integrally formed of a conductive material, and includes a conductive body, an electrical contact for receiving power from the image forming apparatus, and a connection member for connecting the conductive body and the electrical contact, which are combined with each other; the electrical contact overlaps the counter element in a second direction perpendicular to the first direction in which the connecting element is further from the housing than the electrical contact.

The developing cartridge further includes a driving force transmitting member for transmitting the driving force of the driving force receiving member to the counting member, and the electrical contact member is farther from the casing than the driving force transmitting member in the first direction.

As another embodiment, the conductive member includes a conductive body made of a non-conductive material, and a conductive steel sheet mounted on the conductive body, the conductive steel sheet being directly transferred to at least a portion of the rotating member after receiving power from the image forming apparatus.

The conductive main body is provided with a through hole, the rotating shaft of at least one part of the rotating piece is exposed through the through hole, and the conductive steel sheet is abutted against the rotating shaft through the through hole; the developing cartridge further includes a driving force transmitting member for transmitting the driving force of the driving force receiving member to the counting member, and the conductive steel sheet is farther from the casing than the driving force transmitting member in the first direction.

Drawings

Fig. 1 is a perspective view of a developing cartridge according to an embodiment of the present invention.

Fig. 2 is an exploded view of a conductive terminal of the developing cartridge according to an embodiment of the present invention.

Fig. 3 is a side view as viewed in a direction perpendicular to both the first direction and the second direction of the developing cartridge relating to the first embodiment of the present invention.

Fig. 4 is an exploded view of the conductive terminal of the developing cartridge according to the second embodiment of the present invention.

Fig. 5 is a side view as viewed in a direction perpendicular to both the first direction and the second direction of the developing cartridge relating to the second embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[ example one ]

Fig. 1 is a perspective view of a developing cartridge according to an embodiment of the present invention; FIG. 2 is an exploded view of a conductive terminal of the developing cartridge according to an embodiment of the present invention; fig. 3 is a side view as viewed in a direction perpendicular to both the first direction and the second direction of the developing cartridge relating to the first embodiment of the present invention.

For convenience of description, the length direction of the developing cartridge 10 is defined as a left-right direction/a first direction, the mounting direction is defined as a front-rear direction/a second direction, the developing cartridge 10 is mounted forward and removed backward, the first direction is perpendicular to the second direction, the left side of the mounting direction is the left side, and the right side of the mounting direction is the right side, with respect to the viewing angle when the developing cartridge 10 is mounted.

The developing cartridge 10 includes a housing 1 accommodating toner, a rotary member 2 rotatably mounted in the housing, and an end cap 8, a driving force receiving member 3, a counter member 4, and a conductive member 5 provided at an end of the housing, a part of the counter member 4 being exposed through the end cap 8, the rotary member 2 being rotatable about a rotation axis parallel to a first direction, the driving force receiving member 3 being capable of receiving a driving force from an image forming apparatus and transmitting the driving force to the counter member 4 when the developing cartridge 10 is detachably mounted to the image forming apparatus, the conductive member 5 being capable of receiving electric power from the image forming apparatus, the counter member 4 interacting with a detected member in the image forming apparatus, and thus, a side of the driving force receiving member 3 is also referred to as a driving end 10a, a side of the conductive member 5 is also referred to as a conductive end 10b, the counter member 4 being provided at both the driving end 10a and the conductive end 10b, the driving force receiver 3 transmits the driving force to the counter member 4 through the driving force transmission assembly 6 provided in the developing cartridge 10.

As shown in fig. 2, conventionally, the rotary member 2 includes a developing member 2a for conveying toner to the outside, a toner feeding member 2b for conveying toner to the developing member, and an agitating member 2c for agitating toner in the housing 1, and in the present invention, described by taking the case where the counting member 4 is disposed on the same side as the conductive member 5, the driving force of the driving force receiving member 3 is transmitted from the driving end 10a to the conductive end 10b through the agitating member 2c, and then transmitted to the counting member 4 through a first driving force transmitting member 61 and a second driving force transmitting member 62 as a part of the driving force transmitting assembly 6, wherein the first driving force transmitting member 61 and the second driving force transmitting member 62 are coupled to each other. Usually, the first driving force transmission member 61 and the second driving force transmission member 62 are both gears or ratchets or two protrusions combined with each other, it is understood that the number of the driving force transmission members can be adjusted according to the position, the rotating speed, the rotating direction and other parameters of the counting member 4.

The conductive member 5 is fixed to the housing 1 by means of a screw or a snap, and in this embodiment, the conductive member 5 is integrally formed of a conductive material, and includes a conductive body 51, an electrical contact 55, and a connecting member 56, which are combined with each other, the electrical contact 55 is used for receiving power from the image forming apparatus, and the connecting member 56 is used for connecting the conductive body 51 and the electrical contact 55, so that power is supplied to the developing member 2a and the powder feeding member 2b through the conductive body 51; further, the conductive member 5 further includes a first mounting portion 57 to which the rotary shaft of the developing member 2a is mounted and a second mounting portion 58 to which the rotary shaft of the powder feeding member 2b is mounted, and the first mounting portion 57 and the second mounting portion 58 are commonly provided as mounting grooves or mounting holes that can accommodate the rotary shafts of the developing member and the powder feeding member.

As shown in fig. 3, in order to more clearly show the position of the conductive member 5, the end cap 8 is omitted, when the developing cartridge 10 is completely assembled, the connecting member 56 is located to the right of the counter member 4, the electric contact member 55 partially overlaps with the counter member 4 in the second direction, the connecting member 56 is located farther from the casing 1 than the electric contact member 55 in the first direction, and the electric contact member 55 is located farther from the casing 1 than both the first driving force transmission member 61 and the second driving force transmission member 62, so that the electric contact member 55 is less affected by the vibration of the first driving force transmission member 61 and the second driving force transmission member 62, particularly, the connecting member 56 is less affected, thereby facilitating the improvement of the stability of the conductive member 5 receiving the transmitted electric power.

