CN210402021U

CN210402021U - Developing box

Info

Publication number: CN210402021U
Application number: CN201921813287.4U
Authority: CN
Inventors: 闻艺俊
Original assignee: Zhuhai Tuojia Technology Co ltd
Current assignee: Zhuhai Tuojia Technology Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-04-24
Anticipated expiration: 2029-10-25

Abstract

The utility model relates to a developing box, detachably install in having in advance in the electrophotographic image forming apparatus who is counted the piece, including the casing, install the power receiving part and the stirring piece at the vertical end of casing, rotatably install the first rotating member in the casing, power receiving part is used for receiving drive power from the outside, and first rotating member all receives the drive power that comes from power receiving part and works with stirring piece, and developing box still includes the auxiliary shaft rotatably installed in the casing, the auxiliary shaft is used for receiving the drive power transmission of piece to stirring piece with power, owing to be provided with the auxiliary shaft, and the resistance that receives when the stirring vane in developing box is rotatory can reduce.

Description

Developing box

Technical Field

The utility model relates to an electrophotographic image forming field especially relates to a detachably installs the development box in electrophotographic image forming apparatus.

Background

Conventionally, an electrophotographic image forming apparatus is an apparatus for developing an electrostatic latent image with a developer contained in a developing cartridge detachably mounted therein and finally developing it on an image forming medium, and an existing developing cartridge has a stirring member rotatably mounted therein for stirring the developer, and specifically, the stirring member has a stirring blade mounted on a stirring shaft, and the stirring blade rotates with the rotation of the stirring shaft.

Although the stirring member is provided to scatter the developer and prevent the developer from caking, when the developing cartridge is in a state in which the developer is filled, rotation of the stirring member, particularly rotation of the stirring blade, becomes difficult, and at this time, the stirring blade rotation is highly resistant to the developer, or when the developing cartridge is not used for a long time or is in a humid environment for a long time, the developer is caked, and at this time, rotation of the stirring member also becomes difficult, and therefore, it is necessary to improve the structure in the developing cartridge with respect to this problem.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a developing box through wherein increasing the auxiliary shaft to alleviate the resistance of developer to stirring vane is rotatory, and adopt following technical scheme:

a developing cartridge detachably mountable to an electrophotographic image forming apparatus to which a member to be counted is preset, includes a housing, a power receiving member and a toggle member mounted at longitudinal ends of the housing, the power receiving member for receiving a driving force from the outside, a first rotating member rotatably mounted in the housing, the first rotating member and the toggle member each receiving the driving force from the power receiving member to operate, and an auxiliary shaft rotatably mounted in the housing for transmitting the driving force of the power receiving member to the toggle member.

Preferably, the power receiving part and the shifting part are respectively positioned at two longitudinal ends of the shell, the developing box further comprises a first gear set arranged on the same side of the power receiving part and a second gear set arranged on the same side of the shifting part, and the auxiliary shaft is connected with the first gear set and the second gear set.

Preferably, the rotation axis of the toggle member is perpendicular to the rotation axis of the first rotating member.

Preferably, the developer cartridge further includes a third rotating member rotatably installed in the casing, wherein the first rotating member is for supplying the developer to the outside, and an agitating blade installed at the third rotating member, the third rotating member receiving a driving force of the power receiving member for driving the agitating blade to rotate to agitate the developer, and the auxiliary shaft is closer to the first rotating member than the agitating shaft in an installation direction of the developer cartridge.

A gap is formed between the auxiliary shaft and the stirring shaft, and the maximum size of the gap does not exceed the width of the stirring blade along the installation direction of the developing box.

The developing cartridge further includes a third rotating member rotatably installed in the casing, the first gear set including a first gear combined with the power receiving member, a second gear at one end of the auxiliary shaft, and a third gear at one end of the agitating shaft; the second gear set comprises a fourth gear positioned at the other tail end of the auxiliary shaft and a fifth gear for driving the stirring piece, and the other tail end of the stirring shaft is not provided with the gear; preferably, the fourth gear is a bevel gear.

The second gear set further comprises a conversion gear positioned between the fourth gear and the fifth gear, the conversion gear is meshed with the fourth gear and the fifth gear, and the conversion gear is a bevel gear.

The rotation axes of the fourth gear and the fifth gear are both perpendicular to the rotation axis of the first rotating member.

As described above, the auxiliary shaft is rotatably provided in the developing cartridge, and the auxiliary shaft is provided closer to the first rotary member than the agitating shaft to reduce resistance of the developer received when the agitating blade rotates.

Drawings

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

Fig. 2 is a schematic view of the internal structure of the developing cartridge according to the present invention after the casing is hidden.

Fig. 3 is a schematic view of the structure when viewed from the opposite direction to fig. 2.

