CN210666358U

CN210666358U - Developing box

Info

Publication number: CN210666358U
Application number: CN201921406787.6U
Authority: CN
Inventors: 闻艺俊; 林颖婷
Original assignee: Zhuhai Tuojia Technology Co ltd
Current assignee: Zhuhai Tuojia Technology Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-06-02
Anticipated expiration: 2029-08-27

Abstract

The utility model relates to a developing box, which comprises a shell, a rotating piece rotatably arranged in the shell, a power receiving piece and a conductive component which are respectively positioned at two longitudinal ends of the shell, an end cover arranged at the same side of the conductive component, and a power transmission piece arranged at the same side of the conductive component; wherein the power receiving part is used for receiving driving force from the outside to drive the rotating part to rotate, and the conductive assembly is used for receiving electric power from the outside to supply the electric power to the rotating part; the power transmission member receives the driving force of the power receiving member to rotate about the rotation axis; a part of the conductive member is located outside the range of the power transmission member as viewed along the rotation axis, and thus, the conductive structure of the developing cartridge is more stable.

Description

Developing box

Technical Field

The present invention relates to an electrophotographic image forming apparatus, and more particularly to a developing cartridge detachably mountable to an electrophotographic image forming apparatus such as a printer or a copier.

Background

As is known, a developing cartridge needs to receive power from a printer after being mounted to the printer in order for relevant components in the developing cartridge to operate. An electrically conductive member provided in a conventional developing cartridge is integrally formed, and includes a mounting portion fixedly mounted to a housing of the developing cartridge and a shaft protruding from the mounting portion, a detecting member provided in the developing cartridge for cooperating with an external member to determine whether the developing cartridge is a new developing cartridge is sleeved on the shaft, and the detecting member rotates about the shaft.

When the developing box works, the protruding shaft is combined with the detected piece to receive power, meanwhile, the protrusion arranged on the detected piece touches the detected piece in the printer, so that the electric connection between the shaft and the detected piece is interrupted, when the protrusion on the detected piece is separated from the detected piece, the shaft is electrically connected with the detected piece again, and the printer judges whether the developing box is a new developing box or not by receiving the signal frequency of the electric connection interruption.

In practice, the conductive member only needs a small portion to be electrically connected to the detected member, and when the conductive member is integrally formed, a considerable portion of the conductive material is unnecessary, and in addition, the detecting member is connected to and disconnected from the detected member by providing the protrusion.

SUMMERY OF THE UTILITY MODEL

The utility model discloses redesigned the conductive structure in the developing box, specifically for with the design of conductive parts components of a whole that can function independently, cancelled the protruding that sets up on the detection piece simultaneously, makeed the utility model relates to a developing box's conductive structure is more stable.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a developing box comprises a shell, a rotating piece, a power receiving piece, a conductive component, an end cover and a power transmission piece, wherein the rotating piece is rotatably arranged in the shell, the power receiving piece and the conductive component are respectively positioned at two longitudinal tail ends of the shell, the end cover is arranged at the same side of the conductive component, and the power transmission piece is arranged at the same side of the conductive component; wherein the power receiving part is used for receiving driving force from the outside to drive the rotating part to rotate, and the conductive assembly is used for receiving electric power from the outside to supply the electric power to the rotating part; the power transmission member receives the driving force of the power receiving member to rotate about the rotation axis; a portion of the conductive assembly is located outside the range of the power transmission member as viewed along the axis of rotation.

Wherein a portion of the conductive assembly is exposed from the end cap, the conductive assembly including a first conductive portion for electrically connecting with the rotary member, a second conductive portion for receiving electric power, and an electric connector electrically connecting the first conductive portion and the second conductive portion, wherein a portion of the electric connector is located outside a range of the power transmission member as viewed along the rotation axis.

Preferably, a portion of the conductive assembly is driven by the power transmission member and rotates together with the power receiving member about the rotation axis.

The second conductive portion includes a base and a protrusion provided at a distal end of the base, the protrusion protruding from the base in a direction away from the housing along the rotation axis, and abutting against the electrical connector.

The electric connector includes a first contact portion that contacts the protruding portion, a second contact portion that is electrically connected to the first conductive portion, and a connecting portion that connects the first contact portion and the second contact portion, at least the connecting portion being located outside the range of the power transmission member as viewed along the rotation axis.

The first contact portion is fixed to the end cap, the rotation axis passes through the first contact portion, and the second conductive portion is in contact with a side of the first contact portion facing the housing.

