CN220855450U

CN220855450U - Developing box

Info

Publication number: CN220855450U
Application number: CN202322376081.2U
Authority: CN
Inventors: 彭健; 顾海丰
Original assignee: Jiangxi Yibo Electronic Technology Co Ltd
Current assignee: Jiangxi Yibo Electronic Technology Co Ltd
Priority date: 2022-09-01
Filing date: 2023-09-01
Publication date: 2024-04-26
Anticipated expiration: 2033-09-01

Abstract

The present utility model relates to a developing cartridge detachably mountable to an image forming apparatus, the developing cartridge comprising: a housing configured to accommodate a developer, including a first side surface and a second side surface separately provided in a first direction; a developing roller rotatably supported to the casing and rotatable about a first axis extending in a first direction; a first projection extending in the first direction for supporting a gravitational force of the developing cartridge; and a urging projection that can receive a force in a third direction intersecting the first direction, the urging projection being further away from the developing roller than the first projection in a second direction different from both the first direction and the third direction.

Description

Developing box

Technical Field

The utility model relates to the field of electronic imaging, in particular to a developing box.

Background

The related art discloses an image forming apparatus including a developing cartridge and a photosensitive element cartridge, in which a developing roller in the developing cartridge contacts the photosensitive element cartridge and the photosensitive drum when forming an image in operation, and the developing roller applies a certain pressure to the photosensitive element cartridge to transfer a developer on the developing roller to the photosensitive drum.

When the developing cartridge is attached to the drum unit, the projection structure on the developing cartridge receives a pressing force from the image forming apparatus, and since the projection structure is a columnar structure or a smaller projection structure formed by extending from the housing of the developing cartridge, the projection structure is biased during a long-time operation of the developing cartridge, which affects a normal printing function of the developing cartridge, a normal use of the developing cartridge, and a printing quality.

Disclosure of utility model

The utility model provides a developing box, which aims to solve the technical problems that in the prior art, in the long-time working process of the developing box, a bulge structure is easy to deform or break, the normal use of the developing box is influenced, and the printing quality is influenced.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

A developing cartridge detachably mountable to an image forming apparatus, said developing cartridge comprising:

a housing configured to accommodate a developer, including a first side surface and a second side surface separately provided in a first direction;

a developing roller rotatably supported to the casing and rotatable about a first axis extending in a first direction;

A first projection extending in the first direction for supporting a gravitational force of the developing cartridge;

Wherein the developing roller further comprises a urging projection which can receive a force in a third direction intersecting with the first direction, the urging projection being further away from the developing roller than the first projection in a second direction different from both the first direction and the third direction.

Further, a first protrusion for receiving a force from a second direction is included, the urging protrusion being located between the first protrusion and the first protrusion in the second direction.

Further, the urging projection is closer to the first projection than the first projection in the second direction.

Further, a guide protrusion is further included, which can be forced to move the developing cartridge from a pre-mounting position to a mounting position during the mounting of the developing cartridge.

Further, the housing further includes a third side and a fourth side provided apart from each other in the third direction, and the guide protrusion is formed to extend forward from the third side.

Further, the guide projection has a guide surface abutting the image forming apparatus, the guide surface being formed to extend in the second direction.

Further, the guide protrusion is provided as an elastic member.

After the technical scheme is adopted, the shape and the structure of the forced pushing protrusion are changed, so that the stress surface of the forced pushing protrusion is increased, the structural strength of the forced pushing protrusion is increased, stress deviation caused by long-time stress of the forced pushing protrusion is prevented, and the normal use of the developing box and the image quality of output paper are ensured.

Drawings

FIG. 1 is a schematic view of a developing cartridge installation according to an embodiment of the present utility model;

Fig. 2 is a schematic perspective view of a first side of a developing cartridge according to an embodiment of the present utility model;

fig. 3 is a schematic perspective view of a second side of the developing cartridge according to the embodiment of the present utility model;

FIG. 4 is a schematic view showing a front structure of a first side of a developing cartridge according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing a front structure of a second side of the developing cartridge according to the embodiment of the present utility model;

fig. 6 is a schematic perspective view of a developing cartridge according to an embodiment of the present utility model.