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 schematic view of the internal structure of the developing cartridge according to the present invention after the casing is hidden; fig. 3 is a schematic view of the structure when viewed from the opposite direction to fig. 2.

The developing cartridge 1 is mounted in a mounting direction a, and includes a casing 2, a power receiving member 4 and a stirring member 5 mounted at longitudinal ends of the casing 2, and a first rotating member 31, a second rotating member 32 and a third rotating member 33 rotatably mounted in the casing 2, wherein the power receiving member 4 is for receiving a driving force from outside and transmitting the driving force to components in the developing cartridge, the developer is accommodated in the casing 2, the first rotating member 31 is a developing member rotating about a rotation axis L1 for supplying the developer to the outside, the second rotating member 32 is a supplying member for contacting the first rotating member 31 and supplying the developer to the first rotating member 31, the third rotating member 33 is an agitating shaft, an agitating blade 34 is mounted on the agitating shaft 33, and the agitating shaft 33 rotates in cooperation with the first rotating member 31 and the second rotating member 32 receiving the driving force from the power receiving member 4, to agitate the developer; the toggle member 5 is configured to be driven to operate by the power receiving member 4, and at the same time, the toggle member 5 toggles a counted member preset in the electrophotographic image forming apparatus so that the developing cartridge can be recognized by the electrophotographic image forming apparatus.

As one of the modes, the power receiving part 4 and the shifting part 5 are respectively located at two longitudinal ends of the casing 2, as shown in fig. 2 and 3, the developing cartridge 1 further includes a first gear set 6 disposed at the same side as the power receiving part 4, a second gear set 7 disposed at the same side as the shifting part 5, and an auxiliary shaft 35 connecting the first gear set 6 and the second gear set 7, wherein the first gear set 6 is combined with the power receiving part 4, the second gear set 7 is combined with the shifting part 5, and after receiving the driving force of the power receiving part 4, the first gear set 6 transmits the driving force to the second gear set 7 through the auxiliary shaft 35, so as to drive the shifting part 5 to operate; due to the provision of the auxiliary shaft 35, when the developer is caked, the caked developer is crushed as the movement of the agitating blade 34 collides with the auxiliary shaft 35, and although the caked developer can be "woken" by the agitating blade 34 to collide with the inner wall of the casing or the projection projecting from the inner wall of the casing without providing the auxiliary shaft 35, the caked developer is subjected to a larger collision force than the auxiliary shaft 35, more favorably the caked developer is crushed; further, if the manner of projecting the projection from the inner wall of the housing is selected, not only the production mold of the housing 2 is complicated, but also a part of the developer may adhere to the projection, however, the rotating auxiliary shaft 35 is more favorable for the flow of the developer than the stationary projection, and the developer adhering to the auxiliary shaft 35 may also fall off with the rotation of the auxiliary shaft 35.

The first gear set 6 includes a first gear 61 coupled to the power receiving part 4, a second gear 62 at one end of the auxiliary shaft 35, and a third gear 63 at one end of the agitating shaft 33, the first gear 61, the second gear 62, and the third gear 63 are sequentially engaged, wherein the first gear 61 is formed integrally with the power receiving part 4, the second gear 62 is closer to the first gear 61 than the third gear 63 in the installation direction a, that is, the auxiliary shaft 35 is closer to the first rotary member 31 than the agitating shaft 33, and a gap is provided between the auxiliary shaft 35 and the agitating shaft 33, a maximum dimension of the gap does not exceed a width of the agitating blade 34 installed on the agitating shaft 33 in the installation direction a, and when the agitating blade 34 needs to pass through the auxiliary shaft 35, the agitating blade 34 is largely elastically deformed by the gap, and the agitating blade 34 after passing through the gap generates a large elastic force, the elastic force pushes the developer toward the inner wall of the casing 2, so that the developer is further pulverized.

When the developer contained in the casing 2 is large, the auxiliary shaft 35 rotates earlier than the agitating shaft 33, and the developer will be first agitated by the auxiliary shaft 35 to flow, thereby reducing the resistance when the agitating blade 34 rotates; further, the auxiliary shaft 35 is located around the agitating shaft 33, and in particular, the auxiliary shaft 35 is located on the rotation path of the agitating blade 34, and since the auxiliary shaft 35 occupies a part of the space around the agitating shaft 33, the resistance of the developer to the agitating blade 34 when it moves is reduced,

the second gear set 7 comprises a fourth gear 71 at the other end of the auxiliary shaft 35 and a fifth gear 73 for driving the toggle piece 5, wherein the fifth gear 73 is driven by the fourth gear 71 to rotate; the driving force received by the power receiving part 4 is transmitted to the stirring part 5 through the first gear set 6, the auxiliary shaft 35 and the second gear set 72, that is, it is only necessary to install the third gear 63 at one end of the stirring shaft 33, and it is not necessary to install a gear at the other end of the stirring shaft 33, so that the load of the stirring shaft 33 is greatly reduced, and the resistance of the developer against the rotation of the stirring blade 34 is relatively reduced.