The first contact part is integrally circular and comprises a through hole arranged in the middle, an external connection part connected with the connecting part and a notch arranged in the external connection part, the through hole is used for being combined with the end cover, and the notch is used for being opposite to the protruding part so as to cut off the electric connection between the second conductive part and the electric connecting piece.

The developing cartridge further includes an urging member provided between the power transmission member and the second conductive portion, the urging member being for urging the second conductive portion toward the electric connection member.

As mentioned above, the utility model relates to a conductive component components of a whole that can function independently design in developing box cancels the arch that sets up on the detection piece simultaneously for developing box's electrically conductive structure is more stable.

Drawings

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

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

Fig. 3 is a perspective view of the conductive sheet according to the present invention.

Detailed Description

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

Fig. 1 is a perspective view of a developing cartridge according to the present invention; fig. 2 is a partially exploded view of a conductive terminal of a developing cartridge according to the present invention; fig. 3 is a perspective view of the conductive sheet according to the present invention.

The developing cartridge of the present invention can be installed in a printer (not shown) provided with a power output source and an electric power output source, as shown in the figure, the developing cartridge 1 includes a casing 2, a rotary member 3 rotatably installed in the casing 2, a power receiving member 4 and a conductive member 5 respectively located at two longitudinal ends of the casing, and an end cover 11 disposed at the same side as the conductive member 5; wherein the power receiving member 4 is for receiving a driving force from a power output source of the printer to drive the rotary member 3 to rotate about the rotation axis L1, the conductive member 5 is for receiving electric power from a power output source of the printer to supply to the rotary member 3, and a portion of the conductive member 5 is exposed from the end cover 11.

As described above, in order to determine whether the developing cartridge 1 is a new developing cartridge, the printer is further provided with the detected member, and the exposed portion of the conductive member 5 from the end cap 11 abuts against the detected member, so that the electrical connection between the two is realized.

Further, the developing cartridge 1 further includes a power transmission member 12 provided on the same side as the conductive member 5, the power transmission member 12 receiving the driving force of the power receiving member 4 to rotate about the rotation axis L2. As shown in fig. 2, the conductive member 5 includes a first conductive portion 51 for electrically connecting with the rotary member 3, a second conductive portion 52 for electrically connecting with the detected member, and an electrical connection member 53 electrically connecting the first conductive portion 51 and the second conductive portion 52; wherein the first conductive part 51 is fixedly mounted in the housing 2 and the second conductive part 52 is connected to the power transmission element 12 for driving by the power transmission element 12 and rotating together with the power receiving element 12 about a rotation axis L2, i.e. the power transmission element 12 and the second conductive part 52 are rotatable coaxially, a part of the electrical connection 53 being located outside the range of the power transmission element 12, seen along the rotation axis L2.

As shown in fig. 2, the second conductive part 52 includes a base 521 and a protrusion 523 provided at an end of the base, the base 521 has an outer surface 522, and a part of the outer surface 522 is exposed from the cover 11 and is used for electrical connection with a detected member provided in the printer; along the rotation axis L2, the protruding portion 523 protrudes from the base 521 in a direction away from the housing 2, and the protruding portion 523 is used to abut against the electrical connection member 53, and thus, the electric power received by the base 521 from the detected member through the outer surface 522 is transmitted to the electrical connection member 53 through the protruding portion 523.

As shown in fig. 3, the electric connector 53 includes a first contact portion 531 in contact with the protruding portion 523, a second contact portion 532 electrically connected to the first conductive portion 51, and a connection portion 533 connecting the first contact portion 531 and the second contact portion 532; wherein the first contact portion 531 is fixed to the end cap 11, the rotation axis L2 passes through the first contact portion 531, and when the assembly of the developing cartridge 1 is completed, the second conductive portion 52 is in contact with the side 532E of the first contact portion 531 facing the casing 2, and at least the connecting portion 533 is located outside the range of the power transmission member 12 as viewed along the rotation axis L2.

The first contact portion 531 is circular as a whole, and includes a through hole 531A provided in the middle portion, an external connection portion 531B connected to the connection portion 533, and a notch 531C provided in the external connection portion 531B, the through hole 531A is used to be combined with the end cover 11 to fix the first contact portion 531 on the end cover 11, and the notch 531C is used to be opposite to the protruding portion 523 to cut off the electrical connection between the second conductive portion 52 and the electrical connector 53.