Detailed Description

In order to make the technical solution and the technical effects of the embodiments of the present utility model more clear, the technical solution of the developing cartridge of the present utility model will be clearly and completely described with reference to the accompanying drawings.

In the following description, with the axis extending direction of the developing roller as a "first direction", a second direction may be defined as a direction of gravitational force of the developing cartridge or a direction away from gravitational force, the first direction and the second direction are perpendicular to each other, and a third direction is a direction different from the first direction and the second direction.

Fig. 1 is a schematic view of an image forming apparatus, which includes four developing cartridges 100, a drawer 200, and a main body as shown in fig. 1. The drawer 200 includes four slots 201, and the developing cartridge 100 is detachably mounted in the slots 201 of the drawer 200, and when the developing cartridge 100 is mounted in the drawer 200, it can be attached to the main body, and the four developing cartridges 100 can accommodate four different color developers, wherein the number of the developing cartridges 100 mounted in the drawer 200 can be adjusted according to actual demands. Among them, the drawer 200 is provided with photosensitive drums 202 disposed in one-to-one correspondence with the developing cartridges 100, and the outer peripheral surfaces of the photosensitive drums 202 are used to form electrostatic latent images.

Fig. 2 and 3 are perspective views of the developing cartridge 100. As shown in fig. 2, the developing cartridge 100 includes a casing 1, the casing 1 being configured to accommodate developer, the casing 1 having a first side 11 and a second side 12 provided apart from each other in a first direction, a third side 13 and a fourth side 14 provided apart from each other in a third direction, and an upper surface 15 connecting the third side 13 and the fourth side 14. The developing cartridge 100 further includes a developing roller 2 and a powder feeding roller (not shown), and the developing roller 7 is rotatably supported between the first side 11 and the second side 12 of the casing 1, rotatable about a first rotation axis extending in the first direction. The development 7 includes a development roller shaft and a development roller body which is fitted around and fixed to the outer peripheral surface of the development roller shaft and rotates together with the development roller shaft, and one end of the outer peripheral surface of the development roller body is exposed outside the casing 1. The toner feed roller is rotatably supported between the first side 11 and the second side 12 of the casing 1, is rotatable about a second rotation axis extending in the first direction, and developer is supplied to the outer peripheral surface of the developing roller 7 by the toner feed roller when the developing roller 7 and the toner feed roller are rotated.

The first side 11 of the casing 1 is provided with a coupling member 111, a developing roller gear, and a toner feeding roller gear, the coupling member 111 being for engagement with a driving part (not shown in the drawings) in the image forming apparatus to receive a driving force and rotate about a rotation axis in a first direction; the developing roller gear is engaged with the coupling member 111, and rotates following the coupling member 111 while driving the developing roller 7 to rotate, and the powder feeding roller gear is engaged with the coupling member 111, and rotates following the coupling member 111 while driving the powder feeding roller to rotate.

As shown in fig. 4 and 5, the developing cartridge 100 includes a pair of first protrusions 2 and a pair of first protrusions 3, the pair of first protrusions 2 being formed to extend in a first direction, the first protrusions 2 being for receiving a force in a second direction (up-down direction), specifically, the first protrusions 2 being for supporting a weight of the developing cartridge 100 for receiving a force opposite to a direction of gravity, and supporting the developing cartridge 100 in the drawer 200. A pair of first protrusions 3 are formed extending in a first direction, the first protrusions 3 for receiving a pressing force in a second direction, specifically, the developing cartridge 100 receives a downward pressing force, and is fixed in the drawer 200. Two first protrusions 2 of the pair of first protrusions 2 are provided on the first side 11 and the second side 12 of the housing, respectively, and likewise, two first protrusions 3 of the pair of first protrusions 3 are provided on the first side 11 and the second side 12 of the housing, respectively. A pair of first projections 2 are formed extending in the first direction, specifically one of the pair of first projections 2 is formed extending from the first side 11 and the other is formed extending from the second side 12, the first projections 2 have first contact surfaces 21 for contacting the drawer 200 and receiving urging force in the direction opposite to the gravitational direction of the developing cartridge 100, likewise, a pair of first projections 3 are formed extending in the first direction, specifically one of the pair of first projections 3 is formed extending from the first side 11 and the other is formed extending from the second side 12, the first projections 3 have second contact surfaces 31 for contacting the drawer 200 and receiving urging force in the same direction as the gravitational direction of the developing cartridge 100, and the first projections 3 are located above the first projections 2 in the second direction.