Further, when the conductive member 5 moves rightwards along the first direction, at least the end cap 8 does not interfere with the conductive member, or when the conductive member moves away from the housing along the first direction, the end cap is not located on the moving path of the conductive member, preferably, the counting member 4 is not located on the moving path of the conductive member 5 away from the housing 1, so that when the conductive member 5 is damaged, an operator can quickly and conveniently replace the conductive member 5; furthermore, the connecting member 56 on the right side of the counting member 4 also serves to restrict the movement of the counting member 4 in a direction away from the housing 1; the counting lever of the counting member 4 can pass through the space between the electric contact 55 and the conductive body 51, and the electric contact 55 is located radially inside the counting lever in the radial direction of the counting member 4, so that the electric contact 55 does not affect the movement of the counting lever, and the electric contact 55 also functions to restrict the movement of the counting member 4 in the direction away from the housing 1.

[ example two ]

FIG. 4 is an exploded view of a conductive terminal of a developing cartridge according to a second embodiment of the present invention; fig. 5 is a side view as viewed in a direction perpendicular to both the first direction and the second direction of the developing cartridge relating to the second embodiment of the present invention.

The present embodiment was developed on the basis of the first embodiment, and the difference between the two embodiments is that at least a part of the conductive member 5 in the present embodiment is made of a non-conductive material, as shown in fig. 4, the electrical contact member 55 in the present embodiment is a conductive steel sheet, the conductive body 51 is made of a non-conductive material, and the first mounting portion 57 and the second mounting portion 58 are formed on the conductive body 51 in the form of through holes, so that the developing member rotating shaft and the powder feeding member rotating shaft can be exposed through the first mounting portion 57 and the second mounting portion 58, respectively; in the first direction, the electrical contact 55 is further away from the housing 1 than both the first drive force transmitter 61 and the second drive force transmitter 62.

The electric contact 55 is integrally formed, and includes an electric receiving portion 551 for receiving electric power, a first electric contact portion 552, and a second electric contact portion 553, the electric receiving portion 551 receives electric power from the image forming apparatus, and transmits to the first electric contact portion 552 and the second electric contact portion 553, the first electric contact portion 552 abuts against the developing member rotating shaft through the first mounting portion 57 to achieve electric connection therebetween, and the second electric contact portion 553 abuts against the powder feeding member rotating shaft through the second mounting portion 58 to achieve electric connection therebetween.

As a further variation of this embodiment, the electric receiving part 551 may also be located entirely on the right side of the end cap 8, and in this case, the end cap 8 will not interfere with the conductive member 5/the electric contact member 55 when it is necessary to replace it.

When the conductive member 5 in this embodiment needs to be replaced, at least the end cap 8 will not interfere with the conductive member 5 when the conductive member 5 moves to the right in the first direction, or when the conductive member moves away from the housing in the first direction, the end cap is not located on the moving path of the conductive member, preferably, the counting member 4 is not located on the moving path of the conductive member 5 away from the housing 1, so that the replacement of the conductive member 5 can be quickly completed; further, when only the electrical contact 55 in the conductive member 5 needs to be replaced, the electrical contact 55 can be successfully completed without interference from the end cap 8 and the counting member 4.

Claims

1. A developing cartridge detachably mounted in an image forming apparatus provided with a detected member, the developing cartridge including a housing, a plurality of rotating members rotatably mounted in the housing, and a driving force receiving member and a conductive member at an end of the housing;

the rotating member extends in a first direction;

a driving force receiving member for receiving a driving force from the image forming apparatus and transmitting the driving force to the rotating member, and a conductive member for receiving power from the image forming apparatus to be supplied to at least a part of the rotating member;

the driving force receiving member rotates about a direction parallel to the first direction,

the developing box is characterized by further comprising an end cover arranged on the same side as the conductive piece, and when the conductive piece moves away from the shell along the first direction, the end cover is not located on the moving path of the conductive piece.

2. A developing cartridge according to claim 1, further comprising a counting member which is capable of interacting with the detected member, and the counting member is not located on a path of the conductive member moving in a direction away from the casing in the first direction.

3. A developing cartridge according to claim 2, wherein the conductive member is integrally formed of a conductive material.

4. A developing cartridge according to claim 3, wherein the conductive member includes a conductive body, an electrical contact member for receiving power from the image forming apparatus, and a connecting member for connecting the conductive body and the electrical contact member, which are combined with each other.

5. A developing cartridge according to claim 4, wherein the electrical contact member partially overlaps the counter member in a second direction perpendicular to the first direction in which the connecting member is farther from the casing than the electrical contact member.

6. A developing cartridge according to claim 4 or 5, wherein the developing cartridge further comprises a driving force transmitting member for transmitting the driving force of the driving force receiving member to the counting member, and the electric contact member is farther from the casing than the driving force transmitting member in the first direction.

7. A developing cartridge according to claim 2, wherein the conductive member includes a conductive body made of a non-conductive material, and a conductive steel sheet mounted on the conductive body, the conductive steel sheet being directly transferred to at least a part of the rotary member after receiving the power from the image forming apparatus.

8. A developing cartridge according to claim 7, wherein the conductive main body is provided with a through hole through which the rotation shaft of said at least a part of the rotary member is exposed, and the conductive steel sheet is abutted with the rotation shaft through the through hole.

9. A developing cartridge according to claim 7 or 8, further comprising a driving force transmitting member for transmitting the driving force of the driving force receiving member to the counting member, wherein the conductive steel sheet is farther from the casing than the driving force transmitting member in the first direction.