In order to make the amount of the developer contained in the housing 2 larger, it is preferable that the fourth gear 71 is a bevel gear, and thus, a sixth gear (conversion gear) 72 is further provided between the fourth gear 71 and the fifth gear 73, the sixth gear 72 is in mesh with both the fourth gear 71 and the fifth gear 72, and the sixth gear 72 is also a bevel gear for converting the driving force of the fourth gear 71 into a force for rotating the fifth gear 73, as shown in fig. 3, the auxiliary shaft 35 is parallel to the first rotating member 31, and the rotation axes L2, L3 and L4 of the fifth gear 73, the sixth gear 72 and the dial 5 are parallel to each other and are perpendicular to the rotation axis L1 of the first rotating member 31.

The utility model discloses in, stir piece 5 with around rotation axis L4 reciprocating motion's mode stir the piece of being counted of presetting in the electrophotographic image forming apparatus, as shown in fig. 2, stir piece 5 including rotation axis 51 and along the radial outside stirring portion 52, atress portion 53 and the portion 54 that resets of extension of rotation axis 51's circumference, atress portion 53 receives the drive power that fifth gear 73 transmitted and drives stirring portion 52 rotatory, and simultaneously, reset portion 54 is oppressed and is out of shape, and when atress portion 53 no longer atress, stirring portion 52 rotated and reset to opposite direction around rotation axis L4 under the effect of the reset power of reset portion 54.

Whether the developer is caked due to the long-term non-use of the developing cartridge 1 or the developer contained in the casing 2 is more likely to cause the agitating blade 34 to receive a greater resistance when rotating, as described above, the developing cartridge 1 is additionally provided with the auxiliary shaft 35 therein, and the auxiliary shaft 35 is rotatably disposed closer to the first rotary member 31 than the agitating shaft 33 to reduce the resistance of the developer received when the agitating blade 34 rotates.

Claims

1. A developing cartridge detachably mountable to an electrophotographic image forming apparatus preset with a member to be counted, comprising a casing, a power receiving member mounted at a longitudinal end of the casing for receiving a driving force from outside, and a stirring member receiving the driving force from the power receiving member to operate, characterized by further comprising an auxiliary shaft rotatably mounted in the casing for transmitting the driving force of the power receiving member to the stirring member.

2. A developing cartridge according to claim 1, wherein the power receiving member and the shifting member are respectively located at both longitudinal ends of the casing, the developing cartridge further comprises a first gear train disposed on the same side as the power receiving member and a second gear train disposed on the same side as the shifting member, and the auxiliary shaft is connected to the first gear train and the second gear train.

3. A developing cartridge according to claim 1, further comprising a first rotary member rotatably mounted in the casing, the first rotary member being operated by receiving the driving force from the power receiving member, the rotational axis of the stirring member being orthogonal to the rotational axis of the first rotary member.

4. A developing cartridge according to claim 1, wherein the developer is accommodated in the casing, the developing cartridge further comprising a first rotary member rotatably mounted in the casing, an agitating shaft, and an agitating blade mounted on the agitating shaft, wherein the first rotary member is for supplying the developer to the outside, the first rotary member and the agitating shaft receive a driving force of the power receiving member to operate, the agitating shaft is for driving the agitating blade to rotate to agitate the developer, and the auxiliary shaft is closer to the first rotary member than the agitating shaft in a mounting direction of the developing cartridge.

5. A developing cartridge according to claim 4, wherein the auxiliary shaft and the agitating shaft have a gap therebetween, the gap having a maximum dimension not exceeding a width of the agitating blade in a mounting direction of the developing cartridge.

6. A developing cartridge according to claim 2, further comprising an agitating shaft rotatably mounted in the casing, the first gear group including a first gear combined with the power receiving member, a second gear at one end of the auxiliary shaft, and a third gear at one end of the agitating shaft; the second gear set comprises a fourth gear at the other end of the auxiliary shaft and a fifth gear for driving the stirring piece, and the other end of the stirring shaft is not provided with the gear.

7. A developing cartridge according to claim 6, wherein the fourth gear is a bevel gear.

8. A developing cartridge according to claim 7, wherein the second gear set further includes a switching gear between the fourth gear and the fifth gear, the switching gear being in mesh with both the fourth gear and the fifth gear, and the switching gear being a bevel gear.

9. A developing cartridge according to claim 8, wherein the rotation axes of the fourth gear and the fifth gear are perpendicular to the rotation axis of the first rotary member.