As shown in fig. 4 and 5, the developing cartridge 100 further includes a pair of urging projections 4, the urging projections 4 extending in the first direction, being located inside the first side 11 in the first direction, the urging projections 4 being formed protruding outward from the fourth side 14 of the casing 1 in the third direction for receiving urging force in the third direction. The urging projection 4 is located between the first projection 2 and the first projection 3 in the third direction, and also, in order to ensure stable positioning of the developing cartridge 100, the urging projection 4 is located between the first projection 2 and the first projection 3 in the second direction, and the urging projection 4 is closer to the first projection 2 in the second direction, after the developing cartridge 100 is mounted, the developing cartridge 100 receives forces from the second direction and the third direction, and a stress point in the third direction is located between the first projection 2 and the first projection 3, so that the developing cartridge 100 is prevented from being inclined due to unbalanced urging force. As shown in the drawing, the distance between the first projection 2 and the developing roller 7 in the second direction is L1, and the distance between the urging projection 4 and the developing roller 7 in the second direction is L2, as viewed from the first side, wherein L2 > L1, that is, the urging projection 4 is farther from the developing roller 7 than the first projection 2 in the second direction. Or the distance between the first projection 2 and the developing roller 7 in the third direction is L3 and the distance between the urging projection 4 and the developing roller 7 in the second direction is L4 as seen from the second side, wherein L4 > L3, i.e., the urging projection 4 is farther from the developing roller than the first projection 2 in the third direction.

As shown in fig. 6, when the conventional developing cartridge 100 is mounted in the drawer 200, it is first in the pre-mounted position, and when the drawer 200 is attached to the main body, the force receiving portion of the developing cartridge 100 receives a force from the main body, thereby rotating the developing cartridge 100 and moving the developing cartridge 100 to the mounted position. Further, in order to enable the developing cartridge 100 to be held at the mounting position when mounted in the drawer 200, the third side 13 of the casing 1 of the developing cartridge 100 is provided with a guide projection 8, the guide projection 8 protruding beyond the third side 13 of the casing 1, the guide projection 8 is provided with a guide surface 81, wherein when the developing cartridge 100 is mounted in the mounting groove 201 in the drawer 200 in the mounting direction, the guide surface 81 is brought into contact with the wall of the mounting groove 201 first, and when the mounting in the mounting direction is continued, the developing cartridge 100 is loaded into the drawer 200 along the guide surface 81 and into the mounting position, and in order to prevent the guide projection 8 from excessively hard contact with the wall of the mounting groove 201, the structure of the developing cartridge 100 or the structure of the drawer 200 is broken, an elastic member such as a compression spring or the like is further provided between the guide projection 8 and the casing 1, or the guide projection 8 is provided as an elastic material such as an elastic rubber or the like. It is easily conceivable that the guide projection 8 may also be formed extending from the first side 11 and/or the second side 12 to the third side 13.

The above embodiments are only for illustrating the technical aspects of the present utility model, not for limiting the same, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with other technical solutions, which may 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 utility model.

Claims

1. A developing cartridge detachably mountable to an image forming apparatus, said developing cartridge comprising:

2. The developer cartridge according to claim 1, further comprising a first projection for receiving a force from a second direction, said urging projection being located between said first projection and said first projection in said second direction.

3. A developing cartridge according to claim 2, wherein said urging projection is closer to said first projection than to said first projection in said second direction.

4. A developing cartridge according to claim 1, further comprising a guide projection which is forced to move said developing cartridge from a pre-mounted position to a mounted position during mounting of said developing cartridge.

5. A developing cartridge according to claim 4, wherein said housing further includes a third side surface and a fourth side surface provided apart from each other in said third direction, and said guide projection is formed extending forward from said third side surface.

6. A developing cartridge according to claim 4, wherein said guide projection has a guide surface abutting against said image forming device, said guide surface being formed extending in said second direction.

7. A developing cartridge according to claim 4, wherein said guide projection is provided as an elastic member.