In general, the notch 531C may be formed by being recessed inward from the outermost side of the outer connecting portion 531B along the radial direction of the first contact portion 531, or may be any through hole provided in the outer connecting portion 531B, the through hole not communicating with the outside along the radial direction of the first contact portion 531; either way, the maximum dimension of the notch 531C is larger than the dimension of the protrusion 523 in the radial direction of the first contact portion 531 to ensure that the electrical connection between the second conductive part 52 and the electrical connector 53 can be interrupted when the protrusion 523 is opposed to the notch 531C.

In order to maintain the integrity of the first contact portion 531, as shown in fig. 3, the connection portion 531D is still remained at the position opposite to the notch 531C along the radial direction of the first contact portion 531, and the number of the notches 531C can be determined according to the number of times of the electrical connection interruption signal that needs to be detected by the printer, which corresponds to the two, for example, when the printer needs to detect the signal of one electrical connection interruption, the notch 531C only needs to be set to be one, when the printer needs to detect the signal of two electrical connection interruptions, the notch 531C is set to be two, and so on.

Further, to ensure stable electrical connection between the second conductive portion 52 and the first contact portion 531, as shown in fig. 2, the developing cartridge 1 further includes an urging member 13 provided between the power transmission member 12 and the second conductive portion 52, preferably, the urging member 13 is a compression spring, and the second conductive portion 52 is in close contact with a side 531E of the first contact portion 531 facing the casing 2 under urging action of the compression spring 13.

As described above, the conductive member 5 according to the present invention is not integrally formed, in which the conductive material required for the second conductive portion 52 for receiving power from the printer is greatly reduced relative to the amount of the conductive material used in the existing developing cartridge; the second conductive part 52 transmits the electric power to the first conductive part 51 through the electric connecting piece 53, and the electric connecting piece 53 can be a conductive sheet in whole or in part, or a conductive steel wire in part, and the cost and the using amount of the conductive sheet are greatly reduced compared with the cost and the using amount of the existing conductive material which is conductive plastic in whole; further, the developing cartridge 1 is not provided with a protrusion, so that the risk that the printer cannot judge whether the developing cartridge is a new developing cartridge due to the fact that the protrusion is broken is avoided.

Claims

1. A developing box comprises a shell, a rotating piece, a power receiving piece, a conductive component, an end cover and a power transmission piece, wherein the rotating piece is rotatably arranged in the shell, the power receiving piece and the conductive component are respectively positioned at two longitudinal tail ends of the shell, the end cover is arranged at the same side of the conductive component, and the power transmission piece is arranged at the same side of the conductive component;

wherein the power receiving part is used for receiving driving force from the outside to drive the rotating part to rotate, and the conductive assembly is used for receiving electric power from the outside to supply the electric power to the rotating part;

the power transmission member receives the driving force of the power receiving member to rotate about the rotation axis;

characterized in that a part of the conductive assembly, viewed along the axis of rotation, is located outside the range of the power transmission member.

2. A developing cartridge according to claim 1, wherein a part of the conductive member is exposed from the end cap.

3. A developing cartridge according to claim 1, wherein the conductive member includes a first conductive portion for electrically connecting with the rotary member, a second conductive portion for receiving electric power, and an electric connecting member electrically connecting the first conductive portion and the second conductive portion, wherein a part of the electric connecting member is located outside a range of the power transmission member as viewed along the rotation axis.

4. A developing cartridge according to claim 1, wherein a part of the conductive member is driven by the power transmitting member and rotates together with the power receiving member about the rotation axis.

5. A developing cartridge according to claim 3, wherein the second conductive portion includes a base and a projection provided at a distal end of the base, the projection projecting from the base in a direction away from the casing along the rotational axis and abutting the electrical connection member.

6. A developing cartridge according to claim 5, wherein the electric connecting member includes a first contact portion which is brought into contact with the projection, a second contact portion which is electrically connected to the first conductive portion, and a connecting portion which connects the first contact portion and the second contact portion, at least the connecting portion being located outside a range of the power transmission member as viewed along the rotation axis.

7. A developing cartridge according to claim 6, wherein the first contact portion is fixed to the end cap, the rotation axis passes through the first contact portion, and the second conductive portion is in contact with a side of the first contact portion facing the casing.

8. A developing cartridge according to claim 7, wherein the first contact portion is circular in shape as a whole and includes a through hole provided in a central portion for engaging with the end cap, an external connecting portion connected to the connecting portion, and a notch provided in the external connecting portion for opposing the projection to cut off an electrical connection between the second conductive portion and the electrical connecting member.

9. A developing cartridge according to claim 3, further comprising an urging member provided between the power transmission member and the second conductive portion, for urging the second conductive portion toward the electric connection member.